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| author | Vineet Gupta <vgupta@synopsys.com> | 2015-04-06 11:52:39 (GMT) |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2015-06-22 08:36:55 (GMT) |
| commit | d7a512bfe0be3790bae8465b4cb6c1bbca03c616 (patch) | |
| tree | fd9a859c1e104ffa9032720ffd99dac0c4213478 /arch/arc/include | |
| parent | 4de0e52867d831057676340271d21cfb920eac1c (diff) | |
| download | linux-d7a512bfe0be3790bae8465b4cb6c1bbca03c616.tar.xz | |
ARCv2: MMUv4: TLB programming Model changes
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/include')
| -rw-r--r-- | arch/arc/include/asm/arcregs.h | 2 | ||||
| -rw-r--r-- | arch/arc/include/asm/mmu.h | 24 | ||||
| -rw-r--r-- | arch/arc/include/asm/pgtable.h | 10 |
3 files changed, 34 insertions, 2 deletions
diff --git a/arch/arc/include/asm/arcregs.h b/arch/arc/include/asm/arcregs.h index 373bb41..bcb08cd 100644 --- a/arch/arc/include/asm/arcregs.h +++ b/arch/arc/include/asm/arcregs.h @@ -326,7 +326,7 @@ struct bcr_generic { */ struct cpuinfo_arc_mmu { - unsigned int ver:4, pg_sz_k:8, pad:8, u_dtlb:6, u_itlb:6; + unsigned int ver:4, pg_sz_k:8, s_pg_sz_m:8, u_dtlb:6, u_itlb:6; unsigned int num_tlb:16, sets:12, ways:4; }; diff --git a/arch/arc/include/asm/mmu.h b/arch/arc/include/asm/mmu.h index 8c84ae9..0f9c3eb 100644 --- a/arch/arc/include/asm/mmu.h +++ b/arch/arc/include/asm/mmu.h @@ -15,24 +15,41 @@ #define CONFIG_ARC_MMU_VER 2 #elif defined(CONFIG_ARC_MMU_V3) #define CONFIG_ARC_MMU_VER 3 +#elif defined(CONFIG_ARC_MMU_V4) +#define CONFIG_ARC_MMU_VER 4 #endif /* MMU Management regs */ #define ARC_REG_MMU_BCR 0x06f +#if (CONFIG_ARC_MMU_VER < 4) #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 +#else +#define ARC_REG_TLBPD0 0x460 +#define ARC_REG_TLBPD1 0x461 +#define ARC_REG_TLBINDEX 0x464 +#define ARC_REG_TLBCOMMAND 0x465 +#define ARC_REG_PID 0x468 +#define ARC_REG_SCRATCH_DATA0 0x46c +#endif /* Bits in MMU PID register */ -#define MMU_ENABLE (1 << 31) /* Enable MMU for process */ +#define __TLB_ENABLE (1 << 31) +#define __PROG_ENABLE (1 << 30) +#define MMU_ENABLE (__TLB_ENABLE | __PROG_ENABLE) /* Error code if probe fails */ #define TLB_LKUP_ERR 0x80000000 +#if (CONFIG_ARC_MMU_VER < 4) #define TLB_DUP_ERR (TLB_LKUP_ERR | 0x00000001) +#else +#define TLB_DUP_ERR (TLB_LKUP_ERR | 0x40000000) +#endif /* TLB Commands */ #define TLBWrite 0x1 @@ -45,6 +62,11 @@ #define TLBIVUTLB 0x6 /* explicitly inv uTLBs */ #endif +#if (CONFIG_ARC_MMU_VER >= 4) +#define TLBInsertEntry 0x7 +#define TLBDeleteEntry 0x8 +#endif + #ifndef __ASSEMBLY__ typedef struct { diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h index 9615fe1..1281718 100644 --- a/arch/arc/include/asm/pgtable.h +++ b/arch/arc/include/asm/pgtable.h @@ -72,8 +72,18 @@ #define _PAGE_READ (1<<3) /* Page has user read perm (H) */ #define _PAGE_ACCESSED (1<<4) /* Page is accessed (S) */ #define _PAGE_MODIFIED (1<<5) /* Page modified (dirty) (S) */ + +#if (CONFIG_ARC_MMU_VER >= 4) +#define _PAGE_WTHRU (1<<7) /* Page cache mode write-thru (H) */ +#endif + #define _PAGE_GLOBAL (1<<8) /* Page is global (H) */ #define _PAGE_PRESENT (1<<9) /* TLB entry is valid (H) */ + +#if (CONFIG_ARC_MMU_VER >= 4) +#define _PAGE_SZ (1<<10) /* Page Size indicator (H) */ +#endif + #define _PAGE_SHARED_CODE (1<<11) /* Shared Code page with cmn vaddr usable for shared TLB entries (H) */ #endif |