Messages in this thread Patch in this message | | | From | Kumar Gala <> | Subject | [PATCH 4/7] swiotlb: Allow arch override of address_needs_mapping | Date | Wed, 8 Apr 2009 09:09:18 -0500 |
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From: Becky Bruce <beckyb@kernel.crashing.org>
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> --- lib/swiotlb.c | 10 ++++++++-- 1 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/lib/swiotlb.c b/lib/swiotlb.c index e8a47c8..d81afab 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) -- 1.6.0.6
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