diff options
Diffstat (limited to 'arch/mips/include')
-rw-r--r-- | arch/mips/include/asm/mips-cm.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mips-cm.h b/arch/mips/include/asm/mips-cm.h index 7740c4f..6516e9d 100644 --- a/arch/mips/include/asm/mips-cm.h +++ b/arch/mips/include/asm/mips-cm.h @@ -364,6 +364,10 @@ BUILD_CM_Cx_R_(tcid_8_priority, 0x80) /* GCR_Cx_OTHER register fields */ #define CM_GCR_Cx_OTHER_CORENUM_SHF 16 #define CM_GCR_Cx_OTHER_CORENUM_MSK (_ULCAST_(0xffff) << 16) +#define CM3_GCR_Cx_OTHER_CORE_SHF 8 +#define CM3_GCR_Cx_OTHER_CORE_MSK (_ULCAST_(0x3f) << 8) +#define CM3_GCR_Cx_OTHER_VP_SHF 0 +#define CM3_GCR_Cx_OTHER_VP_MSK (_ULCAST_(0x7) << 0) /* GCR_Cx_RESET_BASE register fields */ #define CM_GCR_Cx_RESET_BASE_BEVEXCBASE_SHF 12 @@ -474,4 +478,32 @@ static inline unsigned int mips_cm_vp_id(unsigned int cpu) return (core * mips_cm_max_vp_width()) + vp; } +#ifdef CONFIG_MIPS_CM + +/** + * mips_cm_lock_other - lock access to another core + * @core: the other core to be accessed + * @vp: the VP within 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_cm_unlock_other. + */ +extern void mips_cm_lock_other(unsigned int core, unsigned int vp); + +/** + * mips_cm_unlock_other - unlock access to another core + * + * Call after operating upon another core via the 'other' register region. + * Must be called after mips_cm_lock_other. + */ +extern void mips_cm_unlock_other(void); + +#else /* !CONFIG_MIPS_CM */ + +static inline void mips_cm_lock_other(unsigned int core) { } +static inline void mips_cm_unlock_other(void) { } + +#endif /* !CONFIG_MIPS_CM */ + #endif /* __MIPS_ASM_MIPS_CM_H__ */ |