drm/amdgpu: sync bo and shadow V3

Use shadow flag to judge which direction to sync.
V2:
Don't need bo pin, so remove it.

V3:
1. Split to two functions, one is backup_to_shadow, another is
restore_from_shadow.
2. Clean up previous shadow direction difinitions.

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 0 insertions, 8 deletions

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index 6fa826846e6d..1d6f077d605b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -438,12 +438,6 @@ struct amdgpu_bo_va {
 
 #define AMDGPU_GEM_DOMAIN_MAX           0x3
 
-enum amdgpu_bo_shadow {
-        AMDGPU_BO_SHADOW_TO_NONE = 0,
-        AMDGPU_BO_SHADOW_TO_PARENT,
-        AMDGPU_BO_SHADOW_TO_SHADOW,
-};
-
 struct amdgpu_bo {
         /* Protected by gem.mutex */
         struct list_head                list;
@@ -470,8 +464,6 @@ struct amdgpu_bo {
         struct drm_gem_object           gem_base;
         struct amdgpu_bo                *parent;
         struct amdgpu_bo                *shadow;
-        /* indicate if need to sync between bo and shadow */
-        enum amdgpu_bo_shadow           backup_shadow;
 
         struct ttm_bo_kmap_obj          dma_buf_vmap;
         struct amdgpu_mn                *mn;