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Merge branch 'linus' into core/rodata
[linux-2.6-block.git] / drivers / char / 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>
9a186645
DA		 31
32#include "drmP.h"
33#include "drm_core.h"
34
35#define DRM_IOCTL_VERSION32 DRM_IOWR(0x00, drm_version32_t)
36#define DRM_IOCTL_GET_UNIQUE32 DRM_IOWR(0x01, drm_unique32_t)
37#define DRM_IOCTL_GET_MAP32 DRM_IOWR(0x04, drm_map32_t)
38#define DRM_IOCTL_GET_CLIENT32 DRM_IOWR(0x05, drm_client32_t)
39#define DRM_IOCTL_GET_STATS32 DRM_IOR( 0x06, drm_stats32_t)
40
41#define DRM_IOCTL_SET_UNIQUE32 DRM_IOW( 0x10, drm_unique32_t)
42#define DRM_IOCTL_ADD_MAP32 DRM_IOWR(0x15, drm_map32_t)
43#define DRM_IOCTL_ADD_BUFS32 DRM_IOWR(0x16, drm_buf_desc32_t)
44#define DRM_IOCTL_MARK_BUFS32 DRM_IOW( 0x17, drm_buf_desc32_t)
45#define DRM_IOCTL_INFO_BUFS32 DRM_IOWR(0x18, drm_buf_info32_t)
46#define DRM_IOCTL_MAP_BUFS32 DRM_IOWR(0x19, drm_buf_map32_t)
47#define DRM_IOCTL_FREE_BUFS32 DRM_IOW( 0x1a, drm_buf_free32_t)
48
49#define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t)
50
51#define DRM_IOCTL_SET_SAREA_CTX32 DRM_IOW( 0x1c, drm_ctx_priv_map32_t)
52#define DRM_IOCTL_GET_SAREA_CTX32 DRM_IOWR(0x1d, drm_ctx_priv_map32_t)
53
54#define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t)
55#define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t)
56
57#define DRM_IOCTL_AGP_ENABLE32 DRM_IOW( 0x32, drm_agp_mode32_t)
58#define DRM_IOCTL_AGP_INFO32 DRM_IOR( 0x33, drm_agp_info32_t)
59#define DRM_IOCTL_AGP_ALLOC32 DRM_IOWR(0x34, drm_agp_buffer32_t)
60#define DRM_IOCTL_AGP_FREE32 DRM_IOW( 0x35, drm_agp_buffer32_t)
61#define DRM_IOCTL_AGP_BIND32 DRM_IOW( 0x36, drm_agp_binding32_t)
62#define DRM_IOCTL_AGP_UNBIND32 DRM_IOW( 0x37, drm_agp_binding32_t)
63
64#define DRM_IOCTL_SG_ALLOC32 DRM_IOW( 0x38, drm_scatter_gather32_t)
65#define DRM_IOCTL_SG_FREE32 DRM_IOW( 0x39, drm_scatter_gather32_t)
66
67#define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
68
69typedef struct drm_version_32 {
b5e89ed5
DA		 70 int version_major; /**< Major version */
71 int version_minor; /**< Minor version */
72 int version_patchlevel; /**< Patch level */
73 u32 name_len; /**< Length of name buffer */
74 u32 name; /**< Name of driver */
75 u32 date_len; /**< Length of date buffer */
76 u32 date; /**< User-space buffer to hold date */
77 u32 desc_len; /**< Length of desc buffer */
78 u32 desc; /**< User-space buffer to hold desc */
9a186645
DA		 79} drm_version32_t;
80
81static int compat_drm_version(struct file *file, unsigned int cmd,
82 unsigned long arg)
83{
84 drm_version32_t v32;
ff4135ae 85 struct drm_version __user *version;
9a186645
DA		 86 int err;
87
b5e89ed5 88 if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
9a186645
DA		 89 return -EFAULT;
90
91 version = compat_alloc_user_space(sizeof(*version));
92 if (!access_ok(VERIFY_WRITE, version, sizeof(*version)))
93 return -EFAULT;
94 if (__put_user(v32.name_len, &version->name_len)
95 || __put_user((void __user *)(unsigned long)v32.name,
96 &version->name)
97 || __put_user(v32.date_len, &version->date_len)
98 || __put_user((void __user *)(unsigned long)v32.date,
99 &version->date)
100 || __put_user(v32.desc_len, &version->desc_len)
101 || __put_user((void __user *)(unsigned long)v32.desc,
102 &version->desc))
103 return -EFAULT;
104
cc5ef55f 105 err = drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 106 DRM_IOCTL_VERSION, (unsigned long)version);
9a186645
DA		 107 if (err)
108 return err;
109
110 if (__get_user(v32.version_major, &version->version_major)
111 || __get_user(v32.version_minor, &version->version_minor)
112 || __get_user(v32.version_patchlevel, &version->version_patchlevel)
113 || __get_user(v32.name_len, &version->name_len)
114 || __get_user(v32.date_len, &version->date_len)
115 || __get_user(v32.desc_len, &version->desc_len))
116 return -EFAULT;
117
b5e89ed5 118 if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
9a186645
DA		 119 return -EFAULT;
120 return 0;
121}
122
123typedef struct drm_unique32 {
124 u32 unique_len; /**< Length of unique */
125 u32 unique; /**< Unique name for driver instantiation */
126} drm_unique32_t;
127
128static int compat_drm_getunique(struct file *file, unsigned int cmd,
129 unsigned long arg)
130{
131 drm_unique32_t uq32;
ff4135ae 132 struct drm_unique __user *u;
9a186645
DA		 133 int err;
134
b5e89ed5 135 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
9a186645
DA		 136 return -EFAULT;
137
138 u = compat_alloc_user_space(sizeof(*u));
139 if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
140 return -EFAULT;
141 if (__put_user(uq32.unique_len, &u->unique_len)
b5e89ed5 142 || __put_user((void __user *)(unsigned long)uq32.unique,
9a186645
DA		 143 &u->unique))
144 return -EFAULT;
145
cc5ef55f 146 err = drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 147 DRM_IOCTL_GET_UNIQUE, (unsigned long)u);
9a186645
DA		 148 if (err)
149 return err;
150
151 if (__get_user(uq32.unique_len, &u->unique_len))
152 return -EFAULT;
b5e89ed5 153 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
9a186645
DA		 154 return -EFAULT;
155 return 0;
156}
157
158static int compat_drm_setunique(struct file *file, unsigned int cmd,
159 unsigned long arg)
160{
161 drm_unique32_t uq32;
ff4135ae 162 struct drm_unique __user *u;
9a186645 163
b5e89ed5 164 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
9a186645
DA		 165 return -EFAULT;
166
167 u = compat_alloc_user_space(sizeof(*u));
168 if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
169 return -EFAULT;
170 if (__put_user(uq32.unique_len, &u->unique_len)
b5e89ed5 171 || __put_user((void __user *)(unsigned long)uq32.unique,
9a186645
DA		 172 &u->unique))
173 return -EFAULT;
174
cc5ef55f 175 return drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 176 DRM_IOCTL_SET_UNIQUE, (unsigned long)u);
9a186645
DA		 177}
178
179typedef struct drm_map32 {
b5e89ed5
DA		 180 u32 offset; /**< Requested physical address (0 for SAREA)*/
181 u32 size; /**< Requested physical size (bytes) */
ff4135ae
DA		 182 enum drm_map_type type; /**< Type of memory to map */
183 enum drm_map_flags flags; /**< Flags */
b5e89ed5
DA		 184 u32 handle; /**< User-space: "Handle" to pass to mmap() */
185 int mtrr; /**< MTRR slot used */
9a186645
DA		 186} drm_map32_t;
187
188static int compat_drm_getmap(struct file *file, unsigned int cmd,
189 unsigned long arg)
190{
191 drm_map32_t __user *argp = (void __user *)arg;
192 drm_map32_t m32;
ff4135ae 193 struct drm_map __user *map;
9a186645
DA		 194 int idx, err;
195 void *handle;
196
197 if (get_user(idx, &argp->offset))
198 return -EFAULT;
199
200 map = compat_alloc_user_space(sizeof(*map));
201 if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
202 return -EFAULT;
203 if (__put_user(idx, &map->offset))
204 return -EFAULT;
205
cc5ef55f 206 err = drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 207 DRM_IOCTL_GET_MAP, (unsigned long)map);
9a186645
DA		 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
b5e89ed5 219 m32.handle = (unsigned long)handle;
9a186645
DA		 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;
ff4135ae 231 struct drm_map __user *map;
9a186645
DA		 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
cc5ef55f 247 err = drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 248 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
DA		 257 m32.handle = (unsigned long)handle;
258 if (m32.handle != (unsigned long)handle && printk_ratelimit())
9a186645
DA		 259 printk(KERN_ERR "compat_drm_addmap truncated handle"
260 " %p for type %d offset %x\n",
261 handle, m32.type, m32.offset);
262
263 if (copy_to_user(argp, &m32, sizeof(m32)))
264 return -EFAULT;
265
266 return 0;
267}
268
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
cc5ef55f 285 return drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 286 DRM_IOCTL_RM_MAP, (unsigned long)map);
9a186645
DA		 287}
288
289typedef struct drm_client32 {
b5e89ed5
DA		 290 int idx; /**< Which client desired? */
291 int auth; /**< Is client authenticated? */
292 u32 pid; /**< Process ID */
293 u32 uid; /**< User ID */
294 u32 magic; /**< Magic */
295 u32 iocs; /**< Ioctl count */
9a186645
DA		 296} drm_client32_t;
297
298static int compat_drm_getclient(struct file *file, unsigned int cmd,
299 unsigned long arg)
300{
301 drm_client32_t c32;
302 drm_client32_t __user *argp = (void __user *)arg;
ff4135ae 303 struct drm_client __user *client;
9a186645
DA		 304 int idx, err;
305
306 if (get_user(idx, &argp->idx))
307 return -EFAULT;
308
309 client = compat_alloc_user_space(sizeof(*client));
310 if (!access_ok(VERIFY_WRITE, client, sizeof(*client)))
311 return -EFAULT;
312 if (__put_user(idx, &client->idx))
313 return -EFAULT;
314
cc5ef55f 315 err = drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 316 DRM_IOCTL_GET_CLIENT, (unsigned long)client);
9a186645
DA		 317 if (err)
318 return err;
319
320 if (__get_user(c32.auth, &client->auth)
321 || __get_user(c32.pid, &client->pid)
322 || __get_user(c32.uid, &client->uid)
323 || __get_user(c32.magic, &client->magic)
324 || __get_user(c32.iocs, &client->iocs))
325 return -EFAULT;
326
327 if (copy_to_user(argp, &c32, sizeof(c32)))
328 return -EFAULT;
329 return 0;
330}
331
332typedef struct drm_stats32 {
333 u32 count;
334 struct {
335 u32 value;
ff4135ae 336 enum drm_stat_type type;
9a186645
DA		 337 } data[15];
338} drm_stats32_t;
339
340static int compat_drm_getstats(struct file *file, unsigned int cmd,
341 unsigned long arg)
342{
343 drm_stats32_t s32;
344 drm_stats32_t __user *argp = (void __user *)arg;
ff4135ae 345 struct drm_stats __user *stats;
9a186645
DA		 346 int i, err;
347
348 stats = compat_alloc_user_space(sizeof(*stats));
349 if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats)))
350 return -EFAULT;
351
cc5ef55f 352 err = drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 353 DRM_IOCTL_GET_STATS, (unsigned long)stats);
9a186645
DA		 354 if (err)
355 return err;
356
357 if (__get_user(s32.count, &stats->count))
358 return -EFAULT;
359 for (i = 0; i < 15; ++i)
360 if (__get_user(s32.data[i].value, &stats->data[i].value)
361 || __get_user(s32.data[i].type, &stats->data[i].type))
362 return -EFAULT;
363
364 if (copy_to_user(argp, &s32, sizeof(s32)))
365 return -EFAULT;
366 return 0;
367}
368
369typedef struct drm_buf_desc32 {
b5e89ed5
DA		 370 int count; /**< Number of buffers of this size */
371 int size; /**< Size in bytes */
372 int low_mark; /**< Low water mark */
373 int high_mark; /**< High water mark */
374 int flags;
375 u32 agp_start; /**< Start address in the AGP aperture */
9a186645
DA		 376} drm_buf_desc32_t;
377
378static int compat_drm_addbufs(struct file *file, unsigned int cmd,
379 unsigned long arg)
380{
381 drm_buf_desc32_t __user *argp = (void __user *)arg;
ff4135ae 382 struct drm_buf_desc __user *buf;
9a186645
DA		 383 int err;
384 unsigned long agp_start;
385
386 buf = compat_alloc_user_space(sizeof(*buf));
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
cc5ef55f 396 err = drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 397 DRM_IOCTL_ADD_BUFS, (unsigned long)buf);
9a186645
DA		 398 if (err)
399 return err;
400
401 if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start))
402 || __get_user(agp_start, &buf->agp_start)
403 || __put_user(agp_start, &argp->agp_start))
404 return -EFAULT;
405
406 return 0;
407}
408
409static int compat_drm_markbufs(struct file *file, unsigned int cmd,
410 unsigned long arg)
411{
412 drm_buf_desc32_t b32;
413 drm_buf_desc32_t __user *argp = (void __user *)arg;
ff4135ae 414 struct drm_buf_desc __user *buf;
9a186645
DA		 415
416 if (copy_from_user(&b32, argp, sizeof(b32)))
417 return -EFAULT;
418
419 buf = compat_alloc_user_space(sizeof(*buf));
420 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
421 return -EFAULT;
422
423 if (__put_user(b32.size, &buf->size)
424 || __put_user(b32.low_mark, &buf->low_mark)
425 || __put_user(b32.high_mark, &buf->high_mark))
426 return -EFAULT;
427
cc5ef55f 428 return drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 429 DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
9a186645
DA		 430}
431
432typedef struct drm_buf_info32 {
b5e89ed5
DA		 433 int count; /**< Entries in list */
434 u32 list;
9a186645
DA		 435} drm_buf_info32_t;
436
437static int compat_drm_infobufs(struct file *file, unsigned int cmd,
438 unsigned long arg)
439{
440 drm_buf_info32_t req32;
441 drm_buf_info32_t __user *argp = (void __user *)arg;
442 drm_buf_desc32_t __user *to;
ff4135ae
DA		 443 struct drm_buf_info __user *request;
444 struct drm_buf_desc __user *list;
9a186645
DA		 445 size_t nbytes;
446 int i, err;
447 int count, actual;
448
449 if (copy_from_user(&req32, argp, sizeof(req32)))
450 return -EFAULT;
451
452 count = req32.count;
b5e89ed5 453 to = (drm_buf_desc32_t __user *) (unsigned long)req32.list;
9a186645
DA		 454 if (count < 0)
455 count = 0;
456 if (count > 0
457 && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t)))
458 return -EFAULT;
459
ff4135ae 460 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_desc);
9a186645
DA		 461 request = compat_alloc_user_space(nbytes);
462 if (!access_ok(VERIFY_WRITE, request, nbytes))
463 return -EFAULT;
ff4135ae 464 list = (struct drm_buf_desc *) (request + 1);
9a186645
DA		 465
466 if (__put_user(count, &request->count)
467 || __put_user(list, &request->list))
468 return -EFAULT;
469
cc5ef55f 470 err = drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 471 DRM_IOCTL_INFO_BUFS, (unsigned long)request);
9a186645
DA		 472 if (err)
473 return err;
474
475 if (__get_user(actual, &request->count))
476 return -EFAULT;
477 if (count >= actual)
478 for (i = 0; i < actual; ++i)
479 if (__copy_in_user(&to[i], &list[i],
ff4135ae 480 offsetof(struct drm_buf_desc, flags)))
9a186645
DA		 481 return -EFAULT;
482
483 if (__put_user(actual, &argp->count))
484 return -EFAULT;
485
486 return 0;
487}
488
489typedef struct drm_buf_pub32 {
b5e89ed5
DA		 490 int idx; /**< Index into the master buffer list */
491 int total; /**< Buffer size */
492 int used; /**< Amount of buffer in use (for DMA) */
493 u32 address; /**< Address of buffer */
9a186645
DA		 494} drm_buf_pub32_t;
495
496typedef struct drm_buf_map32 {
b5e89ed5
DA		 497 int count; /**< Length of the buffer list */
498 u32 virtual; /**< Mmap'd area in user-virtual */
499 u32 list; /**< Buffer information */
9a186645
DA		 500} drm_buf_map32_t;
501
502static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
503 unsigned long arg)
504{
505 drm_buf_map32_t __user *argp = (void __user *)arg;
506 drm_buf_map32_t req32;
507 drm_buf_pub32_t __user *list32;
ff4135ae
DA		 508 struct drm_buf_map __user *request;
509 struct drm_buf_pub __user *list;
9a186645
DA		 510 int i, err;
511 int count, actual;
512 size_t nbytes;
513 void __user *addr;
514
515 if (copy_from_user(&req32, argp, sizeof(req32)))
516 return -EFAULT;
517 count = req32.count;
518 list32 = (void __user *)(unsigned long)req32.list;
519
520 if (count < 0)
521 return -EINVAL;
ff4135ae 522 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub);
9a186645
DA		 523 request = compat_alloc_user_space(nbytes);
524 if (!access_ok(VERIFY_WRITE, request, nbytes))
525 return -EFAULT;
ff4135ae 526 list = (struct drm_buf_pub *) (request + 1);
9a186645
DA		 527
528 if (__put_user(count, &request->count)
529 || __put_user(list, &request->list))
530 return -EFAULT;
531
cc5ef55f 532 err = drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 533 DRM_IOCTL_MAP_BUFS, (unsigned long)request);
9a186645
DA		 534 if (err)
535 return err;
536
537 if (__get_user(actual, &request->count))
538 return -EFAULT;
539 if (count >= actual)
540 for (i = 0; i < actual; ++i)
541 if (__copy_in_user(&list32[i], &list[i],
ff4135ae 542 offsetof(struct drm_buf_pub, address))
9a186645 543 || __get_user(addr, &list[i].address)
b5e89ed5 544 || __put_user((unsigned long)addr,
9a186645
DA		 545 &list32[i].address))
546 return -EFAULT;
547
548 if (__put_user(actual, &argp->count)
549 || __get_user(addr, &request->virtual)
b5e89ed5 550 || __put_user((unsigned long)addr, &argp->virtual))
9a186645
DA		 551 return -EFAULT;
552
553 return 0;
554}
555
556typedef struct drm_buf_free32 {
b5e89ed5
DA		 557 int count;
558 u32 list;
9a186645
DA		 559} drm_buf_free32_t;
560
561static int compat_drm_freebufs(struct file *file, unsigned int cmd,
562 unsigned long arg)
563{
564 drm_buf_free32_t req32;
ff4135ae 565 struct drm_buf_free __user *request;
9a186645
DA		 566 drm_buf_free32_t __user *argp = (void __user *)arg;
567
568 if (copy_from_user(&req32, argp, sizeof(req32)))
569 return -EFAULT;
570
571 request = compat_alloc_user_space(sizeof(*request));
572 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
573 return -EFAULT;
574 if (__put_user(req32.count, &request->count)
b5e89ed5 575 || __put_user((int __user *)(unsigned long)req32.list,
9a186645
DA		 576 &request->list))
577 return -EFAULT;
578
cc5ef55f 579 return drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 580 DRM_IOCTL_FREE_BUFS, (unsigned long)request);
9a186645
DA		 581}
582
583typedef struct drm_ctx_priv_map32 {
b5e89ed5
DA		 584 unsigned int ctx_id; /**< Context requesting private mapping */
585 u32 handle; /**< Handle of map */
9a186645
DA		 586} drm_ctx_priv_map32_t;
587
588static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
589 unsigned long arg)
590{
591 drm_ctx_priv_map32_t req32;
ff4135ae 592 struct drm_ctx_priv_map __user *request;
9a186645
DA		 593 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
594
595 if (copy_from_user(&req32, argp, sizeof(req32)))
596 return -EFAULT;
597
598 request = compat_alloc_user_space(sizeof(*request));
599 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
600 return -EFAULT;
601 if (__put_user(req32.ctx_id, &request->ctx_id)
b5e89ed5 602 || __put_user((void *)(unsigned long)req32.handle,
9a186645
DA		 603 &request->handle))
604 return -EFAULT;
605
cc5ef55f 606 return drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 607 DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
9a186645
DA		 608}
609
610static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
611 unsigned long arg)
612{
ff4135ae 613 struct drm_ctx_priv_map __user *request;
9a186645
DA		 614 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
615 int err;
616 unsigned int ctx_id;
617 void *handle;
618
619 if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp))
620 || __get_user(ctx_id, &argp->ctx_id))
621 return -EFAULT;
622
623 request = compat_alloc_user_space(sizeof(*request));
624 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
625 return -EFAULT;
626 if (__put_user(ctx_id, &request->ctx_id))
627 return -EFAULT;
628
cc5ef55f 629 err = drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 630 DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
9a186645
DA		 631 if (err)
632 return err;
633
634 if (__get_user(handle, &request->handle)
b5e89ed5 635 || __put_user((unsigned long)handle, &argp->handle))
9a186645
DA		 636 return -EFAULT;
637
638 return 0;
639}
640
641typedef struct drm_ctx_res32 {
b5e89ed5
DA		 642 int count;
643 u32 contexts;
9a186645
DA		 644} drm_ctx_res32_t;
645
646static int compat_drm_resctx(struct file *file, unsigned int cmd,
647 unsigned long arg)
648{
649 drm_ctx_res32_t __user *argp = (void __user *)arg;
650 drm_ctx_res32_t res32;
ff4135ae 651 struct drm_ctx_res __user *res;
9a186645
DA		 652 int err;
653
654 if (copy_from_user(&res32, argp, sizeof(res32)))
655 return -EFAULT;
656
657 res = compat_alloc_user_space(sizeof(*res));
658 if (!access_ok(VERIFY_WRITE, res, sizeof(*res)))
659 return -EFAULT;
660 if (__put_user(res32.count, &res->count)
ff4135ae 661 || __put_user((struct drm_ctx __user *) (unsigned long)res32.contexts,
9a186645
DA		 662 &res->contexts))
663 return -EFAULT;
664
cc5ef55f 665 err = drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 666 DRM_IOCTL_RES_CTX, (unsigned long)res);
9a186645
DA		 667 if (err)
668 return err;
669
670 if (__get_user(res32.count, &res->count)
671 || __put_user(res32.count, &argp->count))
672 return -EFAULT;
673
674 return 0;
675}
676
677typedef struct drm_dma32 {
b5e89ed5
DA		 678 int context; /**< Context handle */
679 int send_count; /**< Number of buffers to send */
680 u32 send_indices; /**< List of handles to buffers */
681 u32 send_sizes; /**< Lengths of data to send */
ff4135ae 682 enum drm_dma_flags flags; /**< Flags */
b5e89ed5
DA		 683 int request_count; /**< Number of buffers requested */
684 int request_size; /**< Desired size for buffers */
685 u32 request_indices; /**< Buffer information */
686 u32 request_sizes;
687 int granted_count; /**< Number of buffers granted */
9a186645
DA		 688} drm_dma32_t;
689
690static int compat_drm_dma(struct file *file, unsigned int cmd,
691 unsigned long arg)
692{
693 drm_dma32_t d32;
b5e89ed5 694 drm_dma32_t __user *argp = (void __user *)arg;
ff4135ae 695 struct drm_dma __user *d;
9a186645
DA		 696 int err;
697
698 if (copy_from_user(&d32, argp, sizeof(d32)))
699 return -EFAULT;
700
701 d = compat_alloc_user_space(sizeof(*d));
702 if (!access_ok(VERIFY_WRITE, d, sizeof(*d)))
703 return -EFAULT;
704
705 if (__put_user(d32.context, &d->context)
706 || __put_user(d32.send_count, &d->send_count)
b5e89ed5 707 || __put_user((int __user *)(unsigned long)d32.send_indices,
9a186645 708 &d->send_indices)
b5e89ed5 709 || __put_user((int __user *)(unsigned long)d32.send_sizes,
9a186645
DA		 710 &d->send_sizes)
711 || __put_user(d32.flags, &d->flags)
712 || __put_user(d32.request_count, &d->request_count)
b5e89ed5 713 || __put_user((int __user *)(unsigned long)d32.request_indices,
9a186645 714 &d->request_indices)
b5e89ed5 715 || __put_user((int __user *)(unsigned long)d32.request_sizes,
9a186645
DA		 716 &d->request_sizes))
717 return -EFAULT;
718
cc5ef55f 719 err = drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 720 DRM_IOCTL_DMA, (unsigned long)d);
9a186645
DA		 721 if (err)
722 return err;
723
724 if (__get_user(d32.request_size, &d->request_size)
725 || __get_user(d32.granted_count, &d->granted_count)
726 || __put_user(d32.request_size, &argp->request_size)
727 || __put_user(d32.granted_count, &argp->granted_count))
728 return -EFAULT;
729
730 return 0;
731}
732
733#if __OS_HAS_AGP
734typedef struct drm_agp_mode32 {
735 u32 mode; /**< AGP mode */
736} drm_agp_mode32_t;
737
738static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
739 unsigned long arg)
740{
741 drm_agp_mode32_t __user *argp = (void __user *)arg;
742 drm_agp_mode32_t m32;
ff4135ae 743 struct drm_agp_mode __user *mode;
9a186645
DA		 744
745 if (get_user(m32.mode, &argp->mode))
746 return -EFAULT;
747
748 mode = compat_alloc_user_space(sizeof(*mode));
749 if (put_user(m32.mode, &mode->mode))
750 return -EFAULT;
751
cc5ef55f 752 return drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 753 DRM_IOCTL_AGP_ENABLE, (unsigned long)mode);
9a186645
DA		 754}
755
756typedef struct drm_agp_info32 {
b5e89ed5
DA		 757 int agp_version_major;
758 int agp_version_minor;
759 u32 mode;
760 u32 aperture_base; /* physical address */
761 u32 aperture_size; /* bytes */
762 u32 memory_allowed; /* bytes */
763 u32 memory_used;
764
765 /* PCI information */
9a186645
DA		 766 unsigned short id_vendor;
767 unsigned short id_device;
768} drm_agp_info32_t;
769
770static int compat_drm_agp_info(struct file *file, unsigned int cmd,
771 unsigned long arg)
772{
773 drm_agp_info32_t __user *argp = (void __user *)arg;
774 drm_agp_info32_t i32;
ff4135ae 775 struct drm_agp_info __user *info;
9a186645
DA		 776 int err;
777
778 info = compat_alloc_user_space(sizeof(*info));
779 if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
780 return -EFAULT;
781
cc5ef55f 782 err = drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 783 DRM_IOCTL_AGP_INFO, (unsigned long)info);
9a186645
DA		 784 if (err)
785 return err;
786
787 if (__get_user(i32.agp_version_major, &info->agp_version_major)
788 || __get_user(i32.agp_version_minor, &info->agp_version_minor)
789 || __get_user(i32.mode, &info->mode)
790 || __get_user(i32.aperture_base, &info->aperture_base)
791 || __get_user(i32.aperture_size, &info->aperture_size)
792 || __get_user(i32.memory_allowed, &info->memory_allowed)
793 || __get_user(i32.memory_used, &info->memory_used)
794 || __get_user(i32.id_vendor, &info->id_vendor)
795 || __get_user(i32.id_device, &info->id_device))
796 return -EFAULT;
797
798 if (copy_to_user(argp, &i32, sizeof(i32)))
799 return -EFAULT;
800
801 return 0;
802}
803
804typedef struct drm_agp_buffer32 {
805 u32 size; /**< In bytes -- will round to page boundary */
806 u32 handle; /**< Used for binding / unbinding */
807 u32 type; /**< Type of memory to allocate */
b5e89ed5 808 u32 physical; /**< Physical used by i810 */
9a186645
DA		 809} drm_agp_buffer32_t;
810
811static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
812 unsigned long arg)
813{
814 drm_agp_buffer32_t __user *argp = (void __user *)arg;
815 drm_agp_buffer32_t req32;
ff4135ae 816 struct drm_agp_buffer __user *request;
9a186645
DA		 817 int err;
818
819 if (copy_from_user(&req32, argp, sizeof(req32)))
820 return -EFAULT;
821
822 request = compat_alloc_user_space(sizeof(*request));
823 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
824 || __put_user(req32.size, &request->size)
825 || __put_user(req32.type, &request->type))
826 return -EFAULT;
827
cc5ef55f 828 err = drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 829 DRM_IOCTL_AGP_ALLOC, (unsigned long)request);
9a186645
DA		 830 if (err)
831 return err;
832
833 if (__get_user(req32.handle, &request->handle)
834 || __get_user(req32.physical, &request->physical)
835 || copy_to_user(argp, &req32, sizeof(req32))) {
cc5ef55f 836 drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 837 DRM_IOCTL_AGP_FREE, (unsigned long)request);
9a186645
DA		 838 return -EFAULT;
839 }
840
841 return 0;
842}
843
844static int compat_drm_agp_free(struct file *file, unsigned int cmd,
845 unsigned long arg)
846{
847 drm_agp_buffer32_t __user *argp = (void __user *)arg;
ff4135ae 848 struct drm_agp_buffer __user *request;
9a186645
DA		 849 u32 handle;
850
851 request = compat_alloc_user_space(sizeof(*request));
852 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
853 || get_user(handle, &argp->handle)
854 || __put_user(handle, &request->handle))
855 return -EFAULT;
856
cc5ef55f 857 return drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 858 DRM_IOCTL_AGP_FREE, (unsigned long)request);
9a186645
DA		 859}
860
861typedef struct drm_agp_binding32 {
862 u32 handle; /**< From drm_agp_buffer */
863 u32 offset; /**< In bytes -- will round to page boundary */
864} drm_agp_binding32_t;
865
866static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
867 unsigned long arg)
868{
869 drm_agp_binding32_t __user *argp = (void __user *)arg;
870 drm_agp_binding32_t req32;
ff4135ae 871 struct drm_agp_binding __user *request;
9a186645
DA		 872
873 if (copy_from_user(&req32, argp, sizeof(req32)))
874 return -EFAULT;
875
876 request = compat_alloc_user_space(sizeof(*request));
877 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
878 || __put_user(req32.handle, &request->handle)
879 || __put_user(req32.offset, &request->offset))
880 return -EFAULT;
881
cc5ef55f 882 return drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 883 DRM_IOCTL_AGP_BIND, (unsigned long)request);
9a186645
DA		 884}
885
886static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
887 unsigned long arg)
888{
889 drm_agp_binding32_t __user *argp = (void __user *)arg;
ff4135ae 890 struct drm_agp_binding __user *request;
9a186645
DA		 891 u32 handle;
892
893 request = compat_alloc_user_space(sizeof(*request));
894 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
895 || get_user(handle, &argp->handle)
896 || __put_user(handle, &request->handle))
897 return -EFAULT;
898
cc5ef55f 899 return drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 900 DRM_IOCTL_AGP_UNBIND, (unsigned long)request);
9a186645 901}
b5e89ed5 902#endif /* __OS_HAS_AGP */
9a186645
DA		 903
904typedef struct drm_scatter_gather32 {
905 u32 size; /**< In bytes -- will round to page boundary */
906 u32 handle; /**< Used for mapping / unmapping */
907} drm_scatter_gather32_t;
908
909static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
910 unsigned long arg)
911{
912 drm_scatter_gather32_t __user *argp = (void __user *)arg;
ff4135ae 913 struct drm_scatter_gather __user *request;
9a186645
DA		 914 int err;
915 unsigned long x;
916
917 request = compat_alloc_user_space(sizeof(*request));
918 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
919 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
920 || __get_user(x, &argp->size)
921 || __put_user(x, &request->size))
922 return -EFAULT;
923
cc5ef55f 924 err = drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 925 DRM_IOCTL_SG_ALLOC, (unsigned long)request);
9a186645
DA		 926 if (err)
927 return err;
928
929 /* XXX not sure about the handle conversion here... */
930 if (__get_user(x, &request->handle)
931 || __put_user(x >> PAGE_SHIFT, &argp->handle))
932 return -EFAULT;
933
934 return 0;
935}
936
937static int compat_drm_sg_free(struct file *file, unsigned int cmd,
938 unsigned long arg)
939{
940 drm_scatter_gather32_t __user *argp = (void __user *)arg;
ff4135ae 941 struct drm_scatter_gather __user *request;
9a186645
DA		 942 unsigned long x;
943
944 request = compat_alloc_user_space(sizeof(*request));
945 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
946 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
947 || __get_user(x, &argp->handle)
948 || __put_user(x << PAGE_SHIFT, &request->handle))
949 return -EFAULT;
950
cc5ef55f 951 return drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 952 DRM_IOCTL_SG_FREE, (unsigned long)request);
9a186645
DA		 953}
954
955struct drm_wait_vblank_request32 {
ff4135ae 956 enum drm_vblank_seq_type type;
9a186645
DA		 957 unsigned int sequence;
958 u32 signal;
959};
960
961struct drm_wait_vblank_reply32 {
ff4135ae 962 enum drm_vblank_seq_type type;
9a186645
DA		 963 unsigned int sequence;
964 s32 tval_sec;
965 s32 tval_usec;
966};
967
968typedef union drm_wait_vblank32 {
969 struct drm_wait_vblank_request32 request;
970 struct drm_wait_vblank_reply32 reply;
971} drm_wait_vblank32_t;
972
973static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
974 unsigned long arg)
975{
976 drm_wait_vblank32_t __user *argp = (void __user *)arg;
977 drm_wait_vblank32_t req32;
ff4135ae 978 union drm_wait_vblank __user *request;
9a186645
DA		 979 int err;
980
981 if (copy_from_user(&req32, argp, sizeof(req32)))
982 return -EFAULT;
983
984 request = compat_alloc_user_space(sizeof(*request));
985 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
986 || __put_user(req32.request.type, &request->request.type)
987 || __put_user(req32.request.sequence, &request->request.sequence)
988 || __put_user(req32.request.signal, &request->request.signal))
989 return -EFAULT;
990
cc5ef55f 991 err = drm_ioctl(file->f_path.dentry->d_inode, file,
b5e89ed5 992 DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
9a186645
DA		 993 if (err)
994 return err;
995
996 if (__get_user(req32.reply.type, &request->reply.type)
997 || __get_user(req32.reply.sequence, &request->reply.sequence)
998 || __get_user(req32.reply.tval_sec, &request->reply.tval_sec)
999 || __get_user(req32.reply.tval_usec, &request->reply.tval_usec))
1000 return -EFAULT;
1001
1002 if (copy_to_user(argp, &req32, sizeof(req32)))
1003 return -EFAULT;
1004
1005 return 0;
1006}
1007
1008drm_ioctl_compat_t *drm_compat_ioctls[] = {
1009 [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
1010 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
1011 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap,
1012 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient,
1013 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats,
1014 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique,
1015 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap,
1016 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs,
1017 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs,
1018 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs,
1019 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs,
1020 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs,
1021 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap,
1022 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx,
1023 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx,
1024 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx,
1025 [DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma,
1026#if __OS_HAS_AGP
1027 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable,
1028 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info,
1029 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc,
1030 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free,
1031 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind,
1032 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind,
1033#endif
1034 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc,
1035 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free,
1036 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
1037};
1038
1039/**
1040 * Called whenever a 32-bit process running under a 64-bit kernel
1041 * performs an ioctl on /dev/drm.
1042 *
6c340eac 1043 * \param file_priv DRM file private.
9a186645
DA		 1044 * \param cmd command.
1045 * \param arg user argument.
1046 * \return zero on success or negative number on failure.
1047 */
1048long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1049{
1050 unsigned int nr = DRM_IOCTL_NR(cmd);
1051 drm_ioctl_compat_t *fn;
1052 int ret;
1053
7ffa05e0
IR		 1054 /* Assume that ioctls without an explicit compat routine will just
1055 * work. This may not always be a good assumption, but it's better
1056 * than always failing.
1057 */
3d77461e 1058 if (nr >= ARRAY_SIZE(drm_compat_ioctls))
7ffa05e0 1059 return drm_ioctl(filp->f_dentry->d_inode, filp, cmd, arg);
9a186645
DA		 1060
1061 fn = drm_compat_ioctls[nr];
1062
1063 lock_kernel(); /* XXX for now */
1064 if (fn != NULL)
b5e89ed5 1065 ret = (*fn) (filp, cmd, arg);
9a186645 1066 else
cc5ef55f 1067 ret = drm_ioctl(filp->f_path.dentry->d_inode, filp, cmd, arg);
9a186645
DA		 1068 unlock_kernel();
1069
1070 return ret;
1071}
b5e89ed5 1072
9a186645 1073EXPORT_SYMBOL(drm_compat_ioctl);
Linux 6.x block layer and io_uring tree(s)