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-rw-r--r--include/asm-mn10300/tlbflush.h80
1 files changed, 80 insertions, 0 deletions
diff --git a/include/asm-mn10300/tlbflush.h b/include/asm-mn10300/tlbflush.h
new file mode 100644
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+++ b/include/asm-mn10300/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 */
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