vmparam.h revision 1.37 1 1.37 tsutsui /* $NetBSD: vmparam.h,v 1.37 2009/01/10 11:28:47 tsutsui Exp $ */
2 1.6 cgd
3 1.1 briggs /*
4 1.1 briggs * Copyright (c) 1982, 1990 The Regents of the University of California.
5 1.1 briggs * All rights reserved.
6 1.34 agc *
7 1.34 agc * This code is derived from software contributed to Berkeley by
8 1.34 agc * the Systems Programming Group of the University of Utah Computer
9 1.34 agc * Science Department.
10 1.34 agc *
11 1.34 agc * Redistribution and use in source and binary forms, with or without
12 1.34 agc * modification, are permitted provided that the following conditions
13 1.34 agc * are met:
14 1.34 agc * 1. Redistributions of source code must retain the above copyright
15 1.34 agc * notice, this list of conditions and the following disclaimer.
16 1.34 agc * 2. Redistributions in binary form must reproduce the above copyright
17 1.34 agc * notice, this list of conditions and the following disclaimer in the
18 1.34 agc * documentation and/or other materials provided with the distribution.
19 1.34 agc * 3. Neither the name of the University nor the names of its contributors
20 1.34 agc * may be used to endorse or promote products derived from this software
21 1.34 agc * without specific prior written permission.
22 1.34 agc *
23 1.34 agc * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 1.34 agc * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 1.34 agc * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 1.34 agc * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 1.34 agc * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 1.34 agc * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 1.34 agc * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 1.34 agc * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 1.34 agc * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 1.34 agc * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 1.34 agc * SUCH DAMAGE.
34 1.34 agc */
35 1.34 agc /*
36 1.34 agc * Copyright (c) 1988 University of Utah.
37 1.1 briggs *
38 1.1 briggs * This code is derived from software contributed to Berkeley by
39 1.1 briggs * the Systems Programming Group of the University of Utah Computer
40 1.1 briggs * Science Department.
41 1.1 briggs *
42 1.1 briggs * Redistribution and use in source and binary forms, with or without
43 1.1 briggs * modification, are permitted provided that the following conditions
44 1.1 briggs * are met:
45 1.1 briggs * 1. Redistributions of source code must retain the above copyright
46 1.1 briggs * notice, this list of conditions and the following disclaimer.
47 1.1 briggs * 2. Redistributions in binary form must reproduce the above copyright
48 1.1 briggs * notice, this list of conditions and the following disclaimer in the
49 1.1 briggs * documentation and/or other materials provided with the distribution.
50 1.1 briggs * 3. All advertising materials mentioning features or use of this software
51 1.1 briggs * must display the following acknowledgement:
52 1.1 briggs * This product includes software developed by the University of
53 1.1 briggs * California, Berkeley and its contributors.
54 1.1 briggs * 4. Neither the name of the University nor the names of its contributors
55 1.1 briggs * may be used to endorse or promote products derived from this software
56 1.1 briggs * without specific prior written permission.
57 1.1 briggs *
58 1.1 briggs * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
59 1.1 briggs * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
60 1.1 briggs * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
61 1.1 briggs * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
62 1.1 briggs * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
63 1.1 briggs * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
64 1.1 briggs * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
65 1.1 briggs * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
66 1.1 briggs * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
67 1.1 briggs * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
68 1.1 briggs * SUCH DAMAGE.
69 1.1 briggs */
70 1.1 briggs /*-
71 1.1 briggs * Copyright (C) 1993 Allen K. Briggs, Chris P. Caputo,
72 1.1 briggs * Michael L. Finch, Bradley A. Grantham, and
73 1.1 briggs * Lawrence A. Kesteloot
74 1.1 briggs * All rights reserved.
75 1.1 briggs *
76 1.1 briggs * Redistribution and use in source and binary forms, with or without
77 1.1 briggs * modification, are permitted provided that the following conditions
78 1.1 briggs * are met:
79 1.1 briggs * 1. Redistributions of source code must retain the above copyright
80 1.1 briggs * notice, this list of conditions and the following disclaimer.
81 1.1 briggs * 2. Redistributions in binary form must reproduce the above copyright
82 1.1 briggs * notice, this list of conditions and the following disclaimer in the
83 1.1 briggs * documentation and/or other materials provided with the distribution.
84 1.1 briggs * 3. All advertising materials mentioning features or use of this software
85 1.1 briggs * must display the following acknowledgement:
86 1.1 briggs * This product includes software developed by the Alice Group.
87 1.1 briggs * 4. The names of the Alice Group or any of its members may not be used
88 1.1 briggs * to endorse or promote products derived from this software without
89 1.1 briggs * specific prior written permission.
90 1.1 briggs *
91 1.1 briggs * THIS SOFTWARE IS PROVIDED BY THE ALICE GROUP ``AS IS'' AND ANY EXPRESS OR
92 1.1 briggs * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
93 1.1 briggs * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
94 1.1 briggs * IN NO EVENT SHALL THE ALICE GROUP BE LIABLE FOR ANY DIRECT, INDIRECT,
95 1.1 briggs * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
96 1.1 briggs * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
97 1.1 briggs * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
98 1.1 briggs * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
99 1.1 briggs * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
100 1.1 briggs * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
101 1.1 briggs *
102 1.1 briggs */
103 1.1 briggs /*
104 1.1 briggs * from: Utah $Hdr: vmparam.h 1.16 91/01/18$
105 1.1 briggs *
106 1.6 cgd * @(#)vmparam.h 7.3 (Berkeley) 5/7/91
107 1.1 briggs */
108 1.1 briggs
109 1.12 scottr #ifndef _MAC68K_VMPARAM_H_
110 1.12 scottr #define _MAC68K_VMPARAM_H_
111 1.12 scottr
112 1.1 briggs /*
113 1.7 briggs * Machine dependent constants for mac68k -- mostly derived from hp300.
114 1.1 briggs */
115 1.27 thorpej
116 1.27 thorpej /*
117 1.27 thorpej * We use 4K pages on the mac68k. Override the PAGE_* definitions
118 1.27 thorpej * to be compile-time constants.
119 1.27 thorpej */
120 1.27 thorpej #define PAGE_SHIFT 12
121 1.27 thorpej #define PAGE_SIZE (1 << PAGE_SHIFT)
122 1.27 thorpej #define PAGE_MASK (PAGE_SIZE - 1)
123 1.1 briggs
124 1.1 briggs /*
125 1.32 thorpej * USRSTACK is the top (end) of the user stack.
126 1.1 briggs *
127 1.33 thorpej * NOTE: HP300 uses HIGHPAGES == (0x100000/PAGE_SIZE) for HP/UX compatibility.
128 1.7 briggs * Do we care? Obviously not at the moment.
129 1.1 briggs */
130 1.33 thorpej #define USRSTACK (-HIGHPAGES*PAGE_SIZE) /* Start of user stack */
131 1.1 briggs #define BTOPUSRSTACK (0x100000-HIGHPAGES) /* btop(USRSTACK) */
132 1.1 briggs #define P1PAGES 0x100000
133 1.7 briggs #define HIGHPAGES 3 /* UPAGES */
134 1.1 briggs
135 1.1 briggs /*
136 1.1 briggs * Virtual memory related constants, all in bytes
137 1.1 briggs */
138 1.1 briggs #ifndef MAXTSIZ
139 1.7 briggs #define MAXTSIZ (8*1024*1024) /* max text size */
140 1.1 briggs #endif
141 1.1 briggs #ifndef DFLDSIZ
142 1.20 scottr #define DFLDSIZ (32*1024*1024) /* initial data size limit */
143 1.1 briggs #endif
144 1.1 briggs #ifndef MAXDSIZ
145 1.7 briggs #define MAXDSIZ (64*1024*1024) /* max data size */
146 1.1 briggs #endif
147 1.1 briggs #ifndef DFLSSIZ
148 1.19 scottr #define DFLSSIZ (2*1024*1024) /* initial stack size limit */
149 1.1 briggs #endif
150 1.1 briggs #ifndef MAXSSIZ
151 1.19 scottr #define MAXSSIZ (32*1024*1024) /* max stack size */
152 1.1 briggs #endif
153 1.1 briggs
154 1.1 briggs /*
155 1.1 briggs * Sizes of the system and user portions of the system page table.
156 1.1 briggs */
157 1.1 briggs /* SYSPTSIZE IS SILLY; IT SHOULD BE COMPUTED AT BOOT TIME */
158 1.1 briggs #define SYSPTSIZE (2 * NPTEPG) /* 8mb */
159 1.7 briggs #define USRPTSIZE (1 * NPTEPG) /* 4mb */
160 1.1 briggs
161 1.1 briggs /*
162 1.1 briggs * PTEs for mapping user space into the kernel for phyio operations.
163 1.1 briggs * One page is enough to handle 4Mb of simultaneous raw IO operations.
164 1.1 briggs */
165 1.1 briggs #ifndef USRIOSIZE
166 1.1 briggs #define USRIOSIZE (1 * NPTEPG) /* 4mb */
167 1.1 briggs #endif
168 1.1 briggs
169 1.1 briggs /*
170 1.1 briggs * PTEs for system V style shared memory.
171 1.1 briggs * This is basically slop for kmempt which we actually allocate (malloc) from.
172 1.1 briggs */
173 1.1 briggs #ifndef SHMMAXPGS
174 1.1 briggs #define SHMMAXPGS 1024 /* 4mb */
175 1.1 briggs #endif
176 1.1 briggs
177 1.1 briggs /*
178 1.1 briggs * Mach derived constants
179 1.1 briggs */
180 1.1 briggs
181 1.1 briggs /* user/kernel map constants */
182 1.17 scottr #define VM_MIN_ADDRESS ((vaddr_t)0)
183 1.17 scottr #define VM_MAXUSER_ADDRESS ((vaddr_t)(USRSTACK))
184 1.33 thorpej #define VM_MAX_ADDRESS ((vaddr_t)(0-(UPAGES*PAGE_SIZE)))
185 1.17 scottr #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0)
186 1.37 tsutsui #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)(0-PAGE_SIZE*NPTEPG))
187 1.1 briggs
188 1.1 briggs /* virtual sizes (bytes) for various kernel submaps */
189 1.33 thorpej #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE)
190 1.1 briggs
191 1.1 briggs /* # of kernel PT pages (initial only, can grow dynamically) */
192 1.21 scottr #define VM_KERNEL_PT_PAGES ((vsize_t)2) /* XXX: SYSPTSIZE */
193 1.12 scottr
194 1.12 scottr /*
195 1.12 scottr * Constants which control the way the VM system deals with memory segments.
196 1.12 scottr * Most mac68k systems have only 1 physical memory segment, but some have 2.
197 1.14 scottr *
198 1.14 scottr * On the systems that have multiple segments, specifically the IIsi and
199 1.14 scottr * IIci, the optimal configuration is to put the higher-density SIMMs in
200 1.14 scottr * bank B. This is because the on-board video uses main memory in bank A
201 1.14 scottr * for the framebuffer, and a memory controller prevents access during
202 1.14 scottr * video refresh cycles. Even if both banks contain the same amount of
203 1.14 scottr * RAM, a minimum of ~320KB will be subtracted from the amount in bank A
204 1.14 scottr * for the framebuffer (if on-board video is in use).
205 1.12 scottr */
206 1.12 scottr #define VM_PHYSSEG_MAX 2
207 1.14 scottr #define VM_PHYSSEG_STRAT VM_PSTRAT_BIGFIRST
208 1.12 scottr #define VM_PHYSSEG_NOADD
209 1.16 thorpej
210 1.16 thorpej #define VM_NFREELIST 1
211 1.16 thorpej #define VM_FREELIST_DEFAULT 0
212 1.29 thorpej
213 1.30 thorpej #define __HAVE_PMAP_PHYSSEG
214 1.12 scottr
215 1.12 scottr /*
216 1.12 scottr * pmap-specific data stored in the vm_physmem[] array.
217 1.12 scottr */
218 1.12 scottr struct pmap_physseg {
219 1.12 scottr struct pv_entry *pvent; /* pv table for this seg */
220 1.12 scottr char *attrs; /* page attributes for this seg */
221 1.12 scottr };
222 1.12 scottr
223 1.12 scottr #endif /* _MAC68K_VMPARAM_H_ */
224