kb_hb.c revision 1.2 
1/*	$NetBSD: kb_hb.c,v 1.2 2002/09/27 20:34:09 thorpej Exp $	*/
2
3/*
4 * Copyright (c) 2001 Izumi Tsutsui.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 *    derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
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#include <news68k/dev/hbvar.h>
43#include <news68k/dev/kb_hbreg.h>
44#include <news68k/dev/kbvar.h>
45
46#include <news68k/news68k/isr.h>
47
48#define KB_SIZE 0x10 /* XXX */
49#define KB_PRI 5
50
51int	kb_hb_match(struct device *, struct cfdata *, void *);
52void	kb_hb_attach(struct device *, struct device *, void *);
53void	kb_hb_init(struct kb_softc *);
54int	kb_hb_intr(void *);
55int	kb_hb_cnattach(void);
56
57const struct cfattach kb_hb_ca = {
58	sizeof(struct kb_softc), kb_hb_match, kb_hb_attach
59};
60
61struct console_softc kb_hb_conssc;
62
63extern struct cfdriver kb_hb_cd;
64
65int
66kb_hb_match(parent, cf, aux)
67	struct device *parent;
68	struct cfdata *cf;
69	void *aux;
70{
71	struct hb_attach_args *ha = aux;
72	u_int addr;
73
74	if (strcmp(ha->ha_name, "kb"))
75		return 0;
76
77	/* XXX no default address */
78	if (ha->ha_address == -1)
79		return 0;
80
81	addr = IIOV(ha->ha_address); /* XXX */
82
83	if (badaddr((void *)addr, 1))
84		return 0;
85
86	return 1;
87}
88
89void
90kb_hb_attach(parent, self, aux)
91	struct device *parent;
92	struct device *self;
93	void *aux;
94{
95	struct kb_softc *sc = (void *)self;
96	struct hb_attach_args *ha = aux;
97	bus_space_tag_t bt = ha->ha_bust;
98	bus_space_handle_t bh;
99	struct wskbddev_attach_args wsa;
100	int ipl;
101
102	if (bus_space_map(bt, ha->ha_address, KB_SIZE, 0, &bh) != 0) {
103		printf("can't map device space\n");
104		return;
105	}
106
107	printf("\n");
108
109	sc->sc_bt = bt;
110	sc->sc_bh = bh;
111	sc->sc_offset = KB_REG_DATA;
112	sc->sc_conssc = &kb_hb_conssc;
113
114	ipl = ha->ha_ipl;
115	if (ipl == -1)
116		ipl = KB_PRI;
117
118	kb_hb_init(sc);
119
120	isrlink_autovec(kb_hb_intr, (void *)sc, ipl, ISRPRI_TTY);
121
122	wsa.console = kb_hb_conssc.cs_isconsole;
123	wsa.keymap = &kb_keymapdata;
124	wsa.accessops = &kb_accessops;
125	wsa.accesscookie = sc;
126
127	sc->sc_wskbddev = config_found(self, &wsa, wskbddevprint);
128}
129
130void
131kb_hb_init(sc)
132	struct kb_softc *sc;
133{
134	bus_space_tag_t bt = sc->sc_bt;
135	bus_space_handle_t bh = sc->sc_bh;
136
137	bus_space_write_1(bt, bh, KB_REG_RESET, 0);
138	bus_space_write_1(bt, bh, KB_REG_INTE, KB_INTE);
139}
140
141int
142kb_hb_intr(arg)
143	void *arg;
144{
145	struct kb_softc *sc = (struct kb_softc *)arg;
146	struct console_softc *kb_conssc = sc->sc_conssc;
147	bus_space_tag_t bt = sc->sc_bt;
148	bus_space_handle_t bh = sc->sc_bh;
149	int stat, handled = 0;
150
151	kb_conssc->cs_nintr++;
152
153	stat = bus_space_read_1(bt, bh, KB_REG_STAT);
154	if (stat & KBSTAT_RDY) {
155		kb_intr(sc);
156		handled = 1;
157		bus_space_write_1(bt, bh, KB_REG_INTE, KB_INTE);
158	}
159
160	return handled;
161}
162
163int
164kb_hb_cnattach()
165{
166
167	kb_hb_conssc.cs_isconsole = 1;
168	return kb_cnattach(&kb_hb_conssc);
169}
170