/*
* Alarm timer expired:
* Send an alarm exception to the target task.
*/
static void
alarm_expire(void *arg)
{
task_t task = (task_t)arg;
exception_post(task, SIGALRM);
}
/*
* PM event notification.
*/
void
pm_notify(int event)
{
struct pm_softc *sc = pm_softc;
int s;
if (event == PME_USER_ACTIVITY) {
/*
* Reload suspend timer for user activity.
*/
s = splhigh();
sc->idlecnt = 0;
splx(s);
if (!sc->lcd_on)
pm_lcd_on();
return;
}
DPRINTF(("pm: notify %d\n", event));
if (sc->powtask != TASK_NULL) {
/*
* Power server exists.
*/
switch (event) {
case PME_PWRBTN_PRESS:
case PME_SLPBTN_PRESS:
case PME_LOW_BATTERY:
case PME_LCD_CLOSE:
/*
* Post an exception to the power server.
* Then, the power server will query PM event.
*/
sc->lastevt = event;
DPRINTF(("pm: post %d\n", event));
exception_post(sc->powtask, SIGPWR);
break;
case PME_LCD_OPEN:
sc->lastevt = PME_NO_EVENT;
pm_lcd_on();
break;
}
} else {
/*
* No power server.
* Map power event to default action.
*/
switch (event) {
case PME_PWRBTN_PRESS:
pm_poweroff();
break;
case PME_SLPBTN_PRESS:
case PME_LOW_BATTERY:
pm_suspend();
break;
case PME_LCD_OPEN:
pm_lcd_on();
break;
case PME_LCD_CLOSE:
pm_lcd_off();
break;
}
}
}
/*
* Process input of a single character received on a tty.
* echo if required.
* This may be called with interrupt level.
*/
void
tty_input(int c, struct tty *tp)
{
unsigned char *cc;
tcflag_t iflag, lflag;
int sig = -1;
#ifdef CONFIG_CPUFREQ
/* Reload power management timer */
pm_active();
#endif
lflag = tp->t_lflag;
iflag = tp->t_iflag;
cc = tp->t_cc;
/* IGNCR, ICRNL, INLCR */
if (c == '\r') {
if (iflag & IGNCR)
goto endcase;
else if (iflag & ICRNL)
c = '\n';
} else if (c == '\n' && (iflag & INLCR))
c = '\r';
if (iflag & IXON) {
/* stop (^S) */
if (c == cc[VSTOP]) {
if (!(tp->t_state & TS_TTSTOP)) {
tp->t_state |= TS_TTSTOP;
return;
}
if (c != cc[VSTART])
return;
/* if VSTART == VSTOP then toggle */
goto endcase;
}
/* start (^Q) */
if (c == cc[VSTART])
goto restartoutput;
}
if (lflag & ICANON) {
/* erase (^H / ^?) or backspace */
if (c == cc[VERASE] || c == '\b') {
if (!ttyq_empty(&tp->t_rawq)) {
ttyq_unputc(&tp->t_rawq);
tty_rubout(tp);
}
goto endcase;
}
/* kill (^U) */
if (c == cc[VKILL]) {
while (!ttyq_empty(&tp->t_rawq)) {
ttyq_unputc(&tp->t_rawq);
tty_rubout(tp);
}
goto endcase;
}
}
if (lflag & ISIG) {
/* quit (^C) */
if (c == cc[VINTR] || c == cc[VQUIT]) {
if (!(lflag & NOFLSH))
tty_flush(tp, FREAD | FWRITE);
tty_echo(c, tp);
sig = (c == cc[VINTR]) ? SIGINT : SIGQUIT;
goto endcase;
}
/* suspend (^Z) */
if (c == cc[VSUSP]) {
if (!(lflag & NOFLSH))
tty_flush(tp, FREAD | FWRITE);
tty_echo(c, tp);
sig = SIGTSTP;
goto endcase;
}
}
/*
* Check for input buffer overflow
*/
if (ttyq_full(&tp->t_rawq)) {
tty_flush(tp, FREAD | FWRITE);
goto endcase;
}
ttyq_putc(c, &tp->t_rawq);
if (lflag & ICANON) {
if (c == '\n' || c == cc[VEOF] || c == cc[VEOL]) {
tty_catq(&tp->t_rawq, &tp->t_canq);
sched_wakeup(&tp->t_input);
}
} else
sched_wakeup(&tp->t_input);
if (lflag & ECHO)
tty_echo(c, tp);
endcase:
/*
* IXANY means allow any character to restart output.
*/
if ((tp->t_state & TS_TTSTOP) && (iflag & IXANY) == 0 &&
cc[VSTART] != cc[VSTOP])
return;
restartoutput:
tp->t_state &= ~TS_TTSTOP;
if (sig != -1) {
if (sig_task)
exception_post(sig_task, sig);
}
tty_start(tp);
}