1 files changed, 80 insertions, 0 deletions
diff --git a/arch/mn10300/include/asm/tlbflush.h b/arch/mn10300/include/asm/tlbflush.h
new file mode 100644
index 0000000..e023986
--- /dev/null
+++ b/arch/mn10300/include/asm/tlbflush.h
@@ -0,0 +1,80 @@
+/* MN10300 TLB flushing functions
+ *
+ * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public Licence
+ * as published by the Free Software Foundation; either version
+ * 2 of the Licence, or (at your option) any later version.
+ */
+#ifndef _ASM_TLBFLUSH_H
+#define _ASM_TLBFLUSH_H
+
+#include <asm/processor.h>
+
+#define __flush_tlb()						\
+do {								\
+	int w;							\
+	__asm__ __volatile__					\
+		("	mov %1,%0		\n"		\
+		 "	or %2,%0		\n"		\
+		 "	mov %0,%1		\n"		\
+		 : "=d"(w)					\
+		 : "m"(MMUCTR), "i"(MMUCTR_IIV|MMUCTR_DIV)	\
+		 : "memory"					\
+		 );						\
+} while (0)
+
+#define __flush_tlb_all() __flush_tlb()
+#define __flush_tlb_one(addr) __flush_tlb()
+
+
+/*
+ * TLB flushing:
+ *
+ *  - flush_tlb() flushes the current mm struct TLBs
+ *  - flush_tlb_all() flushes all processes TLBs
+ *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
+ *  - flush_tlb_page(vma, vmaddr) flushes one page
+ *  - flush_tlb_range(mm, start, end) flushes a range of pages
+ *  - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
+ */
+#define flush_tlb_all()				\
+do {						\
+	preempt_disable();			\
+	__flush_tlb_all();			\
+	preempt_enable();			\
+} while (0)
+
+#define flush_tlb_mm(mm)			\
+do {						\
+	preempt_disable();			\
+	__flush_tlb_all();			\
+	preempt_enable();			\
+} while (0)
+
+#define flush_tlb_range(vma, start, end)			\
+do {								\
+	unsigned long __s __attribute__((unused)) = (start);	\
+	unsigned long __e __attribute__((unused)) = (end);	\
+	preempt_disable();					\
+	__flush_tlb_all();					\
+	preempt_enable();					\
+} while (0)
+
+
+#define __flush_tlb_global()			flush_tlb_all()
+#define flush_tlb()				flush_tlb_all()
+#define flush_tlb_kernel_range(start, end)			\
+do {								\
+	unsigned long __s __attribute__((unused)) = (start);	\
+	unsigned long __e __attribute__((unused)) = (end);	\
+	flush_tlb_all();					\
+} while (0)
+
+extern void flush_tlb_page(struct vm_area_struct *vma, unsigned long addr);
+
+#define flush_tlb_pgtables(mm, start, end)	do {} while (0)
+
+#endif /* _ASM_TLBFLUSH_H */