1 /* $NetBSD: mpu_acpi.c,v 1.10 2010/03/05 14:00:17 jruoho 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 1.10 2010/03/05 14:00:17 jruoho 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 }; 51 52 CFATTACH_DECL_NEW(mpu_acpi, sizeof(struct mpu_acpi_softc), mpu_acpi_match, 53 mpu_acpi_attach, NULL, NULL); 54 55 /* 56 * Supported device IDs 57 */ 58 59 static const char * const mpu_acpi_ids[] = { 60 "PNPB006", /* Roland MPU-401 (compatible) MIDI UART */ 61 NULL 62 }; 63 64 /* 65 * mpu_acpi_match: autoconf(9) match routine 66 */ 67 static int 68 mpu_acpi_match(device_t parent, cfdata_t match, void *aux) 69 { 70 struct acpi_attach_args *aa = aux; 71 72 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 73 return 0; 74 75 return acpi_match_hid(aa->aa_node->ad_devinfo, mpu_acpi_ids); 76 } 77 78 /* 79 * mpu_acpi_attach: autoconf(9) attach routine 80 */ 81 static void 82 mpu_acpi_attach(device_t parent, device_t self, void *aux) 83 { 84 struct mpu_acpi_softc *asc = device_private(self); 85 struct mpu_softc *sc = &asc->sc_mpu; 86 struct acpi_attach_args *aa = aux; 87 struct acpi_resources res; 88 struct acpi_io *io; 89 struct acpi_irq *irq; 90 ACPI_STATUS rv; 91 92 /* parse resources */ 93 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", 94 &res, &acpi_resource_parse_ops_default); 95 if (ACPI_FAILURE(rv)) 96 return; 97 98 /* find our i/o registers */ 99 io = acpi_res_io(&res, 0); 100 if (io == NULL) { 101 aprint_error_dev(self, 102 "unable to find i/o register resource\n"); 103 goto out; 104 } 105 106 /* find our IRQ */ 107 irq = acpi_res_irq(&res, 0); 108 if (irq == NULL) { 109 aprint_error_dev(self, "unable to find irq resource\n"); 110 goto out; 111 } 112 113 sc->iot = aa->aa_iot; 114 if (bus_space_map(sc->iot, io->ar_base, io->ar_length, 0, &sc->ioh)) { 115 aprint_error_dev(self, "can't map i/o space\n"); 116 goto out; 117 } 118 119 sc->model = "Roland MPU-401 MIDI UART"; 120 sc->sc_dev = self; 121 mpu_attach(sc); 122 123 sc->arg = isa_intr_establish(aa->aa_ic, irq->ar_irq, 124 (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL, 125 IPL_AUDIO, mpu_intr, sc); 126 127 out: 128 acpi_resource_cleanup(&res); 129 } 130