diff options
| -rw-r--r-- | share/man/man4/Makefile | 2 | ||||
| -rw-r--r-- | share/man/man4/ftwd.4 | 66 | ||||
| -rw-r--r-- | sys/dev/ftwd/ftwd.c | 157 | ||||
| -rw-r--r-- | sys/modules/Makefile | 2 | ||||
| -rw-r--r-- | sys/modules/ftwd/Makefile | 9 |
5 files changed, 236 insertions, 0 deletions
diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile index 49525c2fe55d..f453a8340428 100644 --- a/share/man/man4/Makefile +++ b/share/man/man4/Makefile @@ -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 diff --git a/share/man/man4/ftwd.4 b/share/man/man4/ftwd.4 new file mode 100644 index 000000000000..6acef6698ac1 --- /dev/null +++ b/share/man/man4/ftwd.4 @@ -0,0 +1,66 @@ +.\" +.\" SPDX-License-Identifier: BSD-2-Clause-FreeBSD +.\" +.\" Copyright (c) 2012 Bjoern A. Zeeb <bz@FreeBSD.org> +.\" Copyright (c) 2019 Andriy Gapon <avg@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@FreeBSD.org . diff --git a/sys/dev/ftwd/ftwd.c b/sys/dev/ftwd/ftwd.c new file mode 100644 index 000000000000..a42bad4aa2f6 --- /dev/null +++ b/sys/dev/ftwd/ftwd.c @@ -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); diff --git a/sys/modules/Makefile b/sys/modules/Makefile index e7a02c31787b..f5b145b4210b 100644 --- a/sys/modules/Makefile +++ b/sys/modules/Makefile @@ -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 diff --git a/sys/modules/ftwd/Makefile b/sys/modules/ftwd/Makefile new file mode 100644 index 000000000000..797e9fc43fda --- /dev/null +++ b/sys/modules/ftwd/Makefile @@ -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> |