1 /* $NetBSD: sio.c,v 1.16 2021/09/25 15:18:38 tsutsui Exp $ */
2
3 /*-
4 * Copyright (c) 2000 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Tohru Nishimura.
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 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
33
34 __KERNEL_RCSID(0, "$NetBSD: sio.c,v 1.16 2021/09/25 15:18:38 tsutsui Exp $");
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/device.h>
39
40 #include <machine/cpu.h>
41 #include <machine/autoconf.h>
42
43 #include <luna68k/luna68k/isr.h>
44 #include <luna68k/dev/sioreg.h>
45 #include <luna68k/dev/siovar.h>
46
47 #include "ioconf.h"
48
49 static int sio_match(device_t, cfdata_t, void *);
50 static void sio_attach(device_t, device_t, void *);
51 static int sio_print(void *, const char *);
52
53 CFATTACH_DECL_NEW(sio, sizeof(struct sio_softc),
54 sio_match, sio_attach, NULL, NULL);
55
56 static void nullintr(void *);
57 static int xsiointr(void *);
58
59 static int
sio_match(device_t parent,cfdata_t cf,void * aux)60 sio_match(device_t parent, cfdata_t cf, void *aux)
61 {
62 struct mainbus_attach_args *ma = aux;
63
64 if (strcmp(ma->ma_name, sio_cd.cd_name))
65 return 0;
66 if (badaddr((void *)ma->ma_addr, 4))
67 return 0;
68 return 1;
69 }
70
71 static void
sio_attach(device_t parent,device_t self,void * aux)72 sio_attach(device_t parent, device_t self, void *aux)
73 {
74 struct sio_softc *sc = device_private(self);
75 struct mainbus_attach_args *ma = aux;
76 struct sio_attach_args sio_args;
77 int channel;
78 extern int sysconsole; /* console: 0 for ttya, 1 for desktop */
79
80 aprint_normal(": uPD7201A\n");
81
82 sc->sc_dev = self;
83 sc->sc_ctl = (void *)ma->ma_addr;
84 for (channel = 0; channel < 2; channel++) {
85 sc->sc_intrhand[channel].ih_func = nullintr;
86 sio_args.channel = channel;
87 sio_args.hwflags = (channel == sysconsole);
88 config_found(self, (void *)&sio_args, sio_print, CFARGS_NONE);
89 }
90
91 isrlink_autovec(xsiointr, sc, ma->ma_ilvl, ISRPRI_TTYNOBUF);
92 }
93
94 static int
sio_print(void * aux,const char * name)95 sio_print(void *aux, const char *name)
96 {
97 struct sio_attach_args *args = aux;
98
99 if (name != NULL)
100 aprint_normal("%s: ", name);
101
102 if (args->channel != -1)
103 aprint_normal(" channel %d", args->channel);
104
105 return UNCONF;
106 }
107
108 static int
xsiointr(void * arg)109 xsiointr(void *arg)
110 {
111 struct sio_softc *sc = arg;
112
113 /* channel 0: ttya system serial port */
114 (*sc->sc_intrhand[0].ih_func)(sc->sc_intrhand[0].ih_arg);
115
116 /* channel 1: keyboard and mouse */
117 (*sc->sc_intrhand[1].ih_func)(sc->sc_intrhand[1].ih_arg);
118
119 return 1;
120 }
121
122 static void
nullintr(void * arg)123 nullintr(void *arg)
124 {
125 }
126