45 строки
1.0 KiB
C
45 строки
1.0 KiB
C
#include <linux/interrupt.h>
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#include <asm/irq.h>
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#include <asm/traps.h>
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#include <asm/apollohw.h>
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void dn_process_int(unsigned int irq, struct pt_regs *fp)
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{
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__m68k_handle_int(irq, fp);
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*(volatile unsigned char *)(pica)=0x20;
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*(volatile unsigned char *)(picb)=0x20;
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}
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int apollo_irq_startup(unsigned int irq)
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{
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if (irq < 8)
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*(volatile unsigned char *)(pica+1) &= ~(1 << irq);
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else
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*(volatile unsigned char *)(picb+1) &= ~(1 << (irq - 8));
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return 0;
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}
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void apollo_irq_shutdown(unsigned int irq)
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{
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if (irq < 8)
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*(volatile unsigned char *)(pica+1) |= (1 << irq);
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else
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*(volatile unsigned char *)(picb+1) |= (1 << (irq - 8));
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}
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static struct irq_controller apollo_irq_controller = {
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.name = "apollo",
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.lock = __SPIN_LOCK_UNLOCKED(apollo_irq_controller.lock),
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.startup = apollo_irq_startup,
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.shutdown = apollo_irq_shutdown,
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};
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void __init dn_init_IRQ(void)
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{
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m68k_setup_user_interrupt(VEC_USER + 96, 16, dn_process_int);
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m68k_setup_irq_controller(&apollo_irq_controller, IRQ_APOLLO, 16);
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}
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