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/*
* Copyright (c) 2017, 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 __COMMON_LINUX_DMABUF_H__
#define __COMMON_LINUX_DMABUF_H__
#include <nvgpu/comptags.h>
#include <nvgpu/list.h>
#include <nvgpu/lock.h>
#include <nvgpu/gmmu.h>
struct sg_table;
struct dma_buf;
struct dma_buf_attachment;
struct device;
struct gk20a;
struct gk20a_buffer_state;
struct gk20a_dmabuf_priv {
struct nvgpu_mutex lock;
struct gk20a *g;
struct gk20a_comptag_allocator *comptag_allocator;
struct gk20a_comptags comptags;
struct dma_buf_attachment *attach;
struct sg_table *sgt;
int pin_count;
struct nvgpu_list_node states;
u64 buffer_id;
};
/*
* These are implemented in common/linux/comptags.c - these are dmabuf related
* functions though so they are defined here. They cannot be defined in
* <nvgpu/comptags.h> since that file must be OS agnostic.
*/
int gk20a_alloc_comptags(struct gk20a *g,
struct device *dev,
struct dma_buf *dmabuf,
struct gk20a_comptag_allocator *allocator,
u32 lines);
void gk20a_get_comptags(struct device *dev, struct dma_buf *dmabuf,
struct gk20a_comptags *comptags);
struct sg_table *gk20a_mm_pin(struct device *dev, struct dma_buf *dmabuf);
void gk20a_mm_unpin(struct device *dev, struct dma_buf *dmabuf,
struct sg_table *sgt);
int gk20a_dmabuf_alloc_drvdata(struct dma_buf *dmabuf, struct device *dev);
int gk20a_dmabuf_get_state(struct dma_buf *dmabuf, struct gk20a *g,
u64 offset, struct gk20a_buffer_state **state);
#endif
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