// SPDX-License-Identifier: GPL-2.0 OR MIT /* * Copyright 2020 Advanced Micro Devices, Inc. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Authors: Christian König */ #ifndef __AMDGPU_RES_CURSOR_H__ #define __AMDGPU_RES_CURSOR_H__ #include <drm/drm_mm.h> #include <drm/ttm/ttm_resource.h> #include <drm/ttm/ttm_range_manager.h> #include "amdgpu_vram_mgr.h" /* state back for walking over vram_mgr and gtt_mgr allocations */ struct amdgpu_res_cursor { … }; /** * amdgpu_res_first - initialize a amdgpu_res_cursor * * @res: TTM resource object to walk * @start: Start of the range * @size: Size of the range * @cur: cursor object to initialize * * Start walking over the range of allocations between @start and @size. */ static inline void amdgpu_res_first(struct ttm_resource *res, uint64_t start, uint64_t size, struct amdgpu_res_cursor *cur) { … } /** * amdgpu_res_next - advance the cursor * * @cur: the cursor to advance * @size: number of bytes to move forward * * Move the cursor @size bytes forwrad, walking to the next node if necessary. */ static inline void amdgpu_res_next(struct amdgpu_res_cursor *cur, uint64_t size) { … } /** * amdgpu_res_cleared - check if blocks are cleared * * @cur: the cursor to extract the block * * Check if the @cur block is cleared */ static inline bool amdgpu_res_cleared(struct amdgpu_res_cursor *cur) { … } #endif
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