diff options
Diffstat (limited to 'arch/mips/include/asm/mips-cpc.h')
| -rw-r--r-- | arch/mips/include/asm/mips-cpc.h | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/arch/mips/include/asm/mips-cpc.h b/arch/mips/include/asm/mips-cpc.h index 988507e46d42..e139a534e0fd 100644 --- a/arch/mips/include/asm/mips-cpc.h +++ b/arch/mips/include/asm/mips-cpc.h @@ -72,7 +72,12 @@ static inline bool mips_cpc_present(void) #define MIPS_CPC_COCB_OFS 0x4000 /* Macros to ease the creation of register access functions */ -#define BUILD_CPC_R_(name, off) \ +#define BUILD_CPC_R_(name, off) \ +static inline u32 *addr_cpc_##name(void) \ +{ \ + return (u32 *)(mips_cpc_base + (off)); \ +} \ + \ static inline u32 read_cpc_##name(void) \ { \ return __raw_readl(mips_cpc_base + (off)); \ @@ -147,4 +152,31 @@ BUILD_CPC_Cx_RW(other, 0x10) #define CPC_Cx_OTHER_CORENUM_SHF 16 #define CPC_Cx_OTHER_CORENUM_MSK (_ULCAST_(0xff) << 16) +#ifdef CONFIG_MIPS_CPC + +/** + * mips_cpc_lock_other - lock access to another core + * core: the other core to be accessed + * + * Call before operating upon a core via the 'other' register region in + * order to prevent the region being moved during access. Must be followed + * by a call to mips_cpc_unlock_other. + */ +extern void mips_cpc_lock_other(unsigned int core); + +/** + * mips_cpc_unlock_other - unlock access to another core + * + * Call after operating upon another core via the 'other' register region. + * Must be called after mips_cpc_lock_other. + */ +extern void mips_cpc_unlock_other(void); + +#else /* !CONFIG_MIPS_CPC */ + +static inline void mips_cpc_lock_other(unsigned int core) { } +static inline void mips_cpc_unlock_other(void) { } + +#endif /* !CONFIG_MIPS_CPC */ + #endif /* __MIPS_ASM_MIPS_CPC_H__ */ |