On 5/26/2022 9:44 AM, Sai Prakash Ranjan wrote:
TLB sync timeouts can be due to various reasons such as TBU power down or pending TCU/TBU invalidation/sync and so on. Debugging these often require dumping of some implementation defined registers to know the status of TBU/TCU operations and some of these registers are not accessible in non-secure world such as from kernel and requires SMC calls to read them in the secure world. So, add this debug support to dump implementation defined registers for TLB sync timeout issues.Signed-off-by: Sai Prakash Ranjan <quic_saipr...@quicinc.com> --- Changes in v2: * Use scm call consistently so that it works on older chipsets where some of these regs are secure registers. * Add device specific data to get the implementation defined register offsets. --- drivers/iommu/arm/arm-smmu/arm-smmu-qcom.c | 161 ++++++++++++++++++--- drivers/iommu/arm/arm-smmu/arm-smmu.c | 2 + drivers/iommu/arm/arm-smmu/arm-smmu.h | 1 + 3 files changed, 146 insertions(+), 18 deletions(-)
Any comments on this patch? Thanks, Sai _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
