| 1 | |
| 2 | * Copyright 2017 Advanced Micro Devices, Inc.
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| 3 | *
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| 4 | * Permission is hereby granted, free of charge, to any person obtaining a
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| 5 | * copy of this software and associated documentation files (the "Software"),
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| 6 | * to deal in the Software without restriction, including without limitation
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| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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| 8 | * and/or sell copies of the Software, and to permit persons to whom the
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| 9 | * Software is furnished to do so, subject to the following conditions:
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| 10 | *
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| 11 | * The above copyright notice and this permission notice shall be included in
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| 12 | * all copies or substantial portions of the Software.
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| 13 | *
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| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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| 17 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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| 18 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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| 19 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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| 20 | * OTHER DEALINGS IN THE SOFTWARE.
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| 21 | *
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| 22 |
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| 23 |
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| 24 | #ifndef __AMDGPU_GART_H__
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| 25 | #define __AMDGPU_GART_H__
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| 26 |
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| 27 | #include <linux/types.h>
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| 28 |
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| 29 | |
| 30 | * GART structures, functions & helpers
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| 31 |
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| 32 | struct amdgpu_device;
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| 33 | struct amdgpu_bo;
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| 34 |
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| 35 | #define AMDGPU_GPU_PAGE_SIZE 4096
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| 36 | #define AMDGPU_GPU_PAGE_MASK (AMDGPU_GPU_PAGE_SIZE - 1)
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| 37 | #define AMDGPU_GPU_PAGE_SHIFT 12
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| 38 | #define AMDGPU_GPU_PAGE_ALIGN(a) (((a) + AMDGPU_GPU_PAGE_MASK) & ~AMDGPU_GPU_PAGE_MASK)
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| 39 |
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| 40 | #define AMDGPU_GPU_PAGES_IN_CPU_PAGE (PAGE_SIZE / AMDGPU_GPU_PAGE_SIZE)
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| 41 |
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| 42 | struct amdgpu_gart {
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| 43 | struct amdgpu_bo *bo;
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| 44 |
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| 45 | void *ptr;
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| 46 | unsigned num_gpu_pages;
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| 47 | unsigned num_cpu_pages;
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| 48 | unsigned table_size;
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| 49 |
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| 50 |
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| 51 | uint64_t gart_pte_flags;
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| 52 | };
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| 53 |
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| 54 | int amdgpu_gart_table_ram_alloc(struct amdgpu_device *adev);
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| 55 | void amdgpu_gart_table_ram_free(struct amdgpu_device *adev);
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| 56 | int amdgpu_gart_table_vram_alloc(struct amdgpu_device *adev);
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| 57 | void amdgpu_gart_table_vram_free(struct amdgpu_device *adev);
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| 58 | int amdgpu_gart_init(struct amdgpu_device *adev);
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| 59 | void amdgpu_gart_dummy_page_fini(struct amdgpu_device *adev);
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| 60 | void amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset,
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| 61 | int pages);
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| 62 | void amdgpu_gart_map(struct amdgpu_device *adev, uint64_t offset,
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| 63 | int pages, dma_addr_t *dma_addr, uint64_t flags,
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| 64 | void *dst);
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| 65 | void amdgpu_gart_map_gfx9_mqd(struct amdgpu_device *adev, uint64_t offset,
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| 66 | int pages, dma_addr_t *dma_addr, uint64_t flags);
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| 67 | void amdgpu_gart_bind(struct amdgpu_device *adev, uint64_t offset,
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| 68 | int pages, dma_addr_t *dma_addr, uint64_t flags);
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| 69 | void amdgpu_gart_map_vram_range(struct amdgpu_device *adev, uint64_t pa,
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| 70 | uint64_t start_page, uint64_t num_pages,
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| 71 | uint64_t flags, void *dst);
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| 72 | void amdgpu_gart_invalidate_tlb(struct amdgpu_device *adev);
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| 73 | #endif
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