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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_SCORE_IRQFLAGS_H
#define _ASM_SCORE_IRQFLAGS_H
#ifndef __ASSEMBLY__
#include <linux/types.h>
static inline unsigned long arch_local_save_flags(void)
{
unsigned long flags;
asm volatile(
" mfcr r8, cr0 \n"
" nop \n"
" nop \n"
" mv %0, r8 \n"
" nop \n"
" nop \n"
" nop \n"
" nop \n"
" nop \n"
" ldi r9, 0x1 \n"
" and %0, %0, r9 \n"
: "=r" (flags)
:
: "r8", "r9");
return flags;
}
static inline unsigned long arch_local_irq_save(void)
{
unsigned long flags;
asm volatile(
" mfcr r8, cr0 \n"
" li r9, 0xfffffffe \n"
" nop \n"
" mv %0, r8 \n"
" and r8, r8, r9 \n"
" mtcr r8, cr0 \n"
" nop \n"
" nop \n"
" nop \n"
" nop \n"
" nop \n"
: "=r" (flags)
:
: "r8", "r9", "memory");
return flags;
}
static inline void arch_local_irq_restore(unsigned long flags)
{
asm volatile(
" mfcr r8, cr0 \n"
" ldi r9, 0x1 \n"
" and %0, %0, r9 \n"
" or r8, r8, %0 \n"
" mtcr r8, cr0 \n"
" nop \n"
" nop \n"
" nop \n"
" nop \n"
" nop \n"
:
: "r"(flags)
: "r8", "r9", "memory");
}
static inline void arch_local_irq_enable(void)
{
asm volatile(
" mfcr r8,cr0 \n"
" nop \n"
" nop \n"
" ori r8,0x1 \n"
" mtcr r8,cr0 \n"
" nop \n"
" nop \n"
" nop \n"
" nop \n"
" nop \n"
:
:
: "r8", "memory");
}
static inline void arch_local_irq_disable(void)
{
asm volatile(
" mfcr r8,cr0 \n"
" nop \n"
" nop \n"
" srli r8,r8,1 \n"
" slli r8,r8,1 \n"
" mtcr r8,cr0 \n"
" nop \n"
" nop \n"
" nop \n"
" nop \n"
" nop \n"
:
:
: "r8", "memory");
}
static inline bool arch_irqs_disabled_flags(unsigned long flags)
{
return !(flags & 1);
}
static inline bool arch_irqs_disabled(void)
{
return arch_irqs_disabled_flags(arch_local_save_flags());
}
#endif /* __ASSEMBLY__ */
#endif /* _ASM_SCORE_IRQFLAGS_H */
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