projects / mirror_ubuntu-jammy-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 50acfb2b | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
| 6d60b6ee PD |
2 | /* |
| 3 | * Copyright (C) 2012 Regents of the University of California | |
| 6d60b6ee PD |
4 | */ |
| 5 | ||
| 6 | ||
| 7 | #ifndef _ASM_RISCV_IRQFLAGS_H | |
| 8 | #define _ASM_RISCV_IRQFLAGS_H | |
| 9 | ||
| 10 | #include <asm/processor.h> | |
| 11 | #include <asm/csr.h> | |
| 12 | ||
| 13 | /* read interrupt enabled status */ | |
| 14 | static inline unsigned long arch_local_save_flags(void) | |
| 15 | { | |
| a4c3733d | 16 | return csr_read(CSR_STATUS); |
| 6d60b6ee PD |
17 | } |
| 18 | ||
| 19 | /* unconditionally enable interrupts */ | |
| 20 | static inline void arch_local_irq_enable(void) | |
| 21 | { | |
| a4c3733d | 22 | csr_set(CSR_STATUS, SR_IE); |
| 6d60b6ee PD |
23 | } |
| 24 | ||
| 25 | /* unconditionally disable interrupts */ | |
| 26 | static inline void arch_local_irq_disable(void) | |
| 27 | { | |
| a4c3733d | 28 | csr_clear(CSR_STATUS, SR_IE); |
| 6d60b6ee PD |
29 | } |
| 30 | ||
| 31 | /* get status and disable interrupts */ | |
| 32 | static inline unsigned long arch_local_irq_save(void) | |
| 33 | { | |
| a4c3733d | 34 | return csr_read_clear(CSR_STATUS, SR_IE); |
| 6d60b6ee PD |
35 | } |
| 36 | ||
| 37 | /* test flags */ | |
| 38 | static inline int arch_irqs_disabled_flags(unsigned long flags) | |
| 39 | { | |
| a4c3733d | 40 | return !(flags & SR_IE); |
| 6d60b6ee PD |
41 | } |
| 42 | ||
| 43 | /* test hardware interrupt enable bit */ | |
| 44 | static inline int arch_irqs_disabled(void) | |
| 45 | { | |
| 46 | return arch_irqs_disabled_flags(arch_local_save_flags()); | |
| 47 | } | |
| 48 | ||
| 49 | /* set interrupt enabled status */ | |
| 50 | static inline void arch_local_irq_restore(unsigned long flags) | |
| 51 | { | |
| a4c3733d | 52 | csr_set(CSR_STATUS, flags & SR_IE); |
| 6d60b6ee PD |
53 | } |
| 54 | ||
| 55 | #endif /* _ASM_RISCV_IRQFLAGS_H */ |