diff options
| author |   Alexander Duyck <alexander.h.duyck@intel.com> | 2012-10-15 10:19:44 -0700 |
|---|---|---|
| committer |   Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> | 2012-10-30 09:32:07 -0400 |
| commit | 61ca08c3220032dd88815b3465d56cb779258168 (patch) | |
| tree | b126015d4fd76ff1e4b936097877e734aa19746b /include/linux/swiotlb.h | |
| parent | swiotlb: Return physical addresses when calling swiotlb_tbl_map_single (diff) | |
| download | linux-dev-61ca08c3220032dd88815b3465d56cb779258168.tar.xz linux-dev-61ca08c3220032dd88815b3465d56cb779258168.zip | |
swiotlb: Use physical addresses for swiotlb_tbl_unmap_single
This change makes it so that the unmap 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_unmap_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>
Diffstat (limited to 'include/linux/swiotlb.h')
| -rw-r--r-- | include/linux/swiotlb.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index 1995f3e04fed..291643c6b88b 100644 --- a/include/linux/swiotlb.h +++ b/include/linux/swiotlb.h @@ -43,7 +43,8 @@ extern phys_addr_t swiotlb_tbl_map_single(struct device *hwdev, phys_addr_t phys, size_t size, enum dma_data_direction dir); -extern void swiotlb_tbl_unmap_single(struct device *hwdev, char *dma_addr, +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, |