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/*
* Copyright 2017 Advanced Micro Devices, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
*/
#ifndef __AMDGPU_GART_H__
#define __AMDGPU_GART_H__
#include <linux/types.h>
/*
* GART structures, functions & helpers
*/
struct amdgpu_device;
struct amdgpu_bo;
#define AMDGPU_GPU_PAGE_SIZE 4096
#define AMDGPU_GPU_PAGE_MASK (AMDGPU_GPU_PAGE_SIZE - 1)
#define AMDGPU_GPU_PAGE_SHIFT 12
#define AMDGPU_GPU_PAGE_ALIGN(a) (((a) + AMDGPU_GPU_PAGE_MASK) & ~AMDGPU_GPU_PAGE_MASK)
#define AMDGPU_GPU_PAGES_IN_CPU_PAGE (PAGE_SIZE / AMDGPU_GPU_PAGE_SIZE)
struct amdgpu_gart {
struct amdgpu_bo *bo;
/* CPU kmapped address of gart table */
void *ptr;
unsigned num_gpu_pages;
unsigned num_cpu_pages;
unsigned table_size;
#ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS
struct page **pages;
#endif
bool ready;
/* Asic default pte flags */
uint64_t gart_pte_flags;
};
int amdgpu_gart_table_vram_alloc(struct amdgpu_device *adev);
void amdgpu_gart_table_vram_free(struct amdgpu_device *adev);
int amdgpu_gart_table_vram_pin(struct amdgpu_device *adev);
void amdgpu_gart_table_vram_unpin(struct amdgpu_device *adev);
int amdgpu_gart_init(struct amdgpu_device *adev);
void amdgpu_gart_fini(struct amdgpu_device *adev);
int amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset,
int pages);
int amdgpu_gart_map(struct amdgpu_device *adev, uint64_t offset,
int pages, dma_addr_t *dma_addr, uint64_t flags,
void *dst);
int amdgpu_gart_bind(struct amdgpu_device *adev, uint64_t offset,
int pages, struct page **pagelist,
dma_addr_t *dma_addr, uint64_t flags);
#endif
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