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authorChristoph Hellwig <hch@lst.de>2018-01-09 18:30:23 +0300
committerChristoph Hellwig <hch@lst.de>2018-01-15 11:35:06 +0300
commit002e67454f61bb67d8071ac4d0cacb86a01d18e0 (patch)
treeef15f40222144d529cc2e2b2bfdb72fad7fd4510 /arch
parentc5cd037d1c8044fbd131c57822a67a1576eb16e9 (diff)
downloadlinux-002e67454f61bb67d8071ac4d0cacb86a01d18e0.tar.xz
dma-direct: rename dma_noop to dma_direct
The trivial direct mapping implementation already does a virtual to physical translation which isn't strictly a noop, and will soon learn to do non-direct but linear physical to dma translations through the device offset and a few small tricks. Rename it to a better fitting name. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Vladimir Murzin <vladimir.murzin@arm.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/Kconfig2
-rw-r--r--arch/arm/include/asm/dma-mapping.h2
-rw-r--r--arch/arm/mm/dma-mapping-nommu.c8
-rw-r--r--arch/m32r/Kconfig2
-rw-r--r--arch/riscv/Kconfig2
-rw-r--r--arch/s390/Kconfig2
6 files changed, 9 insertions, 9 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 00d889a37965..430a0aa710d6 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -25,7 +25,7 @@ config ARM
select CLONE_BACKWARDS
select CPU_PM if (SUSPEND || CPU_IDLE)
select DCACHE_WORD_ACCESS if HAVE_EFFICIENT_UNALIGNED_ACCESS
- select DMA_NOOP_OPS if !MMU
+ select DMA_DIRECT_OPS if !MMU
select EDAC_SUPPORT
select EDAC_ATOMIC_SCRUB
select GENERIC_ALLOCATOR
diff --git a/arch/arm/include/asm/dma-mapping.h b/arch/arm/include/asm/dma-mapping.h
index e5d9020c9ee1..8436f6ade57d 100644
--- a/arch/arm/include/asm/dma-mapping.h
+++ b/arch/arm/include/asm/dma-mapping.h
@@ -18,7 +18,7 @@ extern const struct dma_map_ops arm_coherent_dma_ops;
static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
{
- return IS_ENABLED(CONFIG_MMU) ? &arm_dma_ops : &dma_noop_ops;
+ return IS_ENABLED(CONFIG_MMU) ? &arm_dma_ops : &dma_direct_ops;
}
#ifdef __arch_page_to_dma
diff --git a/arch/arm/mm/dma-mapping-nommu.c b/arch/arm/mm/dma-mapping-nommu.c
index 6db5fc26d154..4d8042521e89 100644
--- a/arch/arm/mm/dma-mapping-nommu.c
+++ b/arch/arm/mm/dma-mapping-nommu.c
@@ -22,7 +22,7 @@
#include "dma.h"
/*
- * dma_noop_ops is used if
+ * dma_direct_ops is used if
* - MMU/MPU is off
* - cpu is v7m w/o cache support
* - device is coherent
@@ -39,7 +39,7 @@ static void *arm_nommu_dma_alloc(struct device *dev, size_t size,
unsigned long attrs)
{
- const struct dma_map_ops *ops = &dma_noop_ops;
+ const struct dma_map_ops *ops = &dma_direct_ops;
void *ret;
/*
@@ -70,7 +70,7 @@ static void arm_nommu_dma_free(struct device *dev, size_t size,
void *cpu_addr, dma_addr_t dma_addr,
unsigned long attrs)
{
- const struct dma_map_ops *ops = &dma_noop_ops;
+ const struct dma_map_ops *ops = &dma_direct_ops;
if (attrs & DMA_ATTR_NON_CONSISTENT) {
ops->free(dev, size, cpu_addr, dma_addr, attrs);
@@ -213,7 +213,7 @@ EXPORT_SYMBOL(arm_nommu_dma_ops);
static const struct dma_map_ops *arm_nommu_get_dma_map_ops(bool coherent)
{
- return coherent ? &dma_noop_ops : &arm_nommu_dma_ops;
+ return coherent ? &dma_direct_ops : &arm_nommu_dma_ops;
}
void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig
index 498398d915c1..dd84ee194579 100644
--- a/arch/m32r/Kconfig
+++ b/arch/m32r/Kconfig
@@ -19,7 +19,7 @@ config M32R
select MODULES_USE_ELF_RELA
select HAVE_DEBUG_STACKOVERFLOW
select CPU_NO_EFFICIENT_FFS
- select DMA_NOOP_OPS
+ select DMA_DIRECT_OPS
select ARCH_NO_COHERENT_DMA_MMAP if !MMU
config SBUS
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 2c6adf12713a..865e14f50c14 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -83,7 +83,7 @@ config PGTABLE_LEVELS
config HAVE_KPROBES
def_bool n
-config DMA_NOOP_OPS
+config DMA_DIRECT_OPS
def_bool y
menu "Platform type"
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 829c67986db7..9376637229c9 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -140,7 +140,7 @@ config S390
select HAVE_DEBUG_KMEMLEAK
select HAVE_DMA_API_DEBUG
select HAVE_DMA_CONTIGUOUS
- select DMA_NOOP_OPS
+ select DMA_DIRECT_OPS
select HAVE_DYNAMIC_FTRACE
select HAVE_DYNAMIC_FTRACE_WITH_REGS
select HAVE_EFFICIENT_UNALIGNED_ACCESS