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mpu_isa.c revision 1.19.2.1 
      1 /*	$NetBSD: mpu_isa.c,v 1.19.2.1 2008/05/18 12:34:03 yamt 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 1.19.2.1 2008/05/18 12:34:03 yamt 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