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ms_hb.c revision 1.2 
      1 /*	$NetBSD: ms_hb.c,v 1.2 2002/03/17 19:40:46 atatat 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/param.h>
     30 #include <sys/device.h>
     31 #include <sys/systm.h>
     32 
     33 #include <dev/wscons/wsconsio.h>
     34 #include <dev/wscons/wsmousevar.h>
     35 
     36 #include <machine/autoconf.h>
     37 #include <machine/adrsmap.h>
     38 
     39 struct msreg {
     40 	u_char ms_data;
     41 	u_char ms_stat;
     42 	u_char ms_reset;
     43 	u_char ms_init;
     44 };
     45 
     46 struct ms_hb_softc {
     47 	struct device sc_dev;
     48 	volatile struct msreg *sc_reg;
     49 	struct device *sc_wsmousedev;
     50 	int sc_ndata;
     51 	u_char sc_buf[3];
     52 };
     53 
     54 int ms_hb_match(struct device *, struct cfdata *, void *);
     55 void ms_hb_attach(struct device *, struct device *, void *);
     56 int ms_hb_intr(void *);
     57 
     58 int ms_hb_enable(void *);
     59 int ms_hb_ioctl(void *, u_long, caddr_t, int, struct proc *);
     60 void ms_hb_disable(void *);
     61 
     62 struct cfattach ms_hb_ca = {
     63 	sizeof(struct ms_hb_softc), ms_hb_match, ms_hb_attach
     64 };
     65 
     66 struct wsmouse_accessops ms_hb_accessops = {
     67 	ms_hb_enable,
     68 	ms_hb_ioctl,
     69 	ms_hb_disable
     70 };
     71 
     72 int
     73 ms_hb_match(parent, cf, aux)
     74 	struct device *parent;
     75 	struct cfdata *cf;
     76 	void *aux;
     77 {
     78 	struct confargs *ca = aux;
     79 
     80 	if (strcmp(ca->ca_name, "ms") == 0)
     81 		return 1;
     82 
     83 	return 0;
     84 }
     85 
     86 void
     87 ms_hb_attach(parent, self, aux)
     88 	struct device *parent, *self;
     89 	void *aux;
     90 {
     91 	struct ms_hb_softc *sc = (void *)self;
     92 	volatile struct msreg *reg = (void *)self->dv_cfdata->cf_addr;
     93 	int intr = self->dv_cfdata->cf_level;
     94 	struct wsmousedev_attach_args aa;
     95 
     96 	if (intr == -1)
     97 		intr = 2;
     98 
     99 	sc->sc_reg = reg;
    100 	reg->ms_reset = 0x01;
    101 	reg->ms_init = 0x80;	/* 1200 bps */
    102 
    103 	printf(" level %d\n", intr);
    104 
    105 	hb_intr_establish(intr, IPL_TTY, ms_hb_intr, sc);
    106 
    107 	aa.accessops = &ms_hb_accessops;
    108 	aa.accesscookie = sc;
    109 	sc->sc_wsmousedev = config_found(self, &aa, wsmousedevprint);
    110 }
    111 
    112 int
    113 ms_hb_intr(v)
    114 	void *v;
    115 {
    116 	struct ms_hb_softc *sc = v;
    117 	volatile struct msreg *reg = sc->sc_reg;
    118 	volatile u_char *ien = (void *)INTEN0;
    119 	int code, index, byte0, byte1, byte2;
    120 	int button, dx, dy;
    121 	int rv = 0;
    122 
    123 	*ien &= ~RX_MSINTE;
    124 
    125 	while (reg->ms_stat & RX_MSRDY) {
    126 		rv = 1;
    127 		code = reg->ms_data;
    128 		index = sc->sc_ndata;
    129 
    130 		if (sc->sc_wsmousedev == NULL)
    131 			continue;
    132 
    133 		if (code & 0x80) {
    134 			sc->sc_buf[0] = code;
    135 			sc->sc_ndata = 1;
    136 			continue;
    137 		}
    138 
    139 		if (index == 1) {
    140 			sc->sc_buf[1] = code;
    141 			sc->sc_ndata++;
    142 			continue;
    143 		}
    144 
    145 		if (index == 2) {
    146 			sc->sc_buf[2] = code;
    147 			sc->sc_ndata++;
    148 
    149 			byte0 = sc->sc_buf[0];
    150 			byte1 = sc->sc_buf[1];
    151 			byte2 = sc->sc_buf[2];
    152 
    153 			button = 0;
    154 			if (byte0 & 0x01)
    155 				button |= 1;
    156 			if (byte0 & 0x04)
    157 				button |= 2;
    158 			if (byte0 & 0x02)
    159 				button |= 4;
    160 
    161 			if (byte0 & 0x08)
    162 				dx = byte1 - 0x80;
    163 			else
    164 				dx = byte1;
    165 			if (byte0 & 0x10)
    166 				dy = byte2 - 0x80;
    167 			else
    168 				dy = byte2;
    169 
    170 			wsmouse_input(sc->sc_wsmousedev, button, dx, -dy, 0,
    171 			    WSMOUSE_INPUT_DELTA);
    172 		}
    173 	}
    174 
    175 	*ien |= RX_MSINTE;
    176 	return rv;
    177 }
    178 
    179 int
    180 ms_hb_enable(v)
    181 	void *v;
    182 {
    183 	volatile u_char *ien = (void *)INTEN0;
    184 
    185 	*ien |= RX_MSINTE;
    186 	return 0;
    187 }
    188 
    189 void
    190 ms_hb_disable(v)
    191 	void *v;
    192 {
    193 	volatile u_char *ien = (void *)INTEN0;
    194 
    195 	*ien &= ~RX_MSINTE;
    196 }
    197 
    198 int
    199 ms_hb_ioctl(v, cmd, data, flag, p)
    200 	void *v;
    201 	u_long cmd;
    202 	caddr_t data;
    203 	int flag;
    204 	struct proc *p;
    205 {
    206 	return EPASSTHROUGH;
    207 }
    208