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1/*2 * Copyright 2017 Advanced Micro Devices, Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 */23 24#ifndef __AMDGPU_GART_H__25#define __AMDGPU_GART_H__26 27#include <linux/types.h>28 29/*30 * GART structures, functions & helpers31 */32struct amdgpu_device;33struct amdgpu_bo;34 35#define AMDGPU_GPU_PAGE_SIZE 409636#define AMDGPU_GPU_PAGE_MASK (AMDGPU_GPU_PAGE_SIZE - 1)37#define AMDGPU_GPU_PAGE_SHIFT 1238#define AMDGPU_GPU_PAGE_ALIGN(a) (((a) + AMDGPU_GPU_PAGE_MASK) & ~AMDGPU_GPU_PAGE_MASK)39 40#define AMDGPU_GPU_PAGES_IN_CPU_PAGE (PAGE_SIZE / AMDGPU_GPU_PAGE_SIZE)41 42struct amdgpu_gart {43 struct amdgpu_bo *bo;44 /* CPU kmapped address of gart table */45 void *ptr;46 unsigned num_gpu_pages;47 unsigned num_cpu_pages;48 unsigned table_size;49 50 /* Asic default pte flags */51 uint64_t gart_pte_flags;52};53 54int amdgpu_gart_table_ram_alloc(struct amdgpu_device *adev);55void amdgpu_gart_table_ram_free(struct amdgpu_device *adev);56int amdgpu_gart_table_vram_alloc(struct amdgpu_device *adev);57void amdgpu_gart_table_vram_free(struct amdgpu_device *adev);58int amdgpu_gart_init(struct amdgpu_device *adev);59void amdgpu_gart_dummy_page_fini(struct amdgpu_device *adev);60void amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset,61 int pages);62void amdgpu_gart_map(struct amdgpu_device *adev, uint64_t offset,63 int pages, dma_addr_t *dma_addr, uint64_t flags,64 void *dst);65void amdgpu_gart_bind(struct amdgpu_device *adev, uint64_t offset,66 int pages, dma_addr_t *dma_addr, uint64_t flags);67void amdgpu_gart_invalidate_tlb(struct amdgpu_device *adev);68#endif69