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authorKyongHo Cho <pullip.cho@samsung.com>2012-05-11 20:56:09 (GMT)
committerKukjin Kim <kgene.kim@samsung.com>2012-05-11 20:56:09 (GMT)
commit2a96536e77b43cf1e70ab3ad8b46b98ab52b56c1 (patch)
tree0ecdf6612ad9682a3c1f04607b0cff23fe47940a /drivers/iommu/Kconfig
parentbca10b906f8d2e4f177bff047b9d623941e454f7 (diff)
downloadlinux-2a96536e77b43cf1e70ab3ad8b46b98ab52b56c1.tar.xz
iommu/exynos: Add iommu driver for EXYNOS Platforms
This is the System MMU driver and IOMMU API implementation for EXYNOS SoC platforms. EXYNOS platforms has more than 10 System MMUs dedicated for each multimedia accelerators. The System MMU driver is already in arc/arm/plat-s5p but it is moved to drivers/iommu due to Ohad Ben-Cohen gathered IOMMU drivers there. Any device driver in EXYNOS platforms that needs to control its System MMU must call platform_set_sysmmu() to inform System MMU driver who will control it. platform_set_sysmmu() is defined in <mach/sysmmu.h> Signed-off-by: KyongHo Cho <pullip.cho@samsung.com> Acked-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'drivers/iommu/Kconfig')
-rw-r--r--drivers/iommu/Kconfig21
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 3bd9fff..23db792 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -162,4 +162,25 @@ config TEGRA_IOMMU_SMMU
space through the SMMU (System Memory Management Unit)
hardware included on Tegra SoCs.
+config EXYNOS_IOMMU
+ bool "Exynos IOMMU Support"
+ depends on ARCH_EXYNOS && EXYNOS_DEV_SYSMMU
+ select IOMMU_API
+ help
+ Support for the IOMMU(System MMU) of Samsung Exynos application
+ processor family. This enables H/W multimedia accellerators to see
+ non-linear physical memory chunks as a linear memory in their
+ address spaces
+
+ If unsure, say N here.
+
+config EXYNOS_IOMMU_DEBUG
+ bool "Debugging log for Exynos IOMMU"
+ depends on EXYNOS_IOMMU
+ help
+ Select this to see the detailed log message that shows what
+ happens in the IOMMU driver
+
+ Say N unless you need kernel log message for IOMMU debugging
+
endif # IOMMU_SUPPORT