Add support for the Sun Enterprise 450

Reduce the size of a GENERIC kernel by ~190k
Remove the nasty pointer/bus_space_handle_t casts
Adds debug bus_space code including the ability to trace
    bus operations (it actually works now).

The following rules are now followed (and verfified by the debug
code):

1.  A "bus_space_handle_t" may only be used with the
    "bus_space_tag_t" that created it.
2.  Only "bus_space_map()" may create "bus_space_handle_t"s.
3.  A "bus_space_handle_t" may not be modified after it has
    been created (other than being destroyed by "bus_space_unmap()").


Thanks to help from mcbride, marc, jason, drahn, to anyone that might
have slipped my mind at the moment.

ok jason@, deraadt@

1 files changed, 4 insertions, 5 deletions

diff --git a/sys/dev/sbus/lebuffer.c b/sys/dev/sbus/lebuffer.c
index a73dd9bf5b5..6a8618914b5 100644
--- a/sys/dev/sbus/lebuffer.c
+++ b/sys/dev/sbus/lebuffer.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: lebuffer.c,v 1.2 2002/05/13 18:16:38 jason Exp $	*/
+/*	$OpenBSD: lebuffer.c,v 1.3 2003/02/17 01:29:21 henric Exp $	*/
 /*	$NetBSD: lebuffer.c,v 1.12 2002/03/11 16:00:57 pk Exp $ */
 
 /*-
@@ -99,7 +99,7 @@ lebufattach(parent, self, aux)
 	struct lebuf_softc *sc = (void *)self;
 	int node;
 	int sbusburst;
-	bus_space_tag_t sbt;
+	struct sparc_bus_space_tag *sbt;
 	bus_space_handle_t bh;
 
 	sc->sc_bustag = sa->sa_bustag;
@@ -140,13 +140,12 @@ lebufattach(parent, self, aux)
 	sbus_establish(&sc->sc_sd, &sc->sc_dev);
 
 	/* Allocate a bus tag */
-	sbt = (bus_space_tag_t) malloc(sizeof(struct sparc_bus_space_tag), 
-	    M_DEVBUF, M_NOWAIT);
+	sbt = malloc(sizeof(*sbt), M_DEVBUF, M_NOWAIT);
 	if (sbt == NULL) {
 		printf("%s: attach: out of memory\n", self->dv_xname);
 		return;
 	}
-	bzero(sbt, sizeof(struct sparc_bus_space_tag));
+	bzero(sbt, sizeof(*sbt));
 
 	printf(": %dK memory\n", sc->sc_bufsiz / 1024);