diff options
| author | Lijo Lazar <[email protected]> | 2025-02-06 11:54:51 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2025-02-27 21:50:04 +0000 |
| commit | 485993e2f1a6bf3d1e8fb5a38c82edd3ae697ad9 (patch) | |
| tree | e9d815afb47bc64233201a5c82a856aefad78e71 /drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c | |
| parent | drm/amdgpu: Move xgmi definitions to xgmi header (diff) | |
| download | kernel-485993e2f1a6bf3d1e8fb5a38c82edd3ae697ad9.tar.gz kernel-485993e2f1a6bf3d1e8fb5a38c82edd3ae697ad9.zip | |
drm/amdgpu: Add xgmi speed/width related info
Add APIs to initialize XGMI speed, width details and get to max
bandwidth supported. It is assumed that a device only supports same
generation of XGMI links with uniform width.
Signed-off-by: Lijo Lazar <[email protected]>
Reviewed-by: Hawking Zhang <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c index 59e44d20124f..9c539f26e5fd 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_xgmi.c @@ -1722,3 +1722,26 @@ bool amdgpu_xgmi_same_hive(struct amdgpu_device *adev, adev->gmc.xgmi.hive_id && adev->gmc.xgmi.hive_id == bo_adev->gmc.xgmi.hive_id); } + +void amdgpu_xgmi_early_init(struct amdgpu_device *adev) +{ + if (!adev->gmc.xgmi.supported) + return; + + switch (amdgpu_ip_version(adev, GC_HWIP, 0)) { + case IP_VERSION(9, 4, 0): + case IP_VERSION(9, 4, 1): + case IP_VERSION(9, 4, 2): + adev->gmc.xgmi.max_speed = XGMI_SPEED_25GT; + adev->gmc.xgmi.max_width = 16; + break; + case IP_VERSION(9, 4, 3): + case IP_VERSION(9, 4, 4): + case IP_VERSION(9, 5, 0): + adev->gmc.xgmi.max_speed = XGMI_SPEED_32GT; + adev->gmc.xgmi.max_width = 16; + break; + default: + break; + } +} |