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