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Sam Ravnborga439fe52008-07-27 23:00:59 +02001/*
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
David Howellsdf9ee292010-10-07 14:08:55 +01008 * arch_local_irq_*() functions from the lowlevel headers.
Sam Ravnborga439fe52008-07-27 23:00:59 +02009 */
10#ifndef _ASM_IRQFLAGS_H
11#define _ASM_IRQFLAGS_H
12
13#ifndef __ASSEMBLY__
14
David Howellsdf9ee292010-10-07 14:08:55 +010015#include <linux/types.h>
David Howellsd550bbd2012-03-28 18:30:03 +010016#include <asm/psr.h>
Sam Ravnborga439fe52008-07-27 23:00:59 +020017
David Howellsdf9ee292010-10-07 14:08:55 +010018extern void arch_local_irq_restore(unsigned long);
19extern unsigned long arch_local_irq_save(void);
20extern void arch_local_irq_enable(void);
21
Steven Rostedt18d85bc2011-07-06 08:00:29 -070022static inline notrace unsigned long arch_local_save_flags(void)
Sam Ravnborga439fe52008-07-27 23:00:59 +020023{
David Howellsdf9ee292010-10-07 14:08:55 +010024 unsigned long flags;
Sam Ravnborga439fe52008-07-27 23:00:59 +020025
David Howellsdf9ee292010-10-07 14:08:55 +010026 asm volatile("rd %%psr, %0" : "=r" (flags));
27 return flags;
Sam Ravnborga439fe52008-07-27 23:00:59 +020028}
29
Steven Rostedt18d85bc2011-07-06 08:00:29 -070030static inline notrace void arch_local_irq_disable(void)
Sam Ravnborga439fe52008-07-27 23:00:59 +020031{
David Howellsdf9ee292010-10-07 14:08:55 +010032 arch_local_irq_save();
33}
34
Steven Rostedt18d85bc2011-07-06 08:00:29 -070035static inline notrace bool arch_irqs_disabled_flags(unsigned long flags)
David Howellsdf9ee292010-10-07 14:08:55 +010036{
37 return (flags & PSR_PIL) != 0;
38}
39
Steven Rostedt18d85bc2011-07-06 08:00:29 -070040static inline notrace bool arch_irqs_disabled(void)
David Howellsdf9ee292010-10-07 14:08:55 +010041{
42 return arch_irqs_disabled_flags(arch_local_save_flags());
Sam Ravnborga439fe52008-07-27 23:00:59 +020043}
44
45#endif /* (__ASSEMBLY__) */
46
47#endif /* !(_ASM_IRQFLAGS_H) */