kb_hb.c revision 1.6 
1/*	$NetBSD: kb_hb.c,v 1.6 2004/09/04 11:28:32 tsutsui 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/cdefs.h>
31__KERNEL_RCSID(0, "$NetBSD: kb_hb.c,v 1.6 2004/09/04 11:28:32 tsutsui Exp $");
32
33#include <sys/param.h>
34#include <sys/systm.h>
35#include <sys/device.h>
36
37#include <machine/bus.h>
38#include <machine/cpu.h>
39
40#include <dev/wscons/wsconsio.h>
41#include <dev/wscons/wskbdvar.h>
42#include <dev/wscons/wsksymdef.h>
43#include <dev/wscons/wsksymvar.h>
44
45#include <news68k/dev/hbvar.h>
46#include <news68k/dev/kb_hbreg.h>
47#include <news68k/dev/kbvar.h>
48
49#include <news68k/news68k/isr.h>
50
51#include "ioconf.h"
52
53#define KB_SIZE 0x10 /* XXX */
54#define KB_PRI 5
55
56int	kb_hb_match(struct device *, struct cfdata *, void *);
57void	kb_hb_attach(struct device *, struct device *, void *);
58void	kb_hb_init(struct kb_softc *);
59int	kb_hb_intr(void *);
60int	kb_hb_cnattach(void);
61
62CFATTACH_DECL(kb_hb, sizeof(struct kb_softc),
63    kb_hb_match, kb_hb_attach, NULL, NULL);
64
65struct console_softc kb_hb_conssc;
66
67int
68kb_hb_match(parent, cf, aux)
69	struct device *parent;
70	struct cfdata *cf;
71	void *aux;
72{
73	struct hb_attach_args *ha = aux;
74	u_int addr;
75
76	if (strcmp(ha->ha_name, "kb"))
77		return 0;
78
79	/* XXX no default address */
80	if (ha->ha_address == (u_int)-1)
81		return 0;
82
83	addr = IIOV(ha->ha_address); /* XXX */
84
85	if (badaddr((void *)addr, 1))
86		return 0;
87
88	return 1;
89}
90
91void
92kb_hb_attach(parent, self, aux)
93	struct device *parent;
94	struct device *self;
95	void *aux;
96{
97	struct kb_softc *sc = (void *)self;
98	struct hb_attach_args *ha = aux;
99	bus_space_tag_t bt = ha->ha_bust;
100	bus_space_handle_t bh;
101	struct wskbddev_attach_args wsa;
102	int ipl;
103
104	if (bus_space_map(bt, ha->ha_address, KB_SIZE, 0, &bh) != 0) {
105		printf("can't map device space\n");
106		return;
107	}
108
109	printf("\n");
110
111	sc->sc_bt = bt;
112	sc->sc_bh = bh;
113	sc->sc_offset = KB_REG_DATA;
114	sc->sc_conssc = &kb_hb_conssc;
115
116	ipl = ha->ha_ipl;
117	if (ipl == -1)
118		ipl = KB_PRI;
119
120	kb_hb_init(sc);
121
122	isrlink_autovec(kb_hb_intr, (void *)sc, ipl, ISRPRI_TTY);
123
124	wsa.console = kb_hb_conssc.cs_isconsole;
125	wsa.keymap = &kb_keymapdata;
126	wsa.accessops = &kb_accessops;
127	wsa.accesscookie = sc;
128
129	sc->sc_wskbddev = config_found(self, &wsa, wskbddevprint);
130}
131
132void
133kb_hb_init(sc)
134	struct kb_softc *sc;
135{
136	bus_space_tag_t bt = sc->sc_bt;
137	bus_space_handle_t bh = sc->sc_bh;
138
139	bus_space_write_1(bt, bh, KB_REG_RESET, 0);
140	bus_space_write_1(bt, bh, KB_REG_INTE, KB_INTE);
141}
142
143int
144kb_hb_intr(arg)
145	void *arg;
146{
147	struct kb_softc *sc = (struct kb_softc *)arg;
148	struct console_softc *kb_conssc = sc->sc_conssc;
149	bus_space_tag_t bt = sc->sc_bt;
150	bus_space_handle_t bh = sc->sc_bh;
151	int stat, handled = 0;
152
153	kb_conssc->cs_nintr++;
154
155	stat = bus_space_read_1(bt, bh, KB_REG_STAT);
156	if (stat & KBSTAT_RDY) {
157		kb_intr(sc);
158		handled = 1;
159		bus_space_write_1(bt, bh, KB_REG_INTE, KB_INTE);
160	}
161
162	return handled;
163}
164
165int
166kb_hb_cnattach()
167{
168
169	kb_hb_conssc.cs_isconsole = 1;
170	return kb_cnattach(&kb_hb_conssc);
171}
172