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@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 1.14 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
joy_isa_probe(device_t parent,cfdata_t match,void * aux)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
joy_isa_attach(device_t parent,device_t self,void * aux)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