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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2020 VeriSilicon Holdings Co., Ltd.
*/
#ifndef __VS_GEM_H__
#define __VS_GEM_H__
#include <linux/dma-buf.h>
#include <drm/drm_gem.h>
#include "vs_drv.h"
#if KERNEL_VERSION(5, 5, 0) <= LINUX_VERSION_CODE
#include <drm/drm_prime.h>
#endif
/*
*
* @base: drm gem object.
* @size: size requested from user
* @cookie: cookie returned by dma_alloc_attrs
* - not kernel virtual address with DMA_ATTR_NO_KERNEL_MAPPING
* @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: attribute for DMA API
* @get_pages: flag for manually applying for non-contiguous memory.
* @pages: Array of backing pages.
* @sgt: Imported sg_table.
*
*/
struct vs_gem_object {
struct drm_gem_object base;
size_t size;
void *cookie;
dma_addr_t dma_addr;
u32 iova;
unsigned long dma_attrs;
bool get_pages;
struct page **pages;
struct sg_table *sgt;
};
static inline
struct vs_gem_object *to_vs_gem_object(struct drm_gem_object *obj)
{
return container_of(obj, struct vs_gem_object, base);
}
struct vs_gem_object *vs_gem_create_object(struct drm_device *dev,
size_t size);
int vs_gem_prime_vmap(struct drm_gem_object *obj, struct dma_buf_map *map);
void vs_gem_prime_vunmap(struct drm_gem_object *obj, struct dma_buf_map *map);
int vs_gem_prime_mmap(struct drm_gem_object *obj,
struct vm_area_struct *vma);
int vs_gem_dumb_create(struct drm_file *file_priv,
struct drm_device *drm,
struct drm_mode_create_dumb *args);
int vs_gem_mmap(struct file *filp, struct vm_area_struct *vma);
struct sg_table *vs_gem_prime_get_sg_table(struct drm_gem_object *obj);
struct drm_gem_object *vs_gem_prime_import(struct drm_device *dev,
struct dma_buf *dma_buf);
struct drm_gem_object *
vs_gem_prime_import_sg_table(struct drm_device *dev,
struct dma_buf_attachment *attach,
struct sg_table *sgt);
#endif /* __VS_GEM_H__ */
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