accel/ivpu/37xx: Fix interrupt_clear_with_0 WA initialization

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Using PCI Device ID/Revision to initialize the interrupt_clear_with_0
workaround is problematic - there are many pre-production
steppings with different behavior, even with the same PCI ID/Revision

Instead of checking for PCI Device ID/Revision, check the VPU
buttress interrupt status register behavior - if this register
is not zero after writing 1s it means there register is RW
instead of RW1C and we need to enable the interrupt_clear_with_0
workaround.

Fixes: 7f34e01f77 ("accel/ivpu: Clear specific interrupt status bits on C0")
Signed-off-by: Andrzej Kacprowski <Andrzej.Kacprowski@intel.com>
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Link: https://lore.kernel.org/all/20231204122331.40560-1-jacek.lawrynowicz@linux.intel.com

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Andrzej Kacprowski 2023-12-04 13:23:31 +01:00 • committed by Jacek Lawrynowicz

parent 6e455f5dcd

commit 35c49cfc8b

1 changed files with 9 additions and 3 deletions

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drivers/accel/ivpu/ivpu_hw_37xx.c

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