1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __PARISC_IRQFLAGS_H
3#define __PARISC_IRQFLAGS_H
4
5#include <linux/types.h>
6#include <asm/psw.h>
7
8static inline unsigned long arch_local_save_flags(void)
9{
10	unsigned long flags;
11	asm volatile("ssm 0, %0" : "=r" (flags) : : "memory");
12	return flags;
13}
14
15static inline void arch_local_irq_disable(void)
16{
17	asm volatile("rsm %0,%%r0\n" : : "i" (PSW_I) : "memory");
18}
19
20static inline void arch_local_irq_enable(void)
21{
22	asm volatile("ssm %0,%%r0\n" : : "i" (PSW_I) : "memory");
23}
24
25static inline unsigned long arch_local_irq_save(void)
26{
27	unsigned long flags;
28	asm volatile("rsm %1,%0" : "=r" (flags) : "i" (PSW_I) : "memory");
29	return flags;
30}
31
32static inline void arch_local_irq_restore(unsigned long flags)
33{
34	/* warn if IRQs are on although they should be off */
35	if (IS_ENABLED(CONFIG_LIGHTWEIGHT_SPINLOCK_CHECK))
36		if (arch_local_save_flags() & PSW_I)
37			asm volatile("break 6,6\n"); /*  SPINLOCK_BREAK_INSN */
38
39	asm volatile("mtsm %0" : : "r" (flags) : "memory");
40}
41
42static inline bool arch_irqs_disabled_flags(unsigned long flags)
43{
44	return (flags & PSW_I) == 0;
45}
46
47static inline bool arch_irqs_disabled(void)
48{
49	return arch_irqs_disabled_flags(arch_local_save_flags());
50}
51
52#endif /* __PARISC_IRQFLAGS_H */
53