[PATCH 11/15] dma-mapping: always build the direct mapping code

Christoph Hellwig
2018-12-07T19:07:16Z

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 <hch@lst.de>
---
arch/alpha/Kconfig | 1 -
arch/arc/Kconfig | 1 -
arch/arm/Kconfig | 1 -
arch/arm64/Kconfig | 1 -
arch/c6x/Kconfig | 1 -
arch/csky/Kconfig | 1 -
arch/h8300/Kconfig | 1 -
arch/hexagon/Kconfig | 1 -
arch/m68k/Kconfig | 1 -
arch/microblaze/Kconfig | 1 -
arch/mips/Kconfig | 1 -
arch/nds32/Kconfig | 1 -
arch/nios2/Kconfig | 1 -
arch/openrisc/Kconfig | 1 -
arch/parisc/Kconfig | 1 -
arch/riscv/Kconfig | 1 -
arch/s390/Kconfig | 1 -
arch/sh/Kconfig | 1 -
arch/sparc/Kconfig | 1 -
arch/unicore32/Kconfig | 1 -
arch/x86/Kconfig | 1 -
arch/xtensa/Kconfig | 1 -
kernel/dma/Kconfig | 7 -------
kernel/dma/Makefile | 3 +--
24 files changed, 1 insertion(+), 31 deletions(-)

diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index a7e748a46c18..5da6ff54b3e7 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -203,7 +203,6 @@ config ALPHA_EIGER
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
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index fd48d698da29..7deaabeb531a 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -17,7 +17,6 @@ config ARC
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
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a858ee791ef0..586fc30b23bd 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -30,7 +30,6 @@ config ARM
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
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 06cf0ef24367..2092080240b0 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -80,7 +80,6 @@ config ARM64
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
diff --git a/arch/c6x/Kconfig b/arch/c6x/Kconfig
index 84420109113d..456e154674d1 100644
--- a/arch/c6x/Kconfig
+++ b/arch/c6x/Kconfig
@@ -9,7 +9,6 @@ config C6X
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
diff --git a/arch/csky/Kconfig b/arch/csky/Kconfig
index ea74f3a9eeaf..37bed8aadf95 100644
--- a/arch/csky/Kconfig
+++ b/arch/csky/Kconfig
@@ -7,7 +7,6 @@ config CSKY
select COMMON_CLK
select CLKSRC_MMIO
select CLKSRC_OF
- select DMA_DIRECT_OPS
select DMA_DIRECT_REMAP
select IRQ_DOMAIN
select HANDLE_DOMAIN_IRQ
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index d19c6b16cd5d..6472a0685470 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -22,7 +22,6 @@ config H8300
select HAVE_ARCH_KGDB
select HAVE_ARCH_HASH
select CPU_NO_EFFICIENT_FFS
- select DMA_DIRECT_OPS

config CPU_BIG_ENDIAN
def_bool y
diff --git a/arch/hexagon/Kconfig b/arch/hexagon/Kconfig
index 2b688af379e6..d71036c598de 100644
--- a/arch/hexagon/Kconfig
+++ b/arch/hexagon/Kconfig
@@ -31,7 +31,6 @@ config HEXAGON
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.
diff --git a/arch/m68k/Kconfig b/arch/m68k/Kconfig
index 1bc9f1ba759a..8a5868e9a3a0 100644
--- a/arch/m68k/Kconfig
+++ b/arch/m68k/Kconfig
@@ -26,7 +26,6 @@ config M68K
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
diff --git a/arch/microblaze/Kconfig b/arch/microblaze/Kconfig
index effed2efd306..eda9e2315ef5 100644
--- a/arch/microblaze/Kconfig
+++ b/arch/microblaze/Kconfig
@@ -12,7 +12,6 @@ config MICROBLAZE
select TIMER_OF
select CLONE_BACKWARDS3
select COMMON_CLK
- select DMA_DIRECT_OPS
select GENERIC_ATOMIC64
select GENERIC_CLOCKEVENTS
select GENERIC_CPU_DEVICES
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 8272ea4c7264..2993aa9842c0 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -16,7 +16,6 @@ config MIPS
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
diff --git a/arch/nds32/Kconfig b/arch/nds32/Kconfig
index 7a04adacb2f0..1af6bbae7220 100644
--- a/arch/nds32/Kconfig
+++ b/arch/nds32/Kconfig
@@ -11,7 +11,6 @@ config NDS32
select CLKSRC_MMIO
select CLONE_BACKWARDS
select COMMON_CLK
- select DMA_DIRECT_OPS
select GENERIC_ATOMIC64
select GENERIC_CPU_DEVICES
select GENERIC_CLOCKEVENTS
diff --git a/arch/nios2/Kconfig b/arch/nios2/Kconfig
index 7e95506e957a..f6c4b0f49997 100644
--- a/arch/nios2/Kconfig
+++ b/arch/nios2/Kconfig
@@ -4,7 +4,6 @@ config NIOS2
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
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig
index 285f7d05c8ed..d0feebad5a8f 100644
--- a/arch/openrisc/Kconfig
+++ b/arch/openrisc/Kconfig
@@ -7,7 +7,6 @@
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
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
index 428ee50fc3db..6e1b71da0e71 100644
--- a/arch/parisc/Kconfig
+++ b/arch/parisc/Kconfig
@@ -185,7 +185,6 @@ config PA11
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
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 55da93f4e818..51d89c4b1dca 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -19,7 +19,6 @@ config RISCV
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
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 5624e8607054..21d271d04ca6 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -139,7 +139,6 @@ config S390
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
diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
index f82a4da7adf3..10fd4e9c454b 100644
--- a/arch/sh/Kconfig
+++ b/arch/sh/Kconfig
@@ -7,7 +7,6 @@ config SUPERH
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
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 8853b6ceae17..f5bb9ded1d18 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -48,7 +48,6 @@ config SPARC
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
diff --git a/arch/unicore32/Kconfig b/arch/unicore32/Kconfig
index a4c05159dca5..2681027d7bff 100644
--- a/arch/unicore32/Kconfig
+++ b/arch/unicore32/Kconfig
@@ -4,7 +4,6 @@ config UNICORE32
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
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index adc845b66f01..c14d4a35be13 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -89,7 +89,6 @@ config X86
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
diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index 75488b606edc..36338e7564a3 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -9,7 +9,6 @@ config XTENSA
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
diff --git a/kernel/dma/Kconfig b/kernel/dma/Kconfig
index 41c3b1df70eb..ca88b867e7fe 100644
--- a/kernel/dma/Kconfig
+++ b/kernel/dma/Kconfig
@@ -35,13 +35,8 @@ config ARCH_HAS_DMA_COHERENT_TO_PFN
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
@@ -49,7 +44,6 @@ config DMA_VIRT_OPS

config SWIOTLB
bool
- select DMA_DIRECT_OPS
select NEED_DMA_MAP_STATE

config DMA_REMAP
@@ -58,5 +52,4 @@ config DMA_REMAP

config DMA_DIRECT_REMAP
bool
- depends on DMA_DIRECT_OPS
select DMA_REMAP
diff --git a/kernel/dma/Makefile b/kernel/dma/Makefile
index f4feeceb8020..a626f643cd63 100644
--- a/kernel/dma/Makefile
+++ b/kernel/dma/Makefile
@@ -1,9 +1,8 @@
# 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
--
2.19.1