accel/ivpu: Force snooping for MMU writes

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[ Upstream commit c9da9a1f17 ]

Set AW_SNOOP_OVERRIDE bit in VPU_37/40XX_HOST_IF_TCU_PTW_OVERRIDES
to force snooping for MMU write accesses (setting event queue events).

MMU event queue buffer is the only buffer written by MMU and
mapped as write-back which break cache coherency. Force write
transactions to be snooped solving the problem.

Signed-off-by: Wachowski, Karol <karol.wachowski@intel.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240126122804.2169129-2-jacek.lawrynowicz@linux.intel.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Wachowski, Karol 2024-01-26 13:27:58 +01:00 • committed by Greg Kroah-Hartman

parent d382f733c8

commit e11aa13216

3 changed files with 2 additions and 5 deletions

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2

drivers/accel/ivpu/ivpu_hw_37xx.c

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2

drivers/accel/ivpu/ivpu_hw_40xx.c

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3

drivers/accel/ivpu/ivpu_mmu.c

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