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ms_hb.c revision 1.4 
      1 /*	$NetBSD: ms_hb.c,v 1.4 2002/10/02 04:27:52 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/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 CFATTACH_DECL(ms_hb, sizeof(struct ms_hb_softc),
     63     ms_hb_match, ms_hb_attach, NULL, NULL);
     64 
     65 struct wsmouse_accessops ms_hb_accessops = {
     66 	ms_hb_enable,
     67 	ms_hb_ioctl,
     68 	ms_hb_disable
     69 };
     70 
     71 int
     72 ms_hb_match(parent, cf, aux)
     73 	struct device *parent;
     74 	struct cfdata *cf;
     75 	void *aux;
     76 {
     77 	struct confargs *ca = aux;
     78 
     79 	if (strcmp(ca->ca_name, "ms") == 0)
     80 		return 1;
     81 
     82 	return 0;
     83 }
     84 
     85 void
     86 ms_hb_attach(parent, self, aux)
     87 	struct device *parent, *self;
     88 	void *aux;
     89 {
     90 	struct ms_hb_softc *sc = (void *)self;
     91 	volatile struct msreg *reg = (void *)self->dv_cfdata->cf_addr;
     92 	int intr = self->dv_cfdata->cf_level;
     93 	struct wsmousedev_attach_args aa;
     94 
     95 	if (intr == -1)
     96 		intr = 2;
     97 
     98 	sc->sc_reg = reg;
     99 	reg->ms_reset = 0x01;
    100 	reg->ms_init = 0x80;	/* 1200 bps */
    101 
    102 	printf(" level %d\n", intr);
    103 
    104 	hb_intr_establish(intr, IPL_TTY, ms_hb_intr, sc);
    105 
    106 	aa.accessops = &ms_hb_accessops;
    107 	aa.accesscookie = sc;
    108 	sc->sc_wsmousedev = config_found(self, &aa, wsmousedevprint);
    109 }
    110 
    111 int
    112 ms_hb_intr(v)
    113 	void *v;
    114 {
    115 	struct ms_hb_softc *sc = v;
    116 	volatile struct msreg *reg = sc->sc_reg;
    117 	volatile u_char *ien = (void *)INTEN0;
    118 	int code, index, byte0, byte1, byte2;
    119 	int button, dx, dy;
    120 	int rv = 0;
    121 
    122 	*ien &= ~RX_MSINTE;
    123 
    124 	while (reg->ms_stat & RX_MSRDY) {
    125 		rv = 1;
    126 		code = reg->ms_data;
    127 		index = sc->sc_ndata;
    128 
    129 		if (sc->sc_wsmousedev == NULL)
    130 			continue;
    131 
    132 		if (code & 0x80) {
    133 			sc->sc_buf[0] = code;
    134 			sc->sc_ndata = 1;
    135 			continue;
    136 		}
    137 
    138 		if (index == 1) {
    139 			sc->sc_buf[1] = code;
    140 			sc->sc_ndata++;
    141 			continue;
    142 		}
    143 
    144 		if (index == 2) {
    145 			sc->sc_buf[2] = code;
    146 			sc->sc_ndata++;
    147 
    148 			byte0 = sc->sc_buf[0];
    149 			byte1 = sc->sc_buf[1];
    150 			byte2 = sc->sc_buf[2];
    151 
    152 			button = 0;
    153 			if (byte0 & 0x01)
    154 				button |= 1;
    155 			if (byte0 & 0x04)
    156 				button |= 2;
    157 			if (byte0 & 0x02)
    158 				button |= 4;
    159 
    160 			if (byte0 & 0x08)
    161 				dx = byte1 - 0x80;
    162 			else
    163 				dx = byte1;
    164 			if (byte0 & 0x10)
    165 				dy = byte2 - 0x80;
    166 			else
    167 				dy = byte2;
    168 
    169 			wsmouse_input(sc->sc_wsmousedev, button, dx, -dy, 0,
    170 			    WSMOUSE_INPUT_DELTA);
    171 		}
    172 	}
    173 
    174 	*ien |= RX_MSINTE;
    175 	return rv;
    176 }
    177 
    178 int
    179 ms_hb_enable(v)
    180 	void *v;
    181 {
    182 	volatile u_char *ien = (void *)INTEN0;
    183 
    184 	*ien |= RX_MSINTE;
    185 	return 0;
    186 }
    187 
    188 void
    189 ms_hb_disable(v)
    190 	void *v;
    191 {
    192 	volatile u_char *ien = (void *)INTEN0;
    193 
    194 	*ien &= ~RX_MSINTE;
    195 }
    196 
    197 int
    198 ms_hb_ioctl(v, cmd, data, flag, p)
    199 	void *v;
    200 	u_long cmd;
    201 	caddr_t data;
    202 	int flag;
    203 	struct proc *p;
    204 {
    205 	return EPASSTHROUGH;
    206 }
    207