1 /* $NetBSD: mpu_isa.c,v 1.20 2008/04/28 20:23:52 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 1999 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: mpu_isa.c,v 1.20 2008/04/28 20:23:52 martin Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/systm.h> 37 #include <sys/kernel.h> 38 #include <sys/errno.h> 39 #include <sys/device.h> 40 #include <sys/proc.h> 41 #include <sys/conf.h> 42 #include <sys/midiio.h> 43 44 #include <sys/bus.h> 45 46 #include <dev/midi_if.h> 47 48 #include <dev/isa/isavar.h> 49 #include <dev/ic/mpuvar.h> 50 51 struct mpu_isa_softc { 52 device_t sc_dev; 53 struct mpu_softc sc_mpu; /* generic part */ 54 void *sc_ih; /* ISA interrupt handler */ 55 }; 56 57 static int mpu_isa_match(device_t, cfdata_t, void *); 58 static void mpu_isa_attach(device_t, device_t, void *); 59 60 CFATTACH_DECL_NEW(mpu_isa, sizeof(struct mpu_isa_softc), 61 mpu_isa_match, mpu_isa_attach, NULL, NULL); 62 63 static int 64 mpu_isa_match(device_t parent, cfdata_t match, void *aux) 65 { 66 struct isa_attach_args *ia = aux; 67 struct mpu_isa_softc sc; 68 int r; 69 70 if (ia->ia_nio < 1) 71 return 0; 72 if (ia->ia_nirq < 1) 73 return 0; 74 75 if (ISA_DIRECT_CONFIG(ia)) 76 return 0; 77 78 if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT) 79 return 0; 80 if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ) 81 return 0; 82 83 memset(&sc, 0, sizeof sc); 84 sc.sc_mpu.iot = ia->ia_iot; 85 if (bus_space_map(sc.sc_mpu.iot, ia->ia_io[0].ir_addr, MPU401_NPORT, 0, 86 &sc.sc_mpu.ioh)) 87 return 0; 88 r = mpu_find(&sc.sc_mpu); 89 bus_space_unmap(sc.sc_mpu.iot, sc.sc_mpu.ioh, MPU401_NPORT); 90 if (r) { 91 ia->ia_nio = 1; 92 ia->ia_io[0].ir_size = MPU401_NPORT; 93 94 ia->ia_nirq = 1; 95 96 ia->ia_niomem = 0; 97 ia->ia_ndrq = 0; 98 } 99 return r; 100 } 101 102 static void 103 mpu_isa_attach(device_t parent, device_t self, void *aux) 104 { 105 struct mpu_isa_softc *sc = device_private(self); 106 struct isa_attach_args *ia = aux; 107 108 aprint_normal("\n"); 109 110 if (bus_space_map(sc->sc_mpu.iot, ia->ia_io[0].ir_addr, MPU401_NPORT, 111 0, &sc->sc_mpu.ioh)) { 112 printf("mpu_isa_attach: bus_space_map failed\n"); 113 return; 114 } 115 116 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq, 117 IST_EDGE, IPL_AUDIO, mpu_intr, &sc->sc_mpu); 118 119 sc->sc_mpu.model = "Roland MPU-401 MIDI UART"; 120 sc->sc_dev = self; 121 mpu_attach(&sc->sc_mpu); 122 } 123