svn commit: r368130 - in head: share/man/man4 sys/dev/ftwd sys/modules sys/modules/ftwd
Poul-Henning Kamp
phk at FreeBSD.org
Sat Nov 28 22:34:35 UTC 2020
Author: phk
Date: Sat Nov 28 22:34:33 2020
New Revision: 368130
URL: https://svnweb.freebsd.org/changeset/base/368130
Log:
Add watchdog(9) driver for the Fintek F81803 SuperIO chip
Added:
head/share/man/man4/ftwd.4 (contents, props changed)
head/sys/dev/ftwd/
head/sys/dev/ftwd/ftwd.c (contents, props changed)
head/sys/modules/ftwd/
head/sys/modules/ftwd/Makefile (contents, props changed)
Modified:
head/share/man/man4/Makefile
head/sys/modules/Makefile
Modified: head/share/man/man4/Makefile
==============================================================================
--- head/share/man/man4/Makefile Sat Nov 28 18:09:16 2020 (r368129)
+++ head/share/man/man4/Makefile Sat Nov 28 22:34:33 2020 (r368130)
@@ -158,6 +158,7 @@ MAN= aac.4 \
ffclock.4 \
filemon.4 \
firewire.4 \
+ ${_ftwd.4} \
full.4 \
fwe.4 \
fwip.4 \
@@ -785,6 +786,7 @@ _chvgpio.4= chvgpio.4
_coretemp.4= coretemp.4
_cpuctl.4= cpuctl.4
_dpms.4= dpms.4
+_ftwd.4= ftwd.4
_hpt27xx.4= hpt27xx.4
_hptiop.4= hptiop.4
_hptmv.4= hptmv.4
Added: head/share/man/man4/ftwd.4
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/share/man/man4/ftwd.4 Sat Nov 28 22:34:33 2020 (r368130)
@@ -0,0 +1,66 @@
+.\"
+.\" SPDX-License-Identifier: BSD-2-Clause-FreeBSD
+.\"
+.\" Copyright (c) 2012 Bjoern A. Zeeb <bz at FreeBSD.org>
+.\" Copyright (c) 2019 Andriy Gapon <avg at FreeBSD.org>
+.\"
+.\" 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 AND CONTRIBUTORS ``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 CONTRIBUTORS 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.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd November 26, 2020
+.Dt FTWD 4
+.Os
+.Sh NAME
+.Nm ftwd
+.Nd Fintek F81803 watchdog timer
+.Sh SYNOPSIS
+To compile this driver into the kernel, place the following lines in your
+kernel configuration file:
+.Bd -ragged -offset indent
+.Cd "device superio"
+.Cd "device ftwd"
+.Ed
+.Pp
+Alternatively, to load the driver as a module at boot time, place the following
+line in
+.Xr loader.conf 5 :
+.Bd -literal -offset indent
+ftwd_load="YES"
+.Ed
+.Sh DESCRIPTION
+The
+.Nm
+driver provides
+.Xr watchdog 4
+support for the watchdog timer in the Fintek F81803 chip.
+.Sh SEE ALSO
+.Xr superio 4 ,
+.Xr watchdog 4 ,
+.Xr device.hints 5 ,
+.Xr watchdog 8 ,
+.Xr watchdogd 8 ,
+.Xr watchdog 9
+.Sh AUTHORS
+.An -nosplit
+This manual page was written by
+.An Poul-Henning Kamp Aq Mt phk at FreeBSD.org .
Added: head/sys/dev/ftwd/ftwd.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/ftwd/ftwd.c Sat Nov 28 22:34:33 2020 (r368130)
@@ -0,0 +1,157 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2020 Poul-Henning Kamp
+ *
+ * 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 AND CONTRIBUTORS ``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 CONTRIBUTORS 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>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/kernel.h>
+#include <sys/bus.h>
+#include <sys/eventhandler.h>
+#include <sys/module.h>
+#include <sys/rman.h>
+#include <sys/systm.h>
+#include <sys/watchdog.h>
+
+#include <dev/superio/superio.h>
+
+#include <machine/bus.h>
+#include <machine/resource.h>
+
+struct ftwd_softc {
+ eventhandler_tag wd_ev;
+};
+
+static void
+ftwd_func(void *priv, u_int cmd, int *error)
+{
+ device_t dev = priv;
+ uint64_t timeout;
+ uint8_t val = 0;
+ uint8_t minutes = 0;
+
+ if (cmd != 0) {
+ cmd &= WD_INTERVAL;
+
+ /* Convert the requested timeout to seconds. */
+ if (cmd >= WD_TO_1SEC)
+ timeout = (uint64_t)1 << (cmd - WD_TO_1SEC);
+ else
+ timeout = 1;
+
+ if (timeout <= UINT8_MAX) {
+ val = timeout;
+ *error = 0;
+ } else if ((timeout / 60) <= UINT8_MAX) {
+ val = timeout / 60;
+ minutes = 1;
+ *error = 0;
+ }
+ }
+ if (bootverbose) {
+ if (val == 0) {
+ device_printf(dev, "disabling watchdog\n");
+ } else {
+ device_printf(dev,
+ "arm watchdog to %d %s%s (Was: 0x%02x)\n",
+ val, minutes ? "minute" : "second",
+ val == 1 ? "" : "s",
+ superio_read(dev, 0xf6)
+ );
+ }
+ }
+ superio_write(dev, 0xf0, 0x00); // Disable WDTRST#
+ superio_write(dev, 0xf6, val); // Set Counter
+
+ if (minutes)
+ superio_write(dev, 0xf5, 0x7d); // minutes, act high, 125ms
+ else
+ superio_write(dev, 0xf5, 0x75); // seconds, act high, 125ms
+
+ if (val)
+ superio_write(dev, 0xf7, 0x01); // Disable PME
+ if (val)
+ superio_write(dev, 0xf0, 0x81); // Enable WDTRST#
+ else
+ superio_write(dev, 0xf0, 0x00); // Disable WDTRST
+}
+
+static int
+ftwd_probe(device_t dev)
+{
+
+ if (superio_vendor(dev) != SUPERIO_VENDOR_FINTEK ||
+ superio_get_type(dev) != SUPERIO_DEV_WDT)
+ return (ENXIO);
+ device_set_desc(dev, "Watchdog Timer on Fintek SuperIO");
+ return (BUS_PROBE_DEFAULT);
+}
+
+static int
+ftwd_attach(device_t dev)
+{
+ struct ftwd_softc *sc = device_get_softc(dev);
+
+ /*
+ * We do not touch the watchdog at this time, it might be armed
+ * by firmware to protect the full boot sequence.
+ */
+
+ sc->wd_ev = EVENTHANDLER_REGISTER(watchdog_list, ftwd_func, dev, 0);
+ return (0);
+}
+
+static int
+ftwd_detach(device_t dev)
+{
+ struct ftwd_softc *sc = device_get_softc(dev);
+ int dummy;
+
+ if (sc->wd_ev != NULL)
+ EVENTHANDLER_DEREGISTER(watchdog_list, sc->wd_ev);
+ ftwd_func(dev, 0, &dummy);
+ return (0);
+}
+
+static device_method_t ftwd_methods[] = {
+ DEVMETHOD(device_probe, ftwd_probe),
+ DEVMETHOD(device_attach, ftwd_attach),
+ DEVMETHOD(device_detach, ftwd_detach),
+ { 0, 0 }
+};
+
+static driver_t ftwd_driver = {
+ "ftwd",
+ ftwd_methods,
+ sizeof (struct ftwd_softc)
+};
+
+static devclass_t ftwd_devclass;
+
+DRIVER_MODULE(ftwd, superio, ftwd_driver, ftwd_devclass, NULL, NULL);
+MODULE_DEPEND(ftwd, superio, 1, 1, 1);
+MODULE_VERSION(ftwd, 1);
Modified: head/sys/modules/Makefile
==============================================================================
--- head/sys/modules/Makefile Sat Nov 28 18:09:16 2020 (r368129)
+++ head/sys/modules/Makefile Sat Nov 28 22:34:33 2020 (r368130)
@@ -121,6 +121,7 @@ SUBDIR= \
filemon \
firewire \
firmware \
+ ${_ftwd} \
fusefs \
${_fxp} \
gem \
@@ -618,6 +619,7 @@ _cpufreq= cpufreq
_dpms= dpms
_em= em
_et= et
+_ftwd= ftwd
_exca= exca
_if_ndis= if_ndis
_io= io
Added: head/sys/modules/ftwd/Makefile
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/modules/ftwd/Makefile Sat Nov 28 22:34:33 2020 (r368130)
@@ -0,0 +1,9 @@
+# $FreeBSD$
+
+.PATH: ${SRCTOP}/sys/dev/ftwd
+
+KMOD= ftwd
+SRCS= ftwd.c
+SRCS+= device_if.h bus_if.h isa_if.h
+
+.include <bsd.kmod.mk>
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