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powerpc: move device_to_mask() to dma-mapping.h 

Move device_to_mask() to dma-mapping.h because we need to use it from
outside dma_64.c in a later patch.

Signed-off-by: Mark Nelson <markn@au1.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Mark Nelson 2008-07-05 05:05:45 +10:00 committed by Benjamin Herrenschmidt
parent 7e5f810503
commit 3a4c6f0b15
2 changed files with 9 additions and 9 deletions
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9
arch/powerpc/kernel/dma_64.c
View File

@ -15,15 +15,6 @@
* Generic iommu implementation
*/
static inline unsigned long device_to_mask(struct device *dev)
{
if (dev->dma_mask && *dev->dma_mask)
return *dev->dma_mask;
/* Assume devices without mask can take 32 bit addresses */
return 0xfffffffful;
}
/* Allocates a contiguous real buffer and creates mappings over it.
* Returns the virtual address of the buffer and sets dma_handle
* to the dma address (mapping) of the first page.

9
include/asm-powerpc/dma-mapping.h
View File

@ -45,6 +45,15 @@ extern void __dma_sync_page(struct page *page, unsigned long offset,
#endif /* ! CONFIG_NOT_COHERENT_CACHE */
#ifdef CONFIG_PPC64
static inline unsigned long device_to_mask(struct device *dev)
{
if (dev->dma_mask && *dev->dma_mask)
return *dev->dma_mask;
/* Assume devices without mask can take 32 bit addresses */
return 0xfffffffful;
}
/*
* DMA operations are abstracted for G5 vs. i/pSeries, PCI vs. VIO
*/