115 lines
3.3 KiB
C
115 lines
3.3 KiB
C
/* $NetBSD: hpet_acpi.c,v 1.4 2009/02/17 12:46:01 jmcneill 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: hpet_acpi.c,v 1.4 2009/02/17 12:46:01 jmcneill Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/device.h>
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#include <sys/bus.h>
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#include <dev/acpi/acpica.h>
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#include <dev/acpi/acpireg.h>
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#include <dev/acpi/acpivar.h>
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#include <sys/time.h>
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#include <sys/timetc.h>
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#include <dev/ic/hpetvar.h>
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static int hpet_acpi_match(device_t, cfdata_t, void *);
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static void hpet_acpi_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(hpet_acpi, sizeof(struct hpet_softc), hpet_acpi_match,
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hpet_acpi_attach, NULL, NULL);
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/*
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* Supported device IDs
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*/
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static const char * const hpet_acpi_ids[] = {
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"PNP0103",
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NULL
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};
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/*
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* hpet_acpi_match: autoconf(9) match routine
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*/
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static int
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hpet_acpi_match(device_t parent, cfdata_t match, void *aux)
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{
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struct acpi_attach_args *aa = aux;
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if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
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return 0;
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return acpi_match_hid(aa->aa_node->ad_devinfo, hpet_acpi_ids);
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}
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static void
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hpet_acpi_attach(device_t parent, device_t self, void *aux)
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{
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struct hpet_softc *sc = device_private(self);
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struct acpi_attach_args *aa = aux;
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struct acpi_resources res;
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struct acpi_mem *mem;
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ACPI_STATUS rv;
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/* parse resources */
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rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
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&res, &acpi_resource_parse_ops_default);
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if (ACPI_FAILURE(rv))
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return;
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/* find our mem registers */
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mem = acpi_res_mem(&res, 0);
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if (mem == NULL) {
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aprint_error_dev(self,
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"unable to find mem register resource\n");
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goto out;
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}
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sc->sc_memt = aa->aa_memt;
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if (bus_space_map(sc->sc_memt, mem->ar_base, mem->ar_length,
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0, &sc->sc_memh)) {
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aprint_error_dev(self, "can't map mem space\n");
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goto out;
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}
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hpet_attach_subr(self);
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out:
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acpi_resource_cleanup(&res);
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}
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