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x86/swiotlb: add default phys<->bus conversion

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Xen will override these later on.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Ian Campbell 2008-12-16 12:17:37 -08:00 committed by Ingo Molnar
parent cfb80c9eae
commit 1d32251e84
1 changed files with 10 additions and 0 deletions
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10
arch/x86/kernel/pci-swiotlb_64.c
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@ -23,6 +23,16 @@ void *swiotlb_alloc(unsigned order, unsigned long nslabs)
return (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN, order); return (void *)__get_free_pages(GFP_DMA | __GFP_NOWARN, order);
} }
dma_addr_t swiotlb_phys_to_bus(phys_addr_t paddr)
{
return paddr;
}
phys_addr_t swiotlb_bus_to_phys(dma_addr_t baddr)
{
return baddr;
}
static dma_addr_t static dma_addr_t
swiotlb_map_single_phys(struct device *hwdev, phys_addr_t paddr, size_t size, swiotlb_map_single_phys(struct device *hwdev, phys_addr_t paddr, size_t size,
int direction) int direction)