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nds32: IRQ handling 

This patch includes irq related functions and irqchip_init().

Signed-off-by: Vincent Chen <vincentc@andestech.com>
Signed-off-by: Greentime Hu <greentime@andestech.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Greentime Hu 2017-10-24 15:50:45 +08:00
parent a15e9ffa87
commit f13c34b906
2 changed files with 45 additions and 0 deletions
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36
arch/nds32/include/asm/irqflags.h Normal file
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@ -0,0 +1,36 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2005-2017 Andes Technology Corporation
#include <asm/nds32.h>
#include <nds32_intrinsic.h>
#define arch_local_irq_disable() \
GIE_DISABLE();
#define arch_local_irq_enable() \
GIE_ENABLE();
static inline unsigned long arch_local_irq_save(void)
{
unsigned long flags;
flags = __nds32__mfsr(NDS32_SR_PSW) & PSW_mskGIE;
GIE_DISABLE();
return flags;
}
static inline unsigned long arch_local_save_flags(void)
{
unsigned long flags;
flags = __nds32__mfsr(NDS32_SR_PSW) & PSW_mskGIE;
return flags;
}
static inline void arch_local_irq_restore(unsigned long flags)
{
if(flags)
GIE_ENABLE();
}
static inline int arch_irqs_disabled_flags(unsigned long flags)
{
return !flags;
}

9
arch/nds32/kernel/irq.c Normal file
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// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2005-2017 Andes Technology Corporation
#include <linux/irqchip.h>
void __init init_IRQ(void)
{
irqchip_init();
}