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| author | Roland Dreier <roland@eddore.topspincom.com> | 2005-07-27 19:12:56 -0700 |
|---|---|---|
| committer | Roland Dreier <roland@eddore.topspincom.com> | 2005-07-27 19:12:56 -0700 |
| commit | 2868bd281fef21d1e73d6b7648a41efc3d75f10c (patch) | |
| tree | 0ad821cfcc9e3f9e8b662d026bec6bb6d4ce69ac /include/asm-cris/arch-v32/atomic.h | |
| parent | 6d376756f2cf3478d5a4fdb8d18e958948366b9d (diff) | |
| parent | 41c018b7ecb60b1c2c4d5dee0cd37d32a94c45af (diff) | |
| download | kernel-crypto-2868bd281fef21d1e73d6b7648a41efc3d75f10c.tar.gz kernel-crypto-2868bd281fef21d1e73d6b7648a41efc3d75f10c.tar.xz kernel-crypto-2868bd281fef21d1e73d6b7648a41efc3d75f10c.zip | |
Merge /scratch/Ksrc/linux-git/
Diffstat (limited to 'include/asm-cris/arch-v32/atomic.h')
| -rw-r--r-- | include/asm-cris/arch-v32/atomic.h | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/include/asm-cris/arch-v32/atomic.h b/include/asm-cris/arch-v32/atomic.h new file mode 100644 index 00000000000..bbfb7a5ae31 --- /dev/null +++ b/include/asm-cris/arch-v32/atomic.h @@ -0,0 +1,36 @@ +#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 + |