2 * Copyright 2017 Advanced Micro Devices, Inc.
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9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
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24 #ifndef __AMDGPU_GART_H__
25 #define __AMDGPU_GART_H__
27 #include <linux/types.h>
30 * GART structures, functions & helpers
34 struct amdgpu_gart_funcs;
36 #define AMDGPU_GPU_PAGE_SIZE 4096
37 #define AMDGPU_GPU_PAGE_MASK (AMDGPU_GPU_PAGE_SIZE - 1)
38 #define AMDGPU_GPU_PAGE_SHIFT 12
39 #define AMDGPU_GPU_PAGE_ALIGN(a) (((a) + AMDGPU_GPU_PAGE_MASK) & ~AMDGPU_GPU_PAGE_MASK)
43 struct amdgpu_bo *robj;
45 unsigned num_gpu_pages;
46 unsigned num_cpu_pages;
48 #ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS
53 /* Asic default pte flags */
54 uint64_t gart_pte_flags;
56 const struct amdgpu_gart_funcs *gart_funcs;
59 int amdgpu_gart_table_vram_alloc(struct amdgpu_device *adev);
60 void amdgpu_gart_table_vram_free(struct amdgpu_device *adev);
61 int amdgpu_gart_table_vram_pin(struct amdgpu_device *adev);
62 void amdgpu_gart_table_vram_unpin(struct amdgpu_device *adev);
63 int amdgpu_gart_init(struct amdgpu_device *adev);
64 void amdgpu_gart_fini(struct amdgpu_device *adev);
65 int amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset,
67 int amdgpu_gart_map(struct amdgpu_device *adev, uint64_t offset,
68 int pages, dma_addr_t *dma_addr, uint64_t flags,
70 int amdgpu_gart_bind(struct amdgpu_device *adev, uint64_t offset,
71 int pages, struct page **pagelist,
72 dma_addr_t *dma_addr, uint64_t flags);