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joy_isa.c revision 1.12 
      1 /*	$NetBSD: joy_isa.c,v 1.12 2008/03/26 18:27:07 xtraeme 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 1.12 2008/03/26 18:27:07 xtraeme 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 static int	joy_isa_probe(device_t, cfdata_t, void *);
     52 static void	joy_isa_attach(device_t, device_t, void *);
     53 
     54 CFATTACH_DECL_NEW(joy_isa, sizeof(struct joy_softc),
     55     joy_isa_probe, joy_isa_attach, NULL, NULL);
     56 
     57 static int
     58 joy_isa_probe(device_t parent, cfdata_t match, void *aux)
     59 {
     60 	struct isa_attach_args *ia = aux;
     61 	bus_space_tag_t iot = ia->ia_iot;
     62 	bus_space_handle_t ioh;
     63 	int rval = 0;
     64 
     65 	if (ia->ia_nio < 1)
     66 		return 0;
     67 
     68 	if (ia->ia_io[0].ir_addr == ISA_UNKNOWN_PORT)
     69 		return 0;
     70 
     71 	if (bus_space_map(iot, ia->ia_io[0].ir_addr, JOY_NPORTS, 0, &ioh))
     72 		return 0;
     73 
     74 #ifdef WANT_JOYSTICK_CONNECTED
     75 	bus_space_write_1(iot, ioh, 0, 0xff);
     76 	DELAY(10000);		/* 10 ms delay */
     77 	if ((bus_space_read_1(iot, ioh, 0) & 0x0f) != 0x0f)
     78 		rval = 1;
     79 #else
     80 	rval = 1;
     81 #endif
     82 
     83 	bus_space_unmap(iot, ioh, JOY_NPORTS);
     84 
     85 	if (rval) {
     86 		ia->ia_nio = 1;
     87 		ia->ia_io[0].ir_size = JOY_NPORTS;
     88 
     89 		ia->ia_niomem = 0;
     90 		ia->ia_nirq = 0;
     91 		ia->ia_ndrq = 0;
     92 	}
     93 	return rval;
     94 }
     95 
     96 static void
     97 joy_isa_attach(device_t parent, device_t self, void *aux)
     98 {
     99 	struct joy_softc *sc = device_private(self);
    100 	struct isa_attach_args *ia = aux;
    101 
    102 	aprint_normal("\n");
    103 
    104 	sc->sc_iot = ia->ia_iot;
    105 	sc->sc_dev = self;
    106 
    107 	if (bus_space_map(sc->sc_iot, ia->ia_io[0].ir_addr, JOY_NPORTS, 0,
    108 	    &sc->sc_ioh)) {
    109 		aprint_error_dev(self, "can't map i/o space\n");
    110 		return;
    111 	}
    112 
    113 	joyattach(sc);
    114 }
    115