1 /* $NetBSD: ms_hb.c,v 1.16 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_hb.c,v 1.16 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
41 #include <newsmips/dev/hbvar.h>
42
43 struct msreg {
44 volatile uint8_t ms_data;
45 volatile uint8_t ms_stat;
46 volatile uint8_t ms_reset;
47 volatile uint8_t ms_init;
48 };
49
50 struct ms_hb_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
58 int ms_hb_match(device_t, cfdata_t, void *);
59 void ms_hb_attach(device_t, device_t, void *);
60 int ms_hb_intr(void *);
61
62 int ms_hb_enable(void *);
63 int ms_hb_ioctl(void *, u_long, void *, int, struct lwp *);
64 void ms_hb_disable(void *);
65
66 CFATTACH_DECL_NEW(ms_hb, sizeof(struct ms_hb_softc),
67 ms_hb_match, ms_hb_attach, NULL, NULL);
68
69 struct wsmouse_accessops ms_hb_accessops = {
70 ms_hb_enable,
71 ms_hb_ioctl,
72 ms_hb_disable
73 };
74
75 int
ms_hb_match(device_t parent,cfdata_t cf,void * aux)76 ms_hb_match(device_t parent, cfdata_t cf, void *aux)
77 {
78 struct hb_attach_args *ha = aux;
79
80 if (strcmp(ha->ha_name, "ms") == 0)
81 return 1;
82
83 return 0;
84 }
85
86 void
ms_hb_attach(device_t parent,device_t self,void * aux)87 ms_hb_attach(device_t parent, device_t self, void *aux)
88 {
89 struct ms_hb_softc *sc = device_private(self);
90 struct hb_attach_args *ha = aux;
91 struct msreg *reg;
92 struct wsmousedev_attach_args aa;
93 int intr;
94
95 sc->sc_dev = self;
96
97 reg = (struct msreg *)ha->ha_addr;
98 intr = ha->ha_level;
99
100 if (intr == -1)
101 intr = 2;
102
103 sc->sc_reg = reg;
104
105 reg->ms_reset = 0x01;
106 reg->ms_init = 0x80; /* 1200 bps */
107
108 aprint_normal(" level %d\n", intr);
109
110 hb_intr_establish(intr, INTEN0_MSINT, IPL_TTY, ms_hb_intr, sc);
111
112 aa.accessops = &ms_hb_accessops;
113 aa.accesscookie = sc;
114 sc->sc_wsmousedev = config_found(self, &aa, wsmousedevprint, CFARGS_NONE);
115 }
116
117 int
ms_hb_intr(void * v)118 ms_hb_intr(void *v)
119 {
120 struct ms_hb_softc *sc = v;
121 struct msreg *reg = sc->sc_reg;
122 volatile uint8_t *ien = (void *)INTEN0;
123 int code, index, byte0, byte1, byte2;
124 int button, dx, dy;
125 int rv = 0;
126
127 *ien &= ~RX_MSINTE;
128
129 while (reg->ms_stat & RX_MSRDY) {
130 rv = 1;
131 code = reg->ms_data;
132 index = sc->sc_ndata;
133
134 if (sc->sc_wsmousedev == NULL)
135 continue;
136
137 if (code & 0x80) {
138 sc->sc_buf[0] = code;
139 sc->sc_ndata = 1;
140 continue;
141 }
142
143 if (index == 1) {
144 sc->sc_buf[1] = code;
145 sc->sc_ndata++;
146 continue;
147 }
148
149 if (index == 2) {
150 sc->sc_buf[2] = code;
151 sc->sc_ndata++;
152
153 byte0 = sc->sc_buf[0];
154 byte1 = sc->sc_buf[1];
155 byte2 = sc->sc_buf[2];
156
157 button = 0;
158 if (byte0 & 0x01)
159 button |= 1;
160 if (byte0 & 0x04)
161 button |= 2;
162 if (byte0 & 0x02)
163 button |= 4;
164
165 if (byte0 & 0x08)
166 dx = byte1 - 0x80;
167 else
168 dx = byte1;
169 if (byte0 & 0x10)
170 dy = byte2 - 0x80;
171 else
172 dy = byte2;
173
174 wsmouse_input(sc->sc_wsmousedev,
175 button,
176 dx, -dy, 0, 0,
177 WSMOUSE_INPUT_DELTA);
178 }
179 }
180
181 *ien |= RX_MSINTE;
182 return rv;
183 }
184
185 int
ms_hb_enable(void * v)186 ms_hb_enable(void *v)
187 {
188 volatile uint8_t *ien = (void *)INTEN0;
189
190 *ien |= RX_MSINTE;
191 return 0;
192 }
193
194 void
ms_hb_disable(void * v)195 ms_hb_disable(void *v)
196 {
197 volatile uint8_t *ien = (void *)INTEN0;
198
199 *ien &= ~RX_MSINTE;
200 }
201
202 int
ms_hb_ioctl(void * v,u_long cmd,void * data,int flag,struct lwp * l)203 ms_hb_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l)
204 {
205
206 return EPASSTHROUGH;
207 }
208