4 * 32-bit ioctl compatibility routines for the DRM.
6 * \author Paul Mackerras <paulus@samba.org>
8 * Copyright (C) Paul Mackerras 2005.
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:
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
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
30 #include <linux/compat.h>
31 #include <linux/ratelimit.h>
32 #include <linux/export.h>
35 #include <drm/drm_core.h>
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)
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)
51 #define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t)
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)
56 #define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t)
57 #define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t)
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)
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)
69 #define DRM_IOCTL_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t)
71 #define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
73 #define DRM_IOCTL_MODE_ADDFB232 DRM_IOWR(0xb8, drm_mode_fb_cmd232_t)
75 typedef 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 */
87 static int compat_drm_version(struct file *file, unsigned int cmd,
91 struct drm_version __user *version;
94 if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
97 version = compat_alloc_user_space(sizeof(*version));
100 if (__put_user(v32.name_len, &version->name_len)
101 || __put_user((void __user *)(unsigned long)v32.name,
103 || __put_user(v32.date_len, &version->date_len)
104 || __put_user((void __user *)(unsigned long)v32.date,
106 || __put_user(v32.desc_len, &version->desc_len)
107 || __put_user((void __user *)(unsigned long)v32.desc,
111 err = drm_ioctl(file,
112 DRM_IOCTL_VERSION, (unsigned long)version);
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))
124 if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
129 typedef struct drm_unique32 {
130 u32 unique_len; /**< Length of unique */
131 u32 unique; /**< Unique name for driver instantiation */
134 static int compat_drm_getunique(struct file *file, unsigned int cmd,
138 struct drm_unique __user *u;
141 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
144 u = compat_alloc_user_space(sizeof(*u));
147 if (__put_user(uq32.unique_len, &u->unique_len)
148 || __put_user((void __user *)(unsigned long)uq32.unique,
152 err = drm_ioctl(file, DRM_IOCTL_GET_UNIQUE, (unsigned long)u);
156 if (__get_user(uq32.unique_len, &u->unique_len))
158 if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
163 static int compat_drm_setunique(struct file *file, unsigned int cmd,
167 struct drm_unique __user *u;
169 if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
172 u = compat_alloc_user_space(sizeof(*u));
175 if (__put_user(uq32.unique_len, &u->unique_len)
176 || __put_user((void __user *)(unsigned long)uq32.unique,
180 return drm_ioctl(file, DRM_IOCTL_SET_UNIQUE, (unsigned long)u);
183 typedef 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 */
192 static int compat_drm_getmap(struct file *file, unsigned int cmd,
195 drm_map32_t __user *argp = (void __user *)arg;
197 struct drm_map __user *map;
201 if (get_user(idx, &argp->offset))
204 map = compat_alloc_user_space(sizeof(*map));
207 if (__put_user(idx, &map->offset))
210 err = drm_ioctl(file, DRM_IOCTL_GET_MAP, (unsigned long)map);
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))
222 m32.handle = (unsigned long)handle;
223 if (copy_to_user(argp, &m32, sizeof(m32)))
229 static int compat_drm_addmap(struct file *file, unsigned int cmd,
232 drm_map32_t __user *argp = (void __user *)arg;
234 struct drm_map __user *map;
238 if (copy_from_user(&m32, argp, sizeof(m32)))
241 map = compat_alloc_user_space(sizeof(*map));
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))
250 err = drm_ioctl(file, DRM_IOCTL_ADD_MAP, (unsigned long)map);
254 if (__get_user(m32.offset, &map->offset)
255 || __get_user(m32.mtrr, &map->mtrr)
256 || __get_user(handle, &map->handle))
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);
265 if (copy_to_user(argp, &m32, sizeof(m32)))
271 static int compat_drm_rmmap(struct file *file, unsigned int cmd,
274 drm_map32_t __user *argp = (void __user *)arg;
275 struct drm_map __user *map;
278 if (get_user(handle, &argp->handle))
281 map = compat_alloc_user_space(sizeof(*map));
284 if (__put_user((void *)(unsigned long)handle, &map->handle))
287 return drm_ioctl(file, DRM_IOCTL_RM_MAP, (unsigned long)map);
290 typedef 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 */
299 static int compat_drm_getclient(struct file *file, unsigned int cmd,
303 drm_client32_t __user *argp = (void __user *)arg;
304 struct drm_client __user *client;
307 if (get_user(idx, &argp->idx))
310 client = compat_alloc_user_space(sizeof(*client));
313 if (__put_user(idx, &client->idx))
316 err = drm_ioctl(file, DRM_IOCTL_GET_CLIENT, (unsigned long)client);
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))
328 if (copy_to_user(argp, &c32, sizeof(c32)))
333 typedef struct drm_stats32 {
337 enum drm_stat_type type;
341 static int compat_drm_getstats(struct file *file, unsigned int cmd,
345 drm_stats32_t __user *argp = (void __user *)arg;
346 struct drm_stats __user *stats;
349 stats = compat_alloc_user_space(sizeof(*stats));
353 err = drm_ioctl(file, DRM_IOCTL_GET_STATS, (unsigned long)stats);
357 if (__get_user(s32.count, &stats->count))
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))
364 if (copy_to_user(argp, &s32, sizeof(s32)))
369 typedef struct drm_buf_desc32 {
370 int count; /**< Number of buffers of this size */
371 int size; /**< Size in bytes */
372 int low_mark; /**< Low water mark */
373 int high_mark; /**< High water mark */
375 u32 agp_start; /**< Start address in the AGP aperture */
378 static int compat_drm_addbufs(struct file *file, unsigned int cmd,
381 drm_buf_desc32_t __user *argp = (void __user *)arg;
382 struct drm_buf_desc __user *buf;
384 unsigned long agp_start;
386 buf = compat_alloc_user_space(sizeof(*buf));
387 if (!buf || !access_ok(VERIFY_WRITE, argp, sizeof(*argp)))
390 if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start))
391 || __get_user(agp_start, &argp->agp_start)
392 || __put_user(agp_start, &buf->agp_start))
395 err = drm_ioctl(file, DRM_IOCTL_ADD_BUFS, (unsigned long)buf);
399 if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start))
400 || __get_user(agp_start, &buf->agp_start)
401 || __put_user(agp_start, &argp->agp_start))
407 static int compat_drm_markbufs(struct file *file, unsigned int cmd,
410 drm_buf_desc32_t b32;
411 drm_buf_desc32_t __user *argp = (void __user *)arg;
412 struct drm_buf_desc __user *buf;
414 if (copy_from_user(&b32, argp, sizeof(b32)))
417 buf = compat_alloc_user_space(sizeof(*buf));
421 if (__put_user(b32.size, &buf->size)
422 || __put_user(b32.low_mark, &buf->low_mark)
423 || __put_user(b32.high_mark, &buf->high_mark))
426 return drm_ioctl(file, DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
429 typedef struct drm_buf_info32 {
430 int count; /**< Entries in list */
434 static int compat_drm_infobufs(struct file *file, unsigned int cmd,
437 drm_buf_info32_t req32;
438 drm_buf_info32_t __user *argp = (void __user *)arg;
439 drm_buf_desc32_t __user *to;
440 struct drm_buf_info __user *request;
441 struct drm_buf_desc __user *list;
446 if (copy_from_user(&req32, argp, sizeof(req32)))
450 to = (drm_buf_desc32_t __user *) (unsigned long)req32.list;
454 && !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t)))
457 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_desc);
458 request = compat_alloc_user_space(nbytes);
461 list = (struct drm_buf_desc *) (request + 1);
463 if (__put_user(count, &request->count)
464 || __put_user(list, &request->list))
467 err = drm_ioctl(file, DRM_IOCTL_INFO_BUFS, (unsigned long)request);
471 if (__get_user(actual, &request->count))
474 for (i = 0; i < actual; ++i)
475 if (__copy_in_user(&to[i], &list[i],
476 offsetof(struct drm_buf_desc, flags)))
479 if (__put_user(actual, &argp->count))
485 typedef struct drm_buf_pub32 {
486 int idx; /**< Index into the master buffer list */
487 int total; /**< Buffer size */
488 int used; /**< Amount of buffer in use (for DMA) */
489 u32 address; /**< Address of buffer */
492 typedef struct drm_buf_map32 {
493 int count; /**< Length of the buffer list */
494 u32 virtual; /**< Mmap'd area in user-virtual */
495 u32 list; /**< Buffer information */
498 static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
501 drm_buf_map32_t __user *argp = (void __user *)arg;
502 drm_buf_map32_t req32;
503 drm_buf_pub32_t __user *list32;
504 struct drm_buf_map __user *request;
505 struct drm_buf_pub __user *list;
511 if (copy_from_user(&req32, argp, sizeof(req32)))
514 list32 = (void __user *)(unsigned long)req32.list;
518 nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub);
519 request = compat_alloc_user_space(nbytes);
522 list = (struct drm_buf_pub *) (request + 1);
524 if (__put_user(count, &request->count)
525 || __put_user(list, &request->list))
528 err = drm_ioctl(file, DRM_IOCTL_MAP_BUFS, (unsigned long)request);
532 if (__get_user(actual, &request->count))
535 for (i = 0; i < actual; ++i)
536 if (__copy_in_user(&list32[i], &list[i],
537 offsetof(struct drm_buf_pub, address))
538 || __get_user(addr, &list[i].address)
539 || __put_user((unsigned long)addr,
543 if (__put_user(actual, &argp->count)
544 || __get_user(addr, &request->virtual)
545 || __put_user((unsigned long)addr, &argp->virtual))
551 typedef struct drm_buf_free32 {
556 static int compat_drm_freebufs(struct file *file, unsigned int cmd,
559 drm_buf_free32_t req32;
560 struct drm_buf_free __user *request;
561 drm_buf_free32_t __user *argp = (void __user *)arg;
563 if (copy_from_user(&req32, argp, sizeof(req32)))
566 request = compat_alloc_user_space(sizeof(*request));
569 if (__put_user(req32.count, &request->count)
570 || __put_user((int __user *)(unsigned long)req32.list,
574 return drm_ioctl(file, DRM_IOCTL_FREE_BUFS, (unsigned long)request);
577 typedef struct drm_ctx_priv_map32 {
578 unsigned int ctx_id; /**< Context requesting private mapping */
579 u32 handle; /**< Handle of map */
580 } drm_ctx_priv_map32_t;
582 static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
585 drm_ctx_priv_map32_t req32;
586 struct drm_ctx_priv_map __user *request;
587 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
589 if (copy_from_user(&req32, argp, sizeof(req32)))
592 request = compat_alloc_user_space(sizeof(*request));
595 if (__put_user(req32.ctx_id, &request->ctx_id)
596 || __put_user((void *)(unsigned long)req32.handle,
600 return drm_ioctl(file, DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
603 static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
606 struct drm_ctx_priv_map __user *request;
607 drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
612 if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp))
613 || __get_user(ctx_id, &argp->ctx_id))
616 request = compat_alloc_user_space(sizeof(*request));
619 if (__put_user(ctx_id, &request->ctx_id))
622 err = drm_ioctl(file, DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
626 if (__get_user(handle, &request->handle)
627 || __put_user((unsigned long)handle, &argp->handle))
633 typedef struct drm_ctx_res32 {
638 static int compat_drm_resctx(struct file *file, unsigned int cmd,
641 drm_ctx_res32_t __user *argp = (void __user *)arg;
642 drm_ctx_res32_t res32;
643 struct drm_ctx_res __user *res;
646 if (copy_from_user(&res32, argp, sizeof(res32)))
649 res = compat_alloc_user_space(sizeof(*res));
652 if (__put_user(res32.count, &res->count)
653 || __put_user((struct drm_ctx __user *) (unsigned long)res32.contexts,
657 err = drm_ioctl(file, DRM_IOCTL_RES_CTX, (unsigned long)res);
661 if (__get_user(res32.count, &res->count)
662 || __put_user(res32.count, &argp->count))
668 typedef struct drm_dma32 {
669 int context; /**< Context handle */
670 int send_count; /**< Number of buffers to send */
671 u32 send_indices; /**< List of handles to buffers */
672 u32 send_sizes; /**< Lengths of data to send */
673 enum drm_dma_flags flags; /**< Flags */
674 int request_count; /**< Number of buffers requested */
675 int request_size; /**< Desired size for buffers */
676 u32 request_indices; /**< Buffer information */
678 int granted_count; /**< Number of buffers granted */
681 static int compat_drm_dma(struct file *file, unsigned int cmd,
685 drm_dma32_t __user *argp = (void __user *)arg;
686 struct drm_dma __user *d;
689 if (copy_from_user(&d32, argp, sizeof(d32)))
692 d = compat_alloc_user_space(sizeof(*d));
696 if (__put_user(d32.context, &d->context)
697 || __put_user(d32.send_count, &d->send_count)
698 || __put_user((int __user *)(unsigned long)d32.send_indices,
700 || __put_user((int __user *)(unsigned long)d32.send_sizes,
702 || __put_user(d32.flags, &d->flags)
703 || __put_user(d32.request_count, &d->request_count)
704 || __put_user((int __user *)(unsigned long)d32.request_indices,
706 || __put_user((int __user *)(unsigned long)d32.request_sizes,
710 err = drm_ioctl(file, DRM_IOCTL_DMA, (unsigned long)d);
714 if (__get_user(d32.request_size, &d->request_size)
715 || __get_user(d32.granted_count, &d->granted_count)
716 || __put_user(d32.request_size, &argp->request_size)
717 || __put_user(d32.granted_count, &argp->granted_count))
724 typedef struct drm_agp_mode32 {
725 u32 mode; /**< AGP mode */
728 static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
731 drm_agp_mode32_t __user *argp = (void __user *)arg;
732 drm_agp_mode32_t m32;
733 struct drm_agp_mode __user *mode;
735 if (get_user(m32.mode, &argp->mode))
738 mode = compat_alloc_user_space(sizeof(*mode));
739 if (put_user(m32.mode, &mode->mode))
742 return drm_ioctl(file, DRM_IOCTL_AGP_ENABLE, (unsigned long)mode);
745 typedef struct drm_agp_info32 {
746 int agp_version_major;
747 int agp_version_minor;
749 u32 aperture_base; /* physical address */
750 u32 aperture_size; /* bytes */
751 u32 memory_allowed; /* bytes */
754 /* PCI information */
755 unsigned short id_vendor;
756 unsigned short id_device;
759 static int compat_drm_agp_info(struct file *file, unsigned int cmd,
762 drm_agp_info32_t __user *argp = (void __user *)arg;
763 drm_agp_info32_t i32;
764 struct drm_agp_info __user *info;
767 info = compat_alloc_user_space(sizeof(*info));
771 err = drm_ioctl(file, DRM_IOCTL_AGP_INFO, (unsigned long)info);
775 if (__get_user(i32.agp_version_major, &info->agp_version_major)
776 || __get_user(i32.agp_version_minor, &info->agp_version_minor)
777 || __get_user(i32.mode, &info->mode)
778 || __get_user(i32.aperture_base, &info->aperture_base)
779 || __get_user(i32.aperture_size, &info->aperture_size)
780 || __get_user(i32.memory_allowed, &info->memory_allowed)
781 || __get_user(i32.memory_used, &info->memory_used)
782 || __get_user(i32.id_vendor, &info->id_vendor)
783 || __get_user(i32.id_device, &info->id_device))
786 if (copy_to_user(argp, &i32, sizeof(i32)))
792 typedef struct drm_agp_buffer32 {
793 u32 size; /**< In bytes -- will round to page boundary */
794 u32 handle; /**< Used for binding / unbinding */
795 u32 type; /**< Type of memory to allocate */
796 u32 physical; /**< Physical used by i810 */
797 } drm_agp_buffer32_t;
799 static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
802 drm_agp_buffer32_t __user *argp = (void __user *)arg;
803 drm_agp_buffer32_t req32;
804 struct drm_agp_buffer __user *request;
807 if (copy_from_user(&req32, argp, sizeof(req32)))
810 request = compat_alloc_user_space(sizeof(*request));
812 || __put_user(req32.size, &request->size)
813 || __put_user(req32.type, &request->type))
816 err = drm_ioctl(file, DRM_IOCTL_AGP_ALLOC, (unsigned long)request);
820 if (__get_user(req32.handle, &request->handle)
821 || __get_user(req32.physical, &request->physical)
822 || copy_to_user(argp, &req32, sizeof(req32))) {
823 drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
830 static int compat_drm_agp_free(struct file *file, unsigned int cmd,
833 drm_agp_buffer32_t __user *argp = (void __user *)arg;
834 struct drm_agp_buffer __user *request;
837 request = compat_alloc_user_space(sizeof(*request));
839 || get_user(handle, &argp->handle)
840 || __put_user(handle, &request->handle))
843 return drm_ioctl(file, DRM_IOCTL_AGP_FREE, (unsigned long)request);
846 typedef struct drm_agp_binding32 {
847 u32 handle; /**< From drm_agp_buffer */
848 u32 offset; /**< In bytes -- will round to page boundary */
849 } drm_agp_binding32_t;
851 static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
854 drm_agp_binding32_t __user *argp = (void __user *)arg;
855 drm_agp_binding32_t req32;
856 struct drm_agp_binding __user *request;
858 if (copy_from_user(&req32, argp, sizeof(req32)))
861 request = compat_alloc_user_space(sizeof(*request));
863 || __put_user(req32.handle, &request->handle)
864 || __put_user(req32.offset, &request->offset))
867 return drm_ioctl(file, DRM_IOCTL_AGP_BIND, (unsigned long)request);
870 static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
873 drm_agp_binding32_t __user *argp = (void __user *)arg;
874 struct drm_agp_binding __user *request;
877 request = compat_alloc_user_space(sizeof(*request));
879 || get_user(handle, &argp->handle)
880 || __put_user(handle, &request->handle))
883 return drm_ioctl(file, DRM_IOCTL_AGP_UNBIND, (unsigned long)request);
885 #endif /* __OS_HAS_AGP */
887 typedef struct drm_scatter_gather32 {
888 u32 size; /**< In bytes -- will round to page boundary */
889 u32 handle; /**< Used for mapping / unmapping */
890 } drm_scatter_gather32_t;
892 static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
895 drm_scatter_gather32_t __user *argp = (void __user *)arg;
896 struct drm_scatter_gather __user *request;
900 request = compat_alloc_user_space(sizeof(*request));
901 if (!request || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
902 || __get_user(x, &argp->size)
903 || __put_user(x, &request->size))
906 err = drm_ioctl(file, DRM_IOCTL_SG_ALLOC, (unsigned long)request);
910 /* XXX not sure about the handle conversion here... */
911 if (__get_user(x, &request->handle)
912 || __put_user(x >> PAGE_SHIFT, &argp->handle))
918 static int compat_drm_sg_free(struct file *file, unsigned int cmd,
921 drm_scatter_gather32_t __user *argp = (void __user *)arg;
922 struct drm_scatter_gather __user *request;
925 request = compat_alloc_user_space(sizeof(*request));
926 if (!request || !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
927 || __get_user(x, &argp->handle)
928 || __put_user(x << PAGE_SHIFT, &request->handle))
931 return drm_ioctl(file, DRM_IOCTL_SG_FREE, (unsigned long)request);
934 #if defined(CONFIG_X86) || defined(CONFIG_IA64)
935 typedef struct drm_update_draw32 {
936 drm_drawable_t handle;
939 /* 64-bit version has a 32-bit pad here */
940 u64 data; /**< Pointer */
941 } __attribute__((packed)) drm_update_draw32_t;
943 static int compat_drm_update_draw(struct file *file, unsigned int cmd,
946 drm_update_draw32_t update32;
947 struct drm_update_draw __user *request;
950 if (copy_from_user(&update32, (void __user *)arg, sizeof(update32)))
953 request = compat_alloc_user_space(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))
961 err = drm_ioctl(file, DRM_IOCTL_UPDATE_DRAW, (unsigned long)request);
966 struct drm_wait_vblank_request32 {
967 enum drm_vblank_seq_type type;
968 unsigned int sequence;
972 struct drm_wait_vblank_reply32 {
973 enum drm_vblank_seq_type type;
974 unsigned int sequence;
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;
984 static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
987 drm_wait_vblank32_t __user *argp = (void __user *)arg;
988 drm_wait_vblank32_t req32;
989 union drm_wait_vblank __user *request;
992 if (copy_from_user(&req32, argp, sizeof(req32)))
995 request = compat_alloc_user_space(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))
1002 err = drm_ioctl(file, DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
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))
1012 if (copy_to_user(argp, &req32, sizeof(req32)))
1018 typedef struct drm_mode_fb_cmd232 {
1028 } __attribute__((packed)) drm_mode_fb_cmd232_t;
1030 static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd,
1033 struct drm_mode_fb_cmd232 __user *argp = (void __user *)arg;
1034 struct drm_mode_fb_cmd232 req32;
1035 struct drm_mode_fb_cmd2 __user *req64;
1039 if (copy_from_user(&req32, argp, sizeof(req32)))
1042 req64 = compat_alloc_user_space(sizeof(*req64));
1044 if (!access_ok(VERIFY_WRITE, req64, sizeof(*req64))
1045 || __put_user(req32.width, &req64->width)
1046 || __put_user(req32.height, &req64->height)
1047 || __put_user(req32.pixel_format, &req64->pixel_format)
1048 || __put_user(req32.flags, &req64->flags))
1051 for (i = 0; i < 4; i++) {
1052 if (__put_user(req32.handles[i], &req64->handles[i]))
1054 if (__put_user(req32.pitches[i], &req64->pitches[i]))
1056 if (__put_user(req32.offsets[i], &req64->offsets[i]))
1058 if (__put_user(req32.modifier[i], &req64->modifier[i]))
1062 err = drm_ioctl(file, DRM_IOCTL_MODE_ADDFB2, (unsigned long)req64);
1066 if (__get_user(req32.fb_id, &req64->fb_id))
1069 if (copy_to_user(argp, &req32, sizeof(req32)))
1075 static drm_ioctl_compat_t *drm_compat_ioctls[] = {
1076 [DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
1077 [DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
1078 [DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap,
1079 [DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient,
1080 [DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats,
1081 [DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique,
1082 [DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap,
1083 [DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs,
1084 [DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs,
1085 [DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs,
1086 [DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs,
1087 [DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs,
1088 [DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap,
1089 [DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx,
1090 [DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx,
1091 [DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx,
1092 [DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma,
1094 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable,
1095 [DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info,
1096 [DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc,
1097 [DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free,
1098 [DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind,
1099 [DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind,
1101 [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc,
1102 [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free,
1103 #if defined(CONFIG_X86) || defined(CONFIG_IA64)
1104 [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw,
1106 [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
1107 [DRM_IOCTL_NR(DRM_IOCTL_MODE_ADDFB232)] = compat_drm_mode_addfb2,
1111 * Called whenever a 32-bit process running under a 64-bit kernel
1112 * performs an ioctl on /dev/drm.
1114 * \param file_priv DRM file private.
1115 * \param cmd command.
1116 * \param arg user argument.
1117 * \return zero on success or negative number on failure.
1119 long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
1121 unsigned int nr = DRM_IOCTL_NR(cmd);
1122 drm_ioctl_compat_t *fn;
1125 /* Assume that ioctls without an explicit compat routine will just
1126 * work. This may not always be a good assumption, but it's better
1127 * than always failing.
1129 if (nr >= ARRAY_SIZE(drm_compat_ioctls))
1130 return drm_ioctl(filp, cmd, arg);
1132 fn = drm_compat_ioctls[nr];
1135 ret = (*fn) (filp, cmd, arg);
1137 ret = drm_ioctl(filp, cmd, arg);
1142 EXPORT_SYMBOL(drm_compat_ioctl);