752bcb4d02
This patch implements interrupts and gpio handling. UniCore32 has 9 gpio interrupt sources. And gpio device operations are also here. Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
53 lines
1 KiB
C
53 lines
1 KiB
C
/*
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* linux/arch/unicore32/include/asm/irqflags.h
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*
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* Code specific to PKUnity SoC and UniCore ISA
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*
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* Copyright (C) 2001-2010 GUAN Xue-tao
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __UNICORE_IRQFLAGS_H__
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#define __UNICORE_IRQFLAGS_H__
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#ifdef __KERNEL__
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#include <asm/ptrace.h>
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#define ARCH_IRQ_DISABLED (PRIV_MODE | PSR_I_BIT)
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#define ARCH_IRQ_ENABLED (PRIV_MODE)
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/*
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* Save the current interrupt enable state.
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*/
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static inline unsigned long arch_local_save_flags(void)
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{
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unsigned long temp;
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asm volatile("mov %0, asr" : "=r" (temp) : : "memory", "cc");
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return temp & PSR_c;
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}
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/*
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* restore saved IRQ state
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*/
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static inline void arch_local_irq_restore(unsigned long flags)
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{
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unsigned long temp;
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asm volatile(
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"mov %0, asr\n"
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"mov.a asr, %1\n"
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"mov.f asr, %0"
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: "=&r" (temp)
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: "r" (flags)
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: "memory", "cc");
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}
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#include <asm-generic/irqflags.h>
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#endif
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#endif
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