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
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
|
/* $OpenBSD: param.h,v 1.10 1998/08/18 05:08:50 millert Exp $ */
/* $NetBSD: param.h,v 1.29 1997/03/10 22:50:37 pk Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This software was developed by the Computer Systems Engineering group
* at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
* contributed to Berkeley.
*
* 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, Lawrence Berkeley Laboratory.
*
* 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 8.1 (Berkeley) 6/11/93
*/
/*
* Sun4M support by Aaron Brown, Harvard University.
* Changes Copyright (c) 1995 The President and Fellows of Harvard College.
* All rights reserved.
*/
#define _MACHINE sparc
#define MACHINE "sparc"
#define _MACHINE_ARCH sparc
#define MACHINE_ARCH "sparc"
#define MID_MACHINE MID_SPARC
#ifdef _KERNEL /* XXX */
#ifndef _LOCORE /* XXX */
#include <machine/cpu.h> /* XXX */
#endif /* XXX */
#endif /* XXX */
/*
* Round p (pointer or byte index) up to a correctly-aligned value for
* the machine's strictest data type. 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 7
#define ALIGN(p) (((u_int)(p) + ALIGNBYTES) & ~ALIGNBYTES)
#define ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)
#define SUN4_PGSHIFT 13 /* for a sun4 machine */
#define SUN4CM_PGSHIFT 12 /* for a sun4c or sun4m machine */
/*
* The following variables are always defined and initialized (in locore)
* so independently compiled modules (e.g. LKMs) can be used irrespective
* of the `options SUN4?' combination a particular kernel was configured with.
* See also the definitions of NBPG, PGOFSET and PGSHIFT below.
*/
#if defined(_KERNEL) && !defined(_LOCORE)
extern int nbpg, pgofset, pgshift;
#endif
#define KERNBASE 0xf8000000 /* start of kernel virtual space */
#define KERNTEXTOFF 0xf8004000 /* start of kernel text */
#define DEV_BSIZE 512
#define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
#define BLKDEV_IOSIZE 2048
#define MAXPHYS (64 * 1024)
#define CLSIZE 1
#define CLSIZELOG2 0
/* NOTE: SSIZE must be multiple of CLSIZE */
#define SSIZE 1 /* initial stack size in pages */
#define USPACE 8192
/*
* 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 11 /* log2(MCLBYTES) */
#define MCLOFSET (MCLBYTES - 1)
#ifndef NMBCLUSTERS
#ifdef GATEWAY
#define NMBCLUSTERS 1024 /* map size, max cluster allocation */
#else
#define NMBCLUSTERS 512 /* map size, max cluster allocation */
#endif
#endif
/*
* Size of kernel malloc arena in CLBYTES-sized logical pages.
*/
#ifndef NKMEMCLUSTERS
#define NKMEMCLUSTERS (6 * 1024 * 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 sparc_btop(x) ((unsigned)(x) >> PGSHIFT)
#define sparc_ptob(x) ((unsigned)(x) << PGSHIFT)
/*
* dvmamap manages a range of DVMA addresses intended to create double
* mappings of physical memory. In a way, `dvmamap' is a submap of the
* VM map `phys_map'. The difference is the use of the `resource map'
* routines to manage page allocation, allowing DVMA addresses to be
* allocated and freed from within interrupt routines.
*
* Note that `phys_map' can still be used to allocate memory-backed pages
* in DVMA space.
*/
#ifdef _KERNEL
#ifndef _LOCORE
extern vm_offset_t dvma_base;
extern vm_offset_t dvma_end;
extern struct map *dvmamap;
/*
* The dvma resource map is defined in page units, which are numbered 1 to N.
* Use these macros to convert to/from virtual addresses.
*/
#define rctov(n) (ctob(((n)-1))+dvma_base)
#define vtorc(v) ((btoc((v)-dvma_base))+1)
extern caddr_t kdvma_mapin __P((caddr_t, int, int));
extern caddr_t dvma_malloc __P((size_t, void *, int));
extern void dvma_free __P((caddr_t, size_t, void *));
extern void delay __P((unsigned int));
#define DELAY(n) delay(n)
extern int cputyp;
#if 0
extern int cpumod;
extern int mmumod;
#endif
#endif /* _LOCORE */
#endif /* _KERNEL */
/*
* Values for the cputyp variable.
*/
#define CPU_SUN4 0
#define CPU_SUN4C 1
#define CPU_SUN4M 2
/*
* Shorthand CPU-type macros. Enumerate all eight cases.
* Let compiler optimize away code conditional on constants.
*
* On a sun4 machine, the page size is 8192, while on a sun4c and sun4m
* it is 4096. Therefore, in the (SUN4 && (SUN4C || SUN4M)) cases below,
* NBPG, PGOFSET and PGSHIFT are defined as variables which are initialized
* early in locore.s after the machine type has been detected.
*
* Note that whenever the macros defined below evaluate to expressions
* involving variables, the kernel will perform slighly worse due to the
* extra memory references they'll generate.
*/
#if defined(SUN4M) && defined(SUN4C) && defined(SUN4)
# define CPU_ISSUN4M (cputyp == CPU_SUN4M)
# define CPU_ISSUN4C (cputyp == CPU_SUN4C)
# define CPU_ISSUN4 (cputyp == CPU_SUN4)
# define CPU_ISSUN4OR4C (cputyp == CPU_SUN4 || cputyp == CPU_SUN4C)
# define CPU_ISSUN4COR4M (cputyp == CPU_SUN4C || cputyp == CPU_SUN4M)
# define NBPG nbpg
# define PGOFSET pgofset
# define PGSHIFT pgshift
#elif defined(SUN4M) && defined(SUN4C) && !defined(SUN4)
# define CPU_ISSUN4M (cputyp == CPU_SUN4M)
# define CPU_ISSUN4C (cputyp == CPU_SUN4C)
# define CPU_ISSUN4 (0)
# define CPU_ISSUN4OR4C (cputyp == CPU_SUN4C)
# define CPU_ISSUN4COR4M (cputyp == CPU_SUN4C || cputyp == CPU_SUN4M)
# define NBPG 4096
# define PGOFSET (NBPG-1)
# define PGSHIFT SUN4CM_PGSHIFT
#elif defined(SUN4M) && !defined(SUN4C) && defined(SUN4)
# define CPU_ISSUN4M (cputyp == CPU_SUN4M)
# define CPU_ISSUN4C (0)
# define CPU_ISSUN4 (cputyp == CPU_SUN4)
# define CPU_ISSUN4OR4C (cputyp == CPU_SUN4)
# define CPU_ISSUN4COR4M (cputyp == CPU_SUN4M)
# define NBPG nbpg
# define PGOFSET pgofset
# define PGSHIFT pgshift
#elif defined(SUN4M) && !defined(SUN4C) && !defined(SUN4)
# define CPU_ISSUN4M (1)
# define CPU_ISSUN4C (0)
# define CPU_ISSUN4 (0)
# define CPU_ISSUN4OR4C (0)
# define CPU_ISSUN4COR4M (1)
# define NBPG 4096
# define PGOFSET (NBPG-1)
# define PGSHIFT SUN4CM_PGSHIFT
#elif !defined(SUN4M) && defined(SUN4C) && defined(SUN4)
# define CPU_ISSUN4M (0)
# define CPU_ISSUN4C (cputyp == CPU_SUN4C)
# define CPU_ISSUN4 (cputyp == CPU_SUN4)
# define CPU_ISSUN4OR4C (1)
# define CPU_ISSUN4COR4M (cputyp == CPU_SUN4C)
# define NBPG nbpg
# define PGOFSET pgofset
# define PGSHIFT pgshift
#elif !defined(SUN4M) && defined(SUN4C) && !defined(SUN4)
# define CPU_ISSUN4M (0)
# define CPU_ISSUN4C (1)
# define CPU_ISSUN4 (0)
# define CPU_ISSUN4OR4C (1)
# define CPU_ISSUN4COR4M (1)
# define NBPG 4096
# define PGOFSET (NBPG-1)
# define PGSHIFT SUN4CM_PGSHIFT
#elif !defined(SUN4M) && !defined(SUN4C) && defined(SUN4)
# define CPU_ISSUN4M (0)
# define CPU_ISSUN4C (0)
# define CPU_ISSUN4 (1)
# define CPU_ISSUN4OR4C (1)
# define CPU_ISSUN4COR4M (0)
# define NBPG 8192
# define PGOFSET (NBPG-1)
# define PGSHIFT SUN4_PGSHIFT
#elif !defined(SUN4M) && !defined(SUN4C) && !defined(SUN4)
# define CPU_ISSUN4M (cputyp == CPU_SUN4M)
# define CPU_ISSUN4C (cputyp == CPU_SUN4C)
# define CPU_ISSUN4 (cputyp == CPU_SUN4)
# define CPU_ISSUN4OR4C (cputyp == CPU_SUN4 || cputyp == CPU_SUN4C)
# define CPU_ISSUN4COR4M (cputyp == CPU_SUN4C || cputyp == CPU_SUN4M)
# define NBPG nbpg
# define PGOFSET pgofset
# define PGSHIFT pgshift
#endif
|
