1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * OpenRISC irq.c
4  *
5  * Linux architectural port borrowing liberally from similar works of
6  * others.  All original copyrights apply as per the original source
7  * declaration.
8  *
9  * Modifications for the OpenRISC architecture:
10  * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
11  */
12 
13 #include <linux/interrupt.h>
14 #include <linux/init.h>
15 #include <linux/ftrace.h>
16 #include <linux/irq.h>
17 #include <linux/irqchip.h>
18 #include <linux/export.h>
19 #include <linux/irqflags.h>
20 
21 /* read interrupt enabled status */
arch_local_save_flags(void)22 unsigned long arch_local_save_flags(void)
23 {
24 	return mfspr(SPR_SR) & (SPR_SR_IEE|SPR_SR_TEE);
25 }
26 EXPORT_SYMBOL(arch_local_save_flags);
27 
28 /* set interrupt enabled status */
arch_local_irq_restore(unsigned long flags)29 void arch_local_irq_restore(unsigned long flags)
30 {
31 	mtspr(SPR_SR, ((mfspr(SPR_SR) & ~(SPR_SR_IEE|SPR_SR_TEE)) | flags));
32 }
33 EXPORT_SYMBOL(arch_local_irq_restore);
34 
init_IRQ(void)35 void __init init_IRQ(void)
36 {
37 	irqchip_init();
38 }
39 
do_IRQ(struct pt_regs * regs)40 void __irq_entry do_IRQ(struct pt_regs *regs)
41 {
42 	handle_arch_irq(regs);
43 }
44