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authorLinus Torvalds <torvalds@linux-foundation.org>2010-04-02 07:33:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-04-02 07:33:38 -0700
commitbc53ba2918bef821dec3528397bc49cd55291e56 (patch)
treea7293ae2e1a3d8cd073d46ec25bc42d34825fb09 /arch/sh/mm/tlb-sh3.c
parent42be79e37e264557f12860fa4cc84b4de3685954 (diff)
parentbe97d758e5728099e95fe229866d5c6c900d3092 (diff)
Merge branch 'sh/for-2.6.34' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6
* 'sh/for-2.6.34' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: sh: Fix up the SH-3 build for recent TLB changes. sh: export return_address() symbol. sh: Enable the mmu in start_secondary() sh: Fix FDPIC binary loader arch/sh/kernel: Use set_cpus_allowed_ptr sh: Update ecovec_defconfig USB gadget r8a66597-udc.c: duplicated include sh: update the TLB replacement counter for entry wiring.
Diffstat (limited to 'arch/sh/mm/tlb-sh3.c')
-rw-r--r--arch/sh/mm/tlb-sh3.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/sh/mm/tlb-sh3.c b/arch/sh/mm/tlb-sh3.c
index 4f5f7cbdd50..7a940dbfc2e 100644
--- a/arch/sh/mm/tlb-sh3.c
+++ b/arch/sh/mm/tlb-sh3.c
@@ -77,3 +77,22 @@ void local_flush_tlb_one(unsigned long asid, unsigned long page)
for (i = 0; i < ways; i++)
__raw_writel(data, addr + (i << 8));
}
+
+void local_flush_tlb_all(void)
+{
+ unsigned long flags, status;
+
+ /*
+ * Flush all the TLB.
+ *
+ * Write to the MMU control register's bit:
+ * TF-bit for SH-3, TI-bit for SH-4.
+ * It's same position, bit #2.
+ */
+ local_irq_save(flags);
+ status = __raw_readl(MMUCR);
+ status |= 0x04;
+ __raw_writel(status, MMUCR);
+ ctrl_barrier();
+ local_irq_restore(flags);
+}