sparc: move of_device common code to of_device_common

This patch moves code common to of_device_32.c and of_device_64.c into
of_device_common.h and of_device_common.c.

The only functional difference is in sparc32 where of_bus_default_map is
used in place of of_bus_sbus_map because they are equivelent.

There is still room for further code consolidation with some minor
refactoring.

Boot tested on sparc32 and compile tested on sparc64.

Signed-off-by: Robert Reif <reif@earthlink.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 36 insertions, 0 deletions

diff --git a/arch/sparc/kernel/of_device_common.h b/arch/sparc/kernel/of_device_common.h
new file mode 100644
index 000000000000..cdfd23992841
--- /dev/null
+++ b/arch/sparc/kernel/of_device_common.h
@@ -0,0 +1,36 @@
+#ifndef _OF_DEVICE_COMMON_H
+#define _OF_DEVICE_COMMON_H
+
+static inline u64 of_read_addr(const u32 *cell, int size)
+{
+        u64 r = 0;
+        while (size--)
+                r = (r << 32) | *(cell++);
+        return r;
+}
+
+void of_bus_default_count_cells(struct device_node *dev, int *addrc,
+                                int *sizec);
+int of_out_of_range(const u32 *addr, const u32 *base,
+                    const u32 *size, int na, int ns);
+int of_bus_default_map(u32 *addr, const u32 *range, int na, int ns, int pna);
+unsigned long of_bus_default_get_flags(const u32 *addr, unsigned long flags);
+
+int of_bus_sbus_match(struct device_node *np);
+void of_bus_sbus_count_cells(struct device_node *child, int *addrc, int *sizec);
+
+/* Max address size we deal with */
+#define OF_MAX_ADDR_CELLS       4
+
+struct of_bus {
+        const char      *name;
+        const char      *addr_prop_name;
+        int             (*match)(struct device_node *parent);
+        void            (*count_cells)(struct device_node *child,
+                                       int *addrc, int *sizec);
+        int             (*map)(u32 *addr, const u32 *range,
+                               int na, int ns, int pna);
+        unsigned long   (*get_flags)(const u32 *addr, unsigned long);
+};
+
+#endif /* _OF_DEVICE_COMMON_H */