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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/ratelimit.h>
32#include <linux/export.h>
33
34#include <drm/drmP.h>
35#include <drm/drm_core.h>
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
69#define DRM_IOCTL_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t)
70
71#define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
72
73#define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, drm_mode_fb_cmd232_t)
74
75typedef struct drm_version_32 {
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 */
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;
91 struct drm_version __user *version;
92 int err;
93
94 if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
95 return -EFAULT;
96
97 version = compat_alloc_user_space(sizeof(*version));
98 if (!version)
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
111 err = drm_ioctl(file,
112 DRM_IOCTL_VERSION, (unsigned long)version);
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
124 if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
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;
138 struct drm_unique __user *u;
139 int err;
140
141 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
142 return -EFAULT;
143
144 u = compat_alloc_user_space(sizeof(*u));
145 if (!u)
146 return -EFAULT;
147 if (__put_user(uq32.unique_len, &u->unique_len)
148 || __put_user((void __user *)(unsigned long)uq32.unique,
149 &u->unique))
150 return -EFAULT;
151
152 err = drm_ioctl(file, DRM_IOCTL_GET_UNIQUE, (unsigned long)u);
153 if (err)
154 return err;
155
156 if (__get_user(uq32.unique_len, &u->unique_len))
157 return -EFAULT;
158 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
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;
167 struct drm_unique __user *u;
168
169 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
170 return -EFAULT;
171
172 u = compat_alloc_user_space(sizeof(*u));
173 if (!u)
174 return -EFAULT;
175 if (__put_user(uq32.unique_len, &u->unique_len)
176 || __put_user((void __user *)(unsigned long)uq32.unique,
177 &u->unique))
178 return -EFAULT;
179
180 return drm_ioctl(file, DRM_IOCTL_SET_UNIQUE, (unsigned long)u);
181}
182
183typedef struct drm_map32 {
184 u32 offset; /**< Requested physical address (0 for SAREA)*/
185 u32 size; /**< Requested physical size (bytes) */
186 enum drm_map_type type; /**< Type of memory to map */
187 enum drm_map_flags flags; /**< Flags */
188 u32 handle; /**< User-space: "Handle" to pass to mmap() */
189 int mtrr; /**< MTRR slot used */
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;
197 struct drm_map __user *map;
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));
205 if (!map)
206 return -EFAULT;
207 if (__put_user(idx, &map->offset))
208 return -EFAULT;
209
210 err = drm_ioctl(file, DRM_IOCTL_GET_MAP, (unsigned long)map);
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
222 m32.handle = (unsigned long)handle;
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;
234 struct drm_map __user *map;
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));
242 if (!map)
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
250 err = drm_ioctl(file, DRM_IOCTL_ADD_MAP, (unsigned long)map);
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
259 m32.handle = (unsigned long)handle;
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);
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;
275 struct drm_map __user *map;
276 u32 handle;
277
278 if (get_user(handle, &argp->handle))
279 return -EFAULT;
280
281 map = compat_alloc_user_space(sizeof(*map));
282 if (!map)
283 return -EFAULT;
284 if (__put_user((void *)(unsigned long)handle, &map->handle))
285 return -EFAULT;
286
287 return drm_ioctl(file, DRM_IOCTL_RM_MAP, (unsigned long)map);
288}
289
290typedef 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
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;
304 struct drm_client __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 (!client)
312 return -EFAULT;
313 if (__put_user(idx, &client->idx))
314 return -EFAULT;
315
316 err = drm_ioctl(file, DRM_IOCTL_GET_CLIENT, (unsigned long)client);
317 if (err)
318 return err;
319
320 if (__get_user(c32.idx, &client->idx)
321 || __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
333typedef struct drm_stats32 {
334 u32 count;
335 struct {
336 u32 value;
337 enum drm_stat_type type;
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;
346 struct drm_stats __user *stats;
347 int i, err;
348
349 stats = compat_alloc_user_space(sizeof(*stats));
350 if (!stats)
351 return -EFAULT;
352
353 err = drm_ioctl(file, 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
369typedef 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
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;
382 struct drm_buf_desc __user *buf;
383 int err;
384 unsigned long agp_start;
385
386 buf = compat_alloc_user_space(sizeof(*buf));
387 if (!buf || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)))
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
395 err = drm_ioctl(file, DRM_IOCTL_ADD_BUFS, (unsigned long)buf);
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;
412 struct drm_buf_desc __user *buf;
413
414 if (copy_from_user(&b32, argp, sizeof(b32)))
415 return -EFAULT;
416
417 buf = compat_alloc_user_space(sizeof(*buf));
418 if (!buf)
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
426 return drm_ioctl(file, DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
427}
428
429typedef struct drm_buf_info32 {
430 int count; /**< Entries in list */
431 u32 list;
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;
440 struct drm_buf_info __user *request;
441 struct drm_buf_desc __user *list;
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;
450 to = (drm_buf_desc32_t __user *) (unsigned long)req32.list;
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
457 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_desc);
458 request = compat_alloc_user_space(nbytes);
459 if (!request)
460 return -EFAULT;
461 list = (struct drm_buf_desc *) (request + 1);
462
463 if (__put_user(count, &request->count)
464 || __put_user(list, &request->list))
465 return -EFAULT;
466
467 err = drm_ioctl(file, DRM_IOCTL_INFO_BUFS, (unsigned long)request);
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],
476 offsetof(struct drm_buf_desc, flags)))
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 {
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 */
490} drm_buf_pub32_t;
491
492typedef struct drm_buf_map32 {
493 int count; /**< Length of the buffer list */
494 u32 virtual; /**< Mmap'd area in user-virtual */
495 u32 list; /**< Buffer information */
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;
504 struct drm_buf_map __user *request;
505 struct drm_buf_pub __user *list;
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;
518 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub);
519 request = compat_alloc_user_space(nbytes);
520 if (!request)
521 return -EFAULT;
522 list = (struct drm_buf_pub *) (request + 1);
523
524 if (__put_user(count, &request->count)
525 || __put_user(list, &request->list))
526 return -EFAULT;
527
528 err = drm_ioctl(file, DRM_IOCTL_MAP_BUFS, (unsigned long)request);
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],
537 offsetof(struct drm_buf_pub, address))
538 || __get_user(addr, &list[i].address)
539 || __put_user((unsigned long)addr,
540 &list32[i].address))
541 return -EFAULT;
542
543 if (__put_user(actual, &argp->count)
544 || __get_user(addr, &request->virtual)
545 || __put_user((unsigned long)addr, &argp->virtual))
546 return -EFAULT;
547
548 return 0;
549}
550
551typedef struct drm_buf_free32 {
552 int count;
553 u32 list;
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;
560 struct drm_buf_free __user *request;
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));
567 if (!request)
568 return -EFAULT;
569 if (__put_user(req32.count, &request->count)
570 || __put_user((int __user *)(unsigned long)req32.list,
571 &request->list))
572 return -EFAULT;
573
574 return drm_ioctl(file, DRM_IOCTL_FREE_BUFS, (unsigned long)request);
575}
576
577typedef struct drm_ctx_priv_map32 {
578 unsigned int ctx_id; /**< Context requesting private mapping */
579 u32 handle; /**< Handle of map */
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;
586 struct drm_ctx_priv_map __user *request;
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));
593 if (!request)
594 return -EFAULT;
595 if (__put_user(req32.ctx_id, &request->ctx_id)
596 || __put_user((void *)(unsigned long)req32.handle,
597 &request->handle))
598 return -EFAULT;
599
600 return drm_ioctl(file, DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
601}
602
603static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
604 unsigned long arg)
605{
606 struct drm_ctx_priv_map __user *request;
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));
617 if (!request)
618 return -EFAULT;
619 if (__put_user(ctx_id, &request->ctx_id))
620 return -EFAULT;
621
622 err = drm_ioctl(file, DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
623 if (err)
624 return err;
625
626 if (__get_user(handle, &request->handle)
627 || __put_user((unsigned long)handle, &argp->handle))
628 return -EFAULT;
629
630 return 0;
631}
632
633typedef struct drm_ctx_res32 {
634 int count;
635 u32 contexts;
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;
643 struct drm_ctx_res __user *res;
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));
650 if (!res)
651 return -EFAULT;
652 if (__put_user(res32.count, &res->count)
653 || __put_user((struct drm_ctx __user *) (unsigned long)res32.contexts,
654 &res->contexts))
655 return -EFAULT;
656
657 err = drm_ioctl(file, DRM_IOCTL_RES_CTX, (unsigned long)res);
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 {
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 */
673 enum drm_dma_flags flags; /**< Flags */
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 */
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;
685 drm_dma32_t __user *argp = (void __user *)arg;
686 struct drm_dma __user *d;
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));
693 if (!d)
694 return -EFAULT;
695
696 if (__put_user(d32.context, &d->context)
697 || __put_user(d32.send_count, &d->send_count)
698 || __put_user((int __user *)(unsigned long)d32.send_indices,
699 &d->send_indices)
700 || __put_user((int __user *)(unsigned long)d32.send_sizes,
701 &d->send_sizes)
702 || __put_user(d32.flags, &d->flags)
703 || __put_user(d32.request_count, &d->request_count)
704 || __put_user((int __user *)(unsigned long)d32.request_indices,
705 &d->request_indices)
706 || __put_user((int __user *)(unsigned long)d32.request_sizes,
707 &d->request_sizes))
708 return -EFAULT;
709
710 err = drm_ioctl(file, DRM_IOCTL_DMA, (unsigned long)d);
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
723#if IS_ENABLED(CONFIG_AGP)
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;
733 struct drm_agp_mode __user *mode;
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
742 return drm_ioctl(file, DRM_IOCTL_AGP_ENABLE, (unsigned long)mode);
743}
744
745typedef struct drm_agp_info32 {
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 */
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;
764 struct drm_agp_info __user *info;
765 int err;
766
767 info = compat_alloc_user_space(sizeof(*info));
768 if (!info)
769 return -EFAULT;
770
771 err = drm_ioctl(file, DRM_IOCTL_AGP_INFO, (unsigned long)info);
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 */
796 u32 physical; /**< Physical used by i810 */
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;
804 struct drm_agp_buffer __user *request;
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));
811 if (!request
812 || __put_user(req32.size, &request->size)
813 || __put_user(req32.type, &request->type))
814 return -EFAULT;
815
816 err = drm_ioctl(file, DRM_IOCTL_AGP_ALLOC, (unsigned long)request);
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))) {
823 drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
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;
834 struct drm_agp_buffer __user *request;
835 u32 handle;
836
837 request = compat_alloc_user_space(sizeof(*request));
838 if (!request
839 || get_user(handle, &argp->handle)
840 || __put_user(handle, &request->handle))
841 return -EFAULT;
842
843 return drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
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;
856 struct drm_agp_binding __user *request;
857
858 if (copy_from_user(&req32, argp, sizeof(req32)))
859 return -EFAULT;
860
861 request = compat_alloc_user_space(sizeof(*request));
862 if (!request
863 || __put_user(req32.handle, &request->handle)
864 || __put_user(req32.offset, &request->offset))
865 return -EFAULT;
866
867 return drm_ioctl(file, DRM_IOCTL_AGP_BIND, (unsigned long)request);
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;
874 struct drm_agp_binding __user *request;
875 u32 handle;
876
877 request = compat_alloc_user_space(sizeof(*request));
878 if (!request
879 || get_user(handle, &argp->handle)
880 || __put_user(handle, &request->handle))
881 return -EFAULT;
882
883 return drm_ioctl(file, DRM_IOCTL_AGP_UNBIND, (unsigned long)request);
884}
885#endif /* CONFIG_AGP */
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;
896 struct drm_scatter_gather __user *request;
897 int err;
898 unsigned long x;
899
900 request = compat_alloc_user_space(sizeof(*request));
901 if (!request || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
902 || __get_user(x, &argp->size)
903 || __put_user(x, &request->size))
904 return -EFAULT;
905
906 err = drm_ioctl(file, DRM_IOCTL_SG_ALLOC, (unsigned long)request);
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;
922 struct drm_scatter_gather __user *request;
923 unsigned long x;
924
925 request = compat_alloc_user_space(sizeof(*request));
926 if (!request || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
927 || __get_user(x, &argp->handle)
928 || __put_user(x << PAGE_SHIFT, &request->handle))
929 return -EFAULT;
930
931 return drm_ioctl(file, DRM_IOCTL_SG_FREE, (unsigned long)request);
932}
933
934#if defined(CONFIG_X86) || defined(CONFIG_IA64)
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));
954 if (!request ||
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
961 err = drm_ioctl(file, DRM_IOCTL_UPDATE_DRAW, (unsigned long)request);
962 return err;
963}
964#endif
965
966struct drm_wait_vblank_request32 {
967 enum drm_vblank_seq_type type;
968 unsigned int sequence;
969 u32 signal;
970};
971
972struct drm_wait_vblank_reply32 {
973 enum drm_vblank_seq_type type;
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;
989 union drm_wait_vblank __user *request;
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));
996 if (!request
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
1002 err = drm_ioctl(file, DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
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
1018typedef struct drm_mode_fb_cmd232 {
1019 u32 fb_id;
1020 u32 width;
1021 u32 height;
1022 u32 pixel_format;
1023 u32 flags;
1024 u32 handles[4];
1025 u32 pitches[4];
1026 u32 offsets[4];
1027 u64 modifier[4];
1028} __attribute__((packed)) drm_mode_fb_cmd232_t;
1029
1030static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd,
1031 unsigned long arg)
1032{
1033 struct drm_mode_fb_cmd232 __user *argp = (void __user *)arg;
1034 struct drm_mode_fb_cmd232 req32;
1035 struct drm_mode_fb_cmd2 __user *req64;
1036 int i;
1037 int err;
1038
1039 if (copy_from_user(&req32, argp, sizeof(req32)))
1040 return -EFAULT;
1041
1042 req64 = compat_alloc_user_space(sizeof(*req64));
1043
1044 if (!access_ok(VERIFY_WRITE, req64, sizeof(*req64))
1045 || __put_user(req32.width, &req64->width)
1046 || __put_user(req32.height, &req64->height)
1047 || __put_user(req32.pixel_format, &req64->pixel_format)
1048 || __put_user(req32.flags, &req64->flags))
1049 return -EFAULT;
1050
1051 for (i = 0; i < 4; i++) {
1052 if (__put_user(req32.handles[i], &req64->handles[i]))
1053 return -EFAULT;
1054 if (__put_user(req32.pitches[i], &req64->pitches[i]))
1055 return -EFAULT;
1056 if (__put_user(req32.offsets[i], &req64->offsets[i]))
1057 return -EFAULT;
1058 if (__put_user(req32.modifier[i], &req64->modifier[i]))
1059 return -EFAULT;
1060 }
1061
1062 err = drm_ioctl(file, DRM_IOCTL_MODE_ADDFB2, (unsigned long)req64);
1063 if (err)
1064 return err;
1065
1066 if (__get_user(req32.fb_id, &req64->fb_id))
1067 return -EFAULT;
1068
1069 if (copy_to_user(argp, &req32, sizeof(req32)))
1070 return -EFAULT;
1071
1072 return 0;
1073}
1074
1075static drm_ioctl_compat_t *drm_compat_ioctls[] = {
1076 [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
1077 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
1078 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap,
1079 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient,
1080 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats,
1081 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique,
1082 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap,
1083 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs,
1084 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs,
1085 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs,
1086 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs,
1087 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs,
1088 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap,
1089 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx,
1090 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx,
1091 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx,
1092 [DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma,
1093#if IS_ENABLED(CONFIG_AGP)
1094 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable,
1095 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info,
1096 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc,
1097 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free,
1098 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind,
1099 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind,
1100#endif
1101 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc,
1102 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free,
1103#if defined(CONFIG_X86) || defined(CONFIG_IA64)
1104 [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw,
1105#endif
1106 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
1107 [DRM_IOCTL_NR(DRM_IOCTL_MODE_ADDFB232)] = compat_drm_mode_addfb2,
1108};
1109
1110/**
1111 * Called whenever a 32-bit process running under a 64-bit kernel
1112 * performs an ioctl on /dev/drm.
1113 *
1114 * \param file_priv DRM file private.
1115 * \param cmd command.
1116 * \param arg user argument.
1117 * \return zero on success or negative number on failure.
1118 */
1119long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1120{
1121 unsigned int nr = DRM_IOCTL_NR(cmd);
1122 drm_ioctl_compat_t *fn;
1123 int ret;
1124
1125 /* Assume that ioctls without an explicit compat routine will just
1126 * work. This may not always be a good assumption, but it's better
1127 * than always failing.
1128 */
1129 if (nr >= ARRAY_SIZE(drm_compat_ioctls))
1130 return drm_ioctl(filp, cmd, arg);
1131
1132 fn = drm_compat_ioctls[nr];
1133
1134 if (fn != NULL)
1135 ret = (*fn) (filp, cmd, arg);
1136 else
1137 ret = drm_ioctl(filp, cmd, arg);
1138
1139 return ret;
1140}
1141
1142EXPORT_SYMBOL(drm_compat_ioctl);
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/ratelimit.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_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t)
69
70#define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
71
72typedef struct drm_version_32 {
73 int version_major; /**< Major version */
74 int version_minor; /**< Minor version */
75 int version_patchlevel; /**< Patch level */
76 u32 name_len; /**< Length of name buffer */
77 u32 name; /**< Name of driver */
78 u32 date_len; /**< Length of date buffer */
79 u32 date; /**< User-space buffer to hold date */
80 u32 desc_len; /**< Length of desc buffer */
81 u32 desc; /**< User-space buffer to hold desc */
82} drm_version32_t;
83
84static int compat_drm_version(struct file *file, unsigned int cmd,
85 unsigned long arg)
86{
87 drm_version32_t v32;
88 struct drm_version __user *version;
89 int err;
90
91 if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
92 return -EFAULT;
93
94 version = compat_alloc_user_space(sizeof(*version));
95 if (!access_ok(VERIFY_WRITE, version, sizeof(*version)))
96 return -EFAULT;
97 if (__put_user(v32.name_len, &version->name_len)
98 || __put_user((void __user *)(unsigned long)v32.name,
99 &version->name)
100 || __put_user(v32.date_len, &version->date_len)
101 || __put_user((void __user *)(unsigned long)v32.date,
102 &version->date)
103 || __put_user(v32.desc_len, &version->desc_len)
104 || __put_user((void __user *)(unsigned long)v32.desc,
105 &version->desc))
106 return -EFAULT;
107
108 err = drm_ioctl(file,
109 DRM_IOCTL_VERSION, (unsigned long)version);
110 if (err)
111 return err;
112
113 if (__get_user(v32.version_major, &version->version_major)
114 || __get_user(v32.version_minor, &version->version_minor)
115 || __get_user(v32.version_patchlevel, &version->version_patchlevel)
116 || __get_user(v32.name_len, &version->name_len)
117 || __get_user(v32.date_len, &version->date_len)
118 || __get_user(v32.desc_len, &version->desc_len))
119 return -EFAULT;
120
121 if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
122 return -EFAULT;
123 return 0;
124}
125
126typedef struct drm_unique32 {
127 u32 unique_len; /**< Length of unique */
128 u32 unique; /**< Unique name for driver instantiation */
129} drm_unique32_t;
130
131static int compat_drm_getunique(struct file *file, unsigned int cmd,
132 unsigned long arg)
133{
134 drm_unique32_t uq32;
135 struct drm_unique __user *u;
136 int err;
137
138 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
139 return -EFAULT;
140
141 u = compat_alloc_user_space(sizeof(*u));
142 if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
143 return -EFAULT;
144 if (__put_user(uq32.unique_len, &u->unique_len)
145 || __put_user((void __user *)(unsigned long)uq32.unique,
146 &u->unique))
147 return -EFAULT;
148
149 err = drm_ioctl(file, DRM_IOCTL_GET_UNIQUE, (unsigned long)u);
150 if (err)
151 return err;
152
153 if (__get_user(uq32.unique_len, &u->unique_len))
154 return -EFAULT;
155 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
156 return -EFAULT;
157 return 0;
158}
159
160static int compat_drm_setunique(struct file *file, unsigned int cmd,
161 unsigned long arg)
162{
163 drm_unique32_t uq32;
164 struct drm_unique __user *u;
165
166 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
167 return -EFAULT;
168
169 u = compat_alloc_user_space(sizeof(*u));
170 if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
171 return -EFAULT;
172 if (__put_user(uq32.unique_len, &u->unique_len)
173 || __put_user((void __user *)(unsigned long)uq32.unique,
174 &u->unique))
175 return -EFAULT;
176
177 return drm_ioctl(file, DRM_IOCTL_SET_UNIQUE, (unsigned long)u);
178}
179
180typedef struct drm_map32 {
181 u32 offset; /**< Requested physical address (0 for SAREA)*/
182 u32 size; /**< Requested physical size (bytes) */
183 enum drm_map_type type; /**< Type of memory to map */
184 enum drm_map_flags flags; /**< Flags */
185 u32 handle; /**< User-space: "Handle" to pass to mmap() */
186 int mtrr; /**< MTRR slot used */
187} drm_map32_t;
188
189static 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 struct drm_map __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, 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
226static 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 struct drm_map __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, DRM_IOCTL_ADD_MAP, (unsigned long)map);
248 if (err)
249 return err;
250
251 if (__get_user(m32.offset, &map->offset)
252 || __get_user(m32.mtrr, &map->mtrr)
253 || __get_user(handle, &map->handle))
254 return -EFAULT;
255
256 m32.handle = (unsigned long)handle;
257 if (m32.handle != (unsigned long)handle)
258 printk_ratelimited(KERN_ERR "compat_drm_addmap truncated handle"
259 " %p for type %d offset %x\n",
260 handle, m32.type, m32.offset);
261
262 if (copy_to_user(argp, &m32, sizeof(m32)))
263 return -EFAULT;
264
265 return 0;
266}
267
268static int compat_drm_rmmap(struct file *file, unsigned int cmd,
269 unsigned long arg)
270{
271 drm_map32_t __user *argp = (void __user *)arg;
272 struct drm_map __user *map;
273 u32 handle;
274
275 if (get_user(handle, &argp->handle))
276 return -EFAULT;
277
278 map = compat_alloc_user_space(sizeof(*map));
279 if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
280 return -EFAULT;
281 if (__put_user((void *)(unsigned long)handle, &map->handle))
282 return -EFAULT;
283
284 return drm_ioctl(file, DRM_IOCTL_RM_MAP, (unsigned long)map);
285}
286
287typedef struct drm_client32 {
288 int idx; /**< Which client desired? */
289 int auth; /**< Is client authenticated? */
290 u32 pid; /**< Process ID */
291 u32 uid; /**< User ID */
292 u32 magic; /**< Magic */
293 u32 iocs; /**< Ioctl count */
294} drm_client32_t;
295
296static int compat_drm_getclient(struct file *file, unsigned int cmd,
297 unsigned long arg)
298{
299 drm_client32_t c32;
300 drm_client32_t __user *argp = (void __user *)arg;
301 struct drm_client __user *client;
302 int idx, err;
303
304 if (get_user(idx, &argp->idx))
305 return -EFAULT;
306
307 client = compat_alloc_user_space(sizeof(*client));
308 if (!access_ok(VERIFY_WRITE, client, sizeof(*client)))
309 return -EFAULT;
310 if (__put_user(idx, &client->idx))
311 return -EFAULT;
312
313 err = drm_ioctl(file, DRM_IOCTL_GET_CLIENT, (unsigned long)client);
314 if (err)
315 return err;
316
317 if (__get_user(c32.auth, &client->auth)
318 || __get_user(c32.pid, &client->pid)
319 || __get_user(c32.uid, &client->uid)
320 || __get_user(c32.magic, &client->magic)
321 || __get_user(c32.iocs, &client->iocs))
322 return -EFAULT;
323
324 if (copy_to_user(argp, &c32, sizeof(c32)))
325 return -EFAULT;
326 return 0;
327}
328
329typedef struct drm_stats32 {
330 u32 count;
331 struct {
332 u32 value;
333 enum drm_stat_type type;
334 } data[15];
335} drm_stats32_t;
336
337static int compat_drm_getstats(struct file *file, unsigned int cmd,
338 unsigned long arg)
339{
340 drm_stats32_t s32;
341 drm_stats32_t __user *argp = (void __user *)arg;
342 struct drm_stats __user *stats;
343 int i, err;
344
345 stats = compat_alloc_user_space(sizeof(*stats));
346 if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats)))
347 return -EFAULT;
348
349 err = drm_ioctl(file, DRM_IOCTL_GET_STATS, (unsigned long)stats);
350 if (err)
351 return err;
352
353 if (__get_user(s32.count, &stats->count))
354 return -EFAULT;
355 for (i = 0; i < 15; ++i)
356 if (__get_user(s32.data[i].value, &stats->data[i].value)
357 || __get_user(s32.data[i].type, &stats->data[i].type))
358 return -EFAULT;
359
360 if (copy_to_user(argp, &s32, sizeof(s32)))
361 return -EFAULT;
362 return 0;
363}
364
365typedef struct drm_buf_desc32 {
366 int count; /**< Number of buffers of this size */
367 int size; /**< Size in bytes */
368 int low_mark; /**< Low water mark */
369 int high_mark; /**< High water mark */
370 int flags;
371 u32 agp_start; /**< Start address in the AGP aperture */
372} drm_buf_desc32_t;
373
374static int compat_drm_addbufs(struct file *file, unsigned int cmd,
375 unsigned long arg)
376{
377 drm_buf_desc32_t __user *argp = (void __user *)arg;
378 struct drm_buf_desc __user *buf;
379 int err;
380 unsigned long agp_start;
381
382 buf = compat_alloc_user_space(sizeof(*buf));
383 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))
384 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)))
385 return -EFAULT;
386
387 if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start))
388 || __get_user(agp_start, &argp->agp_start)
389 || __put_user(agp_start, &buf->agp_start))
390 return -EFAULT;
391
392 err = drm_ioctl(file, DRM_IOCTL_ADD_BUFS, (unsigned long)buf);
393 if (err)
394 return err;
395
396 if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start))
397 || __get_user(agp_start, &buf->agp_start)
398 || __put_user(agp_start, &argp->agp_start))
399 return -EFAULT;
400
401 return 0;
402}
403
404static int compat_drm_markbufs(struct file *file, unsigned int cmd,
405 unsigned long arg)
406{
407 drm_buf_desc32_t b32;
408 drm_buf_desc32_t __user *argp = (void __user *)arg;
409 struct drm_buf_desc __user *buf;
410
411 if (copy_from_user(&b32, argp, sizeof(b32)))
412 return -EFAULT;
413
414 buf = compat_alloc_user_space(sizeof(*buf));
415 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
416 return -EFAULT;
417
418 if (__put_user(b32.size, &buf->size)
419 || __put_user(b32.low_mark, &buf->low_mark)
420 || __put_user(b32.high_mark, &buf->high_mark))
421 return -EFAULT;
422
423 return drm_ioctl(file, DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
424}
425
426typedef struct drm_buf_info32 {
427 int count; /**< Entries in list */
428 u32 list;
429} drm_buf_info32_t;
430
431static int compat_drm_infobufs(struct file *file, unsigned int cmd,
432 unsigned long arg)
433{
434 drm_buf_info32_t req32;
435 drm_buf_info32_t __user *argp = (void __user *)arg;
436 drm_buf_desc32_t __user *to;
437 struct drm_buf_info __user *request;
438 struct drm_buf_desc __user *list;
439 size_t nbytes;
440 int i, err;
441 int count, actual;
442
443 if (copy_from_user(&req32, argp, sizeof(req32)))
444 return -EFAULT;
445
446 count = req32.count;
447 to = (drm_buf_desc32_t __user *) (unsigned long)req32.list;
448 if (count < 0)
449 count = 0;
450 if (count > 0
451 && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t)))
452 return -EFAULT;
453
454 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_desc);
455 request = compat_alloc_user_space(nbytes);
456 if (!access_ok(VERIFY_WRITE, request, nbytes))
457 return -EFAULT;
458 list = (struct drm_buf_desc *) (request + 1);
459
460 if (__put_user(count, &request->count)
461 || __put_user(list, &request->list))
462 return -EFAULT;
463
464 err = drm_ioctl(file, DRM_IOCTL_INFO_BUFS, (unsigned long)request);
465 if (err)
466 return err;
467
468 if (__get_user(actual, &request->count))
469 return -EFAULT;
470 if (count >= actual)
471 for (i = 0; i < actual; ++i)
472 if (__copy_in_user(&to[i], &list[i],
473 offsetof(struct drm_buf_desc, flags)))
474 return -EFAULT;
475
476 if (__put_user(actual, &argp->count))
477 return -EFAULT;
478
479 return 0;
480}
481
482typedef struct drm_buf_pub32 {
483 int idx; /**< Index into the master buffer list */
484 int total; /**< Buffer size */
485 int used; /**< Amount of buffer in use (for DMA) */
486 u32 address; /**< Address of buffer */
487} drm_buf_pub32_t;
488
489typedef struct drm_buf_map32 {
490 int count; /**< Length of the buffer list */
491 u32 virtual; /**< Mmap'd area in user-virtual */
492 u32 list; /**< Buffer information */
493} drm_buf_map32_t;
494
495static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
496 unsigned long arg)
497{
498 drm_buf_map32_t __user *argp = (void __user *)arg;
499 drm_buf_map32_t req32;
500 drm_buf_pub32_t __user *list32;
501 struct drm_buf_map __user *request;
502 struct drm_buf_pub __user *list;
503 int i, err;
504 int count, actual;
505 size_t nbytes;
506 void __user *addr;
507
508 if (copy_from_user(&req32, argp, sizeof(req32)))
509 return -EFAULT;
510 count = req32.count;
511 list32 = (void __user *)(unsigned long)req32.list;
512
513 if (count < 0)
514 return -EINVAL;
515 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub);
516 request = compat_alloc_user_space(nbytes);
517 if (!access_ok(VERIFY_WRITE, request, nbytes))
518 return -EFAULT;
519 list = (struct drm_buf_pub *) (request + 1);
520
521 if (__put_user(count, &request->count)
522 || __put_user(list, &request->list))
523 return -EFAULT;
524
525 err = drm_ioctl(file, DRM_IOCTL_MAP_BUFS, (unsigned long)request);
526 if (err)
527 return err;
528
529 if (__get_user(actual, &request->count))
530 return -EFAULT;
531 if (count >= actual)
532 for (i = 0; i < actual; ++i)
533 if (__copy_in_user(&list32[i], &list[i],
534 offsetof(struct drm_buf_pub, address))
535 || __get_user(addr, &list[i].address)
536 || __put_user((unsigned long)addr,
537 &list32[i].address))
538 return -EFAULT;
539
540 if (__put_user(actual, &argp->count)
541 || __get_user(addr, &request->virtual)
542 || __put_user((unsigned long)addr, &argp->virtual))
543 return -EFAULT;
544
545 return 0;
546}
547
548typedef struct drm_buf_free32 {
549 int count;
550 u32 list;
551} drm_buf_free32_t;
552
553static int compat_drm_freebufs(struct file *file, unsigned int cmd,
554 unsigned long arg)
555{
556 drm_buf_free32_t req32;
557 struct drm_buf_free __user *request;
558 drm_buf_free32_t __user *argp = (void __user *)arg;
559
560 if (copy_from_user(&req32, argp, sizeof(req32)))
561 return -EFAULT;
562
563 request = compat_alloc_user_space(sizeof(*request));
564 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
565 return -EFAULT;
566 if (__put_user(req32.count, &request->count)
567 || __put_user((int __user *)(unsigned long)req32.list,
568 &request->list))
569 return -EFAULT;
570
571 return drm_ioctl(file, DRM_IOCTL_FREE_BUFS, (unsigned long)request);
572}
573
574typedef struct drm_ctx_priv_map32 {
575 unsigned int ctx_id; /**< Context requesting private mapping */
576 u32 handle; /**< Handle of map */
577} drm_ctx_priv_map32_t;
578
579static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
580 unsigned long arg)
581{
582 drm_ctx_priv_map32_t req32;
583 struct drm_ctx_priv_map __user *request;
584 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
585
586 if (copy_from_user(&req32, argp, sizeof(req32)))
587 return -EFAULT;
588
589 request = compat_alloc_user_space(sizeof(*request));
590 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
591 return -EFAULT;
592 if (__put_user(req32.ctx_id, &request->ctx_id)
593 || __put_user((void *)(unsigned long)req32.handle,
594 &request->handle))
595 return -EFAULT;
596
597 return drm_ioctl(file, DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
598}
599
600static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
601 unsigned long arg)
602{
603 struct drm_ctx_priv_map __user *request;
604 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
605 int err;
606 unsigned int ctx_id;
607 void *handle;
608
609 if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp))
610 || __get_user(ctx_id, &argp->ctx_id))
611 return -EFAULT;
612
613 request = compat_alloc_user_space(sizeof(*request));
614 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
615 return -EFAULT;
616 if (__put_user(ctx_id, &request->ctx_id))
617 return -EFAULT;
618
619 err = drm_ioctl(file, DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
620 if (err)
621 return err;
622
623 if (__get_user(handle, &request->handle)
624 || __put_user((unsigned long)handle, &argp->handle))
625 return -EFAULT;
626
627 return 0;
628}
629
630typedef struct drm_ctx_res32 {
631 int count;
632 u32 contexts;
633} drm_ctx_res32_t;
634
635static int compat_drm_resctx(struct file *file, unsigned int cmd,
636 unsigned long arg)
637{
638 drm_ctx_res32_t __user *argp = (void __user *)arg;
639 drm_ctx_res32_t res32;
640 struct drm_ctx_res __user *res;
641 int err;
642
643 if (copy_from_user(&res32, argp, sizeof(res32)))
644 return -EFAULT;
645
646 res = compat_alloc_user_space(sizeof(*res));
647 if (!access_ok(VERIFY_WRITE, res, sizeof(*res)))
648 return -EFAULT;
649 if (__put_user(res32.count, &res->count)
650 || __put_user((struct drm_ctx __user *) (unsigned long)res32.contexts,
651 &res->contexts))
652 return -EFAULT;
653
654 err = drm_ioctl(file, DRM_IOCTL_RES_CTX, (unsigned long)res);
655 if (err)
656 return err;
657
658 if (__get_user(res32.count, &res->count)
659 || __put_user(res32.count, &argp->count))
660 return -EFAULT;
661
662 return 0;
663}
664
665typedef struct drm_dma32 {
666 int context; /**< Context handle */
667 int send_count; /**< Number of buffers to send */
668 u32 send_indices; /**< List of handles to buffers */
669 u32 send_sizes; /**< Lengths of data to send */
670 enum drm_dma_flags flags; /**< Flags */
671 int request_count; /**< Number of buffers requested */
672 int request_size; /**< Desired size for buffers */
673 u32 request_indices; /**< Buffer information */
674 u32 request_sizes;
675 int granted_count; /**< Number of buffers granted */
676} drm_dma32_t;
677
678static int compat_drm_dma(struct file *file, unsigned int cmd,
679 unsigned long arg)
680{
681 drm_dma32_t d32;
682 drm_dma32_t __user *argp = (void __user *)arg;
683 struct drm_dma __user *d;
684 int err;
685
686 if (copy_from_user(&d32, argp, sizeof(d32)))
687 return -EFAULT;
688
689 d = compat_alloc_user_space(sizeof(*d));
690 if (!access_ok(VERIFY_WRITE, d, sizeof(*d)))
691 return -EFAULT;
692
693 if (__put_user(d32.context, &d->context)
694 || __put_user(d32.send_count, &d->send_count)
695 || __put_user((int __user *)(unsigned long)d32.send_indices,
696 &d->send_indices)
697 || __put_user((int __user *)(unsigned long)d32.send_sizes,
698 &d->send_sizes)
699 || __put_user(d32.flags, &d->flags)
700 || __put_user(d32.request_count, &d->request_count)
701 || __put_user((int __user *)(unsigned long)d32.request_indices,
702 &d->request_indices)
703 || __put_user((int __user *)(unsigned long)d32.request_sizes,
704 &d->request_sizes))
705 return -EFAULT;
706
707 err = drm_ioctl(file, DRM_IOCTL_DMA, (unsigned long)d);
708 if (err)
709 return err;
710
711 if (__get_user(d32.request_size, &d->request_size)
712 || __get_user(d32.granted_count, &d->granted_count)
713 || __put_user(d32.request_size, &argp->request_size)
714 || __put_user(d32.granted_count, &argp->granted_count))
715 return -EFAULT;
716
717 return 0;
718}
719
720#if __OS_HAS_AGP
721typedef struct drm_agp_mode32 {
722 u32 mode; /**< AGP mode */
723} drm_agp_mode32_t;
724
725static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
726 unsigned long arg)
727{
728 drm_agp_mode32_t __user *argp = (void __user *)arg;
729 drm_agp_mode32_t m32;
730 struct drm_agp_mode __user *mode;
731
732 if (get_user(m32.mode, &argp->mode))
733 return -EFAULT;
734
735 mode = compat_alloc_user_space(sizeof(*mode));
736 if (put_user(m32.mode, &mode->mode))
737 return -EFAULT;
738
739 return drm_ioctl(file, DRM_IOCTL_AGP_ENABLE, (unsigned long)mode);
740}
741
742typedef struct drm_agp_info32 {
743 int agp_version_major;
744 int agp_version_minor;
745 u32 mode;
746 u32 aperture_base; /* physical address */
747 u32 aperture_size; /* bytes */
748 u32 memory_allowed; /* bytes */
749 u32 memory_used;
750
751 /* PCI information */
752 unsigned short id_vendor;
753 unsigned short id_device;
754} drm_agp_info32_t;
755
756static int compat_drm_agp_info(struct file *file, unsigned int cmd,
757 unsigned long arg)
758{
759 drm_agp_info32_t __user *argp = (void __user *)arg;
760 drm_agp_info32_t i32;
761 struct drm_agp_info __user *info;
762 int err;
763
764 info = compat_alloc_user_space(sizeof(*info));
765 if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
766 return -EFAULT;
767
768 err = drm_ioctl(file, DRM_IOCTL_AGP_INFO, (unsigned long)info);
769 if (err)
770 return err;
771
772 if (__get_user(i32.agp_version_major, &info->agp_version_major)
773 || __get_user(i32.agp_version_minor, &info->agp_version_minor)
774 || __get_user(i32.mode, &info->mode)
775 || __get_user(i32.aperture_base, &info->aperture_base)
776 || __get_user(i32.aperture_size, &info->aperture_size)
777 || __get_user(i32.memory_allowed, &info->memory_allowed)
778 || __get_user(i32.memory_used, &info->memory_used)
779 || __get_user(i32.id_vendor, &info->id_vendor)
780 || __get_user(i32.id_device, &info->id_device))
781 return -EFAULT;
782
783 if (copy_to_user(argp, &i32, sizeof(i32)))
784 return -EFAULT;
785
786 return 0;
787}
788
789typedef struct drm_agp_buffer32 {
790 u32 size; /**< In bytes -- will round to page boundary */
791 u32 handle; /**< Used for binding / unbinding */
792 u32 type; /**< Type of memory to allocate */
793 u32 physical; /**< Physical used by i810 */
794} drm_agp_buffer32_t;
795
796static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
797 unsigned long arg)
798{
799 drm_agp_buffer32_t __user *argp = (void __user *)arg;
800 drm_agp_buffer32_t req32;
801 struct drm_agp_buffer __user *request;
802 int err;
803
804 if (copy_from_user(&req32, argp, sizeof(req32)))
805 return -EFAULT;
806
807 request = compat_alloc_user_space(sizeof(*request));
808 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
809 || __put_user(req32.size, &request->size)
810 || __put_user(req32.type, &request->type))
811 return -EFAULT;
812
813 err = drm_ioctl(file, DRM_IOCTL_AGP_ALLOC, (unsigned long)request);
814 if (err)
815 return err;
816
817 if (__get_user(req32.handle, &request->handle)
818 || __get_user(req32.physical, &request->physical)
819 || copy_to_user(argp, &req32, sizeof(req32))) {
820 drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
821 return -EFAULT;
822 }
823
824 return 0;
825}
826
827static int compat_drm_agp_free(struct file *file, unsigned int cmd,
828 unsigned long arg)
829{
830 drm_agp_buffer32_t __user *argp = (void __user *)arg;
831 struct drm_agp_buffer __user *request;
832 u32 handle;
833
834 request = compat_alloc_user_space(sizeof(*request));
835 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
836 || get_user(handle, &argp->handle)
837 || __put_user(handle, &request->handle))
838 return -EFAULT;
839
840 return drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
841}
842
843typedef struct drm_agp_binding32 {
844 u32 handle; /**< From drm_agp_buffer */
845 u32 offset; /**< In bytes -- will round to page boundary */
846} drm_agp_binding32_t;
847
848static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
849 unsigned long arg)
850{
851 drm_agp_binding32_t __user *argp = (void __user *)arg;
852 drm_agp_binding32_t req32;
853 struct drm_agp_binding __user *request;
854
855 if (copy_from_user(&req32, argp, sizeof(req32)))
856 return -EFAULT;
857
858 request = compat_alloc_user_space(sizeof(*request));
859 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
860 || __put_user(req32.handle, &request->handle)
861 || __put_user(req32.offset, &request->offset))
862 return -EFAULT;
863
864 return drm_ioctl(file, DRM_IOCTL_AGP_BIND, (unsigned long)request);
865}
866
867static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
868 unsigned long arg)
869{
870 drm_agp_binding32_t __user *argp = (void __user *)arg;
871 struct drm_agp_binding __user *request;
872 u32 handle;
873
874 request = compat_alloc_user_space(sizeof(*request));
875 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
876 || get_user(handle, &argp->handle)
877 || __put_user(handle, &request->handle))
878 return -EFAULT;
879
880 return drm_ioctl(file, DRM_IOCTL_AGP_UNBIND, (unsigned long)request);
881}
882#endif /* __OS_HAS_AGP */
883
884typedef struct drm_scatter_gather32 {
885 u32 size; /**< In bytes -- will round to page boundary */
886 u32 handle; /**< Used for mapping / unmapping */
887} drm_scatter_gather32_t;
888
889static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
890 unsigned long arg)
891{
892 drm_scatter_gather32_t __user *argp = (void __user *)arg;
893 struct drm_scatter_gather __user *request;
894 int err;
895 unsigned long x;
896
897 request = compat_alloc_user_space(sizeof(*request));
898 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
899 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
900 || __get_user(x, &argp->size)
901 || __put_user(x, &request->size))
902 return -EFAULT;
903
904 err = drm_ioctl(file, DRM_IOCTL_SG_ALLOC, (unsigned long)request);
905 if (err)
906 return err;
907
908 /* XXX not sure about the handle conversion here... */
909 if (__get_user(x, &request->handle)
910 || __put_user(x >> PAGE_SHIFT, &argp->handle))
911 return -EFAULT;
912
913 return 0;
914}
915
916static int compat_drm_sg_free(struct file *file, unsigned int cmd,
917 unsigned long arg)
918{
919 drm_scatter_gather32_t __user *argp = (void __user *)arg;
920 struct drm_scatter_gather __user *request;
921 unsigned long x;
922
923 request = compat_alloc_user_space(sizeof(*request));
924 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
925 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
926 || __get_user(x, &argp->handle)
927 || __put_user(x << PAGE_SHIFT, &request->handle))
928 return -EFAULT;
929
930 return drm_ioctl(file, DRM_IOCTL_SG_FREE, (unsigned long)request);
931}
932
933#if defined(CONFIG_X86) || defined(CONFIG_IA64)
934typedef struct drm_update_draw32 {
935 drm_drawable_t handle;
936 unsigned int type;
937 unsigned int num;
938 /* 64-bit version has a 32-bit pad here */
939 u64 data; /**< Pointer */
940} __attribute__((packed)) drm_update_draw32_t;
941
942static int compat_drm_update_draw(struct file *file, unsigned int cmd,
943 unsigned long arg)
944{
945 drm_update_draw32_t update32;
946 struct drm_update_draw __user *request;
947 int err;
948
949 if (copy_from_user(&update32, (void __user *)arg, sizeof(update32)))
950 return -EFAULT;
951
952 request = compat_alloc_user_space(sizeof(*request));
953 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) ||
954 __put_user(update32.handle, &request->handle) ||
955 __put_user(update32.type, &request->type) ||
956 __put_user(update32.num, &request->num) ||
957 __put_user(update32.data, &request->data))
958 return -EFAULT;
959
960 err = drm_ioctl(file, DRM_IOCTL_UPDATE_DRAW, (unsigned long)request);
961 return err;
962}
963#endif
964
965struct drm_wait_vblank_request32 {
966 enum drm_vblank_seq_type type;
967 unsigned int sequence;
968 u32 signal;
969};
970
971struct drm_wait_vblank_reply32 {
972 enum drm_vblank_seq_type type;
973 unsigned int sequence;
974 s32 tval_sec;
975 s32 tval_usec;
976};
977
978typedef union drm_wait_vblank32 {
979 struct drm_wait_vblank_request32 request;
980 struct drm_wait_vblank_reply32 reply;
981} drm_wait_vblank32_t;
982
983static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
984 unsigned long arg)
985{
986 drm_wait_vblank32_t __user *argp = (void __user *)arg;
987 drm_wait_vblank32_t req32;
988 union drm_wait_vblank __user *request;
989 int err;
990
991 if (copy_from_user(&req32, argp, sizeof(req32)))
992 return -EFAULT;
993
994 request = compat_alloc_user_space(sizeof(*request));
995 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
996 || __put_user(req32.request.type, &request->request.type)
997 || __put_user(req32.request.sequence, &request->request.sequence)
998 || __put_user(req32.request.signal, &request->request.signal))
999 return -EFAULT;
1000
1001 err = drm_ioctl(file, DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
1002 if (err)
1003 return err;
1004
1005 if (__get_user(req32.reply.type, &request->reply.type)
1006 || __get_user(req32.reply.sequence, &request->reply.sequence)
1007 || __get_user(req32.reply.tval_sec, &request->reply.tval_sec)
1008 || __get_user(req32.reply.tval_usec, &request->reply.tval_usec))
1009 return -EFAULT;
1010
1011 if (copy_to_user(argp, &req32, sizeof(req32)))
1012 return -EFAULT;
1013
1014 return 0;
1015}
1016
1017drm_ioctl_compat_t *drm_compat_ioctls[] = {
1018 [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
1019 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
1020 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap,
1021 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient,
1022 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats,
1023 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique,
1024 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap,
1025 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs,
1026 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs,
1027 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs,
1028 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs,
1029 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs,
1030 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap,
1031 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx,
1032 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx,
1033 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx,
1034 [DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma,
1035#if __OS_HAS_AGP
1036 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable,
1037 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info,
1038 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc,
1039 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free,
1040 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind,
1041 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind,
1042#endif
1043 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc,
1044 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free,
1045#if defined(CONFIG_X86) || defined(CONFIG_IA64)
1046 [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw,
1047#endif
1048 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
1049};
1050
1051/**
1052 * Called whenever a 32-bit process running under a 64-bit kernel
1053 * performs an ioctl on /dev/drm.
1054 *
1055 * \param file_priv DRM file private.
1056 * \param cmd command.
1057 * \param arg user argument.
1058 * \return zero on success or negative number on failure.
1059 */
1060long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1061{
1062 unsigned int nr = DRM_IOCTL_NR(cmd);
1063 drm_ioctl_compat_t *fn;
1064 int ret;
1065
1066 /* Assume that ioctls without an explicit compat routine will just
1067 * work. This may not always be a good assumption, but it's better
1068 * than always failing.
1069 */
1070 if (nr >= ARRAY_SIZE(drm_compat_ioctls))
1071 return drm_ioctl(filp, cmd, arg);
1072
1073 fn = drm_compat_ioctls[nr];
1074
1075 if (fn != NULL)
1076 ret = (*fn) (filp, cmd, arg);
1077 else
1078 ret = drm_ioctl(filp, cmd, arg);
1079
1080 return ret;
1081}
1082
1083EXPORT_SYMBOL(drm_compat_ioctl);