This way we have one central definition of it, and user can select it as needed. Note that we also add a second ARCH_HAS_SWIOTLB symbol to indicate the architecture supports swiotlb at all, so that we can still make the usage optional for a few architectures that want this feature to be user selectable. Signed-off-by: Christoph Hellwig <hch@xxxxxx> --- arch/arm/Kconfig | 4 +--- arch/arm64/Kconfig | 5 ++--- arch/ia64/Kconfig | 9 +-------- arch/mips/Kconfig | 3 +++ arch/mips/cavium-octeon/Kconfig | 5 ----- arch/mips/loongson64/Kconfig | 8 -------- arch/powerpc/Kconfig | 9 --------- arch/unicore32/mm/Kconfig | 5 ----- arch/x86/Kconfig | 14 +++----------- lib/Kconfig | 15 +++++++++++++++ 10 files changed, 25 insertions(+), 52 deletions(-) diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 90b81a3a28a7..f91f69174630 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -106,6 +106,7 @@ config ARM select REFCOUNT_FULL select RTC_LIB select SYS_SUPPORTS_APM_EMULATION + select ARCH_HAS_SWIOTLB # Above selects are sorted alphabetically; please add new ones # according to that. Thanks. help @@ -1773,9 +1774,6 @@ config SECCOMP and the task is only allowed to execute a few safe syscalls defined by each seccomp mode. -config SWIOTLB - bool - config PARAVIRT bool "Enable paravirtualization code" help diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 4d924eb32e7f..056bc7365adf 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -21,6 +21,7 @@ config ARM64 select ARCH_HAS_SG_CHAIN select ARCH_HAS_STRICT_KERNEL_RWX select ARCH_HAS_STRICT_MODULE_RWX + select ARCH_HAS_SWIOTLB select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST select ARCH_HAVE_NMI_SAFE_CMPXCHG select ARCH_INLINE_READ_LOCK if !PREEMPT @@ -144,6 +145,7 @@ config ARM64 select POWER_SUPPLY select REFCOUNT_FULL select SPARSE_IRQ + select SWIOTLB select SYSCTL_EXCEPTION_TRACE select THREAD_INFO_IN_TASK help @@ -239,9 +241,6 @@ config HAVE_GENERIC_GUP config SMP def_bool y -config SWIOTLB - def_bool y - config KERNEL_MODE_NEON def_bool y diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig index 685d557eea48..d396230913e6 100644 --- a/arch/ia64/Kconfig +++ b/arch/ia64/Kconfig @@ -56,6 +56,7 @@ config IA64 select HAVE_ARCH_AUDITSYSCALL select NEED_DMA_MAP_STATE select NEED_SG_DMA_LENGTH + select ARCH_HAS_SWIOTLB default y help The Itanium Processor Family is Intel's 64-bit successor to @@ -80,9 +81,6 @@ config MMU bool default y -config SWIOTLB - bool - config STACKTRACE_SUPPORT def_bool y @@ -139,7 +137,6 @@ config IA64_GENERIC bool "generic" select NUMA select ACPI_NUMA - select DMA_DIRECT_OPS select SWIOTLB select PCI_MSI help @@ -160,7 +157,6 @@ config IA64_GENERIC config IA64_DIG bool "DIG-compliant" - select DMA_DIRECT_OPS select SWIOTLB config IA64_DIG_VTD @@ -176,7 +172,6 @@ config IA64_HP_ZX1 config IA64_HP_ZX1_SWIOTLB bool "HP-zx1/sx1000 with software I/O TLB" - select DMA_DIRECT_OPS select SWIOTLB help Build a kernel that runs on HP zx1 and sx1000 systems even when they @@ -200,7 +195,6 @@ config IA64_SGI_UV bool "SGI-UV" select NUMA select ACPI_NUMA - select DMA_DIRECT_OPS select SWIOTLB help Selecting this option will optimize the kernel for use on UV based @@ -211,7 +205,6 @@ config IA64_SGI_UV config IA64_HP_SIM bool "Ski-simulator" - select DMA_DIRECT_OPS select SWIOTLB depends on !PM diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index e10cc5c7be69..b6b4c1e154f8 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -912,6 +912,8 @@ config CAVIUM_OCTEON_SOC select MIPS_NR_CPU_NR_MAP_1024 select BUILTIN_DTB select MTD_COMPLEX_MAPPINGS + select ARCH_HAS_SWIOTLB + select SWIOTLB select SYS_SUPPORTS_RELOCATABLE help This option supports all of the Octeon reference boards from Cavium @@ -1367,6 +1369,7 @@ config CPU_LOONGSON3 select MIPS_PGD_C0_CONTEXT select MIPS_L1_CACHE_SHIFT_6 select GPIOLIB + select ARCH_HAS_SWIOTLB help The Loongson 3 processor implements the MIPS64R2 instruction set with many extensions. diff --git a/arch/mips/cavium-octeon/Kconfig b/arch/mips/cavium-octeon/Kconfig index 5d73041547a7..4984e462be30 100644 --- a/arch/mips/cavium-octeon/Kconfig +++ b/arch/mips/cavium-octeon/Kconfig @@ -67,11 +67,6 @@ config CAVIUM_OCTEON_LOCK_L2_MEMCPY help Lock the kernel's implementation of memcpy() into L2. -config SWIOTLB - def_bool y - select DMA_DIRECT_OPS - select NEED_SG_DMA_LENGTH - config OCTEON_ILM tristate "Module to measure interrupt latency using Octeon CIU Timer" help diff --git a/arch/mips/loongson64/Kconfig b/arch/mips/loongson64/Kconfig index 641a1477031e..c79e6a565572 100644 --- a/arch/mips/loongson64/Kconfig +++ b/arch/mips/loongson64/Kconfig @@ -130,14 +130,6 @@ config LOONGSON_UART_BASE default y depends on EARLY_PRINTK || SERIAL_8250 -config SWIOTLB - bool "Soft IOMMU Support for All-Memory DMA" - default y - depends on CPU_LOONGSON3 - select DMA_DIRECT_OPS - select NEED_SG_DMA_LENGTH - select NEED_DMA_MAP_STATE - config PHYS48_TO_HT40 bool default y if CPU_LOONGSON3 diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index b85a537421b8..beb28153fcb2 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -474,15 +474,6 @@ config MPROFILE_KERNEL depends on PPC64 && CPU_LITTLE_ENDIAN def_bool !DISABLE_MPROFILE_KERNEL -config SWIOTLB - bool "SWIOTLB support" - default n - ---help--- - Support for IO bounce buffering for systems without an IOMMU. - This allows us to DMA to the full physical address space on - platforms where the size of a physical address is larger - than the bus address. Not all platforms support this. - config HOTPLUG_CPU bool "Support for enabling/disabling CPUs" depends on SMP && (PPC_PSERIES || \ diff --git a/arch/unicore32/mm/Kconfig b/arch/unicore32/mm/Kconfig index 1d9fed0ada71..82759b6aba67 100644 --- a/arch/unicore32/mm/Kconfig +++ b/arch/unicore32/mm/Kconfig @@ -39,8 +39,3 @@ config CPU_TLB_SINGLE_ENTRY_DISABLE default y help Say Y here to disable the TLB single entry operations. - -config SWIOTLB - def_bool y - select DMA_DIRECT_OPS - select NEED_SG_DMA_LENGTH diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index a95eb9ef3311..063bef5f830f 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -24,6 +24,7 @@ config X86_64 depends on 64BIT # Options that are inherently 64-bit kernel only: select ARCH_HAS_GIGANTIC_PAGE if (MEMORY_ISOLATION && COMPACTION) || CMA + select ARCH_HAS_SWIOTLB select ARCH_SUPPORTS_INT128 select ARCH_USE_CMPXCHG_LOCKREF select HAVE_ARCH_SOFT_DIRTY @@ -676,6 +677,7 @@ config STA2X11 bool "STA2X11 Companion Chip Support" depends on X86_32_NON_STANDARD && PCI select ARCH_HAS_PHYS_TO_DMA + select ARCH_HAS_SWIOTLB select X86_DEV_DMA_OPS select X86_DMA_REMAP select SWIOTLB @@ -915,17 +917,6 @@ config CALGARY_IOMMU_ENABLED_BY_DEFAULT Calgary anyway, pass 'iommu=calgary' on the kernel command line. If unsure, say Y. -# need this always selected by IOMMU for the VIA workaround -config SWIOTLB - def_bool y if X86_64 - select NEED_DMA_MAP_STATE - ---help--- - Support for software bounce buffers used on x86-64 systems - which don't have a hardware IOMMU. Using this PCI devices - which can only access 32-bits of memory can be used on systems - with more than 3 GB of memory. - If unsure, say Y. - config MAXSMP bool "Enable Maximum number of SMP Processors and NUMA Nodes" depends on X86_64 && SMP && DEBUG_KERNEL @@ -1447,6 +1438,7 @@ config HIGHMEM config X86_PAE bool "PAE (Physical Address Extension) Support" depends on X86_32 && !HIGHMEM4G + select ARCH_HAS_SWIOTLB select PHYS_ADDR_T_64BIT select SWIOTLB ---help--- diff --git a/lib/Kconfig b/lib/Kconfig index 1f12faf03819..01a37920949c 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -451,6 +451,21 @@ config DMA_VIRT_OPS depends on HAS_DMA && (!64BIT || ARCH_DMA_ADDR_T_64BIT) default n +config ARCH_HAS_SWIOTLB + bool + +config SWIOTLB + bool "SWIOTLB support" + default ARCH_HAS_SWIOTLB + select DMA_DIRECT_OPS + select NEED_DMA_MAP_STATE + select NEED_SG_DMA_LENGTH + ---help--- + Support for IO bounce buffering for systems without an IOMMU. + This allows us to DMA to the full physical address space on + platforms where the size of a physical address is larger + than the bus address. If unsure, say Y. + config CHECK_SIGNATURE bool -- 2.17.0
