diff options
Diffstat (limited to 'arch/sparc/mm/io-unit.c')
| -rw-r--r-- | arch/sparc/mm/io-unit.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/arch/sparc/mm/io-unit.c b/arch/sparc/mm/io-unit.c index 2088d292c6e5..91be13935d40 100644 --- a/arch/sparc/mm/io-unit.c +++ b/arch/sparc/mm/io-unit.c @@ -158,22 +158,22 @@ static dma_addr_t iounit_map_page(struct device *dev, struct page *page, return ret; } -static int iounit_map_sg(struct device *dev, struct scatterlist *sg, int sz, +static int iounit_map_sg(struct device *dev, struct scatterlist *sgl, int nents, enum dma_data_direction dir, unsigned long attrs) { struct iounit_struct *iounit = dev->archdata.iommu; + struct scatterlist *sg; unsigned long flags; + int i; /* FIXME: Cache some resolved pages - often several sg entries are to the same page */ spin_lock_irqsave(&iounit->lock, flags); - while (sz != 0) { - --sz; + for_each_sg(sgl, sg, nents, i) { sg->dma_address = iounit_get_area(iounit, (unsigned long) sg_virt(sg), sg->length); sg->dma_length = sg->length; - sg = sg_next(sg); } spin_unlock_irqrestore(&iounit->lock, flags); - return sz; + return nents; } static void iounit_unmap_page(struct device *dev, dma_addr_t vaddr, size_t len, @@ -191,22 +191,21 @@ static void iounit_unmap_page(struct device *dev, dma_addr_t vaddr, size_t len, spin_unlock_irqrestore(&iounit->lock, flags); } -static void iounit_unmap_sg(struct device *dev, struct scatterlist *sg, int sz, - enum dma_data_direction dir, unsigned long attrs) +static void iounit_unmap_sg(struct device *dev, struct scatterlist *sgl, + int nents, enum dma_data_direction dir, unsigned long attrs) { struct iounit_struct *iounit = dev->archdata.iommu; - unsigned long flags; - unsigned long vaddr, len; + unsigned long flags, vaddr, len; + struct scatterlist *sg; + int i; spin_lock_irqsave(&iounit->lock, flags); - while (sz != 0) { - --sz; + for_each_sg(sgl, sg, nents, i) { len = ((sg->dma_address & ~PAGE_MASK) + sg->length + (PAGE_SIZE-1)) >> PAGE_SHIFT; vaddr = (sg->dma_address - IOUNIT_DMA_BASE) >> PAGE_SHIFT; IOD(("iounit_release %08lx-%08lx\n", (long)vaddr, (long)len+vaddr)); for (len += vaddr; vaddr < len; vaddr++) clear_bit(vaddr, iounit->bmap); - sg = sg_next(sg); } spin_unlock_irqrestore(&iounit->lock, flags); } |