diff options
Diffstat (limited to 'drivers/char/drm/mga_ioc32.c')
| -rw-r--r-- | drivers/char/drm/mga_ioc32.c | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/drivers/char/drm/mga_ioc32.c b/drivers/char/drm/mga_ioc32.c index bc745cfa2095..77d738e75a4d 100644 --- a/drivers/char/drm/mga_ioc32.c +++ b/drivers/char/drm/mga_ioc32.c @@ -129,9 +129,76 @@ static int compat_mga_getparam(struct file *file, unsigned int cmd, DRM_IOCTL_MGA_GETPARAM, (unsigned long)getparam); } +typedef struct drm_mga_drm_bootstrap32 { + u32 texture_handle; + u32 texture_size; + u32 primary_size; + u32 secondary_bin_count; + u32 secondary_bin_size; + u32 agp_mode; + u8 agp_size; +} drm_mga_dma_bootstrap32_t; + +static int compat_mga_dma_bootstrap(struct file *file, unsigned int cmd, + unsigned long arg) +{ + drm_mga_dma_bootstrap32_t dma_bootstrap32; + drm_mga_dma_bootstrap_t __user *dma_bootstrap; + int err; + + if (copy_from_user(&dma_bootstrap32, (void __user *)arg, + sizeof(dma_bootstrap32))) + return -EFAULT; + + dma_bootstrap = compat_alloc_user_space(sizeof(*dma_bootstrap)); + if (!access_ok(VERIFY_WRITE, dma_bootstrap, sizeof(*dma_bootstrap)) + || __put_user(dma_bootstrap32.texture_handle, + &dma_bootstrap->texture_handle) + || __put_user(dma_bootstrap32.texture_size, + &dma_bootstrap->texture_size) + || __put_user(dma_bootstrap32.primary_size, + &dma_bootstrap->primary_size) + || __put_user(dma_bootstrap32.secondary_bin_count, + &dma_bootstrap->secondary_bin_count) + || __put_user(dma_bootstrap32.secondary_bin_size, + &dma_bootstrap->secondary_bin_size) + || __put_user(dma_bootstrap32.agp_mode, &dma_bootstrap->agp_mode) + || __put_user(dma_bootstrap32.agp_size, &dma_bootstrap->agp_size)) + return -EFAULT; + + err = drm_ioctl(file->f_dentry->d_inode, file, + DRM_IOCTL_MGA_DMA_BOOTSTRAP, + (unsigned long)dma_bootstrap); + if (err) + return err; + + if (__get_user(dma_bootstrap32.texture_handle, + &dma_bootstrap->texture_handle) + || __get_user(dma_bootstrap32.texture_size, + &dma_bootstrap->texture_size) + || __get_user(dma_bootstrap32.primary_size, + &dma_bootstrap->primary_size) + || __get_user(dma_bootstrap32.secondary_bin_count, + &dma_bootstrap->secondary_bin_count) + || __get_user(dma_bootstrap32.secondary_bin_size, + &dma_bootstrap->secondary_bin_size) + || __get_user(dma_bootstrap32.agp_mode, + &dma_bootstrap->agp_mode) + || __get_user(dma_bootstrap32.agp_size, + &dma_bootstrap->agp_size)) + return -EFAULT; + + if (copy_to_user((void __user *)arg, &dma_bootstrap32, + sizeof(dma_bootstrap32))) + return -EFAULT; + + return 0; +} + drm_ioctl_compat_t *mga_compat_ioctls[] = { [DRM_MGA_INIT] = compat_mga_init, [DRM_MGA_GETPARAM] = compat_mga_getparam, + [DRM_MGA_DMA_BOOTSTRAP] = compat_mga_dma_bootstrap, }; /** |