kb_kbc.c revision 1.12 
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
49static int kb_kbc_match(device_t, cfdata_t, void *);
50static void kb_kbc_attach(device_t, device_t, void *);
51static void kb_kbc_init(struct kb_softc *);
52int	kb_kbc_intr(void *);
53int	kb_kbc_cnattach(void);
54
55CFATTACH_DECL_NEW(kb_kbc, sizeof(struct kb_softc),
56    kb_kbc_match, kb_kbc_attach, NULL, NULL);
57
58struct console_softc kb_kbc_conssc;
59
60static int
61kb_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
71static void
72kb_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
100static void
101kb_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
110int
111kb_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
131int
132kb_kbc_cnattach(void)
133{
134
135	kb_kbc_conssc.cs_isconsole = 1;
136	return kb_cnattach(&kb_kbc_conssc);
137}
138