summaryrefslogtreecommitdiffstats
path: root/include/asm-powerpc/synch.h
blob: 45963e80f557d2b1108781a6d381e2ab37f6ec31 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
#ifndef _ASM_POWERPC_SYNCH_H 
#define _ASM_POWERPC_SYNCH_H 
#ifdef __KERNEL__

#include <linux/stringify.h>
#include <asm/feature-fixups.h>

#ifndef __ASSEMBLY__
extern unsigned int __start___lwsync_fixup, __stop___lwsync_fixup;
extern void do_lwsync_fixups(unsigned long value, void *fixup_start,
			     void *fixup_end);

static inline void eieio(void)
{
	__asm__ __volatile__ ("eieio" : : : "memory");
}

static inline void isync(void)
{
	__asm__ __volatile__ ("isync" : : : "memory");
}
#endif /* __ASSEMBLY__ */

#if defined(__powerpc64__)
#    define LWSYNC	lwsync
#elif defined(CONFIG_E500)
#    define LWSYNC					\
	START_LWSYNC_SECTION(96);			\
	sync;						\
	MAKE_LWSYNC_SECTION_ENTRY(96, __lwsync_fixup);
#else
#    define LWSYNC	sync
#endif

#ifdef CONFIG_SMP
#define ISYNC_ON_SMP	"\n\tisync\n"
#define LWSYNC_ON_SMP	stringify_in_c(LWSYNC) "\n"
#else
#define ISYNC_ON_SMP
#define LWSYNC_ON_SMP
#endif

#endif /* __KERNEL__ */
#endif	/* _ASM_POWERPC_SYNCH_H */