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//usr/src/linux-headers-5.4.0-216/arch/riscv/include/asm/irqflags.h
/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2012 Regents of the University of California */ #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(CSR_SSTATUS); } /* unconditionally enable interrupts */ static inline void arch_local_irq_enable(void) { csr_set(CSR_SSTATUS, SR_SIE); } /* unconditionally disable interrupts */ static inline void arch_local_irq_disable(void) { csr_clear(CSR_SSTATUS, SR_SIE); } /* get status and disable interrupts */ static inline unsigned long arch_local_irq_save(void) { return csr_read_clear(CSR_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(CSR_SSTATUS, flags & SR_SIE); } #endif /* _ASM_RISCV_IRQFLAGS_H */