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
8 static 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
15 static inline void arch_local_irq_disable(void)
16 {
17 asm volatile("rsm %0,%%r0\n" : : "i" (PSW_I) : "memory");
18 }
19
20 static inline void arch_local_irq_enable(void)
21 {
22 asm volatile("ssm %0,%%r0\n" : : "i" (PSW_I) : "memory");
23 }
24
25 static 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
32 static 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
42 static inline bool arch_irqs_disabled_flags(unsigned long flags)
43 {
44 return (flags & PSW_I) == 0;
45 }
46
47 static 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
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