1 files changed, 74 insertions, 0 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index e39f9dbf297b..d364494c9e7c 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -187,4 +187,78 @@ config EXYNOS_IOMMU_DEBUG
 
 	  Say N unless you need kernel log message for IOMMU debugging
 
+config SHMOBILE_IPMMU
+	bool
+
+config SHMOBILE_IPMMU_TLB
+	bool
+
+config SHMOBILE_IOMMU
+	bool "IOMMU for Renesas IPMMU/IPMMUI"
+	default n
+	depends on (ARM && ARCH_SHMOBILE)
+	select IOMMU_API
+	select ARM_DMA_USE_IOMMU
+	select SHMOBILE_IPMMU
+	select SHMOBILE_IPMMU_TLB
+	help
+	  Support for Renesas IPMMU/IPMMUI. This option enables
+	  remapping of DMA memory accesses from all of the IP blocks
+	  on the ICB.
+
+	  Warning: Drivers (including userspace drivers of UIO
+	  devices) of the IP blocks on the ICB *must* use addresses
+	  allocated from the IPMMU (iova) for DMA with this option
+	  enabled.
+
+	  If unsure, say N.
+
+choice
+	prompt "IPMMU/IPMMUI address space size"
+	default SHMOBILE_IOMMU_ADDRSIZE_2048MB
+	depends on SHMOBILE_IOMMU
+	help
+	  This option sets IPMMU/IPMMUI address space size by
+	  adjusting the 1st level page table size. The page table size
+	  is calculated as follows:
+
+	      page table size = number of page table entries * 4 bytes
+	      number of page table entries = address space size / 1 MiB
+
+	  For example, when the address space size is 2048 MiB, the
+	  1st level page table size is 8192 bytes.
+
+	config SHMOBILE_IOMMU_ADDRSIZE_2048MB
+		bool "2 GiB"
+
+	config SHMOBILE_IOMMU_ADDRSIZE_1024MB
+		bool "1 GiB"
+
+	config SHMOBILE_IOMMU_ADDRSIZE_512MB
+		bool "512 MiB"
+
+	config SHMOBILE_IOMMU_ADDRSIZE_256MB
+		bool "256 MiB"
+
+	config SHMOBILE_IOMMU_ADDRSIZE_128MB
+		bool "128 MiB"
+
+	config SHMOBILE_IOMMU_ADDRSIZE_64MB
+		bool "64 MiB"
+
+	config SHMOBILE_IOMMU_ADDRSIZE_32MB
+		bool "32 MiB"
+
+endchoice
+
+config SHMOBILE_IOMMU_L1SIZE
+	int
+	default 8192 if SHMOBILE_IOMMU_ADDRSIZE_2048MB
+	default 4096 if SHMOBILE_IOMMU_ADDRSIZE_1024MB
+	default 2048 if SHMOBILE_IOMMU_ADDRSIZE_512MB
+	default 1024 if SHMOBILE_IOMMU_ADDRSIZE_256MB
+	default 512 if SHMOBILE_IOMMU_ADDRSIZE_128MB
+	default 256 if SHMOBILE_IOMMU_ADDRSIZE_64MB
+	default 128 if SHMOBILE_IOMMU_ADDRSIZE_32MB
+
 endif # IOMMU_SUPPORT