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      1 /*
      2  * Copyright (c) Fuzhou Rockchip Electronics Co.Ltd
      3  * Authors:
      4  *       Mark Yao <yzq (at) rock-chips.com>
      5  *
      6  * based on exynos_drm.h
      7  *
      8  * Permission is hereby granted, free of charge, to any person obtaining a
      9  * copy of this software and associated documentation files (the "Software"),
     10  * to deal in the Software without restriction, including without limitation
     11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     12  * and/or sell copies of the Software, and to permit persons to whom the
     13  * Software is furnished to do so, subject to the following conditions:
     14  *
     15  * The above copyright notice and this permission notice (including the next
     16  * paragraph) shall be included in all copies or substantial portions of the
     17  * Software.
     18  *
     19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     20  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     22  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     23  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     24  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     25  * SOFTWARE.
     26  *
     27  */
     28 
     29 #ifndef _ROCKCHIP_DRM_H_
     30 #define _ROCKCHIP_DRM_H_
     31 
     32 #include <stdint.h>
     33 #include "drm.h"
     34 
     35 /**
     36  * User-desired buffer creation information structure.
     37  *
     38  * @size: user-desired memory allocation size.
     39  *	- this size value would be page-aligned internally.
     40  * @flags: user request for setting memory type or cache attributes.
     41  * @handle: returned a handle to created gem object.
     42  *	- this handle will be set by gem module of kernel side.
     43  */
     44 struct drm_rockchip_gem_create {
     45 	uint64_t size;
     46 	uint32_t flags;
     47 	uint32_t handle;
     48 };
     49 
     50 /**
     51  * A structure for getting buffer offset.
     52  *
     53  * @handle: a pointer to gem object created.
     54  * @pad: just padding to be 64-bit aligned.
     55  * @offset: relatived offset value of the memory region allocated.
     56  *	- this value should be set by user.
     57  */
     58 struct drm_rockchip_gem_map_off {
     59 	uint32_t handle;
     60 	uint32_t pad;
     61 	uint64_t offset;
     62 };
     63 
     64 #define DRM_ROCKCHIP_GEM_CREATE	0x00
     65 #define DRM_ROCKCHIP_GEM_MAP_OFFSET	0x01
     66 
     67 #define DRM_IOCTL_ROCKCHIP_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + \
     68 		DRM_ROCKCHIP_GEM_CREATE, struct drm_rockchip_gem_create)
     69 
     70 #define DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET DRM_IOWR(DRM_COMMAND_BASE + \
     71 		DRM_ROCKCHIP_GEM_MAP_OFFSET, struct drm_rockchip_gem_map_off)
     72 
     73 #endif
     74