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#ifndef __ASM_SPINLOCK_H
#define __ASM_SPINLOCK_H
#include <mini-os/lib.h>
/*
* Your basic SMP spinlocks, allowing only a single CPU anywhere
*/
typedef struct {
volatile unsigned int slock;
} spinlock_t;
#include <mini-os/arch_spinlock.h>
#define SPINLOCK_MAGIC 0xdead4ead
#define SPIN_LOCK_UNLOCKED ARCH_SPIN_LOCK_UNLOCKED
#define spin_lock_init(x) do { *(x) = SPIN_LOCK_UNLOCKED; } while(0)
/*
* Simple spin lock operations. There are two variants, one clears IRQ's
* on the local processor, one does not.
*
* We make no fairness assumptions. They have a cost.
*/
#define spin_is_locked(x) arch_spin_is_locked(x)
#define spin_unlock_wait(x) arch_spin_unlock_wait(x)
#define _spin_trylock(lock) ({_raw_spin_trylock(lock) ? \
1 : ({ 0;});})
#define _spin_lock(lock) \
do { \
_raw_spin_lock(lock); \
} while(0)
#define _spin_unlock(lock) \
do { \
_raw_spin_unlock(lock); \
} while (0)
#define spin_lock(lock) _spin_lock(lock)
#define spin_unlock(lock) _spin_unlock(lock)
#define DEFINE_SPINLOCK(x) spinlock_t x = SPIN_LOCK_UNLOCKED
#endif
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