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816ebaa8 JB |
1 | /* |
2 | * OpenRISC irq.c | |
3 | * | |
4 | * Linux architectural port borrowing liberally from similar works of | |
5 | * others. All original copyrights apply as per the original source | |
6 | * declaration. | |
7 | * | |
8 | * Modifications for the OpenRISC architecture: | |
9 | * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or | |
12 | * modify it under the terms of the GNU General Public License | |
13 | * as published by the Free Software Foundation; either version | |
14 | * 2 of the License, or (at your option) any later version. | |
15 | */ | |
16 | ||
816ebaa8 JB |
17 | #include <linux/interrupt.h> |
18 | #include <linux/init.h> | |
816ebaa8 JB |
19 | #include <linux/ftrace.h> |
20 | #include <linux/irq.h> | |
4db8e6d2 | 21 | #include <linux/irqchip.h> |
abdf8b5e | 22 | #include <linux/export.h> |
816ebaa8 JB |
23 | #include <linux/irqflags.h> |
24 | ||
25 | /* read interrupt enabled status */ | |
26 | unsigned long arch_local_save_flags(void) | |
27 | { | |
28 | return mfspr(SPR_SR) & (SPR_SR_IEE|SPR_SR_TEE); | |
29 | } | |
30 | EXPORT_SYMBOL(arch_local_save_flags); | |
31 | ||
32 | /* set interrupt enabled status */ | |
33 | void arch_local_irq_restore(unsigned long flags) | |
34 | { | |
35 | mtspr(SPR_SR, ((mfspr(SPR_SR) & ~(SPR_SR_IEE|SPR_SR_TEE)) | flags)); | |
36 | } | |
37 | EXPORT_SYMBOL(arch_local_irq_restore); | |
38 | ||
4db8e6d2 | 39 | void __init init_IRQ(void) |
816ebaa8 | 40 | { |
4db8e6d2 | 41 | irqchip_init(); |
b4c4c6ee | 42 | } |
816ebaa8 | 43 | |
4db8e6d2 | 44 | static void (*handle_arch_irq)(struct pt_regs *); |
816ebaa8 | 45 | |
4db8e6d2 | 46 | void __init set_handle_irq(void (*handle_irq)(struct pt_regs *)) |
816ebaa8 | 47 | { |
4db8e6d2 | 48 | handle_arch_irq = handle_irq; |
816ebaa8 JB |
49 | } |
50 | ||
4db8e6d2 SK |
51 | void __irq_entry do_IRQ(struct pt_regs *regs) |
52 | { | |
53 | handle_arch_irq(regs); | |
54 | } |