static int samsung_defterm_getc(u8 *ch)
{
if (!samsung_lowlevel_can_getc(samsung_defterm_base)) {
return VMM_EFAIL;
}
*ch = samsung_lowlevel_getc(samsung_defterm_base);
return VMM_OK;
}
u8 samsung_lowlevel_getc(virtual_addr_t base)
{
u8 data;
/* Wait until there is data in the FIFO */
while (!samsung_lowlevel_can_getc(base)) ;
data = vmm_in_8((void *)(base + S3C2410_URXH));
return data;
}
static vmm_irq_return_t samsung_irq_handler(int irq_no, void *dev)
{
u16 data;
struct samsung_port *port = (struct samsung_port *)dev;
/* Get masked interrupt status */
data = vmm_in_le16((void *)(port->base + S3C64XX_UINTP));
/* handle RX FIFO not empty */
if (data & S3C64XX_UINTM_RXD_MSK) {
/* Mask RX interrupts till RX FIFO is empty */
while (samsung_lowlevel_can_getc(port->base)) {
u8 ch = samsung_lowlevel_getc(port->base);
serial_rx(port->p, &ch, 1);
}
}
/* Clear all interrupts */
vmm_out_le16((void *)(port->base + S3C64XX_UINTP), data);
return VMM_IRQ_HANDLED;
}