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 "drmP.h" 35 #include "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 typedef struct drm_version_32 { 74 int version_major; /**< Major version */ 75 int version_minor; /**< Minor version */ 76 int version_patchlevel; /**< Patch level */ 77 u32 name_len; /**< Length of name buffer */ 78 u32 name; /**< Name of driver */ 79 u32 date_len; /**< Length of date buffer */ 80 u32 date; /**< User-space buffer to hold date */ 81 u32 desc_len; /**< Length of desc buffer */ 82 u32 desc; /**< User-space buffer to hold desc */ 83 } drm_version32_t; 84 85 static int compat_drm_version(struct file *file, unsigned int cmd, 86 unsigned long arg) 87 { 88 drm_version32_t v32; 89 struct drm_version __user *version; 90 int err; 91 92 if (copy_from_user(&v32, (void __user *)arg, sizeof(v32))) 93 return -EFAULT; 94 95 version = compat_alloc_user_space(sizeof(*version)); 96 if (!access_ok(VERIFY_WRITE, version, sizeof(*version))) 97 return -EFAULT; 98 if (__put_user(v32.name_len, &version->name_len) 99 || __put_user((void __user *)(unsigned long)v32.name, 100 &version->name) 101 || __put_user(v32.date_len, &version->date_len) 102 || __put_user((void __user *)(unsigned long)v32.date, 103 &version->date) 104 || __put_user(v32.desc_len, &version->desc_len) 105 || __put_user((void __user *)(unsigned long)v32.desc, 106 &version->desc)) 107 return -EFAULT; 108 109 err = drm_ioctl(file, 110 DRM_IOCTL_VERSION, (unsigned long)version); 111 if (err) 112 return err; 113 114 if (__get_user(v32.version_major, &version->version_major) 115 || __get_user(v32.version_minor, &version->version_minor) 116 || __get_user(v32.version_patchlevel, &version->version_patchlevel) 117 || __get_user(v32.name_len, &version->name_len) 118 || __get_user(v32.date_len, &version->date_len) 119 || __get_user(v32.desc_len, &version->desc_len)) 120 return -EFAULT; 121 122 if (copy_to_user((void __user *)arg, &v32, sizeof(v32))) 123 return -EFAULT; 124 return 0; 125 } 126 127 typedef struct drm_unique32 { 128 u32 unique_len; /**< Length of unique */ 129 u32 unique; /**< Unique name for driver instantiation */ 130 } drm_unique32_t; 131 132 static int compat_drm_getunique(struct file *file, unsigned int cmd, 133 unsigned long arg) 134 { 135 drm_unique32_t uq32; 136 struct drm_unique __user *u; 137 int err; 138 139 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32))) 140 return -EFAULT; 141 142 u = compat_alloc_user_space(sizeof(*u)); 143 if (!access_ok(VERIFY_WRITE, u, sizeof(*u))) 144 return -EFAULT; 145 if (__put_user(uq32.unique_len, &u->unique_len) 146 || __put_user((void __user *)(unsigned long)uq32.unique, 147 &u->unique)) 148 return -EFAULT; 149 150 err = drm_ioctl(file, DRM_IOCTL_GET_UNIQUE, (unsigned long)u); 151 if (err) 152 return err; 153 154 if (__get_user(uq32.unique_len, &u->unique_len)) 155 return -EFAULT; 156 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32))) 157 return -EFAULT; 158 return 0; 159 } 160 161 static int compat_drm_setunique(struct file *file, unsigned int cmd, 162 unsigned long arg) 163 { 164 drm_unique32_t uq32; 165 struct drm_unique __user *u; 166 167 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32))) 168 return -EFAULT; 169 170 u = compat_alloc_user_space(sizeof(*u)); 171 if (!access_ok(VERIFY_WRITE, u, sizeof(*u))) 172 return -EFAULT; 173 if (__put_user(uq32.unique_len, &u->unique_len) 174 || __put_user((void __user *)(unsigned long)uq32.unique, 175 &u->unique)) 176 return -EFAULT; 177 178 return drm_ioctl(file, 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, DRM_IOCTL_GET_MAP, (unsigned long)map); 209 if (err) 210 return err; 211 212 if (__get_user(m32.offset, &map->offset) 213 || __get_user(m32.size, &map->size) 214 || __get_user(m32.type, &map->type) 215 || __get_user(m32.flags, &map->flags) 216 || __get_user(handle, &map->handle) 217 || __get_user(m32.mtrr, &map->mtrr)) 218 return -EFAULT; 219 220 m32.handle = (unsigned long)handle; 221 if (copy_to_user(argp, &m32, sizeof(m32))) 222 return -EFAULT; 223 return 0; 224 225 } 226 227 static int compat_drm_addmap(struct file *file, unsigned int cmd, 228 unsigned long arg) 229 { 230 drm_map32_t __user *argp = (void __user *)arg; 231 drm_map32_t m32; 232 struct drm_map __user *map; 233 int err; 234 void *handle; 235 236 if (copy_from_user(&m32, argp, sizeof(m32))) 237 return -EFAULT; 238 239 map = compat_alloc_user_space(sizeof(*map)); 240 if (!access_ok(VERIFY_WRITE, map, sizeof(*map))) 241 return -EFAULT; 242 if (__put_user(m32.offset, &map->offset) 243 || __put_user(m32.size, &map->size) 244 || __put_user(m32.type, &map->type) 245 || __put_user(m32.flags, &map->flags)) 246 return -EFAULT; 247 248 err = drm_ioctl(file, DRM_IOCTL_ADD_MAP, (unsigned long)map); 249 if (err) 250 return err; 251 252 if (__get_user(m32.offset, &map->offset) 253 || __get_user(m32.mtrr, &map->mtrr) 254 || __get_user(handle, &map->handle)) 255 return -EFAULT; 256 257 m32.handle = (unsigned long)handle; 258 if (m32.handle != (unsigned long)handle) 259 printk_ratelimited(KERN_ERR "compat_drm_addmap truncated handle" 260 " %p for type %d offset %x\n", 261 handle, m32.type, m32.offset); 262 263 if (copy_to_user(argp, &m32, sizeof(m32))) 264 return -EFAULT; 265 266 return 0; 267 } 268 269 static int compat_drm_rmmap(struct file *file, unsigned int cmd, 270 unsigned long arg) 271 { 272 drm_map32_t __user *argp = (void __user *)arg; 273 struct drm_map __user *map; 274 u32 handle; 275 276 if (get_user(handle, &argp->handle)) 277 return -EFAULT; 278 279 map = compat_alloc_user_space(sizeof(*map)); 280 if (!access_ok(VERIFY_WRITE, map, sizeof(*map))) 281 return -EFAULT; 282 if (__put_user((void *)(unsigned long)handle, &map->handle)) 283 return -EFAULT; 284 285 return drm_ioctl(file, DRM_IOCTL_RM_MAP, (unsigned long)map); 286 } 287 288 typedef struct drm_client32 { 289 int idx; /**< Which client desired? */ 290 int auth; /**< Is client authenticated? */ 291 u32 pid; /**< Process ID */ 292 u32 uid; /**< User ID */ 293 u32 magic; /**< Magic */ 294 u32 iocs; /**< Ioctl count */ 295 } drm_client32_t; 296 297 static int compat_drm_getclient(struct file *file, unsigned int cmd, 298 unsigned long arg) 299 { 300 drm_client32_t c32; 301 drm_client32_t __user *argp = (void __user *)arg; 302 struct drm_client __user *client; 303 int idx, err; 304 305 if (get_user(idx, &argp->idx)) 306 return -EFAULT; 307 308 client = compat_alloc_user_space(sizeof(*client)); 309 if (!access_ok(VERIFY_WRITE, client, sizeof(*client))) 310 return -EFAULT; 311 if (__put_user(idx, &client->idx)) 312 return -EFAULT; 313 314 err = drm_ioctl(file, DRM_IOCTL_GET_CLIENT, (unsigned long)client); 315 if (err) 316 return err; 317 318 if (__get_user(c32.auth, &client->auth) 319 || __get_user(c32.pid, &client->pid) 320 || __get_user(c32.uid, &client->uid) 321 || __get_user(c32.magic, &client->magic) 322 || __get_user(c32.iocs, &client->iocs)) 323 return -EFAULT; 324 325 if (copy_to_user(argp, &c32, sizeof(c32))) 326 return -EFAULT; 327 return 0; 328 } 329 330 typedef struct drm_stats32 { 331 u32 count; 332 struct { 333 u32 value; 334 enum drm_stat_type type; 335 } data[15]; 336 } drm_stats32_t; 337 338 static int compat_drm_getstats(struct file *file, unsigned int cmd, 339 unsigned long arg) 340 { 341 drm_stats32_t s32; 342 drm_stats32_t __user *argp = (void __user *)arg; 343 struct drm_stats __user *stats; 344 int i, err; 345 346 stats = compat_alloc_user_space(sizeof(*stats)); 347 if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats))) 348 return -EFAULT; 349 350 err = drm_ioctl(file, DRM_IOCTL_GET_STATS, (unsigned long)stats); 351 if (err) 352 return err; 353 354 if (__get_user(s32.count, &stats->count)) 355 return -EFAULT; 356 for (i = 0; i < 15; ++i) 357 if (__get_user(s32.data[i].value, &stats->data[i].value) 358 || __get_user(s32.data[i].type, &stats->data[i].type)) 359 return -EFAULT; 360 361 if (copy_to_user(argp, &s32, sizeof(s32))) 362 return -EFAULT; 363 return 0; 364 } 365 366 typedef struct drm_buf_desc32 { 367 int count; /**< Number of buffers of this size */ 368 int size; /**< Size in bytes */ 369 int low_mark; /**< Low water mark */ 370 int high_mark; /**< High water mark */ 371 int flags; 372 u32 agp_start; /**< Start address in the AGP aperture */ 373 } drm_buf_desc32_t; 374 375 static int compat_drm_addbufs(struct file *file, unsigned int cmd, 376 unsigned long arg) 377 { 378 drm_buf_desc32_t __user *argp = (void __user *)arg; 379 struct drm_buf_desc __user *buf; 380 int err; 381 unsigned long agp_start; 382 383 buf = compat_alloc_user_space(sizeof(*buf)); 384 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)) 385 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))) 386 return -EFAULT; 387 388 if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start)) 389 || __get_user(agp_start, &argp->agp_start) 390 || __put_user(agp_start, &buf->agp_start)) 391 return -EFAULT; 392 393 err = drm_ioctl(file, DRM_IOCTL_ADD_BUFS, (unsigned long)buf); 394 if (err) 395 return err; 396 397 if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start)) 398 || __get_user(agp_start, &buf->agp_start) 399 || __put_user(agp_start, &argp->agp_start)) 400 return -EFAULT; 401 402 return 0; 403 } 404 405 static int compat_drm_markbufs(struct file *file, unsigned int cmd, 406 unsigned long arg) 407 { 408 drm_buf_desc32_t b32; 409 drm_buf_desc32_t __user *argp = (void __user *)arg; 410 struct drm_buf_desc __user *buf; 411 412 if (copy_from_user(&b32, argp, sizeof(b32))) 413 return -EFAULT; 414 415 buf = compat_alloc_user_space(sizeof(*buf)); 416 if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))) 417 return -EFAULT; 418 419 if (__put_user(b32.size, &buf->size) 420 || __put_user(b32.low_mark, &buf->low_mark) 421 || __put_user(b32.high_mark, &buf->high_mark)) 422 return -EFAULT; 423 424 return drm_ioctl(file, DRM_IOCTL_MARK_BUFS, (unsigned long)buf); 425 } 426 427 typedef struct drm_buf_info32 { 428 int count; /**< Entries in list */ 429 u32 list; 430 } drm_buf_info32_t; 431 432 static int compat_drm_infobufs(struct file *file, unsigned int cmd, 433 unsigned long arg) 434 { 435 drm_buf_info32_t req32; 436 drm_buf_info32_t __user *argp = (void __user *)arg; 437 drm_buf_desc32_t __user *to; 438 struct drm_buf_info __user *request; 439 struct drm_buf_desc __user *list; 440 size_t nbytes; 441 int i, err; 442 int count, actual; 443 444 if (copy_from_user(&req32, argp, sizeof(req32))) 445 return -EFAULT; 446 447 count = req32.count; 448 to = (drm_buf_desc32_t __user *) (unsigned long)req32.list; 449 if (count < 0) 450 count = 0; 451 if (count > 0 452 && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t))) 453 return -EFAULT; 454 455 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_desc); 456 request = compat_alloc_user_space(nbytes); 457 if (!access_ok(VERIFY_WRITE, request, nbytes)) 458 return -EFAULT; 459 list = (struct drm_buf_desc *) (request + 1); 460 461 if (__put_user(count, &request->count) 462 || __put_user(list, &request->list)) 463 return -EFAULT; 464 465 err = drm_ioctl(file, DRM_IOCTL_INFO_BUFS, (unsigned long)request); 466 if (err) 467 return err; 468 469 if (__get_user(actual, &request->count)) 470 return -EFAULT; 471 if (count >= actual) 472 for (i = 0; i < actual; ++i) 473 if (__copy_in_user(&to[i], &list[i], 474 offsetof(struct drm_buf_desc, flags))) 475 return -EFAULT; 476 477 if (__put_user(actual, &argp->count)) 478 return -EFAULT; 479 480 return 0; 481 } 482 483 typedef struct drm_buf_pub32 { 484 int idx; /**< Index into the master buffer list */ 485 int total; /**< Buffer size */ 486 int used; /**< Amount of buffer in use (for DMA) */ 487 u32 address; /**< Address of buffer */ 488 } drm_buf_pub32_t; 489 490 typedef struct drm_buf_map32 { 491 int count; /**< Length of the buffer list */ 492 u32 virtual; /**< Mmap'd area in user-virtual */ 493 u32 list; /**< Buffer information */ 494 } drm_buf_map32_t; 495 496 static int compat_drm_mapbufs(struct file *file, unsigned int cmd, 497 unsigned long arg) 498 { 499 drm_buf_map32_t __user *argp = (void __user *)arg; 500 drm_buf_map32_t req32; 501 drm_buf_pub32_t __user *list32; 502 struct drm_buf_map __user *request; 503 struct drm_buf_pub __user *list; 504 int i, err; 505 int count, actual; 506 size_t nbytes; 507 void __user *addr; 508 509 if (copy_from_user(&req32, argp, sizeof(req32))) 510 return -EFAULT; 511 count = req32.count; 512 list32 = (void __user *)(unsigned long)req32.list; 513 514 if (count < 0) 515 return -EINVAL; 516 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub); 517 request = compat_alloc_user_space(nbytes); 518 if (!access_ok(VERIFY_WRITE, request, nbytes)) 519 return -EFAULT; 520 list = (struct drm_buf_pub *) (request + 1); 521 522 if (__put_user(count, &request->count) 523 || __put_user(list, &request->list)) 524 return -EFAULT; 525 526 err = drm_ioctl(file, DRM_IOCTL_MAP_BUFS, (unsigned long)request); 527 if (err) 528 return err; 529 530 if (__get_user(actual, &request->count)) 531 return -EFAULT; 532 if (count >= actual) 533 for (i = 0; i < actual; ++i) 534 if (__copy_in_user(&list32[i], &list[i], 535 offsetof(struct drm_buf_pub, address)) 536 || __get_user(addr, &list[i].address) 537 || __put_user((unsigned long)addr, 538 &list32[i].address)) 539 return -EFAULT; 540 541 if (__put_user(actual, &argp->count) 542 || __get_user(addr, &request->virtual) 543 || __put_user((unsigned long)addr, &argp->virtual)) 544 return -EFAULT; 545 546 return 0; 547 } 548 549 typedef struct drm_buf_free32 { 550 int count; 551 u32 list; 552 } drm_buf_free32_t; 553 554 static int compat_drm_freebufs(struct file *file, unsigned int cmd, 555 unsigned long arg) 556 { 557 drm_buf_free32_t req32; 558 struct drm_buf_free __user *request; 559 drm_buf_free32_t __user *argp = (void __user *)arg; 560 561 if (copy_from_user(&req32, argp, sizeof(req32))) 562 return -EFAULT; 563 564 request = compat_alloc_user_space(sizeof(*request)); 565 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))) 566 return -EFAULT; 567 if (__put_user(req32.count, &request->count) 568 || __put_user((int __user *)(unsigned long)req32.list, 569 &request->list)) 570 return -EFAULT; 571 572 return drm_ioctl(file, DRM_IOCTL_FREE_BUFS, (unsigned long)request); 573 } 574 575 typedef struct drm_ctx_priv_map32 { 576 unsigned int ctx_id; /**< Context requesting private mapping */ 577 u32 handle; /**< Handle of map */ 578 } drm_ctx_priv_map32_t; 579 580 static int compat_drm_setsareactx(struct file *file, unsigned int cmd, 581 unsigned long arg) 582 { 583 drm_ctx_priv_map32_t req32; 584 struct drm_ctx_priv_map __user *request; 585 drm_ctx_priv_map32_t __user *argp = (void __user *)arg; 586 587 if (copy_from_user(&req32, argp, sizeof(req32))) 588 return -EFAULT; 589 590 request = compat_alloc_user_space(sizeof(*request)); 591 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))) 592 return -EFAULT; 593 if (__put_user(req32.ctx_id, &request->ctx_id) 594 || __put_user((void *)(unsigned long)req32.handle, 595 &request->handle)) 596 return -EFAULT; 597 598 return drm_ioctl(file, DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request); 599 } 600 601 static int compat_drm_getsareactx(struct file *file, unsigned int cmd, 602 unsigned long arg) 603 { 604 struct drm_ctx_priv_map __user *request; 605 drm_ctx_priv_map32_t __user *argp = (void __user *)arg; 606 int err; 607 unsigned int ctx_id; 608 void *handle; 609 610 if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp)) 611 || __get_user(ctx_id, &argp->ctx_id)) 612 return -EFAULT; 613 614 request = compat_alloc_user_space(sizeof(*request)); 615 if (!access_ok(VERIFY_WRITE, request, sizeof(*request))) 616 return -EFAULT; 617 if (__put_user(ctx_id, &request->ctx_id)) 618 return -EFAULT; 619 620 err = drm_ioctl(file, DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request); 621 if (err) 622 return err; 623 624 if (__get_user(handle, &request->handle) 625 || __put_user((unsigned long)handle, &argp->handle)) 626 return -EFAULT; 627 628 return 0; 629 } 630 631 typedef struct drm_ctx_res32 { 632 int count; 633 u32 contexts; 634 } drm_ctx_res32_t; 635 636 static int compat_drm_resctx(struct file *file, unsigned int cmd, 637 unsigned long arg) 638 { 639 drm_ctx_res32_t __user *argp = (void __user *)arg; 640 drm_ctx_res32_t res32; 641 struct drm_ctx_res __user *res; 642 int err; 643 644 if (copy_from_user(&res32, argp, sizeof(res32))) 645 return -EFAULT; 646 647 res = compat_alloc_user_space(sizeof(*res)); 648 if (!access_ok(VERIFY_WRITE, res, sizeof(*res))) 649 return -EFAULT; 650 if (__put_user(res32.count, &res->count) 651 || __put_user((struct drm_ctx __user *) (unsigned long)res32.contexts, 652 &res->contexts)) 653 return -EFAULT; 654 655 err = drm_ioctl(file, DRM_IOCTL_RES_CTX, (unsigned long)res); 656 if (err) 657 return err; 658 659 if (__get_user(res32.count, &res->count) 660 || __put_user(res32.count, &argp->count)) 661 return -EFAULT; 662 663 return 0; 664 } 665 666 typedef struct drm_dma32 { 667 int context; /**< Context handle */ 668 int send_count; /**< Number of buffers to send */ 669 u32 send_indices; /**< List of handles to buffers */ 670 u32 send_sizes; /**< Lengths of data to send */ 671 enum drm_dma_flags flags; /**< Flags */ 672 int request_count; /**< Number of buffers requested */ 673 int request_size; /**< Desired size for buffers */ 674 u32 request_indices; /**< Buffer information */ 675 u32 request_sizes; 676 int granted_count; /**< Number of buffers granted */ 677 } drm_dma32_t; 678 679 static int compat_drm_dma(struct file *file, unsigned int cmd, 680 unsigned long arg) 681 { 682 drm_dma32_t d32; 683 drm_dma32_t __user *argp = (void __user *)arg; 684 struct drm_dma __user *d; 685 int err; 686 687 if (copy_from_user(&d32, argp, sizeof(d32))) 688 return -EFAULT; 689 690 d = compat_alloc_user_space(sizeof(*d)); 691 if (!access_ok(VERIFY_WRITE, d, sizeof(*d))) 692 return -EFAULT; 693 694 if (__put_user(d32.context, &d->context) 695 || __put_user(d32.send_count, &d->send_count) 696 || __put_user((int __user *)(unsigned long)d32.send_indices, 697 &d->send_indices) 698 || __put_user((int __user *)(unsigned long)d32.send_sizes, 699 &d->send_sizes) 700 || __put_user(d32.flags, &d->flags) 701 || __put_user(d32.request_count, &d->request_count) 702 || __put_user((int __user *)(unsigned long)d32.request_indices, 703 &d->request_indices) 704 || __put_user((int __user *)(unsigned long)d32.request_sizes, 705 &d->request_sizes)) 706 return -EFAULT; 707 708 err = drm_ioctl(file, DRM_IOCTL_DMA, (unsigned long)d); 709 if (err) 710 return err; 711 712 if (__get_user(d32.request_size, &d->request_size) 713 || __get_user(d32.granted_count, &d->granted_count) 714 || __put_user(d32.request_size, &argp->request_size) 715 || __put_user(d32.granted_count, &argp->granted_count)) 716 return -EFAULT; 717 718 return 0; 719 } 720 721 #if __OS_HAS_AGP 722 typedef struct drm_agp_mode32 { 723 u32 mode; /**< AGP mode */ 724 } drm_agp_mode32_t; 725 726 static int compat_drm_agp_enable(struct file *file, unsigned int cmd, 727 unsigned long arg) 728 { 729 drm_agp_mode32_t __user *argp = (void __user *)arg; 730 drm_agp_mode32_t m32; 731 struct drm_agp_mode __user *mode; 732 733 if (get_user(m32.mode, &argp->mode)) 734 return -EFAULT; 735 736 mode = compat_alloc_user_space(sizeof(*mode)); 737 if (put_user(m32.mode, &mode->mode)) 738 return -EFAULT; 739 740 return drm_ioctl(file, DRM_IOCTL_AGP_ENABLE, (unsigned long)mode); 741 } 742 743 typedef struct drm_agp_info32 { 744 int agp_version_major; 745 int agp_version_minor; 746 u32 mode; 747 u32 aperture_base; /* physical address */ 748 u32 aperture_size; /* bytes */ 749 u32 memory_allowed; /* bytes */ 750 u32 memory_used; 751 752 /* PCI information */ 753 unsigned short id_vendor; 754 unsigned short id_device; 755 } drm_agp_info32_t; 756 757 static int compat_drm_agp_info(struct file *file, unsigned int cmd, 758 unsigned long arg) 759 { 760 drm_agp_info32_t __user *argp = (void __user *)arg; 761 drm_agp_info32_t i32; 762 struct drm_agp_info __user *info; 763 int err; 764 765 info = compat_alloc_user_space(sizeof(*info)); 766 if (!access_ok(VERIFY_WRITE, info, sizeof(*info))) 767 return -EFAULT; 768 769 err = drm_ioctl(file, DRM_IOCTL_AGP_INFO, (unsigned long)info); 770 if (err) 771 return err; 772 773 if (__get_user(i32.agp_version_major, &info->agp_version_major) 774 || __get_user(i32.agp_version_minor, &info->agp_version_minor) 775 || __get_user(i32.mode, &info->mode) 776 || __get_user(i32.aperture_base, &info->aperture_base) 777 || __get_user(i32.aperture_size, &info->aperture_size) 778 || __get_user(i32.memory_allowed, &info->memory_allowed) 779 || __get_user(i32.memory_used, &info->memory_used) 780 || __get_user(i32.id_vendor, &info->id_vendor) 781 || __get_user(i32.id_device, &info->id_device)) 782 return -EFAULT; 783 784 if (copy_to_user(argp, &i32, sizeof(i32))) 785 return -EFAULT; 786 787 return 0; 788 } 789 790 typedef struct drm_agp_buffer32 { 791 u32 size; /**< In bytes -- will round to page boundary */ 792 u32 handle; /**< Used for binding / unbinding */ 793 u32 type; /**< Type of memory to allocate */ 794 u32 physical; /**< Physical used by i810 */ 795 } drm_agp_buffer32_t; 796 797 static int compat_drm_agp_alloc(struct file *file, unsigned int cmd, 798 unsigned long arg) 799 { 800 drm_agp_buffer32_t __user *argp = (void __user *)arg; 801 drm_agp_buffer32_t req32; 802 struct drm_agp_buffer __user *request; 803 int err; 804 805 if (copy_from_user(&req32, argp, sizeof(req32))) 806 return -EFAULT; 807 808 request = compat_alloc_user_space(sizeof(*request)); 809 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 810 || __put_user(req32.size, &request->size) 811 || __put_user(req32.type, &request->type)) 812 return -EFAULT; 813 814 err = drm_ioctl(file, DRM_IOCTL_AGP_ALLOC, (unsigned long)request); 815 if (err) 816 return err; 817 818 if (__get_user(req32.handle, &request->handle) 819 || __get_user(req32.physical, &request->physical) 820 || copy_to_user(argp, &req32, sizeof(req32))) { 821 drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request); 822 return -EFAULT; 823 } 824 825 return 0; 826 } 827 828 static int compat_drm_agp_free(struct file *file, unsigned int cmd, 829 unsigned long arg) 830 { 831 drm_agp_buffer32_t __user *argp = (void __user *)arg; 832 struct drm_agp_buffer __user *request; 833 u32 handle; 834 835 request = compat_alloc_user_space(sizeof(*request)); 836 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 837 || get_user(handle, &argp->handle) 838 || __put_user(handle, &request->handle)) 839 return -EFAULT; 840 841 return drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request); 842 } 843 844 typedef struct drm_agp_binding32 { 845 u32 handle; /**< From drm_agp_buffer */ 846 u32 offset; /**< In bytes -- will round to page boundary */ 847 } drm_agp_binding32_t; 848 849 static int compat_drm_agp_bind(struct file *file, unsigned int cmd, 850 unsigned long arg) 851 { 852 drm_agp_binding32_t __user *argp = (void __user *)arg; 853 drm_agp_binding32_t req32; 854 struct drm_agp_binding __user *request; 855 856 if (copy_from_user(&req32, argp, sizeof(req32))) 857 return -EFAULT; 858 859 request = compat_alloc_user_space(sizeof(*request)); 860 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 861 || __put_user(req32.handle, &request->handle) 862 || __put_user(req32.offset, &request->offset)) 863 return -EFAULT; 864 865 return drm_ioctl(file, DRM_IOCTL_AGP_BIND, (unsigned long)request); 866 } 867 868 static int compat_drm_agp_unbind(struct file *file, unsigned int cmd, 869 unsigned long arg) 870 { 871 drm_agp_binding32_t __user *argp = (void __user *)arg; 872 struct drm_agp_binding __user *request; 873 u32 handle; 874 875 request = compat_alloc_user_space(sizeof(*request)); 876 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 877 || get_user(handle, &argp->handle) 878 || __put_user(handle, &request->handle)) 879 return -EFAULT; 880 881 return drm_ioctl(file, DRM_IOCTL_AGP_UNBIND, (unsigned long)request); 882 } 883 #endif /* __OS_HAS_AGP */ 884 885 typedef struct drm_scatter_gather32 { 886 u32 size; /**< In bytes -- will round to page boundary */ 887 u32 handle; /**< Used for mapping / unmapping */ 888 } drm_scatter_gather32_t; 889 890 static int compat_drm_sg_alloc(struct file *file, unsigned int cmd, 891 unsigned long arg) 892 { 893 drm_scatter_gather32_t __user *argp = (void __user *)arg; 894 struct drm_scatter_gather __user *request; 895 int err; 896 unsigned long x; 897 898 request = compat_alloc_user_space(sizeof(*request)); 899 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 900 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)) 901 || __get_user(x, &argp->size) 902 || __put_user(x, &request->size)) 903 return -EFAULT; 904 905 err = drm_ioctl(file, DRM_IOCTL_SG_ALLOC, (unsigned long)request); 906 if (err) 907 return err; 908 909 /* XXX not sure about the handle conversion here... */ 910 if (__get_user(x, &request->handle) 911 || __put_user(x >> PAGE_SHIFT, &argp->handle)) 912 return -EFAULT; 913 914 return 0; 915 } 916 917 static int compat_drm_sg_free(struct file *file, unsigned int cmd, 918 unsigned long arg) 919 { 920 drm_scatter_gather32_t __user *argp = (void __user *)arg; 921 struct drm_scatter_gather __user *request; 922 unsigned long x; 923 924 request = compat_alloc_user_space(sizeof(*request)); 925 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 926 || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)) 927 || __get_user(x, &argp->handle) 928 || __put_user(x << PAGE_SHIFT, &request->handle)) 929 return -EFAULT; 930 931 return drm_ioctl(file, DRM_IOCTL_SG_FREE, (unsigned long)request); 932 } 933 934 #if defined(CONFIG_X86) || defined(CONFIG_IA64) 935 typedef struct drm_update_draw32 { 936 drm_drawable_t handle; 937 unsigned int type; 938 unsigned int num; 939 /* 64-bit version has a 32-bit pad here */ 940 u64 data; /**< Pointer */ 941 } __attribute__((packed)) drm_update_draw32_t; 942 943 static int compat_drm_update_draw(struct file *file, unsigned int cmd, 944 unsigned long arg) 945 { 946 drm_update_draw32_t update32; 947 struct drm_update_draw __user *request; 948 int err; 949 950 if (copy_from_user(&update32, (void __user *)arg, sizeof(update32))) 951 return -EFAULT; 952 953 request = compat_alloc_user_space(sizeof(*request)); 954 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) || 955 __put_user(update32.handle, &request->handle) || 956 __put_user(update32.type, &request->type) || 957 __put_user(update32.num, &request->num) || 958 __put_user(update32.data, &request->data)) 959 return -EFAULT; 960 961 err = drm_ioctl(file, DRM_IOCTL_UPDATE_DRAW, (unsigned long)request); 962 return err; 963 } 964 #endif 965 966 struct drm_wait_vblank_request32 { 967 enum drm_vblank_seq_type type; 968 unsigned int sequence; 969 u32 signal; 970 }; 971 972 struct drm_wait_vblank_reply32 { 973 enum drm_vblank_seq_type type; 974 unsigned int sequence; 975 s32 tval_sec; 976 s32 tval_usec; 977 }; 978 979 typedef union drm_wait_vblank32 { 980 struct drm_wait_vblank_request32 request; 981 struct drm_wait_vblank_reply32 reply; 982 } drm_wait_vblank32_t; 983 984 static int compat_drm_wait_vblank(struct file *file, unsigned int cmd, 985 unsigned long arg) 986 { 987 drm_wait_vblank32_t __user *argp = (void __user *)arg; 988 drm_wait_vblank32_t req32; 989 union drm_wait_vblank __user *request; 990 int err; 991 992 if (copy_from_user(&req32, argp, sizeof(req32))) 993 return -EFAULT; 994 995 request = compat_alloc_user_space(sizeof(*request)); 996 if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) 997 || __put_user(req32.request.type, &request->request.type) 998 || __put_user(req32.request.sequence, &request->request.sequence) 999 || __put_user(req32.request.signal, &request->request.signal)) 1000 return -EFAULT; 1001 1002 err = drm_ioctl(file, DRM_IOCTL_WAIT_VBLANK, (unsigned long)request); 1003 if (err) 1004 return err; 1005 1006 if (__get_user(req32.reply.type, &request->reply.type) 1007 || __get_user(req32.reply.sequence, &request->reply.sequence) 1008 || __get_user(req32.reply.tval_sec, &request->reply.tval_sec) 1009 || __get_user(req32.reply.tval_usec, &request->reply.tval_usec)) 1010 return -EFAULT; 1011 1012 if (copy_to_user(argp, &req32, sizeof(req32))) 1013 return -EFAULT; 1014 1015 return 0; 1016 } 1017 1018 drm_ioctl_compat_t *drm_compat_ioctls[] = { 1019 [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version, 1020 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique, 1021 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap, 1022 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient, 1023 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats, 1024 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique, 1025 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap, 1026 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs, 1027 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs, 1028 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs, 1029 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs, 1030 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs, 1031 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap, 1032 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx, 1033 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx, 1034 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx, 1035 [DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma, 1036 #if __OS_HAS_AGP 1037 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable, 1038 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info, 1039 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc, 1040 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free, 1041 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind, 1042 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind, 1043 #endif 1044 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc, 1045 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free, 1046 #if defined(CONFIG_X86) || defined(CONFIG_IA64) 1047 [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw, 1048 #endif 1049 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank, 1050 }; 1051 1052 /** 1053 * Called whenever a 32-bit process running under a 64-bit kernel 1054 * performs an ioctl on /dev/drm. 1055 * 1056 * \param file_priv DRM file private. 1057 * \param cmd command. 1058 * \param arg user argument. 1059 * \return zero on success or negative number on failure. 1060 */ 1061 long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) 1062 { 1063 unsigned int nr = DRM_IOCTL_NR(cmd); 1064 drm_ioctl_compat_t *fn; 1065 int ret; 1066 1067 /* Assume that ioctls without an explicit compat routine will just 1068 * work. This may not always be a good assumption, but it's better 1069 * than always failing. 1070 */ 1071 if (nr >= ARRAY_SIZE(drm_compat_ioctls)) 1072 return drm_ioctl(filp, cmd, arg); 1073 1074 fn = drm_compat_ioctls[nr]; 1075 1076 if (fn != NULL) 1077 ret = (*fn) (filp, cmd, arg); 1078 else 1079 ret = drm_ioctl(filp, cmd, arg); 1080 1081 return ret; 1082 } 1083 1084 EXPORT_SYMBOL(drm_compat_ioctl); 1085