add pcxu tlb handlers and cpu probing

add u2/uturn ioa driver in dumb mode now
enable pcxu/pcxw support

7 files changed, 282 insertions, 69 deletions

diff --git a/sys/arch/hppa/conf/GENERIC b/sys/arch/hppa/conf/GENERIC
index 786154d3983..a6c2d424576 100644
--- a/sys/arch/hppa/conf/GENERIC
+++ b/sys/arch/hppa/conf/GENERIC
@@ -1,4 +1,4 @@
-#	$OpenBSD: GENERIC,v 1.56 2004/08/19 08:13:05 mickey Exp $
+#	$OpenBSD: GENERIC,v 1.57 2004/09/15 21:32:42 mickey Exp $
 
 # Machine architecture; required by config(8)
 machine		hppa
@@ -11,9 +11,9 @@ option		HP7100_CPU		# PCXT
 option		HP7200_CPU		# PCXT'
 option		HP7100LC_CPU		# PCXL
 option		HP7300LC_CPU		# PCXL2
-#option		HP8000_CPU		# PCXU  (in 32bit mode)
-#option		HP8200_CPU		# PCXU2 (in 32bit mode)
-#option		HP8500_CPU		# PCXW  (in 32bit mode)
+option		HP8000_CPU		# PCXU  (in 32bit mode)
+option		HP8200_CPU		# PCXU2 (in 32bit mode)
+option		HP8500_CPU		# PCXW  (in 32bit mode)
 #option		USE_HPT
 
 option		FPEMUL
@@ -37,16 +37,22 @@ cpu*	at mainbus0 irq 31	# HP PA-RISC cpu
 #fpu*	at mainbus0		# HP PA-RISC fpu (iv N/A)
 #pmu*	at mainbus0 irq 29	# HP PA-RISC perfomance monitor unit
 phantomas0 at mainbus0		# Phantom PseudoBC GSC+ Port
+uturn0	at mainbus0		# U2/UTurn Runway IOA
+uturn1	at mainbus0
 
 lasi0	at mainbus0 offset 0x100000 irq 28	# LASI host adapter
 lasi0	at mainbus0 offset 0xfd00000 irq 28	# LASI on C1[01]0, J2[01]0
-lasi0	at phantomas0 offset 0xfd00000 irq 28	# LASI on [ABC]*
+lasi0	at phantomas0 offset 0xfd00000 irq 28	# LASI on [AB]*
+lasi0	at uturn? offset 0xfd00000 irq 28	# LASI on [CJ]*
 lasi1	at mainbus0 offset 0x500000 irq 27	# 712 GIO card
 asp*	at mainbus0 irq 28	# this one comes w/ Viper and LEDs
 wax*	at mainbus0 irq 24	# Wax may host EISA as well
 mongoose* at mainbus0 irq 17	# EISA Bus Adapter (i82350 or TI???)
 #vmeb*	at mainbus0 irq ?	# VME bus adapter
-dino*	at phantomas? irq 26	# PCI bus bridge
+dino0	at phantomas? irq 26	# PCI bus bridge on [AB]*
+dino1	at phantomas? irq 25
+dino0	at uturn0 irq 26	# PCI bus bridge on [CJ]*
+dino1	at uturn1 irq 25
 pci*	at dino?
 option	PCIVERBOSE
 #pckbc0	at dino? irq 9
@@ -124,6 +130,7 @@ sti0	at mainbus0 irq 11	# [H]CRX-{8,24,48}[Z] graphics
 sti0	at phantomas0 irq 11	# builtin graphics on BC*
 sti1	at mainbus0 irq 12
 sti1	at phantomas0 irq 12
+#sti*	at pci?			# EG-PCI, FX*
 
 #medusa* at mainbus? irq 4	# FDDI
 #venus* at mainbus? irq 5	# ATM J2498A/J3420A
diff --git a/sys/arch/hppa/conf/RAMDISK b/sys/arch/hppa/conf/RAMDISK
index 5a755bbcc1b..41079f82b41 100644
--- a/sys/arch/hppa/conf/RAMDISK
+++ b/sys/arch/hppa/conf/RAMDISK
@@ -1,31 +1,31 @@
-#	$OpenBSD: RAMDISK,v 1.36 2004/08/19 08:13:05 mickey Exp $
+#	$OpenBSD: RAMDISK,v 1.37 2004/09/15 21:32:42 mickey Exp $
 #
 # Diskless kernel config
 #
 
 # Machine architecture; required by config(8)
-machine	hppa
+machine		hppa
 
-option		DDB		# in-kernel debugger
-option		DIAGNOSTIC	# internal consistency checks
+option		DDB			# in-kernel debugger
+option		DIAGNOSTIC		# internal consistency checks
 
-option		FFS		# UFS
-option		NFSCLIENT	# Network File System client
-option		CD9660		# ISO 9660 + Rock Ridge file system
-option		FDESC		# /dev/fd
-option		FIFO		# FIFOs; RECOMMENDED
-option		INET		# IP + ICMP + TCP + UDP
-option		INET6		# IPv6 (needs INET)
+option		FFS			# UFS
+option		NFSCLIENT		# Network File System client
+option		CD9660			# ISO 9660 + Rock Ridge file system
+option		FDESC			# /dev/fd
+option		FIFO			# FIFOs; RECOMMENDED
+option		INET			# IP + ICMP + TCP + UDP
+option		INET6			# IPv6 (needs INET)
 
 # Support for various CPU types
-option	HP7000_CPU		# PCXS
-option	HP7100_CPU	# PCXT
-option	HP7200_CPU	# PCXT'
-option	HP7100LC_CPU	# PCXL
-option	HP7300LC_CPU	# PCXL2
-#option	HP8000_CPU	# PCXU  (in 32bit mode)
-#option	HP8200_CPU	# PCXU2 (in 32bit mode)
-#option	HP8500_CPU	# PCXW  (in 32bit mode)
+option		HP7000_CPU		# PCXS
+option		HP7100_CPU		# PCXT
+option		HP7200_CPU		# PCXT'
+option		HP7100LC_CPU		# PCXL
+option		HP7300LC_CPU		# PCXL2
+option		HP8000_CPU		# PCXU  (in 32bit mode)
+option		HP8200_CPU		# PCXU2 (in 32bit mode)
+option		HP8500_CPU		# PCXW  (in 32bit mode)
 
 option		FPEMUL
 option		USELEDS		# blink 'em
@@ -51,16 +51,22 @@ cpu*	at mainbus0 irq 31	# HP PA-RISC cpu
 #fpu*	at mainbus0		# HP PA-RISC fpu (iv N/A)
 #pmu*	at mainbus0 irq 29	# HP PA-RISC perfomance monitor unit
 phantomas0 at mainbus0		# Phantom PseudoBC GSC+ Port
+uturn0	at mainbus0		# U2/UTurn Runway IOA
+uturn1	at mainbus0
 
 lasi0	at mainbus0 offset 0x100000 irq 28	# LASI host adapter
 lasi0	at mainbus0 offset 0xfd00000 irq 28	# LASI on C1[01]0, J2[01]0
-lasi0	at phantomas0 offset 0xfd00000 irq 28	# LASI on [ABC]*
+lasi0	at phantomas0 offset 0xfd00000 irq 28	# LASI on [AB]*
+lasi0	at uturn? offset 0xfd00000 irq 28	# LASI on [CJ]*
 lasi1	at mainbus0 offset 0x500000 irq 27	# 712 GIO card
 asp*	at mainbus0 irq 28	# this one comes w/ Viper and LEDs
 wax*	at mainbus0 irq 24	# Wax may host EISA as well
 mongoose* at mainbus0 irq 17	# EISA Bus Adapter (i82350 or TI???)
 #vmeb*	at mainbus0 irq ?	# VME bus adapter
-dino*	at phantomas? irq 26	# PCI bus bridge
+dino0	at phantomas? irq 26	# PCI bus bridge on [AB]*
+dino1	at phantomas? irq 25
+dino0	at uturn0 irq 26	# PCI bus bridge on [CJ]*
+dino1	at uturn1 irq 25
 pci*	at dino?
 option	PCIVERBOSE
 #pckbc0	at dino? irq 9
@@ -138,6 +144,7 @@ sti0	at mainbus0 irq 11	# [H]CRX-{8,24,48}[Z] graphics
 sti0	at phantomas0 irq 11	# builtin graphics on BC*
 sti1	at mainbus0 irq 12
 sti1	at phantomas0 irq 12
+#sti*	at pci?			# EG-PCI, FX*
 
 #medusa* at mainbus? irq 4	# FDDI
 #venus* at mainbus? irq 5	# ATM J2498A/J3420A
diff --git a/sys/arch/hppa/conf/files.hppa b/sys/arch/hppa/conf/files.hppa
index 8e11039ac9f..0b376374ab1 100644
--- a/sys/arch/hppa/conf/files.hppa
+++ b/sys/arch/hppa/conf/files.hppa
@@ -1,4 +1,4 @@
-#	$OpenBSD: files.hppa,v 1.53 2004/08/19 08:13:05 mickey Exp $
+#	$OpenBSD: files.hppa,v 1.54 2004/09/15 21:32:42 mickey Exp $
 #
 # hppa-specific configuration info
 
@@ -81,64 +81,67 @@ define	gscbus	{ }
 # Mainbus
 #
 
-define	mainbus {[offset = -1], [irq = -1]}
-device	mainbus
+define	gedoens {[offset = -1], [irq = -1]}
+device	mainbus: gedoens
 attach	mainbus at root
 file	arch/hppa/hppa/mainbus.c	mainbus
 
 device	pdc
-attach	pdc at mainbus
+attach	pdc at gedoens
 file	arch/hppa/dev/pdc.c		pdc
 
 device	power
-attach	power at mainbus
+attach	power at gedoens
 file	arch/hppa/dev/power.c		power needs-flag
 
 device	mem
-attach	mem at mainbus
+attach	mem at gedoens
 file	arch/hppa/dev/mem.c		mem
 
 device	cpu
-attach	cpu at mainbus
+attach	cpu at gedoens
 file	arch/hppa/dev/cpu.c		cpu
 
 device	fpu
-attach	fpu at mainbus
+attach	fpu at gedoens
 file	arch/hppa/dev/fpu.c		fpu
 
 # Phantom PseudoBC GSC+ Port
-define	phantomas {[offset = -1], [irq = -1]}
-device	phantomas
-attach	phantomas at mainbus
+device	phantomas: gedoens
+attach	phantomas at gedoens
 file	arch/hppa/dev/phantomas.c	phantomas
 
+# U2/Uturn, Runway to GSC Bus bridge & IOA.
+device	uturn: gedoens
+attach	uturn at gedoens
+file	arch/hppa/dev/uturn.c		uturn
+
 # 1FT1-0002, 1FU2-0002
 # as goes w/ 7100LC, 7300LC, 7200, 8000, 8200, 8500
 device	lasi: gscbus
-attach	lasi at mainbus with lasi_mainbus
-attach	lasi at phantomas with lasi_phantomas
+attach	lasi at gedoens
 file	arch/hppa/dev/lasi.c		lasi
 
 # all the older systems
 device	asp: gscbus
-attach	asp at mainbus
+attach	asp at gedoens
 file	arch/hppa/dev/asp.c		asp
 
 # 1FT4-0001, ASIC used on gecko cards
 device	wax: gscbus, isabus, eisabus
-attach	wax at mainbus
+attach	wax at gedoens
 file	arch/hppa/dev/wax.c		wax
 
 device	mongoose: isabus, eisabus
-attach	mongoose at mainbus
+attach	mongoose at gedoens
 file	arch/hppa/dev/mongoose.c	mongoose
 
 define	dinobus {[offset = -1], [irq = -1]}
 
-# Dino, GSC to PCI bridge. Includes ps/2, serial, and flying toaster interfaces
+# Dino, GSC-PCI bridge. Includes ps/2, cereal and a flying toaster interfaces
 # Cujo is a 64-bit data path Dino
 device	dino: pcibus, dinobus
-attach	dino at phantomas
+attach	dino at gedoens
 file	arch/hppa/dev/dino.c		dino
 
 attach	com at dinobus with com_dino
@@ -147,21 +150,18 @@ file	arch/hppa/dev/com_dino.c	com_dino
 # EPIC, Excalibur PCI Interface Chip. Integrated IOA
 # SAGA is a 64-bit data path EPIC
 #device	epic: pcibus
-#attach	epic at mainbus
+#attach	epic at gedoens
 #file	arch/hppa/dev/epic.c		epic
 
 # Astro, integrated Runway to Ropes bridge, Memory controller, and IOA.
 
 # Elroy, Ropes to PCI Bridge. Supports 4X PCI and dual address cycle.
 
-# U2/Uturn, Runway to GSC Bus bridge & IOA.
-
-attach	sti at mainbus with sti_sgc
-attach	sti at phantomas with sti_phantom
-file	arch/hppa/dev/sti_sgc.c		sti_sgc | sti_phantom
+attach	sti at gedoens with sti_gedoens
+file	arch/hppa/dev/sti_sgc.c		sti_gedoens
 
-#attach	siop at mainbus with siop_sgc
-#file	arch/hppa/dev/siop_sgc.c	siop_sgc
+attach	siop at gedoens with siop_sgc
+file	arch/hppa/dev/siop_sgc.c	siop_sgc
 
 ###
 
diff --git a/sys/arch/hppa/dev/uturn.c b/sys/arch/hppa/dev/uturn.c
new file mode 100644
index 00000000000..ac89be105e8
--- /dev/null
+++ b/sys/arch/hppa/dev/uturn.c
@@ -0,0 +1,108 @@
+/*	$OpenBSD: uturn.c,v 1.1 2004/09/15 21:32:43 mickey Exp $	*/
+
+/*
+ * Copyright (c) 2004 Michael Shalayeff
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR OR HIS RELATIVES BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF MIND, USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
+ * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/* TODO IOA programming */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/reboot.h>
+
+#include <machine/iomod.h>
+#include <machine/autoconf.h>
+
+#include <hppa/dev/cpudevs.h>
+
+struct uturn_regs {
+	u_int64_t	resv0[2];
+	u_int64_t	status;		/* 0x10: */
+	u_int64_t	resv1[5];
+	u_int64_t	debug;		/* 0x40: */
+};
+
+struct uturn_softc {
+	struct device sc_dv;
+
+	struct uturn_regs volatile *sc_regs;
+};
+
+int	uturnmatch(struct device *, void *, void *);
+void	uturnattach(struct device *, struct device *, void *);
+
+struct cfattach uturn_ca = {
+	sizeof(struct uturn_softc), uturnmatch, uturnattach
+};
+
+struct cfdriver uturn_cd = {
+	NULL, "uturn", DV_DULL
+};
+
+int
+uturnmatch(parent, cfdata, aux)   
+	struct device *parent;
+	void *cfdata;
+	void *aux;
+{
+	struct confargs *ca = aux;
+	/* struct cfdata *cf = cfdata; */
+
+	/* there will be only one */
+	if (ca->ca_type.iodc_type != HPPA_TYPE_IOA ||
+	    ca->ca_type.iodc_sv_model != HPPA_IOA_UTURN)
+		return 0;
+
+	return 1;
+}
+
+void
+uturnattach(parent, self, aux)
+	struct device *parent;
+	struct device *self;
+	void *aux;
+{
+	struct confargs *ca = aux, nca;
+	struct uturn_softc *sc = (struct uturn_softc *)self;
+	bus_space_handle_t ioh;
+
+	if (bus_space_map(ca->ca_iot, ca->ca_hpa, IOMOD_HPASIZE, 0, &ioh)) {
+		printf(": can't map IO space\n");
+		return;
+	}
+	sc->sc_regs = (struct uturn_regs *)ca->ca_hpa;
+
+	printf(": %s rev %d\n",
+	    ca->ca_type.iodc_revision < 0x10? "U2" : "UTurn",
+	    ca->ca_type.iodc_revision & 0xf);
+
+	/* keep it real */
+	((struct iomod *)ioh)->io_control = 0x80;
+
+	nca = *ca;	/* clone from us */
+	nca.ca_hpamask = HPPA_IOSPACE;
+	pdc_scanbus(self, &nca, MAXMODBUS, 0);
+}
diff --git a/sys/arch/hppa/hppa/locore.S b/sys/arch/hppa/hppa/locore.S
index 41a61d393b3..d0405bc1a9a 100644
--- a/sys/arch/hppa/hppa/locore.S
+++ b/sys/arch/hppa/hppa/locore.S
@@ -1,4 +1,4 @@
-/*	$OpenBSD: locore.S,v 1.139 2004/09/15 00:25:43 mickey Exp $	*/
+/*	$OpenBSD: locore.S,v 1.140 2004/09/15 21:32:43 mickey Exp $	*/
 
 /*
  * Copyright (c) 1998-2004 Michael Shalayeff
@@ -897,7 +897,7 @@ $syscall_end
 	ldi	num, r1			! \
 	b	__CONCAT($name,_t)+8	! \
 	b	__CONCAT($name,_s)+12	! \
-	nop /*b	__CONCAT($name,_u)+16 */
+	b	__CONCAT($name,_u)+16
 
 #define	ITLBPRE \
 	mfctl	pcoq,r9 ! \
@@ -1307,7 +1307,7 @@ $dtlbna_t
 	dep	r8, 30, 15, r25		/* mix0r the pid from the sid */! \
 	dep	r0, 31, 12, r17		/* needed ? */			! \
 	addi	2, r25, r25						! \
-	extru	r17, 24, 25, r17					! \
+	extru	r17, 24, 25, r17	/* tlbbtop(r17) */		! \
 	sync
 
 	.align	32
@@ -1404,6 +1404,60 @@ $dtlb_done_l
 	nop
 #endif /* HP7100LC_CPU */
 
+#if defined(HP8000_CPU) || defined(HP8200_CPU) || defined(HP8500_CPU)
+	.level	2.0
+
+	/* xlate 32bit->64bit pte */
+#define	TLB_PCX2PCXU \
+	extrw,u	r25, 14, 13, r16		! \
+	depdi	0, 31, 32, r17			! \
+		/* fix io mappings */		! \
+	extrd,s	r17, 42, 4, r1			! \
+	addi,<>	1, r1, r0			! \
+	depdi	-1, 38, 32, r17			! \
+		/* fix prom mappings */		! \
+	extrd,s	r17, 46, 8, r1			! \
+	addi,<>	0x10, r1, r0			! \
+	depdi	0, 42, 8, r17			! \
+		/* weak ordering, dyn bp */	! \
+	depwi	1, 31, 2, r16			! \
+	depdi	0, 44, 30, r25			! \
+	depd	r16, 14, 15, r25
+
+$tlbd_u
+	TLB_STATS_PRE(tlbd)
+	TLB_PULL_L(1)
+	TLB_PCX2PCXU
+	idtlbt	r17, r25
+	TLB_STATS_AFT(tlbd)
+	rfir
+	nop
+
+$itlb_u
+$itlbna_u
+	TLB_STATS_PRE(itlb)
+	TLB_PULL_L(0)
+	extru,=	r25, 5, 1, r0	/* gate needs a kernel pid */
+	depi	0, 30, 15, r25
+	TLB_PCX2PCXU
+	iitlbt	r17, r25
+	TLB_STATS_AFT(itlb)
+	rfir
+	nop
+
+$dtlbna_u
+$dtlb_u
+	TLB_STATS_PRE(dtlb)
+	TLB_PULL_L(0)
+	TLB_PCX2PCXU
+	idtlbt	r17, r25
+	TLB_STATS_AFT(dtlb)
+	rfir
+	nop
+
+	.level	1.1
+#endif /* HP8000_CPU */
+
 	.export	$tlb_missend, entry
 $tlb_missend
 
@@ -1833,6 +1887,25 @@ EXIT(desidhash_l)
 
 #endif /* HP7100LC_CPU */
 
+#if defined(HP8000_CPU) || defined(HP8200_CPU) || defined(HP8500_CPU)
+LEAF_ENTRY(desidhash_u)
+	bv	r0(rp)
+	nop
+EXIT(desidhash_u)
+
+LEAF_ENTRY(ibtlb_u)
+	/* TODO insert a locked large tlb entry */
+	bv	0(rp)
+	nop
+EXIT(ibtlb_u)
+
+LEAF_ENTRY(pbtlb_u)
+	/* TODO purge a locked tlb entry */
+	bv	0(rp)
+	nop
+EXIT(pbtlb_u)
+#endif /* HP8000_CPU */
+
 /*
  * High Priority Machine Check Interrupt
  */
diff --git a/sys/arch/hppa/hppa/machdep.c b/sys/arch/hppa/hppa/machdep.c
index aa0768ee496..4dd68f4c8e2 100644
--- a/sys/arch/hppa/hppa/machdep.c
+++ b/sys/arch/hppa/hppa/machdep.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: machdep.c,v 1.134 2004/09/14 23:39:32 mickey Exp $	*/
+/*	$OpenBSD: machdep.c,v 1.135 2004/09/15 21:32:43 mickey Exp $	*/
 
 /*
  * Copyright (c) 1999-2003 Michael Shalayeff
@@ -196,6 +196,7 @@ extern const u_int itlb_x[], itlbna_x[], dtlb_x[], dtlbna_x[], tlbd_x[];
 extern const u_int itlb_s[], itlbna_s[], dtlb_s[], dtlbna_s[], tlbd_s[];
 extern const u_int itlb_t[], itlbna_t[], dtlb_t[], dtlbna_t[], tlbd_t[];
 extern const u_int itlb_l[], itlbna_l[], dtlb_l[], dtlbna_l[], tlbd_l[];
+extern const u_int itlb_u[], itlbna_u[], dtlb_u[], dtlbna_u[], tlbd_u[];
 int iibtlb_s(int i, pa_space_t sp, vaddr_t va, paddr_t pa,
     vsize_t sz, u_int prot);
 int idbtlb_s(int i, pa_space_t sp, vaddr_t va, paddr_t pa,
@@ -204,15 +205,20 @@ int ibtlb_t(int i, pa_space_t sp, vaddr_t va, paddr_t pa,
     vsize_t sz, u_int prot);
 int ibtlb_l(int i, pa_space_t sp, vaddr_t va, paddr_t pa,
     vsize_t sz, u_int prot);
+int ibtlb_u(int i, pa_space_t sp, vaddr_t va, paddr_t pa,
+    vsize_t sz, u_int prot);
 int ibtlb_g(int i, pa_space_t sp, vaddr_t va, paddr_t pa,
     vsize_t sz, u_int prot);
 int pbtlb_g(int i);
+int pbtlb_u(int i);
 int hpti_l(vaddr_t, vsize_t);
+int hpti_u(vaddr_t, vsize_t);
 int hpti_g(vaddr_t, vsize_t);
 int desidhash_x(void);
 int desidhash_s(void);
 int desidhash_t(void);
 int desidhash_l(void);
+int desidhash_u(void);
 int desidhash_g(void);
 const struct hppa_cpu_typed {
 	char name[8];
@@ -248,16 +254,16 @@ const struct hppa_cpu_typed {
 	  0, desidhash_l, ibtlb_g, NULL, pbtlb_g, hpti_g},
 #endif
 #ifdef HP8000_CPU
-	{ "PCXU",  hpcxu, HPPA_CPU_PCXU, HPPA_FTRS_W32B|HPPA_FTRS_BTLBU,
-	  4, desidhash_g, ibtlb_g, NULL, pbtlb_g, hpti_g},
+	{ "PCXU",  hpcxu, HPPA_CPU_PCXU, HPPA_FTRS_W32B,
+	  4, desidhash_g, ibtlb_u, NULL, pbtlb_g },
 #endif
 #ifdef HP8200_CPU
-	{ "PCXU+", hpcxu2,HPPA_CPU_PCXUP, HPPA_FTRS_W32B|HPPA_FTRS_BTLBU,
-	  4, desidhash_g, ibtlb_g, NULL, pbtlb_g, hpti_g},
+	{ "PCXU+", hpcxu2,HPPA_CPU_PCXUP, HPPA_FTRS_W32B,
+	  4, desidhash_g, ibtlb_u, NULL, pbtlb_u },
 #endif
 #ifdef HP8500_CPU
-	{ "PCXW",  hpcxw, HPPA_CPU_PCXW, HPPA_FTRS_W32B|HPPA_FTRS_BTLBU,
-	  4, desidhash_g, ibtlb_g, NULL, pbtlb_g, hpti_g},
+	{ "PCXW",  hpcxw, HPPA_CPU_PCXW, HPPA_FTRS_W32B,
+	  4, desidhash_g, ibtlb_u, NULL, pbtlb_u },
 #endif
 	{ "", 0 }
 };
@@ -477,10 +483,15 @@ cpuid()
 		printf("WARNING: PDC_COPROC error %d\n", error);
 		cpu_fpuena = 0;
 	} else {
-		printf("pdc_coproc: 0x%x, 0x%x\n", pdc_coproc.ccr_enable,
-		    pdc_coproc.ccr_present);
+		printf("pdc_coproc: 0x%x, 0x%x; model %x rev %x\n",
+		    pdc_coproc.ccr_enable, pdc_coproc.ccr_present,
+		    pdc_coproc.fpu_model, pdc_coproc.fpu_revision);
 		fpu_enable = pdc_coproc.ccr_enable & CCR_MASK;
 		cpu_fpuena = 1;
+
+		/* a kludge to detect PCXW */
+		if (pdc_coproc.fpu_model == HPPA_FPU_PCXW)
+			cpu_type = HPPA_CPU_PCXW;
 	}
 
 	/* BTLB params */
@@ -561,6 +572,13 @@ cpuid()
 		trap_ep_T_ITLBMISSNA[0] = trap_ep_T_ITLBMISSNA[p->patch];
 	}
 
+	/* force strong ordering for now */
+	if (p->features & HPPA_FTRS_W32B) {
+		extern register_t kpsw;	/* intr.c */
+
+		kpsw |= PSL_O;
+	}
+
 	{
 		const char *p, *q;
 		char buf[32];
diff --git a/sys/arch/hppa/hppa/mainbus.c b/sys/arch/hppa/hppa/mainbus.c
index 2a2f215bfff..a83bc43898b 100644
--- a/sys/arch/hppa/hppa/mainbus.c
+++ b/sys/arch/hppa/hppa/mainbus.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: mainbus.c,v 1.57 2004/09/15 20:11:29 mickey Exp $	*/
+/*	$OpenBSD: mainbus.c,v 1.58 2004/09/15 21:32:43 mickey Exp $	*/
 
 /*
  * Copyright (c) 1998-2004 Michael Shalayeff
@@ -1015,10 +1015,10 @@ mbattach(parent, self, aux)
 		panic("mbattach: cannot map mainbus IO space");
 
 	/*
-	 * Local-Broadcast the HPA to all modules on the bus
+	 * Local-Broadcast the HPA to all modules on this bus
 	 */
-	((struct iomod *)(pdc_hpa.hpa & HPPA_FLEX_MASK))[FPA_IOMOD].io_flex =
-		(void *)((pdc_hpa.hpa & HPPA_FLEX_MASK) | DMA_ENABLE);
+	((struct iomod *)LBCAST_ADDR)->io_flex =
+	    (void *)((pdc_hpa.hpa & HPPA_FLEX_MASK) | DMA_ENABLE);
 
 	sc->sc_hpa = pdc_hpa.hpa;