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From: Marcel Moolenaar <marcel@FreeBSD.org>
Subject: PERFORCE change 21645 for review
To: Perforce Change Reviews <perforce@freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=21645

Change 21645 by marcel@marcel_nfs on 2002/11/28 11:11:21

	Implement bus_space_subregion in the same way as done for i386.
	We use this in the vga(4) driver to create a handle for that
	part of the frame buffer that is visible.

Affected files ...

.. //depot/projects/ia64/sys/ia64/include/bus.h#4 edit

Differences ...

==== //depot/projects/ia64/sys/ia64/include/bus.h#4 (text+ko) ====

@@ -131,9 +131,14 @@
  * Get a new handle for a subregion of an already-mapped area of bus space.
  */
 
-int	bus_space_subregion(bus_space_tag_t t, bus_space_handle_t bsh,
-			    bus_size_t offset, bus_size_t size,
-			    bus_space_handle_t *nbshp);
+static __inline int
+bus_space_subregion(bus_space_tag_t t, bus_space_handle_t bsh,
+		    bus_size_t offset, bus_size_t size,
+		    bus_space_handle_t *nbshp)
+{
+	*nbshp = bsh + offset;
+	return (0);
+}
 
 /*
  * Allocate a region of memory that is accessible to devices in bus space.

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