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#include <linux/ratelimit.h> 32#include <linux/export.h> 33 34#include <drm/drmP.h> 35#include <drm/drm_core.h> 36 37#define DRM_IOCTL_VERSION32 DRM_IOWR(0x00, drm_version32_t) 38#define DRM_IOCTL_GET_UNIQUE32 DRM_IOWR(0x01, drm_unique32_t) 39#define DRM_IOCTL_GET_MAP32 DRM_IOWR(0x04, drm_map32_t) 40#define DRM_IOCTL_GET_CLIENT32 DRM_IOWR(0x05, drm_client32_t) 41#define DRM_IOCTL_GET_STATS32 DRM_IOR( 0x06, drm_stats32_t) 42 43#define DRM_IOCTL_SET_UNIQUE32 DRM_IOW( 0x10, drm_unique32_t) 44#define DRM_IOCTL_ADD_MAP32 DRM_IOWR(0x15, drm_map32_t) 45#define DRM_IOCTL_ADD_BUFS32 DRM_IOWR(0x16, drm_buf_desc32_t) 46#define DRM_IOCTL_MARK_BUFS32 DRM_IOW( 0x17, drm_buf_desc32_t) 47#define DRM_IOCTL_INFO_BUFS32 DRM_IOWR(0x18, drm_buf_info32_t) 48#define DRM_IOCTL_MAP_BUFS32 DRM_IOWR(0x19, drm_buf_map32_t) 49#define DRM_IOCTL_FREE_BUFS32 DRM_IOW( 0x1a, drm_buf_free32_t) 50 51#define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t) 52 53#define DRM_IOCTL_SET_SAREA_CTX32 DRM_IOW( 0x1c, drm_ctx_priv_map32_t) 54#define DRM_IOCTL_GET_SAREA_CTX32 DRM_IOWR(0x1d, drm_ctx_priv_map32_t) 55 56#define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t) 57#define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t) 58 59#define DRM_IOCTL_AGP_ENABLE32 DRM_IOW( 0x32, drm_agp_mode32_t) 60#define DRM_IOCTL_AGP_INFO32 DRM_IOR( 0x33, drm_agp_info32_t) 61#define DRM_IOCTL_AGP_ALLOC32 DRM_IOWR(0x34, drm_agp_buffer32_t) 62#define DRM_IOCTL_AGP_FREE32 DRM_IOW( 0x35, drm_agp_buffer32_t) 63#define DRM_IOCTL_AGP_BIND32 DRM_IOW( 0x36, drm_agp_binding32_t) 64#define DRM_IOCTL_AGP_UNBIND32 DRM_IOW( 0x37, drm_agp_binding32_t) 65 66#define DRM_IOCTL_SG_ALLOC32 DRM_IOW( 0x38, drm_scatter_gather32_t) 67#define DRM_IOCTL_SG_FREE32 DRM_IOW( 0x39, drm_scatter_gather32_t) 68 69#define DRM_IOCTL_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t) 70 71#define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t) 72 73#define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, drm_mode_fb_cmd232_t) 74 75typedef struct drm_version_32 { 76 int version_major; /**< Major version */ 77 int version_minor; /**< Minor version */ 78 int version_patchlevel; /**< Patch level */ 79 u32 name_len; /**< Length of name buffer */ 80 u32 name; /**< Name of driver */ 81 u32 date_len; /**< Length of date buffer */ 82 u32 date; /**< User-space buffer to hold date */ 83 u32 desc_len; /**< Length of desc buffer */ 84 u32 desc; /**< User-space buffer to hold desc */ 85} drm_version32_t; 86 87static int compat_drm_version(struct file *file, unsigned int cmd, 88 unsigned long arg) 89{ 90 drm_version32_t v32; 91 struct drm_version __user *version; 92 int err; 93 94 if (copy_from_user(&v32, (void __user *)arg, sizeof(v32))) 95 return -EFAULT; 96 97 version = compat_alloc_user_space(sizeof(*version)); 98 if (!access_ok(VERIFY_WRITE, version, sizeof(*version))) 99 return -EFAULT; 100 if (__put_user(v32.name_len, &version->name_len) 101 || __put_user((void __user *)(unsigned long)v32.name, 102 &version->name) 103 || __put_user(v32.date_len, &version->date_len) 104 || __put_user((void __user *)(unsigned long)v32.date, 105 &version->date) 106 || __put_user(v32.desc_len, &version->desc_len) 107 || __put_user((void __user *)(unsigned long)v32.desc, 108 &version->desc)) 109 return -EFAULT; 110 111 err = drm_ioctl(file, 112 DRM_IOCTL_VERSION, (unsigned long)version); 113 if (err) 114 return err; 115 116 if (__get_user(v32.version_major, &version->version_major) 117 || __get_user(v32.version_minor, &version->version_minor) 118 || __get_user(v32.version_patchlevel, &version->version_patchlevel) 119 || __get_user(v32.name_len, &version->name_len) 120 || __get_user(v32.date_len, &version->date_len) 121 || __get_user(v32.desc_len, &version->desc_len)) 122 return -EFAULT; 123 124 if (copy_to_user((void __user *)arg, &v32, sizeof(v32))) 125 return -EFAULT; 126 return 0; 127} 128 129typedef struct drm_unique32 { 130 u32 unique_len; /**< Length of unique */ 131 u32 unique; /**< Unique name for driver instantiation */ 132} drm_unique32_t; 133 134static int compat_drm_getunique(struct file *file, unsigned int cmd, 135 unsigned long arg) 136{ 137 drm_unique32_t uq32; 138 struct drm_unique __user *u; 139 int err; 140 141 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32))) 142 return -EFAULT; 143 144 u = compat_alloc_user_space(sizeof(*u)); 145 if (!access_ok(VERIFY_WRITE, u, sizeof(*u))) 146 return -EFAULT; 147 if (__put_user(uq32.unique_len, &u->unique_len) 148 || __put_user((void __user *)(unsigned long)uq32.unique, 149 &u->unique)) 150 return -EFAULT; 151 152 err = drm_ioctl(file, DRM_IOCTL_GET_UNIQUE, (unsigned long)u); 153 if (err) 154 return err; 155 156 if (__get_user(uq32.unique_len, &u->unique_len)) 157 return -EFAULT; 158 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32))) 159 return -EFAULT; 160 return 0; 161} 162 163static int compat_drm_setunique(struct file *file, unsigned int cmd, 164 unsigned long arg) 165{ 166 drm_unique32_t uq32; 167 struct drm_unique __user *u; 168 169 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32))) 170 return -EFAULT; 171 172 u = compat_alloc_user_space(sizeof(*u)); 173 if (!access_ok(VERIFY_WRITE, u, sizeof(*u))) 174 return -EFAULT; 175 if (__put_user(uq32.unique_len, &u->unique_len) 176 || __put_user((void __user *)(unsigned long)uq32.unique, 177 &u->unique)) 178 return -EFAULT; 179 180 return drm_ioctl(file, DRM_IOCTL_SET_UNIQUE, (unsigned long)u); 181} 182 183typedef struct drm_map32 { 184 u32 offset; /**< Requested physical address (0 for SAREA)*/ 185 u32 size; /**< Requested physical size (bytes) */ 186 enum drm_map_type type; /**< Type of memory to map */ 187 enum drm_map_flags flags; /**< Flags */ 188 u32 handle; /**< User-space: "Handle" to pass to mmap() */ 189 int mtrr; /**< MTRR slot used */ 190} drm_map32_t; 191 192static int compat_drm_getmap(struct file *file, unsigned int cmd, 193 unsigned long arg) 194{ 195 drm_map32_t __user *argp = (void __user *)arg; 196 drm_map32_t m32; 197 struct drm_map __user *map; 198 int idx, err; 199 void *handle; 200 201 if (get_user(idx, &argp->offset)) 202 return -EFAULT; 203 204 map = compat_alloc_user_space(sizeof(*map)); 205 if (!access_ok(VERIFY_WRITE, map, sizeof(*map))) 206 return -EFAULT; 207 if (__put_user(idx, &map->offset)) 208 return -EFAULT; 209 210 err = drm_ioctl(file, DRM_IOCTL_GET_MAP, (unsigned long)map); 211 if (err) 212 return err; 213 214 if (__get_user(m32.offset, &map->offset) 215 || __get_user(m32.size, &map->size) 216 || __get_user(m32.type, &map->type) 217 || __get_user(m32.flags, &map->flags) 218 || __get_user(handle, &map->handle) 219 || __get_user(m32.mtrr, &map->mtrr)) 220 return -EFAULT; 221 222 m32.handle = (unsigned long)handle; 223 if (copy_to_user(argp, &m32, sizeof(m32))) 224 return -EFAULT; 225 return 0; 226 227} 228 229static int compat_drm_addmap(struct file *file, unsigned int cmd, 230 unsigned long arg) 231{ 232 drm_map32_t __user *argp = (void __user *)arg; 233 drm_map32_t m32; 234 struct drm_map __user *map; 235 int err; 236 void *handle; 237 238 if (copy_from_user(&m32, argp, sizeof(m32))) 239 return -EFAULT; 240 241 map = compat_alloc_user_space(sizeof(*map)); 242 if (!access_ok(VERIFY_WRITE, map, sizeof(*map))) 243 return -EFAULT; 244 if (__put_user(m32.offset, &map->offset) 245 || __put_user(m32.size, &map->size) 246 || __put_user(m32.type, &map->type) 247 || __put_user(m32.flags, &map->flags)) 248 return -EFAULT; 249 250 err = drm_ioctl(file, 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) 261 printk_ratelimited(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 271static 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, DRM_IOCTL_RM_MAP, (unsigned long)map); 288} 289 290typedef struct drm_client32 { 291 int idx; /**< Which client desired? */ 292 int auth; /**< Is client authenticated? */ 293 u32 pid; /**< Process ID */ 294 u32 uid; /**< User ID */ 295 u32 magic; /**< Magic */ 296 u32 iocs; /**< Ioctl count */ 297} drm_client32_t; 298 299static int compat_drm_getclient(struct file *file, unsigned int cmd, 300 unsigned long arg) 301{ 302 drm_client32_t c32; 303 drm_client32_t __user *argp = (void __user *)arg; 304 struct drm_client __user *client; 305 int idx, err; 306 307 if (get_user(idx, &argp->idx)) 308 return -EFAULT; 309 310 client = compat_alloc_user_space(sizeof(*client)); 311 if (!access_ok(VERIFY_WRITE, client, sizeof(*client))) 312 return -EFAULT; 313 if (__put_user(idx, &client->idx)) 314 return -EFAULT; 315 316 err = drm_ioctl(file, DRM_IOCTL_GET_CLIENT, (unsigned long)client); 317 if (err) 318 return err; 319 320 if (__get_user(c32.idx, &client->idx) 321 || __get_user(c32.auth, &client->auth) 322 || __get_user(c32.pid, &client->pid) 323 || __get_user(c32.uid, &client->uid) 324 || __get_user(c32.magic, &client->magic) 325 || __get_user(c32.iocs, &client->iocs)) 326 return -EFAULT; 327 328 if (copy_to_user(argp, &c32, sizeof(c32))) 329 return -EFAULT; 330 return 0; 331} 332 333typedef struct drm_stats32 { 334 u32 count; 335 struct { 336 u32 value; 337 enum drm_stat_type type; 338 } data[15]; 339} drm_stats32_t; 340 341static int compat_drm_getstats(struct file *file, unsigned int cmd, 342 unsigned long arg) 343{ 344 drm_stats32_t s32; 345 drm_stats32_t __user *argp = (void __user *)arg; 346 struct drm_stats __user *stats; 347 int i, err; 348 349 stats = compat_alloc_user_space(sizeof(*stats)); 350 if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats))) 351 return -EFAULT; 352 353 err = drm_ioctl(file, 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 369typedef 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 378static int compat_drm_addbufs(struct file *file, unsigned int cmd, 379 unsigned long arg) 380{ 381 drm_buf_desc32_t __user *argp = (void __user *)arg; 382 struct drm_buf_desc __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, DRM_IOCTL_ADD_BUFS, (unsigned long)buf); 397 if (err) 398 return err; 399 400 if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start)) 401 || __get_user(agp_start, &buf->agp_start) 402 || __put_user(agp_start, &argp->agp_start)) 403 return -EFAULT; 404 405 return 0; 406} 407 408static int compat_drm_markbufs(struct file *file, unsigned int cmd, 409 unsigned long arg) 410{ 411 drm_buf_desc32_t b32; 412 drm_buf_desc32_t __user *argp = (void __user *)arg; 413 struct drm_buf_desc __user *buf; 414 415 if (copy_from_user(&b32, argp, sizeof(b32))) 416 return -EFAULT; 417 418 buf = compat_alloc_user_space(sizeof(*buf)); 419 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))) 420 return -EFAULT; 421 422 if (__put_user(b32.size, &buf->size) 423 || __put_user(b32.low_mark, &buf->low_mark) 424 || __put_user(b32.high_mark, &buf->high_mark)) 425 return -EFAULT; 426 427 return drm_ioctl(file, DRM_IOCTL_MARK_BUFS, (unsigned long)buf); 428} 429 430typedef struct drm_buf_info32 { 431 int count; /**< Entries in list */ 432 u32 list; 433} drm_buf_info32_t; 434 435static int compat_drm_infobufs(struct file *file, unsigned int cmd, 436 unsigned long arg) 437{ 438 drm_buf_info32_t req32; 439 drm_buf_info32_t __user *argp = (void __user *)arg; 440 drm_buf_desc32_t __user *to; 441 struct drm_buf_info __user *request; 442 struct drm_buf_desc __user *list; 443 size_t nbytes; 444 int i, err; 445 int count, actual; 446 447 if (copy_from_user(&req32, argp, sizeof(req32))) 448 return -EFAULT; 449 450 count = req32.count; 451 to = (drm_buf_desc32_t __user *) (unsigned long)req32.list; 452 if (count < 0) 453 count = 0; 454 if (count > 0 455 && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t))) 456 return -EFAULT; 457 458 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_desc); 459 request = compat_alloc_user_space(nbytes); 460 if (!access_ok(VERIFY_WRITE, request, nbytes)) 461 return -EFAULT; 462 list = (struct drm_buf_desc *) (request + 1); 463 464 if (__put_user(count, &request->count) 465 || __put_user(list, &request->list)) 466 return -EFAULT; 467 468 err = drm_ioctl(file, DRM_IOCTL_INFO_BUFS, (unsigned long)request); 469 if (err) 470 return err; 471 472 if (__get_user(actual, &request->count)) 473 return -EFAULT; 474 if (count >= actual) 475 for (i = 0; i < actual; ++i) 476 if (__copy_in_user(&to[i], &list[i], 477 offsetof(struct drm_buf_desc, flags))) 478 return -EFAULT; 479 480 if (__put_user(actual, &argp->count)) 481 return -EFAULT; 482 483 return 0; 484} 485 486typedef struct drm_buf_pub32 { 487 int idx; /**< Index into the master buffer list */ 488 int total; /**< Buffer size */ 489 int used; /**< Amount of buffer in use (for DMA) */ 490 u32 address; /**< Address of buffer */ 491} drm_buf_pub32_t; 492 493typedef struct drm_buf_map32 { 494 int count; /**< Length of the buffer list */ 495 u32 virtual; /**< Mmap'd area in user-virtual */ 496 u32 list; /**< Buffer information */ 497} drm_buf_map32_t; 498 499static int compat_drm_mapbufs(struct file *file, unsigned int cmd, 500 unsigned long arg) 501{ 502 drm_buf_map32_t __user *argp = (void __user *)arg; 503 drm_buf_map32_t req32; 504 drm_buf_pub32_t __user *list32; 505 struct drm_buf_map __user *request; 506 struct drm_buf_pub __user *list; 507 int i, err; 508 int count, actual; 509 size_t nbytes; 510 void __user *addr; 511 512 if (copy_from_user(&req32, argp, sizeof(req32))) 513 return -EFAULT; 514 count = req32.count; 515 list32 = (void __user *)(unsigned long)req32.list; 516 517 if (count < 0) 518 return -EINVAL; 519 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub); 520 request = compat_alloc_user_space(nbytes); 521 if (!access_ok(VERIFY_WRITE, request, nbytes)) 522 return -EFAULT; 523 list = (struct drm_buf_pub *) (request + 1); 524 525 if (__put_user(count, &request->count) 526 || __put_user(list, &request->list)) 527 return -EFAULT; 528 529 err = drm_ioctl(file, DRM_IOCTL_MAP_BUFS, (unsigned long)request); 530 if (err) 531 return err; 532 533 if (__get_user(actual, &request->count)) 534 return -EFAULT; 535 if (count >= actual) 536 for (i = 0; i < actual; ++i) 537 if (__copy_in_user(&list32[i], &list[i], 538 offsetof(struct drm_buf_pub, address)) 539 || __get_user(addr, &list[i].address) 540 || __put_user((unsigned long)addr, 541 &list32[i].address)) 542 return -EFAULT; 543 544 if (__put_user(actual, &argp->count) 545 || __get_user(addr, &request->virtual) 546 || __put_user((unsigned long)addr, &argp->virtual)) 547 return -EFAULT; 548 549 return 0; 550} 551 552typedef struct drm_buf_free32 { 553 int count; 554 u32 list; 555} drm_buf_free32_t; 556 557static int compat_drm_freebufs(struct file *file, unsigned int cmd, 558 unsigned long arg) 559{ 560 drm_buf_free32_t req32; 561 struct drm_buf_free __user *request; 562 drm_buf_free32_t __user *argp = (void __user *)arg; 563 564 if (copy_from_user(&req32, argp, sizeof(req32))) 565 return -EFAULT; 566 567 request = compat_alloc_user_space(sizeof(*request)); 568 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))) 569 return -EFAULT; 570 if (__put_user(req32.count, &request->count) 571 || __put_user((int __user *)(unsigned long)req32.list, 572 &request->list)) 573 return -EFAULT; 574 575 return drm_ioctl(file, DRM_IOCTL_FREE_BUFS, (unsigned long)request); 576} 577 578typedef struct drm_ctx_priv_map32 { 579 unsigned int ctx_id; /**< Context requesting private mapping */ 580 u32 handle; /**< Handle of map */ 581} drm_ctx_priv_map32_t; 582 583static int compat_drm_setsareactx(struct file *file, unsigned int cmd, 584 unsigned long arg) 585{ 586 drm_ctx_priv_map32_t req32; 587 struct drm_ctx_priv_map __user *request; 588 drm_ctx_priv_map32_t __user *argp = (void __user *)arg; 589 590 if (copy_from_user(&req32, argp, sizeof(req32))) 591 return -EFAULT; 592 593 request = compat_alloc_user_space(sizeof(*request)); 594 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))) 595 return -EFAULT; 596 if (__put_user(req32.ctx_id, &request->ctx_id) 597 || __put_user((void *)(unsigned long)req32.handle, 598 &request->handle)) 599 return -EFAULT; 600 601 return drm_ioctl(file, DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request); 602} 603 604static int compat_drm_getsareactx(struct file *file, unsigned int cmd, 605 unsigned long arg) 606{ 607 struct drm_ctx_priv_map __user *request; 608 drm_ctx_priv_map32_t __user *argp = (void __user *)arg; 609 int err; 610 unsigned int ctx_id; 611 void *handle; 612 613 if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp)) 614 || __get_user(ctx_id, &argp->ctx_id)) 615 return -EFAULT; 616 617 request = compat_alloc_user_space(sizeof(*request)); 618 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))) 619 return -EFAULT; 620 if (__put_user(ctx_id, &request->ctx_id)) 621 return -EFAULT; 622 623 err = drm_ioctl(file, DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request); 624 if (err) 625 return err; 626 627 if (__get_user(handle, &request->handle) 628 || __put_user((unsigned long)handle, &argp->handle)) 629 return -EFAULT; 630 631 return 0; 632} 633 634typedef struct drm_ctx_res32 { 635 int count; 636 u32 contexts; 637} drm_ctx_res32_t; 638 639static int compat_drm_resctx(struct file *file, unsigned int cmd, 640 unsigned long arg) 641{ 642 drm_ctx_res32_t __user *argp = (void __user *)arg; 643 drm_ctx_res32_t res32; 644 struct drm_ctx_res __user *res; 645 int err; 646 647 if (copy_from_user(&res32, argp, sizeof(res32))) 648 return -EFAULT; 649 650 res = compat_alloc_user_space(sizeof(*res)); 651 if (!access_ok(VERIFY_WRITE, res, sizeof(*res))) 652 return -EFAULT; 653 if (__put_user(res32.count, &res->count) 654 || __put_user((struct drm_ctx __user *) (unsigned long)res32.contexts, 655 &res->contexts)) 656 return -EFAULT; 657 658 err = drm_ioctl(file, DRM_IOCTL_RES_CTX, (unsigned long)res); 659 if (err) 660 return err; 661 662 if (__get_user(res32.count, &res->count) 663 || __put_user(res32.count, &argp->count)) 664 return -EFAULT; 665 666 return 0; 667} 668 669typedef struct drm_dma32 { 670 int context; /**< Context handle */ 671 int send_count; /**< Number of buffers to send */ 672 u32 send_indices; /**< List of handles to buffers */ 673 u32 send_sizes; /**< Lengths of data to send */ 674 enum drm_dma_flags flags; /**< Flags */ 675 int request_count; /**< Number of buffers requested */ 676 int request_size; /**< Desired size for buffers */ 677 u32 request_indices; /**< Buffer information */ 678 u32 request_sizes; 679 int granted_count; /**< Number of buffers granted */ 680} drm_dma32_t; 681 682static int compat_drm_dma(struct file *file, unsigned int cmd, 683 unsigned long arg) 684{ 685 drm_dma32_t d32; 686 drm_dma32_t __user *argp = (void __user *)arg; 687 struct drm_dma __user *d; 688 int err; 689 690 if (copy_from_user(&d32, argp, sizeof(d32))) 691 return -EFAULT; 692 693 d = compat_alloc_user_space(sizeof(*d)); 694 if (!access_ok(VERIFY_WRITE, d, sizeof(*d))) 695 return -EFAULT; 696 697 if (__put_user(d32.context, &d->context) 698 || __put_user(d32.send_count, &d->send_count) 699 || __put_user((int __user *)(unsigned long)d32.send_indices, 700 &d->send_indices) 701 || __put_user((int __user *)(unsigned long)d32.send_sizes, 702 &d->send_sizes) 703 || __put_user(d32.flags, &d->flags) 704 || __put_user(d32.request_count, &d->request_count) 705 || __put_user((int __user *)(unsigned long)d32.request_indices, 706 &d->request_indices) 707 || __put_user((int __user *)(unsigned long)d32.request_sizes, 708 &d->request_sizes)) 709 return -EFAULT; 710 711 err = drm_ioctl(file, DRM_IOCTL_DMA, (unsigned long)d); 712 if (err) 713 return err; 714 715 if (__get_user(d32.request_size, &d->request_size) 716 || __get_user(d32.granted_count, &d->granted_count) 717 || __put_user(d32.request_size, &argp->request_size) 718 || __put_user(d32.granted_count, &argp->granted_count)) 719 return -EFAULT; 720 721 return 0; 722} 723 724#if __OS_HAS_AGP 725typedef struct drm_agp_mode32 { 726 u32 mode; /**< AGP mode */ 727} drm_agp_mode32_t; 728 729static int compat_drm_agp_enable(struct file *file, unsigned int cmd, 730 unsigned long arg) 731{ 732 drm_agp_mode32_t __user *argp = (void __user *)arg; 733 drm_agp_mode32_t m32; 734 struct drm_agp_mode __user *mode; 735 736 if (get_user(m32.mode, &argp->mode)) 737 return -EFAULT; 738 739 mode = compat_alloc_user_space(sizeof(*mode)); 740 if (put_user(m32.mode, &mode->mode)) 741 return -EFAULT; 742 743 return drm_ioctl(file, DRM_IOCTL_AGP_ENABLE, (unsigned long)mode); 744} 745 746typedef struct drm_agp_info32 { 747 int agp_version_major; 748 int agp_version_minor; 749 u32 mode; 750 u32 aperture_base; /* physical address */ 751 u32 aperture_size; /* bytes */ 752 u32 memory_allowed; /* bytes */ 753 u32 memory_used; 754 755 /* PCI information */ 756 unsigned short id_vendor; 757 unsigned short id_device; 758} drm_agp_info32_t; 759 760static int compat_drm_agp_info(struct file *file, unsigned int cmd, 761 unsigned long arg) 762{ 763 drm_agp_info32_t __user *argp = (void __user *)arg; 764 drm_agp_info32_t i32; 765 struct drm_agp_info __user *info; 766 int err; 767 768 info = compat_alloc_user_space(sizeof(*info)); 769 if (!access_ok(VERIFY_WRITE, info, sizeof(*info))) 770 return -EFAULT; 771 772 err = drm_ioctl(file, DRM_IOCTL_AGP_INFO, (unsigned long)info); 773 if (err) 774 return err; 775 776 if (__get_user(i32.agp_version_major, &info->agp_version_major) 777 || __get_user(i32.agp_version_minor, &info->agp_version_minor) 778 || __get_user(i32.mode, &info->mode) 779 || __get_user(i32.aperture_base, &info->aperture_base) 780 || __get_user(i32.aperture_size, &info->aperture_size) 781 || __get_user(i32.memory_allowed, &info->memory_allowed) 782 || __get_user(i32.memory_used, &info->memory_used) 783 || __get_user(i32.id_vendor, &info->id_vendor) 784 || __get_user(i32.id_device, &info->id_device)) 785 return -EFAULT; 786 787 if (copy_to_user(argp, &i32, sizeof(i32))) 788 return -EFAULT; 789 790 return 0; 791} 792 793typedef struct drm_agp_buffer32 { 794 u32 size; /**< In bytes -- will round to page boundary */ 795 u32 handle; /**< Used for binding / unbinding */ 796 u32 type; /**< Type of memory to allocate */ 797 u32 physical; /**< Physical used by i810 */ 798} drm_agp_buffer32_t; 799 800static int compat_drm_agp_alloc(struct file *file, unsigned int cmd, 801 unsigned long arg) 802{ 803 drm_agp_buffer32_t __user *argp = (void __user *)arg; 804 drm_agp_buffer32_t req32; 805 struct drm_agp_buffer __user *request; 806 int err; 807 808 if (copy_from_user(&req32, argp, sizeof(req32))) 809 return -EFAULT; 810 811 request = compat_alloc_user_space(sizeof(*request)); 812 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 813 || __put_user(req32.size, &request->size) 814 || __put_user(req32.type, &request->type)) 815 return -EFAULT; 816 817 err = drm_ioctl(file, DRM_IOCTL_AGP_ALLOC, (unsigned long)request); 818 if (err) 819 return err; 820 821 if (__get_user(req32.handle, &request->handle) 822 || __get_user(req32.physical, &request->physical) 823 || copy_to_user(argp, &req32, sizeof(req32))) { 824 drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request); 825 return -EFAULT; 826 } 827 828 return 0; 829} 830 831static int compat_drm_agp_free(struct file *file, unsigned int cmd, 832 unsigned long arg) 833{ 834 drm_agp_buffer32_t __user *argp = (void __user *)arg; 835 struct drm_agp_buffer __user *request; 836 u32 handle; 837 838 request = compat_alloc_user_space(sizeof(*request)); 839 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 840 || get_user(handle, &argp->handle) 841 || __put_user(handle, &request->handle)) 842 return -EFAULT; 843 844 return drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request); 845} 846 847typedef struct drm_agp_binding32 { 848 u32 handle; /**< From drm_agp_buffer */ 849 u32 offset; /**< In bytes -- will round to page boundary */ 850} drm_agp_binding32_t; 851 852static int compat_drm_agp_bind(struct file *file, unsigned int cmd, 853 unsigned long arg) 854{ 855 drm_agp_binding32_t __user *argp = (void __user *)arg; 856 drm_agp_binding32_t req32; 857 struct drm_agp_binding __user *request; 858 859 if (copy_from_user(&req32, argp, sizeof(req32))) 860 return -EFAULT; 861 862 request = compat_alloc_user_space(sizeof(*request)); 863 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 864 || __put_user(req32.handle, &request->handle) 865 || __put_user(req32.offset, &request->offset)) 866 return -EFAULT; 867 868 return drm_ioctl(file, DRM_IOCTL_AGP_BIND, (unsigned long)request); 869} 870 871static int compat_drm_agp_unbind(struct file *file, unsigned int cmd, 872 unsigned long arg) 873{ 874 drm_agp_binding32_t __user *argp = (void __user *)arg; 875 struct drm_agp_binding __user *request; 876 u32 handle; 877 878 request = compat_alloc_user_space(sizeof(*request)); 879 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 880 || get_user(handle, &argp->handle) 881 || __put_user(handle, &request->handle)) 882 return -EFAULT; 883 884 return drm_ioctl(file, DRM_IOCTL_AGP_UNBIND, (unsigned long)request); 885} 886#endif /* __OS_HAS_AGP */ 887 888typedef struct drm_scatter_gather32 { 889 u32 size; /**< In bytes -- will round to page boundary */ 890 u32 handle; /**< Used for mapping / unmapping */ 891} drm_scatter_gather32_t; 892 893static int compat_drm_sg_alloc(struct file *file, unsigned int cmd, 894 unsigned long arg) 895{ 896 drm_scatter_gather32_t __user *argp = (void __user *)arg; 897 struct drm_scatter_gather __user *request; 898 int err; 899 unsigned long x; 900 901 request = compat_alloc_user_space(sizeof(*request)); 902 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 903 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)) 904 || __get_user(x, &argp->size) 905 || __put_user(x, &request->size)) 906 return -EFAULT; 907 908 err = drm_ioctl(file, DRM_IOCTL_SG_ALLOC, (unsigned long)request); 909 if (err) 910 return err; 911 912 /* XXX not sure about the handle conversion here... */ 913 if (__get_user(x, &request->handle) 914 || __put_user(x >> PAGE_SHIFT, &argp->handle)) 915 return -EFAULT; 916 917 return 0; 918} 919 920static int compat_drm_sg_free(struct file *file, unsigned int cmd, 921 unsigned long arg) 922{ 923 drm_scatter_gather32_t __user *argp = (void __user *)arg; 924 struct drm_scatter_gather __user *request; 925 unsigned long x; 926 927 request = compat_alloc_user_space(sizeof(*request)); 928 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 929 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)) 930 || __get_user(x, &argp->handle) 931 || __put_user(x << PAGE_SHIFT, &request->handle)) 932 return -EFAULT; 933 934 return drm_ioctl(file, DRM_IOCTL_SG_FREE, (unsigned long)request); 935} 936 937#if defined(CONFIG_X86) || defined(CONFIG_IA64) 938typedef struct drm_update_draw32 { 939 drm_drawable_t handle; 940 unsigned int type; 941 unsigned int num; 942 /* 64-bit version has a 32-bit pad here */ 943 u64 data; /**< Pointer */ 944} __attribute__((packed)) drm_update_draw32_t; 945 946static int compat_drm_update_draw(struct file *file, unsigned int cmd, 947 unsigned long arg) 948{ 949 drm_update_draw32_t update32; 950 struct drm_update_draw __user *request; 951 int err; 952 953 if (copy_from_user(&update32, (void __user *)arg, sizeof(update32))) 954 return -EFAULT; 955 956 request = compat_alloc_user_space(sizeof(*request)); 957 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) || 958 __put_user(update32.handle, &request->handle) || 959 __put_user(update32.type, &request->type) || 960 __put_user(update32.num, &request->num) || 961 __put_user(update32.data, &request->data)) 962 return -EFAULT; 963 964 err = drm_ioctl(file, DRM_IOCTL_UPDATE_DRAW, (unsigned long)request); 965 return err; 966} 967#endif 968 969struct drm_wait_vblank_request32 { 970 enum drm_vblank_seq_type type; 971 unsigned int sequence; 972 u32 signal; 973}; 974 975struct drm_wait_vblank_reply32 { 976 enum drm_vblank_seq_type type; 977 unsigned int sequence; 978 s32 tval_sec; 979 s32 tval_usec; 980}; 981 982typedef union drm_wait_vblank32 { 983 struct drm_wait_vblank_request32 request; 984 struct drm_wait_vblank_reply32 reply; 985} drm_wait_vblank32_t; 986 987static int compat_drm_wait_vblank(struct file *file, unsigned int cmd, 988 unsigned long arg) 989{ 990 drm_wait_vblank32_t __user *argp = (void __user *)arg; 991 drm_wait_vblank32_t req32; 992 union drm_wait_vblank __user *request; 993 int err; 994 995 if (copy_from_user(&req32, argp, sizeof(req32))) 996 return -EFAULT; 997 998 request = compat_alloc_user_space(sizeof(*request)); 999 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 1000 || __put_user(req32.request.type, &request->request.type) 1001 || __put_user(req32.request.sequence, &request->request.sequence) 1002 || __put_user(req32.request.signal, &request->request.signal)) 1003 return -EFAULT; 1004 1005 err = drm_ioctl(file, DRM_IOCTL_WAIT_VBLANK, (unsigned long)request); 1006 if (err) 1007 return err; 1008 1009 if (__get_user(req32.reply.type, &request->reply.type) 1010 || __get_user(req32.reply.sequence, &request->reply.sequence) 1011 || __get_user(req32.reply.tval_sec, &request->reply.tval_sec) 1012 || __get_user(req32.reply.tval_usec, &request->reply.tval_usec)) 1013 return -EFAULT; 1014 1015 if (copy_to_user(argp, &req32, sizeof(req32))) 1016 return -EFAULT; 1017 1018 return 0; 1019} 1020 1021typedef struct drm_mode_fb_cmd232 { 1022 u32 fb_id; 1023 u32 width; 1024 u32 height; 1025 u32 pixel_format; 1026 u32 flags; 1027 u32 handles[4]; 1028 u32 pitches[4]; 1029 u32 offsets[4]; 1030 u64 modifier[4]; 1031} __attribute__((packed)) drm_mode_fb_cmd232_t; 1032 1033static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd, 1034 unsigned long arg) 1035{ 1036 struct drm_mode_fb_cmd232 __user *argp = (void __user *)arg; 1037 struct drm_mode_fb_cmd232 req32; 1038 struct drm_mode_fb_cmd2 __user *req64; 1039 int i; 1040 int err; 1041 1042 if (copy_from_user(&req32, argp, sizeof(req32))) 1043 return -EFAULT; 1044 1045 req64 = compat_alloc_user_space(sizeof(*req64)); 1046 1047 if (!access_ok(VERIFY_WRITE, req64, sizeof(*req64)) 1048 || __put_user(req32.width, &req64->width) 1049 || __put_user(req32.height, &req64->height) 1050 || __put_user(req32.pixel_format, &req64->pixel_format) 1051 || __put_user(req32.flags, &req64->flags)) 1052 return -EFAULT; 1053 1054 for (i = 0; i < 4; i++) { 1055 if (__put_user(req32.handles[i], &req64->handles[i])) 1056 return -EFAULT; 1057 if (__put_user(req32.pitches[i], &req64->pitches[i])) 1058 return -EFAULT; 1059 if (__put_user(req32.offsets[i], &req64->offsets[i])) 1060 return -EFAULT; 1061 if (__put_user(req32.modifier[i], &req64->modifier[i])) 1062 return -EFAULT; 1063 } 1064 1065 err = drm_ioctl(file, DRM_IOCTL_MODE_ADDFB2, (unsigned long)req64); 1066 if (err) 1067 return err; 1068 1069 if (__get_user(req32.fb_id, &req64->fb_id)) 1070 return -EFAULT; 1071 1072 if (copy_to_user(argp, &req32, sizeof(req32))) 1073 return -EFAULT; 1074 1075 return 0; 1076} 1077 1078static drm_ioctl_compat_t *drm_compat_ioctls[] = { 1079 [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version, 1080 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique, 1081 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap, 1082 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient, 1083 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats, 1084 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique, 1085 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap, 1086 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs, 1087 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs, 1088 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs, 1089 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs, 1090 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs, 1091 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap, 1092 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx, 1093 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx, 1094 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx, 1095 [DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma, 1096#if __OS_HAS_AGP 1097 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable, 1098 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info, 1099 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc, 1100 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free, 1101 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind, 1102 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind, 1103#endif 1104 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc, 1105 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free, 1106#if defined(CONFIG_X86) || defined(CONFIG_IA64) 1107 [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw, 1108#endif 1109 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank, 1110 [DRM_IOCTL_NR(DRM_IOCTL_MODE_ADDFB232)] = compat_drm_mode_addfb2, 1111}; 1112 1113/** 1114 * Called whenever a 32-bit process running under a 64-bit kernel 1115 * performs an ioctl on /dev/drm. 1116 * 1117 * \param file_priv DRM file private. 1118 * \param cmd command. 1119 * \param arg user argument. 1120 * \return zero on success or negative number on failure. 1121 */ 1122long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 1123{ 1124 unsigned int nr = DRM_IOCTL_NR(cmd); 1125 drm_ioctl_compat_t *fn; 1126 int ret; 1127 1128 /* Assume that ioctls without an explicit compat routine will just 1129 * work. This may not always be a good assumption, but it's better 1130 * than always failing. 1131 */ 1132 if (nr >= ARRAY_SIZE(drm_compat_ioctls)) 1133 return drm_ioctl(filp, cmd, arg); 1134 1135 fn = drm_compat_ioctls[nr]; 1136 1137 if (fn != NULL) 1138 ret = (*fn) (filp, cmd, arg); 1139 else 1140 ret = drm_ioctl(filp, cmd, arg); 1141 1142 return ret; 1143} 1144 1145EXPORT_SYMBOL(drm_compat_ioctl); 1146