drm/amdgpu: Add pcie replay count callback to nbio

Add a callback in nbio to get pcie replay count.
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.c

@@ -45,6 +45,14 @@ int amdgpu_nbio_ras_sw_init(struct amdgpu_device *adev)
 	return 0;
 }
 
+u64 amdgpu_nbio_get_pcie_replay_count(struct amdgpu_device *adev)
+{
+	if (adev->nbio.funcs && adev->nbio.funcs->get_pcie_replay_count)
+		return adev->nbio.funcs->get_pcie_replay_count(adev);
+
+	return 0;
+}
+
 int amdgpu_nbio_ras_late_init(struct amdgpu_device *adev, struct ras_common_if *ras_block)
 {
 	int r;

drivers/gpu/drm/amd/amdgpu/amdgpu_nbio.h

@@ -99,6 +99,7 @@ struct amdgpu_nbio_funcs {
 	int (*get_compute_partition_mode)(struct amdgpu_device *adev);
 	u32 (*get_memory_partition_mode)(struct amdgpu_device *adev,
 					 u32 *supp_modes);
+	u64 (*get_pcie_replay_count)(struct amdgpu_device *adev);
 };
 
 struct amdgpu_nbio {
@@ -112,4 +113,6 @@ struct amdgpu_nbio {
 
 int amdgpu_nbio_ras_sw_init(struct amdgpu_device *adev);
 int amdgpu_nbio_ras_late_init(struct amdgpu_device *adev, struct ras_common_if *ras_block);
+u64 amdgpu_nbio_get_pcie_replay_count(struct amdgpu_device *adev);
+
 #endif