[PATCH 46/95] drm/amdgpu: Add ualink handle to BOs

From: Mukul Joshi <[email protected]>

Add a ualink handle to the amdgpu_bo struct. The ualink
handle is a 128-bit unique identifier associated with a
BO and is shared across the network to facilitate NPA based
memory sharing across GPUs in a rack scale setup.
We are only storing the low 64 bits of that handle in the BO
struct as that is gauranteed to be unique.

Signed-off-by: Mukul Joshi <[email protected]>
Reviewed-by: Felix Kuehling <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.h | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
index b41767c7913ac..2e6a8e6f577a7 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
@@ -125,6 +125,9 @@ struct amdgpu_bo {
 	 * for memory accounting.
 	 */
 	int8_t				xcp_id;
+
+	/* UALink Handle low 64 bits*/
+	u64				ualink_handle_lo;
 };
 
 struct amdgpu_bo_user {
-- 
2.55.0