iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

iommu: Add Allwinner H6 IOMMU driver

Browse Source 
The Allwinner H6 has introduced an IOMMU for a few DMA controllers, mostly
video related: the display engine, the video decoders / encoders, the
camera capture controller, etc.

The design is pretty simple compared to other IOMMUs found in SoCs: there's
a single instance, controlling all the masters, with a single address
space.

It also features a performance monitoring unit that allows to retrieve
various informations (per-master and global TLB accesses, hits and misses,
access latency, etc) that isn't supported at the moment.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/d122a8670361e36fc26b4ce2674a2223d30dc4cc.1589378833.git-series.maxime@cerno.tech
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Maxime Ripard 2020-05-13 16:07:22 +02:00 committed by Joerg Roedel
parent db7d3cbd6a
commit 4100b8c229
3 changed files with 1037 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/iommu/Kconfig
View File

@ -303,6 +303,15 @@ config ROCKCHIP_IOMMU
Say Y here if you are using a Rockchip SoC that includes an IOMMU Say Y here if you are using a Rockchip SoC that includes an IOMMU
device. device.
config SUN50I_IOMMU
bool "Allwinner H6 IOMMU Support"
depends on ARCH_SUNXI || COMPILE_TEST
select ARM_DMA_USE_IOMMU
select IOMMU_API
select IOMMU_DMA
help
Support for the IOMMU introduced in the Allwinner H6 SoCs.
config TEGRA_IOMMU_GART config TEGRA_IOMMU_GART
bool "Tegra GART IOMMU Support" bool "Tegra GART IOMMU Support"
depends on ARCH_TEGRA_2x_SOC depends on ARCH_TEGRA_2x_SOC

1
drivers/iommu/Makefile
View File

@ -29,6 +29,7 @@ obj-$(CONFIG_MTK_IOMMU_V1) += mtk_iommu_v1.o
obj-$(CONFIG_OMAP_IOMMU) += omap-iommu.o obj-$(CONFIG_OMAP_IOMMU) += omap-iommu.o
obj-$(CONFIG_OMAP_IOMMU_DEBUG) += omap-iommu-debug.o obj-$(CONFIG_OMAP_IOMMU_DEBUG) += omap-iommu-debug.o
obj-$(CONFIG_ROCKCHIP_IOMMU) += rockchip-iommu.o obj-$(CONFIG_ROCKCHIP_IOMMU) += rockchip-iommu.o
obj-$(CONFIG_SUN50I_IOMMU) += sun50i-iommu.o
obj-$(CONFIG_TEGRA_IOMMU_GART) += tegra-gart.o obj-$(CONFIG_TEGRA_IOMMU_GART) += tegra-gart.o
obj-$(CONFIG_TEGRA_IOMMU_SMMU) += tegra-smmu.o obj-$(CONFIG_TEGRA_IOMMU_SMMU) += tegra-smmu.o
obj-$(CONFIG_EXYNOS_IOMMU) += exynos-iommu.o obj-$(CONFIG_EXYNOS_IOMMU) += exynos-iommu.o

1027
drivers/iommu/sun50i-iommu.c Normal file
View File

File diff suppressed because it is too large Load Diff