From: Christian König <christian.koe...@amd.com>
An invalid offset to be used by custom VRAM/GGT manager when we
don't have an offset for an BO.
Signed-off-by: Christian König <christian.koe...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 1 +
drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 2 ++
2 files changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
index e503ca1..151a706 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
@@ -956,6 +956,7 @@ u64 amdgpu_bo_gpu_offset(struct amdgpu_bo *bo)
!amdgpu_ttm_is_bound(bo->tbo.ttm));
WARN_ON_ONCE(!ww_mutex_is_locked(&bo->tbo.resv->lock) &&
!bo->pin_count);
+ WARN_ON_ONCE(bo->tbo.mem.start == AMDGPU_BO_INVALID_OFFSET);
return bo->tbo.offset;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
index 3032c54..8255034 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
@@ -31,6 +31,8 @@
#include <drm/amdgpu_drm.h>
#include "amdgpu.h"
+#define AMDGPU_BO_INVALID_OFFSET LONG_MAX
+
/**
* amdgpu_mem_type_to_domain - return domain corresponding to mem_type
* @mem_type: ttm memory type
--
2.5.0
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