[mirror_ubuntu-focal-kernel.git] / arch / riscv / include / asm / irqflags.h

/*
 * Copyright (C) 2012 Regents of the University of California
 *
 *   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, version 2.
 *
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 */


#ifndef _ASM_RISCV_IRQFLAGS_H
#define _ASM_RISCV_IRQFLAGS_H

#include <asm/processor.h>
#include <asm/csr.h>

/* read interrupt enabled status */
static inline unsigned long arch_local_save_flags(void)
{
	return csr_read(sstatus);
}

/* unconditionally enable interrupts */
static inline void arch_local_irq_enable(void)
{
	csr_set(sstatus, SR_SIE);
}

/* unconditionally disable interrupts */
static inline void arch_local_irq_disable(void)
{
	csr_clear(sstatus, SR_SIE);
}

/* get status and disable interrupts */
static inline unsigned long arch_local_irq_save(void)
{
	return csr_read_clear(sstatus, SR_SIE);
}

/* test flags */
static inline int arch_irqs_disabled_flags(unsigned long flags)
{
	return !(flags & SR_SIE);
}

/* test hardware interrupt enable bit */
static inline int arch_irqs_disabled(void)
{
	return arch_irqs_disabled_flags(arch_local_save_flags());
}

/* set interrupt enabled status */
static inline void arch_local_irq_restore(unsigned long flags)
{
	csr_set(sstatus, flags & SR_SIE);
}

#endif /* _ASM_RISCV_IRQFLAGS_H */
Commit	Line	Data
6d60b6ee PD	1	/*
	2	* Copyright (C) 2012 Regents of the University of California
	3	*
	4	* This program is free software; you can redistribute it and/or
	5	* modify it under the terms of the GNU General Public License
	6	* as published by the Free Software Foundation, version 2.
	7	*
	8	* This program is distributed in the hope that it will be useful,
	9	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	10	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	11	* GNU General Public License for more details.
	12	*/
	13
	14
	15	#ifndef _ASM_RISCV_IRQFLAGS_H
	16	#define _ASM_RISCV_IRQFLAGS_H
	17
	18	#include <asm/processor.h>
	19	#include <asm/csr.h>
	20
	21	/* read interrupt enabled status */
	22	static inline unsigned long arch_local_save_flags(void)
	23	{
	24	return csr_read(sstatus);
	25	}
	26
	27	/* unconditionally enable interrupts */
	28	static inline void arch_local_irq_enable(void)
	29	{
1125203c	30	csr_set(sstatus, SR_SIE);
6d60b6ee PD	31	}
	32
	33	/* unconditionally disable interrupts */
	34	static inline void arch_local_irq_disable(void)
	35	{
1125203c	36	csr_clear(sstatus, SR_SIE);
6d60b6ee PD	37	}
	38
	39	/* get status and disable interrupts */
	40	static inline unsigned long arch_local_irq_save(void)
	41	{
1125203c	42	return csr_read_clear(sstatus, SR_SIE);
6d60b6ee PD	43	}
	44
	45	/* test flags */
	46	static inline int arch_irqs_disabled_flags(unsigned long flags)
	47	{
1125203c	48	return !(flags & SR_SIE);
6d60b6ee PD	49	}
	50
	51	/* test hardware interrupt enable bit */
	52	static inline int arch_irqs_disabled(void)
	53	{
	54	return arch_irqs_disabled_flags(arch_local_save_flags());
	55	}
	56
	57	/* set interrupt enabled status */
	58	static inline void arch_local_irq_restore(unsigned long flags)
	59	{
1125203c	60	csr_set(sstatus, flags & SR_SIE);
6d60b6ee PD	61	}
	62
	63	#endif /* _ASM_RISCV_IRQFLAGS_H */