fb.c

早期freebsd实现

/*-
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Ralph Campbell and Rick Macklem.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)fb.c	8.1 (Berkeley) 6/10/93
 */

/* 
 *  devGraphics.c --
 *
 *     	This file contains machine-dependent routines for the graphics device.
 *
 *	Copyright (C) 1989 Digital Equipment Corporation.
 *	Permission to use, copy, modify, and distribute this software and
 *	its documentation for any purpose and without fee is hereby granted,
 *	provided that the above copyright notice appears in all copies.  
 *	Digital Equipment Corporation makes no representations about the
 *	suitability of this software for any purpose.  It is provided "as is"
 *	without express or implied warranty.
 *
 * from: $Header: /sprite/src/kernel/dev/ds3100.md/RCS/devGraphics.c,
 *	v 9.2 90/02/13 22:16:24 shirriff Exp $ SPRITE (DECWRL)";
 */

/*
 * This file has all the routines common to the various frame buffer drivers
 * including a generic ioctl routine. The pmax_fb structure is passed into the
 * routines and has device specifics stored in it.
 * The LK201 keycode mapping routine is also here along with initialization
 * functions for the keyboard and mouse.
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/time.h>
#include <sys/kernel.h>
#include <sys/ioctl.h>
#include <sys/file.h>
#include <sys/vnode.h>
#include <sys/errno.h>
#include <sys/proc.h>
#include <sys/mman.h>
#include <sys/syslog.h>

#include <vm/vm.h>
#include <miscfs/specfs/specdev.h>

#include <machine/machConst.h>
#include <machine/pmioctl.h>

#include <pmax/dev/device.h>
#include <pmax/dev/font.c>
#include <pmax/dev/fbreg.h>

#include <pmax/stand/dec_prom.h>

#include <pmax/pmax/cons.h>
#include <pmax/pmax/pmaxtype.h>

#include <dc.h>
#include <scc.h>
#include <dtop.h>

void fbKbdEvent(), fbMouseEvent(), fbMouseButtons(), fbScroll();
void fbBlitc(), fbPutc();
extern int pmax_boardtype;
extern struct consdev cn_tab;
#if NDC > 0
#include <machine/dc7085cons.h>
extern int dcGetc(), dcparam();
extern void dcPutc();
#endif
#if NDTOP > 0
#include <pmax/dev/dtopreg.h>
extern void dtopKBDPutc();
#endif
#if NSCC > 0
#include <pmax/dev/sccreg.h>
extern int sccGetc(), sccparam();
extern void sccPutc();
#endif

/*
 * The default cursor.
 */
u_short defCursor[32] = { 
/* plane A */ 0x00FF, 0x00FF, 0x00FF, 0x00FF, 0x00FF, 0x00FF, 0x00FF, 0x00FF,
	      0x00FF, 0x00FF, 0x00FF, 0x00FF, 0x00FF, 0x00FF, 0x00FF, 0x00FF,
/* plane B */ 0x00FF, 0x00FF, 0x00FF, 0x00FF, 0x00FF, 0x00FF, 0x00FF, 0x00FF,
              0x00FF, 0x00FF, 0x00FF, 0x00FF, 0x00FF, 0x00FF, 0x00FF, 0x00FF

};

/*
 * Font mask bits used by fbBlitc().
 */
static unsigned int fontmaskBits[16] = {
	0x00000000,
	0x00000001,
	0x00000100,
	0x00000101,
	0x00010000,
	0x00010001,
	0x00010100,
	0x00010101,
	0x01000000,
	0x01000001,
	0x01000100,
	0x01000101,
	0x01010000,
	0x01010001,
	0x01010100,
	0x01010101
};

/*
 * Ascii values of command keys.
 */
#define KBD_TAB		'\t'
#define KBD_DEL		127
#define KBD_RET		'\r'

/*
 *  Define "hardware-independent" codes for the control, shift, meta and
 *  function keys.  Codes start after the last 7-bit ASCII code (127)
 *  and are assigned in an arbitrary order.
 */
#define KBD_NOKEY	128

#define KBD_F1		201
#define KBD_F2		202
#define KBD_F3		203
#define KBD_F4		204
#define KBD_F5		205
#define KBD_F6		206
#define KBD_F7		207
#define KBD_F8		208
#define KBD_F9		209
#define KBD_F10		210
#define KBD_F11		211
#define KBD_F12		212
#define KBD_F13		213
#define KBD_F14		214
#define KBD_HELP	215
#define KBD_DO		216
#define KBD_F17		217
#define KBD_F18		218
#define KBD_F19		219
#define KBD_F20		220

#define KBD_FIND	221
#define KBD_INSERT	222
#define KBD_REMOVE	223
#define KBD_SELECT	224
#define KBD_PREVIOUS	225
#define KBD_NEXT	226

#define KBD_KP_ENTER	227
#define KBD_KP_F1	228
#define KBD_KP_F2	229
#define KBD_KP_F3	230
#define KBD_KP_F4	231
#define KBD_LEFT	232
#define KBD_RIGHT	233
#define KBD_DOWN	234
#define KBD_UP		235

#define KBD_CONTROL	236
#define KBD_SHIFT	237
#define KBD_CAPSLOCK	238
#define KBD_ALTERNATE	239

/*
 * Keyboard to Ascii, unshifted.
 */
static unsigned char unshiftedAscii[] = {
/*  0 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/*  4 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/*  8 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/*  c */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 10 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 14 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 18 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 1c */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 20 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 24 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 28 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 2c */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 30 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 34 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 38 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 3c */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 40 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 44 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 48 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 4c */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 50 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 54 */ KBD_NOKEY,	KBD_NOKEY,	KBD_F1,		KBD_F2,
/* 58 */ KBD_F3,	KBD_F4,		KBD_F5,		KBD_NOKEY,
/* 5c */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 60 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 64 */ KBD_F6,	KBD_F7,		KBD_F8,		KBD_F9,
/* 68 */ KBD_F10,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 6c */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 70 */ KBD_NOKEY,	'\033',		KBD_F12,	KBD_F13,
/* 74 */ KBD_F14,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 78 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 7c */ KBD_HELP,	KBD_DO,		KBD_NOKEY,	KBD_NOKEY,
/* 80 */ KBD_F17,	KBD_F18,	KBD_F19,	KBD_F20,
/* 84 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 88 */ KBD_NOKEY,	KBD_NOKEY,	KBD_FIND,	KBD_INSERT,
/* 8c */ KBD_REMOVE,	KBD_SELECT,	KBD_PREVIOUS,	KBD_NEXT,
/* 90 */ KBD_NOKEY,	KBD_NOKEY,	'0',		KBD_NOKEY,
/* 94 */ '.',		KBD_KP_ENTER,	'1',		'2',
/* 98 */ '3',		'4',		'5',		'6',
/* 9c */ ',',		'7',		'8',		'9',
/* a0 */ '-',		KBD_KP_F1,	KBD_KP_F2,	KBD_KP_F3,
/* a4 */ KBD_KP_F4,	KBD_NOKEY,	KBD_NOKEY,	KBD_LEFT,
/* a8 */ KBD_RIGHT,	KBD_DOWN, 	KBD_UP,		KBD_NOKEY,
/* ac */ KBD_NOKEY,	KBD_NOKEY,	KBD_SHIFT,	KBD_CONTROL,
/* b0 */ KBD_CAPSLOCK,	KBD_ALTERNATE,	KBD_NOKEY,	KBD_NOKEY,
/* b4 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* b8 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* bc */ KBD_DEL,	KBD_RET,	KBD_TAB,	'`',
/* c0 */ '1',		'q',		'a',		'z',
/* c4 */ KBD_NOKEY,	'2',		'w',		's',
/* c8 */ 'x',		'<',		KBD_NOKEY,	'3',
/* cc */ 'e',		'd',		'c',		KBD_NOKEY,
/* d0 */ '4',		'r',		'f',		'v',
/* d4 */ ' ',		KBD_NOKEY,	'5',		't',
/* d8 */ 'g',		'b',		KBD_NOKEY,	'6',
/* dc */ 'y',		'h',		'n',		KBD_NOKEY,
/* e0 */ '7',		'u',		'j',		'm',
/* e4 */ KBD_NOKEY,	'8',		'i',		'k',
/* e8 */ ',',		KBD_NOKEY,	'9',		'o',
/* ec */ 'l',		'.',		KBD_NOKEY,	'0',
/* f0 */ 'p',		KBD_NOKEY,	';',		'/',
/* f4 */ KBD_NOKEY,	'=',		']',		'\\',
/* f8 */ KBD_NOKEY,	'-',		'[',		'\'',
/* fc */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
};

/*
 * Keyboard to Ascii, shifted.
 */
static unsigned char shiftedAscii[] = {
/*  0 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/*  4 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/*  8 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/*  c */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 10 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 14 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 18 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 1c */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 20 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 24 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 28 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 2c */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 30 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 34 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 38 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 3c */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 40 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 44 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 48 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 4c */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 50 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 54 */ KBD_NOKEY,	KBD_NOKEY,	KBD_F1,		KBD_F2,
/* 58 */ KBD_F3,	KBD_F4,		KBD_F5,		KBD_NOKEY,
/* 5c */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 60 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 64 */ KBD_F6,	KBD_F7,		KBD_F8,		KBD_F9,
/* 68 */ KBD_F10,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 6c */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 70 */ KBD_NOKEY,	KBD_F11,	KBD_F12,	KBD_F13,
/* 74 */ KBD_F14,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 78 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 7c */ KBD_HELP,	KBD_DO,		KBD_NOKEY,	KBD_NOKEY,
/* 80 */ KBD_F17,	KBD_F18,	KBD_F19,	KBD_F20,
/* 84 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* 88 */ KBD_NOKEY,	KBD_NOKEY,	KBD_FIND,	KBD_INSERT,
/* 8c */ KBD_REMOVE,	KBD_SELECT,	KBD_PREVIOUS,	KBD_NEXT,
/* 90 */ KBD_NOKEY,	KBD_NOKEY,	'0',		KBD_NOKEY,
/* 94 */ '.',		KBD_KP_ENTER,	'1',		'2',
/* 98 */ '3',		'4',		'5',		'6',
/* 9c */ ',',		'7',		'8',		'9',
/* a0 */ '-',		KBD_KP_F1,	KBD_KP_F2,	KBD_KP_F3,
/* a4 */ KBD_KP_F4,	KBD_NOKEY,	KBD_NOKEY,	KBD_LEFT,
/* a8 */ KBD_RIGHT,	KBD_DOWN, 	KBD_UP,		KBD_NOKEY,
/* ac */ KBD_NOKEY,	KBD_NOKEY,	KBD_SHIFT,	KBD_CONTROL,
/* b0 */ KBD_CAPSLOCK,	KBD_ALTERNATE,	KBD_NOKEY,	KBD_NOKEY,
/* b4 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* b8 */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
/* bc */ KBD_DEL,	KBD_RET,	KBD_TAB,	'~',
/* c0 */ '!',		'q',		'a',		'z',
/* c4 */ KBD_NOKEY,	'@',		'w',		's',
/* c8 */ 'x',		'>',		KBD_NOKEY,	'#',
/* cc */ 'e',		'd',		'c',		KBD_NOKEY,
/* d0 */ '$',		'r',		'f',		'v',
/* d4 */ ' ',		KBD_NOKEY,	'%',		't',
/* d8 */ 'g',		'b',		KBD_NOKEY,	'^',
/* dc */ 'y',		'h',		'n',		KBD_NOKEY,
/* e0 */ '&',		'u',		'j',		'm',
/* e4 */ KBD_NOKEY,	'*',		'i',		'k',
/* e8 */ '<',		KBD_NOKEY,	'(',		'o',
/* ec */ 'l',		'>',		KBD_NOKEY,	')',
/* f0 */ 'p',		KBD_NOKEY,	':',		'?',
/* f4 */ KBD_NOKEY,	'+',		'}',		'|',
/* f8 */ KBD_NOKEY,	'_',		'{',		'"',
/* fc */ KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,	KBD_NOKEY,
};

/* 
 * Keyboard initialization string.
 */
static u_char kbdInitString[] = {
	LK_LED_ENABLE, LED_ALL,		/* show we are resetting keyboard */
	LK_DEFAULTS,
	LK_CMD_MODE(LK_AUTODOWN, 1), 
	LK_CMD_MODE(LK_AUTODOWN, 2), 
	LK_CMD_MODE(LK_AUTODOWN, 3), 
	LK_CMD_MODE(LK_DOWN, 4),	/* could also be LK_AUTODOWN */
	LK_CMD_MODE(LK_UPDOWN, 5),   
	LK_CMD_MODE(LK_UPDOWN, 6),   
	LK_CMD_MODE(LK_AUTODOWN, 7), 
	LK_CMD_MODE(LK_AUTODOWN, 8), 
	LK_CMD_MODE(LK_AUTODOWN, 9), 
	LK_CMD_MODE(LK_AUTODOWN, 10), 
	LK_CMD_MODE(LK_AUTODOWN, 11), 
	LK_CMD_MODE(LK_AUTODOWN, 12), 
	LK_CMD_MODE(LK_DOWN, 13), 
	LK_CMD_MODE(LK_AUTODOWN, 14),
	LK_AR_ENABLE,			/* we want autorepeat by default */
	LK_CL_ENABLE, 0x83,		/* keyclick, volume */
	LK_KBD_ENABLE,			/* the keyboard itself */
	LK_BELL_ENABLE, 0x83,		/* keyboard bell, volume */
	LK_LED_DISABLE, LED_ALL,	/* clear keyboard leds */
};

/*
 *----------------------------------------------------------------------
 *
 * fbKbdEvent --
 *
 *	Process a received character.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	Events added to the queue.
 *
 *----------------------------------------------------------------------
 */
void
fbKbdEvent(ch, fp)
	int ch;
	register struct pmax_fb *fp;
{
	register pmEvent *eventPtr;
	int i;

	if (!fp->GraphicsOpen)
		return;

	/*
	 * See if there is room in the queue.
	 */
	i = PM_EVROUND(fp->fbu->scrInfo.qe.eTail + 1);
	if (i == fp->fbu->scrInfo.qe.eHead)
		return;

	/*
	 * Add the event to the queue.
	 */
	eventPtr = &fp->fbu->events[fp->fbu->scrInfo.qe.eTail];
	eventPtr->type = BUTTON_RAW_TYPE;
	eventPtr->device = KEYBOARD_DEVICE;
	eventPtr->x = fp->fbu->scrInfo.mouse.x;
	eventPtr->y = fp->fbu->scrInfo.mouse.y;
	eventPtr->time = TO_MS(time);
	eventPtr->key = ch;
	fp->fbu->scrInfo.qe.eTail = i;
	selwakeup(&fp->selp);
}

/*
 *----------------------------------------------------------------------
 *
 * fbMouseEvent --
 *
 *	Process a mouse event.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	An event is added to the event queue.
 *
 *----------------------------------------------------------------------
 */
void
fbMouseEvent(newRepPtr, fp) 
	register MouseReport *newRepPtr;
	register struct pmax_fb *fp;
{
	unsigned milliSec;
	int i;
	pmEvent *eventPtr;

	if (!fp->GraphicsOpen)
		return;

	milliSec = TO_MS(time);

	/*
	 * Check to see if we have to accelerate the mouse
	 */
	if (fp->fbu->scrInfo.mscale >= 0) {
		if (newRepPtr->dx >= fp->fbu->scrInfo.mthreshold) {
			newRepPtr->dx +=
				(newRepPtr->dx - fp->fbu->scrInfo.mthreshold) *
				fp->fbu->scrInfo.mscale;
		}
		if (newRepPtr->dy >= fp->fbu->scrInfo.mthreshold) {
			newRepPtr->dy +=
				(newRepPtr->dy - fp->fbu->scrInfo.mthreshold) *
				fp->fbu->scrInfo.mscale;
		}
	}

	/*
	 * Update mouse position
	 */
	if (newRepPtr->state & MOUSE_X_SIGN) {
		fp->fbu->scrInfo.mouse.x += newRepPtr->dx;
		if (fp->fbu->scrInfo.mouse.x > fp->fbu->scrInfo.max_cur_x)
			fp->fbu->scrInfo.mouse.x = fp->fbu->scrInfo.max_cur_x;
	} else {
		fp->fbu->scrInfo.mouse.x -= newRepPtr->dx;
		if (fp->fbu->scrInfo.mouse.x < fp->fbu->scrInfo.min_cur_x)
			fp->fbu->scrInfo.mouse.x = fp->fbu->scrInfo.min_cur_x;
	}
	if (newRepPtr->state & MOUSE_Y_SIGN) {
		fp->fbu->scrInfo.mouse.y -= newRepPtr->dy;
		if (fp->fbu->scrInfo.mouse.y < fp->fbu->scrInfo.min_cur_y)
			fp->fbu->scrInfo.mouse.y = fp->fbu->scrInfo.min_cur_y;
	} else {
		fp->fbu->scrInfo.mouse.y += newRepPtr->dy;
		if (fp->fbu->scrInfo.mouse.y > fp->fbu->scrInfo.max_cur_y)
			fp->fbu->scrInfo.mouse.y = fp->fbu->scrInfo.max_cur_y;
	}

	/*
	 * Move the hardware cursor.
	 */
	(*fp->posCursor)(fp->fbu->scrInfo.mouse.x, fp->fbu->scrInfo.mouse.y);

	/*
	 * Store the motion event in the motion buffer.
	 */
	fp->fbu->tcs[fp->fbu->scrInfo.qe.tcNext].time = milliSec;
	fp->fbu->tcs[fp->fbu->scrInfo.qe.tcNext].x = fp->fbu->scrInfo.mouse.x;
	fp->fbu->tcs[fp->fbu->scrInfo.qe.tcNext].y = fp->fbu->scrInfo.mouse.y;
	if (++fp->fbu->scrInfo.qe.tcNext >= MOTION_BUFFER_SIZE)
		fp->fbu->scrInfo.qe.tcNext = 0;
	if (fp->fbu->scrInfo.mouse.y < fp->fbu->scrInfo.mbox.bottom &&
	    fp->fbu->scrInfo.mouse.y >=  fp->fbu->scrInfo.mbox.top &&
	    fp->fbu->scrInfo.mouse.x < fp->fbu->scrInfo.mbox.right &&
	    fp->fbu->scrInfo.mouse.x >=  fp->fbu->scrInfo.mbox.left)
		return;

	fp->fbu->scrInfo.mbox.bottom = 0;
	if (PM_EVROUND(fp->fbu->scrInfo.qe.eTail + 1) == fp->fbu->scrInfo.qe.eHead)
		return;

	i = PM_EVROUND(fp->fbu->scrInfo.qe.eTail - 1);
	if ((fp->fbu->scrInfo.qe.eTail != fp->fbu->scrInfo.qe.eHead) && 
	    (i != fp->fbu->scrInfo.qe.eHead)) {
		pmEvent *eventPtr;

		eventPtr = &fp->fbu->events[i];
		if (eventPtr->type == MOTION_TYPE) {
			eventPtr->x = fp->fbu->scrInfo.mouse.x;
			eventPtr->y = fp->fbu->scrInfo.mouse.y;
			eventPtr->time = milliSec;
			eventPtr->device = MOUSE_DEVICE;
			return;
		}
	}
	/*
	 * Put event into queue and wakeup any waiters.
	 */
	eventPtr = &fp->fbu->events[fp->fbu->scrInfo.qe.eTail];
	eventPtr->type = MOTION_TYPE;
	eventPtr->time = milliSec;
	eventPtr->x = fp->fbu->scrInfo.mouse.x;
	eventPtr->y = fp->fbu->scrInfo.mouse.y;
	eventPtr->device = MOUSE_DEVICE;
	fp->fbu->scrInfo.qe.eTail = PM_EVROUND(fp->fbu->scrInfo.qe.eTail + 1);
	selwakeup(&fp->selp);
}

/*
 *----------------------------------------------------------------------
 *
 * fbMouseButtons --
 *
 *	Process mouse buttons.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */
void
fbMouseButtons(newRepPtr, fp)
	MouseReport *newRepPtr;
	register struct pmax_fb *fp;
{
	static char temp, oldSwitch, newSwitch;
	int i, j;
	pmEvent *eventPtr;
	static MouseReport lastRep;

	if (!fp->GraphicsOpen)
		return;

	newSwitch = newRepPtr->state & 0x07;