1/*	$NetBSD: ms_ap.c,v 1.14 2021/08/07 16:19:01 thorpej 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 1.14 2021/08/07 16:19:01 thorpej 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	volatile uint32_t ms_data;
44	volatile uint32_t ms_stat;
45	volatile uint32_t ms_intr_en;
46	volatile uint32_t ms_reset;
47	volatile uint32_t ms_speed;
48};
49
50struct ms_ap_softc {
51	device_t sc_dev;
52	struct msreg *sc_reg;
53	device_t sc_wsmousedev;
54	int sc_ndata;
55	uint8_t sc_buf[3];
56};
57
58int ms_ap_match(device_t, cfdata_t, void *);
59void ms_ap_attach(device_t, device_t, void *);
60int ms_ap_intr(void *);
61
62int ms_ap_enable(void *);
63int ms_ap_ioctl(void *, u_long, void *, int, struct lwp *);
64void ms_ap_disable(void *);
65
66CFATTACH_DECL_NEW(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(device_t parent, cfdata_t cf, void *aux)
77{
78	struct apbus_attach_args *apa = aux;
79
80	if (strcmp(apa->apa_name, "ms") == 0)
81		return 1;
82
83	return 0;
84}
85
86void
87ms_ap_attach(device_t parent, device_t self, void *aux)
88{
89	struct ms_ap_softc *sc = device_private(self);
90	struct apbus_attach_args *apa = aux;
91	struct msreg *reg = (void *)apa->apa_hwbase;
92	struct wsmousedev_attach_args aa;
93
94	sc->sc_dev = self;
95	aprint_normal(" slot%d addr 0x%lx\n", apa->apa_slotno, apa->apa_hwbase);
96
97	sc->sc_reg = reg;
98
99	reg->ms_reset = 0x03;
100	reg->ms_speed = 0x01;
101	reg->ms_intr_en = 0;
102
103	apbus_intr_establish(1, NEWS5000_INT1_KBD, 0, ms_ap_intr, sc,
104	    device_xname(self), apa->apa_ctlnum);
105
106	aa.accessops = &ms_ap_accessops;
107	aa.accesscookie = sc;
108	sc->sc_wsmousedev = config_found(self, &aa, wsmousedevprint, CFARGS_NONE);
109}
110
111int
112ms_ap_intr(void *v)
113{
114	struct ms_ap_softc *sc = v;
115	struct msreg *reg = sc->sc_reg;
116	int code, index, byte0, byte1, byte2;
117	int button, dx, dy;
118	int rv = 0;
119
120	reg->ms_intr_en = 0;
121
122	while (reg->ms_stat & RX_MSRDY) {
123		rv = 1;
124		code = reg->ms_data;
125		index = sc->sc_ndata;
126
127		if (sc->sc_wsmousedev == NULL)
128			continue;
129
130		if (code & 0x80) {
131			sc->sc_buf[0] = code;
132			sc->sc_ndata = 1;
133			continue;
134		}
135
136		if (index == 1) {
137			sc->sc_buf[1] = code;
138			sc->sc_ndata++;
139			continue;
140		}
141
142		if (index == 2) {
143			sc->sc_buf[2] = code;
144			sc->sc_ndata++;
145
146			byte0 = sc->sc_buf[0];
147			byte1 = sc->sc_buf[1];
148			byte2 = sc->sc_buf[2];
149
150			button = 0;
151			if (byte0 & 0x01)
152				button |= 1;
153			if (byte0 & 0x04)
154				button |= 2;
155			if (byte0 & 0x02)
156				button |= 4;
157
158			if (byte0 & 0x08)
159				dx = byte1 - 0x80;
160			else
161				dx = byte1;
162			if (byte0 & 0x10)
163				dy = byte2 - 0x80;
164			else
165				dy = byte2;
166
167			wsmouse_input(sc->sc_wsmousedev,
168					button,
169					dx, -dy, 0, 0,
170					WSMOUSE_INPUT_DELTA);
171		}
172	}
173
174	reg->ms_intr_en = 1;
175	return rv;
176}
177
178int
179ms_ap_enable(void *v)
180{
181	struct ms_ap_softc *sc = v;
182	struct msreg *reg = sc->sc_reg;
183
184	reg->ms_intr_en = 1;
185	return 0;
186}
187
188void
189ms_ap_disable(void *v)
190{
191	struct ms_ap_softc *sc = v;
192	struct msreg *reg = sc->sc_reg;
193
194	reg->ms_intr_en = 0;
195}
196
197int
198ms_ap_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l)
199{
200
201	return EPASSTHROUGH;
202}
203