1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun #ifndef __ASM_GENERIC_IRQFLAGS_H 3*4882a593Smuzhiyun #define __ASM_GENERIC_IRQFLAGS_H 4*4882a593Smuzhiyun 5*4882a593Smuzhiyun /* 6*4882a593Smuzhiyun * All architectures should implement at least the first two functions, 7*4882a593Smuzhiyun * usually inline assembly will be the best way. 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun #ifndef ARCH_IRQ_DISABLED 10*4882a593Smuzhiyun #define ARCH_IRQ_DISABLED 0 11*4882a593Smuzhiyun #define ARCH_IRQ_ENABLED 1 12*4882a593Smuzhiyun #endif 13*4882a593Smuzhiyun 14*4882a593Smuzhiyun /* read interrupt enabled status */ 15*4882a593Smuzhiyun #ifndef arch_local_save_flags 16*4882a593Smuzhiyun unsigned long arch_local_save_flags(void); 17*4882a593Smuzhiyun #endif 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun /* set interrupt enabled status */ 20*4882a593Smuzhiyun #ifndef arch_local_irq_restore 21*4882a593Smuzhiyun void arch_local_irq_restore(unsigned long flags); 22*4882a593Smuzhiyun #endif 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun /* get status and disable interrupts */ 25*4882a593Smuzhiyun #ifndef arch_local_irq_save arch_local_irq_save(void)26*4882a593Smuzhiyunstatic inline unsigned long arch_local_irq_save(void) 27*4882a593Smuzhiyun { 28*4882a593Smuzhiyun unsigned long flags; 29*4882a593Smuzhiyun flags = arch_local_save_flags(); 30*4882a593Smuzhiyun arch_local_irq_restore(ARCH_IRQ_DISABLED); 31*4882a593Smuzhiyun return flags; 32*4882a593Smuzhiyun } 33*4882a593Smuzhiyun #endif 34*4882a593Smuzhiyun 35*4882a593Smuzhiyun /* test flags */ 36*4882a593Smuzhiyun #ifndef arch_irqs_disabled_flags arch_irqs_disabled_flags(unsigned long flags)37*4882a593Smuzhiyunstatic inline int arch_irqs_disabled_flags(unsigned long flags) 38*4882a593Smuzhiyun { 39*4882a593Smuzhiyun return flags == ARCH_IRQ_DISABLED; 40*4882a593Smuzhiyun } 41*4882a593Smuzhiyun #endif 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun /* unconditionally enable interrupts */ 44*4882a593Smuzhiyun #ifndef arch_local_irq_enable arch_local_irq_enable(void)45*4882a593Smuzhiyunstatic inline void arch_local_irq_enable(void) 46*4882a593Smuzhiyun { 47*4882a593Smuzhiyun arch_local_irq_restore(ARCH_IRQ_ENABLED); 48*4882a593Smuzhiyun } 49*4882a593Smuzhiyun #endif 50*4882a593Smuzhiyun 51*4882a593Smuzhiyun /* unconditionally disable interrupts */ 52*4882a593Smuzhiyun #ifndef arch_local_irq_disable arch_local_irq_disable(void)53*4882a593Smuzhiyunstatic inline void arch_local_irq_disable(void) 54*4882a593Smuzhiyun { 55*4882a593Smuzhiyun arch_local_irq_restore(ARCH_IRQ_DISABLED); 56*4882a593Smuzhiyun } 57*4882a593Smuzhiyun #endif 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun /* test hardware interrupt enable bit */ 60*4882a593Smuzhiyun #ifndef arch_irqs_disabled arch_irqs_disabled(void)61*4882a593Smuzhiyunstatic inline int arch_irqs_disabled(void) 62*4882a593Smuzhiyun { 63*4882a593Smuzhiyun return arch_irqs_disabled_flags(arch_local_save_flags()); 64*4882a593Smuzhiyun } 65*4882a593Smuzhiyun #endif 66*4882a593Smuzhiyun 67*4882a593Smuzhiyun #endif /* __ASM_GENERIC_IRQFLAGS_H */ 68