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mpu_isa.c revision 1.17.16.1 
      1 /*	$NetBSD: mpu_isa.c,v 1.17.16.1 2008/04/03 12:42:44 mjf 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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 __KERNEL_RCSID(0, "$NetBSD: mpu_isa.c,v 1.17.16.1 2008/04/03 12:42:44 mjf Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/systm.h>
     44 #include <sys/kernel.h>
     45 #include <sys/errno.h>
     46 #include <sys/device.h>
     47 #include <sys/proc.h>
     48 #include <sys/conf.h>
     49 #include <sys/midiio.h>
     50 
     51 #include <sys/bus.h>
     52 
     53 #include <dev/midi_if.h>
     54 
     55 #include <dev/isa/isavar.h>
     56 #include <dev/ic/mpuvar.h>
     57 
     58 struct mpu_isa_softc {
     59 	device_t sc_dev;
     60 	struct mpu_softc sc_mpu;	/* generic part */
     61 	void	*sc_ih;			/* ISA interrupt handler */
     62 };
     63 
     64 static int	mpu_isa_match(device_t, cfdata_t, void *);
     65 static void	mpu_isa_attach(device_t, device_t, void *);
     66 
     67 CFATTACH_DECL_NEW(mpu_isa, sizeof(struct mpu_isa_softc),
     68     mpu_isa_match, mpu_isa_attach, NULL, NULL);
     69 
     70 static int
     71 mpu_isa_match(device_t parent, cfdata_t match, void *aux)
     72 {
     73 	struct isa_attach_args *ia = aux;
     74 	struct mpu_isa_softc sc;
     75 	int r;
     76 
     77 	if (ia->ia_nio < 1)
     78 		return 0;
     79 	if (ia->ia_nirq < 1)
     80 		return 0;
     81 
     82 	if (ISA_DIRECT_CONFIG(ia))
     83 		return 0;
     84 
     85 	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
     86 		return 0;
     87 	if (ia->ia_irq[0].ir_irq == ISA_UNKNOWN_IRQ)
     88 		return 0;
     89 
     90 	memset(&sc, 0, sizeof sc);
     91 	sc.sc_mpu.iot = ia->ia_iot;
     92 	if (bus_space_map(sc.sc_mpu.iot, ia->ia_io[0].ir_addr, MPU401_NPORT, 0,
     93 			  &sc.sc_mpu.ioh))
     94 		return 0;
     95 	r = mpu_find(&sc.sc_mpu);
     96         bus_space_unmap(sc.sc_mpu.iot, sc.sc_mpu.ioh, MPU401_NPORT);
     97 	if (r) {
     98 		ia->ia_nio = 1;
     99 		ia->ia_io[0].ir_size = MPU401_NPORT;
    100 
    101 		ia->ia_nirq = 1;
    102 
    103 		ia->ia_niomem = 0;
    104 		ia->ia_ndrq = 0;
    105 	}
    106 	return r;
    107 }
    108 
    109 static void
    110 mpu_isa_attach(device_t parent, device_t self, void *aux)
    111 {
    112 	struct mpu_isa_softc *sc = device_private(self);
    113 	struct isa_attach_args *ia = aux;
    114 
    115 	aprint_normal("\n");
    116 
    117 	if (bus_space_map(sc->sc_mpu.iot, ia->ia_io[0].ir_addr, MPU401_NPORT,
    118 	    0, &sc->sc_mpu.ioh)) {
    119 		printf("mpu_isa_attach: bus_space_map failed\n");
    120 		return;
    121 	}
    122 
    123 	sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq[0].ir_irq,
    124 	    IST_EDGE, IPL_AUDIO, mpu_intr, &sc->sc_mpu);
    125 
    126 	sc->sc_mpu.model = "Roland MPU-401 MIDI UART";
    127 	sc->sc_dev = self;
    128 	mpu_attach(&sc->sc_mpu);
    129 }
    130