microsoft
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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/drivers/gpu/drm/drm_ioc32.c

1112 строки
33 KiB
C
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/**
* \file drm_ioc32.c
*
* 32-bit ioctl compatibility routines for the DRM.
*
* \author Paul Mackerras <paulus@samba.org>
*
* Copyright (C) Paul Mackerras 2005.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include <linux/compat.h>
#include "drmP.h"
#include "drm_core.h"
#define DRM_IOCTL_VERSION32 DRM_IOWR(0x00, drm_version32_t)
#define DRM_IOCTL_GET_UNIQUE32 DRM_IOWR(0x01, drm_unique32_t)
#define DRM_IOCTL_GET_MAP32 DRM_IOWR(0x04, drm_map32_t)
#define DRM_IOCTL_GET_CLIENT32 DRM_IOWR(0x05, drm_client32_t)
#define DRM_IOCTL_GET_STATS32 DRM_IOR( 0x06, drm_stats32_t)
#define DRM_IOCTL_SET_UNIQUE32 DRM_IOW( 0x10, drm_unique32_t)
#define DRM_IOCTL_ADD_MAP32 DRM_IOWR(0x15, drm_map32_t)
#define DRM_IOCTL_ADD_BUFS32 DRM_IOWR(0x16, drm_buf_desc32_t)
#define DRM_IOCTL_MARK_BUFS32 DRM_IOW( 0x17, drm_buf_desc32_t)
#define DRM_IOCTL_INFO_BUFS32 DRM_IOWR(0x18, drm_buf_info32_t)
#define DRM_IOCTL_MAP_BUFS32 DRM_IOWR(0x19, drm_buf_map32_t)
#define DRM_IOCTL_FREE_BUFS32 DRM_IOW( 0x1a, drm_buf_free32_t)
#define DRM_IOCTL_RM_MAP32 DRM_IOW( 0x1b, drm_map32_t)
#define DRM_IOCTL_SET_SAREA_CTX32 DRM_IOW( 0x1c, drm_ctx_priv_map32_t)
#define DRM_IOCTL_GET_SAREA_CTX32 DRM_IOWR(0x1d, drm_ctx_priv_map32_t)
#define DRM_IOCTL_RES_CTX32 DRM_IOWR(0x26, drm_ctx_res32_t)
#define DRM_IOCTL_DMA32 DRM_IOWR(0x29, drm_dma32_t)
#define DRM_IOCTL_AGP_ENABLE32 DRM_IOW( 0x32, drm_agp_mode32_t)
#define DRM_IOCTL_AGP_INFO32 DRM_IOR( 0x33, drm_agp_info32_t)
#define DRM_IOCTL_AGP_ALLOC32 DRM_IOWR(0x34, drm_agp_buffer32_t)
#define DRM_IOCTL_AGP_FREE32 DRM_IOW( 0x35, drm_agp_buffer32_t)
#define DRM_IOCTL_AGP_BIND32 DRM_IOW( 0x36, drm_agp_binding32_t)
#define DRM_IOCTL_AGP_UNBIND32 DRM_IOW( 0x37, drm_agp_binding32_t)
#define DRM_IOCTL_SG_ALLOC32 DRM_IOW( 0x38, drm_scatter_gather32_t)
#define DRM_IOCTL_SG_FREE32 DRM_IOW( 0x39, drm_scatter_gather32_t)
#define DRM_IOCTL_UPDATE_DRAW32 DRM_IOW( 0x3f, drm_update_draw32_t)
#define DRM_IOCTL_WAIT_VBLANK32 DRM_IOWR(0x3a, drm_wait_vblank32_t)
typedef struct drm_version_32 {
int version_major; /**< Major version */
int version_minor; /**< Minor version */
int version_patchlevel; /**< Patch level */
u32 name_len; /**< Length of name buffer */
u32 name; /**< Name of driver */
u32 date_len; /**< Length of date buffer */
u32 date; /**< User-space buffer to hold date */
u32 desc_len; /**< Length of desc buffer */
u32 desc; /**< User-space buffer to hold desc */
} drm_version32_t;
static int compat_drm_version(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_version32_t v32;
struct drm_version __user *version;
int err;
if (copy_from_user(&v32, (void __user *)arg, sizeof(v32)))
return -EFAULT;
version = compat_alloc_user_space(sizeof(*version));
if (!access_ok(VERIFY_WRITE, version, sizeof(*version)))
return -EFAULT;
if (__put_user(v32.name_len, &version->name_len)
|| __put_user((void __user *)(unsigned long)v32.name,
&version->name)
|| __put_user(v32.date_len, &version->date_len)
|| __put_user((void __user *)(unsigned long)v32.date,
&version->date)
|| __put_user(v32.desc_len, &version->desc_len)
|| __put_user((void __user *)(unsigned long)v32.desc,
&version->desc))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_VERSION, (unsigned long)version);
if (err)
return err;
if (__get_user(v32.version_major, &version->version_major)
|| __get_user(v32.version_minor, &version->version_minor)
|| __get_user(v32.version_patchlevel, &version->version_patchlevel)
|| __get_user(v32.name_len, &version->name_len)
|| __get_user(v32.date_len, &version->date_len)
|| __get_user(v32.desc_len, &version->desc_len))
return -EFAULT;
if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))
return -EFAULT;
return 0;
}
typedef struct drm_unique32 {
u32 unique_len; /**< Length of unique */
u32 unique; /**< Unique name for driver instantiation */
} drm_unique32_t;
static int compat_drm_getunique(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_unique32_t uq32;
struct drm_unique __user *u;
int err;
if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
return -EFAULT;
u = compat_alloc_user_space(sizeof(*u));
if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
return -EFAULT;
if (__put_user(uq32.unique_len, &u->unique_len)
|| __put_user((void __user *)(unsigned long)uq32.unique,
&u->unique))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_GET_UNIQUE, (unsigned long)u);
if (err)
return err;
if (__get_user(uq32.unique_len, &u->unique_len))
return -EFAULT;
if (copy_to_user((void __user *)arg, &uq32, sizeof(uq32)))
return -EFAULT;
return 0;
}
static int compat_drm_setunique(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_unique32_t uq32;
struct drm_unique __user *u;
if (copy_from_user(&uq32, (void __user *)arg, sizeof(uq32)))
return -EFAULT;
u = compat_alloc_user_space(sizeof(*u));
if (!access_ok(VERIFY_WRITE, u, sizeof(*u)))
return -EFAULT;
if (__put_user(uq32.unique_len, &u->unique_len)
|| __put_user((void __user *)(unsigned long)uq32.unique,
&u->unique))
return -EFAULT;
return drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_SET_UNIQUE, (unsigned long)u);
}
typedef struct drm_map32 {
u32 offset; /**< Requested physical address (0 for SAREA)*/
u32 size; /**< Requested physical size (bytes) */
enum drm_map_type type; /**< Type of memory to map */
enum drm_map_flags flags; /**< Flags */
u32 handle; /**< User-space: "Handle" to pass to mmap() */
int mtrr; /**< MTRR slot used */
} drm_map32_t;
static int compat_drm_getmap(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_map32_t __user *argp = (void __user *)arg;
drm_map32_t m32;
struct drm_map __user *map;
int idx, err;
void *handle;
if (get_user(idx, &argp->offset))
return -EFAULT;
map = compat_alloc_user_space(sizeof(*map));
if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
return -EFAULT;
if (__put_user(idx, &map->offset))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_GET_MAP, (unsigned long)map);
if (err)
return err;
if (__get_user(m32.offset, &map->offset)
|| __get_user(m32.size, &map->size)
|| __get_user(m32.type, &map->type)
|| __get_user(m32.flags, &map->flags)
|| __get_user(handle, &map->handle)
|| __get_user(m32.mtrr, &map->mtrr))
return -EFAULT;
m32.handle = (unsigned long)handle;
if (copy_to_user(argp, &m32, sizeof(m32)))
return -EFAULT;
return 0;
}
static int compat_drm_addmap(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_map32_t __user *argp = (void __user *)arg;
drm_map32_t m32;
struct drm_map __user *map;
int err;
void *handle;
if (copy_from_user(&m32, argp, sizeof(m32)))
return -EFAULT;
map = compat_alloc_user_space(sizeof(*map));
if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
return -EFAULT;
if (__put_user(m32.offset, &map->offset)
|| __put_user(m32.size, &map->size)
|| __put_user(m32.type, &map->type)
|| __put_user(m32.flags, &map->flags))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_ADD_MAP, (unsigned long)map);
if (err)
return err;
if (__get_user(m32.offset, &map->offset)
|| __get_user(m32.mtrr, &map->mtrr)
|| __get_user(handle, &map->handle))
return -EFAULT;
m32.handle = (unsigned long)handle;
if (m32.handle != (unsigned long)handle && printk_ratelimit())
printk(KERN_ERR "compat_drm_addmap truncated handle"
" %p for type %d offset %x\n",
handle, m32.type, m32.offset);
if (copy_to_user(argp, &m32, sizeof(m32)))
return -EFAULT;
return 0;
}
static int compat_drm_rmmap(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_map32_t __user *argp = (void __user *)arg;
struct drm_map __user *map;
u32 handle;
if (get_user(handle, &argp->handle))
return -EFAULT;
map = compat_alloc_user_space(sizeof(*map));
if (!access_ok(VERIFY_WRITE, map, sizeof(*map)))
return -EFAULT;
if (__put_user((void *)(unsigned long)handle, &map->handle))
return -EFAULT;
return drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_RM_MAP, (unsigned long)map);
}
typedef struct drm_client32 {
int idx; /**< Which client desired? */
int auth; /**< Is client authenticated? */
u32 pid; /**< Process ID */
u32 uid; /**< User ID */
u32 magic; /**< Magic */
u32 iocs; /**< Ioctl count */
} drm_client32_t;
static int compat_drm_getclient(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_client32_t c32;
drm_client32_t __user *argp = (void __user *)arg;
struct drm_client __user *client;
int idx, err;
if (get_user(idx, &argp->idx))
return -EFAULT;
client = compat_alloc_user_space(sizeof(*client));
if (!access_ok(VERIFY_WRITE, client, sizeof(*client)))
return -EFAULT;
if (__put_user(idx, &client->idx))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_GET_CLIENT, (unsigned long)client);
if (err)
return err;
if (__get_user(c32.auth, &client->auth)
|| __get_user(c32.pid, &client->pid)
|| __get_user(c32.uid, &client->uid)
|| __get_user(c32.magic, &client->magic)
|| __get_user(c32.iocs, &client->iocs))
return -EFAULT;
if (copy_to_user(argp, &c32, sizeof(c32)))
return -EFAULT;
return 0;
}
typedef struct drm_stats32 {
u32 count;
struct {
u32 value;
enum drm_stat_type type;
} data[15];
} drm_stats32_t;
static int compat_drm_getstats(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_stats32_t s32;
drm_stats32_t __user *argp = (void __user *)arg;
struct drm_stats __user *stats;
int i, err;
stats = compat_alloc_user_space(sizeof(*stats));
if (!access_ok(VERIFY_WRITE, stats, sizeof(*stats)))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_GET_STATS, (unsigned long)stats);
if (err)
return err;
if (__get_user(s32.count, &stats->count))
return -EFAULT;
for (i = 0; i < 15; ++i)
if (__get_user(s32.data[i].value, &stats->data[i].value)
|| __get_user(s32.data[i].type, &stats->data[i].type))
return -EFAULT;
if (copy_to_user(argp, &s32, sizeof(s32)))
return -EFAULT;
return 0;
}
typedef struct drm_buf_desc32 {
int count; /**< Number of buffers of this size */
int size; /**< Size in bytes */
int low_mark; /**< Low water mark */
int high_mark; /**< High water mark */
int flags;
u32 agp_start; /**< Start address in the AGP aperture */
} drm_buf_desc32_t;
static int compat_drm_addbufs(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_buf_desc32_t __user *argp = (void __user *)arg;
struct drm_buf_desc __user *buf;
int err;
unsigned long agp_start;
buf = compat_alloc_user_space(sizeof(*buf));
if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf))
|| !access_ok(VERIFY_WRITE, argp, sizeof(*argp)))
return -EFAULT;
if (__copy_in_user(buf, argp, offsetof(drm_buf_desc32_t, agp_start))
|| __get_user(agp_start, &argp->agp_start)
|| __put_user(agp_start, &buf->agp_start))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_ADD_BUFS, (unsigned long)buf);
if (err)
return err;
if (__copy_in_user(argp, buf, offsetof(drm_buf_desc32_t, agp_start))
|| __get_user(agp_start, &buf->agp_start)
|| __put_user(agp_start, &argp->agp_start))
return -EFAULT;
return 0;
}
static int compat_drm_markbufs(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_buf_desc32_t b32;
drm_buf_desc32_t __user *argp = (void __user *)arg;
struct drm_buf_desc __user *buf;
if (copy_from_user(&b32, argp, sizeof(b32)))
return -EFAULT;
buf = compat_alloc_user_space(sizeof(*buf));
if (!access_ok(VERIFY_WRITE, buf, sizeof(*buf)))
return -EFAULT;
if (__put_user(b32.size, &buf->size)
|| __put_user(b32.low_mark, &buf->low_mark)
|| __put_user(b32.high_mark, &buf->high_mark))
return -EFAULT;
return drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_MARK_BUFS, (unsigned long)buf);
}
typedef struct drm_buf_info32 {
int count; /**< Entries in list */
u32 list;
} drm_buf_info32_t;
static int compat_drm_infobufs(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_buf_info32_t req32;
drm_buf_info32_t __user *argp = (void __user *)arg;
drm_buf_desc32_t __user *to;
struct drm_buf_info __user *request;
struct drm_buf_desc __user *list;
size_t nbytes;
int i, err;
int count, actual;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
count = req32.count;
to = (drm_buf_desc32_t __user *) (unsigned long)req32.list;
if (count < 0)
count = 0;
if (count > 0
&& !access_ok(VERIFY_WRITE, to, count * sizeof(drm_buf_desc32_t)))
return -EFAULT;
nbytes = sizeof(*request) + count * sizeof(struct drm_buf_desc);
request = compat_alloc_user_space(nbytes);
if (!access_ok(VERIFY_WRITE, request, nbytes))
return -EFAULT;
list = (struct drm_buf_desc *) (request + 1);
if (__put_user(count, &request->count)
|| __put_user(list, &request->list))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_INFO_BUFS, (unsigned long)request);
if (err)
return err;
if (__get_user(actual, &request->count))
return -EFAULT;
if (count >= actual)
for (i = 0; i < actual; ++i)
if (__copy_in_user(&to[i], &list[i],
offsetof(struct drm_buf_desc, flags)))
return -EFAULT;
if (__put_user(actual, &argp->count))
return -EFAULT;
return 0;
}
typedef struct drm_buf_pub32 {
int idx; /**< Index into the master buffer list */
int total; /**< Buffer size */
int used; /**< Amount of buffer in use (for DMA) */
u32 address; /**< Address of buffer */
} drm_buf_pub32_t;
typedef struct drm_buf_map32 {
int count; /**< Length of the buffer list */
u32 virtual; /**< Mmap'd area in user-virtual */
u32 list; /**< Buffer information */
} drm_buf_map32_t;
static int compat_drm_mapbufs(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_buf_map32_t __user *argp = (void __user *)arg;
drm_buf_map32_t req32;
drm_buf_pub32_t __user *list32;
struct drm_buf_map __user *request;
struct drm_buf_pub __user *list;
int i, err;
int count, actual;
size_t nbytes;
void __user *addr;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
count = req32.count;
list32 = (void __user *)(unsigned long)req32.list;
if (count < 0)
return -EINVAL;
nbytes = sizeof(*request) + count * sizeof(struct drm_buf_pub);
request = compat_alloc_user_space(nbytes);
if (!access_ok(VERIFY_WRITE, request, nbytes))
return -EFAULT;
list = (struct drm_buf_pub *) (request + 1);
if (__put_user(count, &request->count)
|| __put_user(list, &request->list))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_MAP_BUFS, (unsigned long)request);
if (err)
return err;
if (__get_user(actual, &request->count))
return -EFAULT;
if (count >= actual)
for (i = 0; i < actual; ++i)
if (__copy_in_user(&list32[i], &list[i],
offsetof(struct drm_buf_pub, address))
|| __get_user(addr, &list[i].address)
|| __put_user((unsigned long)addr,
&list32[i].address))
return -EFAULT;
if (__put_user(actual, &argp->count)
|| __get_user(addr, &request->virtual)
|| __put_user((unsigned long)addr, &argp->virtual))
return -EFAULT;
return 0;
}
typedef struct drm_buf_free32 {
int count;
u32 list;
} drm_buf_free32_t;
static int compat_drm_freebufs(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_buf_free32_t req32;
struct drm_buf_free __user *request;
drm_buf_free32_t __user *argp = (void __user *)arg;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
request = compat_alloc_user_space(sizeof(*request));
if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
return -EFAULT;
if (__put_user(req32.count, &request->count)
|| __put_user((int __user *)(unsigned long)req32.list,
&request->list))
return -EFAULT;
return drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_FREE_BUFS, (unsigned long)request);
}
typedef struct drm_ctx_priv_map32 {
unsigned int ctx_id; /**< Context requesting private mapping */
u32 handle; /**< Handle of map */
} drm_ctx_priv_map32_t;
static int compat_drm_setsareactx(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_ctx_priv_map32_t req32;
struct drm_ctx_priv_map __user *request;
drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
request = compat_alloc_user_space(sizeof(*request));
if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
return -EFAULT;
if (__put_user(req32.ctx_id, &request->ctx_id)
|| __put_user((void *)(unsigned long)req32.handle,
&request->handle))
return -EFAULT;
return drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_SET_SAREA_CTX, (unsigned long)request);
}
static int compat_drm_getsareactx(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct drm_ctx_priv_map __user *request;
drm_ctx_priv_map32_t __user *argp = (void __user *)arg;
int err;
unsigned int ctx_id;
void *handle;
if (!access_ok(VERIFY_WRITE, argp, sizeof(*argp))
|| __get_user(ctx_id, &argp->ctx_id))
return -EFAULT;
request = compat_alloc_user_space(sizeof(*request));
if (!access_ok(VERIFY_WRITE, request, sizeof(*request)))
return -EFAULT;
if (__put_user(ctx_id, &request->ctx_id))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_GET_SAREA_CTX, (unsigned long)request);
if (err)
return err;
if (__get_user(handle, &request->handle)
|| __put_user((unsigned long)handle, &argp->handle))
return -EFAULT;
return 0;
}
typedef struct drm_ctx_res32 {
int count;
u32 contexts;
} drm_ctx_res32_t;
static int compat_drm_resctx(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_ctx_res32_t __user *argp = (void __user *)arg;
drm_ctx_res32_t res32;
struct drm_ctx_res __user *res;
int err;
if (copy_from_user(&res32, argp, sizeof(res32)))
return -EFAULT;
res = compat_alloc_user_space(sizeof(*res));
if (!access_ok(VERIFY_WRITE, res, sizeof(*res)))
return -EFAULT;
if (__put_user(res32.count, &res->count)
|| __put_user((struct drm_ctx __user *) (unsigned long)res32.contexts,
&res->contexts))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_RES_CTX, (unsigned long)res);
if (err)
return err;
if (__get_user(res32.count, &res->count)
|| __put_user(res32.count, &argp->count))
return -EFAULT;
return 0;
}
typedef struct drm_dma32 {
int context; /**< Context handle */
int send_count; /**< Number of buffers to send */
u32 send_indices; /**< List of handles to buffers */
u32 send_sizes; /**< Lengths of data to send */
enum drm_dma_flags flags; /**< Flags */
int request_count; /**< Number of buffers requested */
int request_size; /**< Desired size for buffers */
u32 request_indices; /**< Buffer information */
u32 request_sizes;
int granted_count; /**< Number of buffers granted */
} drm_dma32_t;
static int compat_drm_dma(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_dma32_t d32;
drm_dma32_t __user *argp = (void __user *)arg;
struct drm_dma __user *d;
int err;
if (copy_from_user(&d32, argp, sizeof(d32)))
return -EFAULT;
d = compat_alloc_user_space(sizeof(*d));
if (!access_ok(VERIFY_WRITE, d, sizeof(*d)))
return -EFAULT;
if (__put_user(d32.context, &d->context)
|| __put_user(d32.send_count, &d->send_count)
|| __put_user((int __user *)(unsigned long)d32.send_indices,
&d->send_indices)
|| __put_user((int __user *)(unsigned long)d32.send_sizes,
&d->send_sizes)
|| __put_user(d32.flags, &d->flags)
|| __put_user(d32.request_count, &d->request_count)
|| __put_user((int __user *)(unsigned long)d32.request_indices,
&d->request_indices)
|| __put_user((int __user *)(unsigned long)d32.request_sizes,
&d->request_sizes))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_DMA, (unsigned long)d);
if (err)
return err;
if (__get_user(d32.request_size, &d->request_size)
|| __get_user(d32.granted_count, &d->granted_count)
|| __put_user(d32.request_size, &argp->request_size)
|| __put_user(d32.granted_count, &argp->granted_count))
return -EFAULT;
return 0;
}
#if __OS_HAS_AGP
typedef struct drm_agp_mode32 {
u32 mode; /**< AGP mode */
} drm_agp_mode32_t;
static int compat_drm_agp_enable(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_agp_mode32_t __user *argp = (void __user *)arg;
drm_agp_mode32_t m32;
struct drm_agp_mode __user *mode;
if (get_user(m32.mode, &argp->mode))
return -EFAULT;
mode = compat_alloc_user_space(sizeof(*mode));
if (put_user(m32.mode, &mode->mode))
return -EFAULT;
return drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_AGP_ENABLE, (unsigned long)mode);
}
typedef struct drm_agp_info32 {
int agp_version_major;
int agp_version_minor;
u32 mode;
u32 aperture_base; /* physical address */
u32 aperture_size; /* bytes */
u32 memory_allowed; /* bytes */
u32 memory_used;
/* PCI information */
unsigned short id_vendor;
unsigned short id_device;
} drm_agp_info32_t;
static int compat_drm_agp_info(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_agp_info32_t __user *argp = (void __user *)arg;
drm_agp_info32_t i32;
struct drm_agp_info __user *info;
int err;
info = compat_alloc_user_space(sizeof(*info));
if (!access_ok(VERIFY_WRITE, info, sizeof(*info)))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_AGP_INFO, (unsigned long)info);
if (err)
return err;
if (__get_user(i32.agp_version_major, &info->agp_version_major)
|| __get_user(i32.agp_version_minor, &info->agp_version_minor)
|| __get_user(i32.mode, &info->mode)
|| __get_user(i32.aperture_base, &info->aperture_base)
|| __get_user(i32.aperture_size, &info->aperture_size)
|| __get_user(i32.memory_allowed, &info->memory_allowed)
|| __get_user(i32.memory_used, &info->memory_used)
|| __get_user(i32.id_vendor, &info->id_vendor)
|| __get_user(i32.id_device, &info->id_device))
return -EFAULT;
if (copy_to_user(argp, &i32, sizeof(i32)))
return -EFAULT;
return 0;
}
typedef struct drm_agp_buffer32 {
u32 size; /**< In bytes -- will round to page boundary */
u32 handle; /**< Used for binding / unbinding */
u32 type; /**< Type of memory to allocate */
u32 physical; /**< Physical used by i810 */
} drm_agp_buffer32_t;
static int compat_drm_agp_alloc(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_agp_buffer32_t __user *argp = (void __user *)arg;
drm_agp_buffer32_t req32;
struct drm_agp_buffer __user *request;
int err;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
request = compat_alloc_user_space(sizeof(*request));
if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
|| __put_user(req32.size, &request->size)
|| __put_user(req32.type, &request->type))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_AGP_ALLOC, (unsigned long)request);
if (err)
return err;
if (__get_user(req32.handle, &request->handle)
|| __get_user(req32.physical, &request->physical)
|| copy_to_user(argp, &req32, sizeof(req32))) {
drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_AGP_FREE, (unsigned long)request);
return -EFAULT;
}
return 0;
}
static int compat_drm_agp_free(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_agp_buffer32_t __user *argp = (void __user *)arg;
struct drm_agp_buffer __user *request;
u32 handle;
request = compat_alloc_user_space(sizeof(*request));
if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
|| get_user(handle, &argp->handle)
|| __put_user(handle, &request->handle))
return -EFAULT;
return drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_AGP_FREE, (unsigned long)request);
}
typedef struct drm_agp_binding32 {
u32 handle; /**< From drm_agp_buffer */
u32 offset; /**< In bytes -- will round to page boundary */
} drm_agp_binding32_t;
static int compat_drm_agp_bind(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_agp_binding32_t __user *argp = (void __user *)arg;
drm_agp_binding32_t req32;
struct drm_agp_binding __user *request;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
request = compat_alloc_user_space(sizeof(*request));
if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
|| __put_user(req32.handle, &request->handle)
|| __put_user(req32.offset, &request->offset))
return -EFAULT;
return drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_AGP_BIND, (unsigned long)request);
}
static int compat_drm_agp_unbind(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_agp_binding32_t __user *argp = (void __user *)arg;
struct drm_agp_binding __user *request;
u32 handle;
request = compat_alloc_user_space(sizeof(*request));
if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
|| get_user(handle, &argp->handle)
|| __put_user(handle, &request->handle))
return -EFAULT;
return drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_AGP_UNBIND, (unsigned long)request);
}
#endif /* __OS_HAS_AGP */
typedef struct drm_scatter_gather32 {
u32 size; /**< In bytes -- will round to page boundary */
u32 handle; /**< Used for mapping / unmapping */
} drm_scatter_gather32_t;
static int compat_drm_sg_alloc(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_scatter_gather32_t __user *argp = (void __user *)arg;
struct drm_scatter_gather __user *request;
int err;
unsigned long x;
request = compat_alloc_user_space(sizeof(*request));
if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
|| !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
|| __get_user(x, &argp->size)
|| __put_user(x, &request->size))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_SG_ALLOC, (unsigned long)request);
if (err)
return err;
/* XXX not sure about the handle conversion here... */
if (__get_user(x, &request->handle)
|| __put_user(x >> PAGE_SHIFT, &argp->handle))
return -EFAULT;
return 0;
}
static int compat_drm_sg_free(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_scatter_gather32_t __user *argp = (void __user *)arg;
struct drm_scatter_gather __user *request;
unsigned long x;
request = compat_alloc_user_space(sizeof(*request));
if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
|| !access_ok(VERIFY_WRITE, argp, sizeof(*argp))
|| __get_user(x, &argp->handle)
|| __put_user(x << PAGE_SHIFT, &request->handle))
return -EFAULT;
return drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_SG_FREE, (unsigned long)request);
}
#if defined(CONFIG_X86) || defined(CONFIG_IA64)
typedef struct drm_update_draw32 {
drm_drawable_t handle;
unsigned int type;
unsigned int num;
/* 64-bit version has a 32-bit pad here */
u64 data; /**< Pointer */
} __attribute__((packed)) drm_update_draw32_t;
static int compat_drm_update_draw(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_update_draw32_t update32;
struct drm_update_draw __user *request;
int err;
if (copy_from_user(&update32, (void __user *)arg, sizeof(update32)))
return -EFAULT;
request = compat_alloc_user_space(sizeof(*request));
if (!access_ok(VERIFY_WRITE, request, sizeof(*request)) ||
__put_user(update32.handle, &request->handle) ||
__put_user(update32.type, &request->type) ||
__put_user(update32.num, &request->num) ||
__put_user(update32.data, &request->data))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_UPDATE_DRAW, (unsigned long)request);
return err;
}
#endif
struct drm_wait_vblank_request32 {
enum drm_vblank_seq_type type;
unsigned int sequence;
u32 signal;
};
struct drm_wait_vblank_reply32 {
enum drm_vblank_seq_type type;
unsigned int sequence;
s32 tval_sec;
s32 tval_usec;
};
typedef union drm_wait_vblank32 {
struct drm_wait_vblank_request32 request;
struct drm_wait_vblank_reply32 reply;
} drm_wait_vblank32_t;
static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
unsigned long arg)
{
drm_wait_vblank32_t __user *argp = (void __user *)arg;
drm_wait_vblank32_t req32;
union drm_wait_vblank __user *request;
int err;
if (copy_from_user(&req32, argp, sizeof(req32)))
return -EFAULT;
request = compat_alloc_user_space(sizeof(*request));
if (!access_ok(VERIFY_WRITE, request, sizeof(*request))
|| __put_user(req32.request.type, &request->request.type)
|| __put_user(req32.request.sequence, &request->request.sequence)
|| __put_user(req32.request.signal, &request->request.signal))
return -EFAULT;
err = drm_ioctl(file->f_path.dentry->d_inode, file,
DRM_IOCTL_WAIT_VBLANK, (unsigned long)request);
if (err)
return err;
if (__get_user(req32.reply.type, &request->reply.type)
|| __get_user(req32.reply.sequence, &request->reply.sequence)
|| __get_user(req32.reply.tval_sec, &request->reply.tval_sec)
|| __get_user(req32.reply.tval_usec, &request->reply.tval_usec))
return -EFAULT;
if (copy_to_user(argp, &req32, sizeof(req32)))
return -EFAULT;
return 0;
}
drm_ioctl_compat_t *drm_compat_ioctls[] = {
[DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
[DRM_IOCTL_NR(DRM_IOCTL_GET_UNIQUE32)] = compat_drm_getunique,
[DRM_IOCTL_NR(DRM_IOCTL_GET_MAP32)] = compat_drm_getmap,
[DRM_IOCTL_NR(DRM_IOCTL_GET_CLIENT32)] = compat_drm_getclient,
[DRM_IOCTL_NR(DRM_IOCTL_GET_STATS32)] = compat_drm_getstats,
[DRM_IOCTL_NR(DRM_IOCTL_SET_UNIQUE32)] = compat_drm_setunique,
[DRM_IOCTL_NR(DRM_IOCTL_ADD_MAP32)] = compat_drm_addmap,
[DRM_IOCTL_NR(DRM_IOCTL_ADD_BUFS32)] = compat_drm_addbufs,
[DRM_IOCTL_NR(DRM_IOCTL_MARK_BUFS32)] = compat_drm_markbufs,
[DRM_IOCTL_NR(DRM_IOCTL_INFO_BUFS32)] = compat_drm_infobufs,
[DRM_IOCTL_NR(DRM_IOCTL_MAP_BUFS32)] = compat_drm_mapbufs,
[DRM_IOCTL_NR(DRM_IOCTL_FREE_BUFS32)] = compat_drm_freebufs,
[DRM_IOCTL_NR(DRM_IOCTL_RM_MAP32)] = compat_drm_rmmap,
[DRM_IOCTL_NR(DRM_IOCTL_SET_SAREA_CTX32)] = compat_drm_setsareactx,
[DRM_IOCTL_NR(DRM_IOCTL_GET_SAREA_CTX32)] = compat_drm_getsareactx,
[DRM_IOCTL_NR(DRM_IOCTL_RES_CTX32)] = compat_drm_resctx,
[DRM_IOCTL_NR(DRM_IOCTL_DMA32)] = compat_drm_dma,
#if __OS_HAS_AGP
[DRM_IOCTL_NR(DRM_IOCTL_AGP_ENABLE32)] = compat_drm_agp_enable,
[DRM_IOCTL_NR(DRM_IOCTL_AGP_INFO32)] = compat_drm_agp_info,
[DRM_IOCTL_NR(DRM_IOCTL_AGP_ALLOC32)] = compat_drm_agp_alloc,
[DRM_IOCTL_NR(DRM_IOCTL_AGP_FREE32)] = compat_drm_agp_free,
[DRM_IOCTL_NR(DRM_IOCTL_AGP_BIND32)] = compat_drm_agp_bind,
[DRM_IOCTL_NR(DRM_IOCTL_AGP_UNBIND32)] = compat_drm_agp_unbind,
#endif
[DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc,
[DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free,
#if defined(CONFIG_X86) || defined(CONFIG_IA64)
[DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw,
#endif
[DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
};
/**
* Called whenever a 32-bit process running under a 64-bit kernel
* performs an ioctl on /dev/drm.
*
* \param file_priv DRM file private.
* \param cmd command.
* \param arg user argument.
* \return zero on success or negative number on failure.
*/
long drm_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
{
unsigned int nr = DRM_IOCTL_NR(cmd);
drm_ioctl_compat_t *fn;
int ret;
/* Assume that ioctls without an explicit compat routine will just
* work. This may not always be a good assumption, but it's better
* than always failing.
*/
if (nr >= ARRAY_SIZE(drm_compat_ioctls))
return drm_ioctl(filp->f_dentry->d_inode, filp, cmd, arg);
fn = drm_compat_ioctls[nr];
lock_kernel(); /* XXX for now */
if (fn != NULL)
ret = (*fn) (filp, cmd, arg);
else
ret = drm_ioctl(filp->f_path.dentry->d_inode, filp, cmd, arg);
unlock_kernel();
return ret;
}
EXPORT_SYMBOL(drm_compat_ioctl);
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