109 lines
3.4 KiB
C
109 lines
3.4 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
|
||
|
|
/* exynos_drm_gem.h
|
||
|
|
*
|
||
|
|
* Copyright (c) 2011 Samsung Electronics Co., Ltd.
|
||
|
|
* Authoer: Inki Dae <inki.dae@samsung.com>
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef _EXYNOS_DRM_GEM_H_
|
||
|
|
#define _EXYNOS_DRM_GEM_H_
|
||
|
|
|
||
|
|
#include <drm/drm_gem.h>
|
||
|
|
#include <linux/mm_types.h>
|
||
|
|
|
||
|
|
#define to_exynos_gem(x) container_of(x, struct exynos_drm_gem, base)
|
||
|
|
|
||
|
|
#define IS_NONCONTIG_BUFFER(f) (f & EXYNOS_BO_NONCONTIG)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* exynos drm buffer structure.
|
||
|
|
*
|
||
|
|
* @base: a gem object.
|
||
|
|
* - a new handle to this gem object would be created
|
||
|
|
* by drm_gem_handle_create().
|
||
|
|
* @flags: indicate memory type to allocated buffer and cache attruibute.
|
||
|
|
* @size: size requested from user, in bytes and this size is aligned
|
||
|
|
* in page unit.
|
||
|
|
* @cookie: cookie returned by dma_alloc_attrs
|
||
|
|
* @kvaddr: kernel virtual address to allocated memory region (for fbdev)
|
||
|
|
* @dma_addr: bus address(accessed by dma) to allocated memory region.
|
||
|
|
* - this address could be physical address without IOMMU and
|
||
|
|
* device address with IOMMU.
|
||
|
|
* @dma_attrs: attrs passed dma mapping framework
|
||
|
|
* @sgt: Imported sg_table.
|
||
|
|
*
|
||
|
|
* P.S. this object would be transferred to user as kms_bo.handle so
|
||
|
|
* user can access the buffer through kms_bo.handle.
|
||
|
|
*/
|
||
|
|
struct exynos_drm_gem {
|
||
|
|
struct drm_gem_object base;
|
||
|
|
unsigned int flags;
|
||
|
|
unsigned long size;
|
||
|
|
void *cookie;
|
||
|
|
void *kvaddr;
|
||
|
|
dma_addr_t dma_addr;
|
||
|
|
unsigned long dma_attrs;
|
||
|
|
struct sg_table *sgt;
|
||
|
|
};
|
||
|
|
|
||
|
|
/* destroy a buffer with gem object */
|
||
|
|
void exynos_drm_gem_destroy(struct exynos_drm_gem *exynos_gem);
|
||
|
|
|
||
|
|
/* create a new buffer with gem object */
|
||
|
|
struct exynos_drm_gem *exynos_drm_gem_create(struct drm_device *dev,
|
||
|
|
unsigned int flags,
|
||
|
|
unsigned long size,
|
||
|
|
bool kvmap);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* request gem object creation and buffer allocation as the size
|
||
|
|
* that it is calculated with framebuffer information such as width,
|
||
|
|
* height and bpp.
|
||
|
|
*/
|
||
|
|
int exynos_drm_gem_create_ioctl(struct drm_device *dev, void *data,
|
||
|
|
struct drm_file *file_priv);
|
||
|
|
|
||
|
|
/* get fake-offset of gem object that can be used with mmap. */
|
||
|
|
int exynos_drm_gem_map_ioctl(struct drm_device *dev, void *data,
|
||
|
|
struct drm_file *file_priv);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* get exynos drm object from gem handle, this function could be used for
|
||
|
|
* other drivers such as 2d/3d acceleration drivers.
|
||
|
|
* with this function call, gem object reference count would be increased.
|
||
|
|
*/
|
||
|
|
struct exynos_drm_gem *exynos_drm_gem_get(struct drm_file *filp,
|
||
|
|
unsigned int gem_handle);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* put exynos drm object acquired from exynos_drm_gem_get(),
|
||
|
|
* gem object reference count would be decreased.
|
||
|
|
*/
|
||
|
|
static inline void exynos_drm_gem_put(struct exynos_drm_gem *exynos_gem)
|
||
|
|
{
|
||
|
|
drm_gem_object_put(&exynos_gem->base);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* get buffer information to memory region allocated by gem. */
|
||
|
|
int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data,
|
||
|
|
struct drm_file *file_priv);
|
||
|
|
|
||
|
|
/* free gem object. */
|
||
|
|
void exynos_drm_gem_free_object(struct drm_gem_object *obj);
|
||
|
|
|
||
|
|
/* create memory region for drm framebuffer. */
|
||
|
|
int exynos_drm_gem_dumb_create(struct drm_file *file_priv,
|
||
|
|
struct drm_device *dev,
|
||
|
|
struct drm_mode_create_dumb *args);
|
||
|
|
|
||
|
|
/* low-level interface prime helpers */
|
||
|
|
struct drm_gem_object *exynos_drm_gem_prime_import(struct drm_device *dev,
|
||
|
|
struct dma_buf *dma_buf);
|
||
|
|
struct sg_table *exynos_drm_gem_prime_get_sg_table(struct drm_gem_object *obj);
|
||
|
|
struct drm_gem_object *
|
||
|
|
exynos_drm_gem_prime_import_sg_table(struct drm_device *dev,
|
||
|
|
struct dma_buf_attachment *attach,
|
||
|
|
struct sg_table *sgt);
|
||
|
|
|
||
|
|
#endif
|