1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw> 4 */ 5 #ifndef _ASM_IRQFLAGS_H 6 #define _ASM_IRQFLAGS_H 7 8 #include <asm/registers.h> 9 10 static inline unsigned long arch_local_save_flags(void) 11 { 12 return RDCTL(CTL_FSTATUS); 13 } 14 15 /* 16 * This will restore ALL status register flags, not only the interrupt 17 * mask flag. 18 */ 19 static inline void arch_local_irq_restore(unsigned long flags) 20 { 21 WRCTL(CTL_FSTATUS, flags); 22 } 23 24 static inline void arch_local_irq_disable(void) 25 { 26 unsigned long flags; 27 28 flags = arch_local_save_flags(); 29 arch_local_irq_restore(flags & ~STATUS_PIE); 30 } 31 32 static inline void arch_local_irq_enable(void) 33 { 34 unsigned long flags; 35 36 flags = arch_local_save_flags(); 37 arch_local_irq_restore(flags | STATUS_PIE); 38 } 39 40 static inline int arch_irqs_disabled_flags(unsigned long flags) 41 { 42 return (flags & STATUS_PIE) == 0; 43 } 44 45 static inline int arch_irqs_disabled(void) 46 { 47 return arch_irqs_disabled_flags(arch_local_save_flags()); 48 } 49 50 static inline unsigned long arch_local_irq_save(void) 51 { 52 unsigned long flags; 53 54 flags = arch_local_save_flags(); 55 arch_local_irq_restore(flags & ~STATUS_PIE); 56 return flags; 57 } 58 59 #endif /* _ASM_IRQFLAGS_H */ 60