[PATCH] powerpc: Add of_parse_dma_window()
Add a function for generic parsing of dma-window properties (ie,
ibm,dma-window and ibm,my-dma-window) of pci and virtual device nodes.
This function will also be used by cell.
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/include/asm-powerpc/prom.h b/include/asm-powerpc/prom.h
index 97ef1cd..c79d58a 100644
--- a/include/asm-powerpc/prom.h
+++ b/include/asm-powerpc/prom.h
@@ -230,6 +230,12 @@
extern int of_pci_address_to_resource(struct device_node *dev, int bar,
struct resource *r);
+/* Parse the ibm,dma-window property of an OF node into the busno, phys and
+ * size parameters.
+ */
+void of_parse_dma_window(struct device_node *dn, unsigned char *dma_window_prop,
+ unsigned long *busno, unsigned long *phys, unsigned long *size);
+
extern void kdump_move_device_tree(void);
#endif /* __KERNEL__ */