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[src/trunk]: src/sys/arch Add support for the watchdog timers on the BCM1xxx ...
details: https://anonhg.NetBSD.org/src/rev/61b8d6ffd39a
branches: trunk
changeset: 534637:61b8d6ffd39a
user: simonb <simonb%NetBSD.org@localhost>
date: Wed Jul 31 05:30:20 2002 +0000
description:
Add support for the watchdog timers on the BCM1xxx parts.
diffstat:
sys/arch/mips/conf/files.sibyte | 2 +-
sys/arch/mips/sibyte/dev/sbwdog.c | 144 ++++++++++++++++++++++++++++++++++++++
sys/arch/sbmips/conf/GENERIC | 10 +-
3 files changed, 150 insertions(+), 6 deletions(-)
diffs (188 lines):
diff -r 39c7317c8116 -r 61b8d6ffd39a sys/arch/mips/conf/files.sibyte
--- a/sys/arch/mips/conf/files.sibyte Wed Jul 31 05:02:12 2002 +0000
+++ b/sys/arch/mips/conf/files.sibyte Wed Jul 31 05:30:20 2002 +0000
@@ -39,7 +39,7 @@
attach sbtimer at sbscd
file arch/mips/sibyte/dev/sbtimer.c sbtimer
-device sbwdog
+device sbwdog: sysmon_wdog
attach sbwdog at sbscd
file arch/mips/sibyte/dev/sbwdog.c sbwdog
diff -r 39c7317c8116 -r 61b8d6ffd39a sys/arch/mips/sibyte/dev/sbwdog.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/mips/sibyte/dev/sbwdog.c Wed Jul 31 05:30:20 2002 +0000
@@ -0,0 +1,144 @@
+/* $NetBSD: sbwdog.c,v 1.1 2002/07/31 05:30:21 simonb Exp $ */
+
+/*
+ * Copyright (c) 2002 Wasabi Systems, Inc.
+ * All rights reserved.
+ *
+ * Written by Jason R. Thorpe and Simon Burge for Wasabi Systems, Inc.
+ *
+ * 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.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed for the NetBSD Project by
+ * Wasabi Systems, Inc.
+ * 4. The name of Wasabi Systems, Inc. may not be used to endorse
+ * or promote products derived from this software without specific prior
+ * written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
+ * 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.
+ */
+
+/*
+ * Watchdog timer support for the Broadcom BCM1250 processor.
+ */
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/wdog.h>
+
+#include <dev/sysmon/sysmonvar.h>
+
+#include <machine/locore.h>
+
+#include <mips/sibyte/include/sb1250_regs.h>
+#include <mips/sibyte/include/sb1250_scd.h>
+#include <mips/sibyte/dev/sbscdvar.h>
+
+#define SBWDOG_DEFAULT_PERIOD 5 /* Default to 5 seconds. */
+
+struct sbwdog_softc {
+ struct device sc_dev;
+ struct sysmon_wdog sc_smw;
+ u_long sc_addr;
+ int sc_wdog_armed;
+ int sc_wdog_period;
+};
+
+static int sbwdog_match(struct device *, struct cfdata *, void *);
+static void sbwdog_attach(struct device *, struct device *, void *);
+static int sbwdog_tickle(struct sysmon_wdog *);
+static int sbwdog_setmode(struct sysmon_wdog *);
+
+struct cfattach sbwdog_ca = {
+ sizeof(struct sbwdog_softc), sbwdog_match, sbwdog_attach,
+};
+
+#define READ_REG(rp) (mips3_ld((uint64_t *)(rp)))
+#define WRITE_REG(rp, val) (mips3_sd((uint64_t *)(rp), (val)))
+
+static int
+sbwdog_match(struct device *parent, struct cfdata *cf, void *aux)
+{
+ struct sbscd_attach_args *sa = aux;
+
+ if (sa->sa_locs.sa_type != SBSCD_DEVTYPE_WDOG)
+ return (0);
+
+ return (1);
+}
+
+static void
+sbwdog_attach(struct device *parent, struct device *self, void *aux)
+{
+ struct sbwdog_softc *sc = (void *)self;
+ struct sbscd_attach_args *sa = aux;
+
+ sc->sc_wdog_period = SBWDOG_DEFAULT_PERIOD;
+ sc->sc_addr = MIPS_PHYS_TO_KSEG1(sa->sa_base + sa->sa_locs.sa_offset);
+
+ printf(": %d second period\n", sc->sc_wdog_period);
+
+ sc->sc_smw.smw_name = sc->sc_dev.dv_xname;
+ sc->sc_smw.smw_cookie = sc;
+ sc->sc_smw.smw_setmode = sbwdog_setmode;
+ sc->sc_smw.smw_tickle = sbwdog_tickle;
+ sc->sc_smw.smw_period = sc->sc_wdog_period;
+
+ if (sysmon_wdog_register(&sc->sc_smw) != 0)
+ printf("%s: unable to register with sysmon\n",
+ sc->sc_dev.dv_xname);
+}
+
+static int
+sbwdog_tickle(struct sysmon_wdog *smw)
+{
+ struct sbwdog_softc *sc = smw->smw_cookie;
+
+ WRITE_REG(sc->sc_addr + R_SCD_WDOG_CFG, M_SCD_WDOG_ENABLE);
+ return (0);
+}
+
+static int
+sbwdog_setmode(struct sysmon_wdog *smw)
+{
+ struct sbwdog_softc *sc = smw->smw_cookie;
+
+ if ((smw->smw_mode & WDOG_MODE_MASK) == WDOG_MODE_DISARMED) {
+ if (sc->sc_wdog_armed)
+ WRITE_REG(sc->sc_addr + R_SCD_WDOG_CFG, 0);
+ } else {
+ if (smw->smw_period == WDOG_PERIOD_DEFAULT) {
+ sc->sc_wdog_period = SBWDOG_DEFAULT_PERIOD;
+ smw->smw_period = SBWDOG_DEFAULT_PERIOD; /* XXX needed?? */
+ } else if (smw->smw_period > 8) {
+ /* Maximum of 2^23 usec watchdog period. */
+ return (EOPNOTSUPP);
+ }
+ sc->sc_wdog_period = smw->smw_period;
+ sc->sc_wdog_armed = 1;
+ WRITE_REG(sc->sc_addr + R_SCD_WDOG_INIT,
+ sc->sc_wdog_period * V_SCD_WDOG_FREQ);
+
+ /* Watchdog is armed by tickling it. */
+ sbwdog_tickle(smw);
+ }
+ return (0);
+}
diff -r 39c7317c8116 -r 61b8d6ffd39a sys/arch/sbmips/conf/GENERIC
--- a/sys/arch/sbmips/conf/GENERIC Wed Jul 31 05:02:12 2002 +0000
+++ b/sys/arch/sbmips/conf/GENERIC Wed Jul 31 05:30:20 2002 +0000
@@ -1,11 +1,11 @@
-# $NetBSD: GENERIC,v 1.8 2002/06/17 05:14:23 lukem Exp $
+# $NetBSD: GENERIC,v 1.9 2002/07/31 05:30:21 simonb Exp $
-include "arch/sbmips/conf/std.sbmips.eb" # big-endian mode
-#include "arch/sbmips/conf/std.sbmips.el" # little-endian mode
+#include "arch/sbmips/conf/std.sbmips.eb" # big-endian mode
+include "arch/sbmips/conf/std.sbmips.el" # little-endian mode
options INCLUDE_CONFIG_FILE # embed config file in kernel binary
-#ident "GENERIC-$Revision: 1.8 $"
+#ident "GENERIC-$Revision: 1.9 $"
# The following three options are required for BCM1250 pass 1 silicon
options SB1250_PASS1
@@ -112,7 +112,7 @@
sbobio* at zbbus? busid ?
#sbicu* at sbscd? offset ?
-#sbwdog* at sbscd? offset ? intr ?
+sbwdog* at sbscd? offset ? intr ?
sbtimer0 at sbscd? offset ? intr ? flags 0x01 # clock
#sbtimer1 at sbscd? offset ? intr ? flags 0x02 # statclock
sbtimer* at sbscd? offset ? intr ?
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