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joy_isa.c revision 1.6 
      1 /*	$NetBSD: joy_isa.c,v 1.6 2004/09/14 20:20:48 drochner 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 1.6 2004/09/14 20:20:48 drochner 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 <machine/bus.h>
     44 
     45 #include <dev/isa/isavar.h>
     46 
     47 #include <dev/ic/joyvar.h>
     48 
     49 #define JOY_NPORTS    1
     50 
     51 int	joy_isa_probe __P((struct device *, struct cfdata *, void *));
     52 void	joy_isa_attach __P((struct device *, struct device *, void *));
     53 
     54 CFATTACH_DECL(joy_isa, sizeof(struct joy_softc),
     55     joy_isa_probe, joy_isa_attach, NULL, NULL);
     56 
     57 int
     58 joy_isa_probe(parent, match, aux)
     59 	struct device *parent;
     60 	struct cfdata *match;
     61 	void *aux;
     62 {
     63 	struct isa_attach_args *ia = aux;
     64 	bus_space_tag_t iot = ia->ia_iot;
     65 	bus_space_handle_t ioh;
     66 	int rval = 0;
     67 
     68 	if (ia->ia_nio < 1)
     69 		return (0);
     70 
     71 	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
     72 		return (0);
     73 
     74 	if (bus_space_map(iot, ia->ia_io[0].ir_addr, JOY_NPORTS, 0, &ioh))
     75 		return (0);
     76 
     77 #ifdef WANT_JOYSTICK_CONNECTED
     78 	bus_space_write_1(iot, ioh, 0, 0xff);
     79 	DELAY(10000);		/* 10 ms delay */
     80 	if ((bus_space_read_1(iot, ioh, 0) & 0x0f) != 0x0f)
     81 		rval = 1;
     82 #else
     83 	rval = 1;
     84 #endif
     85 
     86 	bus_space_unmap(iot, ioh, JOY_NPORTS);
     87 
     88 	if (rval) {
     89 		ia->ia_nio = 1;
     90 		ia->ia_io[0].ir_size = JOY_NPORTS;
     91 
     92 		ia->ia_niomem = 0;
     93 		ia->ia_nirq = 0;
     94 		ia->ia_ndrq = 0;
     95 	}
     96 	return (rval);
     97 }
     98 
     99 void
    100 joy_isa_attach(parent, self, aux)
    101 	struct device *parent, *self;
    102 	void *aux;
    103 {
    104 	struct joy_softc *sc = (struct joy_softc *) self;
    105 	struct isa_attach_args *ia = aux;
    106 
    107 	printf("\n");
    108 
    109 	sc->sc_iot = ia->ia_iot;
    110 
    111 	if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, JOY_NPORTS, 0,
    112 	    &sc->sc_ioh)) {
    113 		printf("%s: can't map i/o space\n", sc->sc_dev.dv_xname);
    114 		return;
    115 	}
    116 
    117 	joyattach(sc);
    118 }
    119