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| author |   Lu Baolu <baolu.lu@linux.intel.com> | 2019-09-06 14:14:48 +0800 |
|---|---|---|
| committer |   Joerg Roedel <jroedel@suse.de> | 2019-09-11 12:34:29 +0200 |
| commit | 3fc1ca00653db6371585e3c21c4b873b2f20e60a (patch) | |
| tree | 0c6b5431d51319a078b036284c81ed12b7f55b54 /drivers | |
| parent | iommu/vt-d: Fix wrong analysis whether devices share the same bus (diff) | |
| download | linux-dev-3fc1ca00653db6371585e3c21c4b873b2f20e60a.tar.xz linux-dev-3fc1ca00653db6371585e3c21c4b873b2f20e60a.zip | |
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 'drivers')
| -rw-r--r-- | drivers/xen/swiotlb-xen.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index ae1df496bf38..adcabd9473eb 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -386,8 +386,8 @@ static dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page, */ trace_swiotlb_bounced(dev, dev_addr, size, swiotlb_force); - map = swiotlb_tbl_map_single(dev, start_dma_addr, phys, size, dir, - attrs); + map = swiotlb_tbl_map_single(dev, start_dma_addr, phys, + size, size, dir, attrs); if (map == (phys_addr_t)DMA_MAPPING_ERROR) return DMA_MAPPING_ERROR; @@ -397,7 +397,7 @@ static dma_addr_t xen_swiotlb_map_page(struct device *dev, struct page *page, * Ensure that the address returned is DMA'ble */ if (unlikely(!dma_capable(dev, dev_addr, size))) { - swiotlb_tbl_unmap_single(dev, map, size, dir, + swiotlb_tbl_unmap_single(dev, map, size, size, dir, attrs | DMA_ATTR_SKIP_CPU_SYNC); return DMA_MAPPING_ERROR; } @@ -433,7 +433,7 @@ static void xen_unmap_single(struct device *hwdev, dma_addr_t dev_addr, /* NOTE: We use dev_addr here, not paddr! */ if (is_xen_swiotlb_buffer(dev_addr)) - swiotlb_tbl_unmap_single(hwdev, paddr, size, dir, attrs); + swiotlb_tbl_unmap_single(hwdev, paddr, size, size, dir, attrs); } static void xen_swiotlb_unmap_page(struct device *hwdev, dma_addr_t dev_addr, |