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| author | Jens Axboe <jens.axboe@oracle.com> | 2007-10-16 12:29:34 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2007-10-16 12:29:34 +0200 |
| commit | 3eed13fd933dbb81db12f7cdec6de9268c4443b5 (patch) | |
| tree | c16913706acffd4a0b29ec12cd68906b708c9a8a /lib/swiotlb.c | |
| parent | a39d113936370ba524fa9e34d6954c3625c8aa64 (diff) | |
| parent | 2c941a204070ab32d92d40318a3196a7fb994c00 (diff) | |
Merge branch 'sglist-arch' into for-linus
Diffstat (limited to 'lib/swiotlb.c')
| -rw-r--r-- | lib/swiotlb.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/lib/swiotlb.c b/lib/swiotlb.c index 30c1400e749..c419ecf334c 100644 --- a/lib/swiotlb.c +++ b/lib/swiotlb.c @@ -677,16 +677,17 @@ swiotlb_sync_single_range_for_device(struct device *hwdev, dma_addr_t dev_addr, * same here. */ int -swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nelems, +swiotlb_map_sg(struct device *hwdev, struct scatterlist *sgl, int nelems, int dir) { + struct scatterlist *sg; void *addr; dma_addr_t dev_addr; int i; BUG_ON(dir == DMA_NONE); - for (i = 0; i < nelems; i++, sg++) { + for_each_sg(sgl, sg, nelems, i) { addr = SG_ENT_VIRT_ADDRESS(sg); dev_addr = virt_to_bus(addr); if (swiotlb_force || address_needs_mapping(hwdev, dev_addr)) { @@ -696,7 +697,7 @@ swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nelems, to do proper error handling. */ swiotlb_full(hwdev, sg->length, dir, 0); swiotlb_unmap_sg(hwdev, sg - i, i, dir); - sg[0].dma_length = 0; + sgl[0].dma_length = 0; return 0; } sg->dma_address = virt_to_bus(map); @@ -712,19 +713,21 @@ swiotlb_map_sg(struct device *hwdev, struct scatterlist *sg, int nelems, * concerning calls here are the same as for swiotlb_unmap_single() above. */ void -swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nelems, +swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sgl, int nelems, int dir) { + struct scatterlist *sg; int i; BUG_ON(dir == DMA_NONE); - for (i = 0; i < nelems; i++, sg++) + for_each_sg(sgl, sg, nelems, i) { if (sg->dma_address != SG_ENT_PHYS_ADDRESS(sg)) unmap_single(hwdev, bus_to_virt(sg->dma_address), sg->dma_length, dir); else if (dir == DMA_FROM_DEVICE) dma_mark_clean(SG_ENT_VIRT_ADDRESS(sg), sg->dma_length); + } } /* @@ -735,19 +738,21 @@ swiotlb_unmap_sg(struct device *hwdev, struct scatterlist *sg, int nelems, * and usage. */ static void -swiotlb_sync_sg(struct device *hwdev, struct scatterlist *sg, +swiotlb_sync_sg(struct device *hwdev, struct scatterlist *sgl, int nelems, int dir, int target) { + struct scatterlist *sg; int i; BUG_ON(dir == DMA_NONE); - for (i = 0; i < nelems; i++, sg++) + for_each_sg(sgl, sg, nelems, i) { if (sg->dma_address != SG_ENT_PHYS_ADDRESS(sg)) sync_single(hwdev, bus_to_virt(sg->dma_address), sg->dma_length, dir, target); else if (dir == DMA_FROM_DEVICE) dma_mark_clean(SG_ENT_VIRT_ADDRESS(sg), sg->dma_length); + } } void |