| 1 | /* SPDX-License-Identifier: MIT |
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| 2 | * Copyright 2021 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_VRAM_MGR_H__ |
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| 25 | #define __AMDGPU_VRAM_MGR_H__ |
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| 26 | |
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| 27 | #include <drm/drm_buddy.h> |
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| 28 | |
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| 29 | struct amdgpu_vram_mgr { |
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| 30 | struct ttm_resource_manager manager; |
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| 31 | struct drm_buddy mm; |
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| 32 | /* protects access to buffer objects */ |
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| 33 | struct mutex lock; |
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| 34 | struct list_head reservations_pending; |
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| 35 | struct list_head reserved_pages; |
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| 36 | atomic64_t vis_usage; |
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| 37 | u64 default_page_size; |
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| 38 | }; |
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| 39 | |
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| 40 | struct amdgpu_vram_mgr_resource { |
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| 41 | struct ttm_resource base; |
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| 42 | struct list_head blocks; |
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| 43 | unsigned long flags; |
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| 44 | }; |
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| 45 | |
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| 46 | static inline u64 amdgpu_vram_mgr_block_start(struct drm_buddy_block *block) |
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| 47 | { |
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| 48 | return drm_buddy_block_offset(block); |
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| 49 | } |
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| 50 | |
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| 51 | static inline u64 amdgpu_vram_mgr_block_size(struct drm_buddy_block *block) |
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| 52 | { |
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| 53 | return (u64)PAGE_SIZE << drm_buddy_block_order(block); |
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| 54 | } |
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| 55 | |
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| 56 | static inline struct amdgpu_vram_mgr_resource * |
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| 57 | to_amdgpu_vram_mgr_resource(struct ttm_resource *res) |
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| 58 | { |
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| 59 | return container_of(res, struct amdgpu_vram_mgr_resource, base); |
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| 60 | } |
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| 61 | |
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| 62 | #endif |
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| 63 | |
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