1 /* $NetBSD: mpu_acpi.c,v 1.16 2021/01/29 15:49:55 thorpej 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 1.16 2021/01/29 15:49:55 thorpej 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 #include <dev/acpi/acpi_intr.h> 41 42 #include <dev/ic/mpuvar.h> 43 44 #include <dev/isa/isadmavar.h> 45 46 static int mpu_acpi_match(device_t, cfdata_t, void *); 47 static void mpu_acpi_attach(device_t, device_t, void *); 48 49 struct mpu_acpi_softc { 50 struct mpu_softc sc_mpu; 51 kmutex_t sc_lock; 52 }; 53 54 CFATTACH_DECL_NEW(mpu_acpi, sizeof(struct mpu_acpi_softc), mpu_acpi_match, 55 mpu_acpi_attach, NULL, NULL); 56 57 /* 58 * Supported device IDs 59 */ 60 61 static const struct device_compatible_entry compat_data[] = { 62 { .compat = "PNPB006" }, /* Roland MPU-401 (compatible) MIDI UART */ 63 DEVICE_COMPAT_EOL 64 }; 65 66 /* 67 * mpu_acpi_match: autoconf(9) match routine 68 */ 69 static int 70 mpu_acpi_match(device_t parent, cfdata_t match, void *aux) 71 { 72 struct acpi_attach_args *aa = aux; 73 74 return acpi_compatible_match(aa, compat_data); 75 } 76 77 /* 78 * mpu_acpi_attach: autoconf(9) attach routine 79 */ 80 static void 81 mpu_acpi_attach(device_t parent, device_t self, void *aux) 82 { 83 struct mpu_acpi_softc *asc = device_private(self); 84 struct mpu_softc *sc = &asc->sc_mpu; 85 struct acpi_attach_args *aa = aux; 86 struct acpi_resources res; 87 struct acpi_io *io; 88 ACPI_STATUS rv; 89 90 /* parse resources */ 91 rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", 92 &res, &acpi_resource_parse_ops_default); 93 if (ACPI_FAILURE(rv)) 94 return; 95 96 /* find our i/o registers */ 97 io = acpi_res_io(&res, 0); 98 if (io == NULL) { 99 aprint_error_dev(self, 100 "unable to find i/o register resource\n"); 101 goto out; 102 } 103 104 sc->iot = aa->aa_iot; 105 if (bus_space_map(sc->iot, io->ar_base, io->ar_length, 0, &sc->ioh)) { 106 aprint_error_dev(self, "can't map i/o space\n"); 107 goto out; 108 } 109 110 sc->model = "Roland MPU-401 MIDI UART"; 111 sc->sc_dev = self; 112 sc->lock = &asc->sc_lock; 113 mutex_init(&asc->sc_lock, MUTEX_DEFAULT, IPL_AUDIO); 114 mpu_attach(sc); 115 116 sc->arg = acpi_intr_establish(self, 117 (uint64_t)(uintptr_t)aa->aa_node->ad_handle, 118 IPL_AUDIO, true, mpu_intr, sc, device_xname(self)); 119 if (sc->arg == NULL) { 120 aprint_error_dev(self, "unable to establish interrupt\n"); 121 goto out; 122 } 123 124 out: 125 acpi_resource_cleanup(&res); 126 } 127