sys/dev/acpi/mpu_acpi.c

   1 /* $NetBSD: mpu_acpi.c,v 1.8 2008/03/27 10:22:00 xtraeme 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 mpu(4) attachment based in lpt_acpi.c by Jared D. McNeill.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 __KERNEL_RCSID(0, "$NetBSD: mpu_acpi.c,v 1.8 2008/03/27 10:22:00 xtraeme 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/syslog.h>
  40 #include <sys/device.h>
  41 #include <sys/proc.h>
  42
  43 #include <sys/bus.h>
  44
  45 #include <dev/isa/isavar.h>
  46 #include <dev/isa/isadmavar.h>
  47
  48 #include <dev/acpi/acpica.h>
  49 #include <dev/acpi/acpireg.h>
  50 #include <dev/acpi/acpivar.h>
  51
  52 #include <dev/ic/mpuvar.h>
  53
  54 static int      mpu_acpi_match(device_t, cfdata_t, void *);
  55 static void     mpu_acpi_attach(device_t, device_t, void *);
  56
  57 struct mpu_acpi_softc {
  58         struct mpu_softc sc_mpu;
  59 };
  60
  61 CFATTACH_DECL_NEW(mpu_acpi, sizeof(struct mpu_acpi_softc), mpu_acpi_match,
  62     mpu_acpi_attach, NULL, NULL);
  63
  64 /*
  65  * Supported device IDs
  66  */
  67
  68 static const char * const mpu_acpi_ids[] = {
  69         "PNPB006",      /* Roland MPU-401 (compatible) MIDI UART */
  70         NULL
  71 };
  72
  73 /*
  74  * mpu_acpi_match: autoconf(9) match routine
  75  */
  76 static int
  77 mpu_acpi_match(device_t parent, cfdata_t match, void *aux)
  78 {
  79         struct acpi_attach_args *aa = aux;
  80
  81         if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
  82                 return 0;
  83
  84         return acpi_match_hid(aa->aa_node->ad_devinfo, mpu_acpi_ids);
  85 }
  86
  87 /*
  88  * mpu_acpi_attach: autoconf(9) attach routine
  89  */
  90 static void
  91 mpu_acpi_attach(device_t parent, device_t self, void *aux)
  92 {
  93         struct mpu_acpi_softc *asc = device_private(self);
  94         struct mpu_softc *sc = &asc->sc_mpu;
  95         struct acpi_attach_args *aa = aux;
  96         struct acpi_resources res;
  97         struct acpi_io *io;
  98         struct acpi_irq *irq;
  99         ACPI_STATUS rv;
 100
 101         /* parse resources */
 102         rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
 103             &res, &acpi_resource_parse_ops_default);
 104         if (ACPI_FAILURE(rv))
 105                 return;
 106
 107         /* find our i/o registers */
 108         io = acpi_res_io(&res, 0);
 109         if (io == NULL) {
 110                 aprint_error_dev(self,
 111                     "unable to find i/o register resource\n");
 112                 goto out;
 113         }
 114
 115         /* find our IRQ */
 116         irq = acpi_res_irq(&res, 0);
 117         if (irq == NULL) {
 118                 aprint_error_dev(self, "unable to find irq resource\n");
 119                 goto out;
 120         }
 121
 122         sc->iot = aa->aa_iot;
 123         if (bus_space_map(sc->iot, io->ar_base, io->ar_length, 0, &sc->ioh)) {
 124                 aprint_error_dev(self, "can't map i/o space\n");
 125                 goto out;
 126         }
 127
 128         sc->model = "Roland MPU-401 MIDI UART";
 129         sc->sc_dev = self;
 130         mpu_attach(sc);
 131
 132         sc->arg = isa_intr_establish(aa->aa_ic, irq->ar_irq,
 133             (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL,
 134             IPL_AUDIO, mpu_intr, sc);
 135
 136  out:
 137         acpi_resource_cleanup(&res);
 138 }