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switch compat_drm_getclient() 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"
012c6741 36#include "drm_internal.h"
9a186645
DA		 37
38#define DRM_IOCTL_VERSION32 DRM_IOWR(0x00, drm_version32_t)
39#define DRM_IOCTL_GET_UNIQUE32 DRM_IOWR(0x01, drm_unique32_t)
40#define DRM_IOCTL_GET_MAP32 DRM_IOWR(0x04, drm_map32_t)
41#define DRM_IOCTL_GET_CLIENT32 DRM_IOWR(0x05, drm_client32_t)
42#define DRM_IOCTL_GET_STATS32 DRM_IOR( 0x06, drm_stats32_t)
43
44#define DRM_IOCTL_SET_UNIQUE32 DRM_IOW( 0x10, drm_unique32_t)
45#define DRM_IOCTL_ADD_MAP32 DRM_IOWR(0x15, drm_map32_t)
46#define DRM_IOCTL_ADD_BUFS32 DRM_IOWR(0x16, drm_buf_desc32_t)
47#define DRM_IOCTL_MARK_BUFS32 DRM_IOW( 0x17, drm_buf_desc32_t)
48#define DRM_IOCTL_INFO_BUFS32 DRM_IOWR(0x18, drm_buf_info32_t)
49#define DRM_IOCTL_MAP_BUFS32 DRM_IOWR(0x19, drm_buf_map32_t)
50#define DRM_IOCTL_FREE_BUFS32 DRM_IOW( 0x1a, drm_buf_free32_t)
51
52#define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t)
53
54#define DRM_IOCTL_SET_SAREA_CTX32 DRM_IOW( 0x1c, drm_ctx_priv_map32_t)
55#define DRM_IOCTL_GET_SAREA_CTX32 DRM_IOWR(0x1d, drm_ctx_priv_map32_t)
56
57#define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t)
58#define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t)
59
60#define DRM_IOCTL_AGP_ENABLE32 DRM_IOW( 0x32, drm_agp_mode32_t)
61#define DRM_IOCTL_AGP_INFO32 DRM_IOR( 0x33, drm_agp_info32_t)
62#define DRM_IOCTL_AGP_ALLOC32 DRM_IOWR(0x34, drm_agp_buffer32_t)
63#define DRM_IOCTL_AGP_FREE32 DRM_IOW( 0x35, drm_agp_buffer32_t)
64#define DRM_IOCTL_AGP_BIND32 DRM_IOW( 0x36, drm_agp_binding32_t)
65#define DRM_IOCTL_AGP_UNBIND32 DRM_IOW( 0x37, drm_agp_binding32_t)
66
67#define DRM_IOCTL_SG_ALLOC32 DRM_IOW( 0x38, drm_scatter_gather32_t)
68#define DRM_IOCTL_SG_FREE32 DRM_IOW( 0x39, drm_scatter_gather32_t)
69
49568873
EA		 70#define DRM_IOCTL_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t)
71
9a186645
DA		 72#define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
73
c631d5f9
TU		 74#define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, drm_mode_fb_cmd232_t)
75
9a186645 76typedef struct drm_version_32 {
2640981f
DV		 77 int version_major; /* Major version */
78 int version_minor; /* Minor version */
79 int version_patchlevel; /* Patch level */
80 u32 name_len; /* Length of name buffer */
81 u32 name; /* Name of driver */
82 u32 date_len; /* Length of date buffer */
83 u32 date; /* User-space buffer to hold date */
84 u32 desc_len; /* Length of desc buffer */
85 u32 desc; /* User-space buffer to hold desc */
9a186645
DA		 86} drm_version32_t;
87
88static int compat_drm_version(struct file *file, unsigned int cmd,
89 unsigned long arg)
90{
91 drm_version32_t v32;
012c6741 92 struct drm_version v;
9a186645
DA		 93 int err;
94
b5e89ed5 95 if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
9a186645
DA		 96 return -EFAULT;
97
012c6741
AV		 98 v = (struct drm_version) {
99 .name_len = v32.name_len,
100 .name = compat_ptr(v32.name),
101 .date_len = v32.date_len,
102 .date = compat_ptr(v32.date),
103 .desc_len = v32.desc_len,
104 .desc = compat_ptr(v32.desc),
105 };
106 err = drm_ioctl_kernel(file, drm_version, &v,
107 DRM_UNLOCKED|DRM_RENDER_ALLOW|DRM_CONTROL_ALLOW);
9a186645
DA		 108 if (err)
109 return err;
110
012c6741
AV		 111 v32.version_major = v.version_major;
112 v32.version_minor = v.version_minor;
113 v32.version_patchlevel = v.version_patchlevel;
b5e89ed5 114 if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
9a186645
DA		 115 return -EFAULT;
116 return 0;
117}
118
119typedef struct drm_unique32 {
2640981f
DV		 120 u32 unique_len; /* Length of unique */
121 u32 unique; /* Unique name for driver instantiation */
9a186645
DA		 122} drm_unique32_t;
123
124static int compat_drm_getunique(struct file *file, unsigned int cmd,
125 unsigned long arg)
126{
127 drm_unique32_t uq32;
17e3dade 128 struct drm_unique uq;
9a186645
DA		 129 int err;
130
b5e89ed5 131 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
9a186645 132 return -EFAULT;
17e3dade
AV		 133 uq = (struct drm_unique){
134 .unique_len = uq32.unique_len,
135 .unique = compat_ptr(uq32.unique),
136 };
9a186645 137
17e3dade 138 err = drm_ioctl_kernel(file, drm_getunique, &uq, DRM_UNLOCKED);
9a186645
DA		 139 if (err)
140 return err;
141
17e3dade 142 uq32.unique_len = uq.unique_len;
b5e89ed5 143 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
9a186645
DA		 144 return -EFAULT;
145 return 0;
146}
147
148static int compat_drm_setunique(struct file *file, unsigned int cmd,
149 unsigned long arg)
150{
56c275cc
AV		 151 /* it's dead */
152 return -EINVAL;
9a186645
DA		 153}
154
155typedef struct drm_map32 {
2640981f
DV		 156 u32 offset; /* Requested physical address (0 for SAREA) */
157 u32 size; /* Requested physical size (bytes) */
158 enum drm_map_type type; /* Type of memory to map */
159 enum drm_map_flags flags; /* Flags */
160 u32 handle; /* User-space: "Handle" to pass to mmap() */
161 int mtrr; /* MTRR slot used */
9a186645
DA		 162} drm_map32_t;
163
164static int compat_drm_getmap(struct file *file, unsigned int cmd,
165 unsigned long arg)
166{
167 drm_map32_t __user *argp = (void __user *)arg;
168 drm_map32_t m32;
8c4fe499
AV		 169 struct drm_map map;
170 int err;
9a186645 171
8c4fe499 172 if (copy_from_user(&m32, argp, sizeof(m32)))
9a186645
DA		 173 return -EFAULT;
174
8c4fe499
AV		 175 map.offset = m32.offset;
176 err = drm_ioctl_kernel(file, drm_legacy_getmap_ioctl, &map, DRM_UNLOCKED);
9a186645
DA		 177 if (err)
178 return err;
179
8c4fe499
AV		 180 m32.offset = map.offset;
181 m32.size = map.size;
182 m32.type = map.type;
183 m32.flags = map.flags;
184 m32.handle = ptr_to_compat(map.handle);
185 m32.mtrr = map.mtrr;
9a186645
DA		 186 if (copy_to_user(argp, &m32, sizeof(m32)))
187 return -EFAULT;
188 return 0;
189
190}
191
192static int compat_drm_addmap(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 err;
199 void *handle;
200
201 if (copy_from_user(&m32, argp, sizeof(m32)))
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(m32.offset, &map->offset)
208 || __put_user(m32.size, &map->size)
209 || __put_user(m32.type, &map->type)
210 || __put_user(m32.flags, &map->flags))
211 return -EFAULT;
212
ed8b6704 213 err = drm_ioctl(file, DRM_IOCTL_ADD_MAP, (unsigned long)map);
9a186645
DA		 214 if (err)
215 return err;
216
217 if (__get_user(m32.offset, &map->offset)
218 || __get_user(m32.mtrr, &map->mtrr)
219 || __get_user(handle, &map->handle))
220 return -EFAULT;
221
b5e89ed5 222 m32.handle = (unsigned long)handle;
cafe8d84 223 if (m32.handle != (unsigned long)handle)
499447db 224 pr_err_ratelimited("compat_drm_addmap truncated handle %p for type %d offset %x\n",
cafe8d84 225 handle, m32.type, m32.offset);
9a186645
DA		 226
227 if (copy_to_user(argp, &m32, sizeof(m32)))
228 return -EFAULT;
229
230 return 0;
231}
232
233static int compat_drm_rmmap(struct file *file, unsigned int cmd,
234 unsigned long arg)
235{
236 drm_map32_t __user *argp = (void __user *)arg;
ff4135ae 237 struct drm_map __user *map;
9a186645
DA		 238 u32 handle;
239
240 if (get_user(handle, &argp->handle))
241 return -EFAULT;
242
243 map = compat_alloc_user_space(sizeof(*map));
1f96beec 244 if (!map)
9a186645 245 return -EFAULT;
b5e89ed5 246 if (__put_user((void *)(unsigned long)handle, &map->handle))
9a186645
DA		 247 return -EFAULT;
248
ed8b6704 249 return drm_ioctl(file, DRM_IOCTL_RM_MAP, (unsigned long)map);
9a186645
DA		 250}
251
252typedef struct drm_client32 {
2640981f
DV		 253 int idx; /* Which client desired? */
254 int auth; /* Is client authenticated? */
255 u32 pid; /* Process ID */
256 u32 uid; /* User ID */
257 u32 magic; /* Magic */
258 u32 iocs; /* Ioctl count */
9a186645
DA		 259} drm_client32_t;
260
261static int compat_drm_getclient(struct file *file, unsigned int cmd,
262 unsigned long arg)
263{
264 drm_client32_t c32;
265 drm_client32_t __user *argp = (void __user *)arg;
9e92662d
AV		 266 struct drm_client client;
267 int err;
9a186645 268
9e92662d 269 if (copy_from_user(&c32, argp, sizeof(c32)))
9a186645
DA		 270 return -EFAULT;
271
9e92662d 272 client.idx = c32.idx;
9a186645 273
9e92662d 274 err = drm_ioctl_kernel(file, drm_getclient, &client, DRM_UNLOCKED);
9a186645
DA		 275 if (err)
276 return err;
277
9e92662d
AV		 278 c32.idx = client.idx;
279 c32.auth = client.auth;
280 c32.pid = client.pid;
281 c32.uid = client.uid;
282 c32.magic = client.magic;
283 c32.iocs = client.iocs;
9a186645
DA		 284
285 if (copy_to_user(argp, &c32, sizeof(c32)))
286 return -EFAULT;
287 return 0;
288}
289
290typedef struct drm_stats32 {
291 u32 count;
292 struct {
293 u32 value;
ff4135ae 294 enum drm_stat_type type;
9a186645
DA		 295 } data[15];
296} drm_stats32_t;
297
298static int compat_drm_getstats(struct file *file, unsigned int cmd,
299 unsigned long arg)
300{
301 drm_stats32_t s32;
302 drm_stats32_t __user *argp = (void __user *)arg;
ff4135ae 303 struct drm_stats __user *stats;
9a186645
DA		 304 int i, err;
305
ec913f31 306 memset(&s32, 0, sizeof(drm_stats32_t));
9a186645 307 stats = compat_alloc_user_space(sizeof(*stats));
1f96beec 308 if (!stats)
9a186645
DA		 309 return -EFAULT;
310
ed8b6704 311 err = drm_ioctl(file, DRM_IOCTL_GET_STATS, (unsigned long)stats);
9a186645
DA		 312 if (err)
313 return err;
314
315 if (__get_user(s32.count, &stats->count))
316 return -EFAULT;
317 for (i = 0; i < 15; ++i)
318 if (__get_user(s32.data[i].value, &stats->data[i].value)
319 || __get_user(s32.data[i].type, &stats->data[i].type))
320 return -EFAULT;
321
322 if (copy_to_user(argp, &s32, sizeof(s32)))
323 return -EFAULT;
324 return 0;
325}
326
327typedef struct drm_buf_desc32 {
2640981f
DV		 328 int count; /* Number of buffers of this size */
329 int size; /* Size in bytes */
330 int low_mark; /* Low water mark */
331 int high_mark; /* High water mark */
b5e89ed5 332 int flags;
2640981f 333 u32 agp_start; /* Start address in the AGP aperture */
9a186645
DA		 334} drm_buf_desc32_t;
335
336static int compat_drm_addbufs(struct file *file, unsigned int cmd,
337 unsigned long arg)
338{
339 drm_buf_desc32_t __user *argp = (void __user *)arg;
ff22ff9e
AV		 340 drm_buf_desc32_t desc32;
341 struct drm_buf_desc desc;
9a186645 342 int err;
9a186645 343
ff22ff9e 344 if (copy_from_user(&desc32, argp, sizeof(drm_buf_desc32_t)))
9a186645
DA		 345 return -EFAULT;
346
ff22ff9e
AV		 347 desc = (struct drm_buf_desc){
348 desc32.count, desc32.size, desc32.low_mark, desc32.high_mark,
349 desc32.flags, desc32.agp_start
350 };
9a186645 351
ff22ff9e
AV		 352 err = drm_ioctl_kernel(file, drm_legacy_addbufs, &desc,
353 DRM_AUTH|DRM_MASTER|DRM_ROOT_ONLY);
9a186645
DA		 354 if (err)
355 return err;
356
ff22ff9e
AV		 357 desc32 = (drm_buf_desc32_t){
358 desc.count, desc.size, desc.low_mark, desc.high_mark,
359 desc.flags, desc.agp_start
360 };
361 if (copy_to_user(argp, &desc32, sizeof(drm_buf_desc32_t)))
9a186645
DA		 362 return -EFAULT;
363
364 return 0;
365}
366
367static int compat_drm_markbufs(struct file *file, unsigned int cmd,
368 unsigned long arg)
369{
370 drm_buf_desc32_t b32;
371 drm_buf_desc32_t __user *argp = (void __user *)arg;
ff4135ae 372 struct drm_buf_desc __user *buf;
9a186645
DA		 373
374 if (copy_from_user(&b32, argp, sizeof(b32)))
375 return -EFAULT;
376
377 buf = compat_alloc_user_space(sizeof(*buf));
1f96beec 378 if (!buf)
9a186645
DA		 379 return -EFAULT;
380
381 if (__put_user(b32.size, &buf->size)
382 || __put_user(b32.low_mark, &buf->low_mark)
383 || __put_user(b32.high_mark, &buf->high_mark))
384 return -EFAULT;
385
ed8b6704 386 return drm_ioctl(file, DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
9a186645
DA		 387}
388
389typedef struct drm_buf_info32 {
b5e89ed5
DA		 390 int count; /**< Entries in list */
391 u32 list;
9a186645
DA		 392} drm_buf_info32_t;
393
5c7640ab
AV		 394static int copy_one_buf32(void *data, int count, struct drm_buf_entry *from)
395{
396 drm_buf_info32_t *request = data;
397 drm_buf_desc32_t __user *to = compat_ptr(request->list);
398 drm_buf_desc32_t v = {.count = from->buf_count,
399 .size = from->buf_size,
400 .low_mark = from->low_mark,
401 .high_mark = from->high_mark};
402 return copy_to_user(to + count, &v, offsetof(drm_buf_desc32_t, flags));
403}
404
405static int drm_legacy_infobufs32(struct drm_device *dev, void *data,
406 struct drm_file *file_priv)
407{
408 drm_buf_info32_t *request = data;
409 return __drm_legacy_infobufs(dev, data, &request->count, copy_one_buf32);
410}
411
9a186645
DA		 412static int compat_drm_infobufs(struct file *file, unsigned int cmd,
413 unsigned long arg)
414{
415 drm_buf_info32_t req32;
416 drm_buf_info32_t __user *argp = (void __user *)arg;
5c7640ab 417 int err;
9a186645
DA		 418
419 if (copy_from_user(&req32, argp, sizeof(req32)))
420 return -EFAULT;
421
5c7640ab
AV		 422 if (req32.count < 0)
423 req32.count = 0;
9a186645 424
5c7640ab 425 err = drm_ioctl_kernel(file, drm_legacy_infobufs32, &req32, DRM_AUTH);
9a186645
DA		 426 if (err)
427 return err;
428
5c7640ab 429 if (put_user(req32.count, &argp->count))
9a186645
DA		 430 return -EFAULT;
431
432 return 0;
433}
434
435typedef struct drm_buf_pub32 {
b5e89ed5
DA		 436 int idx; /**< Index into the master buffer list */
437 int total; /**< Buffer size */
438 int used; /**< Amount of buffer in use (for DMA) */
439 u32 address; /**< Address of buffer */
9a186645
DA		 440} drm_buf_pub32_t;
441
442typedef struct drm_buf_map32 {
b5e89ed5
DA		 443 int count; /**< Length of the buffer list */
444 u32 virtual; /**< Mmap'd area in user-virtual */
445 u32 list; /**< Buffer information */
9a186645
DA		 446} drm_buf_map32_t;
447
448static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
449 unsigned long arg)
450{
451 drm_buf_map32_t __user *argp = (void __user *)arg;
452 drm_buf_map32_t req32;
453 drm_buf_pub32_t __user *list32;
ff4135ae
DA		 454 struct drm_buf_map __user *request;
455 struct drm_buf_pub __user *list;
9a186645
DA		 456 int i, err;
457 int count, actual;
458 size_t nbytes;
459 void __user *addr;
460
461 if (copy_from_user(&req32, argp, sizeof(req32)))
462 return -EFAULT;
463 count = req32.count;
464 list32 = (void __user *)(unsigned long)req32.list;
465
466 if (count < 0)
467 return -EINVAL;
ff4135ae 468 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub);
9a186645 469 request = compat_alloc_user_space(nbytes);
1f96beec 470 if (!request)
9a186645 471 return -EFAULT;
ff4135ae 472 list = (struct drm_buf_pub *) (request + 1);
9a186645
DA		 473
474 if (__put_user(count, &request->count)
475 || __put_user(list, &request->list))
476 return -EFAULT;
477
ed8b6704 478 err = drm_ioctl(file, DRM_IOCTL_MAP_BUFS, (unsigned long)request);
9a186645
DA		 479 if (err)
480 return err;
481
482 if (__get_user(actual, &request->count))
483 return -EFAULT;
484 if (count >= actual)
485 for (i = 0; i < actual; ++i)
486 if (__copy_in_user(&list32[i], &list[i],
ff4135ae 487 offsetof(struct drm_buf_pub, address))
9a186645 488 || __get_user(addr, &list[i].address)
b5e89ed5 489 || __put_user((unsigned long)addr,
9a186645
DA		 490 &list32[i].address))
491 return -EFAULT;
492
493 if (__put_user(actual, &argp->count)
494 || __get_user(addr, &request->virtual)
b5e89ed5 495 || __put_user((unsigned long)addr, &argp->virtual))
9a186645
DA		 496 return -EFAULT;
497
498 return 0;
499}
500
501typedef struct drm_buf_free32 {
b5e89ed5
DA		 502 int count;
503 u32 list;
9a186645
DA		 504} drm_buf_free32_t;
505
506static int compat_drm_freebufs(struct file *file, unsigned int cmd,
507 unsigned long arg)
508{
509 drm_buf_free32_t req32;
ff4135ae 510 struct drm_buf_free __user *request;
9a186645
DA		 511 drm_buf_free32_t __user *argp = (void __user *)arg;
512
513 if (copy_from_user(&req32, argp, sizeof(req32)))
514 return -EFAULT;
515
516 request = compat_alloc_user_space(sizeof(*request));
1f96beec 517 if (!request)
9a186645
DA		 518 return -EFAULT;
519 if (__put_user(req32.count, &request->count)
b5e89ed5 520 || __put_user((int __user *)(unsigned long)req32.list,
9a186645
DA		 521 &request->list))
522 return -EFAULT;
523
ed8b6704 524 return drm_ioctl(file, DRM_IOCTL_FREE_BUFS, (unsigned long)request);
9a186645
DA		 525}
526
527typedef struct drm_ctx_priv_map32 {
b5e89ed5
DA		 528 unsigned int ctx_id; /**< Context requesting private mapping */
529 u32 handle; /**< Handle of map */
9a186645
DA		 530} drm_ctx_priv_map32_t;
531
532static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
533 unsigned long arg)
534{
535 drm_ctx_priv_map32_t req32;
ff4135ae 536 struct drm_ctx_priv_map __user *request;
9a186645
DA		 537 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
538
539 if (copy_from_user(&req32, argp, sizeof(req32)))
540 return -EFAULT;
541
542 request = compat_alloc_user_space(sizeof(*request));
1f96beec 543 if (!request)
9a186645
DA		 544 return -EFAULT;
545 if (__put_user(req32.ctx_id, &request->ctx_id)
b5e89ed5 546 || __put_user((void *)(unsigned long)req32.handle,
9a186645
DA		 547 &request->handle))
548 return -EFAULT;
549
ed8b6704 550 return drm_ioctl(file, DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
9a186645
DA		 551}
552
553static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
554 unsigned long arg)
555{
ff4135ae 556 struct drm_ctx_priv_map __user *request;
9a186645
DA		 557 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
558 int err;
559 unsigned int ctx_id;
560 void *handle;
561
562 if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp))
563 || __get_user(ctx_id, &argp->ctx_id))
564 return -EFAULT;
565
566 request = compat_alloc_user_space(sizeof(*request));
1f96beec 567 if (!request)
9a186645
DA		 568 return -EFAULT;
569 if (__put_user(ctx_id, &request->ctx_id))
570 return -EFAULT;
571
ed8b6704 572 err = drm_ioctl(file, DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
9a186645
DA		 573 if (err)
574 return err;
575
576 if (__get_user(handle, &request->handle)
b5e89ed5 577 || __put_user((unsigned long)handle, &argp->handle))
9a186645
DA		 578 return -EFAULT;
579
580 return 0;
581}
582
583typedef struct drm_ctx_res32 {
b5e89ed5
DA		 584 int count;
585 u32 contexts;
9a186645
DA		 586} drm_ctx_res32_t;
587
588static int compat_drm_resctx(struct file *file, unsigned int cmd,
589 unsigned long arg)
590{
591 drm_ctx_res32_t __user *argp = (void __user *)arg;
592 drm_ctx_res32_t res32;
ff4135ae 593 struct drm_ctx_res __user *res;
9a186645
DA		 594 int err;
595
596 if (copy_from_user(&res32, argp, sizeof(res32)))
597 return -EFAULT;
598
599 res = compat_alloc_user_space(sizeof(*res));
1f96beec 600 if (!res)
9a186645
DA		 601 return -EFAULT;
602 if (__put_user(res32.count, &res->count)
ff4135ae 603 || __put_user((struct drm_ctx __user *) (unsigned long)res32.contexts,
9a186645
DA		 604 &res->contexts))
605 return -EFAULT;
606
ed8b6704 607 err = drm_ioctl(file, DRM_IOCTL_RES_CTX, (unsigned long)res);
9a186645
DA		 608 if (err)
609 return err;
610
611 if (__get_user(res32.count, &res->count)
612 || __put_user(res32.count, &argp->count))
613 return -EFAULT;
614
615 return 0;
616}
617
618typedef struct drm_dma32 {
b5e89ed5
DA		 619 int context; /**< Context handle */
620 int send_count; /**< Number of buffers to send */
621 u32 send_indices; /**< List of handles to buffers */
622 u32 send_sizes; /**< Lengths of data to send */
ff4135ae 623 enum drm_dma_flags flags; /**< Flags */
b5e89ed5
DA		 624 int request_count; /**< Number of buffers requested */
625 int request_size; /**< Desired size for buffers */
626 u32 request_indices; /**< Buffer information */
627 u32 request_sizes;
628 int granted_count; /**< Number of buffers granted */
9a186645
DA		 629} drm_dma32_t;
630
631static int compat_drm_dma(struct file *file, unsigned int cmd,
632 unsigned long arg)
633{
634 drm_dma32_t d32;
b5e89ed5 635 drm_dma32_t __user *argp = (void __user *)arg;
ff4135ae 636 struct drm_dma __user *d;
9a186645
DA		 637 int err;
638
639 if (copy_from_user(&d32, argp, sizeof(d32)))
640 return -EFAULT;
641
642 d = compat_alloc_user_space(sizeof(*d));
1f96beec 643 if (!d)
9a186645
DA		 644 return -EFAULT;
645
646 if (__put_user(d32.context, &d->context)
647 || __put_user(d32.send_count, &d->send_count)
b5e89ed5 648 || __put_user((int __user *)(unsigned long)d32.send_indices,
9a186645 649 &d->send_indices)
b5e89ed5 650 || __put_user((int __user *)(unsigned long)d32.send_sizes,
9a186645
DA		 651 &d->send_sizes)
652 || __put_user(d32.flags, &d->flags)
653 || __put_user(d32.request_count, &d->request_count)
b5e89ed5 654 || __put_user((int __user *)(unsigned long)d32.request_indices,
9a186645 655 &d->request_indices)
b5e89ed5 656 || __put_user((int __user *)(unsigned long)d32.request_sizes,
9a186645
DA		 657 &d->request_sizes))
658 return -EFAULT;
659
ed8b6704 660 err = drm_ioctl(file, DRM_IOCTL_DMA, (unsigned long)d);
9a186645
DA		 661 if (err)
662 return err;
663
664 if (__get_user(d32.request_size, &d->request_size)
665 || __get_user(d32.granted_count, &d->granted_count)
666 || __put_user(d32.request_size, &argp->request_size)
667 || __put_user(d32.granted_count, &argp->granted_count))
668 return -EFAULT;
669
670 return 0;
671}
672
a7fb8a23 673#if IS_ENABLED(CONFIG_AGP)
9a186645
DA		 674typedef struct drm_agp_mode32 {
675 u32 mode; /**< AGP mode */
676} drm_agp_mode32_t;
677
678static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
679 unsigned long arg)
680{
681 drm_agp_mode32_t __user *argp = (void __user *)arg;
682 drm_agp_mode32_t m32;
ff4135ae 683 struct drm_agp_mode __user *mode;
9a186645
DA		 684
685 if (get_user(m32.mode, &argp->mode))
686 return -EFAULT;
687
688 mode = compat_alloc_user_space(sizeof(*mode));
689 if (put_user(m32.mode, &mode->mode))
690 return -EFAULT;
691
ed8b6704 692 return drm_ioctl(file, DRM_IOCTL_AGP_ENABLE, (unsigned long)mode);
9a186645
DA		 693}
694
695typedef struct drm_agp_info32 {
b5e89ed5
DA		 696 int agp_version_major;
697 int agp_version_minor;
698 u32 mode;
699 u32 aperture_base; /* physical address */
700 u32 aperture_size; /* bytes */
701 u32 memory_allowed; /* bytes */
702 u32 memory_used;
703
704 /* PCI information */
9a186645
DA		 705 unsigned short id_vendor;
706 unsigned short id_device;
707} drm_agp_info32_t;
708
709static int compat_drm_agp_info(struct file *file, unsigned int cmd,
710 unsigned long arg)
711{
712 drm_agp_info32_t __user *argp = (void __user *)arg;
713 drm_agp_info32_t i32;
ff4135ae 714 struct drm_agp_info __user *info;
9a186645
DA		 715 int err;
716
717 info = compat_alloc_user_space(sizeof(*info));
1f96beec 718 if (!info)
9a186645
DA		 719 return -EFAULT;
720
ed8b6704 721 err = drm_ioctl(file, DRM_IOCTL_AGP_INFO, (unsigned long)info);
9a186645
DA		 722 if (err)
723 return err;
724
725 if (__get_user(i32.agp_version_major, &info->agp_version_major)
726 || __get_user(i32.agp_version_minor, &info->agp_version_minor)
727 || __get_user(i32.mode, &info->mode)
728 || __get_user(i32.aperture_base, &info->aperture_base)
729 || __get_user(i32.aperture_size, &info->aperture_size)
730 || __get_user(i32.memory_allowed, &info->memory_allowed)
731 || __get_user(i32.memory_used, &info->memory_used)
732 || __get_user(i32.id_vendor, &info->id_vendor)
733 || __get_user(i32.id_device, &info->id_device))
734 return -EFAULT;
735
736 if (copy_to_user(argp, &i32, sizeof(i32)))
737 return -EFAULT;
738
739 return 0;
740}
741
742typedef struct drm_agp_buffer32 {
743 u32 size; /**< In bytes -- will round to page boundary */
744 u32 handle; /**< Used for binding / unbinding */
745 u32 type; /**< Type of memory to allocate */
b5e89ed5 746 u32 physical; /**< Physical used by i810 */
9a186645
DA		 747} drm_agp_buffer32_t;
748
749static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
750 unsigned long arg)
751{
752 drm_agp_buffer32_t __user *argp = (void __user *)arg;
753 drm_agp_buffer32_t req32;
ff4135ae 754 struct drm_agp_buffer __user *request;
9a186645
DA		 755 int err;
756
757 if (copy_from_user(&req32, argp, sizeof(req32)))
758 return -EFAULT;
759
760 request = compat_alloc_user_space(sizeof(*request));
1f96beec 761 if (!request
9a186645
DA		 762 || __put_user(req32.size, &request->size)
763 || __put_user(req32.type, &request->type))
764 return -EFAULT;
765
ed8b6704 766 err = drm_ioctl(file, DRM_IOCTL_AGP_ALLOC, (unsigned long)request);
9a186645
DA		 767 if (err)
768 return err;
769
770 if (__get_user(req32.handle, &request->handle)
771 || __get_user(req32.physical, &request->physical)
772 || copy_to_user(argp, &req32, sizeof(req32))) {
ed8b6704 773 drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
9a186645
DA		 774 return -EFAULT;
775 }
776
777 return 0;
778}
779
780static int compat_drm_agp_free(struct file *file, unsigned int cmd,
781 unsigned long arg)
782{
783 drm_agp_buffer32_t __user *argp = (void __user *)arg;
ff4135ae 784 struct drm_agp_buffer __user *request;
9a186645
DA		 785 u32 handle;
786
787 request = compat_alloc_user_space(sizeof(*request));
1f96beec 788 if (!request
9a186645
DA		 789 || get_user(handle, &argp->handle)
790 || __put_user(handle, &request->handle))
791 return -EFAULT;
792
ed8b6704 793 return drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
9a186645
DA		 794}
795
796typedef struct drm_agp_binding32 {
797 u32 handle; /**< From drm_agp_buffer */
798 u32 offset; /**< In bytes -- will round to page boundary */
799} drm_agp_binding32_t;
800
801static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
802 unsigned long arg)
803{
804 drm_agp_binding32_t __user *argp = (void __user *)arg;
805 drm_agp_binding32_t req32;
ff4135ae 806 struct drm_agp_binding __user *request;
9a186645
DA		 807
808 if (copy_from_user(&req32, argp, sizeof(req32)))
809 return -EFAULT;
810
811 request = compat_alloc_user_space(sizeof(*request));
1f96beec 812 if (!request
9a186645
DA		 813 || __put_user(req32.handle, &request->handle)
814 || __put_user(req32.offset, &request->offset))
815 return -EFAULT;
816
ed8b6704 817 return drm_ioctl(file, DRM_IOCTL_AGP_BIND, (unsigned long)request);
9a186645
DA		 818}
819
820static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
821 unsigned long arg)
822{
823 drm_agp_binding32_t __user *argp = (void __user *)arg;
ff4135ae 824 struct drm_agp_binding __user *request;
9a186645
DA		 825 u32 handle;
826
827 request = compat_alloc_user_space(sizeof(*request));
1f96beec 828 if (!request
9a186645
DA		 829 || get_user(handle, &argp->handle)
830 || __put_user(handle, &request->handle))
831 return -EFAULT;
832
ed8b6704 833 return drm_ioctl(file, DRM_IOCTL_AGP_UNBIND, (unsigned long)request);
9a186645 834}
a7fb8a23 835#endif /* CONFIG_AGP */
9a186645
DA		 836
837typedef struct drm_scatter_gather32 {
838 u32 size; /**< In bytes -- will round to page boundary */
839 u32 handle; /**< Used for mapping / unmapping */
840} drm_scatter_gather32_t;
841
842static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
843 unsigned long arg)
844{
845 drm_scatter_gather32_t __user *argp = (void __user *)arg;
ff4135ae 846 struct drm_scatter_gather __user *request;
9a186645
DA		 847 int err;
848 unsigned long x;
849
850 request = compat_alloc_user_space(sizeof(*request));
1f96beec 851 if (!request || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
9a186645
DA		 852 || __get_user(x, &argp->size)
853 || __put_user(x, &request->size))
854 return -EFAULT;
855
ed8b6704 856 err = drm_ioctl(file, DRM_IOCTL_SG_ALLOC, (unsigned long)request);
9a186645
DA		 857 if (err)
858 return err;
859
860 /* XXX not sure about the handle conversion here... */
861 if (__get_user(x, &request->handle)
862 || __put_user(x >> PAGE_SHIFT, &argp->handle))
863 return -EFAULT;
864
865 return 0;
866}
867
868static int compat_drm_sg_free(struct file *file, unsigned int cmd,
869 unsigned long arg)
870{
871 drm_scatter_gather32_t __user *argp = (void __user *)arg;
ff4135ae 872 struct drm_scatter_gather __user *request;
9a186645
DA		 873 unsigned long x;
874
875 request = compat_alloc_user_space(sizeof(*request));
1f96beec 876 if (!request || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
9a186645
DA		 877 || __get_user(x, &argp->handle)
878 || __put_user(x << PAGE_SHIFT, &request->handle))
879 return -EFAULT;
880
ed8b6704 881 return drm_ioctl(file, DRM_IOCTL_SG_FREE, (unsigned long)request);
9a186645
DA		 882}
883
09e40d65 884#if defined(CONFIG_X86) || defined(CONFIG_IA64)
49568873
EA		 885typedef struct drm_update_draw32 {
886 drm_drawable_t handle;
887 unsigned int type;
888 unsigned int num;
889 /* 64-bit version has a 32-bit pad here */
890 u64 data; /**< Pointer */
891} __attribute__((packed)) drm_update_draw32_t;
892
893static int compat_drm_update_draw(struct file *file, unsigned int cmd,
894 unsigned long arg)
895{
896 drm_update_draw32_t update32;
897 struct drm_update_draw __user *request;
898 int err;
899
900 if (copy_from_user(&update32, (void __user *)arg, sizeof(update32)))
901 return -EFAULT;
902
903 request = compat_alloc_user_space(sizeof(*request));
1f96beec 904 if (!request ||
49568873
EA		 905 __put_user(update32.handle, &request->handle) ||
906 __put_user(update32.type, &request->type) ||
907 __put_user(update32.num, &request->num) ||
908 __put_user(update32.data, &request->data))
909 return -EFAULT;
910
ed8b6704 911 err = drm_ioctl(file, DRM_IOCTL_UPDATE_DRAW, (unsigned long)request);
49568873
EA		 912 return err;
913}
09e40d65 914#endif
49568873 915
9a186645 916struct drm_wait_vblank_request32 {
ff4135ae 917 enum drm_vblank_seq_type type;
9a186645
DA		 918 unsigned int sequence;
919 u32 signal;
920};
921
922struct drm_wait_vblank_reply32 {
ff4135ae 923 enum drm_vblank_seq_type type;
9a186645
DA		 924 unsigned int sequence;
925 s32 tval_sec;
926 s32 tval_usec;
927};
928
929typedef union drm_wait_vblank32 {
930 struct drm_wait_vblank_request32 request;
931 struct drm_wait_vblank_reply32 reply;
932} drm_wait_vblank32_t;
933
934static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
935 unsigned long arg)
936{
937 drm_wait_vblank32_t __user *argp = (void __user *)arg;
938 drm_wait_vblank32_t req32;
ff4135ae 939 union drm_wait_vblank __user *request;
9a186645
DA		 940 int err;
941
942 if (copy_from_user(&req32, argp, sizeof(req32)))
943 return -EFAULT;
944
945 request = compat_alloc_user_space(sizeof(*request));
1f96beec 946 if (!request
9a186645
DA		 947 || __put_user(req32.request.type, &request->request.type)
948 || __put_user(req32.request.sequence, &request->request.sequence)
949 || __put_user(req32.request.signal, &request->request.signal))
950 return -EFAULT;
951
ed8b6704 952 err = drm_ioctl(file, DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
9a186645
DA		 953 if (err)
954 return err;
955
956 if (__get_user(req32.reply.type, &request->reply.type)
957 || __get_user(req32.reply.sequence, &request->reply.sequence)
958 || __get_user(req32.reply.tval_sec, &request->reply.tval_sec)
959 || __get_user(req32.reply.tval_usec, &request->reply.tval_usec))
960 return -EFAULT;
961
962 if (copy_to_user(argp, &req32, sizeof(req32)))
963 return -EFAULT;
964
965 return 0;
966}
967
a988588b 968#if defined(CONFIG_X86) || defined(CONFIG_IA64)
c631d5f9
TU		 969typedef struct drm_mode_fb_cmd232 {
970 u32 fb_id;
971 u32 width;
972 u32 height;
973 u32 pixel_format;
974 u32 flags;
975 u32 handles[4];
976 u32 pitches[4];
977 u32 offsets[4];
978 u64 modifier[4];
979} __attribute__((packed)) drm_mode_fb_cmd232_t;
980
981static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd,
982 unsigned long arg)
983{
984 struct drm_mode_fb_cmd232 __user *argp = (void __user *)arg;
985 struct drm_mode_fb_cmd232 req32;
986 struct drm_mode_fb_cmd2 __user *req64;
987 int i;
988 int err;
989
990 if (copy_from_user(&req32, argp, sizeof(req32)))
991 return -EFAULT;
992
993 req64 = compat_alloc_user_space(sizeof(*req64));
994
995 if (!access_ok(VERIFY_WRITE, req64, sizeof(*req64))
996 || __put_user(req32.width, &req64->width)
997 || __put_user(req32.height, &req64->height)
998 || __put_user(req32.pixel_format, &req64->pixel_format)
999 || __put_user(req32.flags, &req64->flags))
1000 return -EFAULT;
1001
1002 for (i = 0; i < 4; i++) {
1003 if (__put_user(req32.handles[i], &req64->handles[i]))
1004 return -EFAULT;
1005 if (__put_user(req32.pitches[i], &req64->pitches[i]))
1006 return -EFAULT;
1007 if (__put_user(req32.offsets[i], &req64->offsets[i]))
1008 return -EFAULT;
1009 if (__put_user(req32.modifier[i], &req64->modifier[i]))
1010 return -EFAULT;
1011 }
1012
1013 err = drm_ioctl(file, DRM_IOCTL_MODE_ADDFB2, (unsigned long)req64);
1014 if (err)
1015 return err;
1016
1017 if (__get_user(req32.fb_id, &req64->fb_id))
1018 return -EFAULT;
1019
1020 if (copy_to_user(argp, &req32, sizeof(req32)))
1021 return -EFAULT;
1022
1023 return 0;
1024}
a988588b 1025#endif
c631d5f9 1026
9f43e542
AV		 1027static struct {
1028 drm_ioctl_compat_t *fn;
1029 char *name;
1030} drm_compat_ioctls[] = {
ff22ff9e 1031#define DRM_IOCTL32_DEF(n, f) [DRM_IOCTL_NR(n##32)] = {.fn = f, .name = #n}
012c6741 1032 DRM_IOCTL32_DEF(DRM_IOCTL_VERSION, compat_drm_version),
17e3dade 1033 DRM_IOCTL32_DEF(DRM_IOCTL_GET_UNIQUE, compat_drm_getunique),
8c4fe499 1034 DRM_IOCTL32_DEF(DRM_IOCTL_GET_MAP, compat_drm_getmap),
9e92662d 1035 DRM_IOCTL32_DEF(DRM_IOCTL_GET_CLIENT, compat_drm_getclient),
9f43e542 1036 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)].fn = compat_drm_getstats,
56c275cc 1037 DRM_IOCTL32_DEF(DRM_IOCTL_SET_UNIQUE, compat_drm_setunique),
9f43e542 1038 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)].fn = compat_drm_addmap,
ff22ff9e 1039 DRM_IOCTL32_DEF(DRM_IOCTL_ADD_BUFS, compat_drm_addbufs),
9f43e542 1040 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)].fn = compat_drm_markbufs,
5c7640ab 1041 DRM_IOCTL32_DEF(DRM_IOCTL_INFO_BUFS, compat_drm_infobufs),
9f43e542
AV		 1042 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)].fn = compat_drm_mapbufs,
1043 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)].fn = compat_drm_freebufs,
1044 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)].fn = compat_drm_rmmap,
1045 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)].fn = compat_drm_setsareactx,
1046 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)].fn = compat_drm_getsareactx,
1047 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)].fn = compat_drm_resctx,
1048 [DRM_IOCTL_NR(DRM_IOCTL_DMA32)].fn = compat_drm_dma,
a7fb8a23 1049#if IS_ENABLED(CONFIG_AGP)
9f43e542
AV		 1050 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)].fn = compat_drm_agp_enable,
1051 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)].fn = compat_drm_agp_info,
1052 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)].fn = compat_drm_agp_alloc,
1053 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)].fn = compat_drm_agp_free,
1054 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)].fn = compat_drm_agp_bind,
1055 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)].fn = compat_drm_agp_unbind,
9a186645 1056#endif
9f43e542
AV		 1057 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)].fn = compat_drm_sg_alloc,
1058 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)].fn = compat_drm_sg_free,
09e40d65 1059#if defined(CONFIG_X86) || defined(CONFIG_IA64)
9f43e542 1060 [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)].fn = compat_drm_update_draw,
09e40d65 1061#endif
9f43e542 1062 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)].fn = compat_drm_wait_vblank,
a988588b 1063#if defined(CONFIG_X86) || defined(CONFIG_IA64)
9f43e542 1064 [DRM_IOCTL_NR(DRM_IOCTL_MODE_ADDFB232)].fn = compat_drm_mode_addfb2,
a988588b 1065#endif
9a186645
DA		 1066};
1067
1068/**
2640981f
DV		 1069 * drm_compat_ioctl - 32bit IOCTL compatibility handler for DRM drivers
1070 * @filp: file this ioctl is called on
1071 * @cmd: ioctl cmd number
1072 * @arg: user argument
1073 *
1074 * Compatibility handler for 32 bit userspace running on 64 kernels. All actual
1075 * IOCTL handling is forwarded to drm_ioctl(), while marshalling structures as
1076 * appropriate. Note that this only handles DRM core IOCTLs, if the driver has
1077 * botched IOCTL itself, it must handle those by wrapping this function.
9a186645 1078 *
2640981f
DV		 1079 * Returns:
1080 * Zero on success, negative error code on failure.
9a186645
DA		 1081 */
1082long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1083{
1084 unsigned int nr = DRM_IOCTL_NR(cmd);
1085 drm_ioctl_compat_t *fn;
1086 int ret;
1087
7ffa05e0
IR		 1088 /* Assume that ioctls without an explicit compat routine will just
1089 * work. This may not always be a good assumption, but it's better
1090 * than always failing.
1091 */
3d77461e 1092 if (nr >= ARRAY_SIZE(drm_compat_ioctls))
ed8b6704 1093 return drm_ioctl(filp, cmd, arg);
9a186645 1094
9f43e542
AV		 1095 fn = drm_compat_ioctls[nr].fn;
1096 if (!fn)
1097 return drm_ioctl(filp, cmd, arg);
9a186645 1098
9f43e542
AV		 1099 if (drm_compat_ioctls[nr].name) {
1100 struct drm_file *file_priv = filp->private_data;
1101 DRM_DEBUG("pid=%d, dev=0x%lx, auth=%d, %s\n",
1102 task_pid_nr(current),
1103 (long)old_encode_dev(file_priv->minor->kdev->devt),
1104 file_priv->authenticated,
1105 drm_compat_ioctls[nr].name);
b5e89ed5 1106 ret = (*fn) (filp, cmd, arg);
9f43e542
AV		 1107 if (ret)
1108 DRM_DEBUG("ret = %d\n", ret);
1109 } else {
1110 ret = (*fn) (filp, cmd, arg);
1111 }
9a186645
DA		 1112 return ret;
1113}
1114EXPORT_SYMBOL(drm_compat_ioctl);
Linux 6.x block layer and io_uring tree(s)