1 /*
2 * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu>
3 * Copyright (C) 2007-2009 PetaLogix
4 * Copyright (C) 2006 Atmark Techno, Inc.
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/init.h>
12 #include <linux/ftrace.h>
13 #include <linux/kernel.h>
14 #include <linux/hardirq.h>
15 #include <linux/interrupt.h>
16 #include <linux/irqflags.h>
17 #include <linux/seq_file.h>
18 #include <linux/kernel_stat.h>
19 #include <linux/irq.h>
20 #include <linux/irqchip.h>
21 #include <linux/of_irq.h>
22
23 void __irq_entry do_IRQ(struct pt_regs *regs)
24 {
25 struct pt_regs *old_regs = set_irq_regs(regs);
26 trace_hardirqs_off();
27
28 irq_enter();
29 handle_arch_irq(regs);
30 irq_exit();
31 set_irq_regs(old_regs);
32 trace_hardirqs_on();
33 }
34
35 void __init init_IRQ(void)
36 {
37 /* process the entire interrupt tree in one go */
38 irqchip_init();
39 }
40
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