1 /*
2  * Copyright (C) 2008-2009 Michal Simek <monstr@monstr.eu>
3  * Copyright (C) 2008-2009 PetaLogix
4  * Copyright (C) 2006 Atmark Techno, Inc.
5  *
6  * This file is subject to the terms and conditions of the GNU General Public
7  * License. See the file "COPYING" in the main directory of this archive
8  * for more details.
9  */
10 
11 #ifndef _ASM_MICROBLAZE_TLBFLUSH_H
12 #define _ASM_MICROBLAZE_TLBFLUSH_H
13 
14 #ifdef CONFIG_MMU
15 
16 #include <linux/sched.h>
17 #include <linux/threads.h>
18 #include <asm/processor.h>	/* For TASK_SIZE */
19 #include <asm/mmu.h>
20 #include <asm/page.h>
21 #include <asm/pgalloc.h>
22 
23 extern void _tlbie(unsigned long address);
24 extern void _tlbia(void);
25 
26 #define __tlbia()	{ preempt_disable(); _tlbia(); preempt_enable(); }
27 #define __tlbie(x)	{ _tlbie(x); }
28 
29 static inline void local_flush_tlb_all(void)
30 	{ __tlbia(); }
31 static inline void local_flush_tlb_mm(struct mm_struct *mm)
32 	{ __tlbia(); }
33 static inline void local_flush_tlb_page(struct vm_area_struct *vma,
34 				unsigned long vmaddr)
35 	{ __tlbie(vmaddr); }
36 static inline void local_flush_tlb_range(struct vm_area_struct *vma,
37 		unsigned long start, unsigned long end)
38 	{ __tlbia(); }
39 
40 #define flush_tlb_kernel_range(start, end)	do { } while (0)
41 
42 #define update_mmu_cache(vma, addr, ptep)	do { } while (0)
43 
44 #define flush_tlb_all local_flush_tlb_all
45 #define flush_tlb_mm local_flush_tlb_mm
46 #define flush_tlb_page local_flush_tlb_page
47 #define flush_tlb_range local_flush_tlb_range
48 
49 /*
50  * This is called in munmap when we have freed up some page-table
51  * pages.  We don't need to do anything here, there's nothing special
52  * about our page-table pages.  -- paulus
53  */
54 static inline void flush_tlb_pgtables(struct mm_struct *mm,
55 	unsigned long start, unsigned long end) { }
56 
57 #else /* CONFIG_MMU */
58 
59 #define flush_tlb()				BUG()
60 #define flush_tlb_all()				BUG()
61 #define flush_tlb_mm(mm)			BUG()
62 #define flush_tlb_page(vma, addr)		BUG()
63 #define flush_tlb_range(mm, start, end)		BUG()
64 #define flush_tlb_pgtables(mm, start, end)	BUG()
65 #define flush_tlb_kernel_range(start, end)	BUG()
66 
67 #endif /* CONFIG_MMU */
68 
69 #endif /* _ASM_MICROBLAZE_TLBFLUSH_H */
70