/* * Xtensa IRQ flags handling functions * * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2001 - 2005 Tensilica Inc. */ #ifndef _XTENSA_IRQFLAGS_H #define _XTENSA_IRQFLAGS_H #include <linux/types.h> static inline unsigned long arch_local_save_flags(void) { unsigned long flags; asm volatile("rsr %0,"__stringify(PS) : "=a" (flags)); return flags; } static inline unsigned long arch_local_irq_save(void) { unsigned long flags; asm volatile("rsil %0, "__stringify(LOCKLEVEL) : "=a" (flags) :: "memory"); return flags; } static inline void arch_local_irq_disable(void) { arch_local_irq_save(); } static inline void arch_local_irq_enable(void) { unsigned long flags; asm volatile("rsil %0, 0" : "=a" (flags) :: "memory"); } static inline void arch_local_irq_restore(unsigned long flags) { asm volatile("wsr %0, "__stringify(PS)" ; rsync" :: "a" (flags) : "memory"); } static inline bool arch_irqs_disabled_flags(unsigned long flags) { return (flags & 0xf) != 0; } static inline bool arch_irqs_disabled(void) { return arch_irqs_disabled_flags(arch_local_save_flags()); } #endif /* _XTENSA_IRQFLAGS_H */