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x86: add free_coherent dma_ops callback to Calgary IOMMU driver

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Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Acked-by: Muli Ben-Yehuda <muli@il.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Joerg Roedel 2008-08-19 16:32:41 +02:00 • committed by Ingo Molnar
parent 43a5a5a09b
commit e4ad68b651
1 changed files with 14 additions and 0 deletions
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14
arch/x86/kernel/pci-calgary_64.c
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@ -511,8 +511,22 @@ error:
return ret; return ret;
} }
static void calgary_free_coherent(struct device *dev, size_t size,
void *vaddr, dma_addr_t dma_handle)
{
unsigned int npages;
struct iommu_table *tbl = find_iommu_table(dev);
size = PAGE_ALIGN(size);
npages = size >> PAGE_SHIFT;
iommu_free(tbl, dma_handle, npages);
free_pages((unsigned long)vaddr, get_order(size));
}
static struct dma_mapping_ops calgary_dma_ops = { static struct dma_mapping_ops calgary_dma_ops = {
.alloc_coherent = calgary_alloc_coherent, .alloc_coherent = calgary_alloc_coherent,
.free_coherent = calgary_free_coherent,
.map_single = calgary_map_single, .map_single = calgary_map_single,
.unmap_single = calgary_unmap_single, .unmap_single = calgary_unmap_single,
.map_sg = calgary_map_sg, .map_sg = calgary_map_sg,