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swiotlb: change swiotlb_bus_to[phys,virt] prototypes

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Add a hwdev argument that is needed on some architectures
in order to access a per-device offset that is taken into
account when producing a physical address (also needed to
get from bus address to virtual address because the physical
address is an intermediate step).

Also make swiotlb_bus_to_virt weak so architectures can
override it.

Signed-off-by: Becky Bruce <[email protected]>
Acked-by: FUJITA Tomonori <[email protected]>
Signed-off-by: Kumar Gala <[email protected]>
Cc: [email protected]
Cc: [email protected]
LKML-Reference: <[email protected]>
Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Becky Bruce 2009-04-08 09:09:21 -05:00 • committed by Ingo Molnar
commit 42d7c5e353
3 changed files with 8 additions and 7 deletions
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10
lib/swiotlb.c
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@ -129,7 +129,7 @@ dma_addr_t __weak swiotlb_phys_to_bus(struct device *hwdev, phys_addr_t paddr)
return paddr;
}
phys_addr_t __weak swiotlb_bus_to_phys(dma_addr_t baddr)
phys_addr_t __weak swiotlb_bus_to_phys(struct device *hwdev, dma_addr_t baddr)
{
return baddr;
}
@ -140,9 +140,9 @@ static dma_addr_t swiotlb_virt_to_bus(struct device *hwdev,
return swiotlb_phys_to_bus(hwdev, virt_to_phys(address));
}
static void *swiotlb_bus_to_virt(dma_addr_t address)
void * __weak swiotlb_bus_to_virt(struct device *hwdev, dma_addr_t address)
{
return phys_to_virt(swiotlb_bus_to_phys(address));
return phys_to_virt(swiotlb_bus_to_phys(hwdev, address));
}
int __weak swiotlb_arch_address_needs_mapping(struct device *hwdev,
@ -691,7 +691,7 @@ EXPORT_SYMBOL_GPL(swiotlb_map_page);
static void unmap_single(struct device *hwdev, dma_addr_t dev_addr,
size_t size, int dir)
{
char *dma_addr = swiotlb_bus_to_virt(dev_addr);
char *dma_addr = swiotlb_bus_to_virt(hwdev, dev_addr);
BUG_ON(dir == DMA_NONE);
@ -728,7 +728,7 @@ static void
swiotlb_sync_single(struct device *hwdev, dma_addr_t dev_addr,
size_t size, int dir, int target)
{
char *dma_addr = swiotlb_bus_to_virt(dev_addr);
char *dma_addr = swiotlb_bus_to_virt(hwdev, dev_addr);
BUG_ON(dir == DMA_NONE);