xref: /openbmc/linux/arch/arc/include/asm/tlb.h (revision 7b6d864b)
1 /*
2  * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
3  *
4  * This program is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License version 2 as
6  * published by the Free Software Foundation.
7  */
8 
9 #ifndef _ASM_ARC_TLB_H
10 #define _ASM_ARC_TLB_H
11 
12 #define tlb_flush(tlb)				\
13 do {						\
14 	if (tlb->fullmm)			\
15 		flush_tlb_mm((tlb)->mm);	\
16 } while (0)
17 
18 /*
19  * This pair is called at time of munmap/exit to flush cache and TLB entries
20  * for mappings being torn down.
21  * 1) cache-flush part -implemented via tlb_start_vma( ) for VIPT aliasing D$
22  * 2) tlb-flush part - implemted via tlb_end_vma( ) flushes the TLB range
23  *
24  * Note, read http://lkml.org/lkml/2004/1/15/6
25  */
26 #ifndef CONFIG_ARC_CACHE_VIPT_ALIASING
27 #define tlb_start_vma(tlb, vma)
28 #else
29 #define tlb_start_vma(tlb, vma)						\
30 do {									\
31 	if (!tlb->fullmm)						\
32 		flush_cache_range(vma, vma->vm_start, vma->vm_end);	\
33 } while(0)
34 #endif
35 
36 #define tlb_end_vma(tlb, vma)						\
37 do {									\
38 	if (!tlb->fullmm)						\
39 		flush_tlb_range(vma, vma->vm_start, vma->vm_end);	\
40 } while (0)
41 
42 #define __tlb_remove_tlb_entry(tlb, ptep, address)
43 
44 #include <linux/pagemap.h>
45 #include <asm-generic/tlb.h>
46 
47 #endif /* _ASM_ARC_TLB_H */
48