static void
pconsstart(struct tty *tp)
{
struct clist *cl;
int s, len;
uint8_t buf[OFBURSTLEN];
s = spltty();
if (tp->t_state & (TS_TIMEOUT | TS_BUSY | TS_TTSTOP)) {
splx(s);
return;
}
tp->t_state |= TS_BUSY;
splx(s);
cl = &tp->t_outq;
len = q_to_b(cl, buf, OFBURSTLEN);
prom_putstr(buf, len);
s = spltty();
tp->t_state &= ~TS_BUSY;
if (ttypull(tp)) {
tp->t_state |= TS_TIMEOUT;
callout_schedule(&tp->t_rstrt_ch, 1);
}
splx(s);
}
void prom_printk(const char *fmt, ...) {
va_list args;
va_start(args, fmt);
vsnprintf(pbuffer, 4096, fmt, args);
va_end(args);
prom_putstr(pbuffer);
}
/*
* promcnputc:
*
* Remap char before passing off to prom.
*
* Prom only takes 32 bit addresses. Copy char somewhere prom can
* find it. This routine will stop working after pmap_rid_of_console
* is called in alpha_init. This is due to the hard coded address
* of the console area.
*/
void
promcnputc(dev_t dev, int c)
{
prom_return_t ret;
unsigned char *to = (unsigned char *)0x20000000;
prom_enter();
*to = c;
do {
ret.bits = prom_putstr(alpha_console, to, 1);
} while ((ret.u.retval & 1) == 0);
prom_leave();
}
/*
* Put text on the screen using the PROM monitor.
* This can take a while, so to avoid missing
* interrupts, this is called at splsoftclock.
*/
static void
kd_putfb(struct tty *tp)
{
char buf[PUT_WSIZE];
struct clist *cl = &tp->t_outq;
char *p, *end;
int len;
while ((len = q_to_b(cl, buf, PUT_WSIZE-1)) > 0) {
/* PROM will barf if high bits are set. */
p = buf;
end = buf + len;
while (p < end)
*p++ &= 0x7f;
/* Now let the PROM print it. */
prom_putstr(buf, len);
}
}
