sys/dev/isa/joy_isa.c

   1 /*      $NetBSD: joy_isa.c,v 1.11 2007/10/19 12:00:20 ad Exp $  */
   2
   3 /*-
   4  * Copyright (c) 1995 Jean-Marc Zucconi
   5  * All rights reserved.
   6  *
   7  * Ported to NetBSD by Matthieu Herrb <matthieu@laas.fr>.  Additional
   8  * modification by Jason R. Thorpe <thorpej@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 1.11 2007/10/19 12:00:20 ad 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 }