mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-18 10:13:57 +08:00
aafe4dbed0
These are all kernel internal interfaces that get copied around a lot. In most cases, architectures can provide their own optimized versions, but these generic versions can work as well. I have tried to use the most common contents of each header to allow existing architectures to migrate easily. Thanks to Remis for suggesting a number of cleanups. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
73 lines
1.6 KiB
C
73 lines
1.6 KiB
C
#ifndef __ASM_GENERIC_IRQFLAGS_H
|
|
#define __ASM_GENERIC_IRQFLAGS_H
|
|
|
|
/*
|
|
* All architectures should implement at least the first two functions,
|
|
* usually inline assembly will be the best way.
|
|
*/
|
|
#ifndef RAW_IRQ_DISABLED
|
|
#define RAW_IRQ_DISABLED 0
|
|
#define RAW_IRQ_ENABLED 1
|
|
#endif
|
|
|
|
/* read interrupt enabled status */
|
|
#ifndef __raw_local_save_flags
|
|
unsigned long __raw_local_save_flags(void);
|
|
#endif
|
|
|
|
/* set interrupt enabled status */
|
|
#ifndef raw_local_irq_restore
|
|
void raw_local_irq_restore(unsigned long flags);
|
|
#endif
|
|
|
|
/* get status and disable interrupts */
|
|
#ifndef __raw_local_irq_save
|
|
static inline unsigned long __raw_local_irq_save(void)
|
|
{
|
|
unsigned long flags;
|
|
flags = __raw_local_save_flags();
|
|
raw_local_irq_restore(RAW_IRQ_DISABLED);
|
|
return flags;
|
|
}
|
|
#endif
|
|
|
|
/* test flags */
|
|
#ifndef raw_irqs_disabled_flags
|
|
static inline int raw_irqs_disabled_flags(unsigned long flags)
|
|
{
|
|
return flags == RAW_IRQ_DISABLED;
|
|
}
|
|
#endif
|
|
|
|
/* unconditionally enable interrupts */
|
|
#ifndef raw_local_irq_enable
|
|
static inline void raw_local_irq_enable(void)
|
|
{
|
|
raw_local_irq_restore(RAW_IRQ_ENABLED);
|
|
}
|
|
#endif
|
|
|
|
/* unconditionally disable interrupts */
|
|
#ifndef raw_local_irq_disable
|
|
static inline void raw_local_irq_disable(void)
|
|
{
|
|
raw_local_irq_restore(RAW_IRQ_DISABLED);
|
|
}
|
|
#endif
|
|
|
|
/* test hardware interrupt enable bit */
|
|
#ifndef raw_irqs_disabled
|
|
static inline int raw_irqs_disabled(void)
|
|
{
|
|
return raw_irqs_disabled_flags(__raw_local_save_flags());
|
|
}
|
|
#endif
|
|
|
|
#define raw_local_save_flags(flags) \
|
|
do { (flags) = __raw_local_save_flags(); } while (0)
|
|
|
|
#define raw_local_irq_save(flags) \
|
|
do { (flags) = __raw_local_irq_save(); } while (0)
|
|
|
|
#endif /* __ASM_GENERIC_IRQFLAGS_H */
|