-/*
- * Free a DMA mapping.
- */
-void gart_unmap_single(struct device *dev, dma_addr_t dma_addr,
- size_t size, int direction)
-{
- unsigned long iommu_page;
- int npages;
- int i;
-
- if (dma_addr < iommu_bus_base + EMERGENCY_PAGES*PAGE_SIZE ||
- dma_addr >= iommu_bus_base + iommu_size)
- return;
- iommu_page = (dma_addr - iommu_bus_base)>>PAGE_SHIFT;
- npages = to_pages(dma_addr, size);
- for (i = 0; i < npages; i++) {
- iommu_gatt_base[iommu_page + i] = gart_unmapped_entry;
- CLEAR_LEAK(iommu_page + i);
- }
- free_iommu(iommu_page, npages);
-}
-