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[src/trunk]: src/sys/arch/hp300 Add proper RealTime Clock support for HP9000/...
details: https://anonhg.NetBSD.org/src/rev/9ed20512055f
branches: trunk
changeset: 328815:9ed20512055f
user: tsutsui <tsutsui%NetBSD.org@localhost>
date: Sat Apr 19 05:37:54 2014 +0000
description:
Add proper RealTime Clock support for HP9000/425e.
As the OpenBSD/hp300 page says 425e doesn't have the traditional
RTC at intio (as it also lacks DCA 16550 serial at intio?),
but after a few hour investigation it turns out that
425e uses mc146818 compatible calendar clock in
the Apollo "frodo" utility chip and the frodo chip on
425e actually has the 32kHz OSC and is actually backed up
by the onboard lithium battery.
Tested on HP425e (with mcclock) and HP362 (with old rtc).
diffstat:
sys/arch/hp300/conf/GENERIC | 7 +-
sys/arch/hp300/conf/INSTALL | 5 +-
sys/arch/hp300/conf/files.hp300 | 7 +-
sys/arch/hp300/dev/frodo.c | 5 +-
sys/arch/hp300/dev/frodoreg.h | 4 +-
sys/arch/hp300/dev/mcclock_frodo.c | 141 +++++++++++++++++++++++++++++++++++++
sys/arch/hp300/dev/rtc.c | 8 +-
7 files changed, 167 insertions(+), 10 deletions(-)
diffs (286 lines):
diff -r cc22509bc02d -r 9ed20512055f sys/arch/hp300/conf/GENERIC
--- a/sys/arch/hp300/conf/GENERIC Sat Apr 19 00:55:37 2014 +0000
+++ b/sys/arch/hp300/conf/GENERIC Sat Apr 19 05:37:54 2014 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: GENERIC,v 1.180 2013/08/16 13:39:47 tsutsui Exp $
+# $NetBSD: GENERIC,v 1.181 2014/04/19 05:37:54 tsutsui Exp $
#
# GENERIC machine description file
#
@@ -22,7 +22,7 @@
options INCLUDE_CONFIG_FILE # embed config file in kernel binary
-#ident "GENERIC-$Revision: 1.180 $"
+#ident "GENERIC-$Revision: 1.181 $"
maxusers 32 # estimated number of users
@@ -213,6 +213,9 @@
wsmouse* at dnkbd? mux 0
com* at frodo? offset ? # tty flavor
+# mc146818-like real time clock found on 425e
+mcclock0 at frodo? offset 0x80
+
dvbox* at intio? # Davinci framebuffer
dvbox* at dio? scode ?
wsdisplay* at dvbox?
diff -r cc22509bc02d -r 9ed20512055f sys/arch/hp300/conf/INSTALL
--- a/sys/arch/hp300/conf/INSTALL Sat Apr 19 00:55:37 2014 +0000
+++ b/sys/arch/hp300/conf/INSTALL Sat Apr 19 05:37:54 2014 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: INSTALL,v 1.55 2013/06/30 21:38:57 rmind Exp $
+# $NetBSD: INSTALL,v 1.56 2014/04/19 05:37:54 tsutsui Exp $
#
# INSTALL machine description file
#
@@ -157,6 +157,9 @@
#wskbd* at dnkbd? mux 1
com* at frodo? offset ? # tty flavor
+# mc146818-like real time clock found on 425e
+mcclock0 at frodo? offset 0x80
+
# Davinci framebuffer
dvbox* at intio?
dvbox* at dio? scode ?
diff -r cc22509bc02d -r 9ed20512055f sys/arch/hp300/conf/files.hp300
--- a/sys/arch/hp300/conf/files.hp300 Sat Apr 19 00:55:37 2014 +0000
+++ b/sys/arch/hp300/conf/files.hp300 Sat Apr 19 05:37:54 2014 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: files.hp300,v 1.86 2013/08/16 13:39:47 tsutsui Exp $
+# $NetBSD: files.hp300,v 1.87 2014/04/19 05:37:54 tsutsui Exp $
#
# hp300-specific configuration info
@@ -85,6 +85,11 @@
file arch/hp300/dev/dnkbd.c dnkbd needs-flag
file arch/hp300/dev/dnkbdmap.c dnkbd
+# An mc146818-like calendar on 425e
+device mcclock: mc146818
+attach mcclock at frodo with mcclock_frodo
+file arch/hp300/dev/mcclock_frodo.c mcclock_frodo
+
#
# Frame buffer devices on Internal I/O and the DIO bus
#
diff -r cc22509bc02d -r 9ed20512055f sys/arch/hp300/dev/frodo.c
--- a/sys/arch/hp300/dev/frodo.c Sat Apr 19 00:55:37 2014 +0000
+++ b/sys/arch/hp300/dev/frodo.c Sat Apr 19 05:37:54 2014 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: frodo.c,v 1.30 2011/02/12 22:48:04 tsutsui Exp $ */
+/* $NetBSD: frodo.c,v 1.31 2014/04/19 05:37:54 tsutsui Exp $ */
/*-
* Copyright (c) 1997, 1998, 1999 The NetBSD Foundation, Inc.
@@ -60,7 +60,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: frodo.c,v 1.30 2011/02/12 22:48:04 tsutsui Exp $");
+__KERNEL_RCSID(0, "$NetBSD: frodo.c,v 1.31 2014/04/19 05:37:54 tsutsui Exp $");
#define _HP300_INTR_H_PRIVATE
@@ -117,6 +117,7 @@
{ "com", FRODO_APCI_OFFSET(1), FRODO_INTR_APCI1 },
{ "com", FRODO_APCI_OFFSET(2), FRODO_INTR_APCI2 },
{ "com", FRODO_APCI_OFFSET(3), FRODO_INTR_APCI3 },
+ { "mcclock", FRODO_CALENDAR, FRODO_INTR_CALENDAR },
{ NULL, 0, 0 }
};
diff -r cc22509bc02d -r 9ed20512055f sys/arch/hp300/dev/frodoreg.h
--- a/sys/arch/hp300/dev/frodoreg.h Sat Apr 19 00:55:37 2014 +0000
+++ b/sys/arch/hp300/dev/frodoreg.h Sat Apr 19 05:37:54 2014 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: frodoreg.h,v 1.4 2006/07/19 17:21:23 tsutsui Exp $ */
+/* $NetBSD: frodoreg.h,v 1.5 2014/04/19 05:37:54 tsutsui Exp $ */
/*
* Copyright (c) 1997 Michael Smith. All rights reserved.
@@ -36,7 +36,7 @@
* Other items in the Frodo part
*/
-/* An mc146818-like calendar, but no battery... lame */
+/* An mc146818-like calendar. Only 425e has a battery and an oscillator. */
#define FRODO_CALENDAR 0x80
#define FRODO_TIMER 0xa0 /* 8254-like timer */
diff -r cc22509bc02d -r 9ed20512055f sys/arch/hp300/dev/mcclock_frodo.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/hp300/dev/mcclock_frodo.c Sat Apr 19 05:37:54 2014 +0000
@@ -0,0 +1,141 @@
+/* $NetBSD: mcclock_frodo.c,v 1.1 2014/04/19 05:37:54 tsutsui Exp $ */
+/*-
+ * Copyright (c) 2014 Izumi Tsutsui. 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 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 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.
+ */
+
+#include <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: mcclock_frodo.c,v 1.1 2014/04/19 05:37:54 tsutsui Exp $");
+
+#include <sys/param.h>
+#include <sys/device.h>
+#include <sys/bus.h>
+
+#include <machine/cpu.h>
+
+#include <dev/clock_subr.h>
+#include <dev/ic/mc146818reg.h>
+#include <dev/ic/mc146818var.h>
+
+#include <hp300/dev/frodoreg.h>
+#include <hp300/dev/frodovar.h>
+
+#include "ioconf.h"
+
+static int mcclock_frodo_probe(device_t, cfdata_t, void *);
+static void mcclock_frodo_attach(device_t, device_t, void *);
+
+static u_int mcclock_frodo_read(struct mc146818_softc *, u_int);
+static void mcclock_frodo_write(struct mc146818_softc *, u_int, u_int);
+
+CFATTACH_DECL_NEW(mcclock_frodo, sizeof(struct mc146818_softc),
+ mcclock_frodo_probe, mcclock_frodo_attach, NULL, NULL);
+
+#define MCCLOCK_FRODO_NPORTS 2
+
+static int
+mcclock_frodo_probe(device_t parent, cfdata_t cf, void *aux)
+{
+ struct frodo_attach_args *fa = aux;
+
+ /* only 425e has a valid mcclock */
+ if (machineid != HP_425 || mmuid != MMUID_425_E)
+ return 0;
+
+ if (strcmp(fa->fa_name, mcclock_cd.cd_name) != 0)
+ return 0;
+
+ if (fa->fa_offset != FRODO_CALENDAR)
+ return 0;
+
+ return 1;
+}
+
+static void
+mcclock_frodo_attach(device_t parent, device_t self, void *aux)
+{
+ struct mc146818_softc *sc = device_private(self);
+ struct frodo_attach_args *fa = aux;
+
+ sc->sc_dev = self;
+ sc->sc_bst = fa->fa_bst;
+
+ if (bus_space_map(sc->sc_bst, fa->fa_base + fa->fa_offset,
+ MCCLOCK_FRODO_NPORTS << 2, 0, &sc->sc_bsh) != 0) {
+ aprint_error(": can't map register\n");
+ return;
+ }
+
+ sc->sc_year0 = 1900;
+ sc->sc_mcread = mcclock_frodo_read;
+ sc->sc_mcwrite = mcclock_frodo_write;
+ sc->sc_flag = 0;
+ mc146818_attach(sc);
+
+ aprint_normal("\n");
+
+ /* XXX: not sure which mode (BINARY or BCD) is used on HP-UX */
+ mcclock_frodo_write(sc, MC_REGB, MC_REGB_BINARY | MC_REGB_24HR);
+
+ /* make sure to start the 32.768kHz OSC */
+ mcclock_frodo_write(sc, MC_REGA,
+ (mcclock_frodo_read(sc, MC_REGA) & ~MC_REGA_DVMASK) |
+ MC_BASE_32_KHz);
+}
+
+/*
+ * mc146818 calendar chip in the frodo utility chip is can be accessed
+ * via register port at offset 0x80 and data port at offset 0x84.
+ *
+ * Note 4 byte offset stride is handled by frodo bus_space(9) layer,
+ * so bus_space_read(9) and bus_space_write(9) takes 0 or 1 as offset
+ * to access these registers.
+ */
+
+static void
+mcclock_frodo_write(struct mc146818_softc *sc, u_int reg, u_int datum)
+{
+ bus_space_tag_t iot;
+ bus_space_handle_t ioh;
+
+ iot = sc->sc_bst;
+ ioh = sc->sc_bsh;
+
+ bus_space_write_1(iot, ioh, 0, reg);
+ bus_space_write_1(iot, ioh, 1, datum);
+}
+
+static u_int
+mcclock_frodo_read(struct mc146818_softc *sc, u_int reg)
+{
+ bus_space_tag_t iot;
+ bus_space_handle_t ioh;
+ u_int datum;
+
+ iot = sc->sc_bst;
+ ioh = sc->sc_bsh;
+
+ bus_space_write_1(iot, ioh, 0, reg);
+ datum = bus_space_read_1(iot, ioh, 1);
+
+ return datum;
+}
diff -r cc22509bc02d -r 9ed20512055f sys/arch/hp300/dev/rtc.c
--- a/sys/arch/hp300/dev/rtc.c Sat Apr 19 00:55:37 2014 +0000
+++ b/sys/arch/hp300/dev/rtc.c Sat Apr 19 05:37:54 2014 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: rtc.c,v 1.20 2011/02/08 20:20:13 rmind Exp $ */
+/* $NetBSD: rtc.c,v 1.21 2014/04/19 05:37:54 tsutsui Exp $ */
/*
* Copyright (c) 1988 University of Utah.
@@ -43,7 +43,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: rtc.c,v 1.20 2011/02/08 20:20:13 rmind Exp $");
+__KERNEL_RCSID(0, "$NetBSD: rtc.c,v 1.21 2014/04/19 05:37:54 tsutsui Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -79,6 +79,10 @@
{
struct intio_attach_args *ia = aux;
+ /* 425e doesn't have the traditional RTC at intio */
+ if (machineid == HP_425 && mmuid == MMUID_425_E)
+ return 0;
+
if (strcmp("rtc", ia->ia_modname) != 0)
return 0;
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