diff options
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.h')
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.h new file mode 100644 index 0000000000..0e04e42cf8 --- /dev/null +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.h @@ -0,0 +1,62 @@ +/* SPDX-License-Identifier: MIT + * Copyright 2021 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. + * + */ + +#ifndef __AMDGPU_VRAM_MGR_H__ +#define __AMDGPU_VRAM_MGR_H__ + +#include <drm/drm_buddy.h> + +struct amdgpu_vram_mgr { + struct ttm_resource_manager manager; + struct drm_buddy mm; + /* protects access to buffer objects */ + struct mutex lock; + struct list_head reservations_pending; + struct list_head reserved_pages; + atomic64_t vis_usage; + u64 default_page_size; +}; + +struct amdgpu_vram_mgr_resource { + struct ttm_resource base; + struct list_head blocks; + unsigned long flags; +}; + +static inline u64 amdgpu_vram_mgr_block_start(struct drm_buddy_block *block) +{ + return drm_buddy_block_offset(block); +} + +static inline u64 amdgpu_vram_mgr_block_size(struct drm_buddy_block *block) +{ + return (u64)PAGE_SIZE << drm_buddy_block_order(block); +} + +static inline struct amdgpu_vram_mgr_resource * +to_amdgpu_vram_mgr_resource(struct ttm_resource *res) +{ + return container_of(res, struct amdgpu_vram_mgr_resource, base); +} + +#endif |