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iommu: Tidy up Kconfig for SoC IOMMUs

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Wacky COMPILE_TEST dependencies based on who used to define
dev_archdata.iommu can go.

Dependencies on ARM or ARM64 already implied by the ARCH_* platform
selection can go.

The entire IOMMU_SUPPORT menu already depends on MMU, so those can go.

IOMMU_DMA is for the architecture's DMA API implementation to choose,
and its interface to IOMMU drivers is properly stubbed out if disabled,
so dependencies on or selections of that can go (AMD_IOMMU is the
current exception since the x86 drivers have to provide their own entire
dma_map_ops implementation).

Since commit ed6ccf10f2 ("dma-mapping: properly stub out the DMA API
for !CONFIG_HAS_DMA"), drivers which simply use the dma-mapping API
should not need to depend on HAS_DMA, so those can go.

And a long-dead option for code removed from the MSM driver 4 years ago
can also go.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/7fb9c74dc6bd12a4619ca44c92408e91352f1be0.1593791968.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Robin Murphy 2020-07-03 17:03:19 +01:00 committed by Joerg Roedel
parent 557d4bec00
commit b4ceb4a535
1 changed files with 3 additions and 12 deletions
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15
drivers/iommu/Kconfig
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@ -128,10 +128,6 @@ config MSM_IOMMU
If unsure, say N here.
config IOMMU_PGTABLES_L2
def_bool y
depends on MSM_IOMMU && MMU && SMP && CPU_DCACHE_DISABLE=n
# AMD IOMMU support
config AMD_IOMMU
bool "AMD IOMMU support"
@ -274,7 +270,6 @@ config IRQ_REMAP
# OMAP IOMMU support
config OMAP_IOMMU
bool "OMAP IOMMU Support"
depends on ARM && MMU || (COMPILE_TEST && (ARM || ARM64 || IA64 || SPARC))
depends on ARCH_OMAP2PLUS || COMPILE_TEST
select IOMMU_API
help
@ -292,7 +287,6 @@ config OMAP_IOMMU_DEBUG
config ROCKCHIP_IOMMU
bool "Rockchip IOMMU Support"
depends on ARM || ARM64 || (COMPILE_TEST && (ARM64 || IA64 || SPARC))
depends on ARCH_ROCKCHIP || COMPILE_TEST
select IOMMU_API
select ARM_DMA_USE_IOMMU
@ -308,7 +302,6 @@ config SUN50I_IOMMU
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.
@ -335,7 +328,7 @@ config TEGRA_IOMMU_SMMU
config EXYNOS_IOMMU
bool "Exynos IOMMU Support"
depends on ARCH_EXYNOS && MMU || (COMPILE_TEST && (ARM || ARM64 || IA64 || SPARC))
depends on ARCH_EXYNOS || COMPILE_TEST
depends on !CPU_BIG_ENDIAN # revisit driver if we can enable big-endian ptes
select IOMMU_API
select ARM_DMA_USE_IOMMU
@ -358,7 +351,7 @@ config EXYNOS_IOMMU_DEBUG
config IPMMU_VMSA
bool "Renesas VMSA-compatible IPMMU"
depends on ARM || IOMMU_DMA
depends on ARM || ARM64
depends on ARCH_RENESAS || (COMPILE_TEST && !GENERIC_ATOMIC64)
select IOMMU_API
select IOMMU_IO_PGTABLE_LPAE
@ -380,7 +373,7 @@ config SPAPR_TCE_IOMMU
# ARM IOMMU support
config ARM_SMMU
tristate "ARM Ltd. System MMU (SMMU) Support"
depends on (ARM64 || ARM || (COMPILE_TEST && !GENERIC_ATOMIC64)) && MMU
depends on ARM64 || ARM || (COMPILE_TEST && !GENERIC_ATOMIC64)
select IOMMU_API
select IOMMU_IO_PGTABLE_LPAE
select ARM_DMA_USE_IOMMU if ARM
@ -466,11 +459,9 @@ config S390_AP_IOMMU
config MTK_IOMMU
bool "MTK IOMMU Support"
depends on HAS_DMA
depends on ARCH_MEDIATEK || COMPILE_TEST
select ARM_DMA_USE_IOMMU
select IOMMU_API
select IOMMU_DMA
select IOMMU_IO_PGTABLE_ARMV7S
select MEMORY
select MTK_SMI