Commit e38a5272 authored by Guo Ren's avatar Guo Ren
Browse files

csky: IRQ handling 



This patch adds IRQ handling files.

Signed-off-by: default avatarGuo Ren <ren_guo@c-sky.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: default avatarArnd Bergmann <arnd@arndb.de>
parent dd3ef10e

arch/csky/include/asm/irqflags.h

0 → 100644
+49 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */



#ifndef __ASM_CSKY_IRQFLAGS_H

#define __ASM_CSKY_IRQFLAGS_H

#include <abi/reg_ops.h>



static inline unsigned long arch_local_irq_save(void)

{

	unsigned long flags;



	flags = mfcr("psr");

	asm volatile("psrclr ie\n":::"memory");

	return flags;

}

#define arch_local_irq_save arch_local_irq_save



static inline void arch_local_irq_enable(void)

{

	asm volatile("psrset ee, ie\n":::"memory");

}

#define arch_local_irq_enable arch_local_irq_enable



static inline void arch_local_irq_disable(void)

{

	asm volatile("psrclr ie\n":::"memory");

}

#define arch_local_irq_disable arch_local_irq_disable



static inline unsigned long arch_local_save_flags(void)

{

	return mfcr("psr");

}

#define arch_local_save_flags arch_local_save_flags



static inline void arch_local_irq_restore(unsigned long flags)

{

	mtcr("psr", flags);

}

#define arch_local_irq_restore arch_local_irq_restore



static inline int arch_irqs_disabled_flags(unsigned long flags)

{

	return !(flags & (1<<6));

}

#define arch_irqs_disabled_flags arch_irqs_disabled_flags



#include <asm-generic/irqflags.h>



#endif /* __ASM_CSKY_IRQFLAGS_H */

arch/csky/kernel/irq.c

0 → 100644
+22 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0

// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd.



#include <linux/init.h>

#include <linux/interrupt.h>

#include <linux/irq.h>

#include <linux/irqchip.h>

#include <asm/traps.h>

#include <asm/smp.h>



void __init init_IRQ(void)

{

	irqchip_init();

#ifdef CONFIG_SMP

	setup_smp_ipi();

#endif

}



asmlinkage void __irq_entry csky_do_IRQ(struct pt_regs *regs)

{

	handle_arch_irq(regs);

}