diff -urNp ref/include/asm-ia64/dma.h 2.4.20pre7aa1/include/asm-ia64/dma.h
--- ref/include/asm-ia64/dma.h	Tue May  1 19:35:30 2001
+++ 2.4.20pre7aa1/include/asm-ia64/dma.h	Wed Sep 18 00:04:04 2002
@@ -12,6 +12,10 @@
 
 extern unsigned long MAX_DMA_ADDRESS;
 
+/* These are in kernel/dma.c: */
+extern int request_dma(unsigned int dmanr, const char * device_id);	/* reserve a DMA channel */
+extern void free_dma(unsigned int dmanr);	/* release it again */
+
 #ifdef CONFIG_PCI
   extern int isa_dma_bridge_buggy;
 #else
diff -urNp ref/include/asm-ia64/pci.h 2.4.20pre7aa1/include/asm-ia64/pci.h
--- ref/include/asm-ia64/pci.h	Fri Sep 13 06:13:54 2002
+++ 2.4.20pre7aa1/include/asm-ia64/pci.h	Wed Sep 18 00:04:42 2002
@@ -60,6 +60,11 @@ pcibios_penalize_isa_irq (int irq)
 #define pci_unmap_len(ptr, len_name)		((ptr)->len_name)
 #define pci_unmap_len_set(ptr, len_name, val)	(((ptr)->len_name) = (val))
 
+/* The PCI address space does equal the physical memory address space.
+   The networking and block device layers use this boolean for bounce buffer
+   decisions.  */
+#define PCI_DMA_BUS_IS_PHYS  (1)
+
 #define pci_map_page(dev,pg,off,size,dir)				\
 	pci_map_single((dev), page_address(pg) + (off), (size), (dir))
 #define pci_unmap_page(dev,dma_addr,size,dir)				\
diff -urNp ref/include/asm-ia64/types.h 2.4.20pre7aa1/include/asm-ia64/types.h
--- ref/include/asm-ia64/types.h	Sat Apr 22 00:21:24 2000
+++ 2.4.20pre7aa1/include/asm-ia64/types.h	Wed Sep 18 00:04:04 2002
@@ -63,6 +63,7 @@ typedef __u64 u64;
 /* DMA addresses are 64-bits wide, in general.  */
 
 typedef u64 dma_addr_t;
+typedef u64 dma64_addr_t;
 
 # endif /* __KERNEL__ */
 #endif /* !__ASSEMBLY__ */