/* * Copyright (C) 2004-2006 Atmel Corporation * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef __ASM_AVR32_IRQFLAGS_H #define __ASM_AVR32_IRQFLAGS_H #include <asm/sysreg.h> static inline unsigned long __raw_local_save_flags(void) { return sysreg_read(SR); } #define raw_local_save_flags(x) \ do { (x) = __raw_local_save_flags(); } while (0) /* * This will restore ALL status register flags, not only the interrupt * mask flag. * * The empty asm statement informs the compiler of this fact while * also serving as a barrier. */ static inline void raw_local_irq_restore(unsigned long flags) { sysreg_write(SR, flags); asm volatile("" : : : "memory", "cc"); } static inline void raw_local_irq_disable(void) { asm volatile("ssrf %0" : : "n"(SYSREG_GM_OFFSET) : "memory"); } static inline void raw_local_irq_enable(void) { asm volatile("csrf %0" : : "n"(SYSREG_GM_OFFSET) : "memory"); } static inline int raw_irqs_disabled_flags(unsigned long flags) { return (flags & SYSREG_BIT(GM)) != 0; } static inline int raw_irqs_disabled(void) { unsigned long flags = __raw_local_save_flags(); return raw_irqs_disabled_flags(flags); } static inline unsigned long __raw_local_irq_save(void) { unsigned long flags = __raw_local_save_flags(); raw_local_irq_disable(); return flags; } #define raw_local_irq_save(flags) \ do { (flags) = __raw_local_irq_save(); } while (0) #endif /* __ASM_AVR32_IRQFLAGS_H */