/* Is the SCI ready, ie is there a char waiting? */
static int kgdb_is_char_ready(struct sci_port *port)
{
unsigned short status = sci_in(port, SCxSR);
if (status & (SCxSR_ERRORS(port) | SCxSR_BRK(port)))
kgdb_handle_error(port);
return (status & SCxSR_RDxF(port));
}
static int get_char(struct sci_port *port)
{
unsigned long flags;
unsigned short status;
int c;
save_and_cli(flags);
do {
status = sci_in(port, SCxSR);
if (status & SCxSR_ERRORS(port)) {
handle_error(port);
continue;
}
} while (!(status & SCxSR_RDxF(port)));
c = sci_in(port, SCxRDR);
sci_in(port, SCxSR); /* Dummy read */
sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
restore_flags(flags);
return c;
}
static int get_char(struct uart_port *port)
{
unsigned long flags;
unsigned short status;
int c;
spin_lock_irqsave(&port->lock, flags);
do {
status = sci_in(port, SCxSR);
if (status & SCxSR_ERRORS(port)) {
handle_error(port);
continue;
}
} while (!(status & SCxSR_RDxF(port)));
c = sci_in(port, SCxRDR);
sci_in(port, SCxSR); /* Dummy read */
sci_out(port, SCxSR, SCxSR_RDxF_CLEAR(port));
spin_unlock_irqrestore(&port->lock, flags);
return c;
}
