sys/dev/acpi/pcppi_acpi.c

   1 /* $NetBSD: pcppi_acpi.c,v 1.10 2008/03/04 16:35:18 cube Exp $ */
   2
   3 /*
   4  * Copyright (c) 2002 Jared D. McNeill <jmcneill@invisible.ca>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. The name of the author may not be used to endorse or promote products
  13  *    derived from this software without specific prior written permission.
  14  *
  15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
  20  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  22  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  23  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  25  * SUCH DAMAGE.
  26  */
  27
  28 /*
  29  * ACPI pcppi(4) attachment based on lpt_acpi.c by Jared D. McNeill.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: pcppi_acpi.c,v 1.10 2008/03/04 16:35:18 cube Exp $");
  34
  35 #include <sys/param.h>
  36 #include <sys/systm.h>
  37 #include <sys/errno.h>
  38 #include <sys/ioctl.h>
  39 #include <sys/device.h>
  40 #include <sys/proc.h>
  41
  42 #include <sys/bus.h>
  43
  44 #include <dev/acpi/acpica.h>
  45 #include <dev/acpi/acpireg.h>
  46 #include <dev/acpi/acpivar.h>
  47
  48 #include <dev/isa/pcppivar.h>
  49
  50 static int      pcppi_acpi_match(device_t, cfdata_t, void *);
  51 static void     pcppi_acpi_attach(device_t, device_t, void *);
  52
  53 struct pcppi_acpi_softc {
  54         struct pcppi_softc sc_pcppi;
  55 };
  56
  57 CFATTACH_DECL_NEW(pcppi_acpi, sizeof(struct pcppi_acpi_softc),
  58     pcppi_acpi_match, pcppi_acpi_attach, pcppi_detach, NULL);
  59
  60 /*
  61  * Supported device IDs
  62  */
  63
  64 static const char * const pcppi_acpi_ids[] = {
  65         "PNP0800",      /* AT-style speaker sound */
  66         NULL
  67 };
  68
  69 /*
  70  * pcppi_acpi_match: autoconf(9) match routine
  71  */
  72 static int
  73 pcppi_acpi_match(device_t parent, cfdata_t match, void *aux)
  74 {
  75         struct acpi_attach_args *aa = aux;
  76
  77         if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
  78                 return 0;
  79
  80         return acpi_match_hid(aa->aa_node->ad_devinfo, pcppi_acpi_ids);
  81 }
  82
  83 /*
  84  * pcppi_acpi_attach: autoconf(9) attach routine
  85  */
  86 static void
  87 pcppi_acpi_attach(device_t parent, device_t self, void *aux)
  88 {
  89         struct pcppi_acpi_softc *asc = device_private(self);
  90         struct pcppi_softc *sc = &asc->sc_pcppi;
  91         struct acpi_attach_args *aa = aux;
  92         struct acpi_resources res;
  93         struct acpi_io *io;
  94         ACPI_STATUS rv;
  95
  96         sc->sc_dv = self;
  97
  98         /* parse resources */
  99         rv = acpi_resource_parse(sc->sc_dv, aa->aa_node->ad_handle, "_CRS",
 100             &res, &acpi_resource_parse_ops_default);
 101         if (ACPI_FAILURE(rv))
 102                 return;
 103
 104         /* find our i/o registers */
 105         io = acpi_res_io(&res, 0);
 106         if (io == NULL) {
 107                 aprint_error_dev(self,
 108                     "unable to find i/o register resource\n");
 109                 goto out;
 110         }
 111
 112         sc->sc_iot = aa->aa_iot;
 113         sc->sc_size = io->ar_length;
 114         if (bus_space_map(sc->sc_iot, io->ar_base, sc->sc_size,
 115                     0, &sc->sc_ppi_ioh)) {
 116                 aprint_error_dev(self, "can't map i/o space\n");
 117                 goto out;
 118         }
 119
 120         pcppi_attach(sc);
 121
 122  out:
 123         acpi_resource_cleanup(&res);
 124 }