Mouse driver source code

John Plocher plocher%sally at Sun.COM
Wed Jun 7 16:46:05 AEST 1989


:
#!/bin/sh
#    This is a shell archive created by yasa (1.74jmp).
#    Run the following text with /bin/sh to extract.
#
#    Archive: /usr/src2/public/drivers/mouse/ms.driver        
#
#    This archive is a complete distribution by itself.
#
#    Packed under unix by plocher at lessa (John Plocher)
#    Date: Tue Jun  6 23:30:38 1989
#
#    This archive will not overwrite existing files
#    inless invoked with the -c flag: sh SHARNAME -c
#
PATH=/bin:/usr/bin ; export PATH

YASASTART=`pwd`

echo x - mouse.c
if [ -f mouse.c -a "${1}" != "-c" ] ;then
    echo "shar: will not overwrite 'mouse.c'"
else
    sed "s/^X//" << \!End-Of-mouse.c! > mouse.c
X/*
X * Simple mouse driver for the Logitech Bus Mouse
X * Mouse deltas and button state is accessed through an ioctl()
X *
X *	Written By
X *	John Plocher
X *	Jas Cluff
X *	Ken Chapin
X *
X *	This code is released into the Public Domain
X */
X
X/*
X**	Compile with    cc -Ml -c mouse.c	V/286  (V/AT)
X**			cc     -c mouse.c	V/386  (3.0 or 3.2)
X**
X**	Install in the kernel configuration directories
X**	generate a kernel & reboot off of it
X**	run the tst program to test out behavior
X*/
X
X#include	"sys/param.h"
X#include	"sys/types.h"
X#include	"sys/dir.h"
X#include	"sys/signal.h"
X#include	"sys/user.h"
X#include	"sys/errno.h"
X#include	"mouse.h"
X
X#ifdef DEBUG
X#  define Dprintf(string)	printf(string)
X#else
X#  define Dprintf(string)
X#endif
X
Xmsinit()
X{
X	/*	Is mouse there?		*/
X
X/* Test hardware registers to see if installed       TODO */
X
X	/*	Initailize registers	*/
X	outb(CONTROL, MOUSEDEFAULT);
X	outb(PORTC, PORTC_DISABLE_INTERRUPTS);
X
X	/*      Say hello world         */
X#ifdef USE_INTS
X	printf("ms 1.01 %x-%x %x Ints are used\n",
X#else
X	printf("ms 1.01 %x-%x %x No ints for now\n",
X#endif
X			PORTA, CONTROL, inb(SIGNATURE_PORT));
X}
X
Xmsstart()
X{
X	Dprintf("MSSTART\n");
X}
X
Xmsopen()
X{
X	Dprintf("MSOPEN\n");
X	/*	Enable interrupts	*/
X#ifdef USE_INTS
X	outb(PORTC, PORTC_ENABLE_INTERRUPTS);
X#endif
X}
X
Xmsclose()
X{
X	/*	Disable interrupts	*/
X	Dprintf("MSCLOSE\n");
X	outb(PORTC, PORTC_DISABLE_INTERRUPTS);
X}
X
Xmsread()
X{
X/* NOP - do nothing but disable interrupt generator on bus mouse board */
X	Dprintf("MSREAD\n");
X	outb(PORTC, PORTC_DISABLE_INTERRUPTS);
X}
X
Xmswrite()
X{
X/* NOP - do nothing but disable interrupt generator on bus mouse board */
X	Dprintf("MSWRITE\n");
X	outb(PORTC, PORTC_DISABLE_INTERRUPTS);
X}
X
Xmsioctl(dev, cmd, arg)
Xint dev, cmd, *arg;
X{
X	/*	Get mouse values for user	*/
X
X	/*
X	** The Bus Mouse board keeps a running delta between reads
X	** so all we do here is send it back to the user when she wants it
X	*/
X
X	register struct mousedat md;
X	register unsigned int i;
X
X	switch(cmd) {
X	case MIOGETDATA:outb(PORTC, READ_X_LOW);
X			md.deltax = inb(PORTA) & 0xf;
X			outb(PORTC, READ_X_HIGH);
X			md.deltax |= (inb(PORTA) & 0xf) << 4;
X
X			outb(PORTC, READ_Y_LOW );
X			md.deltay = inb(PORTA) & 0xf;
X			outb(PORTC, READ_Y_HIGH);
X			i = inb(PORTA);
X			outb(PORTC, PORTC_DISABLE_INTERRUPTS);
X			md.deltay |= (i & 0xf) << 4;
X			md.buttons = i >> 5;
X
X			if (copyout(&md, arg, sizeof md))
X				u.u_error = EFAULT;
X			break;
X
X	default:	u.u_error = EFAULT;
X			break;
X	}
X}
X
Xmsintr()
X{
X
X/*
X** Not Used - might be used to keep a running delta and send a signal to
X** the controlling tty if a button was pressed ....
X*/
X	/*	Respond to squeak	*/
X	Dprintf("M");
X}
X
!End-Of-mouse.c!
if [ "`wc -c mouse.c`" != "   2632 mouse.c" ]
then
echo '   mouse.c may be bad'
fi
fi
echo x - mouse.h
if [ -f mouse.h -a "${1}" != "-c" ] ;then
    echo "shar: will not overwrite 'mouse.h'"
else
    sed "s/^X//" << \!End-Of-mouse.h! > mouse.h
X/*	mouse.h:	header file for Logitech Bus Mouse driver	*/
X
X#ifndef MOUSE_H
X#define MOUSE_H
X
X/* #define USE_INTS	/* Should the driver use interrupts? */
X
X#define	PORTA	0x23c		/*	1100		*/
X#define	SIGNATURE_PORT	0x23d	/*	1101		*/
X#define	PORTC	0x23e		/*	1110		*/
X#define	CONTROL	0x23f		/*	1111		*/
X
X#define	SETMODE		0x80	/*	1xxx xxxx	*/
X	/* Group A */
X#define M_AMODE0	0x00	/*	x00x xxxx	*/
X#define M_AMODE1	0x20	/*	x01x xxxx	*/
X#define M_AMODE2	0x40	/*	x10x xxxx	*/
X#define M_AIN		0x10	/*	xxx1 xxxx	*/
X#define M_AOUT		0x00	/*	xxx0 xxxx	*/
X#define M_CUIN		0x08	/*	xxxx 1xxx	*/
X#define M_CUOUT		0x00	/*	xxxx 0xxx	*/
X	/* Group B */
X#define M_BMODE0	0x00	/*	xxxx x0xx	*/
X#define M_BMODE1	0x04	/*	xxxx x1xx	*/
X#define M_BIN		0x02	/*	xxxx xx1x	*/
X#define M_BOUT		0x00	/*	xxxx xx0x	*/
X#define M_CLIN		0x01	/*	xxxx xxx1	*/
X#define M_CLOUT		0x00	/*	xxxx xxx0	*/
X
X#define MOUSEDEFAULT	(SETMODE|M_AMODE0|M_AIN)	/* 1001 0000 */
X
X#define	READ_X_LOW	0x80	/*	1000 0000	*/
X#define	READ_X_HIGH	0xa0	/*	1010 0000	*/
X#define	READ_Y_LOW	0xc0	/*	1100 0000	*/
X#define	READ_Y_HIGH	0xe0	/*	1110 0000	*/
X
X#define	PORTC_ENABLE_INTERRUPTS		0x80	/*	1000 0000	*/
X#define	PORTC_DISABLE_INTERRUPTS	0x10	/*	0000 0000	*/
X
Xstruct	mousedat { 
X	unsigned char buttons; 
X	char deltax,deltay;
X};
X
X/* IOCTLS */
X#define	MIOGETDATA	(('M'<<8) | 0x01)	/* get mouse data */
X
X#endif
X
!End-Of-mouse.h!
if [ "`wc -c mouse.h`" != "   1334 mouse.h" ]
then
echo '   mouse.h may be bad'
fi
fi
echo x - tst.c
if [ -f tst.c -a "${1}" != "-c" ] ;then
    echo "shar: will not overwrite 'tst.c'"
else
    sed "s/^X//" << \!End-Of-tst.c! > tst.c
X
X/*
X**	Test program for Mouse Driver
X*/
X
X/* #define USE_GFX /* Microport 2.4 (286) or 3.0e (386) graphics interface */
X
X#include <sys/io_op.h>
X#include <sys/types.h>
X#ifdef USE_GFX
X#include <gfx.h>
X#endif
X#include "mouse.h"
X
Xint     mousefd;
X
X#ifdef USE_GFX
XGfx_Bitmap bm;
X#endif
X
Xmain()
X{
X	register struct mousedat	new,old;
X	register int xpos, ypos;
X
X	old.deltax = old.deltay = old.buttons = 1;
X
X	if ((mousefd = open("/dev/mouse")) == -1) {
X		perror("open of mouse device");
X		exit(1);
X	}
X
X#ifdef USE_GFX
X	if (!(bm = gfx_open())) {
X		perror("open of gfx");
X		exit(1);
X	}
X	gfx_mode(bm, GRAPHIC);
X	gfx_clear(bm, BLACK);
X	ega_flush();
X#else
X#endif
X
X	xpos = ypos = 1;
X	while (old.buttons != 7) {	/* press all 3 buttons to quit */
X		readmouse(&new);
X		if (memcmp(&old, &new, sizeof(struct mousedat))) {	
X#ifdef USE_GFX
X            gfx_rect(bm,xpos-1, ypos-1,xpos+1, ypos+1,7+old.buttons,GFX_XOR);
X			xpos += new.deltax; ypos += new.deltay;
X            gfx_rect(bm,xpos-1, ypos-1,xpos+1, ypos+1,7+new.buttons,GFX_XOR);
X			ega_flush();
X			memcpy(&old, &new, sizeof(struct mousedat));
X#else
X			xpos += new.deltax; ypos += new.deltay;
X		        printf("X=%03d Y=%03d  Buttons=%c%c%c\n", xpos, ypos,
X				   new.buttons & 1 ? '*' : ' ',
X				      new.buttons & 2 ? '*' : ' ',
X				         new.buttons & 4 ? '*' : ' ' );
X#endif
X		}
X	}
X#ifdef USE_GFX
X	gfx_dot(bm,xpos, ypos, BLACK, GFX_SRC);
X	ega_flush();
X	gfx_mode(bm, ALPHA);
X#else
X#endif
X}
X
Xreadmouse( md )
Xregister struct mousedat *md;
X{
X	if ((ioctl(mousefd, MIOGETDATA, md)) == -1) {
X		perror("IOCTL failed on /dev/mouse");
X		exit(2);
X	}
X}
X
!End-Of-tst.c!
if [ "`wc -c tst.c`" != "   1584 tst.c" ]
then
echo '   tst.c may be bad'
fi
fi



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