xref: /openbmc/linux/arch/parisc/include/asm/irqflags.h (revision 40c9c62c)
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 
arch_local_save_flags(void)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 
arch_local_irq_disable(void)15 static inline void arch_local_irq_disable(void)
16 {
17 	asm volatile("rsm %0,%%r0\n" : : "i" (PSW_I) : "memory");
18 }
19 
arch_local_irq_enable(void)20 static inline void arch_local_irq_enable(void)
21 {
22 	asm volatile("ssm %0,%%r0\n" : : "i" (PSW_I) : "memory");
23 }
24 
arch_local_irq_save(void)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 
arch_local_irq_restore(unsigned long flags)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 
arch_irqs_disabled_flags(unsigned long flags)42 static inline bool arch_irqs_disabled_flags(unsigned long flags)
43 {
44 	return (flags & PSW_I) == 0;
45 }
46 
arch_irqs_disabled(void)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