Commit e7468a23 authored by Jeremy Gebben's avatar Jeremy Gebben Committed by Will Deacon

iommu/io-pgtable-arm: add support for the IOMMU_PRIV flag

Allow the creation of privileged mode mappings, for stage 1 only.
Reviewed-by: default avatarRobin Murphy <robin.murphy@arm.com>
Tested-by: default avatarRobin Murphy <robin.murphy@arm.com>
Acked-by: default avatarWill Deacon <will.deacon@arm.com>
Signed-off-by: default avatarJeremy Gebben <jgebben@codeaurora.org>
Signed-off-by: default avatarWill Deacon <will.deacon@arm.com>
parent 579b2a65
...@@ -350,11 +350,14 @@ static arm_lpae_iopte arm_lpae_prot_to_pte(struct arm_lpae_io_pgtable *data, ...@@ -350,11 +350,14 @@ static arm_lpae_iopte arm_lpae_prot_to_pte(struct arm_lpae_io_pgtable *data,
if (data->iop.fmt == ARM_64_LPAE_S1 || if (data->iop.fmt == ARM_64_LPAE_S1 ||
data->iop.fmt == ARM_32_LPAE_S1) { data->iop.fmt == ARM_32_LPAE_S1) {
pte = ARM_LPAE_PTE_AP_UNPRIV | ARM_LPAE_PTE_nG; pte = ARM_LPAE_PTE_nG;
if (!(prot & IOMMU_WRITE) && (prot & IOMMU_READ)) if (!(prot & IOMMU_WRITE) && (prot & IOMMU_READ))
pte |= ARM_LPAE_PTE_AP_RDONLY; pte |= ARM_LPAE_PTE_AP_RDONLY;
if (!(prot & IOMMU_PRIV))
pte |= ARM_LPAE_PTE_AP_UNPRIV;
if (prot & IOMMU_MMIO) if (prot & IOMMU_MMIO)
pte |= (ARM_LPAE_MAIR_ATTR_IDX_DEV pte |= (ARM_LPAE_MAIR_ATTR_IDX_DEV
<< ARM_LPAE_PTE_ATTRINDX_SHIFT); << ARM_LPAE_PTE_ATTRINDX_SHIFT);
......
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