1 /* $NetBSD: mpu_acpi.c,v 1.13 2011/12/09 08:56:54 mrg 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 1.13 2011/12/09 08:56:54 mrg Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/device.h> 37 #include <sys/systm.h> 38 39 #include <dev/acpi/acpivar.h> 40 41 #include <dev/ic/mpuvar.h> 42 43 #include <dev/isa/isadmavar.h> 44 45 static int mpu_acpi_match(device_t, cfdata_t, void *); 46 static void mpu_acpi_attach(device_t, device_t, void *); 47 48 struct mpu_acpi_softc { 49 struct mpu_softc sc_mpu; 50 kmutex_t sc_lock; 51 }; 52 53 CFATTACH_DECL_NEW(mpu_acpi, sizeof(struct mpu_acpi_softc), mpu_acpi_match, 54 mpu_acpi_attach, NULL, NULL); 55 56 /* 57 * Supported device IDs 58 */ 59 60 static const char * const mpu_acpi_ids[] = { 61 "PNPB006", /* Roland MPU-401 (compatible) MIDI UART */ 62 NULL 63 }; 64 65 /* 66 * mpu_acpi_match: autoconf(9) match routine 67 */ 68 static int 69 mpu_acpi_match(device_t parent, cfdata_t match, void *aux) 70 { 71 struct acpi_attach_args *aa = aux; 72 73 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 74 return 0; 75 76 return acpi_match_hid(aa->aa_node->ad_devinfo, mpu_acpi_ids); 77 } 78 79 /* 80 * mpu_acpi_attach: autoconf(9) attach routine 81 */ 82 static void 83 mpu_acpi_attach(device_t parent, device_t self, void *aux) 84 { 85 struct mpu_acpi_softc *asc = device_private(self); 86 struct mpu_softc *sc = &asc->sc_mpu; 87 struct acpi_attach_args *aa = aux; 88 struct acpi_resources res; 89 struct acpi_io *io; 90 struct acpi_irq *irq; 91 ACPI_STATUS rv; 92 93 /* parse resources */ 94 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", 95 &res, &acpi_resource_parse_ops_default); 96 if (ACPI_FAILURE(rv)) 97 return; 98 99 /* find our i/o registers */ 100 io = acpi_res_io(&res, 0); 101 if (io == NULL) { 102 aprint_error_dev(self, 103 "unable to find i/o register resource\n"); 104 goto out; 105 } 106 107 /* find our IRQ */ 108 irq = acpi_res_irq(&res, 0); 109 if (irq == NULL) { 110 aprint_error_dev(self, "unable to find irq resource\n"); 111 goto out; 112 } 113 114 sc->iot = aa->aa_iot; 115 if (bus_space_map(sc->iot, io->ar_base, io->ar_length, 0, &sc->ioh)) { 116 aprint_error_dev(self, "can't map i/o space\n"); 117 goto out; 118 } 119 120 sc->model = "Roland MPU-401 MIDI UART"; 121 sc->sc_dev = self; 122 sc->lock = &asc->sc_lock; 123 mutex_init(&asc->sc_lock, MUTEX_DEFAULT, IPL_AUDIO); 124 mpu_attach(sc); 125 126 sc->arg = isa_intr_establish(aa->aa_ic, irq->ar_irq, 127 (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL, 128 IPL_AUDIO, mpu_intr, sc); 129 130 out: 131 acpi_resource_cleanup(&res); 132 } 133