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