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55 lines
1.1 KiB
55 lines
1.1 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* Copyright (C) 2012 Regents of the University of California |
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*/ |
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#ifndef _ASM_RISCV_IRQFLAGS_H |
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#define _ASM_RISCV_IRQFLAGS_H |
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#include <asm/processor.h> |
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#include <asm/csr.h> |
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/* read interrupt enabled status */ |
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static inline unsigned long arch_local_save_flags(void) |
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{ |
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return csr_read(CSR_STATUS); |
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} |
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/* unconditionally enable interrupts */ |
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static inline void arch_local_irq_enable(void) |
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{ |
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csr_set(CSR_STATUS, SR_IE); |
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} |
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/* unconditionally disable interrupts */ |
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static inline void arch_local_irq_disable(void) |
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{ |
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csr_clear(CSR_STATUS, SR_IE); |
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} |
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/* get status and disable interrupts */ |
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static inline unsigned long arch_local_irq_save(void) |
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{ |
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return csr_read_clear(CSR_STATUS, SR_IE); |
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} |
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/* test flags */ |
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static inline int arch_irqs_disabled_flags(unsigned long flags) |
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{ |
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return !(flags & SR_IE); |
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} |
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/* test hardware interrupt enable bit */ |
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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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/* set interrupt enabled status */ |
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static inline void arch_local_irq_restore(unsigned long flags) |
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{ |
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csr_set(CSR_STATUS, flags & SR_IE); |
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} |
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#endif /* _ASM_RISCV_IRQFLAGS_H */
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