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iommu/mediatek: Add mt8173 IOMMU driver

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This patch adds support for mediatek m4u (MultiMedia Memory Management
Unit).

Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Yong Wu
2016-02-23 01:20:50 +08:00
committed by Joerg Roedel
parent cc8bbe1a83
commit 0df4fabe20
3 changed files with 754 additions and 0 deletions
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16
drivers/iommu/Kconfig
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@@ -337,4 +337,20 @@ config S390_IOMMU
help
Support for the IOMMU API for s390 PCI devices.
config MTK_IOMMU
bool "MTK IOMMU Support"
depends on ARM || ARM64
depends on ARCH_MEDIATEK || COMPILE_TEST
select IOMMU_API
select IOMMU_DMA
select IOMMU_IO_PGTABLE_ARMV7S
select MEMORY
select MTK_SMI
help
Support for the M4U on certain Mediatek SOCs. M4U is MultiMedia
Memory Management Unit. This option enables remapping of DMA memory
accesses for the multimedia subsystem.
If unsure, say N here.
endif # IOMMU_SUPPORT

1
drivers/iommu/Makefile
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@@ -17,6 +17,7 @@ obj-$(CONFIG_INTEL_IOMMU) += intel-iommu.o
obj-$(CONFIG_INTEL_IOMMU_SVM) += intel-svm.o
obj-$(CONFIG_IPMMU_VMSA) += ipmmu-vmsa.o
obj-$(CONFIG_IRQ_REMAP) += intel_irq_remapping.o irq_remapping.o
obj-$(CONFIG_MTK_IOMMU) += mtk_iommu.o
obj-$(CONFIG_OMAP_IOMMU) += omap-iommu.o
obj-$(CONFIG_OMAP_IOMMU_DEBUG) += omap-iommu-debug.o
obj-$(CONFIG_ROCKCHIP_IOMMU) += rockchip-iommu.o

737
drivers/iommu/mtk_iommu.c Normal file
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