175 lines
4.6 KiB
C
175 lines
4.6 KiB
C
/* $NetBSD: dcm.c,v 1.9 1996/02/27 22:11:44 scottr Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1988 University of Utah.
|
|
* Copyright (c) 1990, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* the Systems Programming Group of the University of Utah Computer
|
|
* Science Department.
|
|
*
|
|
* 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.
|
|
*
|
|
* @(#)dcm.c 8.1 (Berkeley) 6/10/93
|
|
*/
|
|
|
|
#ifdef DCMCONSOLE
|
|
#include <sys/param.h>
|
|
#include <dev/cons.h>
|
|
|
|
#include <hp300/dev/device.h>
|
|
#include <hp300/dev/dcmreg.h>
|
|
#include <hp300/stand/consdefs.h>
|
|
#include <hp300/stand/samachdep.h>
|
|
|
|
struct dcmdevice *dcmcnaddr = NULL;
|
|
|
|
#define DCMCONUNIT 0 /* XXX */
|
|
|
|
void
|
|
dcmprobe(cp)
|
|
struct consdev *cp;
|
|
{
|
|
extern struct hp_hw sc_table[];
|
|
register struct hp_hw *hw;
|
|
register struct dcmdevice *dcm;
|
|
|
|
for (hw = sc_table; hw < &sc_table[MAXCTLRS]; hw++)
|
|
if (HW_ISDEV(hw, D_COMMDCM) && !badaddr((caddr_t)hw->hw_kva))
|
|
break;
|
|
if (!HW_ISDEV(hw, D_COMMDCM)) {
|
|
cp->cn_pri = CN_DEAD;
|
|
return;
|
|
}
|
|
dcmcnaddr = (struct dcmdevice *) hw->hw_kva;
|
|
|
|
dcm = dcmcnaddr;
|
|
switch (dcm->dcm_rsid) {
|
|
case DCMID:
|
|
cp->cn_pri = CN_NORMAL;
|
|
break;
|
|
case DCMID|DCMCON:
|
|
cp->cn_pri = CN_REMOTE;
|
|
break;
|
|
default:
|
|
cp->cn_pri = CN_DEAD;
|
|
break;
|
|
}
|
|
|
|
curcons_scode = hw->hw_sc;
|
|
}
|
|
|
|
void
|
|
dcminit(cp)
|
|
struct consdev *cp;
|
|
{
|
|
register struct dcmdevice *dcm = dcmcnaddr;
|
|
register int port = DCMCONUNIT;
|
|
|
|
dcm->dcm_ic = IC_ID;
|
|
while (dcm->dcm_thead[port].ptr != dcm->dcm_ttail[port].ptr)
|
|
;
|
|
dcm->dcm_data[port].dcm_baud = BR_9600;
|
|
dcm->dcm_data[port].dcm_conf = LC_8BITS | LC_1STOP;
|
|
SEM_LOCK(dcm);
|
|
dcm->dcm_cmdtab[port].dcm_data |= CT_CON;
|
|
dcm->dcm_cr |= (1 << port);
|
|
SEM_UNLOCK(dcm);
|
|
DELAY(15000);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
#ifndef SMALL
|
|
int
|
|
dcmgetchar(dev)
|
|
dev_t dev;
|
|
{
|
|
register struct dcmdevice *dcm = dcmcnaddr;
|
|
register struct dcmrfifo *fifo;
|
|
register struct dcmpreg *pp;
|
|
register unsigned head;
|
|
int c, stat, port;
|
|
|
|
port = DCMCONUNIT;
|
|
pp = dcm_preg(dcm, port);
|
|
head = pp->r_head & RX_MASK;
|
|
if (head == (pp->r_tail & RX_MASK))
|
|
return(0);
|
|
fifo = &dcm->dcm_rfifos[3-port][head>>1];
|
|
c = fifo->data_char;
|
|
stat = fifo->data_stat;
|
|
pp->r_head = (head + 2) & RX_MASK;
|
|
SEM_LOCK(dcm);
|
|
stat = dcm->dcm_iir;
|
|
SEM_UNLOCK(dcm);
|
|
return(c);
|
|
}
|
|
#else
|
|
int
|
|
dcmgetchar(dev)
|
|
dev_t dev;
|
|
{
|
|
return(0);
|
|
}
|
|
#endif
|
|
|
|
/* ARGSUSED */
|
|
void
|
|
dcmputchar(dev, c)
|
|
dev_t dev;
|
|
register int c;
|
|
{
|
|
register struct dcmdevice *dcm = dcmcnaddr;
|
|
register struct dcmpreg *pp;
|
|
register int timo;
|
|
unsigned tail;
|
|
int port, stat;
|
|
|
|
port = DCMCONUNIT;
|
|
pp = dcm_preg(dcm, port);
|
|
tail = pp->t_tail & TX_MASK;
|
|
timo = 50000;
|
|
while (tail != (pp->t_head & TX_MASK) && --timo)
|
|
;
|
|
dcm->dcm_tfifos[3-port][tail].data_char = c;
|
|
pp->t_tail = tail = (tail + 1) & TX_MASK;
|
|
SEM_LOCK(dcm);
|
|
dcm->dcm_cmdtab[port].dcm_data |= CT_TX;
|
|
dcm->dcm_cr |= (1 << port);
|
|
SEM_UNLOCK(dcm);
|
|
timo = 1000000;
|
|
while (tail != (pp->t_head & TX_MASK) && --timo)
|
|
;
|
|
SEM_LOCK(dcm);
|
|
stat = dcm->dcm_iir;
|
|
SEM_UNLOCK(dcm);
|
|
}
|
|
#endif
|