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