diff --git a/sys/arch/arm/ixp12x0/ixp12x0.c b/sys/arch/arm/ixp12x0/ixp12x0.c
index fd01bd82c4b3..1c70427a12b5 100644
--- a/sys/arch/arm/ixp12x0/ixp12x0.c
+++ b/sys/arch/arm/ixp12x0/ixp12x0.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: ixp12x0.c,v 1.10 2003/07/13 02:11:58 igy Exp $ */
+/*	$NetBSD: ixp12x0.c,v 1.11 2003/07/13 07:15:22 igy Exp $ */
 /*
  * Copyright (c) 2002, 2003
  *	Ichiro FUKUHARA <ichiro@ichiro.org>.
@@ -33,7 +33,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ixp12x0.c,v 1.10 2003/07/13 02:11:58 igy Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ixp12x0.c,v 1.11 2003/07/13 07:15:22 igy Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -60,26 +60,24 @@ ixp12x0_attach(sc)
 	ixp12x0_softc = sc;
 
 	printf("\n");
+
+	sc->sc_iot = &ixp12x0_bs_tag;
+
 	/*
-	 * Subregion for PCI Configuration Spase Registers
+	 * Mapping for PCI Configuration Spase Registers
 	 */
-	if (bus_space_subregion(sc->sc_iot, sc->sc_ioh,
-		IXP12X0_PCI_VBASE - IXP12X0_IO_VBASE,
-		IXP12X0_PCI_SIZE, &sc->sc_pci_ioh))
-			panic("%s: unable to subregion PCI registers",
-			       sc->sc_dev.dv_xname); 
+	if (bus_space_map(sc->sc_iot, IXP12X0_PCI_HWBASE, IXP12X0_PCI_SIZE,
+			  0, &sc->sc_pci_ioh))
+		panic("%s: unable to map PCI registers", sc->sc_dev.dv_xname); 
+	if (bus_space_map(sc->sc_iot, IXP12X0_PCI_TYPE0_HWBASE,
+			  IXP12X0_PCI_TYPE0_SIZE, 0, &sc->sc_conf0_ioh))
+		panic("%s: unable to map PCI Configutation 0\n",
+		      sc->sc_dev.dv_xname);
+	if (bus_space_map(sc->sc_iot, IXP12X0_PCI_TYPE1_HWBASE,
+			  IXP12X0_PCI_TYPE0_SIZE, 1, &sc->sc_conf1_ioh))
+		panic("%s: unable to map PCI Configutation 1\n",
+		      sc->sc_dev.dv_xname);
 
-	if (bus_space_subregion(sc->sc_iot, sc->sc_ioh,
-		IXP12X0_PCI_TYPE0_VBASE - IXP12X0_IO_VBASE,
-		IXP12X0_PCI_TYPE0_SIZE, &sc->sc_conf0_ioh))
-			panic("%s: unable to subregion PCI Configutation 0\n",
-			       sc->sc_dev.dv_xname);
-
-	if (bus_space_subregion(sc->sc_iot, sc->sc_ioh,
-		IXP12X0_PCI_TYPE1_VBASE - IXP12X0_IO_VBASE,
-		IXP12X0_PCI_TYPE1_SIZE, &sc->sc_conf1_ioh))
-			panic("%s: unable to subregion PCI Configutation 1\n",
-			       sc->sc_dev.dv_xname);
 	/*
 	 * PCI bus reset
 	 */
diff --git a/sys/arch/arm/ixp12x0/ixp12x0_io.c b/sys/arch/arm/ixp12x0/ixp12x0_io.c
index d33cec859376..0ea271a3543d 100644
--- a/sys/arch/arm/ixp12x0/ixp12x0_io.c
+++ b/sys/arch/arm/ixp12x0/ixp12x0_io.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: ixp12x0_io.c,v 1.8 2003/07/13 02:11:58 igy Exp $ */
+/*	$NetBSD: ixp12x0_io.c,v 1.9 2003/07/13 07:15:22 igy Exp $ */
 
 /*
  * Copyright (c) 2002, 2003
@@ -34,7 +34,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ixp12x0_io.c,v 1.8 2003/07/13 02:11:58 igy Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ixp12x0_io.c,v 1.9 2003/07/13 07:15:22 igy Exp $");
 
 /*
  * bus_space I/O functions for ixp12x0
@@ -134,15 +134,6 @@ struct bus_space ixp12x0_bs_tag = {
 	bs_notimpl_bs_c_8,
 };
 
-void
-ixp12x0_bs_init(bs, cookie)
-	bus_space_tag_t bs;
-	void *cookie;
-{
-	*bs = ixp12x0_bs_tag;
-	bs->bs_cookie = cookie;
-}
-
 /* Common routines */
 
 int
diff --git a/sys/arch/arm/ixp12x0/ixp12x0var.h b/sys/arch/arm/ixp12x0/ixp12x0var.h
index c64cc3c7ddab..a13a125bd4d4 100644
--- a/sys/arch/arm/ixp12x0/ixp12x0var.h
+++ b/sys/arch/arm/ixp12x0/ixp12x0var.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: ixp12x0var.h,v 1.4 2003/07/13 02:11:58 igy Exp $ */
+/*	$NetBSD: ixp12x0var.h,v 1.5 2003/07/13 07:15:23 igy Exp $ */
 /*
  * Copyright (c) 2002
  *	Ichiro FUKUHARA <ichiro@ichiro.org>.
@@ -103,9 +103,6 @@ struct pmap_ent {
 
 extern struct bus_space	ixp12x0_bs_tag;
 
-void	ixp12x0_bs_init(bus_space_tag_t, void *);
-void	ixp12x0_io_bs_init(bus_space_tag_t, void *);
-void	ixp12x0_mem_bs_init(bus_space_tag_t, void *);
 void	ixp12x0_pci_init(pci_chipset_tag_t, void *);
 void	ixp12x0_pci_dma_init(struct ixp12x0_softc *);
 void	ixp12x0_attach(struct ixp12x0_softc *);
diff --git a/sys/arch/evbarm/ixm1200/ixp12x0_mainbus.c b/sys/arch/evbarm/ixm1200/ixp12x0_mainbus.c
index 8bdb94b2954a..60e814b0a02f 100644
--- a/sys/arch/evbarm/ixm1200/ixp12x0_mainbus.c
+++ b/sys/arch/evbarm/ixm1200/ixp12x0_mainbus.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: ixp12x0_mainbus.c,v 1.5 2003/03/25 06:53:16 igy Exp $ */
+/*	$NetBSD: ixp12x0_mainbus.c,v 1.6 2003/07/13 07:15:23 igy Exp $ */
 /*
  * Copyright (c) 2002
  *	Ichiro FUKUHARA <ichiro@ichiro.org>.
@@ -33,7 +33,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ixp12x0_mainbus.c,v 1.5 2003/03/25 06:53:16 igy Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ixp12x0_mainbus.c,v 1.6 2003/07/13 07:15:23 igy Exp $");
 
 /*
  * front-end for the ixp12x0 I/O Processor.
@@ -73,10 +73,6 @@ ixp12x0_mainbus_attach(struct device *parent, struct device *self, void *aux)
 {
 	struct ixp12x0_softc *sc = (void *) self;
 
-	ixp12x0_bs_init(&ixp12x0_bs_tag, sc);
-	sc->sc_iot = &ixp12x0_bs_tag;
-	sc->sc_ioh = IXP12X0_IO_VBASE;
-
 	/*
 	 * Initialize the interrupt part of our PCI chipset tag
 	 */