pte.h revision 1.5 1 1.1 briggs /*
2 1.1 briggs * Copyright (c) 1988 University of Utah.
3 1.1 briggs * Copyright (c) 1982, 1990 The Regents of the University of California.
4 1.1 briggs * All rights reserved.
5 1.1 briggs *
6 1.1 briggs * This code is derived from software contributed to Berkeley by
7 1.1 briggs * the Systems Programming Group of the University of Utah Computer
8 1.1 briggs * Science Department.
9 1.1 briggs *
10 1.1 briggs * Redistribution and use in source and binary forms, with or without
11 1.1 briggs * modification, are permitted provided that the following conditions
12 1.1 briggs * are met:
13 1.1 briggs * 1. Redistributions of source code must retain the above copyright
14 1.1 briggs * notice, this list of conditions and the following disclaimer.
15 1.1 briggs * 2. Redistributions in binary form must reproduce the above copyright
16 1.1 briggs * notice, this list of conditions and the following disclaimer in the
17 1.1 briggs * documentation and/or other materials provided with the distribution.
18 1.1 briggs * 3. All advertising materials mentioning features or use of this software
19 1.1 briggs * must display the following acknowledgement:
20 1.1 briggs * This product includes software developed by the University of
21 1.1 briggs * California, Berkeley and its contributors.
22 1.1 briggs * 4. Neither the name of the University nor the names of its contributors
23 1.1 briggs * may be used to endorse or promote products derived from this software
24 1.1 briggs * without specific prior written permission.
25 1.1 briggs *
26 1.1 briggs * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27 1.1 briggs * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28 1.1 briggs * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29 1.1 briggs * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30 1.1 briggs * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31 1.1 briggs * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32 1.1 briggs * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33 1.1 briggs * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34 1.1 briggs * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35 1.1 briggs * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36 1.1 briggs * SUCH DAMAGE.
37 1.1 briggs */
38 1.1 briggs /*-
39 1.1 briggs * Copyright (C) 1993 Allen K. Briggs, Chris P. Caputo,
40 1.1 briggs * Michael L. Finch, Bradley A. Grantham, and
41 1.1 briggs * Lawrence A. Kesteloot
42 1.1 briggs * All rights reserved.
43 1.1 briggs *
44 1.1 briggs * Redistribution and use in source and binary forms, with or without
45 1.1 briggs * modification, are permitted provided that the following conditions
46 1.1 briggs * are met:
47 1.1 briggs * 1. Redistributions of source code must retain the above copyright
48 1.1 briggs * notice, this list of conditions and the following disclaimer.
49 1.1 briggs * 2. Redistributions in binary form must reproduce the above copyright
50 1.1 briggs * notice, this list of conditions and the following disclaimer in the
51 1.1 briggs * documentation and/or other materials provided with the distribution.
52 1.1 briggs * 3. All advertising materials mentioning features or use of this software
53 1.1 briggs * must display the following acknowledgement:
54 1.1 briggs * This product includes software developed by the Alice Group.
55 1.1 briggs * 4. The names of the Alice Group or any of its members may not be used
56 1.1 briggs * to endorse or promote products derived from this software without
57 1.1 briggs * specific prior written permission.
58 1.1 briggs *
59 1.1 briggs * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``AS IS'' AND ANY EXPRESS OR
60 1.1 briggs * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
61 1.1 briggs * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
62 1.1 briggs * IN NO EVENT SHALL THE ALICE GROUP BE LIABLE FOR ANY DIRECT, INDIRECT,
63 1.1 briggs * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
64 1.1 briggs * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
65 1.1 briggs * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
66 1.1 briggs * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
67 1.1 briggs * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
68 1.1 briggs * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
69 1.1 briggs *
70 1.1 briggs */
71 1.1 briggs /*
72 1.1 briggs * from: Utah $Hdr: pte.h 1.11 89/09/03$
73 1.1 briggs *
74 1.2 briggs * from: @(#)pte.h 7.3 (Berkeley) 5/8/91
75 1.5 briggs * $Id: pte.h,v 1.5 1994/06/26 13:23:01 briggs Exp $
76 1.1 briggs */
77 1.1 briggs
78 1.4 briggs #ifndef _MACHINE_PTE_H_
79 1.4 briggs #define _MACHINE_PTE_H_ 1
80 1.4 briggs
81 1.1 briggs /*
82 1.1 briggs * Mac hardware segment/page table entries
83 1.1 briggs */
84 1.1 briggs
85 1.1 briggs struct ste {
86 1.1 briggs unsigned int sg_pfnum:20; /* page table frame number */
87 1.1 briggs unsigned int :8; /* reserved at 0 */
88 1.1 briggs unsigned int :1; /* reserved at 1 */
89 1.1 briggs unsigned int sg_prot:1; /* write protect bit */
90 1.1 briggs unsigned int sg_v:2; /* valid bits */
91 1.1 briggs };
92 1.1 briggs
93 1.1 briggs struct pte {
94 1.1 briggs unsigned int pg_pfnum:20; /* page frame number or 0 */
95 1.1 briggs unsigned int :3;
96 1.1 briggs unsigned int pg_w:1; /* is wired */
97 1.1 briggs unsigned int :1; /* reserved at zero */
98 1.1 briggs unsigned int pg_ci:1; /* cache inhibit bit */
99 1.4 briggs unsigned int pg_cm1:1; /* cache mode, lsb (68040) */
100 1.1 briggs unsigned int pg_m:1; /* hardware modified (dirty) bit */
101 1.1 briggs unsigned int pg_u:1; /* hardware used (reference) bit */
102 1.1 briggs unsigned int pg_prot:1; /* write protect bit */
103 1.1 briggs unsigned int pg_v:2; /* valid bit */
104 1.1 briggs };
105 1.1 briggs
106 1.1 briggs typedef struct ste st_entry_t; /* segment table entry */
107 1.1 briggs typedef struct pte pt_entry_t; /* Mach page table entry */
108 1.1 briggs
109 1.1 briggs #define PT_ENTRY_NULL ((pt_entry_t *) 0)
110 1.1 briggs #define ST_ENTRY_NULL ((st_entry_t *) 0)
111 1.1 briggs
112 1.1 briggs #define SG_V 0x00000002 /* segment is valid */
113 1.1 briggs #define SG_NV 0x00000000
114 1.1 briggs #define SG_PROT 0x00000004 /* access protection mask */
115 1.1 briggs #define SG_RO 0x00000004
116 1.1 briggs #define SG_RW 0x00000000
117 1.1 briggs #define SG_FRAME 0xfffff000
118 1.4 briggs #define SG_IMASK1 0xfe000000
119 1.4 briggs #define SG_IMASK2 0x01fc0000
120 1.4 briggs #define SG_040IMASK 0xfffc0000
121 1.4 briggs #define SG_040PMASK 0x0003f000
122 1.4 briggs #define SG_ISHIFT1 25
123 1.4 briggs #define SG_040ISHIFT 18
124 1.1 briggs #define SG_IMASK 0xffc00000
125 1.1 briggs #define SG_PMASK 0x003ff000
126 1.1 briggs #define SG_ISHIFT 22
127 1.1 briggs #define SG_PSHIFT 12
128 1.1 briggs
129 1.1 briggs #define PG_V 0x00000001
130 1.1 briggs #define PG_NV 0x00000000
131 1.1 briggs #define PG_PROT 0x00000004
132 1.1 briggs #define PG_U 0x00000008
133 1.1 briggs #define PG_M 0x00000010
134 1.1 briggs #define PG_W 0x00000100
135 1.1 briggs #define PG_RO 0x00000004
136 1.1 briggs #define PG_RW 0x00000000
137 1.4 briggs #define PG_CI 0x00000040
138 1.5 briggs #define PG_CCB 0x00000020
139 1.4 briggs #define PG_CIN 0x00000060
140 1.1 briggs #define PG_FRAME 0xfffff000
141 1.1 briggs #define PG_SHIFT 12
142 1.1 briggs #define PG_PFNUM(x) (((x) & PG_FRAME) >> PG_SHIFT)
143 1.1 briggs
144 1.4 briggs #define MAC_040RTSIZE 512 /* root (level 1) table size */
145 1.4 briggs #define MAC_040STSIZE 512 /* segment (level 2) table size */
146 1.4 briggs #define MAC_040PTSIZE 128 /* page (level 3) table size */
147 1.1 briggs #define MAC_STSIZE MAC_PAGE_SIZE /* segment table size */
148 1.1 briggs #define MAC_MAX_PTSIZE MAC_SEG_SIZE /* max size of UPT */
149 1.1 briggs #define MAC_MAX_KPTSIZE 0x100000 /* max memory to allocate to KPT */
150 1.3 briggs #define MAC_PTBASE 0x60100000 /* UPT map base address */
151 1.1 briggs #define MAC_PTMAXSIZE 0x70000000 /* UPT map maximum size */
152 1.1 briggs
153 1.1 briggs /*
154 1.1 briggs * Kernel virtual address to page table entry and to physical address.
155 1.1 briggs */
156 1.1 briggs #define kvtopte(va) \
157 1.1 briggs (&Sysmap[((unsigned)(va) - VM_MIN_KERNEL_ADDRESS) >> PGSHIFT])
158 1.1 briggs #define kvtoste(va) \
159 1.1 briggs (&Sysseg[((unsigned)(va) - VM_MIN_KERNEL_ADDRESS) >> SEGSHIFT])
160 1.1 briggs #define ptetokv(pt) \
161 1.1 briggs ((((pt_entry_t *)(pt) - Sysmap) << PGSHIFT) + VM_MIN_KERNEL_ADDRESS)
162 1.1 briggs #define kvtophys(va) \
163 1.1 briggs ((kvtopte(va)->pg_pfnum << PGSHIFT) | ((int)(va) & PGOFSET))
164 1.4 briggs
165 1.4 briggs #endif /* _MACHINE_PTE_H_ */
166