dma-mapping: always build the direct mapping code

All architectures except for sparc64 use the dma-direct code in some
form, and even for sparc64 we had the discussion of a direct mapping
mode a while ago. In preparation for directly calling the direct
mapping code don't bother having it optionally but always build the
code in. This is a minor hardship for some powerpc and arm configs
that don't pull it in yet (although they should in a relase ot two),
and sparc64 which currently doesn't need it at all, but it will
reduce the ifdef mess we'd otherwise need significantly.

Signed-off-by: Christoph Hellwig <[e-mail]>
Acked-by: Jesper Dangaard Brouer <[e-mail]>
Tested-by: Jesper Dangaard Brouer <[e-mail]>
Tested-by: Tony Luck <[e-mail]>

arch/alpha/Kconfig

···
 config ALPHA_JENSEN
 	bool "Jensen"
 	depends on BROKEN
-	select DMA_DIRECT_OPS
 	help
 	  DEC PC 150 AXP (aka Jensen): This is a very old Digital system - one
 	  of the first-generation Alpha systems. A number of these systems

arch/arc/Kconfig

···
 	select BUILDTIME_EXTABLE_SORT
 	select CLONE_BACKWARDS
 	select COMMON_CLK
-	select DMA_DIRECT_OPS
 	select GENERIC_ATOMIC64 if !ISA_ARCV2 || !(ARC_HAS_LL64 && ARC_HAS_LLSC)
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_FIND_FIRST_BIT

arch/arm/Kconfig

···
 	select CLONE_BACKWARDS
 	select CPU_PM if (SUSPEND || CPU_IDLE)
 	select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
-	select DMA_DIRECT_OPS if !MMU
 	select DMA_REMAP if MMU
 	select EDAC_SUPPORT
 	select EDAC_ATOMIC_SCRUB

arch/arm64/Kconfig

···
 	select CPU_PM if (SUSPEND || CPU_IDLE)
 	select CRC32
 	select DCACHE_WORD_ACCESS
-	select DMA_DIRECT_OPS
 	select DMA_DIRECT_REMAP
 	select EDAC_SUPPORT
 	select FRAME_POINTER

arch/c6x/Kconfig

···
 	select ARCH_HAS_SYNC_DMA_FOR_CPU
 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
 	select CLKDEV_LOOKUP
-	select DMA_DIRECT_OPS
 	select GENERIC_ATOMIC64
 	select GENERIC_IRQ_SHOW
 	select HAVE_ARCH_TRACEHOOK

arch/csky/Kconfig

···
 	select COMMON_CLK
 	select CLKSRC_MMIO
 	select CLKSRC_OF
-	select DMA_DIRECT_OPS
 	select DMA_DIRECT_REMAP
 	select IRQ_DOMAIN
 	select HANDLE_DOMAIN_IRQ

arch/h8300/Kconfig

···
 	select HAVE_ARCH_KGDB
 	select HAVE_ARCH_HASH
 	select CPU_NO_EFFICIENT_FFS
-	select DMA_DIRECT_OPS
 
 config CPU_BIG_ENDIAN
 	def_bool y

arch/hexagon/Kconfig

···
 	select GENERIC_CLOCKEVENTS_BROADCAST
 	select MODULES_USE_ELF_RELA
 	select GENERIC_CPU_DEVICES
-	select DMA_DIRECT_OPS
 	---help---
 	  Qualcomm Hexagon is a processor architecture designed for high
 	  performance and low power across a wide variety of applications.

arch/m68k/Kconfig

···
 	select MODULES_USE_ELF_RELA
 	select OLD_SIGSUSPEND3
 	select OLD_SIGACTION
-	select DMA_DIRECT_OPS if HAS_DMA
 	select ARCH_DISCARD_MEMBLOCK
 
 config CPU_BIG_ENDIAN

arch/microblaze/Kconfig

···
 	select TIMER_OF
 	select CLONE_BACKWARDS3
 	select COMMON_CLK
-	select DMA_DIRECT_OPS
 	select GENERIC_ATOMIC64
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_CPU_DEVICES

arch/mips/Kconfig

···
 	select BUILDTIME_EXTABLE_SORT
 	select CLONE_BACKWARDS
 	select CPU_PM if CPU_IDLE
-	select DMA_DIRECT_OPS
 	select GENERIC_ATOMIC64 if !64BIT
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_CMOS_UPDATE

arch/nds32/Kconfig

···
 	select CLKSRC_MMIO
 	select CLONE_BACKWARDS
 	select COMMON_CLK
-	select DMA_DIRECT_OPS
 	select GENERIC_ATOMIC64
 	select GENERIC_CPU_DEVICES
 	select GENERIC_CLOCKEVENTS

arch/nios2/Kconfig

···
 	select ARCH_HAS_SYNC_DMA_FOR_CPU
 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
 	select ARCH_NO_SWAP
-	select DMA_DIRECT_OPS
 	select TIMER_OF
 	select GENERIC_ATOMIC64
 	select GENERIC_CLOCKEVENTS

arch/openrisc/Kconfig

···
 config OPENRISC
 	def_bool y
 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
-	select DMA_DIRECT_OPS
 	select OF
 	select OF_EARLY_FLATTREE
 	select IRQ_DOMAIN

arch/parisc/Kconfig

···
 	depends on PA7000 || PA7100LC || PA7200 || PA7300LC
 	select ARCH_HAS_SYNC_DMA_FOR_CPU
 	select ARCH_HAS_SYNC_DMA_FOR_DEVICE
-	select DMA_DIRECT_OPS
 	select DMA_NONCOHERENT_CACHE_SYNC
 
 config PREFETCH

arch/riscv/Kconfig

···
 	select ARCH_WANT_FRAME_POINTERS
 	select CLONE_BACKWARDS
 	select COMMON_CLK
-	select DMA_DIRECT_OPS
 	select GENERIC_CLOCKEVENTS
 	select GENERIC_CPU_DEVICES
 	select GENERIC_IRQ_SHOW

arch/s390/Kconfig

···
 	select HAVE_COPY_THREAD_TLS
 	select HAVE_DEBUG_KMEMLEAK
 	select HAVE_DMA_CONTIGUOUS
-	select DMA_DIRECT_OPS
 	select HAVE_DYNAMIC_FTRACE
 	select HAVE_DYNAMIC_FTRACE_WITH_REGS
 	select HAVE_EFFICIENT_UNALIGNED_ACCESS

arch/sh/Kconfig

···
 	select ARCH_NO_COHERENT_DMA_MMAP if !MMU
 	select HAVE_PATA_PLATFORM
 	select CLKDEV_LOOKUP
-	select DMA_DIRECT_OPS
 	select HAVE_IDE if HAS_IOPORT_MAP
 	select HAVE_MEMBLOCK_NODE_MAP
 	select ARCH_DISCARD_MEMBLOCK

arch/sparc/Kconfig

···
 config SPARC32
 	def_bool !64BIT
 	select ARCH_HAS_SYNC_DMA_FOR_CPU
-	select DMA_DIRECT_OPS
 	select GENERIC_ATOMIC64
 	select CLZ_TAB
 	select HAVE_UID16

arch/unicore32/Kconfig

···
 	select ARCH_HAS_DEVMEM_IS_ALLOWED
 	select ARCH_MIGHT_HAVE_PC_PARPORT
 	select ARCH_MIGHT_HAVE_PC_SERIO
-	select DMA_DIRECT_OPS
 	select HAVE_GENERIC_DMA_COHERENT
 	select HAVE_KERNEL_GZIP
 	select HAVE_KERNEL_BZIP2

arch/x86/Kconfig

···
 	select CLOCKSOURCE_VALIDATE_LAST_CYCLE
 	select CLOCKSOURCE_WATCHDOG
 	select DCACHE_WORD_ACCESS
-	select DMA_DIRECT_OPS
 	select EDAC_ATOMIC_SCRUB
 	select EDAC_SUPPORT
 	select GENERIC_CLOCKEVENTS

arch/xtensa/Kconfig

···
 	select BUILDTIME_EXTABLE_SORT
 	select CLONE_BACKWARDS
 	select COMMON_CLK
-	select DMA_DIRECT_OPS
 	select DMA_REMAP if MMU
 	select GENERIC_ATOMIC64
 	select GENERIC_CLOCKEVENTS

kernel/dma/Kconfig

···
 config ARCH_HAS_DMA_MMAP_PGPROT
 	bool
 
-config DMA_DIRECT_OPS
-	bool
-	depends on HAS_DMA
-
 config DMA_NONCOHERENT_CACHE_SYNC
 	bool
-	depends on DMA_DIRECT_OPS
 
 config DMA_VIRT_OPS
 	bool
···
 
 config SWIOTLB
 	bool
-	select DMA_DIRECT_OPS
 	select NEED_DMA_MAP_STATE
 
 config DMA_REMAP
···
 
 config DMA_DIRECT_REMAP
 	bool
-	depends on DMA_DIRECT_OPS
 	select DMA_REMAP

kernel/dma/Makefile

···
 # SPDX-License-Identifier: GPL-2.0
 
-obj-$(CONFIG_HAS_DMA)			+= mapping.o
+obj-$(CONFIG_HAS_DMA)			+= mapping.o direct.o
 obj-$(CONFIG_DMA_CMA)			+= contiguous.o
 obj-$(CONFIG_HAVE_GENERIC_DMA_COHERENT) += coherent.o
-obj-$(CONFIG_DMA_DIRECT_OPS)		+= direct.o
 obj-$(CONFIG_DMA_VIRT_OPS)		+= virt.o
 obj-$(CONFIG_DMA_API_DEBUG)		+= debug.o
 obj-$(CONFIG_SWIOTLB)			+= swiotlb.o