91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
/* $NetBSD: amdpcib_hpet.c,v 1.1 2007/03/08 14:26:27 njoly Exp $ */
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/*
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* Copyright (c) 2006 Nicolas Joly
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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. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: amdpcib_hpet.c,v 1.1 2007/03/08 14:26:27 njoly Exp $");
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/time.h>
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#include <sys/timetc.h>
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#include <machine/bus.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcidevs.h>
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#include <dev/ic/hpetvar.h>
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static int amdpcib_hpet_match(struct device *, struct cfdata *, void *);
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static void amdpcib_hpet_attach(struct device *, struct device *, void *);
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CFATTACH_DECL(amdpcib_hpet, sizeof(struct hpet_softc), amdpcib_hpet_match,
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amdpcib_hpet_attach, NULL, NULL);
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static int
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amdpcib_hpet_match(struct device *parent, struct cfdata *match, void *aux) {
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return 1;
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}
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static void
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amdpcib_hpet_attach(struct device *parent, struct device *self, void *aux) {
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struct hpet_softc *sc;
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struct pci_attach_args *pa;
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pcireg_t conf, addr;
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sc = (struct hpet_softc *)self;
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pa = (struct pci_attach_args *)aux;
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aprint_naive("\n");
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aprint_normal(": HPET timer\n");
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conf = pci_conf_read(pa->pa_pc, pa->pa_tag, 0xa0);
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if ((conf & 1) == 0) {
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printf("%s: HPET timer is disabled\n", sc->sc_dev.dv_xname);
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return;
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}
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sc->sc_memt = pa->pa_memt;
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addr = conf & 0xfffffc00;
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if (bus_space_map(sc->sc_memt, addr, 1024, 0,
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&sc->sc_memh)) {
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printf("%s: failed to map mem\n", sc->sc_dev.dv_xname);
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return;
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}
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#ifdef __HAVE_TIMECOUNTER
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hpet_attach_subr(sc);
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#endif
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}
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