1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (C) 2010 Thomas Chou <thomas@wytron.com.tw> 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun #ifndef _ASM_IRQFLAGS_H 6*4882a593Smuzhiyun #define _ASM_IRQFLAGS_H 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #include <asm/registers.h> 9*4882a593Smuzhiyun arch_local_save_flags(void)10*4882a593Smuzhiyunstatic inline unsigned long arch_local_save_flags(void) 11*4882a593Smuzhiyun { 12*4882a593Smuzhiyun return RDCTL(CTL_FSTATUS); 13*4882a593Smuzhiyun } 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun /* 16*4882a593Smuzhiyun * This will restore ALL status register flags, not only the interrupt 17*4882a593Smuzhiyun * mask flag. 18*4882a593Smuzhiyun */ arch_local_irq_restore(unsigned long flags)19*4882a593Smuzhiyunstatic inline void arch_local_irq_restore(unsigned long flags) 20*4882a593Smuzhiyun { 21*4882a593Smuzhiyun WRCTL(CTL_FSTATUS, flags); 22*4882a593Smuzhiyun } 23*4882a593Smuzhiyun arch_local_irq_disable(void)24*4882a593Smuzhiyunstatic inline void arch_local_irq_disable(void) 25*4882a593Smuzhiyun { 26*4882a593Smuzhiyun unsigned long flags; 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun flags = arch_local_save_flags(); 29*4882a593Smuzhiyun arch_local_irq_restore(flags & ~STATUS_PIE); 30*4882a593Smuzhiyun } 31*4882a593Smuzhiyun arch_local_irq_enable(void)32*4882a593Smuzhiyunstatic inline void arch_local_irq_enable(void) 33*4882a593Smuzhiyun { 34*4882a593Smuzhiyun unsigned long flags; 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun flags = arch_local_save_flags(); 37*4882a593Smuzhiyun arch_local_irq_restore(flags | STATUS_PIE); 38*4882a593Smuzhiyun } 39*4882a593Smuzhiyun arch_irqs_disabled_flags(unsigned long flags)40*4882a593Smuzhiyunstatic inline int arch_irqs_disabled_flags(unsigned long flags) 41*4882a593Smuzhiyun { 42*4882a593Smuzhiyun return (flags & STATUS_PIE) == 0; 43*4882a593Smuzhiyun } 44*4882a593Smuzhiyun arch_irqs_disabled(void)45*4882a593Smuzhiyunstatic inline int arch_irqs_disabled(void) 46*4882a593Smuzhiyun { 47*4882a593Smuzhiyun return arch_irqs_disabled_flags(arch_local_save_flags()); 48*4882a593Smuzhiyun } 49*4882a593Smuzhiyun arch_local_irq_save(void)50*4882a593Smuzhiyunstatic inline unsigned long arch_local_irq_save(void) 51*4882a593Smuzhiyun { 52*4882a593Smuzhiyun unsigned long flags; 53*4882a593Smuzhiyun 54*4882a593Smuzhiyun flags = arch_local_save_flags(); 55*4882a593Smuzhiyun arch_local_irq_restore(flags & ~STATUS_PIE); 56*4882a593Smuzhiyun return flags; 57*4882a593Smuzhiyun } 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun #endif /* _ASM_IRQFLAGS_H */ 60