124 lines
3.5 KiB
C
124 lines
3.5 KiB
C
/* $NetBSD: joy_isa.c,v 1.14 2011/12/05 19:20:54 christos Exp $ */
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/*-
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* Copyright (c) 1995 Jean-Marc Zucconi
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* All rights reserved.
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*
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* Ported to NetBSD by Matthieu Herrb <matthieu@laas.fr>. Additional
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* modification by Jason R. Thorpe <thorpej@NetBSD.org>.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: joy_isa.c,v 1.14 2011/12/05 19:20:54 christos Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/device.h>
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#include <sys/bus.h>
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#include <dev/isa/isavar.h>
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#include <dev/ic/joyvar.h>
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#define JOY_NPORTS 1
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struct joy_isa_softc {
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struct joy_softc sc_joy;
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kmutex_t sc_lock;
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};
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static int joy_isa_probe(device_t, cfdata_t, void *);
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static void joy_isa_attach(device_t, device_t, void *);
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CFATTACH_DECL_NEW(joy_isa, sizeof(struct joy_isa_softc),
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joy_isa_probe, joy_isa_attach, NULL, NULL);
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static int
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joy_isa_probe(device_t parent, cfdata_t match, void *aux)
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{
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struct isa_attach_args *ia = aux;
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bus_space_tag_t iot = ia->ia_iot;
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bus_space_handle_t ioh;
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int rval = 0;
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if (ia->ia_nio < 1)
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return 0;
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if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
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return 0;
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if (bus_space_map(iot, ia->ia_io[0].ir_addr, JOY_NPORTS, 0, &ioh))
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return 0;
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#ifdef WANT_JOYSTICK_CONNECTED
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bus_space_write_1(iot, ioh, 0, 0xff);
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DELAY(10000); /* 10 ms delay */
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if ((bus_space_read_1(iot, ioh, 0) & 0x0f) != 0x0f)
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rval = 1;
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#else
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rval = 1;
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#endif
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bus_space_unmap(iot, ioh, JOY_NPORTS);
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if (rval) {
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ia->ia_nio = 1;
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ia->ia_io[0].ir_size = JOY_NPORTS;
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ia->ia_niomem = 0;
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ia->ia_nirq = 0;
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ia->ia_ndrq = 0;
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}
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return rval;
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}
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static void
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joy_isa_attach(device_t parent, device_t self, void *aux)
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{
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struct joy_isa_softc *isc = device_private(self);
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struct joy_softc *sc = &isc->sc_joy;
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struct isa_attach_args *ia = aux;
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aprint_normal("\n");
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sc->sc_iot = ia->ia_iot;
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sc->sc_dev = self;
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if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, JOY_NPORTS, 0,
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&sc->sc_ioh)) {
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aprint_error_dev(self, "can't map i/o space\n");
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return;
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}
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mutex_init(&isc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
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sc->sc_lock = &isc->sc_lock;
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joyattach(sc);
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}
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