NetBSD/sys/dev/rcons/rcons_kern.c

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/* $NetBSD: rcons_kern.c,v 1.12 2000/03/23 07:01:43 thorpej Exp $ */
/*
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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, Lawrence Berkeley Laboratory.
*
* 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.
*
* @(#)rcons_kern.c 8.1 (Berkeley) 6/11/93
*/
#include <sys/param.h>
#include <sys/device.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/proc.h>
#include <dev/rcons/raster.h>
#include <dev/rcons/rcons.h>
static void rcons_belltmr(void *);
static struct rconsole *mydevicep; /* XXX */
static void rcons_output __P((struct tty *));
void
rcons_cnputc(c)
int c;
{
char buf[1];
long attr;
/* Swap in kernel attribute */
attr = mydevicep->rc_attr;
mydevicep->rc_attr = mydevicep->rc_kern_attr;
if (c == '\n')
rcons_puts(mydevicep, "\r\n", 2);
else {
buf[0] = c;
rcons_puts(mydevicep, buf, 1);
}
/* Swap out kernel attribute */
mydevicep->rc_attr = attr;
}
static void
rcons_output(tp)
struct tty *tp;
{
int s, n;
char buf[OBUFSIZ];
s = spltty();
if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP)) {
splx(s);
return;
}
tp->t_state |= TS_BUSY;
splx(s);
n = q_to_b(&tp->t_outq, buf, sizeof(buf));
rcons_puts(mydevicep, buf, n);
s = spltty();
tp->t_state &= ~TS_BUSY;
/* Come back if there's more to do */
if (tp->t_outq.c_cc) {
tp->t_state |= TS_TIMEOUT;
callout_reset(&tp->t_rstrt_ch, 1, ttrstrt, tp);
}
if (tp->t_outq.c_cc <= tp->t_lowat) {
if (tp->t_state&TS_ASLEEP) {
tp->t_state &= ~TS_ASLEEP;
wakeup((caddr_t)&tp->t_outq);
}
selwakeup(&tp->t_wsel);
}
splx(s);
}
/* Ring the console bell */
void
rcons_bell(rc)
struct rconsole *rc;
{
int i, s;
if (rc->rc_bits & FB_VISBELL) {
/* invert the screen twice */
i = ((rc->rc_bits & FB_INVERT) == 0);
rcons_invert(rc, i);
rcons_invert(rc, i ^ 1);
}
s = splhigh();
if (rc->rc_belldepth++) {
if (rc->rc_belldepth > 3)
rc->rc_belldepth = 3;
splx(s);
} else {
rc->rc_ringing = 1;
splx(s);
(*rc->rc_bell)(1);
/* XXX Chris doesn't like the following divide */
callout_reset(&rc->rc_belltmr_ch, hz / 10,
rcons_belltmr, rc);
}
}
/* Bell timer service routine */
static void
rcons_belltmr(p)
void *p;
{
struct rconsole *rc = p;
int s = splhigh(), i;
if (rc->rc_ringing) {
rc->rc_ringing = 0;
i = --rc->rc_belldepth;
splx(s);
(*rc->rc_bell)(0);
if (i != 0)
/* XXX Chris doesn't like the following divide */
callout_reset(&rc->rc_belltmr_ch, hz / 30,
rcons_belltmr, rc);
} else {
rc->rc_ringing = 1;
splx(s);
(*rc->rc_bell)(1);
callout_reset(&rc->rc_belltmr_ch, hz / 10,
rcons_belltmr, rc);
}
}
void
rcons_init(rc, clear)
struct rconsole *rc;
int clear;
{
mydevicep = rc;
callout_init(&rc->rc_belltmr_ch);
/* Initialize operations set, clear screen and turn cursor on */
rcons_init_ops(rc);
if (clear) {
rc->rc_col = 0;
rc->rc_row = 0;
rcons_clear2eop(rc);
}
rcons_cursor(rc);
}
void
rcons_ttyinit(tp)
struct tty *tp;
{
/* XXX this should go away */
struct rconsole *rc = mydevicep;
struct winsize *ws;
if (rc == NULL)
return;
/* Let the system know how big the console is */
ws = &tp->t_winsize;
ws->ws_row = rc->rc_maxrow;
ws->ws_col = rc->rc_maxcol;
ws->ws_xpixel = rc->rc_width;
ws->ws_ypixel = rc->rc_height;
/* Initialization done; hook us up */
tp->t_oproc = rcons_output;
/*tp->t_stop = (void (*)()) nullop;*/
}