rtems_isr_entry set_vector( /* returns old vector */
rtems_isr_entry handler, /* isr routine */
rtems_vector_number vector, /* vector number */
int type /* RTEMS or RAW intr */
)
{
rtems_isr_entry previous_isr;
uint32_t real_trap;
uint32_t source;
if ( type == SET_VECTOR_INT )
rtems_interrupt_catch( handler, vector, &previous_isr );
else
_CPU_ISR_install_raw_handler( vector, handler, (void *)&previous_isr );
real_trap = SPARC_REAL_TRAP_NUMBER( vector );
if ( ERC32_Is_MEC_Trap( real_trap ) ) {
source = ERC32_TRAP_SOURCE( real_trap );
ERC32_Clear_interrupt( source );
ERC32_Unmask_interrupt( source );
}
return previous_isr;
}
static void erc32_console_isr_b(
rtems_vector_number vector
)
{
console_data *cd = &Console_Port_Data[1];
/* check for error */
if (ERC32_MEC.UART_Status & ERC32_MEC_UART_STATUS_ERRB) {
ERC32_MEC.UART_Status = ERC32_MEC_UART_STATUS_CLRB;
ERC32_MEC.Control = ERC32_MEC.Control;
}
do {
int chars_to_dequeue = (int)cd->pDeviceContext;
int rv = 0;
int i = 0;
char buf[CONSOLE_BUF_SIZE];
/* enqueue received chars */
while (i < CONSOLE_BUF_SIZE) {
if (!(ERC32_MEC.UART_Status & ERC32_MEC_UART_STATUS_DRB))
break;
buf[i] = ERC32_MEC.UART_Channel_B;
++i;
}
if ( i )
rtems_termios_enqueue_raw_characters(cd->termios_data, buf, i);
/* dequeue transmitted chars */
if (ERC32_MEC.UART_Status & ERC32_MEC_UART_STATUS_THEB) {
rv = rtems_termios_dequeue_characters(
cd->termios_data, chars_to_dequeue);
if ( !rv ) {
cd->pDeviceContext = 0;
cd->bActive = false;
}
ERC32_Clear_interrupt (ERC32_INTERRUPT_UART_B_RX_TX);
}
} while (ERC32_Is_interrupt_pending (ERC32_INTERRUPT_UART_B_RX_TX));
}
