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77 lines
1.7 KiB
77 lines
1.7 KiB
/* 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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