1 /* 2 * irq.c 3 * 4 * (C) Copyright 2007, Greg Ungerer <gerg@snapgear.com> 5 * 6 * This file is subject to the terms and conditions of the GNU General Public 7 * License. See the file COPYING in the main directory of this archive 8 * for more details. 9 */ 10 11 #include <linux/types.h> 12 #include <linux/init.h> 13 #include <linux/kernel.h> 14 #include <linux/kernel_stat.h> 15 #include <linux/interrupt.h> 16 #include <linux/irq.h> 17 #include <linux/seq_file.h> 18 #include <asm/system.h> 19 #include <asm/traps.h> 20 21 asmlinkage void do_IRQ(int irq, struct pt_regs *regs) 22 { 23 struct pt_regs *oldregs = set_irq_regs(regs); 24 25 irq_enter(); 26 generic_handle_irq(irq); 27 irq_exit(); 28 29 set_irq_regs(oldregs); 30 } 31 32 int show_interrupts(struct seq_file *p, void *v) 33 { 34 struct irqaction *ap; 35 int irq = *((loff_t *) v); 36 37 if (irq == 0) 38 seq_puts(p, " CPU0\n"); 39 40 if (irq < NR_IRQS) { 41 struct irq_desc *desc = irq_to_desc(irq); 42 43 ap = desc->action; 44 if (ap) { 45 seq_printf(p, "%3d: ", irq); 46 seq_printf(p, "%10u ", kstat_irqs(irq)); 47 seq_printf(p, "%14s ", irq_desc_get_chip(desc)->name); 48 49 seq_printf(p, "%s", ap->name); 50 for (ap = ap->next; ap; ap = ap->next) 51 seq_printf(p, ", %s", ap->name); 52 seq_putc(p, '\n'); 53 } 54 } 55 56 return 0; 57 } 58 59