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swiotlb: Use physical addresses instead of virtual in swiotlb_tbl_sync_single

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This change makes it so that the sync functionality also uses physical
addresses.  This helps to further reduce the use of virt_to_phys and
phys_to_virt functions.

In order to clarify things since we now have 2 physical addresses in use
inside of swiotlb_tbl_sync_single I am renaming phys to orig_addr, and
dma_addr to tlb_addr.  This way is should be clear that orig_addr is
contained within io_orig_addr and tlb_addr is an address within the
io_tlb_addr buffer.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
This commit is contained in:
Alexander Duyck
2012-10-15 10:19:49 -07:00
committed by Konrad Rzeszutek Wilk
parent 61ca08c322
commit fbfda893eb
3 changed files with 14 additions and 14 deletions
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3
include/linux/swiotlb.h
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@@ -47,7 +47,8 @@ extern void swiotlb_tbl_unmap_single(struct device *hwdev,
phys_addr_t tlb_addr,
size_t size, enum dma_data_direction dir);
extern void swiotlb_tbl_sync_single(struct device *hwdev, char *dma_addr,
extern void swiotlb_tbl_sync_single(struct device *hwdev,
phys_addr_t tlb_addr,
size_t size, enum dma_data_direction dir,
enum dma_sync_target target);