git.oblomov.eu Git - linux-2.6/blob - drivers/char/drm/drm_ioc32.c

   1 /**
   2  * \file drm_ioc32.c
   3  *
   4  * 32-bit ioctl compatibility routines for the DRM.
   5  *
   6  * \author Paul Mackerras <paulus@samba.org>
   7  *
   8  * Copyright (C) Paul Mackerras 2005.
   9  * All Rights Reserved.
  10  *
  11  * Permission is hereby granted, free of charge, to any person obtaining a
  12  * copy of this software and associated documentation files (the "Software"),
  13  * to deal in the Software without restriction, including without limitation
  14  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  15  * and/or sell copies of the Software, and to permit persons to whom the
  16  * Software is furnished to do so, subject to the following conditions:
  17  *
  18  * The above copyright notice and this permission notice (including the next
  19  * paragraph) shall be included in all copies or substantial portions of the
  20  * Software.
  21  *
  22  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  23  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  25  * THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  26  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  27  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  28  * IN THE SOFTWARE.
  29  */
  30 #include <linux/compat.h>
  31
  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
  69 typedef struct drm_version_32 {
  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 */
  79 } drm_version32_t;
  80
  81 static int compat_drm_version(struct file *file, unsigned int cmd,
  82                               unsigned long arg)
  83 {
  84         drm_version32_t v32;
  85         drm_version_t __user *version;
  86         int err;
  87
  88         if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
  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
 105         err = drm_ioctl(file->f_path.dentry->d_inode, file,
 106                         DRM_IOCTL_VERSION, (unsigned long)version);
 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
 118         if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
 119                 return -EFAULT;
 120         return 0;
 121 }
 122
 123 typedef struct drm_unique32 {
 124         u32 unique_len; /**< Length of unique */
 125         u32 unique;     /**< Unique name for driver instantiation */
 126 } drm_unique32_t;
 127
 128 static int compat_drm_getunique(struct file *file, unsigned int cmd,
 129                                 unsigned long arg)
 130 {
 131         drm_unique32_t uq32;
 132         drm_unique_t __user *u;
 133         int err;
 134
 135         if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
 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)
 142             || __put_user((void __user *)(unsigned long)uq32.unique,
 143                           &u->unique))
 144                 return -EFAULT;
 145
 146         err = drm_ioctl(file->f_path.dentry->d_inode, file,
 147                         DRM_IOCTL_GET_UNIQUE, (unsigned long)u);
 148         if (err)
 149                 return err;
 150
 151         if (__get_user(uq32.unique_len, &u->unique_len))
 152                 return -EFAULT;
 153         if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
 154                 return -EFAULT;
 155         return 0;
 156 }
 157
 158 static int compat_drm_setunique(struct file *file, unsigned int cmd,
 159                                 unsigned long arg)
 160 {
 161         drm_unique32_t uq32;
 162         drm_unique_t __user *u;
 163
 164         if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
 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)
 171             || __put_user((void __user *)(unsigned long)uq32.unique,
 172                           &u->unique))
 173                 return -EFAULT;
 174
 175         return drm_ioctl(file->f_path.dentry->d_inode, file,
 176                          DRM_IOCTL_SET_UNIQUE, (unsigned long)u);
 177 }
 178
 179 typedef struct drm_map32 {
 180         u32 offset;             /**< Requested physical address (0 for SAREA)*/
 181         u32 size;               /**< Requested physical size (bytes) */
 182         drm_map_type_t type;    /**< Type of memory to map */
 183         drm_map_flags_t flags;  /**< Flags */
 184         u32 handle;             /**< User-space: "Handle" to pass to mmap() */
 185         int mtrr;               /**< MTRR slot used */
 186 } drm_map32_t;
 187
 188 static 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;
 193         drm_map_t __user *map;
 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
 206         err = drm_ioctl(file->f_path.dentry->d_inode, file,
 207                         DRM_IOCTL_GET_MAP, (unsigned long)map);
 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
 219         m32.handle = (unsigned long)handle;
 220         if (copy_to_user(argp, &m32, sizeof(m32)))
 221                 return -EFAULT;
 222         return 0;
 223
 224 }
 225
 226 static 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;
 231         drm_map_t __user *map;
 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
 247         err = drm_ioctl(file->f_path.dentry->d_inode, file,
 248                         DRM_IOCTL_ADD_MAP, (unsigned long)map);
 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
 257         m32.handle = (unsigned long)handle;
 258         if (m32.handle != (unsigned long)handle && printk_ratelimit())
 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
 269 static int compat_drm_rmmap(struct file *file, unsigned int cmd,
 270                             unsigned long arg)
 271 {
 272         drm_map32_t __user *argp = (void __user *)arg;
 273         drm_map_t __user *map;
 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;
 282         if (__put_user((void *)(unsigned long)handle, &map->handle))
 283                 return -EFAULT;
 284
 285         return drm_ioctl(file->f_path.dentry->d_inode, file,
 286                          DRM_IOCTL_RM_MAP, (unsigned long)map);
 287 }
 288
 289 typedef struct drm_client32 {
 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 */
 296 } drm_client32_t;
 297
 298 static 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;
 303         drm_client_t __user *client;
 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
 315         err = drm_ioctl(file->f_path.dentry->d_inode, file,
 316                         DRM_IOCTL_GET_CLIENT, (unsigned long)client);
 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
 332 typedef struct drm_stats32 {
 333         u32 count;
 334         struct {
 335                 u32 value;
 336                 drm_stat_type_t type;
 337         } data[15];
 338 } drm_stats32_t;
 339
 340 static 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;
 345         drm_stats_t __user *stats;
 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
 352         err = drm_ioctl(file->f_path.dentry->d_inode, file,
 353                         DRM_IOCTL_GET_STATS, (unsigned long)stats);
 354         if (err)
 355                 return err;
 356
 357         if (__get_user(s32.count, &stats->count))
 358                 return -EFAULT;
 359         for (i = 0; i < 15; ++i)
 360                 if (__get_user(s32.data[i].value, &stats->data[i].value)
 361                     || __get_user(s32.data[i].type, &stats->data[i].type))
 362                         return -EFAULT;
 363
 364         if (copy_to_user(argp, &s32, sizeof(s32)))
 365                 return -EFAULT;
 366         return 0;
 367 }
 368
 369 typedef struct drm_buf_desc32 {
 370         int count;               /**< Number of buffers of this size */
 371         int size;                /**< Size in bytes */
 372         int low_mark;            /**< Low water mark */
 373         int high_mark;           /**< High water mark */
 374         int flags;
 375         u32 agp_start;           /**< Start address in the AGP aperture */
 376 } drm_buf_desc32_t;
 377
 378 static int compat_drm_addbufs(struct file *file, unsigned int cmd,
 379                               unsigned long arg)
 380 {
 381         drm_buf_desc32_t __user *argp = (void __user *)arg;
 382         drm_buf_desc_t __user *buf;
 383         int err;
 384         unsigned long agp_start;
 385
 386         buf = compat_alloc_user_space(sizeof(*buf));
 387         if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))
 388             || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)))
 389                 return -EFAULT;
 390
 391         if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start))
 392             || __get_user(agp_start, &argp->agp_start)
 393             || __put_user(agp_start, &buf->agp_start))
 394                 return -EFAULT;
 395
 396         err = drm_ioctl(file->f_path.dentry->d_inode, file,
 397                         DRM_IOCTL_ADD_BUFS, (unsigned long)buf);
 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
 409 static 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;
 414         drm_buf_desc_t __user *buf;
 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
 428         return drm_ioctl(file->f_path.dentry->d_inode, file,
 429                          DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
 430 }
 431
 432 typedef struct drm_buf_info32 {
 433         int count;              /**< Entries in list */
 434         u32 list;
 435 } drm_buf_info32_t;
 436
 437 static 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;
 443         drm_buf_info_t __user *request;
 444         drm_buf_desc_t __user *list;
 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;
 453         to = (drm_buf_desc32_t __user *) (unsigned long)req32.list;
 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
 460         nbytes = sizeof(*request) + count * sizeof(drm_buf_desc_t);
 461         request = compat_alloc_user_space(nbytes);
 462         if (!access_ok(VERIFY_WRITE, request, nbytes))
 463                 return -EFAULT;
 464         list = (drm_buf_desc_t *) (request + 1);
 465
 466         if (__put_user(count, &request->count)
 467             || __put_user(list, &request->list))
 468                 return -EFAULT;
 469
 470         err = drm_ioctl(file->f_path.dentry->d_inode, file,
 471                         DRM_IOCTL_INFO_BUFS, (unsigned long)request);
 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],
 480                                            offsetof(drm_buf_desc_t, flags)))
 481                                 return -EFAULT;
 482
 483         if (__put_user(actual, &argp->count))
 484                 return -EFAULT;
 485
 486         return 0;
 487 }
 488
 489 typedef struct drm_buf_pub32 {
 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 */
 494 } drm_buf_pub32_t;
 495
 496 typedef struct drm_buf_map32 {
 497         int count;              /**< Length of the buffer list */
 498         u32 virtual;            /**< Mmap'd area in user-virtual */
 499         u32 list;               /**< Buffer information */
 500 } drm_buf_map32_t;
 501
 502 static 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;
 508         drm_buf_map_t __user *request;
 509         drm_buf_pub_t __user *list;
 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;
 522         nbytes = sizeof(*request) + count * sizeof(drm_buf_pub_t);
 523         request = compat_alloc_user_space(nbytes);
 524         if (!access_ok(VERIFY_WRITE, request, nbytes))
 525                 return -EFAULT;
 526         list = (drm_buf_pub_t *) (request + 1);
 527
 528         if (__put_user(count, &request->count)
 529             || __put_user(list, &request->list))
 530                 return -EFAULT;
 531
 532         err = drm_ioctl(file->f_path.dentry->d_inode, file,
 533                         DRM_IOCTL_MAP_BUFS, (unsigned long)request);
 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],
 542                                            offsetof(drm_buf_pub_t, address))
 543                             || __get_user(addr, &list[i].address)
 544                             || __put_user((unsigned long)addr,
 545                                           &list32[i].address))
 546                                 return -EFAULT;
 547
 548         if (__put_user(actual, &argp->count)
 549             || __get_user(addr, &request->virtual)
 550             || __put_user((unsigned long)addr, &argp->virtual))
 551                 return -EFAULT;
 552
 553         return 0;
 554 }
 555
 556 typedef struct drm_buf_free32 {
 557         int count;
 558         u32 list;
 559 } drm_buf_free32_t;
 560
 561 static int compat_drm_freebufs(struct file *file, unsigned int cmd,
 562                                unsigned long arg)
 563 {
 564         drm_buf_free32_t req32;
 565         drm_buf_free_t __user *request;
 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)
 575             || __put_user((int __user *)(unsigned long)req32.list,
 576                           &request->list))
 577                 return -EFAULT;
 578
 579         return drm_ioctl(file->f_path.dentry->d_inode, file,
 580                          DRM_IOCTL_FREE_BUFS, (unsigned long)request);
 581 }
 582
 583 typedef struct drm_ctx_priv_map32 {
 584         unsigned int ctx_id;     /**< Context requesting private mapping */
 585         u32 handle;             /**< Handle of map */
 586 } drm_ctx_priv_map32_t;
 587
 588 static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
 589                                   unsigned long arg)
 590 {
 591         drm_ctx_priv_map32_t req32;
 592         drm_ctx_priv_map_t __user *request;
 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)
 602             || __put_user((void *)(unsigned long)req32.handle,
 603                           &request->handle))
 604                 return -EFAULT;
 605
 606         return drm_ioctl(file->f_path.dentry->d_inode, file,
 607                          DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
 608 }
 609
 610 static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
 611                                   unsigned long arg)
 612 {
 613         drm_ctx_priv_map_t __user *request;
 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
 629         err = drm_ioctl(file->f_path.dentry->d_inode, file,
 630                         DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
 631         if (err)
 632                 return err;
 633
 634         if (__get_user(handle, &request->handle)
 635             || __put_user((unsigned long)handle, &argp->handle))
 636                 return -EFAULT;
 637
 638         return 0;
 639 }
 640
 641 typedef struct drm_ctx_res32 {
 642         int count;
 643         u32 contexts;
 644 } drm_ctx_res32_t;
 645
 646 static 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;
 651         drm_ctx_res_t __user *res;
 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)
 661             || __put_user((drm_ctx_t __user *) (unsigned long)res32.contexts,
 662                           &res->contexts))
 663                 return -EFAULT;
 664
 665         err = drm_ioctl(file->f_path.dentry->d_inode, file,
 666                         DRM_IOCTL_RES_CTX, (unsigned long)res);
 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
 677 typedef struct drm_dma32 {
 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 */
 682         drm_dma_flags_t flags;            /**< Flags */
 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 */
 688 } drm_dma32_t;
 689
 690 static int compat_drm_dma(struct file *file, unsigned int cmd,
 691                           unsigned long arg)
 692 {
 693         drm_dma32_t d32;
 694         drm_dma32_t __user *argp = (void __user *)arg;
 695         drm_dma_t __user *d;
 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)
 707             || __put_user((int __user *)(unsigned long)d32.send_indices,
 708                           &d->send_indices)
 709             || __put_user((int __user *)(unsigned long)d32.send_sizes,
 710                           &d->send_sizes)
 711             || __put_user(d32.flags, &d->flags)
 712             || __put_user(d32.request_count, &d->request_count)
 713             || __put_user((int __user *)(unsigned long)d32.request_indices,
 714                           &d->request_indices)
 715             || __put_user((int __user *)(unsigned long)d32.request_sizes,
 716                           &d->request_sizes))
 717                 return -EFAULT;
 718
 719         err = drm_ioctl(file->f_path.dentry->d_inode, file,
 720                         DRM_IOCTL_DMA, (unsigned long)d);
 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
 734 typedef struct drm_agp_mode32 {
 735         u32 mode;       /**< AGP mode */
 736 } drm_agp_mode32_t;
 737
 738 static 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;
 743         drm_agp_mode_t __user *mode;
 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
 752         return drm_ioctl(file->f_path.dentry->d_inode, file,
 753                          DRM_IOCTL_AGP_ENABLE, (unsigned long)mode);
 754 }
 755
 756 typedef struct drm_agp_info32 {
 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 */
 766         unsigned short id_vendor;
 767         unsigned short id_device;
 768 } drm_agp_info32_t;
 769
 770 static 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;
 775         drm_agp_info_t __user *info;
 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
 782         err = drm_ioctl(file->f_path.dentry->d_inode, file,
 783                         DRM_IOCTL_AGP_INFO, (unsigned long)info);
 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
 804 typedef 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 */
 808         u32 physical;   /**< Physical used by i810 */
 809 } drm_agp_buffer32_t;
 810
 811 static 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;
 816         drm_agp_buffer_t __user *request;
 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
 828         err = drm_ioctl(file->f_path.dentry->d_inode, file,
 829                         DRM_IOCTL_AGP_ALLOC, (unsigned long)request);
 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))) {
 836                 drm_ioctl(file->f_path.dentry->d_inode, file,
 837                           DRM_IOCTL_AGP_FREE, (unsigned long)request);
 838                 return -EFAULT;
 839         }
 840
 841         return 0;
 842 }
 843
 844 static 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;
 848         drm_agp_buffer_t __user *request;
 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
 857         return drm_ioctl(file->f_path.dentry->d_inode, file,
 858                          DRM_IOCTL_AGP_FREE, (unsigned long)request);
 859 }
 860
 861 typedef 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
 866 static 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;
 871         drm_agp_binding_t __user *request;
 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
 882         return drm_ioctl(file->f_path.dentry->d_inode, file,
 883                          DRM_IOCTL_AGP_BIND, (unsigned long)request);
 884 }
 885
 886 static 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;
 890         drm_agp_binding_t __user *request;
 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
 899         return drm_ioctl(file->f_path.dentry->d_inode, file,
 900                          DRM_IOCTL_AGP_UNBIND, (unsigned long)request);
 901 }
 902 #endif                          /* __OS_HAS_AGP */
 903
 904 typedef 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
 909 static 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;
 913         drm_scatter_gather_t __user *request;
 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
 924         err = drm_ioctl(file->f_path.dentry->d_inode, file,
 925                         DRM_IOCTL_SG_ALLOC, (unsigned long)request);
 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
 937 static 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;
 941         drm_scatter_gather_t __user *request;
 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
 951         return drm_ioctl(file->f_path.dentry->d_inode, file,
 952                          DRM_IOCTL_SG_FREE, (unsigned long)request);
 953 }
 954
 955 struct drm_wait_vblank_request32 {
 956         drm_vblank_seq_type_t type;
 957         unsigned int sequence;
 958         u32 signal;
 959 };
 960
 961 struct drm_wait_vblank_reply32 {
 962         drm_vblank_seq_type_t type;
 963         unsigned int sequence;
 964         s32 tval_sec;
 965         s32 tval_usec;
 966 };
 967
 968 typedef union drm_wait_vblank32 {
 969         struct drm_wait_vblank_request32 request;
 970         struct drm_wait_vblank_reply32 reply;
 971 } drm_wait_vblank32_t;
 972
 973 static 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;
 978         drm_wait_vblank_t __user *request;
 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
 991         err = drm_ioctl(file->f_path.dentry->d_inode, file,
 992                         DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
 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
1008 drm_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  *
1043  * \param filp file pointer.
1044  * \param cmd command.
1045  * \param arg user argument.
1046  * \return zero on success or negative number on failure.
1047  */
1048 long 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
1054         if (nr >= ARRAY_SIZE(drm_compat_ioctls))
1055                 return -ENOTTY;
1056
1057         fn = drm_compat_ioctls[nr];
1058
1059         lock_kernel();          /* XXX for now */
1060         if (fn != NULL)
1061                 ret = (*fn) (filp, cmd, arg);
1062         else
1063                 ret = drm_ioctl(filp->f_path.dentry->d_inode, filp, cmd, arg);
1064         unlock_kernel();
1065
1066         return ret;
1067 }
1068
1069 EXPORT_SYMBOL(drm_compat_ioctl);