1 #ifndef _ASM_POWERPC_SYNCH_H
2 #define _ASM_POWERPC_SYNCH_H
5 #include <linux/stringify.h>
6 #include <asm/feature-fixups.h>
9 extern unsigned int __start___lwsync_fixup, __stop___lwsync_fixup;
10 extern void do_lwsync_fixups(unsigned long value, void *fixup_start,
13 static inline void eieio(void)
15 __asm__ __volatile__ ("eieio" : : : "memory");
18 static inline void isync(void)
20 __asm__ __volatile__ ("isync" : : : "memory");
22 #endif /* __ASSEMBLY__ */
24 #if defined(__powerpc64__)
25 # define LWSYNC lwsync
26 #elif defined(CONFIG_E500)
28 START_LWSYNC_SECTION(96); \
30 MAKE_LWSYNC_SECTION_ENTRY(96, __lwsync_fixup);
36 #define __PPC_ACQUIRE_BARRIER \
37 START_LWSYNC_SECTION(97); \
39 MAKE_LWSYNC_SECTION_ENTRY(97, __lwsync_fixup);
40 #define PPC_ACQUIRE_BARRIER "\n" stringify_in_c(__PPC_ACQUIRE_BARRIER)
41 #define PPC_RELEASE_BARRIER stringify_in_c(LWSYNC) "\n"
42 #define PPC_ATOMIC_ENTRY_BARRIER "\n" stringify_in_c(sync) "\n"
43 #define PPC_ATOMIC_EXIT_BARRIER "\n" stringify_in_c(sync) "\n"
45 #define PPC_ACQUIRE_BARRIER
46 #define PPC_RELEASE_BARRIER
47 #define PPC_ATOMIC_ENTRY_BARRIER
48 #define PPC_ATOMIC_EXIT_BARRIER
51 #endif /* __KERNEL__ */
52 #endif /* _ASM_POWERPC_SYNCH_H */