1 files changed, 52 insertions, 0 deletions

diff --git a/arch/arm/mm/tlb-v3.S b/arch/arm/mm/tlb-v3.S
new file mode 100644
index 000000000000..44b0daeaff9b
--- /dev/null
+++ b/arch/arm/mm/tlb-v3.S
@@ -0,0 +1,52 @@
+/*
+ *  linux/arch/arm/mm/tlbv3.S
+ *
+ *  Copyright (C) 1997-2002 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ *  ARM architecture version 3 TLB handling functions.
+ *
+ * Processors: ARM610, ARM710.
+ */
+#include <linux/linkage.h>
+#include <linux/init.h>
+#include <asm/constants.h>
+#include <asm/tlbflush.h>
+#include "proc-macros.S"
+
+        .align  5
+/*
+ *      v3_flush_user_tlb_range(start, end, mm)
+ *
+ *      Invalidate a range of TLB entries in the specified address space.
+ *
+ *      - start - range start address
+ *      - end   - range end address
+ *      - mm    - mm_struct describing address space
+ */
+        .align  5
+ENTRY(v3_flush_user_tlb_range)
+        vma_vm_mm r2, r2
+        act_mm  r3                              @ get current->active_mm
+        teq     r2, r3                          @ == mm ?
+        movne   pc, lr                          @ no, we dont do anything
+ENTRY(v3_flush_kern_tlb_range)
+        bic     r0, r0, #0x0ff
+        bic     r0, r0, #0xf00
+1:      mcr     p15, 0, r0, c6, c0, 0           @ invalidate TLB entry
+        add     r0, r0, #PAGE_SZ
+        cmp     r0, r1
+        blo     1b
+        mov     pc, lr
+
+        __INITDATA
+
+        .type   v3_tlb_fns, #object
+ENTRY(v3_tlb_fns)
+        .long   v3_flush_user_tlb_range
+        .long   v3_flush_kern_tlb_range
+        .long   v3_tlb_flags
+        .size   v3_tlb_fns, . - v3_tlb_fns