1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
|
#-
# Copyright (c) 2010 Nathan Whitehorn
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
#
#include <sys/param.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/systm.h>
#include <vm/vm.h>
#include <vm/vm_page.h>
#include <machine/mmuvar.h>
/**
* MOEA64 kobj methods for 64-bit Book-S page table
* manipulation routines used, for example, by hypervisors.
*/
INTERFACE moea64;
/**
* Copy ref/changed bits from PTE referenced by _pt_cookie to _pvo_pt.
*/
METHOD void pte_synch {
mmu_t _mmu;
uintptr_t _pt_cookie;
struct lpte *_pvo_pt;
};
/**
* Clear bits ptebit (a mask) from the low word of the PTE referenced by
* _pt_cookie. Note that _pvo_pt is for reference use only -- the bit should
* NOT be cleared there.
*/
METHOD void pte_clear {
mmu_t _mmu;
uintptr_t _pt_cookie;
struct lpte *_pvo_pt;
uint64_t _vpn;
uint64_t _ptebit;
};
/**
* Invalidate the PTE referenced by _pt_cookie, synchronizing its validity
* and ref/changed bits after completion.
*/
METHOD void pte_unset {
mmu_t _mmu;
uintptr_t _pt_cookie;
struct lpte *_pvo_pt;
uint64_t _vpn;
};
/**
* Update the PTE referenced by _pt_cookie with the values in _pvo_pt,
* making sure that the values of ref/changed bits are preserved and
* synchronized back to _pvo_pt.
*/
METHOD void pte_change {
mmu_t _mmu;
uintptr_t _pt_cookie;
struct lpte *_pvo_pt;
uint64_t _vpn;
};
/**
* Insert the PTE _pvo_pt into the PTEG group _ptegidx, returning the index
* of the PTE in its group at completion, or -1 if no slots were free. Must
* not replace PTEs marked LPTE_WIRED or LPTE_LOCKED, and must set LPTE_HID
* and LPTE_VALID appropriately in _pvo_pt.
*/
METHOD int pte_insert {
mmu_t _mmu;
u_int _ptegidx;
struct lpte *_pvo_pt;
};
/**
* Return the page table reference cookie corresponding to _pvo, or -1 if
* the _pvo is not currently in the page table.
*/
METHOD uintptr_t pvo_to_pte {
mmu_t _mmu;
const struct pvo_entry *_pvo;
};
|
