Annotation of sys/arch/i386/isa/joy_isa.c, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: joy_isa.c,v 1.7 2007/08/01 13:18:18 martin Exp $ */
2: /* $NetBSD: joy.c,v 1.3 1996/05/05 19:46:15 christos Exp $ */
3:
4: /*-
5: * Copyright (c) 1995 Jean-Marc Zucconi
6: * All rights reserved.
7: *
8: * Ported to NetBSD by Matthieu Herrb <matthieu@laas.fr>
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/param.h>
36: #include <sys/systm.h>
37: #include <sys/kernel.h>
38: #include <sys/device.h>
39: #include <sys/errno.h>
40:
41: #include <machine/cpu.h>
42: #include <machine/pio.h>
43: #include <machine/cpufunc.h>
44: #include <machine/joystick.h>
45: #include <machine/conf.h>
46:
47: #include <dev/isa/isavar.h>
48: #include <dev/isa/isareg.h>
49: #include <dev/ic/i8253reg.h>
50: #include <i386/isa/joyreg.h>
51:
52: int joy_isa_probe(struct device *, void *, void *);
53: void joy_isa_attach(struct device *, struct device *, void *);
54:
55: struct cfattach joy_isa_ca = {
56: sizeof(struct joy_softc), joy_isa_probe, joy_isa_attach
57: };
58:
59: int
60: joy_isa_probe(struct device *parent, void *match, void *aux)
61: {
62: struct isa_attach_args *ia = aux;
63: #ifdef WANT_JOYSTICK_CONNECTED
64: int iobase = ia->ia_iobase;
65:
66: outb(iobase, 0xff);
67: DELAY(10000); /* 10 ms delay */
68: return (inb(iobase) & 0x0f) != 0x0f;
69: #else
70: ia->ia_iosize = JOY_NPORTS;
71: ia->ia_msize = 0;
72: return 1;
73: #endif
74: }
75:
76: void
77: joy_isa_attach(struct device *parent, struct device *self, void *aux)
78: {
79: struct joy_softc *sc = (void *) self;
80: struct isa_attach_args *ia = aux;
81: int iobase = ia->ia_iobase;
82:
83: sc->port = iobase;
84: sc->timeout[0] = sc->timeout[1] = 0;
85: outb(iobase, 0xff);
86: DELAY(10000); /* 10 ms delay */
87: #if 0
88: printf(": joystick%sconnected\n",
89: (inb(iobase) & 0x0f) == 0x0f ? " not " : " ");
90: #else
91: printf("\n");
92: #endif
93: }
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