summaryrefslogtreecommitdiff
path: root/include/linux/swiotlb.h
diff options
context:
space:
mode:
authorLu Baolu <baolu.lu@linux.intel.com>2019-09-06 09:14:48 +0300
committerJoerg Roedel <jroedel@suse.de>2019-09-11 13:34:29 +0300
commit3fc1ca00653db6371585e3c21c4b873b2f20e60a (patch)
tree0c6b5431d51319a078b036284c81ed12b7f55b54 /include/linux/swiotlb.h
parent2c70010867f164d1b30e787e360e05d10cc40046 (diff)
downloadlinux-3fc1ca00653db6371585e3c21c4b873b2f20e60a.tar.xz
swiotlb: Split size parameter to map/unmap APIs
This splits the size parameter to swiotlb_tbl_map_single() and swiotlb_tbl_unmap_single() into an alloc_size and a mapping_size parameter, where the latter one is rounded up to the iommu page size. Suggested-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'include/linux/swiotlb.h')
-rw-r--r--include/linux/swiotlb.h8
1 files changed, 6 insertions, 2 deletions
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index 361f62bb4a8e..cde3dc18e21a 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -46,13 +46,17 @@ enum dma_sync_target {
extern phys_addr_t swiotlb_tbl_map_single(struct device *hwdev,
dma_addr_t tbl_dma_addr,
- phys_addr_t phys, size_t size,
+ phys_addr_t phys,
+ size_t mapping_size,
+ size_t alloc_size,
enum dma_data_direction dir,
unsigned long attrs);
extern void swiotlb_tbl_unmap_single(struct device *hwdev,
phys_addr_t tlb_addr,
- size_t size, enum dma_data_direction dir,
+ size_t mapping_size,
+ size_t alloc_size,
+ enum dma_data_direction dir,
unsigned long attrs);
extern void swiotlb_tbl_sync_single(struct device *hwdev,