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dma-direct: rename dma_noop to dma_direct

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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>
This commit is contained in:
Christoph Hellwig
2018-01-09 16:30:23 +01:00
parent c5cd037d1c
commit 002e67454f
12 changed files with 29 additions and 34 deletions
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8
arch/arm/mm/dma-mapping-nommu.c
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@@ -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,