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yaml
---
r: 144075
b: refs/heads/master
c: ec40f95
h: refs/heads/master
i:
  144073: bb55c3f
  144071: 93bab33
v: v3
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Greg Ungerer committed Apr 22, 2009
1 parent 34e67bb commit 775a820
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Showing 3 changed files with 36 additions and 4 deletions.
2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: 830c072b1ea0078396c42db120452fc36516ed1d
refs/heads/master: ec40f95db753d3bfdbcc43b1505ecf7980cb6492
1 change: 1 addition & 0 deletions trunk/arch/m68knommu/Kconfig
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Expand Up @@ -16,6 +16,7 @@ config MMU

config NO_DMA
bool
depends on !COLDFIRE
default y

config FPU
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37 changes: 34 additions & 3 deletions trunk/arch/m68knommu/kernel/dma.c
Original file line number Diff line number Diff line change
Expand Up @@ -7,10 +7,9 @@

#include <linux/types.h>
#include <linux/mm.h>
#include <linux/string.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <asm/io.h>
#include <asm/cacheflush.h>

void *dma_alloc_coherent(struct device *dev, size_t size,
dma_addr_t *dma_handle, gfp_t gfp)
Expand All @@ -36,7 +35,39 @@ void dma_free_coherent(struct device *dev, size_t size,
free_pages((unsigned long)vaddr, get_order(size));
}

void dma_sync_single_for_cpu(struct device *dev, dma_addr_t handle, size_t size, enum dma_data_direction dir)
void dma_sync_single_for_device(struct device *dev, dma_addr_t handle,
size_t size, enum dma_data_direction dir)
{
switch (dir) {
case DMA_TO_DEVICE:
flush_dcache_range(handle, size);
break;
case DMA_FROM_DEVICE:
/* Should be clear already */
break;
default:
if (printk_ratelimit())
printk("dma_sync_single_for_device: unsupported dir %u\n", dir);
break;
}
}

EXPORT_SYMBOL(dma_sync_single_for_device);
dma_addr_t dma_map_single(struct device *dev, void *addr, size_t size,
enum dma_data_direction dir)
{
dma_addr_t handle = virt_to_phys(addr);
flush_dcache_range(handle, size);
return handle;
}
EXPORT_SYMBOL(dma_map_single);

dma_addr_t dma_map_page(struct device *dev, struct page *page,
unsigned long offset, size_t size,
enum dma_data_direction dir)
{
dma_addr_t handle = page_to_phys(page) + offset;
dma_sync_single_for_device(dev, handle, size, dir);
return handle;
}
EXPORT_SYMBOL(dma_map_page);

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