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#include <linux/interrupt.h>
#ifdef CONFIG_GENERIC_HARDIRQS
#include <linux/irq.h>
#else
#include <asm/irq.h>
#endif
#include <asm/traps.h>
#include <asm/apollohw.h>
#ifndef CONFIG_GENERIC_HARDIRQS
void dn_process_int(unsigned int irq, struct pt_regs *fp)
{
do_IRQ(irq, fp);
*(volatile unsigned char *)(pica)=0x20;
*(volatile unsigned char *)(picb)=0x20;
}
#endif
unsigned int apollo_irq_startup(struct irq_data *data)
{
unsigned int irq = data->irq;
if (irq < 8)
*(volatile unsigned char *)(pica+1) &= ~(1 << irq);
else
*(volatile unsigned char *)(picb+1) &= ~(1 << (irq - 8));
return 0;
}
void apollo_irq_shutdown(struct irq_data *data)
{
unsigned int irq = data->irq;
if (irq < 8)
*(volatile unsigned char *)(pica+1) |= (1 << irq);
else
*(volatile unsigned char *)(picb+1) |= (1 << (irq - 8));
}
#ifdef CONFIG_GENERIC_HARDIRQS
void apollo_irq_eoi(struct irq_data *data)
{
*(volatile unsigned char *)(pica) = 0x20;
*(volatile unsigned char *)(picb) = 0x20;
}
#endif
static struct irq_chip apollo_irq_chip = {
.name = "apollo",
.irq_startup = apollo_irq_startup,
.irq_shutdown = apollo_irq_shutdown,
#ifdef CONFIG_GENERIC_HARDIRQS
.irq_eoi = apollo_irq_eoi,
#endif
};
void __init dn_init_IRQ(void)
{
#ifdef CONFIG_GENERIC_HARDIRQS
m68k_setup_user_interrupt(VEC_USER + 96, 16, NULL);
#else
m68k_setup_user_interrupt(VEC_USER + 96, 16, dn_process_int);
#endif
m68k_setup_irq_controller(&apollo_irq_chip, handle_fasteoi_irq,
IRQ_APOLLO, 16);
}
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