drm/amdgpu: mask the xgmi number of hops reported from psp to kfd

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The psp supplies the link type in the upper 2 bits of the psp xgmi node
information num_hops field.  With a new link type, Aldebaran has these
bits set to a non-zero value (1 = xGMI3) so the KFD topology will report
the incorrect IO link weights without proper masking.
The actual number of hops is located in the 3 least significant bits of
this field so mask if off accordingly before passing it to the KFD.

Signed-off-by: Jonathan Kim <jonathan.kim@amd.com>
Reviewed-by: Amber Lin <amber.lin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Jonathan Kim 2021-01-27 15:24:59 -05:00 • committed by Alex Deucher

parent 9a9c59a8f4

commit 4ac5617c4b

1 changed files with 8 additions and 1 deletions

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

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