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-rw-r--r--arch/arc/mm/tlb.c74
1 files changed, 29 insertions, 45 deletions
diff --git a/arch/arc/mm/tlb.c b/arch/arc/mm/tlb.c
index 417f05ac4397..210d807983dd 100644
--- a/arch/arc/mm/tlb.c
+++ b/arch/arc/mm/tlb.c
@@ -118,6 +118,33 @@ static inline void __tlb_entry_erase(void)
 	write_aux_reg(ARC_REG_TLBCOMMAND, TLBWrite);
 }
 
+static void utlb_invalidate(void)
+{
+#if (CONFIG_ARC_MMU_VER >= 2)
+
+#if (CONFIG_ARC_MMU_VER == 2)
+	/* MMU v2 introduced the uTLB Flush command.
+	 * There was however an obscure hardware bug, where uTLB flush would
+	 * fail when a prior probe for J-TLB (both totally unrelated) would
+	 * return lkup err - because the entry didn't exist in MMU.
+	 * The Workround was to set Index reg with some valid value, prior to
+	 * flush. This was fixed in MMU v3
+	 */
+	unsigned int idx;
+
+	/* make sure INDEX Reg is valid */
+	idx = read_aux_reg(ARC_REG_TLBINDEX);
+
+	/* If not write some dummy val */
+	if (unlikely(idx & TLB_LKUP_ERR))
+		write_aux_reg(ARC_REG_TLBINDEX, 0xa);
+#endif
+
+	write_aux_reg(ARC_REG_TLBCOMMAND, TLBIVUTLB);
+#endif
+
+}
+
 #if (CONFIG_ARC_MMU_VER < 4)
 
 static inline unsigned int tlb_entry_lkup(unsigned long vaddr_n_asid)
@@ -149,44 +176,6 @@ static void tlb_entry_erase(unsigned int vaddr_n_asid)
 	}
 }
 
-/****************************************************************************
- * ARC700 MMU caches recently used J-TLB entries (RAM) as uTLBs (FLOPs)
- *
- * New IVUTLB cmd in MMU v2 explictly invalidates the uTLB
- *
- * utlb_invalidate ( )
- *  -For v2 MMU calls Flush uTLB Cmd
- *  -For v1 MMU does nothing (except for Metal Fix v1 MMU)
- *      This is because in v1 TLBWrite itself invalidate uTLBs
- ***************************************************************************/
-
-static void utlb_invalidate(void)
-{
-#if (CONFIG_ARC_MMU_VER >= 2)
-
-#if (CONFIG_ARC_MMU_VER == 2)
-	/* MMU v2 introduced the uTLB Flush command.
-	 * There was however an obscure hardware bug, where uTLB flush would
-	 * fail when a prior probe for J-TLB (both totally unrelated) would
-	 * return lkup err - because the entry didn't exist in MMU.
-	 * The Workround was to set Index reg with some valid value, prior to
-	 * flush. This was fixed in MMU v3 hence not needed any more
-	 */
-	unsigned int idx;
-
-	/* make sure INDEX Reg is valid */
-	idx = read_aux_reg(ARC_REG_TLBINDEX);
-
-	/* If not write some dummy val */
-	if (unlikely(idx & TLB_LKUP_ERR))
-		write_aux_reg(ARC_REG_TLBINDEX, 0xa);
-#endif
-
-	write_aux_reg(ARC_REG_TLBCOMMAND, TLBIVUTLB);
-#endif
-
-}
-
 static void tlb_entry_insert(unsigned int pd0, pte_t pd1)
 {
 	unsigned int idx;
@@ -219,11 +208,6 @@ static void tlb_entry_insert(unsigned int pd0, pte_t pd1)
 
 #else	/* CONFIG_ARC_MMU_VER >= 4) */
 
-static void utlb_invalidate(void)
-{
-	/* No need since uTLB is always in sync with JTLB */
-}
-
 static void tlb_entry_erase(unsigned int vaddr_n_asid)
 {
 	write_aux_reg(ARC_REG_TLBPD0, vaddr_n_asid | _PAGE_PRESENT);
@@ -267,7 +251,7 @@ noinline void local_flush_tlb_all(void)
 	for (entry = 0; entry < num_tlb; entry++) {
 		/* write this entry to the TLB */
 		write_aux_reg(ARC_REG_TLBINDEX, entry);
-		write_aux_reg(ARC_REG_TLBCOMMAND, TLBWrite);
+		write_aux_reg(ARC_REG_TLBCOMMAND, TLBWriteNI);
 	}
 
 	if (IS_ENABLED(CONFIG_TRANSPARENT_HUGEPAGE)) {
@@ -278,7 +262,7 @@ noinline void local_flush_tlb_all(void)
 
 		for (entry = stlb_idx; entry < stlb_idx + 16; entry++) {
 			write_aux_reg(ARC_REG_TLBINDEX, entry);
-			write_aux_reg(ARC_REG_TLBCOMMAND, TLBWrite);
+			write_aux_reg(ARC_REG_TLBCOMMAND, TLBWriteNI);
 		}
 	}