diff options
| author | Lijo Lazar <lijo.lazar@amd.com> | 2025-11-06 13:49:59 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2025-11-14 11:26:58 -0500 |
| commit | 43d08222adf70f6b3ff6ded8dd8e8e4ed3ceff05 (patch) | |
| tree | b24b2f2d7efbb463b07cdd53fe56d0391772354d | |
| parent | 076470b9f6f8d9c7c8ca73a9f054942a686f9ba7 (diff) | |
drm/amdgpu: Avoid xgmi register access
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>
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c index 2f553af1d2a3..10e42b0ff7a2 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c @@ -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): |