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Add skeleton code to defer rcons console output to soft-interrupt time. 

ifdef'ed out for now.
This commit is contained in:
jonathan 1998-11-16 00:10:39 +00:00
parent 0c20c72cf9
commit a3a77d9561
1 changed files with 64 additions and 1 deletions
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65
sys/arch/pmax/dev/rcons.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: rcons.c,v 1.16 1998/03/24 09:51:23 jonathan Exp $ */
/* $NetBSD: rcons.c,v 1.17 1998/11/16 00:10:39 jonathan Exp $ */
/*
* Copyright (c) 1995
@ -399,6 +399,69 @@ rconsmmap (dev, off, prot)
}
#ifdef notyet
void
rconsstart(tp)
struct tty *tp;
{
struct clist *cl;
register int s;
s = spltty();
if (tp->t_state & (TS_BUSY|TS_TTSTOP|TS_TIMEOUT))
goto out;
cl = &tp->t_outq;
if (cl->c_cc) {
tp->t_state |= TS_BUSY;
if (0 /* hardware prio */) {
/* called at level zero - update screen now. */
(void) splsoftclock();
/*kd_putfb(tp);*/
(void) spltty();
tp->t_state &= ~TS_BUSY;
} else {
/* called at interrupt level - do it later */
timeout(rcons_later, (void*)tp, 0);
}
}
if (cl->c_cc <= tp->t_lowat) {
if (tp->t_state & TS_ASLEEP) {
tp->t_state &= ~TS_ASLEEP;
wakeup((caddr_t)cl);
}
selwakeup(&tp->t_wsel);
}
out:
splx(s);
}
/*
* Timeout function to do delayed writes to the screen.
* Called at splsoftclock when requested by rconssstart.
*/
static void
rcons_later(tpaddr)
void *tpaddr;
{
struct tty *tp = tpaddr;
register int s;
#if 0
/*XXX*/printf("rcons_later\n");
#endif
s = spltty();
(*(fbconstty->t_oproc)) (tp); /* XXX */
tp->t_state &= ~TS_BUSY;
(*linesw[tp->t_line].l_start)(tp);
splx(s);
}
#endif /* notyet */
/*
* Our "interrupt" routine for input.
* Called by the keyboard device driver at spltty when it has