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
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
/* $OpenBSD: param.h,v 1.18 2001/06/13 07:38:47 miod Exp $ */
/* $NetBSD: param.h,v 1.39 1999/10/22 21:14:34 ragge 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
*/
#ifndef _VAX_PARAM_H_
#define _VAX_PARAM_H_
/*
* Machine dependent constants for VAX.
*/
#define _MACHINE vax
#define MACHINE "vax"
#define _MACHINE_ARCH vax
#define MACHINE_ARCH "vax"
#define MID_MACHINE MID_VAX
/*
* 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.
*
* 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(int) - 1)
#define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)
#define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)
#define PGSHIFT 12 /* LOG2(NBPG) */
#define NBPG (1 << PGSHIFT) /* (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 VAX_PGSHIFT 9
#define VAX_NBPG (1 << VAX_PGSHIFT)
#define VAX_PGOFSET (VAX_NBPG - 1)
#define VAX_NPTEPG (VAX_NBPG / 4)
#define KERNBASE 0x80000000 /* start of kernel virtual */
#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
#define DEV_BSIZE (1 << DEV_BSHIFT)
#define BLKDEV_IOSIZE 2048
#define MAXPHYS (63 * 1024) /* max raw I/O transfer size */
#define MAXBSIZE 0x4000 /* max FS block size - XXX */
#define UPAGES 2 /* pages of u-area */
#define USPACE (NBPG*UPAGES)
#define REDZONEADDR (VAX_NBPG*3) /* Must be > sizeof(struct user) */
#ifndef MSGBUFSIZE
#define MSGBUFSIZE 8192 /* 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.
*/
#ifndef MSIZE
#define MSIZE 128 /* size of an mbuf */
#endif /* MSIZE */
#ifndef MCLSHIFT
#define MCLSHIFT 11 /* convert bytes to m_buf clusters */
#endif /* MCLSHIFT */
#define MCLBYTES (1 << MCLSHIFT) /* size of an m_buf cluster */
#define MCLOFSET (MCLBYTES - 1) /* offset within an m_buf cluster */
#ifndef NMBCLUSTERS
#ifdef GATEWAY
#define NMBCLUSTERS 512 /* map size, max cluster allocation */
#else
#define NMBCLUSTERS 256 /* map size, max cluster allocation */
#endif /* GATEWAY */
#endif /* NMBCLUSTERS */
/*
* Size of kernel malloc arena in NBPG-sized logical pages
*/
#ifndef NKMEMCLUSTERS
#define NKMEMCLUSTERS (4096*1024/NBPG)
#endif
/*
* Some macros for units conversion
*/
/* pages ("clicks") to disk blocks */
#define ctod(x) ((x) << (PGSHIFT - DEV_BSHIFT))
#define dtoc(x) ((x) >> (PGSHIFT - DEV_BSHIFT))
/* clicks to bytes */
#define ctob(x) ((x) << PGSHIFT)
#define btoc(x) (((unsigned)(x) + PGOFSET) >> PGSHIFT)
#define btop(x) (((unsigned)(x)) >> PGSHIFT)
/* bytes to disk blocks */
#define btodb(x) ((x) >> DEV_BSHIFT)
#define dbtob(x) ((x) << DEV_BSHIFT)
/* MD conversion macros */
#define vax_btoc(x) (((unsigned)(x) + VAX_PGOFSET) >> VAX_PGSHIFT)
#define vax_btop(x) (((unsigned)(x)) >> VAX_PGSHIFT)
/*
* Map a ``block device block'' to a file system block.
* This should be device dependent, and will be if we
* add an entry to cdevsw/bdevsw for that purpose.
* For now though just use DEV_BSIZE.
*/
#define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE))
#define ovbcopy(x,y,z) bcopy(x, y, z)
#ifdef _KERNEL
#ifndef lint
#define splx(reg) \
({ \
register int val; \
__asm __volatile ("mfpr $0x12,%0;mtpr %1,$0x12" \
: "=&g" (val) \
: "g" (reg)); \
val; \
})
#define _splraise(reg) \
({ \
register int val; \
__asm __volatile ("mfpr $0x12,%0" \
: "=&g" (val) \
: ); \
if ((reg) > val) { \
__asm __volatile ("mtpr %0,$0x12" \
: \
: "g" (reg)); \
} \
val; \
})
#endif
#define spl0() splx(0) /* IPL0 */
#define spllowersoftclock() splx(8) /* IPL08 */
#define splsoftclock() _splraise(8) /* IPL08 */
#define splsoftnet() _splraise(0xc) /* IPL0C */
#define splddb() _splraise(0xf) /* IPL0F */
#define splbio() _splraise(0x15) /* IPL15 */
#define splnet() _splraise(0x15) /* IPL15 */
#define spltty() _splraise(0x15) /* IPL15 */
#define splimp() _splraise(0x17) /* IPL17 */
#define splclock() _splraise(0x18) /* IPL18 */
#define splhigh() _splraise(0x1f) /* IPL1F */
#define splstatclock() splclock()
/* These are better to use when playing with VAX buses */
#define spl4() splx(0x14)
#define spl5() splx(0x15)
#define spl6() splx(0x16)
#define spl7() splx(0x17)
/* Prototype needed for delay() */
#ifndef _LOCORE
#include <machine/cpu.h>
void delay __P((int));
/* inline macros used inside kernel */
#include <machine/macros.h>
#endif
#define DELAY(x) delay(x)
#endif /* _KERNEL */
#endif /* _VAX_PARAM_H_ */
|
