summaryrefslogtreecommitdiff
path: root/sys/arch/mips/include/vmparam.h
blob: 6b27f3ae7e8c3f015f7a551163003a01f7695149 (plain)
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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
/*	$NetBSD: vmparam.h,v 1.33 2003/08/07 16:28:29 agc Exp $	*/

/*
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department and Ralph Campbell.
 *
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 * from: Utah Hdr: vmparam.h 1.16 91/01/18
 *
 *	@(#)vmparam.h	8.2 (Berkeley) 4/22/94
 */
/*
 * Copyright (c) 1988 University of Utah.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department and Ralph Campbell.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 *
 * from: Utah Hdr: vmparam.h 1.16 91/01/18
 *
 *	@(#)vmparam.h	8.2 (Berkeley) 4/22/94
 */

#ifndef _MIPS_VMPARAM_H_
#define	_MIPS_VMPARAM_H_

/*
 * Machine dependent VM constants for MIPS.
 */

/*
 * We use a 4K page on MIPS systems.  Override PAGE_* definitions
 * to compile-time constants.
 */
#define	PAGE_SHIFT	12
#define	PAGE_SIZE	(1 << PAGE_SHIFT)
#define	PAGE_MASK	(PAGE_SIZE - 1)

/*
 * USRSTACK is the top (end) of the user stack.
 *
 * USRSTACK needs to start a little below 0x8000000 because the R8000
 * and some QED CPUs perform some virtual address checks before the
 * offset is calculated.
 */
#define	USRSTACK	0x7ffff000		/* Start of user stack */

/* alignment requirement for u-area space in bytes */
#define	USPACE_ALIGN	USPACE

/*
 * Virtual memory related constants, all in bytes
 */
#ifndef MAXTSIZ
#define	MAXTSIZ		(64*1024*1024)		/* max text size */
#endif
#ifndef DFLDSIZ
#define	DFLDSIZ		(128*1024*1024)		/* initial data size limit */
#endif
#ifndef MAXDSIZ
#define	MAXDSIZ		(512*1024*1024)		/* max data size */
#endif
#ifndef	DFLSSIZ
#define	DFLSSIZ		(2*1024*1024)		/* initial stack size limit */
#endif
#ifndef	MAXSSIZ
#define	MAXSSIZ		(32*1024*1024)		/* max stack size */
#endif

/*
 * PTEs for mapping user space into the kernel for phyio operations.
 * The default PTE number is enough to cover 8 disks * MAXBSIZE.
 */
#ifndef USRIOSIZE
#define USRIOSIZE	(MAXBSIZE/PAGE_SIZE * 8)
#endif

/*
 * PTEs for system V style shared memory.
 * This is basically slop for kmempt which we actually allocate (malloc) from.
 */
#ifndef SHMMAXPGS
#define SHMMAXPGS	1024		/* 4mb */
#endif

/*
 * Mach derived constants
 */

/* user/kernel map constants */
#define VM_MIN_ADDRESS		((vaddr_t)0x00000000)
#define VM_MAXUSER_ADDRESS	((vaddr_t)0x80000000)
#define VM_MAX_ADDRESS		((vaddr_t)0x80000000)
#define VM_MIN_KERNEL_ADDRESS	((vaddr_t)0xC0000000)
#ifdef ENABLE_MIPS_TX3900
#define VM_MAX_KERNEL_ADDRESS	((vaddr_t)0xFF000000)
#else
#define VM_MAX_KERNEL_ADDRESS	((vaddr_t)0xFFFFC000)
#endif

/* virtual sizes (bytes) for various kernel submaps */
#define VM_PHYS_SIZE		(USRIOSIZE*PAGE_SIZE)

/* VM_PHYSSEG_MAX defined by platform-dependent code. */
#define	VM_PHYSSEG_STRAT	VM_PSTRAT_BSEARCH
#define	VM_PHYSSEG_NOADD	/* can add RAM after vm_mem_init */

#define	__HAVE_PMAP_PHYSSEG

/*
 * pmap-specific data stored in the vm_physmem[] array.
 */
struct pmap_physseg {
	struct pv_entry *pvent;		/* pv table for this seg */
	char *attrs;			/* page attributes for this seg */
};

#endif /* ! _MIPS_VMPARAM_H_ */