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| author | Becky Bruce <beckyb@kernel.crashing.org> | 2009-04-08 09:09:18 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-08 16:18:36 +0200 |
| commit | ef5722f698bde01cfec2b98fff733a48663ebf55 (patch) | |
| tree | 80eba1195866f2643d1343b318d9caa2b81aa347 /lib/swiotlb.c | |
| parent | dd6b02fe427f30520d0adc94aa52352367227873 (diff) | |
| download | lwn-ef5722f698bde01cfec2b98fff733a48663ebf55.tar.gz lwn-ef5722f698bde01cfec2b98fff733a48663ebf55.zip | |
swiotlb: allow arch override of address_needs_mapping
Some architectures require additional checking to determine
if a device can dma to an address and need to provide their
own address_needs_mapping..
Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Cc: jeremy@goop.org
Cc: ian.campbell@citrix.com
LKML-Reference: <1239199761-22886-5-git-send-email-galak@kernel.crashing.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'lib/swiotlb.c')
| -rw-r--r-- | lib/swiotlb.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c index e8a47c8cf77e..d81afab85167 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -145,6 +145,12 @@ static void *swiotlb_bus_to_virt(dma_addr_t address) return phys_to_virt(swiotlb_bus_to_phys(address)); } +int __weak swiotlb_arch_address_needs_mapping(struct device *hwdev, + dma_addr_t addr, size_t size) +{ + return !is_buffer_dma_capable(dma_get_mask(hwdev), addr, size); +} + int __weak swiotlb_arch_range_needs_mapping(phys_addr_t paddr, size_t size) { return 0; @@ -309,10 +315,10 @@ cleanup1: return -ENOMEM; } -static int +static inline int address_needs_mapping(struct device *hwdev, dma_addr_t addr, size_t size) { - return !is_buffer_dma_capable(dma_get_mask(hwdev), addr, size); + return swiotlb_arch_address_needs_mapping(hwdev, addr, size); } static inline int range_needs_mapping(phys_addr_t paddr, size_t size) |