ce1b1b66cd
found RING0 test fail after S3 resume regression, which is introduced by 1cfd8e237f0318e330190ac21d63c58ae6a1f66c Because after suspend VRAM will be cleared, so driver must unpin the GART table(resident in VRAM) during suspend so it can be evicted to system ram and must correspondingly pin it during resume so the GART table could be restored to VRAM. Signed-off-by: Monk Liu <Monk.Liu@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
75 lines
2.6 KiB
C
75 lines
2.6 KiB
C
/*
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* Copyright 2017 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_GART_H__
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#define __AMDGPU_GART_H__
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#include <linux/types.h>
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/*
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* GART structures, functions & helpers
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*/
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struct amdgpu_device;
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struct amdgpu_bo;
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struct amdgpu_gart_funcs;
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#define AMDGPU_GPU_PAGE_SIZE 4096
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#define AMDGPU_GPU_PAGE_MASK (AMDGPU_GPU_PAGE_SIZE - 1)
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#define AMDGPU_GPU_PAGE_SHIFT 12
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#define AMDGPU_GPU_PAGE_ALIGN(a) (((a) + AMDGPU_GPU_PAGE_MASK) & ~AMDGPU_GPU_PAGE_MASK)
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struct amdgpu_gart {
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u64 table_addr;
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struct amdgpu_bo *robj;
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void *ptr;
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unsigned num_gpu_pages;
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unsigned num_cpu_pages;
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unsigned table_size;
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#ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS
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struct page **pages;
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#endif
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bool ready;
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/* Asic default pte flags */
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uint64_t gart_pte_flags;
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const struct amdgpu_gart_funcs *gart_funcs;
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};
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int amdgpu_gart_table_vram_alloc(struct amdgpu_device *adev);
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void amdgpu_gart_table_vram_free(struct amdgpu_device *adev);
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int amdgpu_gart_table_vram_pin(struct amdgpu_device *adev);
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void amdgpu_gart_table_vram_unpin(struct amdgpu_device *adev);
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int amdgpu_gart_init(struct amdgpu_device *adev);
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void amdgpu_gart_fini(struct amdgpu_device *adev);
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int amdgpu_gart_unbind(struct amdgpu_device *adev, uint64_t offset,
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int pages);
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int amdgpu_gart_map(struct amdgpu_device *adev, uint64_t offset,
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int pages, dma_addr_t *dma_addr, uint64_t flags,
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void *dst);
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int amdgpu_gart_bind(struct amdgpu_device *adev, uint64_t offset,
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int pages, struct page **pagelist,
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dma_addr_t *dma_addr, uint64_t flags);
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#endif
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