NetBSD/sys/dev/isa/opl_isa.c

122 lines
3.4 KiB
C

/* $NetBSD: opl_isa.c,v 1.21 2012/04/09 10:18:17 plunky Exp $ */
/*-
* Copyright (c) 1999, 2008 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson, and by Andrew Doran.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: opl_isa.c,v 1.21 2012/04/09 10:18:17 plunky Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <sys/conf.h>
#include <sys/select.h>
#include <sys/audioio.h>
#include <sys/midiio.h>
#include <sys/bus.h>
#include <dev/audio_if.h>
#include <dev/midi_if.h>
#include <dev/ic/oplreg.h>
#include <dev/ic/oplvar.h>
#include <dev/isa/isavar.h>
#define OPL_SIZE 4
int opl_isa_match(device_t, cfdata_t, void *);
void opl_isa_attach(device_t, device_t, void *);
struct opl_isa_softc {
struct opl_softc sc_opl;
kmutex_t sc_lock;
};
CFATTACH_DECL_NEW(opl_isa, sizeof(struct opl_isa_softc),
opl_isa_match, opl_isa_attach, NULL, NULL);
int
opl_isa_match(device_t parent, cfdata_t match, void *aux)
{
struct isa_attach_args *ia = aux;
bus_space_handle_t ioh;
int r;
if (ia->ia_nio < 1)
return (0);
if (ISA_DIRECT_CONFIG(ia))
return (0);
if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
return (0);
if (bus_space_map(ia->ia_iot, ia->ia_io[0].ir_addr, OPL_SIZE, 0, &ioh))
return (0);
r = opl_match(ia->ia_iot, ioh, 0);
bus_space_unmap(ia->ia_iot, ioh, OPL_SIZE);
if (r != 0) {
ia->ia_nio = 1;
ia->ia_io[0].ir_size = OPL_SIZE;
ia->ia_nirq = 0;
ia->ia_niomem = 0;
ia->ia_ndrq = 0;
}
return (r);
}
void
opl_isa_attach(device_t parent, device_t self, void *aux)
{
struct opl_softc *sc = device_private(self);
struct opl_isa_softc *isa = device_private(self);
struct isa_attach_args *ia = aux;
sc->dev = self;
sc->iot = ia->ia_iot;
if (bus_space_map(sc->iot, ia->ia_io[0].ir_addr, OPL_SIZE,
0, &sc->ioh)) {
aprint_error("opl_isa_attach: bus_space_map failed\n");
return;
}
sc->offs = 0;
sc->lock = &isa->sc_lock;
mutex_init(&isa->sc_lock, MUTEX_DEFAULT, IPL_NONE);
opl_attach(sc);
}