diff options
| author | Eric Anholt <eric@anholt.net> | 2008-10-21 18:38:50 (GMT) |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2008-10-23 03:46:33 (GMT) |
| commit | 49568873705e45a0de77b7824a9a46d3201019a7 (patch) | |
| tree | a309fed16b27adb7c8b89dc994440f6b50ad05a5 /drivers/gpu | |
| parent | 42f52ef8d96b1434f12ad9f895b5412fda392847 (diff) | |
| download | linux-49568873705e45a0de77b7824a9a46d3201019a7.tar.xz | |
drm: Add 32-bit compatibility for DRM_IOCTL_UPDATE_DRAW.
This fixes vblank support for a 32-bit X Server on a 64-bit kernel.
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/drm_ioc32.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c index 90f5a8d..920b72f 100644 --- a/drivers/gpu/drm/drm_ioc32.c +++ b/drivers/gpu/drm/drm_ioc32.c @@ -64,6 +64,8 @@ #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 { @@ -952,6 +954,37 @@ static int compat_drm_sg_free(struct file *file, unsigned int cmd, DRM_IOCTL_SG_FREE, (unsigned long)request); } +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; +} + struct drm_wait_vblank_request32 { enum drm_vblank_seq_type type; unsigned int sequence; @@ -1033,6 +1066,7 @@ drm_ioctl_compat_t *drm_compat_ioctls[] = { #endif [DRM_IOCTL_NR(DRM_IOCTL_SG_ALLOC32)] = compat_drm_sg_alloc, [DRM_IOCTL_NR(DRM_IOCTL_SG_FREE32)] = compat_drm_sg_free, + [DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw, [DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank, }; |