/*
* Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __NVGPU_LINUX_DMABUF_VIDMEM_H__
#define __NVGPU_LINUX_DMABUF_VIDMEM_H__
#include <nvgpu/types.h>
struct dma_buf;
struct gk20a;
struct scatterlist;
#ifdef CONFIG_GK20A_VIDMEM
struct gk20a *nvgpu_vidmem_buf_owner(struct dma_buf *dmabuf);
int nvgpu_vidmem_export_linux(struct gk20a *g, size_t bytes);
void nvgpu_vidmem_set_page_alloc(struct scatterlist *sgl, u64 addr);
struct nvgpu_page_alloc *nvgpu_vidmem_get_page_alloc(struct scatterlist *sgl);
int nvgpu_vidmem_buf_access_memory(struct gk20a *g, struct dma_buf *dmabuf,
void *buffer, u64 offset, u64 size, u32 cmd);
#else /* !CONFIG_GK20A_VIDMEM */
static inline struct gk20a *nvgpu_vidmem_buf_owner(struct dma_buf *dmabuf)
{
return NULL;
}
static inline int nvgpu_vidmem_export_linux(struct gk20a *g, size_t bytes)
{
return -ENOSYS;
}
static inline void nvgpu_vidmem_set_page_alloc(struct scatterlist *sgl,
u64 addr)
{
}
static inline struct nvgpu_page_alloc *nvgpu_vidmem_get_page_alloc(
struct scatterlist *sgl)
{
return NULL;
}
static inline int nvgpu_vidmem_buf_access_memory(struct gk20a *g,
struct dma_buf *dmabuf,
void *buffer, u64 offset,
u64 size, u32 cmd)
{
return -ENOSYS;
}
#endif
struct nvgpu_vidmem_linux {
struct dma_buf *dmabuf;
void *dmabuf_priv;
void (*dmabuf_priv_delete)(void *);
};
#endif
