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#include <cpu.h>
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#include <cpu.h>
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#include <arch/types.h>
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#include <arch/types.h>
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#include <arch/asm.h>
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#include <arch/asm.h>
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#include <arch.h>
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#include <arch.h>
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#include <print.h>
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#include <print.h>
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#include <interrupt.h>
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/*
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/*
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 * This is the PIC driver.
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 * This is the PIC driver.
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 * Programmable Interrupt Controller for UP systems.
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 * Programmable Interrupt Controller for UP systems.
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 */
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 */
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static void pic_spurious(int n, void *stack);
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void i8259_init(void)
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void i8259_init(void)
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{
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{
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    /* ICW1: this is ICW1, ICW4 to follow */
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    /* ICW1: this is ICW1, ICW4 to follow */
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    outb(PIC_PIC0PORT1, PIC_ICW1 | PIC_NEEDICW4);
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    outb(PIC_PIC0PORT1, PIC_ICW1 | PIC_NEEDICW4);
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    outb(PIC_PIC1PORT2, 1);
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    outb(PIC_PIC1PORT2, 1);
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    /*
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    /*
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     * Register interrupt handler for the PIC spurious interrupt.
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     * Register interrupt handler for the PIC spurious interrupt.
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     */
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     */
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    trap_register(VECTOR_PIC_SPUR, pic_spurious);  
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    exc_register(VECTOR_PIC_SPUR, "pic_spurious", pic_spurious);   
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    /*
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    /*
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     * Set the enable/disable IRQs handlers.
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     * Set the enable/disable IRQs handlers.
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     * Set the End-of-Interrupt handler.
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     * Set the End-of-Interrupt handler.
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     */
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     */
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{
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{
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    outb(0x20,0x20);
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    outb(0x20,0x20);
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    outb(0xa0,0x20);
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    outb(0xa0,0x20);
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}
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}
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void pic_spurious(__u8 n, __native stack[])
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void pic_spurious(int n, void *stack)
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{
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{
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    printf("cpu%d: PIC spurious interrupt\n", CPU->id);
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    printf("cpu%d: PIC spurious interrupt\n", CPU->id);
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}
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}