diff options
| author |   Jeremy Gebben <jgebben@codeaurora.org> | 2017-01-06 18:58:09 +0530 |
|---|---|---|
| committer |   Will Deacon <will.deacon@arm.com> | 2017-01-19 15:56:18 +0000 |
| commit | e7468a23daec1a7737a004c659fd041ddff8b918 (patch) | |
| tree | ce9bf9bb47fdd02cbf4e3cbafaf18d7d76cce946 /drivers/iommu | |
| parent | iommu: add IOMMU_PRIV attribute (diff) | |
| download | linux-dev-e7468a23daec1a7737a004c659fd041ddff8b918.tar.xz linux-dev-e7468a23daec1a7737a004c659fd041ddff8b918.zip | |
iommu/io-pgtable-arm: add support for the IOMMU_PRIV flag
Allow the creation of privileged mode mappings, for stage 1 only.
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Jeremy Gebben <jgebben@codeaurora.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/io-pgtable-arm.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c index a40ce3406fef..feacc54bec68 100644 --- a/drivers/iommu/io-pgtable-arm.c +++ b/drivers/iommu/io-pgtable-arm.c @@ -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 || 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)) pte |= ARM_LPAE_PTE_AP_RDONLY; + if (!(prot & IOMMU_PRIV)) + pte |= ARM_LPAE_PTE_AP_UNPRIV; + if (prot & IOMMU_MMIO) pte |= (ARM_LPAE_MAIR_ATTR_IDX_DEV << ARM_LPAE_PTE_ATTRINDX_SHIFT); |