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/*
* Atmel AT91RM9200 Interrupt handler
*
* Copyright (c) 2010 embedded brains GmbH.
*
* Copyright (c) 2004 by Jay Monkman <jtm@lopingdog.com>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#include <rtems/score/armv4.h>
#include <bsp.h>
#include <bsp/irq.h>
#include <bsp/irq-generic.h>
#include <at91rm9200.h>
void bsp_interrupt_dispatch(void)
{
rtems_vector_number vector = AIC_CTL_REG(AIC_IVR);
bsp_interrupt_handler_dispatch(vector);
AIC_CTL_REG(AIC_EOICR) = 0;
}
rtems_status_code bsp_interrupt_raise(rtems_vector_number vector)
{
bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
return RTEMS_UNSATISFIED;
}
rtems_status_code bsp_interrupt_clear(rtems_vector_number vector)
{
bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
return RTEMS_UNSATISFIED;
}
rtems_status_code bsp_interrupt_vector_is_enabled(
rtems_vector_number vector,
bool *enabled
)
{
bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
bsp_interrupt_assert(enabled != NULL);
*enabled = false;
return RTEMS_UNSATISFIED;
}
void bsp_interrupt_vector_enable(rtems_vector_number vector)
{
bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
AIC_CTL_REG(AIC_IECR) = 1 << vector;
}
void bsp_interrupt_vector_disable(rtems_vector_number vector)
{
bsp_interrupt_assert(bsp_interrupt_is_valid_vector(vector));
AIC_CTL_REG(AIC_IDCR) = 1 << vector;
}
rtems_status_code bsp_interrupt_facility_initialize(void)
{
unsigned long i = 0;
for (i = 0; i < 32; ++i) {
AIC_SVR_REG(i<<2) = i;
}
/* disable all interrupts */
AIC_CTL_REG(AIC_IDCR) = 0xffffffff;
_CPU_ISR_install_vector(ARM_EXCEPTION_IRQ, _ARMV4_Exception_interrupt, NULL);
return RTEMS_SUCCESSFUL;
}
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