/*
* RX interrupt handler
*/
static inline void rs_rx_interrupt(int irq, void *dev_id, struct pt_regs *regs)
{
unsigned long flags, status;
save_and_cli(flags);
rs_dprintk(TX3912_UART_DEBUG_INTERRUPTS, "rs_rx_interrupt...");
/* Get the interrupts */
status = inl(TX3912_INT2_STATUS);
/* Clear any interrupts we might be about to handle */
outl(TX3912_INT2_UARTA_RX_BITS, TX3912_INT2_CLEAR);
if(!rs_port || !rs_port->gs.tty) {
restore_flags(flags);
return;
}
/* RX Receiver Holding Register Overrun */
if(status & TX3912_INT2_UARTATXOVERRUNINT) {
rs_dprintk(TX3912_UART_DEBUG_INTERRUPTS, "overrun");
rs_port->icount.overrun++;
}
/* RX Frame Error */
if(status & TX3912_INT2_UARTAFRAMEERRINT) {
rs_dprintk(TX3912_UART_DEBUG_INTERRUPTS, "frame error");
rs_port->icount.frame++;
}
/* Break signal received */
if(status & TX3912_INT2_UARTABREAKINT) {
rs_dprintk(TX3912_UART_DEBUG_INTERRUPTS, "break");
rs_port->icount.brk++;
}
/* RX Parity Error */
if(status & TX3912_INT2_UARTAPARITYINT) {
rs_dprintk(TX3912_UART_DEBUG_INTERRUPTS, "parity error");
rs_port->icount.parity++;
}
/* Byte received */
if(status & TX3912_INT2_UARTARXINT) {
receive_char_pio(rs_port);
}
restore_flags(flags);
rs_dprintk(TX3912_UART_DEBUG_INTERRUPTS, "end.\n");
}
static inline void rs_rx_interrupt(int irq, void *dev_id,
struct pt_regs * regs, int intshift)
{
struct rs_port * port;
unsigned long int2status;
unsigned long flags;
unsigned long ints;
save_and_cli(flags);
port = (struct rs_port *)dev_id;
rs_dprintk (TX3912_UART_DEBUG_INTERRUPTS, "rs_interrupt (port %p, shift %d)...", port, intshift);
/* Get the interrrupts we have enabled */
int2status = IntStatus2 & IntEnable2;
/* Get interrupts in easy to use form */
ints = int2status >> intshift;
/* Clear any interrupts we might be about to handle */
IntClear2 = int2status & (
(INTTYPE(UART_RXOVERRUN_INT) |
INTTYPE(UART_FRAMEERR_INT) |
INTTYPE(UART_BREAK_INT) |
INTTYPE(UART_PARITYERR_INT) |
INTTYPE(UART_RX_INT)) << intshift);
if (!port || !port->gs.tty) {
restore_flags(flags);
return;
}
/* RX Receiver Holding Register Overrun */
if (ints & INTTYPE(UART_RXOVERRUN_INT)) {
rs_dprintk (TX3912_UART_DEBUG_INTERRUPTS, "overrun");
port->icount.overrun++;
}
/* RX Frame Error */
if (ints & INTTYPE(UART_FRAMEERR_INT)) {
rs_dprintk (TX3912_UART_DEBUG_INTERRUPTS, "frame error");
port->icount.frame++;
}
/* Break signal received */
if (ints & INTTYPE(UART_BREAK_INT)) {
rs_dprintk (TX3912_UART_DEBUG_INTERRUPTS, "break");
port->icount.brk++;
}
/* RX Parity Error */
if (ints & INTTYPE(UART_PARITYERR_INT)) {
rs_dprintk (TX3912_UART_DEBUG_INTERRUPTS, "parity error");
port->icount.parity++;
}
/* Receive byte (non-DMA) */
if (ints & INTTYPE(UART_RX_INT)) {
receive_char_pio(port);
}
restore_flags(flags);
rs_dprintk (TX3912_UART_DEBUG_INTERRUPTS, "end.\n");
}