These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / arch / arc / include / asm / mmu.h

diff --git a/kernel/arch/arc/include/asm/mmu.h b/kernel/arch/arc/include/asm/mmu.h
index 8c84ae9..b144d7c 100644 (file)
--- a/kernel/arch/arc/include/asm/mmu.h
+++ b/kernel/arch/arc/include/asm/mmu.h
@@ -15,24 +15,43 @@
 #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_TLBPD1HI       0       /* Dummy: allows code sharing with ARC700 */
 #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_TLBPD1HI       0x463
+#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 +64,11 @@
 #define TLBIVUTLB   0x6                /* explicitly inv uTLBs */
 #endif
 
+#if (CONFIG_ARC_MMU_VER >= 4)
+#define TLBInsertEntry 0x7
+#define TLBDeleteEntry 0x8
+#endif
+
 #ifndef __ASSEMBLY__
 
 typedef struct {
@@ -61,6 +85,11 @@ void arc_mmu_init(void);
 extern char *arc_mmu_mumbojumbo(int cpu_id, char *buf, int len);
 void read_decode_mmu_bcr(void);
 
+static inline int is_pae40_enabled(void)
+{
+       return IS_ENABLED(CONFIG_ARC_HAS_PAE40);
+}
+
 #endif /* !__ASSEMBLY__ */
 
 #endif