ms_ap.c revision 1.5 
1/*	$NetBSD: ms_ap.c,v 1.5 2003/07/15 02:59:28 lukem Exp $	*/
2
3/*-
4 * Copyright (c) 2000 Tsubai Masanari.  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 * 3. The name of the author may not be used to endorse or promote products
15 *    derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__KERNEL_RCSID(0, "$NetBSD: ms_ap.c,v 1.5 2003/07/15 02:59:28 lukem Exp $");
31
32#include <sys/param.h>
33#include <sys/device.h>
34#include <sys/systm.h>
35
36#include <dev/wscons/wsconsio.h>
37#include <dev/wscons/wsmousevar.h>
38
39#include <machine/adrsmap.h>
40#include <newsmips/apbus/apbusvar.h>
41
42struct msreg {
43	u_int ms_data;
44	u_int ms_stat;
45	u_int ms_intr_en;
46	u_int ms_reset;
47	u_int ms_speed;
48};
49
50struct ms_ap_softc {
51	struct device sc_dev;
52	volatile struct msreg *sc_reg;
53	struct device *sc_wsmousedev;
54	int sc_ndata;
55	u_char sc_buf[3];
56};
57
58int ms_ap_match(struct device *, struct cfdata *, void *);
59void ms_ap_attach(struct device *, struct device *, void *);
60int ms_ap_intr(void *);
61
62int ms_ap_enable(void *);
63int ms_ap_ioctl(void *, u_long, caddr_t, int, struct proc *);
64void ms_ap_disable(void *);
65
66CFATTACH_DECL(ms_ap, sizeof(struct ms_ap_softc),
67    ms_ap_match, ms_ap_attach, NULL, NULL);
68
69struct wsmouse_accessops ms_ap_accessops = {
70	ms_ap_enable,
71	ms_ap_ioctl,
72	ms_ap_disable
73};
74
75int
76ms_ap_match(parent, cf, aux)
77	struct device *parent;
78	struct cfdata *cf;
79	void *aux;
80{
81	struct apbus_attach_args *apa = aux;
82
83	if (strcmp(apa->apa_name, "ms") == 0)
84		return 1;
85
86	return 0;
87}
88
89void
90ms_ap_attach(parent, self, aux)
91	struct device *parent, *self;
92	void *aux;
93{
94	struct ms_ap_softc *sc = (void *)self;
95	struct apbus_attach_args *apa = aux;
96	volatile struct msreg *reg = (void *)apa->apa_hwbase;
97	struct wsmousedev_attach_args aa;
98
99	printf(" slot%d addr 0x%lx\n", apa->apa_slotno, apa->apa_hwbase);
100
101	sc->sc_reg = reg;
102
103	reg->ms_reset = 0x03;
104	reg->ms_speed = 0x01;
105	reg->ms_intr_en = 0;
106
107	apbus_intr_establish(1, NEWS5000_INT1_KBD, 0, ms_ap_intr, sc,
108	    "", apa->apa_ctlnum);
109
110	aa.accessops = &ms_ap_accessops;
111	aa.accesscookie = sc;
112	sc->sc_wsmousedev = config_found(self, &aa, wsmousedevprint);
113}
114
115int
116ms_ap_intr(v)
117	void *v;
118{
119	struct ms_ap_softc *sc = v;
120	volatile struct msreg *reg = sc->sc_reg;
121	int code, index, byte0, byte1, byte2;
122	int button, dx, dy;
123	int rv = 0;
124
125	reg->ms_intr_en = 0;
126
127	while (reg->ms_stat & RX_MSRDY) {
128		rv = 1;
129		code = reg->ms_data;
130		index = sc->sc_ndata;
131
132		if (sc->sc_wsmousedev == NULL)
133			continue;
134
135		if (code & 0x80) {
136			sc->sc_buf[0] = code;
137			sc->sc_ndata = 1;
138			continue;
139		}
140
141		if (index == 1) {
142			sc->sc_buf[1] = code;
143			sc->sc_ndata++;
144			continue;
145		}
146
147		if (index == 2) {
148			sc->sc_buf[2] = code;
149			sc->sc_ndata++;
150
151			byte0 = sc->sc_buf[0];
152			byte1 = sc->sc_buf[1];
153			byte2 = sc->sc_buf[2];
154
155			button = 0;
156			if (byte0 & 0x01)
157				button |= 1;
158			if (byte0 & 0x04)
159				button |= 2;
160			if (byte0 & 0x02)
161				button |= 4;
162
163			if (byte0 & 0x08)
164				dx = byte1 - 0x80;
165			else
166				dx = byte1;
167			if (byte0 & 0x10)
168				dy = byte2 - 0x80;
169			else
170				dy = byte2;
171
172			wsmouse_input(sc->sc_wsmousedev, button, dx, -dy, 0,
173			    WSMOUSE_INPUT_DELTA);
174		}
175	}
176
177	reg->ms_intr_en = 1;
178	return rv;
179}
180
181int
182ms_ap_enable(v)
183	void *v;
184{
185	struct ms_ap_softc *sc = v;
186	volatile struct msreg *reg = sc->sc_reg;
187
188	reg->ms_intr_en = 1;
189	return 0;
190}
191
192void
193ms_ap_disable(v)
194	void *v;
195{
196	struct ms_ap_softc *sc = v;
197	volatile struct msreg *reg = sc->sc_reg;
198
199	reg->ms_intr_en = 0;
200}
201
202int
203ms_ap_ioctl(v, cmd, data, flag, p)
204	void *v;
205	u_long cmd;
206	caddr_t data;
207	int flag;
208	struct proc *p;
209{
210	return EPASSTHROUGH;
211}
212