+/* SG-list versions of pci_dma_sync functions. */
+extern void
+pci_dma_sync_sg_for_cpu (struct pci_dev *dev,
+ struct scatterlist *sg, int sg_len,
+ int dir);
+extern void
+pci_dma_sync_sg_for_device (struct pci_dev *dev,
+ struct scatterlist *sg, int sg_len,
+ int dir);
+
+#define pci_map_page(dev, page, offs, size, dir) \
+ pci_map_single(dev, (page_address(page) + (offs)), size, dir)
+#define pci_unmap_page(dev,addr,sz,dir) \
+ pci_unmap_single(dev, addr, sz, dir)
+
+/* Test for pci_map_single or pci_map_page having generated an error. */
+static inline int
+pci_dma_mapping_error (dma_addr_t dma_addr)
+{
+ return dma_addr == 0;
+}
+