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, 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, DRM_IOCTL_GET_UNIQUE, (unsigned long)u); 149 if (err) 150 return err; 151 152 if (__get_user(uq32.unique_len, &u->unique_len)) 153 return -EFAULT; 154 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32))) 155 return -EFAULT; 156 return 0; 157 } 158 159 static int compat_drm_setunique(struct file *file, unsigned int cmd, 160 unsigned long arg) 161 { 162 drm_unique32_t uq32; 163 struct drm_unique __user *u; 164 165 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32))) 166 return -EFAULT; 167 168 u = compat_alloc_user_space(sizeof(*u)); 169 if (!access_ok(VERIFY_WRITE, u, sizeof(*u))) 170 return -EFAULT; 171 if (__put_user(uq32.unique_len, &u->unique_len) 172 || __put_user((void __user *)(unsigned long)uq32.unique, 173 &u->unique)) 174 return -EFAULT; 175 176 return drm_ioctl(file, 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 enum drm_map_type type; /**< Type of memory to map */ 183 enum drm_map_flags 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 struct drm_map __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, DRM_IOCTL_GET_MAP, (unsigned long)map); 207 if (err) 208 return err; 209 210 if (__get_user(m32.offset, &map->offset) 211 || __get_user(m32.size, &map->size) 212 || __get_user(m32.type, &map->type) 213 || __get_user(m32.flags, &map->flags) 214 || __get_user(handle, &map->handle) 215 || __get_user(m32.mtrr, &map->mtrr)) 216 return -EFAULT; 217 218 m32.handle = (unsigned long)handle; 219 if (copy_to_user(argp, &m32, sizeof(m32))) 220 return -EFAULT; 221 return 0; 222 223 } 224 225 static int compat_drm_addmap(struct file *file, unsigned int cmd, 226 unsigned long arg) 227 { 228 drm_map32_t __user *argp = (void __user *)arg; 229 drm_map32_t m32; 230 struct drm_map __user *map; 231 int err; 232 void *handle; 233 234 if (copy_from_user(&m32, argp, sizeof(m32))) 235 return -EFAULT; 236 237 map = compat_alloc_user_space(sizeof(*map)); 238 if (!access_ok(VERIFY_WRITE, map, sizeof(*map))) 239 return -EFAULT; 240 if (__put_user(m32.offset, &map->offset) 241 || __put_user(m32.size, &map->size) 242 || __put_user(m32.type, &map->type) 243 || __put_user(m32.flags, &map->flags)) 244 return -EFAULT; 245 246 err = drm_ioctl(file, DRM_IOCTL_ADD_MAP, (unsigned long)map); 247 if (err) 248 return err; 249 250 if (__get_user(m32.offset, &map->offset) 251 || __get_user(m32.mtrr, &map->mtrr) 252 || __get_user(handle, &map->handle)) 253 return -EFAULT; 254 255 m32.handle = (unsigned long)handle; 256 if (m32.handle != (unsigned long)handle && printk_ratelimit()) 257 printk(KERN_ERR "compat_drm_addmap truncated handle" 258 " %p for type %d offset %x\n", 259 handle, m32.type, m32.offset); 260 261 if (copy_to_user(argp, &m32, sizeof(m32))) 262 return -EFAULT; 263 264 return 0; 265 } 266 267 static int compat_drm_rmmap(struct file *file, unsigned int cmd, 268 unsigned long arg) 269 { 270 drm_map32_t __user *argp = (void __user *)arg; 271 struct drm_map __user *map; 272 u32 handle; 273 274 if (get_user(handle, &argp->handle)) 275 return -EFAULT; 276 277 map = compat_alloc_user_space(sizeof(*map)); 278 if (!access_ok(VERIFY_WRITE, map, sizeof(*map))) 279 return -EFAULT; 280 if (__put_user((void *)(unsigned long)handle, &map->handle)) 281 return -EFAULT; 282 283 return drm_ioctl(file, DRM_IOCTL_RM_MAP, (unsigned long)map); 284 } 285 286 typedef struct drm_client32 { 287 int idx; /**< Which client desired? */ 288 int auth; /**< Is client authenticated? */ 289 u32 pid; /**< Process ID */ 290 u32 uid; /**< User ID */ 291 u32 magic; /**< Magic */ 292 u32 iocs; /**< Ioctl count */ 293 } drm_client32_t; 294 295 static int compat_drm_getclient(struct file *file, unsigned int cmd, 296 unsigned long arg) 297 { 298 drm_client32_t c32; 299 drm_client32_t __user *argp = (void __user *)arg; 300 struct drm_client __user *client; 301 int idx, err; 302 303 if (get_user(idx, &argp->idx)) 304 return -EFAULT; 305 306 client = compat_alloc_user_space(sizeof(*client)); 307 if (!access_ok(VERIFY_WRITE, client, sizeof(*client))) 308 return -EFAULT; 309 if (__put_user(idx, &client->idx)) 310 return -EFAULT; 311 312 err = drm_ioctl(file, DRM_IOCTL_GET_CLIENT, (unsigned long)client); 313 if (err) 314 return err; 315 316 if (__get_user(c32.auth, &client->auth) 317 || __get_user(c32.pid, &client->pid) 318 || __get_user(c32.uid, &client->uid) 319 || __get_user(c32.magic, &client->magic) 320 || __get_user(c32.iocs, &client->iocs)) 321 return -EFAULT; 322 323 if (copy_to_user(argp, &c32, sizeof(c32))) 324 return -EFAULT; 325 return 0; 326 } 327 328 typedef struct drm_stats32 { 329 u32 count; 330 struct { 331 u32 value; 332 enum drm_stat_type type; 333 } data[15]; 334 } drm_stats32_t; 335 336 static int compat_drm_getstats(struct file *file, unsigned int cmd, 337 unsigned long arg) 338 { 339 drm_stats32_t s32; 340 drm_stats32_t __user *argp = (void __user *)arg; 341 struct drm_stats __user *stats; 342 int i, err; 343 344 stats = compat_alloc_user_space(sizeof(*stats)); 345 if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats))) 346 return -EFAULT; 347 348 err = drm_ioctl(file, DRM_IOCTL_GET_STATS, (unsigned long)stats); 349 if (err) 350 return err; 351 352 if (__get_user(s32.count, &stats->count)) 353 return -EFAULT; 354 for (i = 0; i < 15; ++i) 355 if (__get_user(s32.data[i].value, &stats->data[i].value) 356 || __get_user(s32.data[i].type, &stats->data[i].type)) 357 return -EFAULT; 358 359 if (copy_to_user(argp, &s32, sizeof(s32))) 360 return -EFAULT; 361 return 0; 362 } 363 364 typedef struct drm_buf_desc32 { 365 int count; /**< Number of buffers of this size */ 366 int size; /**< Size in bytes */ 367 int low_mark; /**< Low water mark */ 368 int high_mark; /**< High water mark */ 369 int flags; 370 u32 agp_start; /**< Start address in the AGP aperture */ 371 } drm_buf_desc32_t; 372 373 static int compat_drm_addbufs(struct file *file, unsigned int cmd, 374 unsigned long arg) 375 { 376 drm_buf_desc32_t __user *argp = (void __user *)arg; 377 struct drm_buf_desc __user *buf; 378 int err; 379 unsigned long agp_start; 380 381 buf = compat_alloc_user_space(sizeof(*buf)); 382 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)) 383 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))) 384 return -EFAULT; 385 386 if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start)) 387 || __get_user(agp_start, &argp->agp_start) 388 || __put_user(agp_start, &buf->agp_start)) 389 return -EFAULT; 390 391 err = drm_ioctl(file, DRM_IOCTL_ADD_BUFS, (unsigned long)buf); 392 if (err) 393 return err; 394 395 if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start)) 396 || __get_user(agp_start, &buf->agp_start) 397 || __put_user(agp_start, &argp->agp_start)) 398 return -EFAULT; 399 400 return 0; 401 } 402 403 static int compat_drm_markbufs(struct file *file, unsigned int cmd, 404 unsigned long arg) 405 { 406 drm_buf_desc32_t b32; 407 drm_buf_desc32_t __user *argp = (void __user *)arg; 408 struct drm_buf_desc __user *buf; 409 410 if (copy_from_user(&b32, argp, sizeof(b32))) 411 return -EFAULT; 412 413 buf = compat_alloc_user_space(sizeof(*buf)); 414 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))) 415 return -EFAULT; 416 417 if (__put_user(b32.size, &buf->size) 418 || __put_user(b32.low_mark, &buf->low_mark) 419 || __put_user(b32.high_mark, &buf->high_mark)) 420 return -EFAULT; 421 422 return drm_ioctl(file, DRM_IOCTL_MARK_BUFS, (unsigned long)buf); 423 } 424 425 typedef struct drm_buf_info32 { 426 int count; /**< Entries in list */ 427 u32 list; 428 } drm_buf_info32_t; 429 430 static int compat_drm_infobufs(struct file *file, unsigned int cmd, 431 unsigned long arg) 432 { 433 drm_buf_info32_t req32; 434 drm_buf_info32_t __user *argp = (void __user *)arg; 435 drm_buf_desc32_t __user *to; 436 struct drm_buf_info __user *request; 437 struct drm_buf_desc __user *list; 438 size_t nbytes; 439 int i, err; 440 int count, actual; 441 442 if (copy_from_user(&req32, argp, sizeof(req32))) 443 return -EFAULT; 444 445 count = req32.count; 446 to = (drm_buf_desc32_t __user *) (unsigned long)req32.list; 447 if (count < 0) 448 count = 0; 449 if (count > 0 450 && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t))) 451 return -EFAULT; 452 453 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_desc); 454 request = compat_alloc_user_space(nbytes); 455 if (!access_ok(VERIFY_WRITE, request, nbytes)) 456 return -EFAULT; 457 list = (struct drm_buf_desc *) (request + 1); 458 459 if (__put_user(count, &request->count) 460 || __put_user(list, &request->list)) 461 return -EFAULT; 462 463 err = drm_ioctl(file, DRM_IOCTL_INFO_BUFS, (unsigned long)request); 464 if (err) 465 return err; 466 467 if (__get_user(actual, &request->count)) 468 return -EFAULT; 469 if (count >= actual) 470 for (i = 0; i < actual; ++i) 471 if (__copy_in_user(&to[i], &list[i], 472 offsetof(struct drm_buf_desc, flags))) 473 return -EFAULT; 474 475 if (__put_user(actual, &argp->count)) 476 return -EFAULT; 477 478 return 0; 479 } 480 481 typedef struct drm_buf_pub32 { 482 int idx; /**< Index into the master buffer list */ 483 int total; /**< Buffer size */ 484 int used; /**< Amount of buffer in use (for DMA) */ 485 u32 address; /**< Address of buffer */ 486 } drm_buf_pub32_t; 487 488 typedef struct drm_buf_map32 { 489 int count; /**< Length of the buffer list */ 490 u32 virtual; /**< Mmap'd area in user-virtual */ 491 u32 list; /**< Buffer information */ 492 } drm_buf_map32_t; 493 494 static int compat_drm_mapbufs(struct file *file, unsigned int cmd, 495 unsigned long arg) 496 { 497 drm_buf_map32_t __user *argp = (void __user *)arg; 498 drm_buf_map32_t req32; 499 drm_buf_pub32_t __user *list32; 500 struct drm_buf_map __user *request; 501 struct drm_buf_pub __user *list; 502 int i, err; 503 int count, actual; 504 size_t nbytes; 505 void __user *addr; 506 507 if (copy_from_user(&req32, argp, sizeof(req32))) 508 return -EFAULT; 509 count = req32.count; 510 list32 = (void __user *)(unsigned long)req32.list; 511 512 if (count < 0) 513 return -EINVAL; 514 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub); 515 request = compat_alloc_user_space(nbytes); 516 if (!access_ok(VERIFY_WRITE, request, nbytes)) 517 return -EFAULT; 518 list = (struct drm_buf_pub *) (request + 1); 519 520 if (__put_user(count, &request->count) 521 || __put_user(list, &request->list)) 522 return -EFAULT; 523 524 err = drm_ioctl(file, DRM_IOCTL_MAP_BUFS, (unsigned long)request); 525 if (err) 526 return err; 527 528 if (__get_user(actual, &request->count)) 529 return -EFAULT; 530 if (count >= actual) 531 for (i = 0; i < actual; ++i) 532 if (__copy_in_user(&list32[i], &list[i], 533 offsetof(struct drm_buf_pub, address)) 534 || __get_user(addr, &list[i].address) 535 || __put_user((unsigned long)addr, 536 &list32[i].address)) 537 return -EFAULT; 538 539 if (__put_user(actual, &argp->count) 540 || __get_user(addr, &request->virtual) 541 || __put_user((unsigned long)addr, &argp->virtual)) 542 return -EFAULT; 543 544 return 0; 545 } 546 547 typedef struct drm_buf_free32 { 548 int count; 549 u32 list; 550 } drm_buf_free32_t; 551 552 static int compat_drm_freebufs(struct file *file, unsigned int cmd, 553 unsigned long arg) 554 { 555 drm_buf_free32_t req32; 556 struct drm_buf_free __user *request; 557 drm_buf_free32_t __user *argp = (void __user *)arg; 558 559 if (copy_from_user(&req32, argp, sizeof(req32))) 560 return -EFAULT; 561 562 request = compat_alloc_user_space(sizeof(*request)); 563 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))) 564 return -EFAULT; 565 if (__put_user(req32.count, &request->count) 566 || __put_user((int __user *)(unsigned long)req32.list, 567 &request->list)) 568 return -EFAULT; 569 570 return drm_ioctl(file, DRM_IOCTL_FREE_BUFS, (unsigned long)request); 571 } 572 573 typedef struct drm_ctx_priv_map32 { 574 unsigned int ctx_id; /**< Context requesting private mapping */ 575 u32 handle; /**< Handle of map */ 576 } drm_ctx_priv_map32_t; 577 578 static int compat_drm_setsareactx(struct file *file, unsigned int cmd, 579 unsigned long arg) 580 { 581 drm_ctx_priv_map32_t req32; 582 struct drm_ctx_priv_map __user *request; 583 drm_ctx_priv_map32_t __user *argp = (void __user *)arg; 584 585 if (copy_from_user(&req32, argp, sizeof(req32))) 586 return -EFAULT; 587 588 request = compat_alloc_user_space(sizeof(*request)); 589 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))) 590 return -EFAULT; 591 if (__put_user(req32.ctx_id, &request->ctx_id) 592 || __put_user((void *)(unsigned long)req32.handle, 593 &request->handle)) 594 return -EFAULT; 595 596 return drm_ioctl(file, DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request); 597 } 598 599 static int compat_drm_getsareactx(struct file *file, unsigned int cmd, 600 unsigned long arg) 601 { 602 struct drm_ctx_priv_map __user *request; 603 drm_ctx_priv_map32_t __user *argp = (void __user *)arg; 604 int err; 605 unsigned int ctx_id; 606 void *handle; 607 608 if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp)) 609 || __get_user(ctx_id, &argp->ctx_id)) 610 return -EFAULT; 611 612 request = compat_alloc_user_space(sizeof(*request)); 613 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))) 614 return -EFAULT; 615 if (__put_user(ctx_id, &request->ctx_id)) 616 return -EFAULT; 617 618 err = drm_ioctl(file, DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request); 619 if (err) 620 return err; 621 622 if (__get_user(handle, &request->handle) 623 || __put_user((unsigned long)handle, &argp->handle)) 624 return -EFAULT; 625 626 return 0; 627 } 628 629 typedef struct drm_ctx_res32 { 630 int count; 631 u32 contexts; 632 } drm_ctx_res32_t; 633 634 static int compat_drm_resctx(struct file *file, unsigned int cmd, 635 unsigned long arg) 636 { 637 drm_ctx_res32_t __user *argp = (void __user *)arg; 638 drm_ctx_res32_t res32; 639 struct drm_ctx_res __user *res; 640 int err; 641 642 if (copy_from_user(&res32, argp, sizeof(res32))) 643 return -EFAULT; 644 645 res = compat_alloc_user_space(sizeof(*res)); 646 if (!access_ok(VERIFY_WRITE, res, sizeof(*res))) 647 return -EFAULT; 648 if (__put_user(res32.count, &res->count) 649 || __put_user((struct drm_ctx __user *) (unsigned long)res32.contexts, 650 &res->contexts)) 651 return -EFAULT; 652 653 err = drm_ioctl(file, DRM_IOCTL_RES_CTX, (unsigned long)res); 654 if (err) 655 return err; 656 657 if (__get_user(res32.count, &res->count) 658 || __put_user(res32.count, &argp->count)) 659 return -EFAULT; 660 661 return 0; 662 } 663 664 typedef struct drm_dma32 { 665 int context; /**< Context handle */ 666 int send_count; /**< Number of buffers to send */ 667 u32 send_indices; /**< List of handles to buffers */ 668 u32 send_sizes; /**< Lengths of data to send */ 669 enum drm_dma_flags flags; /**< Flags */ 670 int request_count; /**< Number of buffers requested */ 671 int request_size; /**< Desired size for buffers */ 672 u32 request_indices; /**< Buffer information */ 673 u32 request_sizes; 674 int granted_count; /**< Number of buffers granted */ 675 } drm_dma32_t; 676 677 static int compat_drm_dma(struct file *file, unsigned int cmd, 678 unsigned long arg) 679 { 680 drm_dma32_t d32; 681 drm_dma32_t __user *argp = (void __user *)arg; 682 struct drm_dma __user *d; 683 int err; 684 685 if (copy_from_user(&d32, argp, sizeof(d32))) 686 return -EFAULT; 687 688 d = compat_alloc_user_space(sizeof(*d)); 689 if (!access_ok(VERIFY_WRITE, d, sizeof(*d))) 690 return -EFAULT; 691 692 if (__put_user(d32.context, &d->context) 693 || __put_user(d32.send_count, &d->send_count) 694 || __put_user((int __user *)(unsigned long)d32.send_indices, 695 &d->send_indices) 696 || __put_user((int __user *)(unsigned long)d32.send_sizes, 697 &d->send_sizes) 698 || __put_user(d32.flags, &d->flags) 699 || __put_user(d32.request_count, &d->request_count) 700 || __put_user((int __user *)(unsigned long)d32.request_indices, 701 &d->request_indices) 702 || __put_user((int __user *)(unsigned long)d32.request_sizes, 703 &d->request_sizes)) 704 return -EFAULT; 705 706 err = drm_ioctl(file, DRM_IOCTL_DMA, (unsigned long)d); 707 if (err) 708 return err; 709 710 if (__get_user(d32.request_size, &d->request_size) 711 || __get_user(d32.granted_count, &d->granted_count) 712 || __put_user(d32.request_size, &argp->request_size) 713 || __put_user(d32.granted_count, &argp->granted_count)) 714 return -EFAULT; 715 716 return 0; 717 } 718 719 #if __OS_HAS_AGP 720 typedef struct drm_agp_mode32 { 721 u32 mode; /**< AGP mode */ 722 } drm_agp_mode32_t; 723 724 static int compat_drm_agp_enable(struct file *file, unsigned int cmd, 725 unsigned long arg) 726 { 727 drm_agp_mode32_t __user *argp = (void __user *)arg; 728 drm_agp_mode32_t m32; 729 struct drm_agp_mode __user *mode; 730 731 if (get_user(m32.mode, &argp->mode)) 732 return -EFAULT; 733 734 mode = compat_alloc_user_space(sizeof(*mode)); 735 if (put_user(m32.mode, &mode->mode)) 736 return -EFAULT; 737 738 return drm_ioctl(file, DRM_IOCTL_AGP_ENABLE, (unsigned long)mode); 739 } 740 741 typedef struct drm_agp_info32 { 742 int agp_version_major; 743 int agp_version_minor; 744 u32 mode; 745 u32 aperture_base; /* physical address */ 746 u32 aperture_size; /* bytes */ 747 u32 memory_allowed; /* bytes */ 748 u32 memory_used; 749 750 /* PCI information */ 751 unsigned short id_vendor; 752 unsigned short id_device; 753 } drm_agp_info32_t; 754 755 static int compat_drm_agp_info(struct file *file, unsigned int cmd, 756 unsigned long arg) 757 { 758 drm_agp_info32_t __user *argp = (void __user *)arg; 759 drm_agp_info32_t i32; 760 struct drm_agp_info __user *info; 761 int err; 762 763 info = compat_alloc_user_space(sizeof(*info)); 764 if (!access_ok(VERIFY_WRITE, info, sizeof(*info))) 765 return -EFAULT; 766 767 err = drm_ioctl(file, DRM_IOCTL_AGP_INFO, (unsigned long)info); 768 if (err) 769 return err; 770 771 if (__get_user(i32.agp_version_major, &info->agp_version_major) 772 || __get_user(i32.agp_version_minor, &info->agp_version_minor) 773 || __get_user(i32.mode, &info->mode) 774 || __get_user(i32.aperture_base, &info->aperture_base) 775 || __get_user(i32.aperture_size, &info->aperture_size) 776 || __get_user(i32.memory_allowed, &info->memory_allowed) 777 || __get_user(i32.memory_used, &info->memory_used) 778 || __get_user(i32.id_vendor, &info->id_vendor) 779 || __get_user(i32.id_device, &info->id_device)) 780 return -EFAULT; 781 782 if (copy_to_user(argp, &i32, sizeof(i32))) 783 return -EFAULT; 784 785 return 0; 786 } 787 788 typedef struct drm_agp_buffer32 { 789 u32 size; /**< In bytes -- will round to page boundary */ 790 u32 handle; /**< Used for binding / unbinding */ 791 u32 type; /**< Type of memory to allocate */ 792 u32 physical; /**< Physical used by i810 */ 793 } drm_agp_buffer32_t; 794 795 static int compat_drm_agp_alloc(struct file *file, unsigned int cmd, 796 unsigned long arg) 797 { 798 drm_agp_buffer32_t __user *argp = (void __user *)arg; 799 drm_agp_buffer32_t req32; 800 struct drm_agp_buffer __user *request; 801 int err; 802 803 if (copy_from_user(&req32, argp, sizeof(req32))) 804 return -EFAULT; 805 806 request = compat_alloc_user_space(sizeof(*request)); 807 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 808 || __put_user(req32.size, &request->size) 809 || __put_user(req32.type, &request->type)) 810 return -EFAULT; 811 812 err = drm_ioctl(file, DRM_IOCTL_AGP_ALLOC, (unsigned long)request); 813 if (err) 814 return err; 815 816 if (__get_user(req32.handle, &request->handle) 817 || __get_user(req32.physical, &request->physical) 818 || copy_to_user(argp, &req32, sizeof(req32))) { 819 drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request); 820 return -EFAULT; 821 } 822 823 return 0; 824 } 825 826 static int compat_drm_agp_free(struct file *file, unsigned int cmd, 827 unsigned long arg) 828 { 829 drm_agp_buffer32_t __user *argp = (void __user *)arg; 830 struct drm_agp_buffer __user *request; 831 u32 handle; 832 833 request = compat_alloc_user_space(sizeof(*request)); 834 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 835 || get_user(handle, &argp->handle) 836 || __put_user(handle, &request->handle)) 837 return -EFAULT; 838 839 return drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request); 840 } 841 842 typedef struct drm_agp_binding32 { 843 u32 handle; /**< From drm_agp_buffer */ 844 u32 offset; /**< In bytes -- will round to page boundary */ 845 } drm_agp_binding32_t; 846 847 static int compat_drm_agp_bind(struct file *file, unsigned int cmd, 848 unsigned long arg) 849 { 850 drm_agp_binding32_t __user *argp = (void __user *)arg; 851 drm_agp_binding32_t req32; 852 struct drm_agp_binding __user *request; 853 854 if (copy_from_user(&req32, argp, sizeof(req32))) 855 return -EFAULT; 856 857 request = compat_alloc_user_space(sizeof(*request)); 858 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 859 || __put_user(req32.handle, &request->handle) 860 || __put_user(req32.offset, &request->offset)) 861 return -EFAULT; 862 863 return drm_ioctl(file, DRM_IOCTL_AGP_BIND, (unsigned long)request); 864 } 865 866 static int compat_drm_agp_unbind(struct file *file, unsigned int cmd, 867 unsigned long arg) 868 { 869 drm_agp_binding32_t __user *argp = (void __user *)arg; 870 struct drm_agp_binding __user *request; 871 u32 handle; 872 873 request = compat_alloc_user_space(sizeof(*request)); 874 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 875 || get_user(handle, &argp->handle) 876 || __put_user(handle, &request->handle)) 877 return -EFAULT; 878 879 return drm_ioctl(file, DRM_IOCTL_AGP_UNBIND, (unsigned long)request); 880 } 881 #endif /* __OS_HAS_AGP */ 882 883 typedef struct drm_scatter_gather32 { 884 u32 size; /**< In bytes -- will round to page boundary */ 885 u32 handle; /**< Used for mapping / unmapping */ 886 } drm_scatter_gather32_t; 887 888 static int compat_drm_sg_alloc(struct file *file, unsigned int cmd, 889 unsigned long arg) 890 { 891 drm_scatter_gather32_t __user *argp = (void __user *)arg; 892 struct drm_scatter_gather __user *request; 893 int err; 894 unsigned long x; 895 896 request = compat_alloc_user_space(sizeof(*request)); 897 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 898 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)) 899 || __get_user(x, &argp->size) 900 || __put_user(x, &request->size)) 901 return -EFAULT; 902 903 err = drm_ioctl(file, DRM_IOCTL_SG_ALLOC, (unsigned long)request); 904 if (err) 905 return err; 906 907 /* XXX not sure about the handle conversion here... */ 908 if (__get_user(x, &request->handle) 909 || __put_user(x >> PAGE_SHIFT, &argp->handle)) 910 return -EFAULT; 911 912 return 0; 913 } 914 915 static int compat_drm_sg_free(struct file *file, unsigned int cmd, 916 unsigned long arg) 917 { 918 drm_scatter_gather32_t __user *argp = (void __user *)arg; 919 struct drm_scatter_gather __user *request; 920 unsigned long x; 921 922 request = compat_alloc_user_space(sizeof(*request)); 923 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 924 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)) 925 || __get_user(x, &argp->handle) 926 || __put_user(x << PAGE_SHIFT, &request->handle)) 927 return -EFAULT; 928 929 return drm_ioctl(file, DRM_IOCTL_SG_FREE, (unsigned long)request); 930 } 931 932 #if defined(CONFIG_X86) || defined(CONFIG_IA64) 933 typedef struct drm_update_draw32 { 934 drm_drawable_t handle; 935 unsigned int type; 936 unsigned int num; 937 /* 64-bit version has a 32-bit pad here */ 938 u64 data; /**< Pointer */ 939 } __attribute__((packed)) drm_update_draw32_t; 940 941 static int compat_drm_update_draw(struct file *file, unsigned int cmd, 942 unsigned long arg) 943 { 944 drm_update_draw32_t update32; 945 struct drm_update_draw __user *request; 946 int err; 947 948 if (copy_from_user(&update32, (void __user *)arg, sizeof(update32))) 949 return -EFAULT; 950 951 request = compat_alloc_user_space(sizeof(*request)); 952 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) || 953 __put_user(update32.handle, &request->handle) || 954 __put_user(update32.type, &request->type) || 955 __put_user(update32.num, &request->num) || 956 __put_user(update32.data, &request->data)) 957 return -EFAULT; 958 959 err = drm_ioctl(file, DRM_IOCTL_UPDATE_DRAW, (unsigned long)request); 960 return err; 961 } 962 #endif 963 964 struct drm_wait_vblank_request32 { 965 enum drm_vblank_seq_type type; 966 unsigned int sequence; 967 u32 signal; 968 }; 969 970 struct drm_wait_vblank_reply32 { 971 enum drm_vblank_seq_type type; 972 unsigned int sequence; 973 s32 tval_sec; 974 s32 tval_usec; 975 }; 976 977 typedef union drm_wait_vblank32 { 978 struct drm_wait_vblank_request32 request; 979 struct drm_wait_vblank_reply32 reply; 980 } drm_wait_vblank32_t; 981 982 static int compat_drm_wait_vblank(struct file *file, unsigned int cmd, 983 unsigned long arg) 984 { 985 drm_wait_vblank32_t __user *argp = (void __user *)arg; 986 drm_wait_vblank32_t req32; 987 union drm_wait_vblank __user *request; 988 int err; 989 990 if (copy_from_user(&req32, argp, sizeof(req32))) 991 return -EFAULT; 992 993 request = compat_alloc_user_space(sizeof(*request)); 994 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 995 || __put_user(req32.request.type, &request->request.type) 996 || __put_user(req32.request.sequence, &request->request.sequence) 997 || __put_user(req32.request.signal, &request->request.signal)) 998 return -EFAULT; 999 1000 err = drm_ioctl(file, DRM_IOCTL_WAIT_VBLANK, (unsigned long)request); 1001 if (err) 1002 return err; 1003 1004 if (__get_user(req32.reply.type, &request->reply.type) 1005 || __get_user(req32.reply.sequence, &request->reply.sequence) 1006 || __get_user(req32.reply.tval_sec, &request->reply.tval_sec) 1007 || __get_user(req32.reply.tval_usec, &request->reply.tval_usec)) 1008 return -EFAULT; 1009 1010 if (copy_to_user(argp, &req32, sizeof(req32))) 1011 return -EFAULT; 1012 1013 return 0; 1014 } 1015 1016 drm_ioctl_compat_t *drm_compat_ioctls[] = { 1017 [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version, 1018 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique, 1019 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap, 1020 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient, 1021 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats, 1022 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique, 1023 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap, 1024 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs, 1025 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs, 1026 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs, 1027 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs, 1028 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs, 1029 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap, 1030 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx, 1031 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx, 1032 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx, 1033 [DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma, 1034 #if __OS_HAS_AGP 1035 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable, 1036 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info, 1037 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc, 1038 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free, 1039 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind, 1040 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind, 1041 #endif 1042 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc, 1043 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free, 1044 #if defined(CONFIG_X86) || defined(CONFIG_IA64) 1045 [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw, 1046 #endif 1047 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank, 1048 }; 1049 1050 /** 1051 * Called whenever a 32-bit process running under a 64-bit kernel 1052 * performs an ioctl on /dev/drm. 1053 * 1054 * \param file_priv DRM file private. 1055 * \param cmd command. 1056 * \param arg user argument. 1057 * \return zero on success or negative number on failure. 1058 */ 1059 long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 1060 { 1061 unsigned int nr = DRM_IOCTL_NR(cmd); 1062 drm_ioctl_compat_t *fn; 1063 int ret; 1064 1065 /* Assume that ioctls without an explicit compat routine will just 1066 * work. This may not always be a good assumption, but it's better 1067 * than always failing. 1068 */ 1069 if (nr >= ARRAY_SIZE(drm_compat_ioctls)) 1070 return drm_ioctl(filp, cmd, arg); 1071 1072 fn = drm_compat_ioctls[nr]; 1073 1074 if (fn != NULL) 1075 ret = (*fn) (filp, cmd, arg); 1076 else 1077 ret = drm_ioctl(filp, cmd, arg); 1078 1079 return ret; 1080 } 1081 1082 EXPORT_SYMBOL(drm_compat_ioctl); 1083