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
|
/* $OpenBSD: param.h,v 1.13 1997/02/14 23:50:18 kstailey Exp $ */
/* $NetBSD: param.h,v 1.34 1996/03/04 05:04:40 cgd Exp $ */
/*
* Copyright (c) 1994, 1995 Gordon W. Ross
* Copyright (c) 1993 Adam Glass
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1982, 1986, 1990, 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.
*
* 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 1.16 92/12/20
* from: @(#)param.h 8.1 (Berkeley) 6/10/93
*/
#ifndef MACHINE
/*
* Machine dependent constants for the Sun3 series.
*/
#define _MACHINE sun3
#define MACHINE "sun3"
#define _MACHINE_ARCH m68k
#define MACHINE_ARCH "m68k"
#define MID_MACHINE MID_M68K
/*
* 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 3
#define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)
#define NBPG 8192 /* bytes/page */
#define PGOFSET (NBPG-1) /* byte offset into page */
#define PGSHIFT 13 /* LOG2(NBPG) */
#define NBSG 0x20000 /* bytes/segment */
#define SEGOFSET (NBSG-1) /* byte offset into segment */
#define SEGSHIFT 17 /* LOG2(NBSG) */
#define KERNBASE 0x0E000000 /* start of kernel virtual */
#define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
#define KERNTEXTOFF 0x0E004000 /* start of kernel text */
#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 USPACE (UPAGES << PGSHIFT)
/*
* 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 MCLSHIFT 11
#define MCLBYTES (1 << MCLSHIFT) /* large enough for ether MTU */
#define MCLOFSET (MCLBYTES - 1)
#ifndef NMBCLUSTERS
#ifdef GATEWAY
#define NMBCLUSTERS 512 /* map size, max cluster allocation */
#else
#define NMBCLUSTERS 256 /* map size, max cluster allocation */
#endif
#endif
/*
* Size of kernel malloc arena in CLBYTES-sized logical pages
*/
#ifndef NKMEMCLUSTERS
#define NKMEMCLUSTERS (2048*1024/CLBYTES)
#endif
/* pages ("clicks") 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 sun3_round_seg(x) ((((unsigned)(x)) + SEGOFSET) & ~SEGOFSET)
#define sun3_trunc_seg(x) ((unsigned)(x) & ~SEGOFSET)
#define sun3_btos(x) ((unsigned)(x) >> SEGSHIFT)
#define sun3_stob(x) ((unsigned)(x) << SEGSHIFT)
#define sun3_round_page(x) ((((unsigned)(x)) + PGOFSET) & ~PGOFSET)
#define sun3_trunc_page(x) ((unsigned)(x) & ~PGOFSET)
#define sun3_btop(x) ((unsigned)(x) >> PGSHIFT)
#define sun3_ptob(x) ((unsigned)(x) << PGSHIFT)
/*
* spl functions; all are done in-line
*/
#include <machine/psl.h>
#define _spl(s) \
({ \
register int _spl_r; \
\
__asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
"&=d" (_spl_r) : "di" (s)); \
_spl_r; \
})
/*
* The rest of this is sun3 specific, because other ports may
* need to do special things in spl0() (i.e. simulate SIR).
* Suns have a REAL interrupt register, so spl0() and splx(s)
* have no need to check for any simulated interrupts, etc.
*/
#define spl0() _spl(PSL_S|PSL_IPL0)
#define spl1() _spl(PSL_S|PSL_IPL1)
#define spl2() _spl(PSL_S|PSL_IPL2)
#define spl3() _spl(PSL_S|PSL_IPL3)
#define spl4() _spl(PSL_S|PSL_IPL4)
#define spl5() _spl(PSL_S|PSL_IPL5)
#define spl6() _spl(PSL_S|PSL_IPL6)
#define spl7() _spl(PSL_S|PSL_IPL7)
#define splx(x) _spl(x)
/* IPL used by soft interrupts: netintr(), softclock() */
#define splsoftclock() spl1()
#define splsoftnet() spl1()
/* Highest block device (strategy) IPL. */
#define splbio() spl2()
/* Highest network interface IPL. */
#define splnet() spl3()
/* Highest tty device IPL. */
#define spltty() spl4()
/* Requirement: imp >= (highest network, tty, or disk IPL) */
#define splimp() spl4()
/* Intersil clock hardware interrupts (hard-wired at 5) */
#define splclock() spl5()
#define splstatclock() splclock()
/* Zilog Serial hardware interrupts (hard-wired at 6) */
#define splzs() spl6()
/* Block out all interrupts (except NMI of course). */
#define splhigh() spl7()
#define splsched() spl7()
/* Get current sr value (debug, etc.) */
extern int getsr __P((void));
#if defined(_KERNEL) && !defined(_LOCORE)
extern void _delay __P((unsigned));
#define delay(us) _delay((us)<<8)
#define DELAY(n) delay(n)
#endif /* _KERNEL && !_LOCORE */
#endif /* MACHINE */
|
