regions: add more helpers

Fill out functions to get the offset and size for both
regions and region_devices. Additionally add a helper for
memory mapping an entire region_device.

Change-Id: I8896eaf5b29e4a67470f4adc6f5b541566cb93b5
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/10215
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>

src/include/region.h

@@ -93,11 +93,32 @@ struct region_device {
 		},					\
 	}
 
+static inline size_t region_offset(const struct region *r)
+{
+	return r->offset;
+}
+
 static inline size_t region_sz(const struct region *r)
 {
 	return r->size;
 }
 
+static inline size_t region_device_sz(const struct region_device *rdev)
+{
+	return region_sz(&rdev->region);
+}
+
+static inline size_t region_device_offset(const struct region_device *rdev)
+{
+	return region_offset(&rdev->region);
+}
+
+/* Memory map entire region device. Same semantics as rdev_mmap() above. */
+static inline void *rdev_mmap_full(const struct region_device *rd)
+{
+	return rdev_mmap(rd, 0, region_device_sz(rd));
+}
+
 struct mem_region_device {
 	char *base;
 	struct region_device rdev;

src/lib/region.c

@@ -20,11 +20,6 @@
 #include <region.h>
 #include <string.h>
 
-static inline size_t region_offset(const struct region *r)
-{
-	return r->offset;
-}
-
 static inline size_t region_end(const struct region *r)
 {
 	return region_sz(r) + region_offset(r);