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opl_isa.c revision 1.22 
      1 /*	$NetBSD: opl_isa.c,v 1.22 2019/05/08 13:40:18 isaki Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999, 2008 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, and by Andrew Doran.
      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: opl_isa.c,v 1.22 2019/05/08 13:40:18 isaki 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/malloc.h>
     41 #include <sys/proc.h>
     42 #include <sys/conf.h>
     43 #include <sys/select.h>
     44 #include <sys/audioio.h>
     45 #include <sys/midiio.h>
     46 
     47 #include <sys/bus.h>
     48 
     49 #include <dev/audio/audio_if.h>
     50 #include <dev/midi_if.h>
     51 
     52 #include <dev/ic/oplreg.h>
     53 #include <dev/ic/oplvar.h>
     54 
     55 #include <dev/isa/isavar.h>
     56 
     57 #define OPL_SIZE 4
     58 
     59 int	opl_isa_match(device_t, cfdata_t, void *);
     60 void	opl_isa_attach(device_t, device_t, void *);
     61 
     62 struct opl_isa_softc {
     63 	struct opl_softc	sc_opl;
     64 	kmutex_t		sc_lock;
     65 };
     66 
     67 CFATTACH_DECL_NEW(opl_isa, sizeof(struct opl_isa_softc),
     68     opl_isa_match, opl_isa_attach, NULL, NULL);
     69 
     70 int
     71 opl_isa_match(device_t parent, cfdata_t match, void *aux)
     72 {
     73 	struct isa_attach_args *ia = aux;
     74 	bus_space_handle_t ioh;
     75 	int r;
     76 
     77 	if (ia->ia_nio < 1)
     78 		return (0);
     79 
     80 	if (ISA_DIRECT_CONFIG(ia))
     81 		return (0);
     82 
     83 	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
     84 		return (0);
     85 
     86 	if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, OPL_SIZE, 0, &ioh))
     87 		return (0);
     88 	r = opl_match(ia->ia_iot, ioh, 0);
     89         bus_space_unmap(ia->ia_iot, ioh, OPL_SIZE);
     90 	if (r != 0) {
     91 		ia->ia_nio = 1;
     92 		ia->ia_io[0].ir_size = OPL_SIZE;
     93 
     94 		ia->ia_nirq = 0;
     95 		ia->ia_niomem = 0;
     96 		ia->ia_ndrq = 0;
     97 	}
     98 	return (r);
     99 }
    100 
    101 void
    102 opl_isa_attach(device_t parent, device_t self, void *aux)
    103 {
    104 	struct opl_softc *sc = device_private(self);
    105 	struct opl_isa_softc *isa = device_private(self);
    106 	struct isa_attach_args *ia = aux;
    107 
    108 	sc->dev = self;
    109 	sc->iot = ia->ia_iot;
    110 
    111 	if (bus_space_map(sc->iot, ia->ia_io[0].ir_addr, OPL_SIZE,
    112 	    0, &sc->ioh)) {
    113 		aprint_error("opl_isa_attach: bus_space_map failed\n");
    114 		return;
    115 	}
    116 	sc->offs = 0;
    117 	sc->lock = &isa->sc_lock;
    118 	mutex_init(&isa->sc_lock, MUTEX_DEFAULT, IPL_NONE);
    119 
    120 	opl_attach(sc);
    121 }
    122