diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nvif/unpack.h')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvif/unpack.h | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nvif/unpack.h b/drivers/gpu/drm/nouveau/nvif/unpack.h new file mode 100644 index 00000000000..5933188b4a7 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nvif/unpack.h @@ -0,0 +1,24 @@ +#ifndef __NVIF_UNPACK_H__ +#define __NVIF_UNPACK_H__ + +#define nvif_unvers(d) ({ \ + ret = (size == sizeof(d)) ? 0 : -ENOSYS; \ + (ret == 0); \ +}) + +#define nvif_unpack(d,vl,vh,m) ({ \ + if ((vl) == 0 || ret == -ENOSYS) { \ + int _size = sizeof(d); \ + if (_size <= size && (d).version >= (vl) && \ + (d).version <= (vh)) { \ + data = (u8 *)data + _size; \ + size = size - _size; \ + ret = ((m) || !size) ? 0 : -E2BIG; \ + } else { \ + ret = -ENOSYS; \ + } \ + } \ + (ret == 0); \ +}) + +#endif |