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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Xtensa IRQ flags handling functions
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details.
7 *
8 * Copyright (C) 2001 - 2005 Tensilica Inc.
9 */
10
11#ifndef _XTENSA_IRQFLAGS_H
12#define _XTENSA_IRQFLAGS_H
13
14#include <linux/types.h>
15
16static inline unsigned long arch_local_save_flags(void)
17{
18 unsigned long flags;
19 asm volatile("rsr %0,"__stringify(PS) : "=a" (flags));
20 return flags;
21}
22
23static inline unsigned long arch_local_irq_save(void)
24{
25 unsigned long flags;
26 asm volatile("rsil %0, "__stringify(LOCKLEVEL)
27 : "=a" (flags) :: "memory");
28 return flags;
29}
30
31static inline void arch_local_irq_disable(void)
32{
33 arch_local_irq_save();
34}
35
36static inline void arch_local_irq_enable(void)
37{
38 unsigned long flags;
39 asm volatile("rsil %0, 0" : "=a" (flags) :: "memory");
40}
41
42static inline void arch_local_irq_restore(unsigned long flags)
43{
44 asm volatile("wsr %0, "__stringify(PS)" ; rsync"
45 :: "a" (flags) : "memory");
46}
47
48static inline bool arch_irqs_disabled_flags(unsigned long flags)
49{
50 return (flags & 0xf) != 0;
51}
52
53static inline bool arch_irqs_disabled(void)
54{
55 return arch_irqs_disabled_flags(arch_local_save_flags());
56}
57
58#endif /* _XTENSA_IRQFLAGS_H */