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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
*/
#ifndef _ASM_IRQFLAGS_H
#define _ASM_IRQFLAGS_H
#ifndef __ASSEMBLY__
#include <linux/compiler.h>
#include <linux/stringify.h>
#include <asm/loongarch.h>
static inline void arch_local_irq_enable(void)
{
u32 flags = CSR_CRMD_IE;
__asm__ __volatile__(
"csrxchg %[val], %[mask], %[reg]\n\t"
: [val] "+r" (flags)
: [mask] "r" (CSR_CRMD_IE), [reg] "i" (LOONGARCH_CSR_CRMD)
: "memory");
}
static inline void arch_local_irq_disable(void)
{
u32 flags = 0;
__asm__ __volatile__(
"csrxchg %[val], %[mask], %[reg]\n\t"
: [val] "+r" (flags)
: [mask] "r" (CSR_CRMD_IE), [reg] "i" (LOONGARCH_CSR_CRMD)
: "memory");
}
static inline unsigned long arch_local_irq_save(void)
{
u32 flags = 0;
__asm__ __volatile__(
"csrxchg %[val], %[mask], %[reg]\n\t"
: [val] "+r" (flags)
: [mask] "r" (CSR_CRMD_IE), [reg] "i" (LOONGARCH_CSR_CRMD)
: "memory");
return flags;
}
static inline void arch_local_irq_restore(unsigned long flags)
{
__asm__ __volatile__(
"csrxchg %[val], %[mask], %[reg]\n\t"
: [val] "+r" (flags)
: [mask] "r" (CSR_CRMD_IE), [reg] "i" (LOONGARCH_CSR_CRMD)
: "memory");
}
static inline unsigned long arch_local_save_flags(void)
{
u32 flags;
__asm__ __volatile__(
"csrrd %[val], %[reg]\n\t"
: [val] "=r" (flags)
: [reg] "i" (LOONGARCH_CSR_CRMD)
: "memory");
return flags;
}
static inline int arch_irqs_disabled_flags(unsigned long flags)
{
return !(flags & CSR_CRMD_IE);
}
static inline int arch_irqs_disabled(void)
{
return arch_irqs_disabled_flags(arch_local_save_flags());
}
#endif /* #ifndef __ASSEMBLY__ */
#endif /* _ASM_IRQFLAGS_H */