projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| feaf7cf1 BB |
1 | #ifndef _ASM_POWERPC_SYNCH_H |
| 2 | #define _ASM_POWERPC_SYNCH_H | |
| 88ced031 | 3 | #ifdef __KERNEL__ |
| feaf7cf1 | 4 | |
| 144b9c13 | 5 | #include <linux/stringify.h> |
| 2d1b2027 | 6 | #include <asm/feature-fixups.h> |
| 144b9c13 | 7 | |
| 46d075be NP |
8 | #if defined(__powerpc64__) || defined(CONFIG_PPC_E500MC) |
| 9 | #define __SUBARCH_HAS_LWSYNC | |
| 10 | #endif | |
| 11 | ||
| 2d1b2027 KG |
12 | #ifndef __ASSEMBLY__ |
| 13 | extern unsigned int __start___lwsync_fixup, __stop___lwsync_fixup; | |
| 14 | extern void do_lwsync_fixups(unsigned long value, void *fixup_start, | |
| 15 | void *fixup_end); | |
| 16 | ||
| 17 | static inline void eieio(void) | |
| 18 | { | |
| 19 | __asm__ __volatile__ ("eieio" : : : "memory"); | |
| 20 | } | |
| 21 | ||
| 22 | static inline void isync(void) | |
| 23 | { | |
| 24 | __asm__ __volatile__ ("isync" : : : "memory"); | |
| 25 | } | |
| 26 | #endif /* __ASSEMBLY__ */ | |
| feaf7cf1 | 27 | |
| 2d1b2027 | 28 | #if defined(__powerpc64__) |
| feaf7cf1 | 29 | # define LWSYNC lwsync |
| 2d1b2027 KG |
30 | #elif defined(CONFIG_E500) |
| 31 | # define LWSYNC \ | |
| 32 | START_LWSYNC_SECTION(96); \ | |
| 33 | sync; \ | |
| 34 | MAKE_LWSYNC_SECTION_ENTRY(96, __lwsync_fixup); | |
| feaf7cf1 BB |
35 | #else |
| 36 | # define LWSYNC sync | |
| 37 | #endif | |
| 38 | ||
| feaf7cf1 | 39 | #ifdef CONFIG_SMP |
| 5a0e9b57 AB |
40 | #define __PPC_ACQUIRE_BARRIER \ |
| 41 | START_LWSYNC_SECTION(97); \ | |
| 42 | isync; \ | |
| 43 | MAKE_LWSYNC_SECTION_ENTRY(97, __lwsync_fixup); | |
| b97021f8 BH |
44 | #define PPC_ACQUIRE_BARRIER "\n" stringify_in_c(__PPC_ACQUIRE_BARRIER) |
| 45 | #define PPC_RELEASE_BARRIER stringify_in_c(LWSYNC) "\n" | |
| 49e9cf3f | 46 | #define PPC_ATOMIC_ENTRY_BARRIER "\n" stringify_in_c(sync) "\n" |
| b97021f8 | 47 | #define PPC_ATOMIC_EXIT_BARRIER "\n" stringify_in_c(sync) "\n" |
| feaf7cf1 | 48 | #else |
| f10e2e5b AB |
49 | #define PPC_ACQUIRE_BARRIER |
| 50 | #define PPC_RELEASE_BARRIER | |
| b97021f8 BH |
51 | #define PPC_ATOMIC_ENTRY_BARRIER |
| 52 | #define PPC_ATOMIC_EXIT_BARRIER | |
| feaf7cf1 BB |
53 | #endif |
| 54 | ||
| 88ced031 | 55 | #endif /* __KERNEL__ */ |
| feaf7cf1 | 56 | #endif /* _ASM_POWERPC_SYNCH_H */ |