Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
1#ifndef _ASM_POWERPC_SYNCH_H
2#define _ASM_POWERPC_SYNCH_H
3#ifdef __KERNEL__
4
5#include <linux/stringify.h>
6#include <asm/feature-fixups.h>
7
8#if defined(__powerpc64__) || defined(CONFIG_PPC_E500MC)
9#define __SUBARCH_HAS_LWSYNC
10#endif
11
12#ifndef __ASSEMBLY__
13extern unsigned int __start___lwsync_fixup, __stop___lwsync_fixup;
14extern void do_lwsync_fixups(unsigned long value, void *fixup_start,
15 void *fixup_end);
16
17static inline void eieio(void)
18{
19 __asm__ __volatile__ ("eieio" : : : "memory");
20}
21
22static inline void isync(void)
23{
24 __asm__ __volatile__ ("isync" : : : "memory");
25}
26#endif /* __ASSEMBLY__ */
27
28#if defined(__powerpc64__)
29# define LWSYNC lwsync
30#elif defined(CONFIG_E500)
31# define LWSYNC \
32 START_LWSYNC_SECTION(96); \
33 sync; \
34 MAKE_LWSYNC_SECTION_ENTRY(96, __lwsync_fixup);
35#else
36# define LWSYNC sync
37#endif
38
39#ifdef CONFIG_SMP
40#define ISYNC_ON_SMP "\n\tisync\n"
41#define LWSYNC_ON_SMP stringify_in_c(LWSYNC) "\n"
42#else
43#define ISYNC_ON_SMP
44#define LWSYNC_ON_SMP
45#endif
46
47#endif /* __KERNEL__ */
48#endif /* _ASM_POWERPC_SYNCH_H */