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![Andres Rodriguez](/assets/img/avatar_default.png)
Introduce a flag to signal that access to a BO will be synchronized through an external mechanism. Currently all buffers shared between contexts are subject to implicit synchronization. However, this is only required for protocols that currently don't support an explicit synchronization mechanism (DRI2/3). This patch introduces the AMDGPU_GEM_CREATE_EXPLICIT_SYNC, so that users can specify when it is safe to disable implicit sync. v2: only disable explicit sync in amdgpu_cs_ioctl Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Andres Rodriguez <andresx7@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
299 lines
9.1 KiB
C
299 lines
9.1 KiB
C
/*
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* Copyright 2008 Advanced Micro Devices, Inc.
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* Copyright 2008 Red Hat Inc.
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* Copyright 2009 Jerome Glisse.
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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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* Authors: Dave Airlie
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* Alex Deucher
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* Jerome Glisse
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*/
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#ifndef __AMDGPU_OBJECT_H__
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#define __AMDGPU_OBJECT_H__
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#include <drm/amdgpu_drm.h>
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#include "amdgpu.h"
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#define AMDGPU_BO_INVALID_OFFSET LONG_MAX
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/* bo virtual addresses in a vm */
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struct amdgpu_bo_va_mapping {
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struct amdgpu_bo_va *bo_va;
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struct list_head list;
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struct rb_node rb;
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uint64_t start;
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uint64_t last;
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uint64_t __subtree_last;
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uint64_t offset;
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uint64_t flags;
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};
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/* User space allocated BO in a VM */
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struct amdgpu_bo_va {
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struct amdgpu_vm_bo_base base;
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/* protected by bo being reserved */
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unsigned ref_count;
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/* all other members protected by the VM PD being reserved */
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struct dma_fence *last_pt_update;
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/* mappings for this bo_va */
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struct list_head invalids;
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struct list_head valids;
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/* If the mappings are cleared or filled */
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bool cleared;
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};
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struct amdgpu_bo {
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/* Protected by tbo.reserved */
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u32 preferred_domains;
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u32 allowed_domains;
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struct ttm_place placements[AMDGPU_GEM_DOMAIN_MAX + 1];
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struct ttm_placement placement;
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struct ttm_buffer_object tbo;
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struct ttm_bo_kmap_obj kmap;
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u64 flags;
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unsigned pin_count;
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u64 tiling_flags;
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u64 metadata_flags;
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void *metadata;
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u32 metadata_size;
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unsigned prime_shared_count;
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/* list of all virtual address to which this bo is associated to */
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struct list_head va;
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/* Constant after initialization */
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struct drm_gem_object gem_base;
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struct amdgpu_bo *parent;
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struct amdgpu_bo *shadow;
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struct ttm_bo_kmap_obj dma_buf_vmap;
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struct amdgpu_mn *mn;
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union {
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struct list_head mn_list;
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struct list_head shadow_list;
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};
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};
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static inline struct amdgpu_bo *ttm_to_amdgpu_bo(struct ttm_buffer_object *tbo)
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{
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return container_of(tbo, struct amdgpu_bo, tbo);
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}
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/**
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* amdgpu_mem_type_to_domain - return domain corresponding to mem_type
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* @mem_type: ttm memory type
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*
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* Returns corresponding domain of the ttm mem_type
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*/
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static inline unsigned amdgpu_mem_type_to_domain(u32 mem_type)
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{
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switch (mem_type) {
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case TTM_PL_VRAM:
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return AMDGPU_GEM_DOMAIN_VRAM;
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case TTM_PL_TT:
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return AMDGPU_GEM_DOMAIN_GTT;
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case TTM_PL_SYSTEM:
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return AMDGPU_GEM_DOMAIN_CPU;
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case AMDGPU_PL_GDS:
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return AMDGPU_GEM_DOMAIN_GDS;
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case AMDGPU_PL_GWS:
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return AMDGPU_GEM_DOMAIN_GWS;
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case AMDGPU_PL_OA:
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return AMDGPU_GEM_DOMAIN_OA;
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default:
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break;
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}
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return 0;
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}
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/**
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* amdgpu_bo_reserve - reserve bo
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* @bo: bo structure
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* @no_intr: don't return -ERESTARTSYS on pending signal
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*
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* Returns:
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* -ERESTARTSYS: A wait for the buffer to become unreserved was interrupted by
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* a signal. Release all buffer reservations and return to user-space.
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*/
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static inline int amdgpu_bo_reserve(struct amdgpu_bo *bo, bool no_intr)
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{
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struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
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int r;
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r = ttm_bo_reserve(&bo->tbo, !no_intr, false, NULL);
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if (unlikely(r != 0)) {
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if (r != -ERESTARTSYS)
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dev_err(adev->dev, "%p reserve failed\n", bo);
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return r;
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}
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return 0;
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}
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static inline void amdgpu_bo_unreserve(struct amdgpu_bo *bo)
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{
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ttm_bo_unreserve(&bo->tbo);
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}
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static inline unsigned long amdgpu_bo_size(struct amdgpu_bo *bo)
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{
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return bo->tbo.num_pages << PAGE_SHIFT;
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}
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static inline unsigned amdgpu_bo_ngpu_pages(struct amdgpu_bo *bo)
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{
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return (bo->tbo.num_pages << PAGE_SHIFT) / AMDGPU_GPU_PAGE_SIZE;
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}
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static inline unsigned amdgpu_bo_gpu_page_alignment(struct amdgpu_bo *bo)
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{
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return (bo->tbo.mem.page_alignment << PAGE_SHIFT) / AMDGPU_GPU_PAGE_SIZE;
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}
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/**
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* amdgpu_bo_mmap_offset - return mmap offset of bo
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* @bo: amdgpu object for which we query the offset
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*
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* Returns mmap offset of the object.
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*/
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static inline u64 amdgpu_bo_mmap_offset(struct amdgpu_bo *bo)
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{
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return drm_vma_node_offset_addr(&bo->tbo.vma_node);
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}
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/**
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* amdgpu_bo_gpu_accessible - return whether the bo is currently in memory that
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* is accessible to the GPU.
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*/
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static inline bool amdgpu_bo_gpu_accessible(struct amdgpu_bo *bo)
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{
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switch (bo->tbo.mem.mem_type) {
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case TTM_PL_TT: return amdgpu_ttm_is_bound(bo->tbo.ttm);
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case TTM_PL_VRAM: return true;
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default: return false;
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}
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}
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/**
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* amdgpu_bo_explicit_sync - return whether the bo is explicitly synced
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*/
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static inline bool amdgpu_bo_explicit_sync(struct amdgpu_bo *bo)
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{
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return bo->flags & AMDGPU_GEM_CREATE_EXPLICIT_SYNC;
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}
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int amdgpu_bo_create(struct amdgpu_device *adev,
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unsigned long size, int byte_align,
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bool kernel, u32 domain, u64 flags,
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struct sg_table *sg,
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struct reservation_object *resv,
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uint64_t init_value,
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struct amdgpu_bo **bo_ptr);
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int amdgpu_bo_create_reserved(struct amdgpu_device *adev,
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unsigned long size, int align,
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u32 domain, struct amdgpu_bo **bo_ptr,
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u64 *gpu_addr, void **cpu_addr);
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int amdgpu_bo_create_kernel(struct amdgpu_device *adev,
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unsigned long size, int align,
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u32 domain, struct amdgpu_bo **bo_ptr,
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u64 *gpu_addr, void **cpu_addr);
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void amdgpu_bo_free_kernel(struct amdgpu_bo **bo, u64 *gpu_addr,
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void **cpu_addr);
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int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr);
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void *amdgpu_bo_kptr(struct amdgpu_bo *bo);
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void amdgpu_bo_kunmap(struct amdgpu_bo *bo);
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struct amdgpu_bo *amdgpu_bo_ref(struct amdgpu_bo *bo);
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void amdgpu_bo_unref(struct amdgpu_bo **bo);
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int amdgpu_bo_pin(struct amdgpu_bo *bo, u32 domain, u64 *gpu_addr);
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int amdgpu_bo_pin_restricted(struct amdgpu_bo *bo, u32 domain,
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u64 min_offset, u64 max_offset,
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u64 *gpu_addr);
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int amdgpu_bo_unpin(struct amdgpu_bo *bo);
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int amdgpu_bo_evict_vram(struct amdgpu_device *adev);
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int amdgpu_bo_init(struct amdgpu_device *adev);
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void amdgpu_bo_fini(struct amdgpu_device *adev);
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int amdgpu_bo_fbdev_mmap(struct amdgpu_bo *bo,
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struct vm_area_struct *vma);
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int amdgpu_bo_set_tiling_flags(struct amdgpu_bo *bo, u64 tiling_flags);
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void amdgpu_bo_get_tiling_flags(struct amdgpu_bo *bo, u64 *tiling_flags);
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int amdgpu_bo_set_metadata (struct amdgpu_bo *bo, void *metadata,
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uint32_t metadata_size, uint64_t flags);
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int amdgpu_bo_get_metadata(struct amdgpu_bo *bo, void *buffer,
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size_t buffer_size, uint32_t *metadata_size,
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uint64_t *flags);
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void amdgpu_bo_move_notify(struct ttm_buffer_object *bo,
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bool evict,
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struct ttm_mem_reg *new_mem);
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int amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo);
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void amdgpu_bo_fence(struct amdgpu_bo *bo, struct dma_fence *fence,
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bool shared);
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u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo);
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int amdgpu_bo_backup_to_shadow(struct amdgpu_device *adev,
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struct amdgpu_ring *ring,
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struct amdgpu_bo *bo,
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struct reservation_object *resv,
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struct dma_fence **fence, bool direct);
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int amdgpu_bo_validate(struct amdgpu_bo *bo);
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int amdgpu_bo_restore_from_shadow(struct amdgpu_device *adev,
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struct amdgpu_ring *ring,
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struct amdgpu_bo *bo,
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struct reservation_object *resv,
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struct dma_fence **fence,
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bool direct);
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/*
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* sub allocation
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*/
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static inline uint64_t amdgpu_sa_bo_gpu_addr(struct amdgpu_sa_bo *sa_bo)
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{
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return sa_bo->manager->gpu_addr + sa_bo->soffset;
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}
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static inline void * amdgpu_sa_bo_cpu_addr(struct amdgpu_sa_bo *sa_bo)
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{
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return sa_bo->manager->cpu_ptr + sa_bo->soffset;
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}
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int amdgpu_sa_bo_manager_init(struct amdgpu_device *adev,
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struct amdgpu_sa_manager *sa_manager,
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unsigned size, u32 align, u32 domain);
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void amdgpu_sa_bo_manager_fini(struct amdgpu_device *adev,
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struct amdgpu_sa_manager *sa_manager);
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int amdgpu_sa_bo_manager_start(struct amdgpu_device *adev,
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struct amdgpu_sa_manager *sa_manager);
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int amdgpu_sa_bo_manager_suspend(struct amdgpu_device *adev,
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struct amdgpu_sa_manager *sa_manager);
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int amdgpu_sa_bo_new(struct amdgpu_sa_manager *sa_manager,
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struct amdgpu_sa_bo **sa_bo,
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unsigned size, unsigned align);
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void amdgpu_sa_bo_free(struct amdgpu_device *adev,
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struct amdgpu_sa_bo **sa_bo,
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struct dma_fence *fence);
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#if defined(CONFIG_DEBUG_FS)
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void amdgpu_sa_bo_dump_debug_info(struct amdgpu_sa_manager *sa_manager,
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struct seq_file *m);
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#endif
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#endif
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