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/*
* OpenRISC irq.c
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* Modifications for the OpenRISC architecture:
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/ftrace.h>
#include <linux/irq.h>
#include <linux/irqchip.h>
#include <linux/export.h>
#include <linux/irqflags.h>
/* read interrupt enabled status */
unsigned long arch_local_save_flags(void)
{
return mfspr(SPR_SR) & (SPR_SR_IEE|SPR_SR_TEE);
}
EXPORT_SYMBOL(arch_local_save_flags);
/* set interrupt enabled status */
void arch_local_irq_restore(unsigned long flags)
{
mtspr(SPR_SR, ((mfspr(SPR_SR) & ~(SPR_SR_IEE|SPR_SR_TEE)) | flags));
}
EXPORT_SYMBOL(arch_local_irq_restore);
void __init init_IRQ(void)
{
irqchip_init();
}
static void (*handle_arch_irq)(struct pt_regs *);
void __init set_handle_irq(void (*handle_irq)(struct pt_regs *))
{
handle_arch_irq = handle_irq;
}
void handle_IRQ(unsigned int irq, struct pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs(regs);
irq_enter();
generic_handle_irq(irq);
irq_exit();
set_irq_regs(old_regs);
}
void __irq_entry do_IRQ(struct pt_regs *regs)
{
handle_arch_irq(regs);
}
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