include/drm/mediatek_drm.h

/*
 * Copyright (c) 2015 MediaTek Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */


#ifndef _UAPI_MEDIATEK_DRM_H
#define _UAPI_MEDIATEK_DRM_H

#include "drm.h"

/**
 * User-desired buffer creation information structure.
 *
 * @size: user-desired memory allocation size.
 *      - this size value would be page-aligned internally.
 * @flags: user request for setting memory type or cache attributes.
 * @handle: returned a handle to created gem object.
 *	- this handle will be set by gem module of kernel side.
 */
struct drm_mtk_gem_create {
	uint64_t size;
	uint32_t flags;
	uint32_t handle;
};

/**
 * A structure for getting buffer offset.
 *
 * @handle: a pointer to gem object created.
 * @pad: just padding to be 64-bit aligned.
 * @offset: relatived offset value of the memory region allocated.
 *	- this value should be set by user.
 */
struct drm_mtk_gem_map_off {
	uint32_t handle;
	uint32_t pad;
	uint64_t offset;
};

#define DRM_MTK_GEM_CREATE              0x00
#define DRM_MTK_GEM_MAP_OFFSET          0x01

#define DRM_IOCTL_MTK_GEM_CREATE        DRM_IOWR(DRM_COMMAND_BASE + \
                DRM_MTK_GEM_CREATE, struct drm_mtk_gem_create)

#define DRM_IOCTL_MTK_GEM_MAP_OFFSET    DRM_IOWR(DRM_COMMAND_BASE + \
                DRM_MTK_GEM_MAP_OFFSET, struct drm_mtk_gem_map_off)


#endif /* _UAPI_MEDIATEK_DRM_H */