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iommu/arm-smmu-qcom-debug: Add support for TBUs

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Operating the TBUs (Translation Buffer Units) from Linux on Qualcomm
platforms can help with debugging context faults. To help with that,
the TBUs can run ATOS (Address Translation Operations) to manually
trigger address translation of IOVA to physical address in hardware
and provide more details when a context fault happens.

The driver will control the resources needed by the TBU to allow
running the debug operations such as ATOS, check for outstanding
transactions, do snapshot capture etc.

Signed-off-by: Georgi Djakov <quic_c_gdjako@quicinc.com>
Link: https://lore.kernel.org/r/20240417133731.2055383-3-quic_c_gdjako@quicinc.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Georgi Djakov 2024-04-17 06:37:26 -07:00 • committed by Will Deacon
commit 414ecb0308
4 changed files with 365 additions and 4 deletions
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