1 /* $NetBSD: kb_kbc.c,v 1.12 2021/08/07 16:19:00 thorpej Exp $ */
2
3 /*-
4 * Copyright (c) 2001 Izumi Tsutsui. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __KERNEL_RCSID(0, "$NetBSD: kb_kbc.c,v 1.12 2021/08/07 16:19:00 thorpej Exp $");
29
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/device.h>
33
34 #include <machine/bus.h>
35 #include <machine/cpu.h>
36
37 #include <dev/wscons/wsconsio.h>
38 #include <dev/wscons/wskbdvar.h>
39 #include <dev/wscons/wsksymdef.h>
40 #include <dev/wscons/wsksymvar.h>
41
42
43 #include <news68k/dev/kbcreg.h>
44 #include <news68k/dev/kbcvar.h>
45 #include <news68k/dev/kbvar.h>
46
47 #include <news68k/news68k/isr.h>
48
49 static int kb_kbc_match(device_t, cfdata_t, void *);
50 static void kb_kbc_attach(device_t, device_t, void *);
51 static void kb_kbc_init(struct kb_softc *);
52 int kb_kbc_intr(void *);
53 int kb_kbc_cnattach(void);
54
55 CFATTACH_DECL_NEW(kb_kbc, sizeof(struct kb_softc),
56 kb_kbc_match, kb_kbc_attach, NULL, NULL);
57
58 struct console_softc kb_kbc_conssc;
59
60 static int
kb_kbc_match(device_t parent,cfdata_t cf,void * aux)61 kb_kbc_match(device_t parent, cfdata_t cf, void *aux)
62 {
63 struct kbc_attach_args *ka = aux;
64
65 if (strcmp(ka->ka_name, "kb"))
66 return 0;
67
68 return 1;
69 }
70
71 static void
kb_kbc_attach(device_t parent,device_t self,void * aux)72 kb_kbc_attach(device_t parent, device_t self, void *aux)
73 {
74 struct kb_softc *sc = device_private(self);
75 struct kbc_attach_args *ka = aux;
76 struct wskbddev_attach_args wsa;
77 int ipl;
78
79 sc->sc_dev = self;
80 aprint_normal("\n");
81
82 sc->sc_bt = ka->ka_bt;
83 sc->sc_bh = ka->ka_bh;
84 sc->sc_offset = KBC_KBREG_DATA;
85 sc->sc_conssc = &kb_kbc_conssc;
86 ipl = ka->ka_ipl;
87
88 kb_kbc_init(sc);
89
90 isrlink_autovec(kb_kbc_intr, (void *)sc, ipl, IPL_TTY);
91
92 wsa.console = kb_kbc_conssc.cs_isconsole;
93 wsa.keymap = &kb_keymapdata;
94 wsa.accessops = &kb_accessops;
95 wsa.accesscookie = sc;
96
97 sc->sc_wskbddev = config_found(self, &wsa, wskbddevprint, CFARGS_NONE);
98 }
99
100 static void
kb_kbc_init(struct kb_softc * sc)101 kb_kbc_init(struct kb_softc *sc)
102 {
103 bus_space_tag_t bt = sc->sc_bt;
104 bus_space_handle_t bh = sc->sc_bh;
105
106 bus_space_write_1(bt, bh, KBC_KBREG_RESET, 0);
107 bus_space_write_1(bt, bh, KBC_KBREG_INTE, KBC_INTE);
108 }
109
110 int
kb_kbc_intr(void * arg)111 kb_kbc_intr(void *arg)
112 {
113 struct kb_softc *sc = (struct kb_softc *)arg;
114 struct console_softc *kb_conssc = sc->sc_conssc;
115 bus_space_tag_t bt = sc->sc_bt;
116 bus_space_handle_t bh = sc->sc_bh;
117 int stat, handled = 0;
118
119 kb_conssc->cs_nintr++;
120
121 stat = bus_space_read_1(bt, bh, KBC_KBREG_STAT);
122 if (stat & KBCSTAT_KBRDY) {
123 kb_intr(sc);
124 handled = 1;
125 bus_space_write_1(bt, bh, KBC_KBREG_INTE, KBC_INTE);
126 }
127
128 return handled;
129 }
130
131 int
kb_kbc_cnattach(void)132 kb_kbc_cnattach(void)
133 {
134
135 kb_kbc_conssc.cs_isconsole = 1;
136 return kb_cnattach(&kb_kbc_conssc);
137 }
138