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drm/amdgpu: Enable xgmi extended peer links for sriov guest

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The amd-smi tool relies on extended peer link information to report xgmi
link metrics. The necessary xgmi ta command, GET_EXTEND_PEER_LINKS, has
been enabled in the host driver and this change is necessary for the
guest to make use of it. To handle the case where the host driver does
not have the latest xgmi ta, the guest driver checks for guest support
through a pf2vf feature flag before invoking psp.

Signed-off-by: Will Aitken <wiaitken@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Will Aitken 2025-10-07 14:49:15 +00:00 committed by Alex Deucher
parent 4d0e55965c
commit f8bdb559c0
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
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@ -1649,8 +1649,8 @@ int psp_xgmi_get_topology_info(struct psp_context *psp,
amdgpu_ip_version(psp->adev, MP0_HWIP, 0) ==
IP_VERSION(13, 0, 14) ||
amdgpu_sriov_vf(psp->adev);
bool ta_port_num_support = amdgpu_sriov_vf(psp->adev) ? 0 :
psp->xgmi_context.xgmi_ta_caps & EXTEND_PEER_LINK_INFO_CMD_FLAG;
bool ta_port_num_support = psp->xgmi_context.xgmi_ta_caps & EXTEND_PEER_LINK_INFO_CMD_FLAG ||
amdgpu_sriov_xgmi_ta_ext_peer_link_en(psp->adev);
/* popluate the shared output buffer rather than the cmd input buffer
* with node_ids as the input for GET_PEER_LINKS command execution.