1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-only */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Copyright (C) 2012 Regents of the University of California 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun 7*4882a593Smuzhiyun #ifndef _ASM_RISCV_IRQFLAGS_H 8*4882a593Smuzhiyun #define _ASM_RISCV_IRQFLAGS_H 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #include <asm/processor.h> 11*4882a593Smuzhiyun #include <asm/csr.h> 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun /* read interrupt enabled status */ arch_local_save_flags(void)14*4882a593Smuzhiyunstatic inline unsigned long arch_local_save_flags(void) 15*4882a593Smuzhiyun { 16*4882a593Smuzhiyun return csr_read(CSR_STATUS); 17*4882a593Smuzhiyun } 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun /* unconditionally enable interrupts */ arch_local_irq_enable(void)20*4882a593Smuzhiyunstatic inline void arch_local_irq_enable(void) 21*4882a593Smuzhiyun { 22*4882a593Smuzhiyun csr_set(CSR_STATUS, SR_IE); 23*4882a593Smuzhiyun } 24*4882a593Smuzhiyun 25*4882a593Smuzhiyun /* unconditionally disable interrupts */ arch_local_irq_disable(void)26*4882a593Smuzhiyunstatic inline void arch_local_irq_disable(void) 27*4882a593Smuzhiyun { 28*4882a593Smuzhiyun csr_clear(CSR_STATUS, SR_IE); 29*4882a593Smuzhiyun } 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun /* get status and disable interrupts */ arch_local_irq_save(void)32*4882a593Smuzhiyunstatic inline unsigned long arch_local_irq_save(void) 33*4882a593Smuzhiyun { 34*4882a593Smuzhiyun return csr_read_clear(CSR_STATUS, SR_IE); 35*4882a593Smuzhiyun } 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun /* test flags */ arch_irqs_disabled_flags(unsigned long flags)38*4882a593Smuzhiyunstatic inline int arch_irqs_disabled_flags(unsigned long flags) 39*4882a593Smuzhiyun { 40*4882a593Smuzhiyun return !(flags & SR_IE); 41*4882a593Smuzhiyun } 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun /* test hardware interrupt enable bit */ arch_irqs_disabled(void)44*4882a593Smuzhiyunstatic inline int arch_irqs_disabled(void) 45*4882a593Smuzhiyun { 46*4882a593Smuzhiyun return arch_irqs_disabled_flags(arch_local_save_flags()); 47*4882a593Smuzhiyun } 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun /* set interrupt enabled status */ arch_local_irq_restore(unsigned long flags)50*4882a593Smuzhiyunstatic inline void arch_local_irq_restore(unsigned long flags) 51*4882a593Smuzhiyun { 52*4882a593Smuzhiyun csr_set(CSR_STATUS, flags & SR_IE); 53*4882a593Smuzhiyun } 54*4882a593Smuzhiyun 55*4882a593Smuzhiyun #endif /* _ASM_RISCV_IRQFLAGS_H */ 56