Merge branch 'sh/stable-updates'

1 files changed, 28 insertions, 0 deletions

diff --git a/arch/sh/mm/tlb-pteaex.c b/arch/sh/mm/tlb-pteaex.c
index bdd0982b56ee..b71db6af8060 100644
--- a/arch/sh/mm/tlb-pteaex.c
+++ b/arch/sh/mm/tlb-pteaex.c
@@ -77,3 +77,31 @@ void local_flush_tlb_one(unsigned long asid, unsigned long page)
 	__raw_writel(asid, MMU_ITLB_ADDRESS_ARRAY2 | MMU_PAGE_ASSOC_BIT);
 	back_to_cached();
 }
+
+void local_flush_tlb_all(void)
+{
+	unsigned long flags, status;
+	int i;
+
+	/*
+	 * Flush all the TLB.
+	 */
+	local_irq_save(flags);
+	jump_to_uncached();
+
+	status = __raw_readl(MMUCR);
+	status = ((status & MMUCR_URB) >> MMUCR_URB_SHIFT);
+
+	if (status == 0)
+		status = MMUCR_URB_NENTRIES;
+
+	for (i = 0; i < status; i++)
+		__raw_writel(0x0, MMU_UTLB_ADDRESS_ARRAY | (i << 8));
+
+	for (i = 0; i < 4; i++)
+		__raw_writel(0x0, MMU_ITLB_ADDRESS_ARRAY | (i << 8));
+
+	back_to_cached();
+	ctrl_barrier();
+	local_irq_restore(flags);
+}