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/*
* TX4925 Interrupt Vectoring
*
* vectorisrs.c,v 1.6 2004/06/23 18:16:36
*/
#include <rtems.h>
#include <stdlib.h>
#include <libcpu/tx4925.h>
void mips_default_isr( int vector );
#define CALL_ISR(_vector,_frame) \
do { \
if ( _ISR_Vector_table[_vector] ) \
(_ISR_Vector_table[_vector])(_vector,_frame); \
else \
mips_default_isr(_vector); \
} while (0)
#include <rtems/bspIo.h> /* for printk */
void mips_vector_isr_handlers( CPU_Interrupt_frame *frame )
{
unsigned int sr;
unsigned int cause;
unsigned int pending;
mips_get_sr( sr );
mips_get_cause( cause );
pending = (cause & sr & 0x700) >> CAUSE_IPSHIFT;
if ( pending & 0x4 ) { /* (IP[2] == 1) ==> IP[3-7] are valid */
unsigned int v = (cause >> (CAUSE_IPSHIFT + 3)) & 0x1f;
CALL_ISR( MIPS_INTERRUPT_BASE + v, frame );
}
if ( pending & 0x01 ) /* IP[0] */
CALL_ISR( TX4925_IRQ_SOFTWARE_1, frame );
if ( pending & 0x02 ) /* IP[1] */
CALL_ISR( TX4925_IRQ_SOFTWARE_2, frame );
}
void mips_default_isr( int vector )
{
unsigned int sr;
unsigned int cause;
mips_get_sr( sr );
mips_get_cause( cause );
printk( "Unhandled isr exception: vector 0x%02x, cause 0x%08X, sr 0x%08X\n",
vector, cause, sr );
while(1); /* Lock it up */
rtems_fatal_error_occurred(1);
}
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