diff options
Diffstat (limited to 'arch/parisc/include/asm/irqflags.h')
-rw-r--r-- | arch/parisc/include/asm/irqflags.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/irqflags.h b/arch/parisc/include/asm/irqflags.h new file mode 100644 index 0000000000..00fd877245 --- /dev/null +++ b/arch/parisc/include/asm/irqflags.h @@ -0,0 +1,52 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __PARISC_IRQFLAGS_H +#define __PARISC_IRQFLAGS_H + +#include <linux/types.h> +#include <asm/psw.h> + +static inline unsigned long arch_local_save_flags(void) +{ + unsigned long flags; + asm volatile("ssm 0, %0" : "=r" (flags) : : "memory"); + return flags; +} + +static inline void arch_local_irq_disable(void) +{ + asm volatile("rsm %0,%%r0\n" : : "i" (PSW_I) : "memory"); +} + +static inline void arch_local_irq_enable(void) +{ + asm volatile("ssm %0,%%r0\n" : : "i" (PSW_I) : "memory"); +} + +static inline unsigned long arch_local_irq_save(void) +{ + unsigned long flags; + asm volatile("rsm %1,%0" : "=r" (flags) : "i" (PSW_I) : "memory"); + return flags; +} + +static inline void arch_local_irq_restore(unsigned long flags) +{ + /* warn if IRQs are on although they should be off */ + if (IS_ENABLED(CONFIG_LIGHTWEIGHT_SPINLOCK_CHECK)) + if (arch_local_save_flags() & PSW_I) + asm volatile("break 6,6\n"); /* SPINLOCK_BREAK_INSN */ + + asm volatile("mtsm %0" : : "r" (flags) : "memory"); +} + +static inline bool arch_irqs_disabled_flags(unsigned long flags) +{ + return (flags & PSW_I) == 0; +} + +static inline bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +#endif /* __PARISC_IRQFLAGS_H */ |