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2018-01-17iommu: Clean up of_iommu_init_fnRobin Murphy1-1/+1
Now that no more drivers rely on arbitrary early initialisation via an of_iommu_init_fn hook, let's clean up the redundant remnants. The IOMMU_OF_DECLARE() macro needs to remain for now, as the probe-deferral mechanism has no other nice way to detect built-in drivers before they have registered themselves, such that it can make the right decision. Reviewed-by: Sricharan R <sricharan@codeaurora.org> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2017-11-03iommu: qcom: wire up fault handlerRob Clark1-5/+13
This is quite useful for debugging. Currently, always TERMINATE the translation when the fault handler returns (since this is all we need for debugging drivers). But I expect the SVM work should eventually let us do something more clever. Signed-off-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2017-10-02iommu/io-pgtable-arm-v7s: Convert to IOMMU API TLB syncRobin Murphy1-0/+15
Now that the core API issues its own post-unmap TLB sync call, push that operation out from the io-pgtable-arm-v7s internals into the users. For now, we leave the invalidation implicit in the unmap operation, since none of the current users would benefit much from any change to that. Note that the conversion of msm_iommu is implicit, since that apparently has no specific TLB sync operation anyway. CC: Yong Wu <yong.wu@mediatek.com> CC: Rob Clark <robdclark@gmail.com> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2017-08-28iommu: qcom: annotate PM functions as __maybe_unusedArnd Bergmann1-4/+2
The qcom_iommu_disable_clocks() function is only called from PM code that is hidden in an #ifdef, causing a harmless warning without CONFIG_PM: drivers/iommu/qcom_iommu.c:601:13: error: 'qcom_iommu_disable_clocks' defined but not used [-Werror=unused-function] static void qcom_iommu_disable_clocks(struct qcom_iommu_dev *qcom_iommu) drivers/iommu/qcom_iommu.c:581:12: error: 'qcom_iommu_enable_clocks' defined but not used [-Werror=unused-function] static int qcom_iommu_enable_clocks(struct qcom_iommu_dev *qcom_iommu) Replacing that #ifdef with __maybe_unused annotations lets the compiler drop the functions silently instead. Fixes: 0ae349a0f33f ("iommu/qcom: Add qcom_iommu") Acked-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2017-08-15iommu/qcom: Initialize secure page tableStanimir Varbanov1-0/+64
This basically gets the secure page table size, allocates memory for secure pagetables and passes the physical address to the trusted zone. Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Signed-off-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
2017-08-15iommu/qcom: Add qcom_iommuRob Clark1-0/+868
An iommu driver for Qualcomm "B" family devices which do implement the ARM SMMU spec, but not in a way that is compatible with how the arm-smmu driver is designed. It seems SMMU_SCR1.GASRAE=1 so the global register space is not accessible. This means it needs to get configuration from devicetree instead of setting it up dynamically. In the end, other than register definitions, there is not much code to share with arm-smmu (other than what has already been refactored out into the pgtable helpers). Signed-off-by: Rob Clark <robdclark@gmail.com> Tested-by: Riku Voipio <riku.voipio@linaro.org> Signed-off-by: Joerg Roedel <jroedel@suse.de>