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drm/i915: export error state ref handling
[deliverable/linux.git] / drivers / gpu / drm / drm_ioc32.c
CommitLineData
9a186645
DA		 1/**
2 * \file drm_ioc32.c
3 *
4 * 32-bit ioctl compatibility routines for the DRM.
5 *
6 * \author Paul Mackerras <paulus@samba.org>
7 *
8 * Copyright (C) Paul Mackerras 2005.
9 * All Rights Reserved.
10 *
11 * Permission is hereby granted, free of charge, to any person obtaining a
12 * copy of this software and associated documentation files (the "Software"),
13 * to deal in the Software without restriction, including without limitation
14 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15 * and/or sell copies of the Software, and to permit persons to whom the
16 * Software is furnished to do so, subject to the following conditions:
17 *
18 * The above copyright notice and this permission notice (including the next
19 * paragraph) shall be included in all copies or substantial portions of the
20 * Software.
21 *
22 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
23 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
24 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
25 * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
26 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
27 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
28 * IN THE SOFTWARE.
29 */
30#include <linux/compat.h>
cafe8d84 31#include <linux/ratelimit.h>
2d1a8a48 32#include <linux/export.h>
9a186645 33
760285e7
DH		 34#include <drm/drmP.h>
35#include <drm/drm_core.h>
9a186645
DA		 36
37#define DRM_IOCTL_VERSION32 DRM_IOWR(0x00, drm_version32_t)
38#define DRM_IOCTL_GET_UNIQUE32 DRM_IOWR(0x01, drm_unique32_t)
39#define DRM_IOCTL_GET_MAP32 DRM_IOWR(0x04, drm_map32_t)
40#define DRM_IOCTL_GET_CLIENT32 DRM_IOWR(0x05, drm_client32_t)
41#define DRM_IOCTL_GET_STATS32 DRM_IOR( 0x06, drm_stats32_t)
42
43#define DRM_IOCTL_SET_UNIQUE32 DRM_IOW( 0x10, drm_unique32_t)
44#define DRM_IOCTL_ADD_MAP32 DRM_IOWR(0x15, drm_map32_t)
45#define DRM_IOCTL_ADD_BUFS32 DRM_IOWR(0x16, drm_buf_desc32_t)
46#define DRM_IOCTL_MARK_BUFS32 DRM_IOW( 0x17, drm_buf_desc32_t)
47#define DRM_IOCTL_INFO_BUFS32 DRM_IOWR(0x18, drm_buf_info32_t)
48#define DRM_IOCTL_MAP_BUFS32 DRM_IOWR(0x19, drm_buf_map32_t)
49#define DRM_IOCTL_FREE_BUFS32 DRM_IOW( 0x1a, drm_buf_free32_t)
50
51#define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t)
52
53#define DRM_IOCTL_SET_SAREA_CTX32 DRM_IOW( 0x1c, drm_ctx_priv_map32_t)
54#define DRM_IOCTL_GET_SAREA_CTX32 DRM_IOWR(0x1d, drm_ctx_priv_map32_t)
55
56#define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t)
57#define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t)
58
59#define DRM_IOCTL_AGP_ENABLE32 DRM_IOW( 0x32, drm_agp_mode32_t)
60#define DRM_IOCTL_AGP_INFO32 DRM_IOR( 0x33, drm_agp_info32_t)
61#define DRM_IOCTL_AGP_ALLOC32 DRM_IOWR(0x34, drm_agp_buffer32_t)
62#define DRM_IOCTL_AGP_FREE32 DRM_IOW( 0x35, drm_agp_buffer32_t)
63#define DRM_IOCTL_AGP_BIND32 DRM_IOW( 0x36, drm_agp_binding32_t)
64#define DRM_IOCTL_AGP_UNBIND32 DRM_IOW( 0x37, drm_agp_binding32_t)
65
66#define DRM_IOCTL_SG_ALLOC32 DRM_IOW( 0x38, drm_scatter_gather32_t)
67#define DRM_IOCTL_SG_FREE32 DRM_IOW( 0x39, drm_scatter_gather32_t)
68
49568873
EA		 69#define DRM_IOCTL_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t)
70
9a186645
DA		 71#define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
72
73typedef struct drm_version_32 {
b5e89ed5
DA		 74 int version_major; /**< Major version */
75 int version_minor; /**< Minor version */
76 int version_patchlevel; /**< Patch level */
77 u32 name_len; /**< Length of name buffer */
78 u32 name; /**< Name of driver */
79 u32 date_len; /**< Length of date buffer */
80 u32 date; /**< User-space buffer to hold date */
81 u32 desc_len; /**< Length of desc buffer */
82 u32 desc; /**< User-space buffer to hold desc */
9a186645
DA		 83} drm_version32_t;
84
85static int compat_drm_version(struct file *file, unsigned int cmd,
86 unsigned long arg)
87{
88 drm_version32_t v32;
ff4135ae 89 struct drm_version __user *version;
9a186645
DA		 90 int err;
91
b5e89ed5 92 if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
9a186645
DA		 93 return -EFAULT;
94
95 version = compat_alloc_user_space(sizeof(*version));
96 if (!access_ok(VERIFY_WRITE, version, sizeof(*version)))
97 return -EFAULT;
98 if (__put_user(v32.name_len, &version->name_len)
99 || __put_user((void __user *)(unsigned long)v32.name,
100 &version->name)
101 || __put_user(v32.date_len, &version->date_len)
102 || __put_user((void __user *)(unsigned long)v32.date,
103 &version->date)
104 || __put_user(v32.desc_len, &version->desc_len)
105 || __put_user((void __user *)(unsigned long)v32.desc,
106 &version->desc))
107 return -EFAULT;
108
ed8b6704 109 err = drm_ioctl(file,
b5e89ed5 110 DRM_IOCTL_VERSION, (unsigned long)version);
9a186645
DA		 111 if (err)
112 return err;
113
114 if (__get_user(v32.version_major, &version->version_major)
115 || __get_user(v32.version_minor, &version->version_minor)
116 || __get_user(v32.version_patchlevel, &version->version_patchlevel)
117 || __get_user(v32.name_len, &version->name_len)
118 || __get_user(v32.date_len, &version->date_len)
119 || __get_user(v32.desc_len, &version->desc_len))
120 return -EFAULT;
121
b5e89ed5 122 if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
9a186645
DA		 123 return -EFAULT;
124 return 0;
125}
126
127typedef struct drm_unique32 {
128 u32 unique_len; /**< Length of unique */
129 u32 unique; /**< Unique name for driver instantiation */
130} drm_unique32_t;
131
132static int compat_drm_getunique(struct file *file, unsigned int cmd,
133 unsigned long arg)
134{
135 drm_unique32_t uq32;
ff4135ae 136 struct drm_unique __user *u;
9a186645
DA		 137 int err;
138
b5e89ed5 139 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
9a186645
DA		 140 return -EFAULT;
141
142 u = compat_alloc_user_space(sizeof(*u));
143 if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
144 return -EFAULT;
145 if (__put_user(uq32.unique_len, &u->unique_len)
b5e89ed5 146 || __put_user((void __user *)(unsigned long)uq32.unique,
9a186645
DA		 147 &u->unique))
148 return -EFAULT;
149
ed8b6704 150 err = drm_ioctl(file, DRM_IOCTL_GET_UNIQUE, (unsigned long)u);
9a186645
DA		 151 if (err)
152 return err;
153
154 if (__get_user(uq32.unique_len, &u->unique_len))
155 return -EFAULT;
b5e89ed5 156 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
9a186645
DA		 157 return -EFAULT;
158 return 0;
159}
160
161static int compat_drm_setunique(struct file *file, unsigned int cmd,
162 unsigned long arg)
163{
164 drm_unique32_t uq32;
ff4135ae 165 struct drm_unique __user *u;
9a186645 166
b5e89ed5 167 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
9a186645
DA		 168 return -EFAULT;
169
170 u = compat_alloc_user_space(sizeof(*u));
171 if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
172 return -EFAULT;
173 if (__put_user(uq32.unique_len, &u->unique_len)
b5e89ed5 174 || __put_user((void __user *)(unsigned long)uq32.unique,
9a186645
DA		 175 &u->unique))
176 return -EFAULT;
177
ed8b6704 178 return drm_ioctl(file, DRM_IOCTL_SET_UNIQUE, (unsigned long)u);
9a186645
DA		 179}
180
181typedef struct drm_map32 {
b5e89ed5
DA		 182 u32 offset; /**< Requested physical address (0 for SAREA)*/
183 u32 size; /**< Requested physical size (bytes) */
ff4135ae
DA		 184 enum drm_map_type type; /**< Type of memory to map */
185 enum drm_map_flags flags; /**< Flags */
b5e89ed5
DA		 186 u32 handle; /**< User-space: "Handle" to pass to mmap() */
187 int mtrr; /**< MTRR slot used */
9a186645
DA		 188} drm_map32_t;
189
190static int compat_drm_getmap(struct file *file, unsigned int cmd,
191 unsigned long arg)
192{
193 drm_map32_t __user *argp = (void __user *)arg;
194 drm_map32_t m32;
ff4135ae 195 struct drm_map __user *map;
9a186645
DA		 196 int idx, err;
197 void *handle;
198
199 if (get_user(idx, &argp->offset))
200 return -EFAULT;
201
202 map = compat_alloc_user_space(sizeof(*map));
203 if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
204 return -EFAULT;
205 if (__put_user(idx, &map->offset))
206 return -EFAULT;
207
ed8b6704 208 err = drm_ioctl(file, DRM_IOCTL_GET_MAP, (unsigned long)map);
9a186645
DA		 209 if (err)
210 return err;
211
212 if (__get_user(m32.offset, &map->offset)
213 || __get_user(m32.size, &map->size)
214 || __get_user(m32.type, &map->type)
215 || __get_user(m32.flags, &map->flags)
216 || __get_user(handle, &map->handle)
217 || __get_user(m32.mtrr, &map->mtrr))
218 return -EFAULT;
219
b5e89ed5 220 m32.handle = (unsigned long)handle;
9a186645
DA		 221 if (copy_to_user(argp, &m32, sizeof(m32)))
222 return -EFAULT;
223 return 0;
224
225}
226
227static int compat_drm_addmap(struct file *file, unsigned int cmd,
228 unsigned long arg)
229{
230 drm_map32_t __user *argp = (void __user *)arg;
231 drm_map32_t m32;
ff4135ae 232 struct drm_map __user *map;
9a186645
DA		 233 int err;
234 void *handle;
235
236 if (copy_from_user(&m32, argp, sizeof(m32)))
237 return -EFAULT;
238
239 map = compat_alloc_user_space(sizeof(*map));
240 if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
241 return -EFAULT;
242 if (__put_user(m32.offset, &map->offset)
243 || __put_user(m32.size, &map->size)
244 || __put_user(m32.type, &map->type)
245 || __put_user(m32.flags, &map->flags))
246 return -EFAULT;
247
ed8b6704 248 err = drm_ioctl(file, DRM_IOCTL_ADD_MAP, (unsigned long)map);
9a186645
DA		 249 if (err)
250 return err;
251
252 if (__get_user(m32.offset, &map->offset)
253 || __get_user(m32.mtrr, &map->mtrr)
254 || __get_user(handle, &map->handle))
255 return -EFAULT;
256
b5e89ed5 257 m32.handle = (unsigned long)handle;
cafe8d84
CD		 258 if (m32.handle != (unsigned long)handle)
259 printk_ratelimited(KERN_ERR "compat_drm_addmap truncated handle"
260 " %p for type %d offset %x\n",
261 handle, m32.type, m32.offset);
9a186645
DA		 262
263 if (copy_to_user(argp, &m32, sizeof(m32)))
264 return -EFAULT;
265
266 return 0;
267}
268
269static int compat_drm_rmmap(struct file *file, unsigned int cmd,
270 unsigned long arg)
271{
272 drm_map32_t __user *argp = (void __user *)arg;
ff4135ae 273 struct drm_map __user *map;
9a186645
DA		 274 u32 handle;
275
276 if (get_user(handle, &argp->handle))
277 return -EFAULT;
278
279 map = compat_alloc_user_space(sizeof(*map));
280 if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
281 return -EFAULT;
b5e89ed5 282 if (__put_user((void *)(unsigned long)handle, &map->handle))
9a186645
DA		 283 return -EFAULT;
284
ed8b6704 285 return drm_ioctl(file, DRM_IOCTL_RM_MAP, (unsigned long)map);
9a186645
DA		 286}
287
288typedef struct drm_client32 {
b5e89ed5
DA		 289 int idx; /**< Which client desired? */
290 int auth; /**< Is client authenticated? */
291 u32 pid; /**< Process ID */
292 u32 uid; /**< User ID */
293 u32 magic; /**< Magic */
294 u32 iocs; /**< Ioctl count */
9a186645
DA		 295} drm_client32_t;
296
297static int compat_drm_getclient(struct file *file, unsigned int cmd,
298 unsigned long arg)
299{
300 drm_client32_t c32;
301 drm_client32_t __user *argp = (void __user *)arg;
ff4135ae 302 struct drm_client __user *client;
9a186645
DA		 303 int idx, err;
304
305 if (get_user(idx, &argp->idx))
306 return -EFAULT;
307
308 client = compat_alloc_user_space(sizeof(*client));
309 if (!access_ok(VERIFY_WRITE, client, sizeof(*client)))
310 return -EFAULT;
311 if (__put_user(idx, &client->idx))
312 return -EFAULT;
313
ed8b6704 314 err = drm_ioctl(file, DRM_IOCTL_GET_CLIENT, (unsigned long)client);
9a186645
DA		 315 if (err)
316 return err;
317
08bc3d4e
JL		 318 if (__get_user(c32.idx, &client->idx)
319 || __get_user(c32.auth, &client->auth)
9a186645
DA		 320 || __get_user(c32.pid, &client->pid)
321 || __get_user(c32.uid, &client->uid)
322 || __get_user(c32.magic, &client->magic)
323 || __get_user(c32.iocs, &client->iocs))
324 return -EFAULT;
325
326 if (copy_to_user(argp, &c32, sizeof(c32)))
327 return -EFAULT;
328 return 0;
329}
330
331typedef struct drm_stats32 {
332 u32 count;
333 struct {
334 u32 value;
ff4135ae 335 enum drm_stat_type type;
9a186645
DA		 336 } data[15];
337} drm_stats32_t;
338
339static int compat_drm_getstats(struct file *file, unsigned int cmd,
340 unsigned long arg)
341{
342 drm_stats32_t s32;
343 drm_stats32_t __user *argp = (void __user *)arg;
ff4135ae 344 struct drm_stats __user *stats;
9a186645
DA		 345 int i, err;
346
347 stats = compat_alloc_user_space(sizeof(*stats));
348 if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats)))
349 return -EFAULT;
350
ed8b6704 351 err = drm_ioctl(file, DRM_IOCTL_GET_STATS, (unsigned long)stats);
9a186645
DA		 352 if (err)
353 return err;
354
355 if (__get_user(s32.count, &stats->count))
356 return -EFAULT;
357 for (i = 0; i < 15; ++i)
358 if (__get_user(s32.data[i].value, &stats->data[i].value)
359 || __get_user(s32.data[i].type, &stats->data[i].type))
360 return -EFAULT;
361
362 if (copy_to_user(argp, &s32, sizeof(s32)))
363 return -EFAULT;
364 return 0;
365}
366
367typedef struct drm_buf_desc32 {
b5e89ed5
DA		 368 int count; /**< Number of buffers of this size */
369 int size; /**< Size in bytes */
370 int low_mark; /**< Low water mark */
371 int high_mark; /**< High water mark */
372 int flags;
373 u32 agp_start; /**< Start address in the AGP aperture */
9a186645
DA		 374} drm_buf_desc32_t;
375
376static int compat_drm_addbufs(struct file *file, unsigned int cmd,
377 unsigned long arg)
378{
379 drm_buf_desc32_t __user *argp = (void __user *)arg;
ff4135ae 380 struct drm_buf_desc __user *buf;
9a186645
DA		 381 int err;
382 unsigned long agp_start;
383
384 buf = compat_alloc_user_space(sizeof(*buf));
385 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))
386 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)))
387 return -EFAULT;
388
389 if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start))
390 || __get_user(agp_start, &argp->agp_start)
391 || __put_user(agp_start, &buf->agp_start))
392 return -EFAULT;
393
ed8b6704 394 err = drm_ioctl(file, DRM_IOCTL_ADD_BUFS, (unsigned long)buf);
9a186645
DA		 395 if (err)
396 return err;
397
398 if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start))
399 || __get_user(agp_start, &buf->agp_start)
400 || __put_user(agp_start, &argp->agp_start))
401 return -EFAULT;
402
403 return 0;
404}
405
406static int compat_drm_markbufs(struct file *file, unsigned int cmd,
407 unsigned long arg)
408{
409 drm_buf_desc32_t b32;
410 drm_buf_desc32_t __user *argp = (void __user *)arg;
ff4135ae 411 struct drm_buf_desc __user *buf;
9a186645
DA		 412
413 if (copy_from_user(&b32, argp, sizeof(b32)))
414 return -EFAULT;
415
416 buf = compat_alloc_user_space(sizeof(*buf));
417 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
418 return -EFAULT;
419
420 if (__put_user(b32.size, &buf->size)
421 || __put_user(b32.low_mark, &buf->low_mark)
422 || __put_user(b32.high_mark, &buf->high_mark))
423 return -EFAULT;
424
ed8b6704 425 return drm_ioctl(file, DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
9a186645
DA		 426}
427
428typedef struct drm_buf_info32 {
b5e89ed5
DA		 429 int count; /**< Entries in list */
430 u32 list;
9a186645
DA		 431} drm_buf_info32_t;
432
433static int compat_drm_infobufs(struct file *file, unsigned int cmd,
434 unsigned long arg)
435{
436 drm_buf_info32_t req32;
437 drm_buf_info32_t __user *argp = (void __user *)arg;
438 drm_buf_desc32_t __user *to;
ff4135ae
DA		 439 struct drm_buf_info __user *request;
440 struct drm_buf_desc __user *list;
9a186645
DA		 441 size_t nbytes;
442 int i, err;
443 int count, actual;
444
445 if (copy_from_user(&req32, argp, sizeof(req32)))
446 return -EFAULT;
447
448 count = req32.count;
b5e89ed5 449 to = (drm_buf_desc32_t __user *) (unsigned long)req32.list;
9a186645
DA		 450 if (count < 0)
451 count = 0;
452 if (count > 0
453 && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t)))
454 return -EFAULT;
455
ff4135ae 456 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_desc);
9a186645
DA		 457 request = compat_alloc_user_space(nbytes);
458 if (!access_ok(VERIFY_WRITE, request, nbytes))
459 return -EFAULT;
ff4135ae 460 list = (struct drm_buf_desc *) (request + 1);
9a186645
DA		 461
462 if (__put_user(count, &request->count)
463 || __put_user(list, &request->list))
464 return -EFAULT;
465
ed8b6704 466 err = drm_ioctl(file, DRM_IOCTL_INFO_BUFS, (unsigned long)request);
9a186645
DA		 467 if (err)
468 return err;
469
470 if (__get_user(actual, &request->count))
471 return -EFAULT;
472 if (count >= actual)
473 for (i = 0; i < actual; ++i)
474 if (__copy_in_user(&to[i], &list[i],
ff4135ae 475 offsetof(struct drm_buf_desc, flags)))
9a186645
DA		 476 return -EFAULT;
477
478 if (__put_user(actual, &argp->count))
479 return -EFAULT;
480
481 return 0;
482}
483
484typedef struct drm_buf_pub32 {
b5e89ed5
DA		 485 int idx; /**< Index into the master buffer list */
486 int total; /**< Buffer size */
487 int used; /**< Amount of buffer in use (for DMA) */
488 u32 address; /**< Address of buffer */
9a186645
DA		 489} drm_buf_pub32_t;
490
491typedef struct drm_buf_map32 {
b5e89ed5
DA		 492 int count; /**< Length of the buffer list */
493 u32 virtual; /**< Mmap'd area in user-virtual */
494 u32 list; /**< Buffer information */
9a186645
DA		 495} drm_buf_map32_t;
496
497static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
498 unsigned long arg)
499{
500 drm_buf_map32_t __user *argp = (void __user *)arg;
501 drm_buf_map32_t req32;
502 drm_buf_pub32_t __user *list32;
ff4135ae
DA		 503 struct drm_buf_map __user *request;
504 struct drm_buf_pub __user *list;
9a186645
DA		 505 int i, err;
506 int count, actual;
507 size_t nbytes;
508 void __user *addr;
509
510 if (copy_from_user(&req32, argp, sizeof(req32)))
511 return -EFAULT;
512 count = req32.count;
513 list32 = (void __user *)(unsigned long)req32.list;
514
515 if (count < 0)
516 return -EINVAL;
ff4135ae 517 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub);
9a186645
DA		 518 request = compat_alloc_user_space(nbytes);
519 if (!access_ok(VERIFY_WRITE, request, nbytes))
520 return -EFAULT;
ff4135ae 521 list = (struct drm_buf_pub *) (request + 1);
9a186645
DA		 522
523 if (__put_user(count, &request->count)
524 || __put_user(list, &request->list))
525 return -EFAULT;
526
ed8b6704 527 err = drm_ioctl(file, DRM_IOCTL_MAP_BUFS, (unsigned long)request);
9a186645
DA		 528 if (err)
529 return err;
530
531 if (__get_user(actual, &request->count))
532 return -EFAULT;
533 if (count >= actual)
534 for (i = 0; i < actual; ++i)
535 if (__copy_in_user(&list32[i], &list[i],
ff4135ae 536 offsetof(struct drm_buf_pub, address))
9a186645 537 || __get_user(addr, &list[i].address)
b5e89ed5 538 || __put_user((unsigned long)addr,
9a186645
DA		 539 &list32[i].address))
540 return -EFAULT;
541
542 if (__put_user(actual, &argp->count)
543 || __get_user(addr, &request->virtual)
b5e89ed5 544 || __put_user((unsigned long)addr, &argp->virtual))
9a186645
DA		 545 return -EFAULT;
546
547 return 0;
548}
549
550typedef struct drm_buf_free32 {
b5e89ed5
DA		 551 int count;
552 u32 list;
9a186645
DA		 553} drm_buf_free32_t;
554
555static int compat_drm_freebufs(struct file *file, unsigned int cmd,
556 unsigned long arg)
557{
558 drm_buf_free32_t req32;
ff4135ae 559 struct drm_buf_free __user *request;
9a186645
DA		 560 drm_buf_free32_t __user *argp = (void __user *)arg;
561
562 if (copy_from_user(&req32, argp, sizeof(req32)))
563 return -EFAULT;
564
565 request = compat_alloc_user_space(sizeof(*request));
566 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
567 return -EFAULT;
568 if (__put_user(req32.count, &request->count)
b5e89ed5 569 || __put_user((int __user *)(unsigned long)req32.list,
9a186645
DA		 570 &request->list))
571 return -EFAULT;
572
ed8b6704 573 return drm_ioctl(file, DRM_IOCTL_FREE_BUFS, (unsigned long)request);
9a186645
DA		 574}
575
576typedef struct drm_ctx_priv_map32 {
b5e89ed5
DA		 577 unsigned int ctx_id; /**< Context requesting private mapping */
578 u32 handle; /**< Handle of map */
9a186645
DA		 579} drm_ctx_priv_map32_t;
580
581static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
582 unsigned long arg)
583{
584 drm_ctx_priv_map32_t req32;
ff4135ae 585 struct drm_ctx_priv_map __user *request;
9a186645
DA		 586 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
587
588 if (copy_from_user(&req32, argp, sizeof(req32)))
589 return -EFAULT;
590
591 request = compat_alloc_user_space(sizeof(*request));
592 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
593 return -EFAULT;
594 if (__put_user(req32.ctx_id, &request->ctx_id)
b5e89ed5 595 || __put_user((void *)(unsigned long)req32.handle,
9a186645
DA		 596 &request->handle))
597 return -EFAULT;
598
ed8b6704 599 return drm_ioctl(file, DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
9a186645
DA		 600}
601
602static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
603 unsigned long arg)
604{
ff4135ae 605 struct drm_ctx_priv_map __user *request;
9a186645
DA		 606 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
607 int err;
608 unsigned int ctx_id;
609 void *handle;
610
611 if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp))
612 || __get_user(ctx_id, &argp->ctx_id))
613 return -EFAULT;
614
615 request = compat_alloc_user_space(sizeof(*request));
616 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
617 return -EFAULT;
618 if (__put_user(ctx_id, &request->ctx_id))
619 return -EFAULT;
620
ed8b6704 621 err = drm_ioctl(file, DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
9a186645
DA		 622 if (err)
623 return err;
624
625 if (__get_user(handle, &request->handle)
b5e89ed5 626 || __put_user((unsigned long)handle, &argp->handle))
9a186645
DA		 627 return -EFAULT;
628
629 return 0;
630}
631
632typedef struct drm_ctx_res32 {
b5e89ed5
DA		 633 int count;
634 u32 contexts;
9a186645
DA		 635} drm_ctx_res32_t;
636
637static int compat_drm_resctx(struct file *file, unsigned int cmd,
638 unsigned long arg)
639{
640 drm_ctx_res32_t __user *argp = (void __user *)arg;
641 drm_ctx_res32_t res32;
ff4135ae 642 struct drm_ctx_res __user *res;
9a186645
DA		 643 int err;
644
645 if (copy_from_user(&res32, argp, sizeof(res32)))
646 return -EFAULT;
647
648 res = compat_alloc_user_space(sizeof(*res));
649 if (!access_ok(VERIFY_WRITE, res, sizeof(*res)))
650 return -EFAULT;
651 if (__put_user(res32.count, &res->count)
ff4135ae 652 || __put_user((struct drm_ctx __user *) (unsigned long)res32.contexts,
9a186645
DA		 653 &res->contexts))
654 return -EFAULT;
655
ed8b6704 656 err = drm_ioctl(file, DRM_IOCTL_RES_CTX, (unsigned long)res);
9a186645
DA		 657 if (err)
658 return err;
659
660 if (__get_user(res32.count, &res->count)
661 || __put_user(res32.count, &argp->count))
662 return -EFAULT;
663
664 return 0;
665}
666
667typedef struct drm_dma32 {
b5e89ed5
DA		 668 int context; /**< Context handle */
669 int send_count; /**< Number of buffers to send */
670 u32 send_indices; /**< List of handles to buffers */
671 u32 send_sizes; /**< Lengths of data to send */
ff4135ae 672 enum drm_dma_flags flags; /**< Flags */
b5e89ed5
DA		 673 int request_count; /**< Number of buffers requested */
674 int request_size; /**< Desired size for buffers */
675 u32 request_indices; /**< Buffer information */
676 u32 request_sizes;
677 int granted_count; /**< Number of buffers granted */
9a186645
DA		 678} drm_dma32_t;
679
680static int compat_drm_dma(struct file *file, unsigned int cmd,
681 unsigned long arg)
682{
683 drm_dma32_t d32;
b5e89ed5 684 drm_dma32_t __user *argp = (void __user *)arg;
ff4135ae 685 struct drm_dma __user *d;
9a186645
DA		 686 int err;
687
688 if (copy_from_user(&d32, argp, sizeof(d32)))
689 return -EFAULT;
690
691 d = compat_alloc_user_space(sizeof(*d));
692 if (!access_ok(VERIFY_WRITE, d, sizeof(*d)))
693 return -EFAULT;
694
695 if (__put_user(d32.context, &d->context)
696 || __put_user(d32.send_count, &d->send_count)
b5e89ed5 697 || __put_user((int __user *)(unsigned long)d32.send_indices,
9a186645 698 &d->send_indices)
b5e89ed5 699 || __put_user((int __user *)(unsigned long)d32.send_sizes,
9a186645
DA		 700 &d->send_sizes)
701 || __put_user(d32.flags, &d->flags)
702 || __put_user(d32.request_count, &d->request_count)
b5e89ed5 703 || __put_user((int __user *)(unsigned long)d32.request_indices,
9a186645 704 &d->request_indices)
b5e89ed5 705 || __put_user((int __user *)(unsigned long)d32.request_sizes,
9a186645
DA		 706 &d->request_sizes))
707 return -EFAULT;
708
ed8b6704 709 err = drm_ioctl(file, DRM_IOCTL_DMA, (unsigned long)d);
9a186645
DA		 710 if (err)
711 return err;
712
713 if (__get_user(d32.request_size, &d->request_size)
714 || __get_user(d32.granted_count, &d->granted_count)
715 || __put_user(d32.request_size, &argp->request_size)
716 || __put_user(d32.granted_count, &argp->granted_count))
717 return -EFAULT;
718
719 return 0;
720}
721
722#if __OS_HAS_AGP
723typedef struct drm_agp_mode32 {
724 u32 mode; /**< AGP mode */
725} drm_agp_mode32_t;
726
727static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
728 unsigned long arg)
729{
730 drm_agp_mode32_t __user *argp = (void __user *)arg;
731 drm_agp_mode32_t m32;
ff4135ae 732 struct drm_agp_mode __user *mode;
9a186645
DA		 733
734 if (get_user(m32.mode, &argp->mode))
735 return -EFAULT;
736
737 mode = compat_alloc_user_space(sizeof(*mode));
738 if (put_user(m32.mode, &mode->mode))
739 return -EFAULT;
740
ed8b6704 741 return drm_ioctl(file, DRM_IOCTL_AGP_ENABLE, (unsigned long)mode);
9a186645
DA		 742}
743
744typedef struct drm_agp_info32 {
b5e89ed5
DA		 745 int agp_version_major;
746 int agp_version_minor;
747 u32 mode;
748 u32 aperture_base; /* physical address */
749 u32 aperture_size; /* bytes */
750 u32 memory_allowed; /* bytes */
751 u32 memory_used;
752
753 /* PCI information */
9a186645
DA		 754 unsigned short id_vendor;
755 unsigned short id_device;
756} drm_agp_info32_t;
757
758static int compat_drm_agp_info(struct file *file, unsigned int cmd,
759 unsigned long arg)
760{
761 drm_agp_info32_t __user *argp = (void __user *)arg;
762 drm_agp_info32_t i32;
ff4135ae 763 struct drm_agp_info __user *info;
9a186645
DA		 764 int err;
765
766 info = compat_alloc_user_space(sizeof(*info));
767 if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
768 return -EFAULT;
769
ed8b6704 770 err = drm_ioctl(file, DRM_IOCTL_AGP_INFO, (unsigned long)info);
9a186645
DA		 771 if (err)
772 return err;
773
774 if (__get_user(i32.agp_version_major, &info->agp_version_major)
775 || __get_user(i32.agp_version_minor, &info->agp_version_minor)
776 || __get_user(i32.mode, &info->mode)
777 || __get_user(i32.aperture_base, &info->aperture_base)
778 || __get_user(i32.aperture_size, &info->aperture_size)
779 || __get_user(i32.memory_allowed, &info->memory_allowed)
780 || __get_user(i32.memory_used, &info->memory_used)
781 || __get_user(i32.id_vendor, &info->id_vendor)
782 || __get_user(i32.id_device, &info->id_device))
783 return -EFAULT;
784
785 if (copy_to_user(argp, &i32, sizeof(i32)))
786 return -EFAULT;
787
788 return 0;
789}
790
791typedef struct drm_agp_buffer32 {
792 u32 size; /**< In bytes -- will round to page boundary */
793 u32 handle; /**< Used for binding / unbinding */
794 u32 type; /**< Type of memory to allocate */
b5e89ed5 795 u32 physical; /**< Physical used by i810 */
9a186645
DA		 796} drm_agp_buffer32_t;
797
798static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
799 unsigned long arg)
800{
801 drm_agp_buffer32_t __user *argp = (void __user *)arg;
802 drm_agp_buffer32_t req32;
ff4135ae 803 struct drm_agp_buffer __user *request;
9a186645
DA		 804 int err;
805
806 if (copy_from_user(&req32, argp, sizeof(req32)))
807 return -EFAULT;
808
809 request = compat_alloc_user_space(sizeof(*request));
810 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
811 || __put_user(req32.size, &request->size)
812 || __put_user(req32.type, &request->type))
813 return -EFAULT;
814
ed8b6704 815 err = drm_ioctl(file, DRM_IOCTL_AGP_ALLOC, (unsigned long)request);
9a186645
DA		 816 if (err)
817 return err;
818
819 if (__get_user(req32.handle, &request->handle)
820 || __get_user(req32.physical, &request->physical)
821 || copy_to_user(argp, &req32, sizeof(req32))) {
ed8b6704 822 drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
9a186645
DA		 823 return -EFAULT;
824 }
825
826 return 0;
827}
828
829static int compat_drm_agp_free(struct file *file, unsigned int cmd,
830 unsigned long arg)
831{
832 drm_agp_buffer32_t __user *argp = (void __user *)arg;
ff4135ae 833 struct drm_agp_buffer __user *request;
9a186645
DA		 834 u32 handle;
835
836 request = compat_alloc_user_space(sizeof(*request));
837 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
838 || get_user(handle, &argp->handle)
839 || __put_user(handle, &request->handle))
840 return -EFAULT;
841
ed8b6704 842 return drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
9a186645
DA		 843}
844
845typedef struct drm_agp_binding32 {
846 u32 handle; /**< From drm_agp_buffer */
847 u32 offset; /**< In bytes -- will round to page boundary */
848} drm_agp_binding32_t;
849
850static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
851 unsigned long arg)
852{
853 drm_agp_binding32_t __user *argp = (void __user *)arg;
854 drm_agp_binding32_t req32;
ff4135ae 855 struct drm_agp_binding __user *request;
9a186645
DA		 856
857 if (copy_from_user(&req32, argp, sizeof(req32)))
858 return -EFAULT;
859
860 request = compat_alloc_user_space(sizeof(*request));
861 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
862 || __put_user(req32.handle, &request->handle)
863 || __put_user(req32.offset, &request->offset))
864 return -EFAULT;
865
ed8b6704 866 return drm_ioctl(file, DRM_IOCTL_AGP_BIND, (unsigned long)request);
9a186645
DA		 867}
868
869static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
870 unsigned long arg)
871{
872 drm_agp_binding32_t __user *argp = (void __user *)arg;
ff4135ae 873 struct drm_agp_binding __user *request;
9a186645
DA		 874 u32 handle;
875
876 request = compat_alloc_user_space(sizeof(*request));
877 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
878 || get_user(handle, &argp->handle)
879 || __put_user(handle, &request->handle))
880 return -EFAULT;
881
ed8b6704 882 return drm_ioctl(file, DRM_IOCTL_AGP_UNBIND, (unsigned long)request);
9a186645 883}
b5e89ed5 884#endif /* __OS_HAS_AGP */
9a186645
DA		 885
886typedef struct drm_scatter_gather32 {
887 u32 size; /**< In bytes -- will round to page boundary */
888 u32 handle; /**< Used for mapping / unmapping */
889} drm_scatter_gather32_t;
890
891static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
892 unsigned long arg)
893{
894 drm_scatter_gather32_t __user *argp = (void __user *)arg;
ff4135ae 895 struct drm_scatter_gather __user *request;
9a186645
DA		 896 int err;
897 unsigned long x;
898
899 request = compat_alloc_user_space(sizeof(*request));
900 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
901 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
902 || __get_user(x, &argp->size)
903 || __put_user(x, &request->size))
904 return -EFAULT;
905
ed8b6704 906 err = drm_ioctl(file, DRM_IOCTL_SG_ALLOC, (unsigned long)request);
9a186645
DA		 907 if (err)
908 return err;
909
910 /* XXX not sure about the handle conversion here... */
911 if (__get_user(x, &request->handle)
912 || __put_user(x >> PAGE_SHIFT, &argp->handle))
913 return -EFAULT;
914
915 return 0;
916}
917
918static int compat_drm_sg_free(struct file *file, unsigned int cmd,
919 unsigned long arg)
920{
921 drm_scatter_gather32_t __user *argp = (void __user *)arg;
ff4135ae 922 struct drm_scatter_gather __user *request;
9a186645
DA		 923 unsigned long x;
924
925 request = compat_alloc_user_space(sizeof(*request));
926 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
927 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
928 || __get_user(x, &argp->handle)
929 || __put_user(x << PAGE_SHIFT, &request->handle))
930 return -EFAULT;
931
ed8b6704 932 return drm_ioctl(file, DRM_IOCTL_SG_FREE, (unsigned long)request);
9a186645
DA		 933}
934
09e40d65 935#if defined(CONFIG_X86) || defined(CONFIG_IA64)
49568873
EA		 936typedef struct drm_update_draw32 {
937 drm_drawable_t handle;
938 unsigned int type;
939 unsigned int num;
940 /* 64-bit version has a 32-bit pad here */
941 u64 data; /**< Pointer */
942} __attribute__((packed)) drm_update_draw32_t;
943
944static int compat_drm_update_draw(struct file *file, unsigned int cmd,
945 unsigned long arg)
946{
947 drm_update_draw32_t update32;
948 struct drm_update_draw __user *request;
949 int err;
950
951 if (copy_from_user(&update32, (void __user *)arg, sizeof(update32)))
952 return -EFAULT;
953
954 request = compat_alloc_user_space(sizeof(*request));
955 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) ||
956 __put_user(update32.handle, &request->handle) ||
957 __put_user(update32.type, &request->type) ||
958 __put_user(update32.num, &request->num) ||
959 __put_user(update32.data, &request->data))
960 return -EFAULT;
961
ed8b6704 962 err = drm_ioctl(file, DRM_IOCTL_UPDATE_DRAW, (unsigned long)request);
49568873
EA		 963 return err;
964}
09e40d65 965#endif
49568873 966
9a186645 967struct drm_wait_vblank_request32 {
ff4135ae 968 enum drm_vblank_seq_type type;
9a186645
DA		 969 unsigned int sequence;
970 u32 signal;
971};
972
973struct drm_wait_vblank_reply32 {
ff4135ae 974 enum drm_vblank_seq_type type;
9a186645
DA		 975 unsigned int sequence;
976 s32 tval_sec;
977 s32 tval_usec;
978};
979
980typedef union drm_wait_vblank32 {
981 struct drm_wait_vblank_request32 request;
982 struct drm_wait_vblank_reply32 reply;
983} drm_wait_vblank32_t;
984
985static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
986 unsigned long arg)
987{
988 drm_wait_vblank32_t __user *argp = (void __user *)arg;
989 drm_wait_vblank32_t req32;
ff4135ae 990 union drm_wait_vblank __user *request;
9a186645
DA		 991 int err;
992
993 if (copy_from_user(&req32, argp, sizeof(req32)))
994 return -EFAULT;
995
996 request = compat_alloc_user_space(sizeof(*request));
997 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
998 || __put_user(req32.request.type, &request->request.type)
999 || __put_user(req32.request.sequence, &request->request.sequence)
1000 || __put_user(req32.request.signal, &request->request.signal))
1001 return -EFAULT;
1002
ed8b6704 1003 err = drm_ioctl(file, DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
9a186645
DA		 1004 if (err)
1005 return err;
1006
1007 if (__get_user(req32.reply.type, &request->reply.type)
1008 || __get_user(req32.reply.sequence, &request->reply.sequence)
1009 || __get_user(req32.reply.tval_sec, &request->reply.tval_sec)
1010 || __get_user(req32.reply.tval_usec, &request->reply.tval_usec))
1011 return -EFAULT;
1012
1013 if (copy_to_user(argp, &req32, sizeof(req32)))
1014 return -EFAULT;
1015
1016 return 0;
1017}
1018
1019drm_ioctl_compat_t *drm_compat_ioctls[] = {
1020 [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
1021 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
1022 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap,
1023 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient,
1024 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats,
1025 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique,
1026 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap,
1027 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs,
1028 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs,
1029 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs,
1030 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs,
1031 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs,
1032 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap,
1033 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx,
1034 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx,
1035 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx,
1036 [DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma,
1037#if __OS_HAS_AGP
1038 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable,
1039 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info,
1040 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc,
1041 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free,
1042 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind,
1043 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind,
1044#endif
1045 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc,
1046 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free,
09e40d65 1047#if defined(CONFIG_X86) || defined(CONFIG_IA64)
49568873 1048 [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw,
09e40d65 1049#endif
9a186645
DA		 1050 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
1051};
1052
1053/**
1054 * Called whenever a 32-bit process running under a 64-bit kernel
1055 * performs an ioctl on /dev/drm.
1056 *
6c340eac 1057 * \param file_priv DRM file private.
9a186645
DA		 1058 * \param cmd command.
1059 * \param arg user argument.
1060 * \return zero on success or negative number on failure.
1061 */
1062long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1063{
1064 unsigned int nr = DRM_IOCTL_NR(cmd);
1065 drm_ioctl_compat_t *fn;
1066 int ret;
1067
7ffa05e0
IR		 1068 /* Assume that ioctls without an explicit compat routine will just
1069 * work. This may not always be a good assumption, but it's better
1070 * than always failing.
1071 */
3d77461e 1072 if (nr >= ARRAY_SIZE(drm_compat_ioctls))
ed8b6704 1073 return drm_ioctl(filp, cmd, arg);
9a186645
DA		 1074
1075 fn = drm_compat_ioctls[nr];
1076
9a186645 1077 if (fn != NULL)
b5e89ed5 1078 ret = (*fn) (filp, cmd, arg);
9a186645 1079 else
ed8b6704 1080 ret = drm_ioctl(filp, cmd, arg);
9a186645
DA		 1081
1082 return ret;
1083}
b5e89ed5 1084
9a186645 1085EXPORT_SYMBOL(drm_compat_ioctl);
Linux kernel - Deliverables
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