diff options
| author | Mark Nelson <markn@au1.ibm.com> | 2008-07-05 05:05:45 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-09 16:30:44 +1000 |
| commit | 3a4c6f0b1540811110a59112b4c83f55c229728c (patch) | |
| tree | 6d2cc36af1100103ceb649a6fbdf8b2a9b526947 /include/asm-powerpc/dma-mapping.h | |
| parent | 7e5f8105030038de94b44a74cd7b64dd000830fc (diff) | |
| download | op-kernel-dev-3a4c6f0b1540811110a59112b4c83f55c229728c.zip op-kernel-dev-3a4c6f0b1540811110a59112b4c83f55c229728c.tar.gz | |
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>
Diffstat (limited to 'include/asm-powerpc/dma-mapping.h')
| -rw-r--r-- | include/asm-powerpc/dma-mapping.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-powerpc/dma-mapping.h b/include/asm-powerpc/dma-mapping.h index de13950..74c5497 100644 --- a/include/asm-powerpc/dma-mapping.h +++ b/include/asm-powerpc/dma-mapping.h @@ -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 */ |
