113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
/* $NetBSD: obio_wdt.c,v 1.5 2008/11/20 20:23:05 cliff Exp $ */
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/*
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* Copyright (c) 2007 Microsoft
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* 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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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Microsoft
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTERS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* obio attachment for GEMINI watchdog timers
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*/
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#include "opt_gemini.h"
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#include "locators.h"
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: obio_wdt.c,v 1.5 2008/11/20 20:23:05 cliff Exp $");
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#include <sys/param.h>
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#include <sys/callout.h>
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#include <sys/cdefs.h>
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#include <sys/device.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/wdog.h>
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#include <machine/param.h>
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#include <machine/bus.h>
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#include <dev/sysmon/sysmonvar.h>
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#include <arm/gemini/gemini_obiovar.h>
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#include <arm/gemini/gemini_wdtvar.h>
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#include <arm/gemini/gemini_reg.h>
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static int geminiwdt_match(struct device *, struct cfdata *, void *);
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static void geminiwdt_attach(struct device *, struct device *, void *);
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CFATTACH_DECL_NEW(obiowdt, sizeof(struct geminiwdt_softc),
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geminiwdt_match, geminiwdt_attach, NULL, NULL);
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static int
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geminiwdt_match(struct device *parent, struct cfdata *cf, void *aux)
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{
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struct obio_attach_args *obio = aux;
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if (obio->obio_addr == OBIOCF_ADDR_DEFAULT)
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panic("geminiwdt must have addr specified in config.");
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if (obio->obio_addr == GEMINI_WATCHDOG_BASE)
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return 1;
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return 0;
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}
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static void
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geminiwdt_attach(struct device *parent, struct device *self, void *aux)
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{
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geminiwdt_softc_t *sc = device_private(self);
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struct obio_attach_args *obio = aux;
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sc->sc_dev = self;
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sc->sc_addr = obio->obio_addr;
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sc->sc_size = (obio->obio_size == OBIOCF_SIZE_DEFAULT)
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? GEMINI_WDT_WDINTERLEN + 4
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: obio->obio_size;
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sc->sc_smw.smw_name = device_xname(sc->sc_dev);
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sc->sc_smw.smw_cookie = sc;
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sc->sc_smw.smw_setmode = geminiwdt_setmode;
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sc->sc_smw.smw_tickle = geminiwdt_tickle;
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sc->sc_smw.smw_period = 0;
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sc->sc_iot = obio->obio_iot;
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if (bus_space_map(sc->sc_iot, sc->sc_addr, sc->sc_size, 0, &sc->sc_ioh))
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panic("%s: Cannot map registers", device_xname(self));
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geminiwdt_sc = sc;
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sc->sc_armed = 1; /* fake armed so can disarm */
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geminiwdt_enable(0); /* disable, stop, disarm */
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if (sysmon_wdog_register(&sc->sc_smw) != 0) {
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geminiwdt_sc = NULL;
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aprint_error("%s: unable to register with sysmon\n",
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device_xname(sc->sc_dev));
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}
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aprint_normal("\n");
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aprint_naive("\n");
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}
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