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e2ef1c4676
Unlike Gen11, Gen12 hardware supports up to three pixel pipes per slice. Unfortunately the kernel interface is somewhat inconsistent between Gen11 and Gen12: I915_PARAM_SUBSLICE_MASK returns a mask of enabled *dual* subslices since TGL, so there is half the number of bits per pixel pipe in the mask. This is worked around here so we're able to calculate the correct size of each pixel pipe, but the result is returned in dual subslice units, inheriting the inconsistency from the kernel -- Reason is that as of now all our Gen12 subslice counts returned by gen_device_info.c are really dual subslice counts, and the num_eu_per_subslice counts are also scaled accordingly, so it seems like it would only make the matter worse if I fixed the units of this field only without also fixing the rest. Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8749> |
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