af3dc4a7ca
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
118 lines
3.3 KiB
C
118 lines
3.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2006 Sam Leffler. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* IXP4XX Watchdog Timer Support.
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/module.h>
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#include <sys/time.h>
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#include <sys/bus.h>
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#include <sys/resource.h>
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#include <sys/rman.h>
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#include <sys/watchdog.h>
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#include <machine/bus.h>
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#include <machine/resource.h>
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#include <machine/intr.h>
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#include <arm/xscale/ixp425/ixp425reg.h>
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#include <arm/xscale/ixp425/ixp425var.h>
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struct ixpwdog_softc {
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device_t sc_dev;
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};
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static __inline uint32_t
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RD4(struct ixpwdog_softc *sc, bus_size_t off)
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{
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return bus_space_read_4(&ixp425_bs_tag, IXP425_TIMER_VBASE, off);
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}
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static __inline void
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WR4(struct ixpwdog_softc *sc, bus_size_t off, uint32_t val)
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{
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bus_space_write_4(&ixp425_bs_tag, IXP425_TIMER_VBASE, off, val);
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}
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static void
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ixp425_watchdog(void *arg, u_int cmd, int *error)
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{
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struct ixpwdog_softc *sc = arg;
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u_int u = cmd & WD_INTERVAL;
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WR4(sc, IXP425_OST_WDOG_KEY, OST_WDOG_KEY_MAJICK);
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if (4 <= u && u <= 35) {
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WR4(sc, IXP425_OST_WDOG_ENAB, 0);
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/* approximate 66.66MHz cycles */
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WR4(sc, IXP425_OST_WDOG, 2<<(u - 4));
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/* NB: reset on timer expiration */
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WR4(sc, IXP425_OST_WDOG_ENAB,
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OST_WDOG_ENAB_CNT_ENA | OST_WDOG_ENAB_RST_ENA);
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*error = 0;
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} else {
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/* disable watchdog */
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WR4(sc, IXP425_OST_WDOG_ENAB, 0);
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}
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WR4(sc, IXP425_OST_WDOG_KEY, 0);
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}
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static int
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ixpwdog_probe(device_t dev)
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{
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device_set_desc(dev, "IXP4XX Watchdog Timer");
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return (0);
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}
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static int
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ixpwdog_attach(device_t dev)
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{
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struct ixpwdog_softc *sc = device_get_softc(dev);
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sc->sc_dev = dev;
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EVENTHANDLER_REGISTER(watchdog_list, ixp425_watchdog, sc, 0);
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return (0);
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}
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static device_method_t ixpwdog_methods[] = {
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DEVMETHOD(device_probe, ixpwdog_probe),
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DEVMETHOD(device_attach, ixpwdog_attach),
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{0, 0},
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};
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static driver_t ixpwdog_driver = {
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"ixpwdog",
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ixpwdog_methods,
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sizeof(struct ixpwdog_softc),
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};
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static devclass_t ixpwdog_devclass;
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DRIVER_MODULE(ixpwdog, ixp, ixpwdog_driver, ixpwdog_devclass, 0, 0);
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