1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * include/asm/irqflags.h 4 * 5 * IRQ flags handling 6 * 7 * This file gets included from lowlevel asm headers too, to provide 8 * wrapped versions of the local_irq_*() APIs, based on the 9 * arch_local_irq_*() functions from the lowlevel headers. 10 */ 11 #ifndef _ASM_IRQFLAGS_H 12 #define _ASM_IRQFLAGS_H 13 14 #ifndef __ASSEMBLY__ 15 16 #include <linux/types.h> 17 #include <asm/psr.h> 18 19 void arch_local_irq_restore(unsigned long); 20 unsigned long arch_local_irq_save(void); 21 void arch_local_irq_enable(void); 22 23 static inline notrace unsigned long arch_local_save_flags(void) 24 { 25 unsigned long flags; 26 27 asm volatile("rd %%psr, %0" : "=r" (flags)); 28 return flags; 29 } 30 31 static inline notrace void arch_local_irq_disable(void) 32 { 33 arch_local_irq_save(); 34 } 35 36 static inline notrace bool arch_irqs_disabled_flags(unsigned long flags) 37 { 38 return (flags & PSR_PIL) != 0; 39 } 40 41 static inline notrace bool arch_irqs_disabled(void) 42 { 43 return arch_irqs_disabled_flags(arch_local_save_flags()); 44 } 45 46 #endif /* (__ASSEMBLY__) */ 47 48 #endif /* !(_ASM_IRQFLAGS_H) */ 49