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      1 /*	$NetBSD: joy_isa.c,v 1.14 2011/12/05 19:20:54 christos Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1995 Jean-Marc Zucconi
      5  * All rights reserved.
      6  *
      7  * Ported to NetBSD by Matthieu Herrb <matthieu (at) laas.fr>.  Additional
      8  * modification by Jason R. Thorpe <thorpej (at) NetBSD.org>.
      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  *    in this position and unchanged.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  *
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 __KERNEL_RCSID(0, "$NetBSD: joy_isa.c,v 1.14 2011/12/05 19:20:54 christos Exp $");
     37 
     38 #include <sys/param.h>
     39 #include <sys/systm.h>
     40 #include <sys/kernel.h>
     41 #include <sys/device.h>
     42 
     43 #include <sys/bus.h>
     44 
     45 #include <dev/isa/isavar.h>
     46 
     47 #include <dev/ic/joyvar.h>
     48 
     49 #define JOY_NPORTS    1
     50 
     51 struct joy_isa_softc {
     52 	struct joy_softc	sc_joy;
     53 	kmutex_t		sc_lock;
     54 };
     55 
     56 static int	joy_isa_probe(device_t, cfdata_t, void *);
     57 static void	joy_isa_attach(device_t, device_t, void *);
     58 
     59 CFATTACH_DECL_NEW(joy_isa, sizeof(struct joy_isa_softc),
     60     joy_isa_probe, joy_isa_attach, NULL, NULL);
     61 
     62 static int
     63 joy_isa_probe(device_t parent, cfdata_t match, void *aux)
     64 {
     65 	struct isa_attach_args *ia = aux;
     66 	bus_space_tag_t iot = ia->ia_iot;
     67 	bus_space_handle_t ioh;
     68 	int rval = 0;
     69 
     70 	if (ia->ia_nio < 1)
     71 		return 0;
     72 
     73 	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
     74 		return 0;
     75 
     76 	if (bus_space_map(iot, ia->ia_io[0].ir_addr, JOY_NPORTS, 0, &ioh))
     77 		return 0;
     78 
     79 #ifdef WANT_JOYSTICK_CONNECTED
     80 	bus_space_write_1(iot, ioh, 0, 0xff);
     81 	DELAY(10000);		/* 10 ms delay */
     82 	if ((bus_space_read_1(iot, ioh, 0) & 0x0f) != 0x0f)
     83 		rval = 1;
     84 #else
     85 	rval = 1;
     86 #endif
     87 
     88 	bus_space_unmap(iot, ioh, JOY_NPORTS);
     89 
     90 	if (rval) {
     91 		ia->ia_nio = 1;
     92 		ia->ia_io[0].ir_size = JOY_NPORTS;
     93 
     94 		ia->ia_niomem = 0;
     95 		ia->ia_nirq = 0;
     96 		ia->ia_ndrq = 0;
     97 	}
     98 	return rval;
     99 }
    100 
    101 static void
    102 joy_isa_attach(device_t parent, device_t self, void *aux)
    103 {
    104 	struct joy_isa_softc *isc = device_private(self);
    105 	struct joy_softc *sc = &isc->sc_joy;
    106 	struct isa_attach_args *ia = aux;
    107 
    108 	aprint_normal("\n");
    109 
    110 	sc->sc_iot = ia->ia_iot;
    111 	sc->sc_dev = self;
    112 
    113 	if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, JOY_NPORTS, 0,
    114 	    &sc->sc_ioh)) {
    115 		aprint_error_dev(self, "can't map i/o space\n");
    116 		return;
    117 	}
    118 
    119 	mutex_init(&isc->sc_lock, MUTEX_DEFAULT, IPL_NONE);
    120 	sc->sc_lock = &isc->sc_lock;
    121 
    122 	joyattach(sc);
    123 }
    124