1 /* $NetBSD: mpu_acpi.c,v 1.9 2009/02/17 12:46:01 jmcneill 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 1.9 2009/02/17 12:46:01 jmcneill 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 } 139