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switch compat_drm_addbufs() to drm_ioctl_kernel()
[linux-2.6-block.git] / drivers / gpu / drm / drm_ioc32.c
CommitLineData
2640981f 1/*
9a186645
DA		 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 34#include <drm/drmP.h>
ff22ff9e 35#include "drm_legacy.h"
9a186645
DA		 36
37#define DRM_IOCTL_VERSION32 DRM_IOWR(0x00, drm_version32_t)
38#define DRM_IOCTL_GET_UNIQUE32 DRM_IOWR(0x01, drm_unique32_t)
39#define DRM_IOCTL_GET_MAP32 DRM_IOWR(0x04, drm_map32_t)
40#define DRM_IOCTL_GET_CLIENT32 DRM_IOWR(0x05, drm_client32_t)
41#define DRM_IOCTL_GET_STATS32 DRM_IOR( 0x06, drm_stats32_t)
42
43#define DRM_IOCTL_SET_UNIQUE32 DRM_IOW( 0x10, drm_unique32_t)
44#define DRM_IOCTL_ADD_MAP32 DRM_IOWR(0x15, drm_map32_t)
45#define DRM_IOCTL_ADD_BUFS32 DRM_IOWR(0x16, drm_buf_desc32_t)
46#define DRM_IOCTL_MARK_BUFS32 DRM_IOW( 0x17, drm_buf_desc32_t)
47#define DRM_IOCTL_INFO_BUFS32 DRM_IOWR(0x18, drm_buf_info32_t)
48#define DRM_IOCTL_MAP_BUFS32 DRM_IOWR(0x19, drm_buf_map32_t)
49#define DRM_IOCTL_FREE_BUFS32 DRM_IOW( 0x1a, drm_buf_free32_t)
50
51#define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t)
52
53#define DRM_IOCTL_SET_SAREA_CTX32 DRM_IOW( 0x1c, drm_ctx_priv_map32_t)
54#define DRM_IOCTL_GET_SAREA_CTX32 DRM_IOWR(0x1d, drm_ctx_priv_map32_t)
55
56#define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t)
57#define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t)
58
59#define DRM_IOCTL_AGP_ENABLE32 DRM_IOW( 0x32, drm_agp_mode32_t)
60#define DRM_IOCTL_AGP_INFO32 DRM_IOR( 0x33, drm_agp_info32_t)
61#define DRM_IOCTL_AGP_ALLOC32 DRM_IOWR(0x34, drm_agp_buffer32_t)
62#define DRM_IOCTL_AGP_FREE32 DRM_IOW( 0x35, drm_agp_buffer32_t)
63#define DRM_IOCTL_AGP_BIND32 DRM_IOW( 0x36, drm_agp_binding32_t)
64#define DRM_IOCTL_AGP_UNBIND32 DRM_IOW( 0x37, drm_agp_binding32_t)
65
66#define DRM_IOCTL_SG_ALLOC32 DRM_IOW( 0x38, drm_scatter_gather32_t)
67#define DRM_IOCTL_SG_FREE32 DRM_IOW( 0x39, drm_scatter_gather32_t)
68
49568873
EA		 69#define DRM_IOCTL_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t)
70
9a186645
DA		 71#define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
72
c631d5f9
TU		 73#define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, drm_mode_fb_cmd232_t)
74
9a186645 75typedef struct drm_version_32 {
2640981f
DV		 76 int version_major; /* Major version */
77 int version_minor; /* Minor version */
78 int version_patchlevel; /* Patch level */
79 u32 name_len; /* Length of name buffer */
80 u32 name; /* Name of driver */
81 u32 date_len; /* Length of date buffer */
82 u32 date; /* User-space buffer to hold date */
83 u32 desc_len; /* Length of desc buffer */
84 u32 desc; /* User-space buffer to hold desc */
9a186645
DA		 85} drm_version32_t;
86
87static int compat_drm_version(struct file *file, unsigned int cmd,
88 unsigned long arg)
89{
90 drm_version32_t v32;
ff4135ae 91 struct drm_version __user *version;
9a186645
DA		 92 int err;
93
b5e89ed5 94 if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
9a186645
DA		 95 return -EFAULT;
96
97 version = compat_alloc_user_space(sizeof(*version));
1f96beec 98 if (!version)
9a186645
DA		 99 return -EFAULT;
100 if (__put_user(v32.name_len, &version->name_len)
101 || __put_user((void __user *)(unsigned long)v32.name,
102 &version->name)
103 || __put_user(v32.date_len, &version->date_len)
104 || __put_user((void __user *)(unsigned long)v32.date,
105 &version->date)
106 || __put_user(v32.desc_len, &version->desc_len)
107 || __put_user((void __user *)(unsigned long)v32.desc,
108 &version->desc))
109 return -EFAULT;
110
ed8b6704 111 err = drm_ioctl(file,
b5e89ed5 112 DRM_IOCTL_VERSION, (unsigned long)version);
9a186645
DA		 113 if (err)
114 return err;
115
116 if (__get_user(v32.version_major, &version->version_major)
117 || __get_user(v32.version_minor, &version->version_minor)
118 || __get_user(v32.version_patchlevel, &version->version_patchlevel)
119 || __get_user(v32.name_len, &version->name_len)
120 || __get_user(v32.date_len, &version->date_len)
121 || __get_user(v32.desc_len, &version->desc_len))
122 return -EFAULT;
123
b5e89ed5 124 if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
9a186645
DA		 125 return -EFAULT;
126 return 0;
127}
128
129typedef struct drm_unique32 {
2640981f
DV		 130 u32 unique_len; /* Length of unique */
131 u32 unique; /* Unique name for driver instantiation */
9a186645
DA		 132} drm_unique32_t;
133
134static int compat_drm_getunique(struct file *file, unsigned int cmd,
135 unsigned long arg)
136{
137 drm_unique32_t uq32;
ff4135ae 138 struct drm_unique __user *u;
9a186645
DA		 139 int err;
140
b5e89ed5 141 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
9a186645
DA		 142 return -EFAULT;
143
144 u = compat_alloc_user_space(sizeof(*u));
1f96beec 145 if (!u)
9a186645
DA		 146 return -EFAULT;
147 if (__put_user(uq32.unique_len, &u->unique_len)
b5e89ed5 148 || __put_user((void __user *)(unsigned long)uq32.unique,
9a186645
DA		 149 &u->unique))
150 return -EFAULT;
151
ed8b6704 152 err = drm_ioctl(file, DRM_IOCTL_GET_UNIQUE, (unsigned long)u);
9a186645
DA		 153 if (err)
154 return err;
155
156 if (__get_user(uq32.unique_len, &u->unique_len))
157 return -EFAULT;
b5e89ed5 158 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
9a186645
DA		 159 return -EFAULT;
160 return 0;
161}
162
163static int compat_drm_setunique(struct file *file, unsigned int cmd,
164 unsigned long arg)
165{
166 drm_unique32_t uq32;
ff4135ae 167 struct drm_unique __user *u;
9a186645 168
b5e89ed5 169 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
9a186645
DA		 170 return -EFAULT;
171
172 u = compat_alloc_user_space(sizeof(*u));
1f96beec 173 if (!u)
9a186645
DA		 174 return -EFAULT;
175 if (__put_user(uq32.unique_len, &u->unique_len)
b5e89ed5 176 || __put_user((void __user *)(unsigned long)uq32.unique,
9a186645
DA		 177 &u->unique))
178 return -EFAULT;
179
ed8b6704 180 return drm_ioctl(file, DRM_IOCTL_SET_UNIQUE, (unsigned long)u);
9a186645
DA		 181}
182
183typedef struct drm_map32 {
2640981f
DV		 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 */
9a186645
DA		 190} drm_map32_t;
191
192static int compat_drm_getmap(struct file *file, unsigned int cmd,
193 unsigned long arg)
194{
195 drm_map32_t __user *argp = (void __user *)arg;
196 drm_map32_t m32;
ff4135ae 197 struct drm_map __user *map;
9a186645
DA		 198 int idx, err;
199 void *handle;
200
201 if (get_user(idx, &argp->offset))
202 return -EFAULT;
203
204 map = compat_alloc_user_space(sizeof(*map));
1f96beec 205 if (!map)
9a186645
DA		 206 return -EFAULT;
207 if (__put_user(idx, &map->offset))
208 return -EFAULT;
209
ed8b6704 210 err = drm_ioctl(file, DRM_IOCTL_GET_MAP, (unsigned long)map);
9a186645
DA		 211 if (err)
212 return err;
213
214 if (__get_user(m32.offset, &map->offset)
215 || __get_user(m32.size, &map->size)
216 || __get_user(m32.type, &map->type)
217 || __get_user(m32.flags, &map->flags)
218 || __get_user(handle, &map->handle)
219 || __get_user(m32.mtrr, &map->mtrr))
220 return -EFAULT;
221
b5e89ed5 222 m32.handle = (unsigned long)handle;
9a186645
DA		 223 if (copy_to_user(argp, &m32, sizeof(m32)))
224 return -EFAULT;
225 return 0;
226
227}
228
229static int compat_drm_addmap(struct file *file, unsigned int cmd,
230 unsigned long arg)
231{
232 drm_map32_t __user *argp = (void __user *)arg;
233 drm_map32_t m32;
ff4135ae 234 struct drm_map __user *map;
9a186645
DA		 235 int err;
236 void *handle;
237
238 if (copy_from_user(&m32, argp, sizeof(m32)))
239 return -EFAULT;
240
241 map = compat_alloc_user_space(sizeof(*map));
1f96beec 242 if (!map)
9a186645
DA		 243 return -EFAULT;
244 if (__put_user(m32.offset, &map->offset)
245 || __put_user(m32.size, &map->size)
246 || __put_user(m32.type, &map->type)
247 || __put_user(m32.flags, &map->flags))
248 return -EFAULT;
249
ed8b6704 250 err = drm_ioctl(file, DRM_IOCTL_ADD_MAP, (unsigned long)map);
9a186645
DA		 251 if (err)
252 return err;
253
254 if (__get_user(m32.offset, &map->offset)
255 || __get_user(m32.mtrr, &map->mtrr)
256 || __get_user(handle, &map->handle))
257 return -EFAULT;
258
b5e89ed5 259 m32.handle = (unsigned long)handle;
cafe8d84 260 if (m32.handle != (unsigned long)handle)
499447db 261 pr_err_ratelimited("compat_drm_addmap truncated handle %p for type %d offset %x\n",
cafe8d84 262 handle, m32.type, m32.offset);
9a186645
DA		 263
264 if (copy_to_user(argp, &m32, sizeof(m32)))
265 return -EFAULT;
266
267 return 0;
268}
269
270static int compat_drm_rmmap(struct file *file, unsigned int cmd,
271 unsigned long arg)
272{
273 drm_map32_t __user *argp = (void __user *)arg;
ff4135ae 274 struct drm_map __user *map;
9a186645
DA		 275 u32 handle;
276
277 if (get_user(handle, &argp->handle))
278 return -EFAULT;
279
280 map = compat_alloc_user_space(sizeof(*map));
1f96beec 281 if (!map)
9a186645 282 return -EFAULT;
b5e89ed5 283 if (__put_user((void *)(unsigned long)handle, &map->handle))
9a186645
DA		 284 return -EFAULT;
285
ed8b6704 286 return drm_ioctl(file, DRM_IOCTL_RM_MAP, (unsigned long)map);
9a186645
DA		 287}
288
289typedef struct drm_client32 {
2640981f
DV		 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));
1f96beec 310 if (!client)
9a186645
DA		 311 return -EFAULT;
312 if (__put_user(idx, &client->idx))
313 return -EFAULT;
314
ed8b6704 315 err = drm_ioctl(file, DRM_IOCTL_GET_CLIENT, (unsigned long)client);
9a186645
DA		 316 if (err)
317 return err;
318
08bc3d4e
JL		 319 if (__get_user(c32.idx, &client->idx)
320 || __get_user(c32.auth, &client->auth)
9a186645
DA		 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
ec913f31 348 memset(&s32, 0, sizeof(drm_stats32_t));
9a186645 349 stats = compat_alloc_user_space(sizeof(*stats));
1f96beec 350 if (!stats)
9a186645
DA		 351 return -EFAULT;
352
ed8b6704 353 err = drm_ioctl(file, DRM_IOCTL_GET_STATS, (unsigned long)stats);
9a186645
DA		 354 if (err)
355 return err;
356
357 if (__get_user(s32.count, &stats->count))
358 return -EFAULT;
359 for (i = 0; i < 15; ++i)
360 if (__get_user(s32.data[i].value, &stats->data[i].value)
361 || __get_user(s32.data[i].type, &stats->data[i].type))
362 return -EFAULT;
363
364 if (copy_to_user(argp, &s32, sizeof(s32)))
365 return -EFAULT;
366 return 0;
367}
368
369typedef struct drm_buf_desc32 {
2640981f
DV		 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 */
b5e89ed5 374 int flags;
2640981f 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;
ff22ff9e
AV		 382 drm_buf_desc32_t desc32;
383 struct drm_buf_desc desc;
9a186645 384 int err;
9a186645 385
ff22ff9e 386 if (copy_from_user(&desc32, argp, sizeof(drm_buf_desc32_t)))
9a186645
DA		 387 return -EFAULT;
388
ff22ff9e
AV		 389 desc = (struct drm_buf_desc){
390 desc32.count, desc32.size, desc32.low_mark, desc32.high_mark,
391 desc32.flags, desc32.agp_start
392 };
9a186645 393
ff22ff9e
AV		 394 err = drm_ioctl_kernel(file, drm_legacy_addbufs, &desc,
395 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
9a186645
DA		 396 if (err)
397 return err;
398
ff22ff9e
AV		 399 desc32 = (drm_buf_desc32_t){
400 desc.count, desc.size, desc.low_mark, desc.high_mark,
401 desc.flags, desc.agp_start
402 };
403 if (copy_to_user(argp, &desc32, sizeof(drm_buf_desc32_t)))
9a186645
DA		 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));
1f96beec 420 if (!buf)
9a186645
DA		 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
ed8b6704 428 return drm_ioctl(file, DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
9a186645
DA		 429}
430
431typedef struct drm_buf_info32 {
b5e89ed5
DA		 432 int count; /**< Entries in list */
433 u32 list;
9a186645
DA		 434} drm_buf_info32_t;
435
436static int compat_drm_infobufs(struct file *file, unsigned int cmd,
437 unsigned long arg)
438{
439 drm_buf_info32_t req32;
440 drm_buf_info32_t __user *argp = (void __user *)arg;
441 drm_buf_desc32_t __user *to;
ff4135ae
DA		 442 struct drm_buf_info __user *request;
443 struct drm_buf_desc __user *list;
9a186645
DA		 444 size_t nbytes;
445 int i, err;
446 int count, actual;
447
448 if (copy_from_user(&req32, argp, sizeof(req32)))
449 return -EFAULT;
450
451 count = req32.count;
b5e89ed5 452 to = (drm_buf_desc32_t __user *) (unsigned long)req32.list;
9a186645
DA		 453 if (count < 0)
454 count = 0;
455 if (count > 0
456 && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t)))
457 return -EFAULT;
458
ff4135ae 459 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_desc);
9a186645 460 request = compat_alloc_user_space(nbytes);
1f96beec 461 if (!request)
9a186645 462 return -EFAULT;
ff4135ae 463 list = (struct drm_buf_desc *) (request + 1);
9a186645
DA		 464
465 if (__put_user(count, &request->count)
466 || __put_user(list, &request->list))
467 return -EFAULT;
468
ed8b6704 469 err = drm_ioctl(file, DRM_IOCTL_INFO_BUFS, (unsigned long)request);
9a186645
DA		 470 if (err)
471 return err;
472
473 if (__get_user(actual, &request->count))
474 return -EFAULT;
475 if (count >= actual)
476 for (i = 0; i < actual; ++i)
477 if (__copy_in_user(&to[i], &list[i],
ff4135ae 478 offsetof(struct drm_buf_desc, flags)))
9a186645
DA		 479 return -EFAULT;
480
481 if (__put_user(actual, &argp->count))
482 return -EFAULT;
483
484 return 0;
485}
486
487typedef struct drm_buf_pub32 {
b5e89ed5
DA		 488 int idx; /**< Index into the master buffer list */
489 int total; /**< Buffer size */
490 int used; /**< Amount of buffer in use (for DMA) */
491 u32 address; /**< Address of buffer */
9a186645
DA		 492} drm_buf_pub32_t;
493
494typedef struct drm_buf_map32 {
b5e89ed5
DA		 495 int count; /**< Length of the buffer list */
496 u32 virtual; /**< Mmap'd area in user-virtual */
497 u32 list; /**< Buffer information */
9a186645
DA		 498} drm_buf_map32_t;
499
500static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
501 unsigned long arg)
502{
503 drm_buf_map32_t __user *argp = (void __user *)arg;
504 drm_buf_map32_t req32;
505 drm_buf_pub32_t __user *list32;
ff4135ae
DA		 506 struct drm_buf_map __user *request;
507 struct drm_buf_pub __user *list;
9a186645
DA		 508 int i, err;
509 int count, actual;
510 size_t nbytes;
511 void __user *addr;
512
513 if (copy_from_user(&req32, argp, sizeof(req32)))
514 return -EFAULT;
515 count = req32.count;
516 list32 = (void __user *)(unsigned long)req32.list;
517
518 if (count < 0)
519 return -EINVAL;
ff4135ae 520 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub);
9a186645 521 request = compat_alloc_user_space(nbytes);
1f96beec 522 if (!request)
9a186645 523 return -EFAULT;
ff4135ae 524 list = (struct drm_buf_pub *) (request + 1);
9a186645
DA		 525
526 if (__put_user(count, &request->count)
527 || __put_user(list, &request->list))
528 return -EFAULT;
529
ed8b6704 530 err = drm_ioctl(file, DRM_IOCTL_MAP_BUFS, (unsigned long)request);
9a186645
DA		 531 if (err)
532 return err;
533
534 if (__get_user(actual, &request->count))
535 return -EFAULT;
536 if (count >= actual)
537 for (i = 0; i < actual; ++i)
538 if (__copy_in_user(&list32[i], &list[i],
ff4135ae 539 offsetof(struct drm_buf_pub, address))
9a186645 540 || __get_user(addr, &list[i].address)
b5e89ed5 541 || __put_user((unsigned long)addr,
9a186645
DA		 542 &list32[i].address))
543 return -EFAULT;
544
545 if (__put_user(actual, &argp->count)
546 || __get_user(addr, &request->virtual)
b5e89ed5 547 || __put_user((unsigned long)addr, &argp->virtual))
9a186645
DA		 548 return -EFAULT;
549
550 return 0;
551}
552
553typedef struct drm_buf_free32 {
b5e89ed5
DA		 554 int count;
555 u32 list;
9a186645
DA		 556} drm_buf_free32_t;
557
558static int compat_drm_freebufs(struct file *file, unsigned int cmd,
559 unsigned long arg)
560{
561 drm_buf_free32_t req32;
ff4135ae 562 struct drm_buf_free __user *request;
9a186645
DA		 563 drm_buf_free32_t __user *argp = (void __user *)arg;
564
565 if (copy_from_user(&req32, argp, sizeof(req32)))
566 return -EFAULT;
567
568 request = compat_alloc_user_space(sizeof(*request));
1f96beec 569 if (!request)
9a186645
DA		 570 return -EFAULT;
571 if (__put_user(req32.count, &request->count)
b5e89ed5 572 || __put_user((int __user *)(unsigned long)req32.list,
9a186645
DA		 573 &request->list))
574 return -EFAULT;
575
ed8b6704 576 return drm_ioctl(file, DRM_IOCTL_FREE_BUFS, (unsigned long)request);
9a186645
DA		 577}
578
579typedef struct drm_ctx_priv_map32 {
b5e89ed5
DA		 580 unsigned int ctx_id; /**< Context requesting private mapping */
581 u32 handle; /**< Handle of map */
9a186645
DA		 582} drm_ctx_priv_map32_t;
583
584static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
585 unsigned long arg)
586{
587 drm_ctx_priv_map32_t req32;
ff4135ae 588 struct drm_ctx_priv_map __user *request;
9a186645
DA		 589 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
590
591 if (copy_from_user(&req32, argp, sizeof(req32)))
592 return -EFAULT;
593
594 request = compat_alloc_user_space(sizeof(*request));
1f96beec 595 if (!request)
9a186645
DA		 596 return -EFAULT;
597 if (__put_user(req32.ctx_id, &request->ctx_id)
b5e89ed5 598 || __put_user((void *)(unsigned long)req32.handle,
9a186645
DA		 599 &request->handle))
600 return -EFAULT;
601
ed8b6704 602 return drm_ioctl(file, DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
9a186645
DA		 603}
604
605static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
606 unsigned long arg)
607{
ff4135ae 608 struct drm_ctx_priv_map __user *request;
9a186645
DA		 609 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
610 int err;
611 unsigned int ctx_id;
612 void *handle;
613
614 if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp))
615 || __get_user(ctx_id, &argp->ctx_id))
616 return -EFAULT;
617
618 request = compat_alloc_user_space(sizeof(*request));
1f96beec 619 if (!request)
9a186645
DA		 620 return -EFAULT;
621 if (__put_user(ctx_id, &request->ctx_id))
622 return -EFAULT;
623
ed8b6704 624 err = drm_ioctl(file, DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
9a186645
DA		 625 if (err)
626 return err;
627
628 if (__get_user(handle, &request->handle)
b5e89ed5 629 || __put_user((unsigned long)handle, &argp->handle))
9a186645
DA		 630 return -EFAULT;
631
632 return 0;
633}
634
635typedef struct drm_ctx_res32 {
b5e89ed5
DA		 636 int count;
637 u32 contexts;
9a186645
DA		 638} drm_ctx_res32_t;
639
640static int compat_drm_resctx(struct file *file, unsigned int cmd,
641 unsigned long arg)
642{
643 drm_ctx_res32_t __user *argp = (void __user *)arg;
644 drm_ctx_res32_t res32;
ff4135ae 645 struct drm_ctx_res __user *res;
9a186645
DA		 646 int err;
647
648 if (copy_from_user(&res32, argp, sizeof(res32)))
649 return -EFAULT;
650
651 res = compat_alloc_user_space(sizeof(*res));
1f96beec 652 if (!res)
9a186645
DA		 653 return -EFAULT;
654 if (__put_user(res32.count, &res->count)
ff4135ae 655 || __put_user((struct drm_ctx __user *) (unsigned long)res32.contexts,
9a186645
DA		 656 &res->contexts))
657 return -EFAULT;
658
ed8b6704 659 err = drm_ioctl(file, DRM_IOCTL_RES_CTX, (unsigned long)res);
9a186645
DA		 660 if (err)
661 return err;
662
663 if (__get_user(res32.count, &res->count)
664 || __put_user(res32.count, &argp->count))
665 return -EFAULT;
666
667 return 0;
668}
669
670typedef struct drm_dma32 {
b5e89ed5
DA		 671 int context; /**< Context handle */
672 int send_count; /**< Number of buffers to send */
673 u32 send_indices; /**< List of handles to buffers */
674 u32 send_sizes; /**< Lengths of data to send */
ff4135ae 675 enum drm_dma_flags flags; /**< Flags */
b5e89ed5
DA		 676 int request_count; /**< Number of buffers requested */
677 int request_size; /**< Desired size for buffers */
678 u32 request_indices; /**< Buffer information */
679 u32 request_sizes;
680 int granted_count; /**< Number of buffers granted */
9a186645
DA		 681} drm_dma32_t;
682
683static int compat_drm_dma(struct file *file, unsigned int cmd,
684 unsigned long arg)
685{
686 drm_dma32_t d32;
b5e89ed5 687 drm_dma32_t __user *argp = (void __user *)arg;
ff4135ae 688 struct drm_dma __user *d;
9a186645
DA		 689 int err;
690
691 if (copy_from_user(&d32, argp, sizeof(d32)))
692 return -EFAULT;
693
694 d = compat_alloc_user_space(sizeof(*d));
1f96beec 695 if (!d)
9a186645
DA		 696 return -EFAULT;
697
698 if (__put_user(d32.context, &d->context)
699 || __put_user(d32.send_count, &d->send_count)
b5e89ed5 700 || __put_user((int __user *)(unsigned long)d32.send_indices,
9a186645 701 &d->send_indices)
b5e89ed5 702 || __put_user((int __user *)(unsigned long)d32.send_sizes,
9a186645
DA		 703 &d->send_sizes)
704 || __put_user(d32.flags, &d->flags)
705 || __put_user(d32.request_count, &d->request_count)
b5e89ed5 706 || __put_user((int __user *)(unsigned long)d32.request_indices,
9a186645 707 &d->request_indices)
b5e89ed5 708 || __put_user((int __user *)(unsigned long)d32.request_sizes,
9a186645
DA		 709 &d->request_sizes))
710 return -EFAULT;
711
ed8b6704 712 err = drm_ioctl(file, DRM_IOCTL_DMA, (unsigned long)d);
9a186645
DA		 713 if (err)
714 return err;
715
716 if (__get_user(d32.request_size, &d->request_size)
717 || __get_user(d32.granted_count, &d->granted_count)
718 || __put_user(d32.request_size, &argp->request_size)
719 || __put_user(d32.granted_count, &argp->granted_count))
720 return -EFAULT;
721
722 return 0;
723}
724
a7fb8a23 725#if IS_ENABLED(CONFIG_AGP)
9a186645
DA		 726typedef struct drm_agp_mode32 {
727 u32 mode; /**< AGP mode */
728} drm_agp_mode32_t;
729
730static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
731 unsigned long arg)
732{
733 drm_agp_mode32_t __user *argp = (void __user *)arg;
734 drm_agp_mode32_t m32;
ff4135ae 735 struct drm_agp_mode __user *mode;
9a186645
DA		 736
737 if (get_user(m32.mode, &argp->mode))
738 return -EFAULT;
739
740 mode = compat_alloc_user_space(sizeof(*mode));
741 if (put_user(m32.mode, &mode->mode))
742 return -EFAULT;
743
ed8b6704 744 return drm_ioctl(file, DRM_IOCTL_AGP_ENABLE, (unsigned long)mode);
9a186645
DA		 745}
746
747typedef struct drm_agp_info32 {
b5e89ed5
DA		 748 int agp_version_major;
749 int agp_version_minor;
750 u32 mode;
751 u32 aperture_base; /* physical address */
752 u32 aperture_size; /* bytes */
753 u32 memory_allowed; /* bytes */
754 u32 memory_used;
755
756 /* PCI information */
9a186645
DA		 757 unsigned short id_vendor;
758 unsigned short id_device;
759} drm_agp_info32_t;
760
761static int compat_drm_agp_info(struct file *file, unsigned int cmd,
762 unsigned long arg)
763{
764 drm_agp_info32_t __user *argp = (void __user *)arg;
765 drm_agp_info32_t i32;
ff4135ae 766 struct drm_agp_info __user *info;
9a186645
DA		 767 int err;
768
769 info = compat_alloc_user_space(sizeof(*info));
1f96beec 770 if (!info)
9a186645
DA		 771 return -EFAULT;
772
ed8b6704 773 err = drm_ioctl(file, DRM_IOCTL_AGP_INFO, (unsigned long)info);
9a186645
DA		 774 if (err)
775 return err;
776
777 if (__get_user(i32.agp_version_major, &info->agp_version_major)
778 || __get_user(i32.agp_version_minor, &info->agp_version_minor)
779 || __get_user(i32.mode, &info->mode)
780 || __get_user(i32.aperture_base, &info->aperture_base)
781 || __get_user(i32.aperture_size, &info->aperture_size)
782 || __get_user(i32.memory_allowed, &info->memory_allowed)
783 || __get_user(i32.memory_used, &info->memory_used)
784 || __get_user(i32.id_vendor, &info->id_vendor)
785 || __get_user(i32.id_device, &info->id_device))
786 return -EFAULT;
787
788 if (copy_to_user(argp, &i32, sizeof(i32)))
789 return -EFAULT;
790
791 return 0;
792}
793
794typedef struct drm_agp_buffer32 {
795 u32 size; /**< In bytes -- will round to page boundary */
796 u32 handle; /**< Used for binding / unbinding */
797 u32 type; /**< Type of memory to allocate */
b5e89ed5 798 u32 physical; /**< Physical used by i810 */
9a186645
DA		 799} drm_agp_buffer32_t;
800
801static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
802 unsigned long arg)
803{
804 drm_agp_buffer32_t __user *argp = (void __user *)arg;
805 drm_agp_buffer32_t req32;
ff4135ae 806 struct drm_agp_buffer __user *request;
9a186645
DA		 807 int err;
808
809 if (copy_from_user(&req32, argp, sizeof(req32)))
810 return -EFAULT;
811
812 request = compat_alloc_user_space(sizeof(*request));
1f96beec 813 if (!request
9a186645
DA		 814 || __put_user(req32.size, &request->size)
815 || __put_user(req32.type, &request->type))
816 return -EFAULT;
817
ed8b6704 818 err = drm_ioctl(file, DRM_IOCTL_AGP_ALLOC, (unsigned long)request);
9a186645
DA		 819 if (err)
820 return err;
821
822 if (__get_user(req32.handle, &request->handle)
823 || __get_user(req32.physical, &request->physical)
824 || copy_to_user(argp, &req32, sizeof(req32))) {
ed8b6704 825 drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
9a186645
DA		 826 return -EFAULT;
827 }
828
829 return 0;
830}
831
832static int compat_drm_agp_free(struct file *file, unsigned int cmd,
833 unsigned long arg)
834{
835 drm_agp_buffer32_t __user *argp = (void __user *)arg;
ff4135ae 836 struct drm_agp_buffer __user *request;
9a186645
DA		 837 u32 handle;
838
839 request = compat_alloc_user_space(sizeof(*request));
1f96beec 840 if (!request
9a186645
DA		 841 || get_user(handle, &argp->handle)
842 || __put_user(handle, &request->handle))
843 return -EFAULT;
844
ed8b6704 845 return drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
9a186645
DA		 846}
847
848typedef struct drm_agp_binding32 {
849 u32 handle; /**< From drm_agp_buffer */
850 u32 offset; /**< In bytes -- will round to page boundary */
851} drm_agp_binding32_t;
852
853static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
854 unsigned long arg)
855{
856 drm_agp_binding32_t __user *argp = (void __user *)arg;
857 drm_agp_binding32_t req32;
ff4135ae 858 struct drm_agp_binding __user *request;
9a186645
DA		 859
860 if (copy_from_user(&req32, argp, sizeof(req32)))
861 return -EFAULT;
862
863 request = compat_alloc_user_space(sizeof(*request));
1f96beec 864 if (!request
9a186645
DA		 865 || __put_user(req32.handle, &request->handle)
866 || __put_user(req32.offset, &request->offset))
867 return -EFAULT;
868
ed8b6704 869 return drm_ioctl(file, DRM_IOCTL_AGP_BIND, (unsigned long)request);
9a186645
DA		 870}
871
872static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
873 unsigned long arg)
874{
875 drm_agp_binding32_t __user *argp = (void __user *)arg;
ff4135ae 876 struct drm_agp_binding __user *request;
9a186645
DA		 877 u32 handle;
878
879 request = compat_alloc_user_space(sizeof(*request));
1f96beec 880 if (!request
9a186645
DA		 881 || get_user(handle, &argp->handle)
882 || __put_user(handle, &request->handle))
883 return -EFAULT;
884
ed8b6704 885 return drm_ioctl(file, DRM_IOCTL_AGP_UNBIND, (unsigned long)request);
9a186645 886}
a7fb8a23 887#endif /* CONFIG_AGP */
9a186645
DA		 888
889typedef struct drm_scatter_gather32 {
890 u32 size; /**< In bytes -- will round to page boundary */
891 u32 handle; /**< Used for mapping / unmapping */
892} drm_scatter_gather32_t;
893
894static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
895 unsigned long arg)
896{
897 drm_scatter_gather32_t __user *argp = (void __user *)arg;
ff4135ae 898 struct drm_scatter_gather __user *request;
9a186645
DA		 899 int err;
900 unsigned long x;
901
902 request = compat_alloc_user_space(sizeof(*request));
1f96beec 903 if (!request || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
9a186645
DA		 904 || __get_user(x, &argp->size)
905 || __put_user(x, &request->size))
906 return -EFAULT;
907
ed8b6704 908 err = drm_ioctl(file, DRM_IOCTL_SG_ALLOC, (unsigned long)request);
9a186645
DA		 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
920static 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;
ff4135ae 924 struct drm_scatter_gather __user *request;
9a186645
DA		 925 unsigned long x;
926
927 request = compat_alloc_user_space(sizeof(*request));
1f96beec 928 if (!request || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
9a186645
DA		 929 || __get_user(x, &argp->handle)
930 || __put_user(x << PAGE_SHIFT, &request->handle))
931 return -EFAULT;
932
ed8b6704 933 return drm_ioctl(file, DRM_IOCTL_SG_FREE, (unsigned long)request);
9a186645
DA		 934}
935
09e40d65 936#if defined(CONFIG_X86) || defined(CONFIG_IA64)
49568873
EA		 937typedef struct drm_update_draw32 {
938 drm_drawable_t handle;
939 unsigned int type;
940 unsigned int num;
941 /* 64-bit version has a 32-bit pad here */
942 u64 data; /**< Pointer */
943} __attribute__((packed)) drm_update_draw32_t;
944
945static int compat_drm_update_draw(struct file *file, unsigned int cmd,
946 unsigned long arg)
947{
948 drm_update_draw32_t update32;
949 struct drm_update_draw __user *request;
950 int err;
951
952 if (copy_from_user(&update32, (void __user *)arg, sizeof(update32)))
953 return -EFAULT;
954
955 request = compat_alloc_user_space(sizeof(*request));
1f96beec 956 if (!request ||
49568873
EA		 957 __put_user(update32.handle, &request->handle) ||
958 __put_user(update32.type, &request->type) ||
959 __put_user(update32.num, &request->num) ||
960 __put_user(update32.data, &request->data))
961 return -EFAULT;
962
ed8b6704 963 err = drm_ioctl(file, DRM_IOCTL_UPDATE_DRAW, (unsigned long)request);
49568873
EA		 964 return err;
965}
09e40d65 966#endif
49568873 967
9a186645 968struct drm_wait_vblank_request32 {
ff4135ae 969 enum drm_vblank_seq_type type;
9a186645
DA		 970 unsigned int sequence;
971 u32 signal;
972};
973
974struct drm_wait_vblank_reply32 {
ff4135ae 975 enum drm_vblank_seq_type type;
9a186645
DA		 976 unsigned int sequence;
977 s32 tval_sec;
978 s32 tval_usec;
979};
980
981typedef union drm_wait_vblank32 {
982 struct drm_wait_vblank_request32 request;
983 struct drm_wait_vblank_reply32 reply;
984} drm_wait_vblank32_t;
985
986static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
987 unsigned long arg)
988{
989 drm_wait_vblank32_t __user *argp = (void __user *)arg;
990 drm_wait_vblank32_t req32;
ff4135ae 991 union drm_wait_vblank __user *request;
9a186645
DA		 992 int err;
993
994 if (copy_from_user(&req32, argp, sizeof(req32)))
995 return -EFAULT;
996
997 request = compat_alloc_user_space(sizeof(*request));
1f96beec 998 if (!request
9a186645
DA		 999 || __put_user(req32.request.type, &request->request.type)
1000 || __put_user(req32.request.sequence, &request->request.sequence)
1001 || __put_user(req32.request.signal, &request->request.signal))
1002 return -EFAULT;
1003
ed8b6704 1004 err = drm_ioctl(file, DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
9a186645
DA		 1005 if (err)
1006 return err;
1007
1008 if (__get_user(req32.reply.type, &request->reply.type)
1009 || __get_user(req32.reply.sequence, &request->reply.sequence)
1010 || __get_user(req32.reply.tval_sec, &request->reply.tval_sec)
1011 || __get_user(req32.reply.tval_usec, &request->reply.tval_usec))
1012 return -EFAULT;
1013
1014 if (copy_to_user(argp, &req32, sizeof(req32)))
1015 return -EFAULT;
1016
1017 return 0;
1018}
1019
a988588b 1020#if defined(CONFIG_X86) || defined(CONFIG_IA64)
c631d5f9
TU		 1021typedef 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
1033static 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}
a988588b 1077#endif
c631d5f9 1078
9f43e542
AV		 1079static struct {
1080 drm_ioctl_compat_t *fn;
1081 char *name;
1082} drm_compat_ioctls[] = {
ff22ff9e 1083#define DRM_IOCTL32_DEF(n, f) [DRM_IOCTL_NR(n##32)] = {.fn = f, .name = #n}
9f43e542
AV		 1084 [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)].fn = compat_drm_version,
1085 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)].fn = compat_drm_getunique,
1086 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)].fn = compat_drm_getmap,
1087 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)].fn = compat_drm_getclient,
1088 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)].fn = compat_drm_getstats,
1089 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)].fn = compat_drm_setunique,
1090 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)].fn = compat_drm_addmap,
ff22ff9e 1091 DRM_IOCTL32_DEF(DRM_IOCTL_ADD_BUFS, compat_drm_addbufs),
9f43e542
AV		 1092 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)].fn = compat_drm_markbufs,
1093 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)].fn = compat_drm_infobufs,
1094 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)].fn = compat_drm_mapbufs,
1095 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)].fn = compat_drm_freebufs,
1096 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)].fn = compat_drm_rmmap,
1097 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)].fn = compat_drm_setsareactx,
1098 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)].fn = compat_drm_getsareactx,
1099 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)].fn = compat_drm_resctx,
1100 [DRM_IOCTL_NR(DRM_IOCTL_DMA32)].fn = compat_drm_dma,
a7fb8a23 1101#if IS_ENABLED(CONFIG_AGP)
9f43e542
AV		 1102 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)].fn = compat_drm_agp_enable,
1103 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)].fn = compat_drm_agp_info,
1104 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)].fn = compat_drm_agp_alloc,
1105 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)].fn = compat_drm_agp_free,
1106 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)].fn = compat_drm_agp_bind,
1107 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)].fn = compat_drm_agp_unbind,
9a186645 1108#endif
9f43e542
AV		 1109 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)].fn = compat_drm_sg_alloc,
1110 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)].fn = compat_drm_sg_free,
09e40d65 1111#if defined(CONFIG_X86) || defined(CONFIG_IA64)
9f43e542 1112 [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)].fn = compat_drm_update_draw,
09e40d65 1113#endif
9f43e542 1114 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)].fn = compat_drm_wait_vblank,
a988588b 1115#if defined(CONFIG_X86) || defined(CONFIG_IA64)
9f43e542 1116 [DRM_IOCTL_NR(DRM_IOCTL_MODE_ADDFB232)].fn = compat_drm_mode_addfb2,
a988588b 1117#endif
9a186645
DA		 1118};
1119
1120/**
2640981f
DV		 1121 * drm_compat_ioctl - 32bit IOCTL compatibility handler for DRM drivers
1122 * @filp: file this ioctl is called on
1123 * @cmd: ioctl cmd number
1124 * @arg: user argument
1125 *
1126 * Compatibility handler for 32 bit userspace running on 64 kernels. All actual
1127 * IOCTL handling is forwarded to drm_ioctl(), while marshalling structures as
1128 * appropriate. Note that this only handles DRM core IOCTLs, if the driver has
1129 * botched IOCTL itself, it must handle those by wrapping this function.
9a186645 1130 *
2640981f
DV		 1131 * Returns:
1132 * Zero on success, negative error code on failure.
9a186645
DA		 1133 */
1134long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1135{
1136 unsigned int nr = DRM_IOCTL_NR(cmd);
1137 drm_ioctl_compat_t *fn;
1138 int ret;
1139
7ffa05e0
IR		 1140 /* Assume that ioctls without an explicit compat routine will just
1141 * work. This may not always be a good assumption, but it's better
1142 * than always failing.
1143 */
3d77461e 1144 if (nr >= ARRAY_SIZE(drm_compat_ioctls))
ed8b6704 1145 return drm_ioctl(filp, cmd, arg);
9a186645 1146
9f43e542
AV		 1147 fn = drm_compat_ioctls[nr].fn;
1148 if (!fn)
1149 return drm_ioctl(filp, cmd, arg);
9a186645 1150
9f43e542
AV		 1151 if (drm_compat_ioctls[nr].name) {
1152 struct drm_file *file_priv = filp->private_data;
1153 DRM_DEBUG("pid=%d, dev=0x%lx, auth=%d, %s\n",
1154 task_pid_nr(current),
1155 (long)old_encode_dev(file_priv->minor->kdev->devt),
1156 file_priv->authenticated,
1157 drm_compat_ioctls[nr].name);
b5e89ed5 1158 ret = (*fn) (filp, cmd, arg);
9f43e542
AV		 1159 if (ret)
1160 DRM_DEBUG("ret = %d\n", ret);
1161 } else {
1162 ret = (*fn) (filp, cmd, arg);
1163 }
9a186645
DA		 1164 return ret;
1165}
1166EXPORT_SYMBOL(drm_compat_ioctl);
Linux 6.x block layer and io_uring tree(s)