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drm/amdgpu: Avoid xgmi register access

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On single GPU systems, avoid accesses to XGMI link registers.

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>
This commit is contained in:
Lijo Lazar
2025-11-06 13:49:59 +05:30
committed by Alex Deucher
parent 076470b9f6
commit 43d08222ad
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c
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@@ -298,6 +298,9 @@ int amdgpu_xgmi_get_ext_link(struct amdgpu_device *adev, int link_num)
{
int link_map_6_4_x[8] = { 0, 3, 1, 2, 7, 6, 4, 5 };
if (adev->gmc.xgmi.num_physical_nodes <= 1)
return -EINVAL;
switch (amdgpu_ip_version(adev, XGMI_HWIP, 0)) {
case IP_VERSION(6, 4, 0):
case IP_VERSION(6, 4, 1):
@@ -346,6 +349,9 @@ int amdgpu_get_xgmi_link_status(struct amdgpu_device *adev, int global_link_num)
{
u32 xgmi_state_reg_val;
if (adev->gmc.xgmi.num_physical_nodes <= 1)
return -EINVAL;
switch (amdgpu_ip_version(adev, XGMI_HWIP, 0)) {
case IP_VERSION(6, 4, 0):
case IP_VERSION(6, 4, 1):