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/*
* 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 __COMMON_LINUX_VM_PRIV_H__
#define __COMMON_LINUX_VM_PRIV_H__
#include <nvgpu/types.h>
#include <asm/cacheflush.h>
/*
* Couple of places explicitly flush caches still. Any DMA buffer we allocate
* from within the GPU is writecombine and as a result does not need this but
* there seem to be exceptions.
*/
#ifdef CONFIG_ARM64
#define outer_flush_range(a, b)
#define __cpuc_flush_dcache_area __flush_dcache_area
#endif
struct sg_table;
struct dma_buf;
struct device;
struct vm_gk20a;
struct vm_gk20a_mapping_batch;
struct nvgpu_vm_area;
struct nvgpu_os_buffer {
struct dma_buf *dmabuf;
struct dma_buf_attachment *attachment;
struct device *dev;
};
struct nvgpu_mapped_buf_priv {
struct dma_buf *dmabuf;
struct dma_buf_attachment *attachment;
struct sg_table *sgt;
// For fast reverse lookup (FD -> mapped_buf)
struct list_head nvmap_priv_entry;
// To allow waiting on swap I/O completion
struct completion swap_io_done;
// Sector assignment for swapped-out data
sector_t swap_sector;
};
/* NVGPU_AS_MAP_BUFFER_FLAGS_DIRECT_KIND_CTRL must be set */
int nvgpu_vm_map_linux(struct vm_gk20a *vm,
struct dma_buf *dmabuf,
u64 map_addr,
u32 flags,
u32 page_size,
s16 compr_kind,
s16 incompr_kind,
int rw_flag,
u64 buffer_offset,
u64 mapping_size,
struct vm_gk20a_mapping_batch *mapping_batch,
u64 *gpu_va);
/*
* Notes:
* - Batch may be NULL if map op is not part of a batch.
* - NVGPU_AS_MAP_BUFFER_FLAGS_DIRECT_KIND_CTRL must be set
*/
int nvgpu_vm_map_buffer(struct vm_gk20a *vm,
int dmabuf_fd,
u64 *map_addr,
u32 flags, /* NVGPU_AS_MAP_BUFFER_FLAGS_ */
u32 page_size,
s16 compr_kind,
s16 incompr_kind,
u64 buffer_offset,
u64 mapping_size,
struct vm_gk20a_mapping_batch *batch);
/* find buffer corresponding to va */
int nvgpu_vm_find_buf(struct vm_gk20a *vm, u64 gpu_va,
struct dma_buf **dmabuf,
u64 *offset);
enum nvgpu_aperture gk20a_dmabuf_aperture(struct gk20a *g,
struct dma_buf *dmabuf);
#endif
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