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
|
/* $OpenBSD: param.h,v 1.4 1996/08/26 11:12:03 pefo Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* 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. 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: machparam.h 1.11 89/08/14
* from: @(#)param.h 8.1 (Berkeley) 6/10/93
*/
/*
* Machine dependent constants for ARC BIOS MIPS machines:
* Acer Labs PICA_61
* Deskstation rPC44
* Deskstation Tyne
* Etc
*/
#define MACHINE "arc"
#define MACHINE_ARCH "mips"
#define MID_MACHINE MID_PMAX /* XXX Bogus, but we need it for now... */
/*
* Round p (pointer or byte index) up to a correctly-aligned value for all
* data types (int, long, ...). The result is u_int and must be cast to
* any desired pointer type.
*/
#define ALIGNBYTES 7
#define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)
#define NBPG 4096 /* bytes/page */
#define PGOFSET (NBPG-1) /* byte offset into page */
#define PGSHIFT 12 /* LOG2(NBPG) */
#define NPTEPG (NBPG/4)
#define NBSEG 0x400000 /* bytes/segment */
#define SEGOFSET (NBSEG-1) /* byte offset into segment */
#define SEGSHIFT 22 /* LOG2(NBSEG) */
#define KERNBASE 0x80000000 /* start of kernel virtual */
#if 0
#define KERNTEXTOFF 0x80080000 /* start of kernel text for kvm_mkdb */
#endif
#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
#define DEV_BSIZE 512
#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
#define BLKDEV_IOSIZE 2048
#define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
#define CLSIZE 1
#define CLSIZELOG2 0
/* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */
#define SSIZE 1 /* initial stack size/NBPG */
#define SINCR 1 /* increment of stack/NBPG */
#define UPAGES 2 /* pages of u-area */
#define UADDR 0xffffc000 /* address of u */
#define USPACE (UPAGES*NBPG) /* size of u-area in bytes */
#define UVPN (UADDR>>PGSHIFT)/* virtual page number of u */
#define KERNELSTACK (UADDR+UPAGES*NBPG) /* top of kernel stack */
/*
* Constants related to network buffer management.
* MCLBYTES must be no larger than CLBYTES (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 128 /* size of an mbuf */
#define MCLBYTES 2048 /* enough for whole Ethernet packet */
#define MCLSHIFT 10
#define MCLOFSET (MCLBYTES - 1)
#ifndef NMBCLUSTERS
#ifdef GATEWAY
#define NMBCLUSTERS 2048 /* map size, max cluster allocation */
#else
#define NMBCLUSTERS 1024 /* map size, max cluster allocation */
#endif
#endif
/*
* Size of kernel malloc arena in CLBYTES-sized logical pages
*/
#ifndef NKMEMCLUSTERS
#define NKMEMCLUSTERS (4096*1024/CLBYTES)
#endif
/* pages ("clicks") (4096 bytes) to disk blocks */
#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
/* pages to bytes */
#define ctob(x) ((x) << PGSHIFT)
#define btoc(x) (((x) + PGOFSET) >> PGSHIFT)
/* bytes to disk blocks */
#define btodb(x) ((x) >> DEV_BSHIFT)
#define dbtob(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))
/*
* Mach derived conversion macros
*/
#define mips_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1))
#define mips_trunc_page(x) ((unsigned)(x) & ~(NBPG-1))
#define mips_btop(x) ((unsigned)(x) >> PGSHIFT)
#define mips_ptob(x) ((unsigned)(x) << PGSHIFT)
#ifdef _KERNEL
#ifndef _LOCORE
extern int (*Mach_splnet)(), (*Mach_splbio)(), (*Mach_splimp)(),
(*Mach_spltty)(), (*Mach_splclock)(), (*Mach_splstatclock)();
#define splnet() ((*Mach_splnet)())
#define splbio() ((*Mach_splbio)())
#define splimp() ((*Mach_splimp)())
#define spltty() ((*Mach_spltty)())
#define splclock() ((*Mach_splclock)())
#define splstatclock() ((*Mach_splstatclock)())
/*
* Delay is based on an assumtion that each time in the loop
* takes 3 clocks. Three is for branch and subtract in the delay slot.
*/
extern int cpuspeed;
#define DELAY(n) { register int N = cpuspeed * (n); while ((N -= 3) > 0); }
#endif
#else /* !_KERNEL */
#define DELAY(n) { register int N = (n); while (--N > 0); }
#endif /* !_KERNEL */
|
