/* This file is part of test microkernel for OpenRISC 1000. */
|
/* This file is part of test microkernel for OpenRISC 1000. */
|
/* (C) 2001 Simon Srot, srot@opencores.org */
|
/* (C) 2001 Simon Srot, srot@opencores.org */
|
|
|
#include "common.h"
|
#include "common.h"
|
#include "support.h"
|
#include "support.h"
|
#include "spr_defs.h"
|
#include "spr_defs.h"
|
#include "int.h"
|
#include "int.h"
|
|
|
#ifdef OR1K
|
#ifdef OR1K
|
|
|
/* Interrupt handlers table */
|
/* Interrupt handlers table */
|
struct ihnd int_handlers[MAX_INT_HANDLERS];
|
struct ihnd int_handlers[MAX_INT_HANDLERS];
|
|
|
/* Initialize routine */
|
/* Initialize routine */
|
int int_init()
|
int int_init()
|
{
|
{
|
int i;
|
int i;
|
|
|
for(i = 0; i < MAX_INT_HANDLERS; i++) {
|
for(i = 0; i < MAX_INT_HANDLERS; i++) {
|
int_handlers[i].handler = 0;
|
int_handlers[i].handler = 0;
|
}
|
}
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Add interrupt handler */
|
/* Add interrupt handler */
|
int int_add(unsigned long vect, void (* handler)(void))
|
int int_add(unsigned long vect, void (* handler)(void))
|
{
|
{
|
if(vect >= MAX_INT_HANDLERS) return -1;
|
if(vect >= MAX_INT_HANDLERS) return -1;
|
|
|
int_handlers[vect].handler = handler;
|
int_handlers[vect].handler = handler;
|
debug ("int_add %i: %08lx\n", vect, int_handlers[vect].handler);
|
debug ("int_add %i: %08lx\n", vect, int_handlers[vect].handler);
|
|
|
mtspr(SPR_PICMR, mfspr(SPR_PICMR) | (0x00000001L << vect));
|
mtspr(SPR_PICMR, mfspr(SPR_PICMR) | (0x00000001L << vect));
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Disable interrupt */
|
/* Disable interrupt */
|
int int_disable(unsigned long vect)
|
int int_disable(unsigned long vect)
|
{
|
{
|
if(vect >= MAX_INT_HANDLERS) return -1;
|
if(vect >= MAX_INT_HANDLERS) return -1;
|
|
|
mtspr(SPR_PICMR, mfspr(SPR_PICMR) & ~(0x00000001L << vect));
|
mtspr(SPR_PICMR, mfspr(SPR_PICMR) & ~(0x00000001L << vect));
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Enable interrupt */
|
/* Enable interrupt */
|
int int_enable(unsigned long vect)
|
int int_enable(unsigned long vect)
|
{
|
{
|
if(vect >= MAX_INT_HANDLERS) return -1;
|
if(vect >= MAX_INT_HANDLERS) return -1;
|
|
|
mtspr(SPR_PICMR, mfspr(SPR_PICMR) | (0x00000001L << vect));
|
mtspr(SPR_PICMR, mfspr(SPR_PICMR) | (0x00000001L << vect));
|
|
|
return 0;
|
return 0;
|
}
|
}
|
|
|
/* Main interrupt handler */
|
/* Main interrupt handler */
|
void int_main(void)
|
void int_main(void)
|
{
|
{
|
unsigned long picsr = mfspr(SPR_PICSR);
|
unsigned long picsr = mfspr(SPR_PICSR);
|
unsigned long i = 0;
|
unsigned long i = 0;
|
|
|
mtspr(SPR_PICSR, 0);
|
mtspr(SPR_PICSR, 0);
|
// printf ("int :%08lx\n", picsr);
|
// printf ("int :%08lx\n", picsr);
|
|
|
while(i < 32) {
|
while(i < 32) {
|
if((picsr & (0x01L << i)) && (int_handlers[i].handler != 0)) {
|
if((picsr & (0x01L << i)) && (int_handlers[i].handler != 0)) {
|
(*int_handlers[i].handler)();
|
(*int_handlers[i].handler)();
|
mtspr(SPR_PICSR, mfspr(SPR_PICSR) & ~(0x00000001L << i));
|
mtspr(SPR_PICSR, mfspr(SPR_PICSR) & ~(0x00000001L << i));
|
}
|
}
|
i++;
|
i++;
|
}
|
}
|
}
|
}
|
|
|
#endif
|
#endif
|
|
|
