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1/* SPDX-License-Identifier: MIT2 * Copyright 2021 Advanced Micro Devices, Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 */23 24#ifndef __AMDGPU_VRAM_MGR_H__25#define __AMDGPU_VRAM_MGR_H__26 27#include <drm/drm_buddy.h>28 29struct amdgpu_vram_mgr {30 struct ttm_resource_manager manager;31 struct drm_buddy mm;32 /* protects access to buffer objects */33 struct mutex lock;34 struct list_head reservations_pending;35 struct list_head reserved_pages;36 atomic64_t vis_usage;37 u64 default_page_size;38};39 40struct amdgpu_vram_mgr_resource {41 struct ttm_resource base;42 struct list_head blocks;43 unsigned long flags;44};45 46static inline u64 amdgpu_vram_mgr_block_start(struct drm_buddy_block *block)47{48 return drm_buddy_block_offset(block);49}50 51static inline u64 amdgpu_vram_mgr_block_size(struct drm_buddy_block *block)52{53 return (u64)PAGE_SIZE << drm_buddy_block_order(block);54}55 56static inline bool amdgpu_vram_mgr_is_cleared(struct drm_buddy_block *block)57{58 return drm_buddy_block_is_clear(block);59}60 61static inline struct amdgpu_vram_mgr_resource *62to_amdgpu_vram_mgr_resource(struct ttm_resource *res)63{64 return container_of(res, struct amdgpu_vram_mgr_resource, base);65}66 67static inline void amdgpu_vram_mgr_set_cleared(struct ttm_resource *res)68{69 to_amdgpu_vram_mgr_resource(res)->flags |= DRM_BUDDY_CLEARED;70}71 72#endif73