sys/dev/acpi/attimer_acpi.c

   1 /* $NetBSD: attimer_acpi.c,v 1.12 2009/02/17 12:46:01 jmcneill Exp $ */
   2
   3 /*
   4  * Copyright (c) 2005 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Quentin Garnier.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * Copyright (c) 2002 Jared D. McNeill <jmcneill@invisible.ca>
  34  * All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. The name of the author may not be used to endorse or promote products
  42  *    derived from this software without specific prior written permission.
  43  *
  44  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  45  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  46  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  47  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  48  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  49  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  50  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  51  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  52  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  53  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  54  * SUCH DAMAGE.
  55  */
  56
  57 /*
  58  * ACPI attimer(4) attachment based on lpt_acpi.c by Jared D. McNeill.
  59  */
  60
  61 #include <sys/cdefs.h>
  62 __KERNEL_RCSID(0, "$NetBSD: attimer_acpi.c,v 1.12 2009/02/17 12:46:01 jmcneill Exp $");
  63
  64 #include <sys/param.h>
  65 #include <sys/systm.h>
  66 #include <sys/errno.h>
  67 #include <sys/ioctl.h>
  68 #include <sys/device.h>
  69 #include <sys/proc.h>
  70
  71 #include <sys/bus.h>
  72
  73 #include <dev/acpi/acpica.h>
  74 #include <dev/acpi/acpireg.h>
  75 #include <dev/acpi/acpivar.h>
  76
  77 #include <dev/ic/attimervar.h>
  78
  79 static int      attimer_acpi_match(device_t, cfdata_t, void *);
  80 static void     attimer_acpi_attach(device_t, device_t, void *);
  81
  82 CFATTACH_DECL3_NEW(attimer_acpi, sizeof(struct attimer_softc),
  83     attimer_acpi_match, attimer_acpi_attach, attimer_detach, NULL, NULL, NULL,
  84     DVF_DETACH_SHUTDOWN);
  85
  86 /*
  87  * Supported device IDs
  88  */
  89
  90 static const char * const attimer_acpi_ids[] = {
  91         "PNP0100",      /* AT Timer */
  92         NULL
  93 };
  94
  95 /*
  96  * attimer_acpi_match: autoconf(9) match routine
  97  */
  98 static int
  99 attimer_acpi_match(device_t parent, cfdata_t match, void *aux)
 100 {
 101         struct acpi_attach_args *aa = aux;
 102
 103         if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
 104                 return 0;
 105
 106         return acpi_match_hid(aa->aa_node->ad_devinfo, attimer_acpi_ids);
 107 }
 108
 109 /*
 110  * attimer_acpi_attach: autoconf(9) attach routine
 111  */
 112 static void
 113 attimer_acpi_attach(device_t parent, device_t self, void *aux)
 114 {
 115         struct attimer_softc *sc = device_private(self);
 116         struct acpi_attach_args *aa = aux;
 117         struct acpi_resources res;
 118         struct acpi_io *io;
 119         ACPI_STATUS rv;
 120
 121         sc->sc_dev = self;
 122
 123         /* parse resources */
 124         rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
 125             &res, &acpi_resource_parse_ops_default);
 126         if (ACPI_FAILURE(rv))
 127                 return;
 128
 129         /* find our i/o registers */
 130         io = acpi_res_io(&res, 0);
 131         if (io == NULL) {
 132                 aprint_error_dev(self,
 133                     "unable to find i/o register resource\n");
 134                 goto out;
 135         }
 136
 137         sc->sc_iot = aa->aa_iot;
 138         sc->sc_size = io->ar_length;
 139         if (bus_space_map(sc->sc_iot, io->ar_base, sc->sc_size,
 140                     0, &sc->sc_ioh) != 0) {
 141                 aprint_error_dev(self, "can't map i/o space\n");
 142                 goto out;
 143         }
 144
 145         attimer_attach(sc);
 146
 147  out:
 148         acpi_resource_cleanup(&res);
 149 }