a68c7eaa7a
Add clear page support in vram memory region.
v1(Christian):
- Dont handle clear page as TTM flag since when moving the BO back
in from GTT again we don't need that.
- Make a specialized version of amdgpu_fill_buffer() which only
clears the VRAM areas which are not already cleared
- Drop the TTM_PL_FLAG_WIPE_ON_RELEASE check in
amdgpu_object.c
v2:
- Modify the function name amdgpu_ttm_* (Alex)
- Drop the delayed parameter (Christian)
- handle amdgpu_res_cleared(&cursor) just above the size
calculation (Christian)
- Use AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE for clearing the buffers
in the free path to properly wait for fences etc.. (Christian)
v3(Christian):
- Remove buffer clear code in VRAM manager instead change the
AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE handling to set
the DRM_BUDDY_CLEARED flag.
- Remove ! from amdgpu_res_cleared(&cursor) check.
v4(Christian):
- vres flag setting move to vram manager file
- use dma_fence_get_stub in amdgpu_ttm_clear_buffer function
- make fence a mandatory parameter and drop the if and the get/put dance
Signed-off-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Suggested-by: Christian König <christian.koenig@amd.com>
Acked-by: Felix Kuehling <felix.kuehling@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419063538.11957-2-Arunpravin.PaneerSelvam@amd.com
Signed-off-by: Christian König <christian.koenig@amd.com>
72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
/* SPDX-License-Identifier: MIT
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* Copyright 2021 Advanced Micro Devices, Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#ifndef __AMDGPU_VRAM_MGR_H__
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#define __AMDGPU_VRAM_MGR_H__
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#include <drm/drm_buddy.h>
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struct amdgpu_vram_mgr {
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struct ttm_resource_manager manager;
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struct drm_buddy mm;
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/* protects access to buffer objects */
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struct mutex lock;
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struct list_head reservations_pending;
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struct list_head reserved_pages;
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atomic64_t vis_usage;
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u64 default_page_size;
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};
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struct amdgpu_vram_mgr_resource {
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struct ttm_resource base;
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struct list_head blocks;
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unsigned long flags;
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};
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static inline u64 amdgpu_vram_mgr_block_start(struct drm_buddy_block *block)
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{
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return drm_buddy_block_offset(block);
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}
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static inline u64 amdgpu_vram_mgr_block_size(struct drm_buddy_block *block)
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{
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return (u64)PAGE_SIZE << drm_buddy_block_order(block);
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}
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static inline bool amdgpu_vram_mgr_is_cleared(struct drm_buddy_block *block)
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{
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return drm_buddy_block_is_clear(block);
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}
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static inline struct amdgpu_vram_mgr_resource *
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to_amdgpu_vram_mgr_resource(struct ttm_resource *res)
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{
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return container_of(res, struct amdgpu_vram_mgr_resource, base);
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}
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static inline void amdgpu_vram_mgr_set_cleared(struct ttm_resource *res)
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{
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to_amdgpu_vram_mgr_resource(res)->flags |= DRM_BUDDY_CLEARED;
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}
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#endif
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