Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

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