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Linux 4.2.1
[linux/fpc-iii.git] / drivers / gpu / drm / drm_ioc32.c
blob9cfcd0aef0dfacf8389407d78981b78c8c85ddf8
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
75 typedef 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
87 static 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 (!access_ok(VERIFY_WRITE, version, sizeof(*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
129 typedef struct drm_unique32 {
130 u32 unique_len; /**< Length of unique */
131 u32 unique; /**< Unique name for driver instantiation */
132 } drm_unique32_t;
133
134 static 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 (!access_ok(VERIFY_WRITE, u, sizeof(*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
163 static 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 (!access_ok(VERIFY_WRITE, u, sizeof(*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
183 typedef 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
192 static 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 (!access_ok(VERIFY_WRITE, map, sizeof(*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
229 static 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 (!access_ok(VERIFY_WRITE, map, sizeof(*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
271 static 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 (!access_ok(VERIFY_WRITE, map, sizeof(*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
290 typedef struct drm_client32 {
291 int idx; /**< Which client desired? */
292 int auth; /**< Is client authenticated? */
293 u32 pid; /**< Process ID */
294 u32 uid; /**< User ID */
295 u32 magic; /**< Magic */
296 u32 iocs; /**< Ioctl count */
297 } drm_client32_t;
298
299 static int compat_drm_getclient(struct file *file, unsigned int cmd,
300 unsigned long arg)
301 {
302 drm_client32_t c32;
303 drm_client32_t __user *argp = (void __user *)arg;
304 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 (!access_ok(VERIFY_WRITE, client, sizeof(*client)))
312 return -EFAULT;
313 if (__put_user(idx, &client->idx))
314 return -EFAULT;
315
316 err = drm_ioctl(file, 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
333 typedef 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
341 static int compat_drm_getstats(struct file *file, unsigned int cmd,
342 unsigned long arg)
343 {
344 drm_stats32_t s32;
345 drm_stats32_t __user *argp = (void __user *)arg;
346 struct drm_stats __user *stats;
347 int i, err;
348
349 stats = compat_alloc_user_space(sizeof(*stats));
350 if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats)))
351 return -EFAULT;
352
353 err = drm_ioctl(file, DRM_IOCTL_GET_STATS, (unsigned long)stats);
354 if (err)
355 return err;
356
357 if (__get_user(s32.count, &stats->count))
358 return -EFAULT;
359 for (i = 0; i < 15; ++i)
360 if (__get_user(s32.data[i].value, &stats->data[i].value)
361 || __get_user(s32.data[i].type, &stats->data[i].type))
362 return -EFAULT;
363
364 if (copy_to_user(argp, &s32, sizeof(s32)))
365 return -EFAULT;
366 return 0;
367 }
368
369 typedef struct drm_buf_desc32 {
370 int count; /**< Number of buffers of this size */
371 int size; /**< Size in bytes */
372 int low_mark; /**< Low water mark */
373 int high_mark; /**< High water mark */
374 int flags;
375 u32 agp_start; /**< Start address in the AGP aperture */
376 } drm_buf_desc32_t;
377
378 static int compat_drm_addbufs(struct file *file, unsigned int cmd,
379 unsigned long arg)
380 {
381 drm_buf_desc32_t __user *argp = (void __user *)arg;
382 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 (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))
388 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)))
389 return -EFAULT;
390
391 if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start))
392 || __get_user(agp_start, &argp->agp_start)
393 || __put_user(agp_start, &buf->agp_start))
394 return -EFAULT;
395
396 err = drm_ioctl(file, DRM_IOCTL_ADD_BUFS, (unsigned long)buf);
397 if (err)
398 return err;
399
400 if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start))
401 || __get_user(agp_start, &buf->agp_start)
402 || __put_user(agp_start, &argp->agp_start))
403 return -EFAULT;
404
405 return 0;
406 }
407
408 static int compat_drm_markbufs(struct file *file, unsigned int cmd,
409 unsigned long arg)
410 {
411 drm_buf_desc32_t b32;
412 drm_buf_desc32_t __user *argp = (void __user *)arg;
413 struct drm_buf_desc __user *buf;
414
415 if (copy_from_user(&b32, argp, sizeof(b32)))
416 return -EFAULT;
417
418 buf = compat_alloc_user_space(sizeof(*buf));
419 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
420 return -EFAULT;
421
422 if (__put_user(b32.size, &buf->size)
423 || __put_user(b32.low_mark, &buf->low_mark)
424 || __put_user(b32.high_mark, &buf->high_mark))
425 return -EFAULT;
426
427 return drm_ioctl(file, DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
428 }
429
430 typedef struct drm_buf_info32 {
431 int count; /**< Entries in list */
432 u32 list;
433 } drm_buf_info32_t;
434
435 static int compat_drm_infobufs(struct file *file, unsigned int cmd,
436 unsigned long arg)
437 {
438 drm_buf_info32_t req32;
439 drm_buf_info32_t __user *argp = (void __user *)arg;
440 drm_buf_desc32_t __user *to;
441 struct drm_buf_info __user *request;
442 struct drm_buf_desc __user *list;
443 size_t nbytes;
444 int i, err;
445 int count, actual;
446
447 if (copy_from_user(&req32, argp, sizeof(req32)))
448 return -EFAULT;
449
450 count = req32.count;
451 to = (drm_buf_desc32_t __user *) (unsigned long)req32.list;
452 if (count < 0)
453 count = 0;
454 if (count > 0
455 && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t)))
456 return -EFAULT;
457
458 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_desc);
459 request = compat_alloc_user_space(nbytes);
460 if (!access_ok(VERIFY_WRITE, request, nbytes))
461 return -EFAULT;
462 list = (struct drm_buf_desc *) (request + 1);
463
464 if (__put_user(count, &request->count)
465 || __put_user(list, &request->list))
466 return -EFAULT;
467
468 err = drm_ioctl(file, DRM_IOCTL_INFO_BUFS, (unsigned long)request);
469 if (err)
470 return err;
471
472 if (__get_user(actual, &request->count))
473 return -EFAULT;
474 if (count >= actual)
475 for (i = 0; i < actual; ++i)
476 if (__copy_in_user(&to[i], &list[i],
477 offsetof(struct drm_buf_desc, flags)))
478 return -EFAULT;
479
480 if (__put_user(actual, &argp->count))
481 return -EFAULT;
482
483 return 0;
484 }
485
486 typedef struct drm_buf_pub32 {
487 int idx; /**< Index into the master buffer list */
488 int total; /**< Buffer size */
489 int used; /**< Amount of buffer in use (for DMA) */
490 u32 address; /**< Address of buffer */
491 } drm_buf_pub32_t;
492
493 typedef struct drm_buf_map32 {
494 int count; /**< Length of the buffer list */
495 u32 virtual; /**< Mmap'd area in user-virtual */
496 u32 list; /**< Buffer information */
497 } drm_buf_map32_t;
498
499 static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
500 unsigned long arg)
501 {
502 drm_buf_map32_t __user *argp = (void __user *)arg;
503 drm_buf_map32_t req32;
504 drm_buf_pub32_t __user *list32;
505 struct drm_buf_map __user *request;
506 struct drm_buf_pub __user *list;
507 int i, err;
508 int count, actual;
509 size_t nbytes;
510 void __user *addr;
511
512 if (copy_from_user(&req32, argp, sizeof(req32)))
513 return -EFAULT;
514 count = req32.count;
515 list32 = (void __user *)(unsigned long)req32.list;
516
517 if (count < 0)
518 return -EINVAL;
519 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub);
520 request = compat_alloc_user_space(nbytes);
521 if (!access_ok(VERIFY_WRITE, request, nbytes))
522 return -EFAULT;
523 list = (struct drm_buf_pub *) (request + 1);
524
525 if (__put_user(count, &request->count)
526 || __put_user(list, &request->list))
527 return -EFAULT;
528
529 err = drm_ioctl(file, DRM_IOCTL_MAP_BUFS, (unsigned long)request);
530 if (err)
531 return err;
532
533 if (__get_user(actual, &request->count))
534 return -EFAULT;
535 if (count >= actual)
536 for (i = 0; i < actual; ++i)
537 if (__copy_in_user(&list32[i], &list[i],
538 offsetof(struct drm_buf_pub, address))
539 || __get_user(addr, &list[i].address)
540 || __put_user((unsigned long)addr,
541 &list32[i].address))
542 return -EFAULT;
543
544 if (__put_user(actual, &argp->count)
545 || __get_user(addr, &request->virtual)
546 || __put_user((unsigned long)addr, &argp->virtual))
547 return -EFAULT;
548
549 return 0;
550 }
551
552 typedef struct drm_buf_free32 {
553 int count;
554 u32 list;
555 } drm_buf_free32_t;
556
557 static int compat_drm_freebufs(struct file *file, unsigned int cmd,
558 unsigned long arg)
559 {
560 drm_buf_free32_t req32;
561 struct drm_buf_free __user *request;
562 drm_buf_free32_t __user *argp = (void __user *)arg;
563
564 if (copy_from_user(&req32, argp, sizeof(req32)))
565 return -EFAULT;
566
567 request = compat_alloc_user_space(sizeof(*request));
568 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
569 return -EFAULT;
570 if (__put_user(req32.count, &request->count)
571 || __put_user((int __user *)(unsigned long)req32.list,
572 &request->list))
573 return -EFAULT;
574
575 return drm_ioctl(file, DRM_IOCTL_FREE_BUFS, (unsigned long)request);
576 }
577
578 typedef struct drm_ctx_priv_map32 {
579 unsigned int ctx_id; /**< Context requesting private mapping */
580 u32 handle; /**< Handle of map */
581 } drm_ctx_priv_map32_t;
582
583 static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
584 unsigned long arg)
585 {
586 drm_ctx_priv_map32_t req32;
587 struct drm_ctx_priv_map __user *request;
588 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
589
590 if (copy_from_user(&req32, argp, sizeof(req32)))
591 return -EFAULT;
592
593 request = compat_alloc_user_space(sizeof(*request));
594 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
595 return -EFAULT;
596 if (__put_user(req32.ctx_id, &request->ctx_id)
597 || __put_user((void *)(unsigned long)req32.handle,
598 &request->handle))
599 return -EFAULT;
600
601 return drm_ioctl(file, DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
602 }
603
604 static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
605 unsigned long arg)
606 {
607 struct drm_ctx_priv_map __user *request;
608 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
609 int err;
610 unsigned int ctx_id;
611 void *handle;
612
613 if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp))
614 || __get_user(ctx_id, &argp->ctx_id))
615 return -EFAULT;
616
617 request = compat_alloc_user_space(sizeof(*request));
618 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
619 return -EFAULT;
620 if (__put_user(ctx_id, &request->ctx_id))
621 return -EFAULT;
622
623 err = drm_ioctl(file, DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
624 if (err)
625 return err;
626
627 if (__get_user(handle, &request->handle)
628 || __put_user((unsigned long)handle, &argp->handle))
629 return -EFAULT;
630
631 return 0;
632 }
633
634 typedef struct drm_ctx_res32 {
635 int count;
636 u32 contexts;
637 } drm_ctx_res32_t;
638
639 static int compat_drm_resctx(struct file *file, unsigned int cmd,
640 unsigned long arg)
641 {
642 drm_ctx_res32_t __user *argp = (void __user *)arg;
643 drm_ctx_res32_t res32;
644 struct drm_ctx_res __user *res;
645 int err;
646
647 if (copy_from_user(&res32, argp, sizeof(res32)))
648 return -EFAULT;
649
650 res = compat_alloc_user_space(sizeof(*res));
651 if (!access_ok(VERIFY_WRITE, res, sizeof(*res)))
652 return -EFAULT;
653 if (__put_user(res32.count, &res->count)
654 || __put_user((struct drm_ctx __user *) (unsigned long)res32.contexts,
655 &res->contexts))
656 return -EFAULT;
657
658 err = drm_ioctl(file, DRM_IOCTL_RES_CTX, (unsigned long)res);
659 if (err)
660 return err;
661
662 if (__get_user(res32.count, &res->count)
663 || __put_user(res32.count, &argp->count))
664 return -EFAULT;
665
666 return 0;
667 }
668
669 typedef struct drm_dma32 {
670 int context; /**< Context handle */
671 int send_count; /**< Number of buffers to send */
672 u32 send_indices; /**< List of handles to buffers */
673 u32 send_sizes; /**< Lengths of data to send */
674 enum drm_dma_flags flags; /**< Flags */
675 int request_count; /**< Number of buffers requested */
676 int request_size; /**< Desired size for buffers */
677 u32 request_indices; /**< Buffer information */
678 u32 request_sizes;
679 int granted_count; /**< Number of buffers granted */
680 } drm_dma32_t;
681
682 static int compat_drm_dma(struct file *file, unsigned int cmd,
683 unsigned long arg)
684 {
685 drm_dma32_t d32;
686 drm_dma32_t __user *argp = (void __user *)arg;
687 struct drm_dma __user *d;
688 int err;
689
690 if (copy_from_user(&d32, argp, sizeof(d32)))
691 return -EFAULT;
692
693 d = compat_alloc_user_space(sizeof(*d));
694 if (!access_ok(VERIFY_WRITE, d, sizeof(*d)))
695 return -EFAULT;
696
697 if (__put_user(d32.context, &d->context)
698 || __put_user(d32.send_count, &d->send_count)
699 || __put_user((int __user *)(unsigned long)d32.send_indices,
700 &d->send_indices)
701 || __put_user((int __user *)(unsigned long)d32.send_sizes,
702 &d->send_sizes)
703 || __put_user(d32.flags, &d->flags)
704 || __put_user(d32.request_count, &d->request_count)
705 || __put_user((int __user *)(unsigned long)d32.request_indices,
706 &d->request_indices)
707 || __put_user((int __user *)(unsigned long)d32.request_sizes,
708 &d->request_sizes))
709 return -EFAULT;
710
711 err = drm_ioctl(file, DRM_IOCTL_DMA, (unsigned long)d);
712 if (err)
713 return err;
714
715 if (__get_user(d32.request_size, &d->request_size)
716 || __get_user(d32.granted_count, &d->granted_count)
717 || __put_user(d32.request_size, &argp->request_size)
718 || __put_user(d32.granted_count, &argp->granted_count))
719 return -EFAULT;
720
721 return 0;
722 }
723
724 #if __OS_HAS_AGP
725 typedef struct drm_agp_mode32 {
726 u32 mode; /**< AGP mode */
727 } drm_agp_mode32_t;
728
729 static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
730 unsigned long arg)
731 {
732 drm_agp_mode32_t __user *argp = (void __user *)arg;
733 drm_agp_mode32_t m32;
734 struct drm_agp_mode __user *mode;
735
736 if (get_user(m32.mode, &argp->mode))
737 return -EFAULT;
738
739 mode = compat_alloc_user_space(sizeof(*mode));
740 if (put_user(m32.mode, &mode->mode))
741 return -EFAULT;
742
743 return drm_ioctl(file, DRM_IOCTL_AGP_ENABLE, (unsigned long)mode);
744 }
745
746 typedef struct drm_agp_info32 {
747 int agp_version_major;
748 int agp_version_minor;
749 u32 mode;
750 u32 aperture_base; /* physical address */
751 u32 aperture_size; /* bytes */
752 u32 memory_allowed; /* bytes */
753 u32 memory_used;
754
755 /* PCI information */
756 unsigned short id_vendor;
757 unsigned short id_device;
758 } drm_agp_info32_t;
759
760 static int compat_drm_agp_info(struct file *file, unsigned int cmd,
761 unsigned long arg)
762 {
763 drm_agp_info32_t __user *argp = (void __user *)arg;
764 drm_agp_info32_t i32;
765 struct drm_agp_info __user *info;
766 int err;
767
768 info = compat_alloc_user_space(sizeof(*info));
769 if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
770 return -EFAULT;
771
772 err = drm_ioctl(file, DRM_IOCTL_AGP_INFO, (unsigned long)info);
773 if (err)
774 return err;
775
776 if (__get_user(i32.agp_version_major, &info->agp_version_major)
777 || __get_user(i32.agp_version_minor, &info->agp_version_minor)
778 || __get_user(i32.mode, &info->mode)
779 || __get_user(i32.aperture_base, &info->aperture_base)
780 || __get_user(i32.aperture_size, &info->aperture_size)
781 || __get_user(i32.memory_allowed, &info->memory_allowed)
782 || __get_user(i32.memory_used, &info->memory_used)
783 || __get_user(i32.id_vendor, &info->id_vendor)
784 || __get_user(i32.id_device, &info->id_device))
785 return -EFAULT;
786
787 if (copy_to_user(argp, &i32, sizeof(i32)))
788 return -EFAULT;
789
790 return 0;
791 }
792
793 typedef struct drm_agp_buffer32 {
794 u32 size; /**< In bytes -- will round to page boundary */
795 u32 handle; /**< Used for binding / unbinding */
796 u32 type; /**< Type of memory to allocate */
797 u32 physical; /**< Physical used by i810 */
798 } drm_agp_buffer32_t;
799
800 static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
801 unsigned long arg)
802 {
803 drm_agp_buffer32_t __user *argp = (void __user *)arg;
804 drm_agp_buffer32_t req32;
805 struct drm_agp_buffer __user *request;
806 int err;
807
808 if (copy_from_user(&req32, argp, sizeof(req32)))
809 return -EFAULT;
810
811 request = compat_alloc_user_space(sizeof(*request));
812 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
813 || __put_user(req32.size, &request->size)
814 || __put_user(req32.type, &request->type))
815 return -EFAULT;
816
817 err = drm_ioctl(file, DRM_IOCTL_AGP_ALLOC, (unsigned long)request);
818 if (err)
819 return err;
820
821 if (__get_user(req32.handle, &request->handle)
822 || __get_user(req32.physical, &request->physical)
823 || copy_to_user(argp, &req32, sizeof(req32))) {
824 drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
825 return -EFAULT;
826 }
827
828 return 0;
829 }
830
831 static int compat_drm_agp_free(struct file *file, unsigned int cmd,
832 unsigned long arg)
833 {
834 drm_agp_buffer32_t __user *argp = (void __user *)arg;
835 struct drm_agp_buffer __user *request;
836 u32 handle;
837
838 request = compat_alloc_user_space(sizeof(*request));
839 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
840 || get_user(handle, &argp->handle)
841 || __put_user(handle, &request->handle))
842 return -EFAULT;
843
844 return drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
845 }
846
847 typedef struct drm_agp_binding32 {
848 u32 handle; /**< From drm_agp_buffer */
849 u32 offset; /**< In bytes -- will round to page boundary */
850 } drm_agp_binding32_t;
851
852 static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
853 unsigned long arg)
854 {
855 drm_agp_binding32_t __user *argp = (void __user *)arg;
856 drm_agp_binding32_t req32;
857 struct drm_agp_binding __user *request;
858
859 if (copy_from_user(&req32, argp, sizeof(req32)))
860 return -EFAULT;
861
862 request = compat_alloc_user_space(sizeof(*request));
863 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
864 || __put_user(req32.handle, &request->handle)
865 || __put_user(req32.offset, &request->offset))
866 return -EFAULT;
867
868 return drm_ioctl(file, DRM_IOCTL_AGP_BIND, (unsigned long)request);
869 }
870
871 static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
872 unsigned long arg)
873 {
874 drm_agp_binding32_t __user *argp = (void __user *)arg;
875 struct drm_agp_binding __user *request;
876 u32 handle;
877
878 request = compat_alloc_user_space(sizeof(*request));
879 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
880 || get_user(handle, &argp->handle)
881 || __put_user(handle, &request->handle))
882 return -EFAULT;
883
884 return drm_ioctl(file, DRM_IOCTL_AGP_UNBIND, (unsigned long)request);
885 }
886 #endif /* __OS_HAS_AGP */
887
888 typedef struct drm_scatter_gather32 {
889 u32 size; /**< In bytes -- will round to page boundary */
890 u32 handle; /**< Used for mapping / unmapping */
891 } drm_scatter_gather32_t;
892
893 static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
894 unsigned long arg)
895 {
896 drm_scatter_gather32_t __user *argp = (void __user *)arg;
897 struct drm_scatter_gather __user *request;
898 int err;
899 unsigned long x;
900
901 request = compat_alloc_user_space(sizeof(*request));
902 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
903 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
904 || __get_user(x, &argp->size)
905 || __put_user(x, &request->size))
906 return -EFAULT;
907
908 err = drm_ioctl(file, DRM_IOCTL_SG_ALLOC, (unsigned long)request);
909 if (err)
910 return err;
911
912 /* XXX not sure about the handle conversion here... */
913 if (__get_user(x, &request->handle)
914 || __put_user(x >> PAGE_SHIFT, &argp->handle))
915 return -EFAULT;
916
917 return 0;
918 }
919
920 static int compat_drm_sg_free(struct file *file, unsigned int cmd,
921 unsigned long arg)
922 {
923 drm_scatter_gather32_t __user *argp = (void __user *)arg;
924 struct drm_scatter_gather __user *request;
925 unsigned long x;
926
927 request = compat_alloc_user_space(sizeof(*request));
928 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
929 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
930 || __get_user(x, &argp->handle)
931 || __put_user(x << PAGE_SHIFT, &request->handle))
932 return -EFAULT;
933
934 return drm_ioctl(file, DRM_IOCTL_SG_FREE, (unsigned long)request);
935 }
936
937 #if defined(CONFIG_X86) || defined(CONFIG_IA64)
938 typedef struct drm_update_draw32 {
939 drm_drawable_t handle;
940 unsigned int type;
941 unsigned int num;
942 /* 64-bit version has a 32-bit pad here */
943 u64 data; /**< Pointer */
944 } __attribute__((packed)) drm_update_draw32_t;
945
946 static int compat_drm_update_draw(struct file *file, unsigned int cmd,
947 unsigned long arg)
948 {
949 drm_update_draw32_t update32;
950 struct drm_update_draw __user *request;
951 int err;
952
953 if (copy_from_user(&update32, (void __user *)arg, sizeof(update32)))
954 return -EFAULT;
955
956 request = compat_alloc_user_space(sizeof(*request));
957 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) ||
958 __put_user(update32.handle, &request->handle) ||
959 __put_user(update32.type, &request->type) ||
960 __put_user(update32.num, &request->num) ||
961 __put_user(update32.data, &request->data))
962 return -EFAULT;
963
964 err = drm_ioctl(file, DRM_IOCTL_UPDATE_DRAW, (unsigned long)request);
965 return err;
966 }
967 #endif
968
969 struct drm_wait_vblank_request32 {
970 enum drm_vblank_seq_type type;
971 unsigned int sequence;
972 u32 signal;
973 };
974
975 struct drm_wait_vblank_reply32 {
976 enum drm_vblank_seq_type type;
977 unsigned int sequence;
978 s32 tval_sec;
979 s32 tval_usec;
980 };
981
982 typedef union drm_wait_vblank32 {
983 struct drm_wait_vblank_request32 request;
984 struct drm_wait_vblank_reply32 reply;
985 } drm_wait_vblank32_t;
986
987 static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
988 unsigned long arg)
989 {
990 drm_wait_vblank32_t __user *argp = (void __user *)arg;
991 drm_wait_vblank32_t req32;
992 union drm_wait_vblank __user *request;
993 int err;
994
995 if (copy_from_user(&req32, argp, sizeof(req32)))
996 return -EFAULT;
997
998 request = compat_alloc_user_space(sizeof(*request));
999 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
1000 || __put_user(req32.request.type, &request->request.type)
1001 || __put_user(req32.request.sequence, &request->request.sequence)
1002 || __put_user(req32.request.signal, &request->request.signal))
1003 return -EFAULT;
1004
1005 err = drm_ioctl(file, DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
1006 if (err)
1007 return err;
1008
1009 if (__get_user(req32.reply.type, &request->reply.type)
1010 || __get_user(req32.reply.sequence, &request->reply.sequence)
1011 || __get_user(req32.reply.tval_sec, &request->reply.tval_sec)
1012 || __get_user(req32.reply.tval_usec, &request->reply.tval_usec))
1013 return -EFAULT;
1014
1015 if (copy_to_user(argp, &req32, sizeof(req32)))
1016 return -EFAULT;
1017
1018 return 0;
1019 }
1020
1021 typedef struct drm_mode_fb_cmd232 {
1022 u32 fb_id;
1023 u32 width;
1024 u32 height;
1025 u32 pixel_format;
1026 u32 flags;
1027 u32 handles[4];
1028 u32 pitches[4];
1029 u32 offsets[4];
1030 u64 modifier[4];
1031 } __attribute__((packed)) drm_mode_fb_cmd232_t;
1032
1033 static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd,
1034 unsigned long arg)
1035 {
1036 struct drm_mode_fb_cmd232 __user *argp = (void __user *)arg;
1037 struct drm_mode_fb_cmd232 req32;
1038 struct drm_mode_fb_cmd2 __user *req64;
1039 int i;
1040 int err;
1041
1042 if (copy_from_user(&req32, argp, sizeof(req32)))
1043 return -EFAULT;
1044
1045 req64 = compat_alloc_user_space(sizeof(*req64));
1046
1047 if (!access_ok(VERIFY_WRITE, req64, sizeof(*req64))
1048 || __put_user(req32.width, &req64->width)
1049 || __put_user(req32.height, &req64->height)
1050 || __put_user(req32.pixel_format, &req64->pixel_format)
1051 || __put_user(req32.flags, &req64->flags))
1052 return -EFAULT;
1053
1054 for (i = 0; i < 4; i++) {
1055 if (__put_user(req32.handles[i], &req64->handles[i]))
1056 return -EFAULT;
1057 if (__put_user(req32.pitches[i], &req64->pitches[i]))
1058 return -EFAULT;
1059 if (__put_user(req32.offsets[i], &req64->offsets[i]))
1060 return -EFAULT;
1061 if (__put_user(req32.modifier[i], &req64->modifier[i]))
1062 return -EFAULT;
1063 }
1064
1065 err = drm_ioctl(file, DRM_IOCTL_MODE_ADDFB2, (unsigned long)req64);
1066 if (err)
1067 return err;
1068
1069 if (__get_user(req32.fb_id, &req64->fb_id))
1070 return -EFAULT;
1071
1072 if (copy_to_user(argp, &req32, sizeof(req32)))
1073 return -EFAULT;
1074
1075 return 0;
1076 }
1077
1078 static drm_ioctl_compat_t *drm_compat_ioctls[] = {
1079 [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
1080 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
1081 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap,
1082 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient,
1083 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats,
1084 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique,
1085 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap,
1086 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs,
1087 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs,
1088 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs,
1089 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs,
1090 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs,
1091 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap,
1092 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx,
1093 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx,
1094 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx,
1095 [DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma,
1096 #if __OS_HAS_AGP
1097 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable,
1098 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info,
1099 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc,
1100 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free,
1101 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind,
1102 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind,
1103 #endif
1104 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc,
1105 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free,
1106 #if defined(CONFIG_X86) || defined(CONFIG_IA64)
1107 [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw,
1108 #endif
1109 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
1110 [DRM_IOCTL_NR(DRM_IOCTL_MODE_ADDFB232)] = compat_drm_mode_addfb2,
1111 };
1112
1113 /**
1114 * Called whenever a 32-bit process running under a 64-bit kernel
1115 * performs an ioctl on /dev/drm.
1116 *
1117 * \param file_priv DRM file private.
1118 * \param cmd command.
1119 * \param arg user argument.
1120 * \return zero on success or negative number on failure.
1121 */
1122 long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1123 {
1124 unsigned int nr = DRM_IOCTL_NR(cmd);
1125 drm_ioctl_compat_t *fn;
1126 int ret;
1127
1128 /* Assume that ioctls without an explicit compat routine will just
1129 * work. This may not always be a good assumption, but it's better
1130 * than always failing.
1131 */
1132 if (nr >= ARRAY_SIZE(drm_compat_ioctls))
1133 return drm_ioctl(filp, cmd, arg);
1134
1135 fn = drm_compat_ioctls[nr];
1136
1137 if (fn != NULL)
1138 ret = (*fn) (filp, cmd, arg);
1139 else
1140 ret = drm_ioctl(filp, cmd, arg);
1141
1142 return ret;
1143 }
1144
1145 EXPORT_SYMBOL(drm_compat_ioctl);
Linux with added FPC-III support