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
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/* $OpenBSD: pte.h,v 1.10 2011/03/23 16:54:34 pirofti Exp $ */
/* $NetBSD: pte.h,v 1.26 1999/04/09 00:38:11 thorpej Exp $ */
/*-
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
* NASA Ames Research Center.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
#ifndef _MACHINE_PTE_H_
#define _MACHINE_PTE_H_
/*
* Alpha page table entry.
* Things which are in the VMS PALcode but not in the OSF PALcode
* are marked with "(VMS)".
*
* This information derived from pp. (II) 3-3 - (II) 3-6 and
* (III) 3-3 - (III) 3-5 of the "Alpha Architecture Reference Manual" by
* Richard L. Sites.
*/
/*
* Alpha Page Table Entry
*/
#include <machine/alpha_cpu.h>
typedef alpha_pt_entry_t pt_entry_t;
#define PT_ENTRY_NULL ((pt_entry_t *) 0)
#define PTESHIFT 3 /* pte size == 1 << PTESHIFT */
#define PG_V ALPHA_PTE_VALID
#define PG_NV 0
#define PG_FOR ALPHA_PTE_FAULT_ON_READ
#define PG_FOW ALPHA_PTE_FAULT_ON_WRITE
#define PG_FOE ALPHA_PTE_FAULT_ON_EXECUTE
#define PG_ASM ALPHA_PTE_ASM
#define PG_GH ALPHA_PTE_GRANULARITY
#define PG_KRE ALPHA_PTE_KR
#define PG_URE ALPHA_PTE_UR
#define PG_KWE ALPHA_PTE_KW
#define PG_UWE ALPHA_PTE_UW
#define PG_PROT ALPHA_PTE_PROT
#define PG_RSVD 0x000000000000cc80 /* Reserved for hardware */
#define PG_WIRED 0x0000000000010000 /* Wired. [SOFTWARE] */
#define PG_PVLIST 0x0000000000020000 /* on pv list [SOFTWARE] */
#define PG_EXEC 0x0000000000040000 /* execute perms [SOFTWARE] */
#define PG_FRAME ALPHA_PTE_RAME
#define PG_SHIFT 32
#define PG_PFNUM(x) ALPHA_PTE_TO_PFN(x)
/*
* These are the PALcode PTE bits that we care about when checking to see
* if a PTE has changed in such a way as to require a TBI.
*/
#define PG_PALCODE(x) ((x) & ALPHA_PTE_PALCODE)
#if defined(_KERNEL) || defined(__KVM_ALPHA_PRIVATE)
#define NPTEPG_SHIFT (PAGE_SHIFT - PTESHIFT)
#define NPTEPG (1L << NPTEPG_SHIFT)
#define PTEMASK (NPTEPG - 1)
#define l3pte_index(va) \
(((vaddr_t)(va) >> PAGE_SHIFT) & PTEMASK)
#define l2pte_index(va) \
(((vaddr_t)(va) >> (PAGE_SHIFT + NPTEPG_SHIFT)) & PTEMASK)
#define l1pte_index(va) \
(((vaddr_t)(va) >> (PAGE_SHIFT + 2 * NPTEPG_SHIFT)) & PTEMASK)
#define VPT_INDEX(va) \
(((vaddr_t)(va) >> PAGE_SHIFT) & ((1 << 3 * NPTEPG_SHIFT) - 1))
/* Space mapped by one level 1 PTE */
#define ALPHA_L1SEG_SIZE (1L << ((2 * NPTEPG_SHIFT) + PAGE_SHIFT))
/* Space mapped by one level 2 PTE */
#define ALPHA_L2SEG_SIZE (1L << (NPTEPG_SHIFT + PAGE_SHIFT))
#define alpha_trunc_l1seg(x) (((u_long)(x)) & ~(ALPHA_L1SEG_SIZE-1))
#define alpha_trunc_l2seg(x) (((u_long)(x)) & ~(ALPHA_L2SEG_SIZE-1))
#endif /* _KERNEL || __KVM_ALPHA_PRIVATE */
#ifdef _KERNEL
extern pt_entry_t *kernel_lev1map; /* kernel level 1 page table */
#endif /* _KERNEL */
#endif /* ! _MACHINE_PTE_H_ */
|
