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
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