diff options
Diffstat (limited to 'arch/arc/include/asm/mmu.h')
| -rw-r--r-- | arch/arc/include/asm/mmu.h | 51 |
1 files changed, 47 insertions, 4 deletions
diff --git a/arch/arc/include/asm/mmu.h b/arch/arc/include/asm/mmu.h index 56b02320f1a..8c84ae98c33 100644 --- a/arch/arc/include/asm/mmu.h +++ b/arch/arc/include/asm/mmu.h @@ -9,15 +9,58 @@ #ifndef _ASM_ARC_MMU_H #define _ASM_ARC_MMU_H +#if defined(CONFIG_ARC_MMU_V1) +#define CONFIG_ARC_MMU_VER 1 +#elif defined(CONFIG_ARC_MMU_V2) +#define CONFIG_ARC_MMU_VER 2 +#elif defined(CONFIG_ARC_MMU_V3) +#define CONFIG_ARC_MMU_VER 3 +#endif + +/* MMU Management regs */ +#define ARC_REG_MMU_BCR 0x06f +#define ARC_REG_TLBPD0 0x405 +#define ARC_REG_TLBPD1 0x406 +#define ARC_REG_TLBINDEX 0x407 +#define ARC_REG_TLBCOMMAND 0x408 +#define ARC_REG_PID 0x409 +#define ARC_REG_SCRATCH_DATA0 0x418 + +/* Bits in MMU PID register */ +#define MMU_ENABLE (1 << 31) /* Enable MMU for process */ + +/* Error code if probe fails */ +#define TLB_LKUP_ERR 0x80000000 + +#define TLB_DUP_ERR (TLB_LKUP_ERR | 0x00000001) + +/* TLB Commands */ +#define TLBWrite 0x1 +#define TLBRead 0x2 +#define TLBGetIndex 0x3 +#define TLBProbe 0x4 + +#if (CONFIG_ARC_MMU_VER >= 2) +#define TLBWriteNI 0x5 /* write JTLB without inv uTLBs */ +#define TLBIVUTLB 0x6 /* explicitly inv uTLBs */ +#endif + #ifndef __ASSEMBLY__ typedef struct { - unsigned long asid; /* Pvt Addr-Space ID for mm */ -#ifdef CONFIG_ARC_TLB_DBG - struct task_struct *tsk; -#endif + unsigned long asid[NR_CPUS]; /* 8 bit MMU PID + Generation cycle */ } mm_context_t; +#ifdef CONFIG_ARC_DBG_TLB_PARANOIA +void tlb_paranoid_check(unsigned int mm_asid, unsigned long address); +#else +#define tlb_paranoid_check(a, b) #endif +void arc_mmu_init(void); +extern char *arc_mmu_mumbojumbo(int cpu_id, char *buf, int len); +void read_decode_mmu_bcr(void); + +#endif /* !__ASSEMBLY__ */ + #endif |