301 lines
6.7 KiB
C
301 lines
6.7 KiB
C
/*
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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 code is derived from software contributed to Berkeley by
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* Sony Corp. and Kazumasa Utashiro of Software Research Associates, Inc.
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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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* @(#)kbms_if.c 8.1 (Berkeley) 6/11/93
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*/
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/* Keyboard Mouse Gate-array control routine */
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#include "ms.h"
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#include "kb.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <machine/adrsmap.h>
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#include <newsmips/dev/scc.h>
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typedef struct kbm_sw {
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u_char *stat_port; /* Status port */
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u_char *data_port; /* Data port */
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u_char *intr_port; /* Interrupt port */
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u_char *reset_port; /* Reset port */
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u_char *init1_port; /* Initialize port 1 */
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u_char *init2_port; /* Initialize port 2 */
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u_char *buzz_port; /* Buzzer port */
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u_char *buzzf_port; /* Buzzer frequency port */
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u_char intr_en; /* Data for Interrupt Enable */
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u_char intr_in; /* Interrupt Occur flag */
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u_char data_rdy; /* Data Ready flag */
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u_char init1; /* Speed */
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u_char init2; /* Clock */
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u_char buzzf; /* Buzzer frequency */
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} Kbm_sw;
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#define OFF 0x80
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static struct kbm_sw Kbm_port[] = {
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{
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#ifdef news3400
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(u_char *) MOUSE_STAT,
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#else
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(u_char *) KEYB_STAT,
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#endif
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(u_char *) MOUSE_DATA,
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(u_char *) MOUSE_INTE,
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(u_char *) MOUSE_RESET,
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(u_char *) MOUSE_INIT1,
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(u_char *) MOUSE_INIT2,
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(u_char *) KEYB_BUZZ,
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(u_char *) KEYB_BUZZF,
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RX_MSINTE,
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RX_MSINT,
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RX_MSRDY,
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#ifdef news3400
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0x80, /* 1200 bps */
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0,
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0
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#else
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1,
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0xe0,
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0x0a
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#endif
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},
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{
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(u_char *) KEYB_STAT,
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(u_char *) KEYB_DATA,
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(u_char *) KEYB_INTE,
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(u_char *) KEYB_RESET,
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(u_char *) KEYB_INIT1,
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(u_char *) KEYB_INIT2,
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(u_char *) KEYB_BUZZ,
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(u_char *) KEYB_BUZZF,
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RX_KBINTE,
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RX_KBINT,
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RX_KBRDY,
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#ifdef news3400
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0xf0, /* 9600 bps */
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0,
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0
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#else
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0,
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0xc0,
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0x0a
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#endif
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}
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};
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extern int kbd_flush();
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void
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kbm_open(chan)
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int chan;
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{
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register Kbm_sw *kbm = &Kbm_port[chan];
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#ifdef news3400
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/*
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* Reset KB I/F.
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* Disable KB interrupt.
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* Clear KB overrun flag.
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*/
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*(volatile u_char *)kbm->reset_port = (u_char)0x01;
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*(volatile u_char *)kbm->init1_port = kbm->init1;
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if (chan == SCC_MOUSE)
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*(volatile u_char *)kbm->intr_port |= kbm->intr_en;
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#else
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*kbm->reset_port = (u_char)0;
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*kbm->intr_port = (u_char)1;
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#endif
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kbd_flush();
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}
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void
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kbm_close(chan)
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int chan;
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{
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register Kbm_sw *kbm = &Kbm_port[chan];
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#ifdef news3400
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*(volatile u_char *)kbm->reset_port = (u_char)0x01;
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#else
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*kbm->reset_port = (u_char)0;
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*kbm->intr_port = (u_char)0;
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#endif
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}
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void
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kbm_rint(chan)
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int chan;
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{
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#ifdef news3400
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volatile u_char *port = (volatile u_char *)Kbm_port[chan].data_port;
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volatile u_char *stat = (volatile u_char *)Kbm_port[chan].stat_port;
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volatile u_char *inte = (volatile u_char *)Kbm_port[chan].intr_port;
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#else
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register u_char *port = Kbm_port[chan].data_port;
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register u_char *stat = Kbm_port[chan].stat_port;
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register u_char *inte = Kbm_port[chan].intr_port;
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#endif
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int rdy = Kbm_port[chan].data_rdy;
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u_char code;
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#ifdef news3400
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*inte &= ~Kbm_port[chan].intr_en;
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#endif
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while (*stat & rdy) {
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code = *port;
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switch (chan) {
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case SCC_MOUSE: {
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#if NMS > 0
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extern void _ms_helper();
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if (xputc(code, SCC_MOUSE) < 0)
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printf("mouse queue overflow\n");
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/* KU:XXX softcall? */
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timeout(_ms_helper, (caddr_t)0, 0);
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#endif
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break;
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}
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case SCC_KEYBOARD: {
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#if NKB > 0
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extern void kb_softint();
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if (xputc(code, SCC_KEYBOARD) < 0)
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printf("keyboard queue overflow\n");
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/* KU:XXX softcall? */
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timeout(kb_softint, (caddr_t)0, 0);
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#endif
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break;
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}
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default:
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printf("kb or ms stray intr\n");
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break;
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}
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}
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#ifdef news3400
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*inte |= Kbm_port[chan].intr_en;
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#else
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*inte = 1;
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#endif
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}
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int
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kbm_write(chan, buf, count)
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int chan;
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char *buf;
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register int count;
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{
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register u_char *port = Kbm_port[chan].buzz_port;
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int c_save = count;
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#ifdef news3400
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*port = count / 3;
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#endif
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return (c_save);
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}
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int
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kbm_getc(chan)
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int chan;
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{
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#ifdef news3400
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volatile u_char *port = (volatile u_char *)Kbm_port[chan].data_port;
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volatile u_char *stat = (volatile u_char *)Kbm_port[chan].stat_port;
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#else
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register u_char *port = Kbm_port[chan].data_port;
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register u_char *stat = Kbm_port[chan].stat_port;
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#endif
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int rdy = Kbm_port[chan].data_rdy;
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if (*stat & rdy)
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return (*port & 0xff);
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else
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return -1;
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}
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#ifdef CPU_SINGLE
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/*
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* small ring buffers for keyboard/mouse
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*/
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static struct ring_buf {
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u_char head;
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u_char tail;
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u_char count;
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u_char buf[13];
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} ring_buf[2];
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int
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xputc(c, chan)
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u_char c;
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int chan;
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{
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register struct ring_buf *p = &ring_buf[chan];
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int s = splhigh();
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if (p->count >= sizeof (p->buf)) {
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splx(s);
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return -1;
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}
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p->buf[p->head] = c;
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if (++p->head >= sizeof (p->buf))
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p->head = 0;
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p->count++;
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splx(s);
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return c;
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}
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int
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xgetc(chan)
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int chan;
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{
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register struct ring_buf *p = &ring_buf[chan];
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int c;
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int s = splhigh();
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if (p->count == 0) {
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splx(s);
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return -1;
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}
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c = p->buf[p->tail];
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if (++p->tail >= sizeof (p->buf))
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p->tail = 0;
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p->count--;
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splx(s);
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return c;
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}
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#endif /* CPU_SINGLE */
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