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37 lines
895 B
37 lines
895 B
20 years ago
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#ifndef __ASM_CRIS_ARCH_ATOMIC__
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#define __ASM_CRIS_ARCH_ATOMIC__
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#include <asm/system.h>
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extern void cris_spin_unlock(void *l, int val);
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extern void cris_spin_lock(void *l);
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extern int cris_spin_trylock(void* l);
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#ifndef CONFIG_SMP
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#define cris_atomic_save(addr, flags) local_irq_save(flags);
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#define cris_atomic_restore(addr, flags) local_irq_restore(flags);
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#else
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extern spinlock_t cris_atomic_locks[];
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#define LOCK_COUNT 128
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#define HASH_ADDR(a) (((int)a) & 127)
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#define cris_atomic_save(addr, flags) \
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local_irq_save(flags); \
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cris_spin_lock((void*)&cris_atomic_locks[HASH_ADDR(addr)].lock);
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#define cris_atomic_restore(addr, flags) \
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{ \
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spinlock_t *lock = (void*)&cris_atomic_locks[HASH_ADDR(addr)]; \
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__asm__ volatile ("move.d %1,%0" \
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: "=m" (lock->lock) \
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: "r" (1) \
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: "memory"); \
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local_irq_restore(flags); \
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}
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#endif
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#endif
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