mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 15:36:10 +07:00
1125203c13
Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
64 lines
1.5 KiB
C
64 lines
1.5 KiB
C
/*
|
|
* 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 */
|