static irqreturn_t sbd_interrupt(int irq, void *dev_id)
{
struct sbd_port *sport = dev_id;
struct uart_port *uport = &sport->port;
irqreturn_t status = IRQ_NONE;
unsigned int intstat;
int count;
for (count = 16; count; count--) {
intstat = read_sbdshr(sport,
R_DUART_ISRREG((uport->line) % 2));
intstat &= read_sbdshr(sport,
R_DUART_IMRREG((uport->line) % 2));
intstat &= M_DUART_ISR_ALL;
if (!intstat)
break;
if (intstat & M_DUART_ISR_RX)
sbd_receive_chars(sport);
if (intstat & M_DUART_ISR_IN)
sbd_status_handle(sport);
if (intstat & M_DUART_ISR_TX)
sbd_transmit_chars(sport);
status = IRQ_HANDLED;
}
return status;
}
void bcm1250DuartDevInit
(
BCM1250_DUART_CHAN * pChan
)
{
int oldlevel;
pChan->intEnable = FALSE;
if((pChan->channel != BCM1250_DUART_CHANNEL_A ) &&
(pChan->channel != BCM1250_DUART_CHANNEL_B))
return;
pChan->duartBase = (void *)PHYS_TO_K1(A_DUART);
pChan->chanBase = pChan->duartBase + R_DUART_CHANREG(pChan->channel, 0);
pChan->chanIMR = (unsigned long long *)
(pChan->duartBase + R_DUART_IMRREG(pChan->channel));
pChan->chanISR = (unsigned long long *)
(pChan->duartBase + R_DUART_ISRREG(pChan->channel));
pChan->intSource = (pChan->channel == BCM1250_DUART_CHANNEL_A) ?
K_INT_UART_0 : K_INT_UART_1;
/* clear delta interrupts */
bcm1250DuartAcrSet (pChan, 0);
/* don't relay TX clock on output in */
bcm1250DuartTxCoutRelay (pChan, FALSE );
/* assert RTS (request to send ) */
bcm1250DuartRts (pChan, TRUE);
/* init callbacks and set default options */
bcm1250DuartInitStruct (pChan);
oldlevel = intLock ();
/* Clear the interrupt mask register */
MIPS3_SD(pChan->chanIMR, 0);
bcm1250DuartInitChannel (pChan);
intUnlock (oldlevel);
}
