398 lines
9.0 KiB
C
398 lines
9.0 KiB
C
/* $NetBSD: ms.c,v 1.3 1995/07/27 06:35:46 leo Exp $
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/*
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* Copyright (c) 1995 Leo Weppelman.
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* All rights reserved.
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*
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* based on:
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*
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* Copyright (c) 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This software was developed by the Computer Systems Engineering group
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* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
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* contributed to Berkeley.
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*
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* All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Lawrence Berkeley Laboratory.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ms.c 8.1 (Berkeley) 6/11/93
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*
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* Header: ms.c,v 1.5 92/11/26 01:28:47 torek Exp (LBL)
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*/
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/*
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* Mouse driver.
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*/
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/ioctl.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/systm.h>
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#include <sys/tty.h>
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#include <atari/dev/event_var.h>
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#include <atari/dev/vuid_event.h>
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#include "mouse.h"
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#if NMOUSE > 0
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/* there's really no more physical ports on an atari. */
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#if NMOUSE > 1
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#undef NMOUSE
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#define NMOUSE 1
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#endif
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typedef void (*FPV)();
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/*
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* Mouse specific packages produced by the keyboard. Currently, we only
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* define the REL_MOUSE package, as this is the only one used.
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*/
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typedef struct {
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u_char id;
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char dx;
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char dy;
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} REL_MOUSE;
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#define IS_REL_MOUSE(id) (((u_int)(id) & 0xF8) == 0xF8)
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#define TIMEOUT_ID (0xFC)
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static struct ms_softc {
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u_char ms_buttons; /* button states */
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struct evvar ms_events; /* event queue state */
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int ms_dx; /* accumulated dx */
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int ms_dy; /* accumulated dy */
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struct firm_event ms_bq[2]; /* Button queue */
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int ms_bq_idx; /* Button queue index */
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} ms_softc[NMOUSE];
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static void ms_3b_delay __P((struct ms_softc *));
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void mouse_soft __P((REL_MOUSE *, int));
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int
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mouseattach(cnt)
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int cnt;
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{
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printf("1 mouse configured\n");
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return(NMOUSE);
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}
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static void
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ms_3b_delay(ms)
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struct ms_softc *ms;
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{
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REL_MOUSE rel_ms;
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rel_ms.id = TIMEOUT_ID;
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rel_ms.dx = rel_ms.dy = 0;
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mouse_soft(&rel_ms, sizeof(rel_ms));
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}
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/*
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* Note that we are called from the keyboard software interrupt!
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*/
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void
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mouse_soft(rel_ms, size)
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REL_MOUSE *rel_ms;
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int size;
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{
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struct ms_softc *ms = &ms_softc[0];
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struct firm_event *fe, *fe2;
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int get, put;
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int sps;
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u_char mbut, bmask;
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int is_timeout;
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int flush_buttons;
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int id;
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if (!IS_REL_MOUSE(rel_ms->id))
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return; /* Probably some other message */
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if (ms->ms_events.ev_io == NULL)
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return;
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sps = splev();
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get = ms->ms_events.ev_get;
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put = ms->ms_events.ev_put;
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fe = &ms->ms_events.ev_q[put];
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if (rel_ms->id == TIMEOUT_ID) {
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is_timeout = 1;
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id = ms->ms_buttons;
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}
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else {
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is_timeout = 0;
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id = (rel_ms->id & 3) | (ms->ms_buttons & 4);
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}
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if (!is_timeout && ms->ms_bq_idx)
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untimeout((FPV)ms_3b_delay, (void *)ms);
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/*
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* Button states are encoded in the lower 2 bits of 'id'
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*/
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if (!(mbut = (id ^ ms->ms_buttons)) && (put != get)) {
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/*
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* Compact dx/dy messages. Always generate an event when
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* a button is pressed or the event queue is empty.
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*/
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ms->ms_dx += rel_ms->dx;
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ms->ms_dy += rel_ms->dy;
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goto out;
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}
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rel_ms->dx += ms->ms_dx;
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rel_ms->dy += ms->ms_dy;
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ms->ms_dx = ms->ms_dy = 0;
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/*
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* Output location events _before_ button events ie. make sure
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* the button is pressed at the correct location.
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*/
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if (rel_ms->dx) {
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if ((++put) % EV_QSIZE == get) {
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put--;
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goto out;
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}
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fe->id = LOC_X_DELTA;
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fe->value = rel_ms->dx;
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fe->time = time;
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if (put >= EV_QSIZE) {
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put = 0;
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fe = &ms->ms_events.ev_q[0];
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}
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else fe++;
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}
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if (rel_ms->dy) {
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if ((++put) % EV_QSIZE == get) {
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put--;
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goto out;
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}
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fe->id = LOC_Y_DELTA;
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fe->value = rel_ms->dy;
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fe->time = time;
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if (put >= EV_QSIZE) {
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put = 0;
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fe = &ms->ms_events.ev_q[0];
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}
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else fe++;
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}
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if (mbut && !is_timeout) {
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for (bmask = 1; bmask < 0x04; bmask <<= 1) {
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if (!(mbut & bmask))
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continue;
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fe2 = &ms->ms_bq[ms->ms_bq_idx++];
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fe2->id = bmask & 1 ? MS_RIGHT : MS_LEFT;
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fe2->value = id & bmask ? VKEY_DOWN : VKEY_UP;
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fe2->time = time;
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}
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}
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if (ms->ms_bq_idx) {
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/*
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* We have at least one button, handle it.
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*/
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flush_buttons = (is_timeout) ? 1 : 0;
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if (ms->ms_bq_idx == 2) {
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if (ms->ms_bq[0].value == ms->ms_bq[1].value) {
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/* Must be 2 button presses! */
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if (ms->ms_bq[0].id != ms->ms_bq[1].id) {
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ms->ms_bq[0].id = MS_MIDDLE;
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ms->ms_bq_idx = 1;
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id = 7;
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}
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}
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flush_buttons = 1;
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}
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else {
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if (ms->ms_bq[0].value == VKEY_UP) {
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/*
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* Release of a button is always flushed
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* immediately. If the middle button is
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* active, the release event is his. Mark
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* all buttons released, this also surpresses
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* a spurious release event of the not-yet-
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* released button.
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*/
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if( id & 4) {
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ms->ms_bq[0].id = MS_MIDDLE;
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id = 0;
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}
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flush_buttons = 1;
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}
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else if (!is_timeout) {
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timeout((FPV)ms_3b_delay, (void *)ms, 10);
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goto out;
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}
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}
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if (flush_buttons) {
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int i;
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for (i = 0; i < ms->ms_bq_idx; i++) {
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if ((++put) % EV_QSIZE == get) {
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ms->ms_bq_idx = 0;
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put--;
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goto out;
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}
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*fe = ms->ms_bq[i];
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if (put >= EV_QSIZE) {
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put = 0;
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fe = &ms->ms_events.ev_q[0];
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}
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else fe++;
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}
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ms->ms_bq_idx = 0;
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}
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}
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out:
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ms->ms_events.ev_put = put;
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ms->ms_buttons = id;
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splx(sps);
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EV_WAKEUP(&ms->ms_events);
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}
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int
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msopen(dev, flags, mode, p)
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dev_t dev;
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int flags, mode;
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struct proc *p;
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{
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u_char report_ms[] = { 0x08 };
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struct ms_softc *ms;
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int unit;
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unit = minor(dev);
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ms = &ms_softc[unit];
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if (unit >= NMOUSE)
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return(EXDEV);
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if (ms->ms_events.ev_io)
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return(EBUSY);
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ms->ms_events.ev_io = p;
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ms->ms_dx = ms->ms_dy = 0;
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ms->ms_buttons = 0;
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ms->ms_bq[0].id = ms->ms_bq[1].id = 0;
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ms->ms_bq_idx = 0;
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ev_init(&ms->ms_events); /* may cause sleep */
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/*
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* Enable mouse reporting.
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*/
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kbd_write(report_ms, sizeof(report_ms));
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return(0);
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}
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int
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msclose(dev, flags, mode, p)
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dev_t dev;
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int flags, mode;
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struct proc *p;
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{
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u_char disable_ms[] = { 0x12 };
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int unit;
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struct ms_softc *ms;
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unit = minor (dev);
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ms = &ms_softc[unit];
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/*
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* Turn off mouse interrogation.
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*/
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kbd_write(disable_ms, sizeof(disable_ms));
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ev_fini(&ms->ms_events);
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ms->ms_events.ev_io = NULL;
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return(0);
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}
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int
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msread(dev, uio, flags)
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dev_t dev;
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struct uio *uio;
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int flags;
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{
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struct ms_softc *ms;
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ms = &ms_softc[minor(dev)];
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return(ev_read(&ms->ms_events, uio, flags));
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}
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int
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msioctl(dev, cmd, data, flag, p)
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dev_t dev;
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u_long cmd;
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register caddr_t data;
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int flag;
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struct proc *p;
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{
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struct ms_softc *ms;
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int unit;
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unit = minor(dev);
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ms = &ms_softc[unit];
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switch (cmd) {
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case FIONBIO: /* we will remove this someday (soon???) */
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return(0);
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case FIOASYNC:
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ms->ms_events.ev_async = *(int *)data != 0;
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return(0);
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case TIOCSPGRP:
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if (*(int *)data != ms->ms_events.ev_io->p_pgid)
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return(EPERM);
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return(0);
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case VUIDGFORMAT: /* we only do firm_events */
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*(int *)data = VUID_FIRM_EVENT;
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return(0);
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case VUIDSFORMAT:
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if (*(int *)data != VUID_FIRM_EVENT)
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return(EINVAL);
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return(0);
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}
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return(ENOTTY);
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}
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int
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msselect(dev, rw, p)
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dev_t dev;
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int rw;
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struct proc *p;
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{
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struct ms_softc *ms;
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ms = &ms_softc[minor(dev)];
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return(ev_select(&ms->ms_events, rw, p));
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}
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#endif /* NMOUSE > 0 */
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