1 /* $NetBSD: amdgpu_gart.h,v 1.4 2021/12/19 12:21:29 riastradh Exp $ */ 2 3 /* 4 * Copyright 2017 Advanced Micro Devices, Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 */ 25 26 #ifndef __AMDGPU_GART_H__ 27 #define __AMDGPU_GART_H__ 28 29 #include <linux/types.h> 30 31 /* 32 * GART structures, functions & helpers 33 */ 34 struct amdgpu_device; 35 struct amdgpu_bo; 36 37 #define AMDGPU_GPU_PAGE_SIZE 4096 38 #define AMDGPU_GPU_PAGE_MASK (AMDGPU_GPU_PAGE_SIZE - 1) 39 #define AMDGPU_GPU_PAGE_SHIFT 12 40 #define AMDGPU_GPU_PAGE_ALIGN(a) (((a) + AMDGPU_GPU_PAGE_MASK) & ~AMDGPU_GPU_PAGE_MASK) 41 42 #define AMDGPU_GPU_PAGES_IN_CPU_PAGE (PAGE_SIZE / AMDGPU_GPU_PAGE_SIZE) 43 44 struct amdgpu_gart { 45 #ifdef __NetBSD__ 46 bus_dma_segment_t ag_table_seg; 47 bus_dmamap_t ag_table_map; 48 #endif 49 struct amdgpu_bo *bo; 50 /* CPU kmapped address of gart table */ 51 void *ptr; 52 unsigned num_gpu_pages; 53 unsigned num_cpu_pages; 54 unsigned table_size; 55 #ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS 56 struct page **pages; 57 #endif 58 bool ready; 59 60 /* Asic default pte flags */ 61 uint64_t gart_pte_flags; 62 }; 63 64 int amdgpu_gart_table_vram_alloc(struct amdgpu_device *adev); 65 void amdgpu_gart_table_vram_free(struct amdgpu_device *adev); 66 int amdgpu_gart_table_vram_pin(struct amdgpu_device *adev); 67 void amdgpu_gart_table_vram_unpin(struct amdgpu_device *adev); 68 int amdgpu_gart_init(struct amdgpu_device *adev); 69 void amdgpu_gart_fini(struct amdgpu_device *adev); 70 #ifdef __NetBSD__ 71 int amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t gpu_start, 72 unsigned npages); 73 int amdgpu_gart_map(struct amdgpu_device *adev, uint64_t gpu_start, 74 unsigned npages, bus_size_t map_start, bus_dmamap_t map, uint32_t flags, 75 void *dst); 76 int amdgpu_gart_bind(struct amdgpu_device *adev, uint64_t gpu_start, 77 unsigned npages, struct page **pagelist, bus_dmamap_t dmamap, 78 uint32_t flags); 79 #else 80 int amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset, 81 int pages); 82 int amdgpu_gart_map(struct amdgpu_device *adev, uint64_t offset, 83 int pages, dma_addr_t *dma_addr, uint64_t flags, 84 void *dst); 85 int amdgpu_gart_bind(struct amdgpu_device *adev, uint64_t offset, 86 int pages, struct page **pagelist, 87 dma_addr_t *dma_addr, uint64_t flags); 88 #endif 89 90 #endif 91