RTEMS  5.0.0
tte.h
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1 /*
2  * Copyright (c) 2005 Jakub Jermar
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * - Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  * - Redistributions in binary form must reproduce the above copyright
12  * notice, this list of conditions and the following disclaimer in the
13  * documentation and/or other materials provided with the distribution.
14  * - The name of the author may not be used to endorse or promote products
15  * derived from this software without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 
35 #ifndef KERN_sparc64_sun4u_TTE_H_
36 #define KERN_sparc64_sun4u_TTE_H_
37 
38 #define TTE_G (1 << 0)
39 #define TTE_W (1 << 1)
40 #define TTE_P (1 << 2)
41 #define TTE_E (1 << 3)
42 #define TTE_CV (1 << 4)
43 #define TTE_CP (1 << 5)
44 #define TTE_L (1 << 6)
45 
46 #define TTE_V_SHIFT 63
47 #define TTE_SIZE_SHIFT 61
48 
49 #ifndef __ASM__
50 
51 #include <arch/types.h>
52 
53 /* TTE tag's VA_tag field contains bits <63:VA_TAG_PAGE_SHIFT> of the VA */
54 #define VA_TAG_PAGE_SHIFT 22
55 
57 union tte_tag {
58  uint64_t value;
59  struct {
60  unsigned g : 1;
61  unsigned : 2;
62  unsigned context : 13;
63  unsigned : 6;
64  uint64_t va_tag : 42;
65  } __attribute__ ((packed));
66 };
67 
68 typedef union tte_tag tte_tag_t;
69 
71 union tte_data {
72  uint64_t value;
73  struct {
74  unsigned v : 1;
75  unsigned size : 2;
76  unsigned nfo : 1;
77  unsigned ie : 1;
78  unsigned soft2 : 9;
79 #if defined (US)
80  unsigned diag : 9;
81  unsigned pfn : 28;
82 #elif defined (US3)
83  unsigned : 7;
84  unsigned pfn : 30;
85 #endif
86  unsigned soft : 6;
87  unsigned l : 1;
88  unsigned cp : 1;
89  unsigned cv : 1;
90  unsigned e : 1;
91  unsigned p : 1;
92  unsigned w : 1;
93  unsigned g : 1;
94  } __attribute__ ((packed));
95 };
96 
97 typedef union tte_data tte_data_t;
98 
99 #endif /* !def __ASM__ */
100 
101 #endif
102 
unsigned nfo
Definition: tte.h:75
unsigned ie
Definition: tte.h:76
unsigned g
Definition: tte.h:60
unsigned e
Definition: tte.h:89
unsigned p
Definition: tte.h:90
Definition: jffs2.h:95
unsigned soft
Definition: tte.h:85
unsigned cv
Definition: tte.h:88
unsigned soft2
Definition: tte.h:78
unsigned w
Definition: tte.h:92
Definition: tte.h:57
Definition: tte.h:71
unsigned cp
Definition: tte.h:87
unsigned l
Definition: tte.h:86
unsigned context
Definition: tte.h:62
unsigned g
Definition: tte.h:93
unsigned size
Definition: tte.h:74
uint64_t va_tag
Definition: tte.h:64
unsigned v
Definition: tte.h:73