1#ifndef __ASM_CRIS_ARCH_ATOMIC__
2#define __ASM_CRIS_ARCH_ATOMIC__
3
4#include <asm/system.h>
5
6extern void cris_spin_unlock(void *l, int val);
7extern void cris_spin_lock(void *l);
8extern int cris_spin_trylock(void* l);
9
10#ifndef CONFIG_SMP
11#define cris_atomic_save(addr, flags) local_irq_save(flags);
12#define cris_atomic_restore(addr, flags) local_irq_restore(flags);
13#else
14
15extern spinlock_t cris_atomic_locks[];
16#define LOCK_COUNT 128
17#define HASH_ADDR(a) (((int)a) & 127)
18
19#define cris_atomic_save(addr, flags) \
20  local_irq_save(flags); \
21  cris_spin_lock((void*)&cris_atomic_locks[HASH_ADDR(addr)].lock);
22
23#define cris_atomic_restore(addr, flags) \
24  { \
25    spinlock_t *lock = (void*)&cris_atomic_locks[HASH_ADDR(addr)]; \
26    __asm__ volatile ("move.d %1,%0" \
27	                  : "=m" (lock->lock) \
28			  : "r" (1) \
29			  : "memory"); \
30    local_irq_restore(flags); \
31  }
32
33#endif
34
35#endif
36