Use shadow flag to judge which direction to sync.
V2:
Don't need bo pin, so remove it.
Change-Id: I9b540970d3a24c6aebeaa94c99f66a89134c663d
Signed-off-by: Chunming Zhou <David1.Zhou at amd.com>
Reviewed-by: Christian König <christian.koenig at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 43 ++++++++++++++++++++++++++++++
drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 5 ++++
2 files changed, 48 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index 2b3aec3..3ba0448 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -443,6 +443,49 @@ int amdgpu_bo_create(struct amdgpu_device *adev,
return r;
}
+int amdgpu_bo_backup_shadow(struct amdgpu_device *adev,
+ struct amdgpu_ring *ring,
+ struct amdgpu_bo *bo,
+ struct reservation_object *resv,
+ struct fence **fence,
+ bool direct)
+
+{
+ struct amdgpu_bo *shadow = bo->shadow;
+ uint64_t bo_addr, shadow_addr;
+ int r;
+
+ if (!shadow)
+ return -EINVAL;
+
+ if (bo->backup_shadow == AMDGPU_BO_SHADOW_TO_NONE) {
+ DRM_INFO("No need to backup bo and shadow\n");
+ return 0;
+ }
+ bo_addr = amdgpu_bo_gpu_offset(bo);
+ shadow_addr = amdgpu_bo_gpu_offset(bo->shadow);
+
+ r = reservation_object_reserve_shared(bo->tbo.resv);
+ if (r)
+ goto err;
+
+ if (bo->backup_shadow & AMDGPU_BO_SHADOW_TO_PARENT)
+ r = amdgpu_copy_buffer(ring, shadow_addr, bo_addr,
+ amdgpu_bo_size(bo), resv, fence,
+ direct);
+ else
+ r = amdgpu_copy_buffer(ring, bo_addr, shadow_addr,
+ amdgpu_bo_size(bo), resv, fence,
+ direct);
+ if (!r) {
+ amdgpu_bo_fence(bo, *fence, true);
+ bo->backup_shadow = AMDGPU_BO_SHADOW_TO_NONE;
+ }
+err:
+
+ return r;
+}
+
int amdgpu_bo_kmap(struct amdgpu_bo *bo, void **ptr)
{
bool is_iomem;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
index d650b42..bb076d0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
@@ -155,6 +155,11 @@ int amdgpu_bo_fault_reserve_notify(struct ttm_buffer_object *bo);
void amdgpu_bo_fence(struct amdgpu_bo *bo, struct fence *fence,
bool shared);
u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo);
+int amdgpu_bo_backup_shadow(struct amdgpu_device *adev,
+ struct amdgpu_ring *ring,
+ struct amdgpu_bo *bo,
+ struct reservation_object *resv,
+ struct fence **fence, bool direct);
/*
* sub allocation
--
1.9.1
