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
|
/* $OpenBSD: param.h,v 1.4 2004/06/13 21:49:13 niklas Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* 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.
*
* @(#)param.h 5.8 (Berkeley) 6/28/91
*/
#ifdef _KERNEL
#ifdef _LOCORE
#include <machine/psl.h>
#else
#include <machine/cpu.h>
#endif
#endif
#define _MACHINE amd64
#define MACHINE "amd64"
#define _MACHINE_ARCH amd64
#define MACHINE_ARCH "amd64"
#define MID_MACHINE MID_AMD64
/*
* Round p (pointer or byte index) up to a correctly-aligned value
* for all data types (int, long, ...). The result is u_long and
* must be cast to any desired pointer type.
*
* ALIGNED_POINTER is a boolean macro that checks whether an address
* is valid to fetch data elements of type t from on this architecture.
* This does not reflect the optimal alignment, just the possibility
* (within reasonable limits).
*
*/
#define ALIGNBYTES (sizeof(long) - 1)
#define ALIGN(p) (((u_long)(p) + ALIGNBYTES) &~ALIGNBYTES)
#define ALIGNED_POINTER(p,t) 1
#define PGSHIFT 12 /* LOG2(NBPG) */
#define NBPG (1 << PGSHIFT) /* bytes/page */
#define PGOFSET (NBPG-1) /* byte offset into page */
#define PAGE_SHIFT 12
#define PAGE_SIZE (1 << PAGE_SHIFT)
#define PAGE_MASK (PAGE_SIZE - 1)
#define NPTEPG (NBPG/(sizeof (pt_entry_t)))
#define KERNBASE 0xffffffff80000000 /* start of kernel virtual space */
#define KERNTEXTOFF (KERNBASE+0x100000) /* start of kernel text */
#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
#define KERNTEXTOFF_HI 0xffffffff
#define KERNTEXTOFF_LO 0x80100000
#define KERNBASE_HI 0xffffffff
#define KERNBASE_LO 0x80000000
#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
#define DEV_BSIZE (1 << DEV_BSHIFT)
#define BLKDEV_IOSIZE 2048
#ifndef MAXPHYS
#define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
#endif
#define SSIZE 1 /* initial stack size/NBPG */
#define SINCR 1 /* increment of stack/NBPG */
#define UPAGES 5 /* pages of u-area */
#define USPACE (UPAGES * NBPG) /* total size of u-area */
#ifndef MSGBUFSIZE
#define MSGBUFSIZE 4*NBPG /* default message buffer size */
#endif
/*
* Constants related to network buffer management.
* MCLBYTES must be no larger than NBPG (the software page size), and,
* on machines that exchange pages of input or output buffers with mbuf
* clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
* of the hardware page size.
*/
#define MSIZE 256 /* size of an mbuf */
#define MCLSHIFT 11 /* convert bytes to m_buf clusters */
#define MCLBYTES (1 << MCLSHIFT) /* size of a m_buf cluster */
#define MCLOFSET (MCLBYTES - 1) /* offset within a m_buf cluster */
#define NMBCLUSTERS 6144 /* map size, max cluster allocation */
/*
* Minimum and maximum sizes of the kernel malloc arena in PAGE_SIZE-sized
* logical pages.
*/
#define NKMEMPAGES_MIN_DEFAULT ((8 * 1024 * 1024) >> PAGE_SHIFT)
#define NKMEMPAGES_MAX_DEFAULT ((128 * 1024 * 1024) >> PAGE_SHIFT)
/* pages ("clicks") to disk blocks */
#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
/* bytes to pages */
#define ctob(x) ((x) << PGSHIFT)
#define btoc(x) (((x) + PGOFSET) >> PGSHIFT)
/* bytes to disk blocks */
#define dbtob(x) ((x) << DEV_BSHIFT)
#define btodb(x) ((x) >> DEV_BSHIFT)
/*
* Map a ``block device block'' to a file system block.
* This should be device dependent, and should use the bsize
* field from the disk label.
* For now though just use DEV_BSIZE.
*/
#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE / DEV_BSIZE))
/*
* XXXfvdl the PD* stuff is different from i386.
*/
/*
* Mach derived conversion macros
*/
#define x86_round_pdr(x) \
((((unsigned long)(x)) + (NBPD_L2 - 1)) & ~(NBPD_L2 - 1))
#define x86_trunc_pdr(x) ((unsigned long)(x) & ~(NBPD_L2 - 1))
#define x86_btod(x) ((unsigned long)(x) >> L2_SHIFT)
#define x86_dtob(x) ((unsigned long)(x) << L2_SHIFT)
#define x86_round_page(x) ((((unsigned long)(x)) + PGOFSET) & ~PGOFSET)
#define x86_trunc_page(x) ((unsigned long)(x) & ~PGOFSET)
#define x86_btop(x) ((unsigned long)(x) >> PGSHIFT)
#define x86_ptob(x) ((unsigned long)(x) << PGSHIFT)
#define btop(x) x86_btop(x)
#define ptob(x) x86_ptob(x)
#define round_pdr(x) x86_round_pdr(x)
|
