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_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t) 68 69 #define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t) 70 71 typedef struct drm_version_32 { 72 int version_major; /**< Major version */ 73 int version_minor; /**< Minor version */ 74 int version_patchlevel; /**< Patch level */ 75 u32 name_len; /**< Length of name buffer */ 76 u32 name; /**< Name of driver */ 77 u32 date_len; /**< Length of date buffer */ 78 u32 date; /**< User-space buffer to hold date */ 79 u32 desc_len; /**< Length of desc buffer */ 80 u32 desc; /**< User-space buffer to hold desc */ 81 } drm_version32_t; 82 83 static int compat_drm_version(struct file *file, unsigned int cmd, 84 unsigned long arg) 85 { 86 drm_version32_t v32; 87 struct drm_version __user *version; 88 int err; 89 90 if (copy_from_user(&v32, (void __user *)arg, sizeof(v32))) 91 return -EFAULT; 92 93 version = compat_alloc_user_space(sizeof(*version)); 94 if (!access_ok(VERIFY_WRITE, version, sizeof(*version))) 95 return -EFAULT; 96 if (__put_user(v32.name_len, &version->name_len) 97 || __put_user((void __user *)(unsigned long)v32.name, 98 &version->name) 99 || __put_user(v32.date_len, &version->date_len) 100 || __put_user((void __user *)(unsigned long)v32.date, 101 &version->date) 102 || __put_user(v32.desc_len, &version->desc_len) 103 || __put_user((void __user *)(unsigned long)v32.desc, 104 &version->desc)) 105 return -EFAULT; 106 107 err = drm_ioctl(file->f_path.dentry->d_inode, file, 108 DRM_IOCTL_VERSION, (unsigned long)version); 109 if (err) 110 return err; 111 112 if (__get_user(v32.version_major, &version->version_major) 113 || __get_user(v32.version_minor, &version->version_minor) 114 || __get_user(v32.version_patchlevel, &version->version_patchlevel) 115 || __get_user(v32.name_len, &version->name_len) 116 || __get_user(v32.date_len, &version->date_len) 117 || __get_user(v32.desc_len, &version->desc_len)) 118 return -EFAULT; 119 120 if (copy_to_user((void __user *)arg, &v32, sizeof(v32))) 121 return -EFAULT; 122 return 0; 123 } 124 125 typedef struct drm_unique32 { 126 u32 unique_len; /**< Length of unique */ 127 u32 unique; /**< Unique name for driver instantiation */ 128 } drm_unique32_t; 129 130 static int compat_drm_getunique(struct file *file, unsigned int cmd, 131 unsigned long arg) 132 { 133 drm_unique32_t uq32; 134 struct drm_unique __user *u; 135 int err; 136 137 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32))) 138 return -EFAULT; 139 140 u = compat_alloc_user_space(sizeof(*u)); 141 if (!access_ok(VERIFY_WRITE, u, sizeof(*u))) 142 return -EFAULT; 143 if (__put_user(uq32.unique_len, &u->unique_len) 144 || __put_user((void __user *)(unsigned long)uq32.unique, 145 &u->unique)) 146 return -EFAULT; 147 148 err = drm_ioctl(file->f_path.dentry->d_inode, file, 149 DRM_IOCTL_GET_UNIQUE, (unsigned long)u); 150 if (err) 151 return err; 152 153 if (__get_user(uq32.unique_len, &u->unique_len)) 154 return -EFAULT; 155 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32))) 156 return -EFAULT; 157 return 0; 158 } 159 160 static int compat_drm_setunique(struct file *file, unsigned int cmd, 161 unsigned long arg) 162 { 163 drm_unique32_t uq32; 164 struct drm_unique __user *u; 165 166 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32))) 167 return -EFAULT; 168 169 u = compat_alloc_user_space(sizeof(*u)); 170 if (!access_ok(VERIFY_WRITE, u, sizeof(*u))) 171 return -EFAULT; 172 if (__put_user(uq32.unique_len, &u->unique_len) 173 || __put_user((void __user *)(unsigned long)uq32.unique, 174 &u->unique)) 175 return -EFAULT; 176 177 return drm_ioctl(file->f_path.dentry->d_inode, file, 178 DRM_IOCTL_SET_UNIQUE, (unsigned long)u); 179 } 180 181 typedef struct drm_map32 { 182 u32 offset; /**< Requested physical address (0 for SAREA)*/ 183 u32 size; /**< Requested physical size (bytes) */ 184 enum drm_map_type type; /**< Type of memory to map */ 185 enum drm_map_flags flags; /**< Flags */ 186 u32 handle; /**< User-space: "Handle" to pass to mmap() */ 187 int mtrr; /**< MTRR slot used */ 188 } drm_map32_t; 189 190 static int compat_drm_getmap(struct file *file, unsigned int cmd, 191 unsigned long arg) 192 { 193 drm_map32_t __user *argp = (void __user *)arg; 194 drm_map32_t m32; 195 struct drm_map __user *map; 196 int idx, err; 197 void *handle; 198 199 if (get_user(idx, &argp->offset)) 200 return -EFAULT; 201 202 map = compat_alloc_user_space(sizeof(*map)); 203 if (!access_ok(VERIFY_WRITE, map, sizeof(*map))) 204 return -EFAULT; 205 if (__put_user(idx, &map->offset)) 206 return -EFAULT; 207 208 err = drm_ioctl(file->f_path.dentry->d_inode, file, 209 DRM_IOCTL_GET_MAP, (unsigned long)map); 210 if (err) 211 return err; 212 213 if (__get_user(m32.offset, &map->offset) 214 || __get_user(m32.size, &map->size) 215 || __get_user(m32.type, &map->type) 216 || __get_user(m32.flags, &map->flags) 217 || __get_user(handle, &map->handle) 218 || __get_user(m32.mtrr, &map->mtrr)) 219 return -EFAULT; 220 221 m32.handle = (unsigned long)handle; 222 if (copy_to_user(argp, &m32, sizeof(m32))) 223 return -EFAULT; 224 return 0; 225 226 } 227 228 static int compat_drm_addmap(struct file *file, unsigned int cmd, 229 unsigned long arg) 230 { 231 drm_map32_t __user *argp = (void __user *)arg; 232 drm_map32_t m32; 233 struct drm_map __user *map; 234 int err; 235 void *handle; 236 237 if (copy_from_user(&m32, argp, sizeof(m32))) 238 return -EFAULT; 239 240 map = compat_alloc_user_space(sizeof(*map)); 241 if (!access_ok(VERIFY_WRITE, map, sizeof(*map))) 242 return -EFAULT; 243 if (__put_user(m32.offset, &map->offset) 244 || __put_user(m32.size, &map->size) 245 || __put_user(m32.type, &map->type) 246 || __put_user(m32.flags, &map->flags)) 247 return -EFAULT; 248 249 err = drm_ioctl(file->f_path.dentry->d_inode, file, 250 DRM_IOCTL_ADD_MAP, (unsigned long)map); 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; 258 259 m32.handle = (unsigned long)handle; 260 if (m32.handle != (unsigned long)handle && printk_ratelimit()) 261 printk(KERN_ERR "compat_drm_addmap truncated handle" 262 " %p for type %d offset %x\n", 263 handle, m32.type, m32.offset); 264 265 if (copy_to_user(argp, &m32, sizeof(m32))) 266 return -EFAULT; 267 268 return 0; 269 } 270 271 static int compat_drm_rmmap(struct file *file, unsigned int cmd, 272 unsigned long arg) 273 { 274 drm_map32_t __user *argp = (void __user *)arg; 275 struct drm_map __user *map; 276 u32 handle; 277 278 if (get_user(handle, &argp->handle)) 279 return -EFAULT; 280 281 map = compat_alloc_user_space(sizeof(*map)); 282 if (!access_ok(VERIFY_WRITE, map, sizeof(*map))) 283 return -EFAULT; 284 if (__put_user((void *)(unsigned long)handle, &map->handle)) 285 return -EFAULT; 286 287 return drm_ioctl(file->f_path.dentry->d_inode, file, 288 DRM_IOCTL_RM_MAP, (unsigned long)map); 289 } 290 291 typedef struct drm_client32 { 292 int idx; /**< Which client desired? */ 293 int auth; /**< Is client authenticated? */ 294 u32 pid; /**< Process ID */ 295 u32 uid; /**< User ID */ 296 u32 magic; /**< Magic */ 297 u32 iocs; /**< Ioctl count */ 298 } drm_client32_t; 299 300 static int compat_drm_getclient(struct file *file, unsigned int cmd, 301 unsigned long arg) 302 { 303 drm_client32_t c32; 304 drm_client32_t __user *argp = (void __user *)arg; 305 struct drm_client __user *client; 306 int idx, err; 307 308 if (get_user(idx, &argp->idx)) 309 return -EFAULT; 310 311 client = compat_alloc_user_space(sizeof(*client)); 312 if (!access_ok(VERIFY_WRITE, client, sizeof(*client))) 313 return -EFAULT; 314 if (__put_user(idx, &client->idx)) 315 return -EFAULT; 316 317 err = drm_ioctl(file->f_path.dentry->d_inode, file, 318 DRM_IOCTL_GET_CLIENT, (unsigned long)client); 319 if (err) 320 return err; 321 322 if (__get_user(c32.auth, &client->auth) 323 || __get_user(c32.pid, &client->pid) 324 || __get_user(c32.uid, &client->uid) 325 || __get_user(c32.magic, &client->magic) 326 || __get_user(c32.iocs, &client->iocs)) 327 return -EFAULT; 328 329 if (copy_to_user(argp, &c32, sizeof(c32))) 330 return -EFAULT; 331 return 0; 332 } 333 334 typedef struct drm_stats32 { 335 u32 count; 336 struct { 337 u32 value; 338 enum drm_stat_type type; 339 } data[15]; 340 } drm_stats32_t; 341 342 static int compat_drm_getstats(struct file *file, unsigned int cmd, 343 unsigned long arg) 344 { 345 drm_stats32_t s32; 346 drm_stats32_t __user *argp = (void __user *)arg; 347 struct drm_stats __user *stats; 348 int i, err; 349 350 stats = compat_alloc_user_space(sizeof(*stats)); 351 if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats))) 352 return -EFAULT; 353 354 err = drm_ioctl(file->f_path.dentry->d_inode, file, 355 DRM_IOCTL_GET_STATS, (unsigned long)stats); 356 if (err) 357 return err; 358 359 if (__get_user(s32.count, &stats->count)) 360 return -EFAULT; 361 for (i = 0; i < 15; ++i) 362 if (__get_user(s32.data[i].value, &stats->data[i].value) 363 || __get_user(s32.data[i].type, &stats->data[i].type)) 364 return -EFAULT; 365 366 if (copy_to_user(argp, &s32, sizeof(s32))) 367 return -EFAULT; 368 return 0; 369 } 370 371 typedef struct drm_buf_desc32 { 372 int count; /**< Number of buffers of this size */ 373 int size; /**< Size in bytes */ 374 int low_mark; /**< Low water mark */ 375 int high_mark; /**< High water mark */ 376 int flags; 377 u32 agp_start; /**< Start address in the AGP aperture */ 378 } drm_buf_desc32_t; 379 380 static int compat_drm_addbufs(struct file *file, unsigned int cmd, 381 unsigned long arg) 382 { 383 drm_buf_desc32_t __user *argp = (void __user *)arg; 384 struct drm_buf_desc __user *buf; 385 int err; 386 unsigned long agp_start; 387 388 buf = compat_alloc_user_space(sizeof(*buf)); 389 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)) 390 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))) 391 return -EFAULT; 392 393 if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start)) 394 || __get_user(agp_start, &argp->agp_start) 395 || __put_user(agp_start, &buf->agp_start)) 396 return -EFAULT; 397 398 err = drm_ioctl(file->f_path.dentry->d_inode, file, 399 DRM_IOCTL_ADD_BUFS, (unsigned long)buf); 400 if (err) 401 return err; 402 403 if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start)) 404 || __get_user(agp_start, &buf->agp_start) 405 || __put_user(agp_start, &argp->agp_start)) 406 return -EFAULT; 407 408 return 0; 409 } 410 411 static int compat_drm_markbufs(struct file *file, unsigned int cmd, 412 unsigned long arg) 413 { 414 drm_buf_desc32_t b32; 415 drm_buf_desc32_t __user *argp = (void __user *)arg; 416 struct drm_buf_desc __user *buf; 417 418 if (copy_from_user(&b32, argp, sizeof(b32))) 419 return -EFAULT; 420 421 buf = compat_alloc_user_space(sizeof(*buf)); 422 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))) 423 return -EFAULT; 424 425 if (__put_user(b32.size, &buf->size) 426 || __put_user(b32.low_mark, &buf->low_mark) 427 || __put_user(b32.high_mark, &buf->high_mark)) 428 return -EFAULT; 429 430 return drm_ioctl(file->f_path.dentry->d_inode, file, 431 DRM_IOCTL_MARK_BUFS, (unsigned long)buf); 432 } 433 434 typedef struct drm_buf_info32 { 435 int count; /**< Entries in list */ 436 u32 list; 437 } drm_buf_info32_t; 438 439 static int compat_drm_infobufs(struct file *file, unsigned int cmd, 440 unsigned long arg) 441 { 442 drm_buf_info32_t req32; 443 drm_buf_info32_t __user *argp = (void __user *)arg; 444 drm_buf_desc32_t __user *to; 445 struct drm_buf_info __user *request; 446 struct drm_buf_desc __user *list; 447 size_t nbytes; 448 int i, err; 449 int count, actual; 450 451 if (copy_from_user(&req32, argp, sizeof(req32))) 452 return -EFAULT; 453 454 count = req32.count; 455 to = (drm_buf_desc32_t __user *) (unsigned long)req32.list; 456 if (count < 0) 457 count = 0; 458 if (count > 0 459 && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t))) 460 return -EFAULT; 461 462 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_desc); 463 request = compat_alloc_user_space(nbytes); 464 if (!access_ok(VERIFY_WRITE, request, nbytes)) 465 return -EFAULT; 466 list = (struct drm_buf_desc *) (request + 1); 467 468 if (__put_user(count, &request->count) 469 || __put_user(list, &request->list)) 470 return -EFAULT; 471 472 err = drm_ioctl(file->f_path.dentry->d_inode, file, 473 DRM_IOCTL_INFO_BUFS, (unsigned long)request); 474 if (err) 475 return err; 476 477 if (__get_user(actual, &request->count)) 478 return -EFAULT; 479 if (count >= actual) 480 for (i = 0; i < actual; ++i) 481 if (__copy_in_user(&to[i], &list[i], 482 offsetof(struct drm_buf_desc, flags))) 483 return -EFAULT; 484 485 if (__put_user(actual, &argp->count)) 486 return -EFAULT; 487 488 return 0; 489 } 490 491 typedef struct drm_buf_pub32 { 492 int idx; /**< Index into the master buffer list */ 493 int total; /**< Buffer size */ 494 int used; /**< Amount of buffer in use (for DMA) */ 495 u32 address; /**< Address of buffer */ 496 } drm_buf_pub32_t; 497 498 typedef struct drm_buf_map32 { 499 int count; /**< Length of the buffer list */ 500 u32 virtual; /**< Mmap'd area in user-virtual */ 501 u32 list; /**< Buffer information */ 502 } drm_buf_map32_t; 503 504 static int compat_drm_mapbufs(struct file *file, unsigned int cmd, 505 unsigned long arg) 506 { 507 drm_buf_map32_t __user *argp = (void __user *)arg; 508 drm_buf_map32_t req32; 509 drm_buf_pub32_t __user *list32; 510 struct drm_buf_map __user *request; 511 struct drm_buf_pub __user *list; 512 int i, err; 513 int count, actual; 514 size_t nbytes; 515 void __user *addr; 516 517 if (copy_from_user(&req32, argp, sizeof(req32))) 518 return -EFAULT; 519 count = req32.count; 520 list32 = (void __user *)(unsigned long)req32.list; 521 522 if (count < 0) 523 return -EINVAL; 524 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub); 525 request = compat_alloc_user_space(nbytes); 526 if (!access_ok(VERIFY_WRITE, request, nbytes)) 527 return -EFAULT; 528 list = (struct drm_buf_pub *) (request + 1); 529 530 if (__put_user(count, &request->count) 531 || __put_user(list, &request->list)) 532 return -EFAULT; 533 534 err = drm_ioctl(file->f_path.dentry->d_inode, file, 535 DRM_IOCTL_MAP_BUFS, (unsigned long)request); 536 if (err) 537 return err; 538 539 if (__get_user(actual, &request->count)) 540 return -EFAULT; 541 if (count >= actual) 542 for (i = 0; i < actual; ++i) 543 if (__copy_in_user(&list32[i], &list[i], 544 offsetof(struct drm_buf_pub, address)) 545 || __get_user(addr, &list[i].address) 546 || __put_user((unsigned long)addr, 547 &list32[i].address)) 548 return -EFAULT; 549 550 if (__put_user(actual, &argp->count) 551 || __get_user(addr, &request->virtual) 552 || __put_user((unsigned long)addr, &argp->virtual)) 553 return -EFAULT; 554 555 return 0; 556 } 557 558 typedef struct drm_buf_free32 { 559 int count; 560 u32 list; 561 } drm_buf_free32_t; 562 563 static int compat_drm_freebufs(struct file *file, unsigned int cmd, 564 unsigned long arg) 565 { 566 drm_buf_free32_t req32; 567 struct drm_buf_free __user *request; 568 drm_buf_free32_t __user *argp = (void __user *)arg; 569 570 if (copy_from_user(&req32, argp, sizeof(req32))) 571 return -EFAULT; 572 573 request = compat_alloc_user_space(sizeof(*request)); 574 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))) 575 return -EFAULT; 576 if (__put_user(req32.count, &request->count) 577 || __put_user((int __user *)(unsigned long)req32.list, 578 &request->list)) 579 return -EFAULT; 580 581 return drm_ioctl(file->f_path.dentry->d_inode, file, 582 DRM_IOCTL_FREE_BUFS, (unsigned long)request); 583 } 584 585 typedef struct drm_ctx_priv_map32 { 586 unsigned int ctx_id; /**< Context requesting private mapping */ 587 u32 handle; /**< Handle of map */ 588 } drm_ctx_priv_map32_t; 589 590 static int compat_drm_setsareactx(struct file *file, unsigned int cmd, 591 unsigned long arg) 592 { 593 drm_ctx_priv_map32_t req32; 594 struct drm_ctx_priv_map __user *request; 595 drm_ctx_priv_map32_t __user *argp = (void __user *)arg; 596 597 if (copy_from_user(&req32, argp, sizeof(req32))) 598 return -EFAULT; 599 600 request = compat_alloc_user_space(sizeof(*request)); 601 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))) 602 return -EFAULT; 603 if (__put_user(req32.ctx_id, &request->ctx_id) 604 || __put_user((void *)(unsigned long)req32.handle, 605 &request->handle)) 606 return -EFAULT; 607 608 return drm_ioctl(file->f_path.dentry->d_inode, file, 609 DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request); 610 } 611 612 static int compat_drm_getsareactx(struct file *file, unsigned int cmd, 613 unsigned long arg) 614 { 615 struct drm_ctx_priv_map __user *request; 616 drm_ctx_priv_map32_t __user *argp = (void __user *)arg; 617 int err; 618 unsigned int ctx_id; 619 void *handle; 620 621 if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp)) 622 || __get_user(ctx_id, &argp->ctx_id)) 623 return -EFAULT; 624 625 request = compat_alloc_user_space(sizeof(*request)); 626 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))) 627 return -EFAULT; 628 if (__put_user(ctx_id, &request->ctx_id)) 629 return -EFAULT; 630 631 err = drm_ioctl(file->f_path.dentry->d_inode, file, 632 DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request); 633 if (err) 634 return err; 635 636 if (__get_user(handle, &request->handle) 637 || __put_user((unsigned long)handle, &argp->handle)) 638 return -EFAULT; 639 640 return 0; 641 } 642 643 typedef struct drm_ctx_res32 { 644 int count; 645 u32 contexts; 646 } drm_ctx_res32_t; 647 648 static int compat_drm_resctx(struct file *file, unsigned int cmd, 649 unsigned long arg) 650 { 651 drm_ctx_res32_t __user *argp = (void __user *)arg; 652 drm_ctx_res32_t res32; 653 struct drm_ctx_res __user *res; 654 int err; 655 656 if (copy_from_user(&res32, argp, sizeof(res32))) 657 return -EFAULT; 658 659 res = compat_alloc_user_space(sizeof(*res)); 660 if (!access_ok(VERIFY_WRITE, res, sizeof(*res))) 661 return -EFAULT; 662 if (__put_user(res32.count, &res->count) 663 || __put_user((struct drm_ctx __user *) (unsigned long)res32.contexts, 664 &res->contexts)) 665 return -EFAULT; 666 667 err = drm_ioctl(file->f_path.dentry->d_inode, file, 668 DRM_IOCTL_RES_CTX, (unsigned long)res); 669 if (err) 670 return err; 671 672 if (__get_user(res32.count, &res->count) 673 || __put_user(res32.count, &argp->count)) 674 return -EFAULT; 675 676 return 0; 677 } 678 679 typedef struct drm_dma32 { 680 int context; /**< Context handle */ 681 int send_count; /**< Number of buffers to send */ 682 u32 send_indices; /**< List of handles to buffers */ 683 u32 send_sizes; /**< Lengths of data to send */ 684 enum drm_dma_flags flags; /**< Flags */ 685 int request_count; /**< Number of buffers requested */ 686 int request_size; /**< Desired size for buffers */ 687 u32 request_indices; /**< Buffer information */ 688 u32 request_sizes; 689 int granted_count; /**< Number of buffers granted */ 690 } drm_dma32_t; 691 692 static int compat_drm_dma(struct file *file, unsigned int cmd, 693 unsigned long arg) 694 { 695 drm_dma32_t d32; 696 drm_dma32_t __user *argp = (void __user *)arg; 697 struct drm_dma __user *d; 698 int err; 699 700 if (copy_from_user(&d32, argp, sizeof(d32))) 701 return -EFAULT; 702 703 d = compat_alloc_user_space(sizeof(*d)); 704 if (!access_ok(VERIFY_WRITE, d, sizeof(*d))) 705 return -EFAULT; 706 707 if (__put_user(d32.context, &d->context) 708 || __put_user(d32.send_count, &d->send_count) 709 || __put_user((int __user *)(unsigned long)d32.send_indices, 710 &d->send_indices) 711 || __put_user((int __user *)(unsigned long)d32.send_sizes, 712 &d->send_sizes) 713 || __put_user(d32.flags, &d->flags) 714 || __put_user(d32.request_count, &d->request_count) 715 || __put_user((int __user *)(unsigned long)d32.request_indices, 716 &d->request_indices) 717 || __put_user((int __user *)(unsigned long)d32.request_sizes, 718 &d->request_sizes)) 719 return -EFAULT; 720 721 err = drm_ioctl(file->f_path.dentry->d_inode, file, 722 DRM_IOCTL_DMA, (unsigned long)d); 723 if (err) 724 return err; 725 726 if (__get_user(d32.request_size, &d->request_size) 727 || __get_user(d32.granted_count, &d->granted_count) 728 || __put_user(d32.request_size, &argp->request_size) 729 || __put_user(d32.granted_count, &argp->granted_count)) 730 return -EFAULT; 731 732 return 0; 733 } 734 735 #if __OS_HAS_AGP 736 typedef struct drm_agp_mode32 { 737 u32 mode; /**< AGP mode */ 738 } drm_agp_mode32_t; 739 740 static int compat_drm_agp_enable(struct file *file, unsigned int cmd, 741 unsigned long arg) 742 { 743 drm_agp_mode32_t __user *argp = (void __user *)arg; 744 drm_agp_mode32_t m32; 745 struct drm_agp_mode __user *mode; 746 747 if (get_user(m32.mode, &argp->mode)) 748 return -EFAULT; 749 750 mode = compat_alloc_user_space(sizeof(*mode)); 751 if (put_user(m32.mode, &mode->mode)) 752 return -EFAULT; 753 754 return drm_ioctl(file->f_path.dentry->d_inode, file, 755 DRM_IOCTL_AGP_ENABLE, (unsigned long)mode); 756 } 757 758 typedef struct drm_agp_info32 { 759 int agp_version_major; 760 int agp_version_minor; 761 u32 mode; 762 u32 aperture_base; /* physical address */ 763 u32 aperture_size; /* bytes */ 764 u32 memory_allowed; /* bytes */ 765 u32 memory_used; 766 767 /* PCI information */ 768 unsigned short id_vendor; 769 unsigned short id_device; 770 } drm_agp_info32_t; 771 772 static int compat_drm_agp_info(struct file *file, unsigned int cmd, 773 unsigned long arg) 774 { 775 drm_agp_info32_t __user *argp = (void __user *)arg; 776 drm_agp_info32_t i32; 777 struct drm_agp_info __user *info; 778 int err; 779 780 info = compat_alloc_user_space(sizeof(*info)); 781 if (!access_ok(VERIFY_WRITE, info, sizeof(*info))) 782 return -EFAULT; 783 784 err = drm_ioctl(file->f_path.dentry->d_inode, file, 785 DRM_IOCTL_AGP_INFO, (unsigned long)info); 786 if (err) 787 return err; 788 789 if (__get_user(i32.agp_version_major, &info->agp_version_major) 790 || __get_user(i32.agp_version_minor, &info->agp_version_minor) 791 || __get_user(i32.mode, &info->mode) 792 || __get_user(i32.aperture_base, &info->aperture_base) 793 || __get_user(i32.aperture_size, &info->aperture_size) 794 || __get_user(i32.memory_allowed, &info->memory_allowed) 795 || __get_user(i32.memory_used, &info->memory_used) 796 || __get_user(i32.id_vendor, &info->id_vendor) 797 || __get_user(i32.id_device, &info->id_device)) 798 return -EFAULT; 799 800 if (copy_to_user(argp, &i32, sizeof(i32))) 801 return -EFAULT; 802 803 return 0; 804 } 805 806 typedef struct drm_agp_buffer32 { 807 u32 size; /**< In bytes -- will round to page boundary */ 808 u32 handle; /**< Used for binding / unbinding */ 809 u32 type; /**< Type of memory to allocate */ 810 u32 physical; /**< Physical used by i810 */ 811 } drm_agp_buffer32_t; 812 813 static int compat_drm_agp_alloc(struct file *file, unsigned int cmd, 814 unsigned long arg) 815 { 816 drm_agp_buffer32_t __user *argp = (void __user *)arg; 817 drm_agp_buffer32_t req32; 818 struct drm_agp_buffer __user *request; 819 int err; 820 821 if (copy_from_user(&req32, argp, sizeof(req32))) 822 return -EFAULT; 823 824 request = compat_alloc_user_space(sizeof(*request)); 825 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 826 || __put_user(req32.size, &request->size) 827 || __put_user(req32.type, &request->type)) 828 return -EFAULT; 829 830 err = drm_ioctl(file->f_path.dentry->d_inode, file, 831 DRM_IOCTL_AGP_ALLOC, (unsigned long)request); 832 if (err) 833 return err; 834 835 if (__get_user(req32.handle, &request->handle) 836 || __get_user(req32.physical, &request->physical) 837 || copy_to_user(argp, &req32, sizeof(req32))) { 838 drm_ioctl(file->f_path.dentry->d_inode, file, 839 DRM_IOCTL_AGP_FREE, (unsigned long)request); 840 return -EFAULT; 841 } 842 843 return 0; 844 } 845 846 static int compat_drm_agp_free(struct file *file, unsigned int cmd, 847 unsigned long arg) 848 { 849 drm_agp_buffer32_t __user *argp = (void __user *)arg; 850 struct drm_agp_buffer __user *request; 851 u32 handle; 852 853 request = compat_alloc_user_space(sizeof(*request)); 854 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 855 || get_user(handle, &argp->handle) 856 || __put_user(handle, &request->handle)) 857 return -EFAULT; 858 859 return drm_ioctl(file->f_path.dentry->d_inode, file, 860 DRM_IOCTL_AGP_FREE, (unsigned long)request); 861 } 862 863 typedef struct drm_agp_binding32 { 864 u32 handle; /**< From drm_agp_buffer */ 865 u32 offset; /**< In bytes -- will round to page boundary */ 866 } drm_agp_binding32_t; 867 868 static int compat_drm_agp_bind(struct file *file, unsigned int cmd, 869 unsigned long arg) 870 { 871 drm_agp_binding32_t __user *argp = (void __user *)arg; 872 drm_agp_binding32_t req32; 873 struct drm_agp_binding __user *request; 874 875 if (copy_from_user(&req32, argp, sizeof(req32))) 876 return -EFAULT; 877 878 request = compat_alloc_user_space(sizeof(*request)); 879 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 880 || __put_user(req32.handle, &request->handle) 881 || __put_user(req32.offset, &request->offset)) 882 return -EFAULT; 883 884 return drm_ioctl(file->f_path.dentry->d_inode, file, 885 DRM_IOCTL_AGP_BIND, (unsigned long)request); 886 } 887 888 static int compat_drm_agp_unbind(struct file *file, unsigned int cmd, 889 unsigned long arg) 890 { 891 drm_agp_binding32_t __user *argp = (void __user *)arg; 892 struct drm_agp_binding __user *request; 893 u32 handle; 894 895 request = compat_alloc_user_space(sizeof(*request)); 896 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 897 || get_user(handle, &argp->handle) 898 || __put_user(handle, &request->handle)) 899 return -EFAULT; 900 901 return drm_ioctl(file->f_path.dentry->d_inode, file, 902 DRM_IOCTL_AGP_UNBIND, (unsigned long)request); 903 } 904 #endif /* __OS_HAS_AGP */ 905 906 typedef struct drm_scatter_gather32 { 907 u32 size; /**< In bytes -- will round to page boundary */ 908 u32 handle; /**< Used for mapping / unmapping */ 909 } drm_scatter_gather32_t; 910 911 static int compat_drm_sg_alloc(struct file *file, unsigned int cmd, 912 unsigned long arg) 913 { 914 drm_scatter_gather32_t __user *argp = (void __user *)arg; 915 struct drm_scatter_gather __user *request; 916 int err; 917 unsigned long x; 918 919 request = compat_alloc_user_space(sizeof(*request)); 920 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 921 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)) 922 || __get_user(x, &argp->size) 923 || __put_user(x, &request->size)) 924 return -EFAULT; 925 926 err = drm_ioctl(file->f_path.dentry->d_inode, file, 927 DRM_IOCTL_SG_ALLOC, (unsigned long)request); 928 if (err) 929 return err; 930 931 /* XXX not sure about the handle conversion here... */ 932 if (__get_user(x, &request->handle) 933 || __put_user(x >> PAGE_SHIFT, &argp->handle)) 934 return -EFAULT; 935 936 return 0; 937 } 938 939 static int compat_drm_sg_free(struct file *file, unsigned int cmd, 940 unsigned long arg) 941 { 942 drm_scatter_gather32_t __user *argp = (void __user *)arg; 943 struct drm_scatter_gather __user *request; 944 unsigned long x; 945 946 request = compat_alloc_user_space(sizeof(*request)); 947 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 948 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)) 949 || __get_user(x, &argp->handle) 950 || __put_user(x << PAGE_SHIFT, &request->handle)) 951 return -EFAULT; 952 953 return drm_ioctl(file->f_path.dentry->d_inode, file, 954 DRM_IOCTL_SG_FREE, (unsigned long)request); 955 } 956 957 #if defined(CONFIG_X86) || defined(CONFIG_IA64) 958 typedef struct drm_update_draw32 { 959 drm_drawable_t handle; 960 unsigned int type; 961 unsigned int num; 962 /* 64-bit version has a 32-bit pad here */ 963 u64 data; /**< Pointer */ 964 } __attribute__((packed)) drm_update_draw32_t; 965 966 static int compat_drm_update_draw(struct file *file, unsigned int cmd, 967 unsigned long arg) 968 { 969 drm_update_draw32_t update32; 970 struct drm_update_draw __user *request; 971 int err; 972 973 if (copy_from_user(&update32, (void __user *)arg, sizeof(update32))) 974 return -EFAULT; 975 976 request = compat_alloc_user_space(sizeof(*request)); 977 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) || 978 __put_user(update32.handle, &request->handle) || 979 __put_user(update32.type, &request->type) || 980 __put_user(update32.num, &request->num) || 981 __put_user(update32.data, &request->data)) 982 return -EFAULT; 983 984 err = drm_ioctl(file->f_path.dentry->d_inode, file, 985 DRM_IOCTL_UPDATE_DRAW, (unsigned long)request); 986 return err; 987 } 988 #endif 989 990 struct drm_wait_vblank_request32 { 991 enum drm_vblank_seq_type type; 992 unsigned int sequence; 993 u32 signal; 994 }; 995 996 struct drm_wait_vblank_reply32 { 997 enum drm_vblank_seq_type type; 998 unsigned int sequence; 999 s32 tval_sec; 1000 s32 tval_usec; 1001 }; 1002 1003 typedef union drm_wait_vblank32 { 1004 struct drm_wait_vblank_request32 request; 1005 struct drm_wait_vblank_reply32 reply; 1006 } drm_wait_vblank32_t; 1007 1008 static int compat_drm_wait_vblank(struct file *file, unsigned int cmd, 1009 unsigned long arg) 1010 { 1011 drm_wait_vblank32_t __user *argp = (void __user *)arg; 1012 drm_wait_vblank32_t req32; 1013 union drm_wait_vblank __user *request; 1014 int err; 1015 1016 if (copy_from_user(&req32, argp, sizeof(req32))) 1017 return -EFAULT; 1018 1019 request = compat_alloc_user_space(sizeof(*request)); 1020 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 1021 || __put_user(req32.request.type, &request->request.type) 1022 || __put_user(req32.request.sequence, &request->request.sequence) 1023 || __put_user(req32.request.signal, &request->request.signal)) 1024 return -EFAULT; 1025 1026 err = drm_ioctl(file->f_path.dentry->d_inode, file, 1027 DRM_IOCTL_WAIT_VBLANK, (unsigned long)request); 1028 if (err) 1029 return err; 1030 1031 if (__get_user(req32.reply.type, &request->reply.type) 1032 || __get_user(req32.reply.sequence, &request->reply.sequence) 1033 || __get_user(req32.reply.tval_sec, &request->reply.tval_sec) 1034 || __get_user(req32.reply.tval_usec, &request->reply.tval_usec)) 1035 return -EFAULT; 1036 1037 if (copy_to_user(argp, &req32, sizeof(req32))) 1038 return -EFAULT; 1039 1040 return 0; 1041 } 1042 1043 drm_ioctl_compat_t *drm_compat_ioctls[] = { 1044 [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version, 1045 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique, 1046 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap, 1047 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient, 1048 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats, 1049 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique, 1050 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap, 1051 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs, 1052 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs, 1053 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs, 1054 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs, 1055 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs, 1056 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap, 1057 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx, 1058 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx, 1059 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx, 1060 [DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma, 1061 #if __OS_HAS_AGP 1062 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable, 1063 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info, 1064 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc, 1065 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free, 1066 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind, 1067 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind, 1068 #endif 1069 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc, 1070 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free, 1071 #if defined(CONFIG_X86) || defined(CONFIG_IA64) 1072 [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw, 1073 #endif 1074 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank, 1075 }; 1076 1077 /** 1078 * Called whenever a 32-bit process running under a 64-bit kernel 1079 * performs an ioctl on /dev/drm. 1080 * 1081 * \param file_priv DRM file private. 1082 * \param cmd command. 1083 * \param arg user argument. 1084 * \return zero on success or negative number on failure. 1085 */ 1086 long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 1087 { 1088 unsigned int nr = DRM_IOCTL_NR(cmd); 1089 drm_ioctl_compat_t *fn; 1090 int ret; 1091 1092 /* Assume that ioctls without an explicit compat routine will just 1093 * work. This may not always be a good assumption, but it's better 1094 * than always failing. 1095 */ 1096 if (nr >= ARRAY_SIZE(drm_compat_ioctls)) 1097 return drm_ioctl(filp->f_dentry->d_inode, filp, cmd, arg); 1098 1099 fn = drm_compat_ioctls[nr]; 1100 1101 lock_kernel(); /* XXX for now */ 1102 if (fn != NULL) 1103 ret = (*fn) (filp, cmd, arg); 1104 else 1105 ret = drm_ioctl(filp->f_path.dentry->d_inode, filp, cmd, arg); 1106 unlock_kernel(); 1107 1108 return ret; 1109 } 1110 1111 EXPORT_SYMBOL(drm_compat_ioctl); 1112