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dma-mapping: dma-mapping.h: add dma_set_coherent_mask

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dma_set_coherent_mask corresponds to pci_set_consistent_dma_mask.  This is
necessary to move to the generic device model DMA API from the PCI bus
specific API in the long term.

dma_set_coherent_mask works in the exact same way that
pci_set_consistent_dma_mask does.  So this patch also changes
pci_set_consistent_dma_mask to call dma_set_coherent_mask.

Signed-off-by: FUJITA Tomonori <[email protected]>
Cc: James Bottomley <[email protected]>
Cc: David S. Miller <[email protected]>
Cc: Jesse Barnes <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Russell King <[email protected]>
Cc: Greg KH <[email protected]>
Cc: Kay Sievers <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
FUJITA Tomonori 2010-03-10 15:23:39 -08:00 • committed by Linus Torvalds
commit 6a1961f49e
3 changed files with 21 additions and 4 deletions
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10
Documentation/DMA-API.txt
View file

@ -167,6 +167,16 @@ parameters if it is.
Returns: 0 if successful and a negative error if not.
int
dma_set_coherent_mask(struct device *dev, u64 mask)
int
pci_set_consistent_dma_mask(struct pci_device *dev, u64 mask)
Checks to see if the mask is possible and updates the device
parameters if it is.
Returns: 0 if successful and a negative error if not.
u64
dma_get_required_mask(struct device *dev)