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authorRobin Murphy <robin.murphy@arm.com>2016-04-05 12:39:31 +0100
committerJoerg Roedel <jroedel@suse.de>2016-04-07 15:07:50 +0200
commitfb948251e4be1f4aedbe17ec96890ceee147c6d6 (patch)
treeeefeb0c21ac89fd3047b921a6e81ca69b28655dc /drivers/iommu/io-pgtable-arm.c
parent31e6850e0fdb3a586363cc4d2f9801cdf9374310 (diff)
iommu/io-pgtable-arm: Support IOMMU_MMIO flag
Teach the LPAE format to create Device mappings when asked. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Tested-by: Eric Auger <eric.auger@linaro.org> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/io-pgtable-arm.c')
-rw-r--r--drivers/iommu/io-pgtable-arm.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c
index f433b516098a..a1ed1b73fed4 100644
--- a/drivers/iommu/io-pgtable-arm.c
+++ b/drivers/iommu/io-pgtable-arm.c
@@ -355,7 +355,10 @@ static arm_lpae_iopte arm_lpae_prot_to_pte(struct arm_lpae_io_pgtable *data,
if (!(prot & IOMMU_WRITE) && (prot & IOMMU_READ))
pte |= ARM_LPAE_PTE_AP_RDONLY;
- if (prot & IOMMU_CACHE)
+ if (prot & IOMMU_MMIO)
+ pte |= (ARM_LPAE_MAIR_ATTR_IDX_DEV
+ << ARM_LPAE_PTE_ATTRINDX_SHIFT);
+ else if (prot & IOMMU_CACHE)
pte |= (ARM_LPAE_MAIR_ATTR_IDX_CACHE
<< ARM_LPAE_PTE_ATTRINDX_SHIFT);
} else {
@@ -364,7 +367,9 @@ static arm_lpae_iopte arm_lpae_prot_to_pte(struct arm_lpae_io_pgtable *data,
pte |= ARM_LPAE_PTE_HAP_READ;
if (prot & IOMMU_WRITE)
pte |= ARM_LPAE_PTE_HAP_WRITE;
- if (prot & IOMMU_CACHE)
+ if (prot & IOMMU_MMIO)
+ pte |= ARM_LPAE_PTE_MEMATTR_DEV;
+ else if (prot & IOMMU_CACHE)
pte |= ARM_LPAE_PTE_MEMATTR_OIWB;
else
pte |= ARM_LPAE_PTE_MEMATTR_NC;