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Commit a1b62127 authored by Kenneth Graunke's avatar Kenneth Graunke Committed by Dylan Baker
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intel: Increase Gen11 compute shader scratch IDs to 64.


From the MEDIA_VFE_STATE docs:

   "Starting with this configuration, the Maximum Number of Threads must
    be set to (#EU * 8) for GPGPU dispatches.

    Although there are only 7 threads per EU in the configuration, the
    FFTID is calculated as if there are 8 threads per EU, which in turn
    requires a larger amount of Scratch Space to be allocated by the
    driver."

It's pretty clear that we need to increase this for scratch address
calculations, because the FFTID has a certain bit-pattern.  The quote
above seems to indicate that we should increase the actual thread count
programmed in MEDIA_VFE_STATE as well, but we think the intention is to
only bump the scratch space.

Fixes GPU hangs in Bioshock Infinite and Synmark's CSDof on Icelake 8x8.

Fixes: 5ac804bd ("intel: Add a preliminary device for Ice Lake")
Reviewed-by: default avatarMatt Turner <mattst88@gmail.com>
(cherry picked from commit b9e93db2)
parent 9f94cd71
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