mirror of https://gitee.com/openkylin/linux.git
83 lines
1.6 KiB
C
83 lines
1.6 KiB
C
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/*
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* irq.c
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*
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* (C) Copyright 2007, Greg Ungerer <gerg@snapgear.com>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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*/
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#include <linux/types.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/kernel_stat.h>
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <linux/seq_file.h>
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#include <asm/system.h>
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#include <asm/traps.h>
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asmlinkage void do_IRQ(int irq, struct pt_regs *regs)
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{
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struct pt_regs *oldregs = set_irq_regs(regs);
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irq_enter();
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__do_IRQ(irq);
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irq_exit();
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set_irq_regs(oldregs);
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}
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void ack_bad_irq(unsigned int irq)
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{
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printk(KERN_ERR "IRQ: unexpected irq=%d\n", irq);
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}
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static struct irq_chip m_irq_chip = {
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.name = "M68K-INTC",
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.enable = enable_vector,
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.disable = disable_vector,
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.ack = ack_vector,
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};
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void __init init_IRQ(void)
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{
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int irq;
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init_vectors();
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for (irq = 0; (irq < NR_IRQS); irq++) {
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irq_desc[irq].status = IRQ_DISABLED;
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irq_desc[irq].action = NULL;
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irq_desc[irq].depth = 1;
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irq_desc[irq].chip = &m_irq_chip;
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}
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}
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int show_interrupts(struct seq_file *p, void *v)
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{
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struct irqaction *ap;
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int irq = *((loff_t *) v);
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if (irq == 0)
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seq_puts(p, " CPU0\n");
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if (irq < NR_IRQS) {
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ap = irq_desc[irq].action;
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if (ap) {
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seq_printf(p, "%3d: ", irq);
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seq_printf(p, "%10u ", kstat_irqs(irq));
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seq_printf(p, "%14s ", irq_desc[irq].chip->name);
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seq_printf(p, "%s", ap->name);
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for (ap = ap->next; ap; ap = ap->next)
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seq_printf(p, ", %s", ap->name);
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seq_putc(p, '\n');
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}
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}
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return 0;
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}
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