On Fri, Sep 19, 2014 at 1:47 AM, Mark yao mark.yao@rock-chips.com wrote:
diff --git a/include/uapi/drm/rockchip_drm.h b/include/uapi/drm/rockchip_drm.h new file mode 100644 index 0000000..8f8e60e --- /dev/null +++ b/include/uapi/drm/rockchip_drm.h @@ -0,0 +1,97 @@ +/*
- Copyright (c) Fuzhou Rockchip Electronics Co.Ltd
- Authors:
Mark Yao <yzq@rock-chips.com>
- base on exynos_drm.h
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; either version 2 of the License, or (at your
- option) any later version.
- */
+#ifndef _UAPI_ROCKCHIP_DRM_H +#define _UAPI_ROCKCHIP_DRM_H
+#include <drm/drm.h>
+/**
- User-desired buffer creation information structure.
- @size: user-desired memory allocation size.
- @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_rockchip_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_rockchip_gem_map_off {
uint32_t handle;uint32_t pad;uint64_t offset;+};
+/**
- A structure for mapping buffer.
- @handle: a handle to gem object created.
- @pad: just padding to be 64-bit aligned.
- @size: memory size to be mapped.
- @mapped: having user virtual address mmaped.
- this variable would be filled by rockchip gem module
of kernel side with user virtual address which is allocated
by do_mmap().- */
+struct drm_rockchip_gem_mmap {
uint32_t handle;uint32_t pad;uint64_t size;uint64_t mapped;+};
Could we do without the mmap ioctl? It has been a source of problems in other drivers, and the ioctl to get mmap offset, plus normal mmap() on drm device file should be sufficient
BR, -R
+/**
- A structure to gem information.
- @handle: a handle to gem object created.
- @flags: flag value including memory type and cache attribute and
this value would be set by driver.
- @size: size to memory region allocated by gem and this size would
be set by driver.- */
+struct drm_rockchip_gem_info {
uint32_t handle;uint32_t flags;uint64_t size;+};
+#define DRM_ROCKCHIP_GEM_CREATE 0x00 +#define DRM_ROCKCHIP_GEM_MAP_OFFSET 0x01 +#define DRM_ROCKCHIP_GEM_MMAP 0x02 +#define DRM_ROCKCHIP_GEM_GET 0x04
+#define DRM_IOCTL_ROCKCHIP_GEM_CREATE DRM_IOWR(DRM_COMMAND_BASE + \
DRM_ROCKCHIP_GEM_CREATE, struct drm_rockchip_gem_create)+#define DRM_IOCTL_ROCKCHIP_GEM_MAP_OFFSET DRM_IOWR(DRM_COMMAND_BASE + \
DRM_ROCKCHIP_GEM_MAP_OFFSET, struct drm_rockchip_gem_map_off)+#define DRM_IOCTL_ROCKCHIP_GEM_MMAP DRM_IOWR(DRM_COMMAND_BASE + \
DRM_ROCKCHIP_GEM_MMAP, struct drm_rockchip_gem_mmap)+#define DRM_IOCTL_ROCKCHIP_GEM_GET DRM_IOWR(DRM_COMMAND_BASE + \
DRM_ROCKCHIP_GEM_GET, struct drm_rockchip_gem_info)+#endif /* _UAPI_ROCKCHIP_DRM_H */