microblaze_mmu_v2: Update tlb.h and tlbflush.h

Signed-off-by: Michal Simek <monstr@monstr.eu>

1 files changed, 48 insertions, 0 deletions

diff --git a/arch/microblaze/include/asm/tlbflush.h b/arch/microblaze/include/asm/tlbflush.h
index d7fe7629001b..eb31a0e8a772 100644
--- a/arch/microblaze/include/asm/tlbflush.h
+++ b/arch/microblaze/include/asm/tlbflush.h
@@ -1,4 +1,6 @@
 /*
+ * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
+ * Copyright (C) 2008-2009 PetaLogix
  * Copyright (C) 2006 Atmark Techno, Inc.
  *
  * This file is subject to the terms and conditions of the GNU General Public
@@ -9,6 +11,50 @@
 #ifndef _ASM_MICROBLAZE_TLBFLUSH_H
 #define _ASM_MICROBLAZE_TLBFLUSH_H
 
+#ifdef CONFIG_MMU
+
+#include <linux/sched.h>
+#include <linux/threads.h>
+#include <asm/processor.h>      /* For TASK_SIZE */
+#include <asm/mmu.h>
+#include <asm/page.h>
+#include <asm/pgalloc.h>
+
+extern void _tlbie(unsigned long address);
+extern void _tlbia(void);
+
+#define __tlbia()       _tlbia()
+
+static inline void local_flush_tlb_all(void)
+        { __tlbia(); }
+static inline void local_flush_tlb_mm(struct mm_struct *mm)
+        { __tlbia(); }
+static inline void local_flush_tlb_page(struct vm_area_struct *vma,
+                                unsigned long vmaddr)
+        { _tlbie(vmaddr); }
+static inline void local_flush_tlb_range(struct vm_area_struct *vma,
+                unsigned long start, unsigned long end)
+        { __tlbia(); }
+
+#define flush_tlb_kernel_range(start, end)      do { } while (0)
+
+#define update_mmu_cache(vma, addr, pte)        do { } while (0)
+
+#define flush_tlb_all local_flush_tlb_all
+#define flush_tlb_mm local_flush_tlb_mm
+#define flush_tlb_page local_flush_tlb_page
+#define flush_tlb_range local_flush_tlb_range
+
+/*
+ * This is called in munmap when we have freed up some page-table
+ * pages.  We don't need to do anything here, there's nothing special
+ * about our page-table pages.  -- paulus
+ */
+static inline void flush_tlb_pgtables(struct mm_struct *mm,
+        unsigned long start, unsigned long end) { }
+
+#else /* CONFIG_MMU */
+
 #define flush_tlb()                             BUG()
 #define flush_tlb_all()                         BUG()
 #define flush_tlb_mm(mm)                        BUG()
@@ -17,4 +63,6 @@
 #define flush_tlb_pgtables(mm, start, end)      BUG()
 #define flush_tlb_kernel_range(start, end)      BUG()
 
+#endif /* CONFIG_MMU */
+
 #endif /* _ASM_MICROBLAZE_TLBFLUSH_H */