param.h revision 1.15 1 1.1 glass /*
2 1.8 glass * Copyright (c) 1993 Adam Glass
3 1.1 glass * Copyright (c) 1988 University of Utah.
4 1.15 gwr * Copyright (c) 1982, 1986, 1990, 1993
5 1.15 gwr * The Regents of the University of California. All rights reserved.
6 1.1 glass *
7 1.1 glass * This code is derived from software contributed to Berkeley by
8 1.1 glass * the Systems Programming Group of the University of Utah Computer
9 1.1 glass * Science Department.
10 1.1 glass *
11 1.1 glass * Redistribution and use in source and binary forms, with or without
12 1.1 glass * modification, are permitted provided that the following conditions
13 1.1 glass * are met:
14 1.1 glass * 1. Redistributions of source code must retain the above copyright
15 1.1 glass * notice, this list of conditions and the following disclaimer.
16 1.1 glass * 2. Redistributions in binary form must reproduce the above copyright
17 1.1 glass * notice, this list of conditions and the following disclaimer in the
18 1.1 glass * documentation and/or other materials provided with the distribution.
19 1.1 glass * 3. All advertising materials mentioning features or use of this software
20 1.1 glass * must display the following acknowledgement:
21 1.1 glass * This product includes software developed by the University of
22 1.1 glass * California, Berkeley and its contributors.
23 1.1 glass * 4. Neither the name of the University nor the names of its contributors
24 1.1 glass * may be used to endorse or promote products derived from this software
25 1.1 glass * without specific prior written permission.
26 1.1 glass *
27 1.1 glass * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28 1.1 glass * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29 1.1 glass * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30 1.1 glass * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31 1.1 glass * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32 1.1 glass * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33 1.1 glass * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34 1.1 glass * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35 1.1 glass * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36 1.1 glass * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 1.1 glass * SUCH DAMAGE.
38 1.1 glass *
39 1.15 gwr * from: Utah Hdr: machparam.h 1.16 92/12/20
40 1.15 gwr * from: @(#)param.h 8.1 (Berkeley) 6/10/93
41 1.15 gwr * $Id: param.h,v 1.15 1994/05/27 14:55:22 gwr Exp $
42 1.1 glass */
43 1.1 glass
44 1.1 glass /*
45 1.1 glass * Machine dependent constants for HP9000 series 300.
46 1.1 glass */
47 1.1 glass #define MACHINE "sun3"
48 1.11 glass #define MACHINE_ARCH "m68k"
49 1.10 glass #define MID_MACHINE MID_M68K
50 1.11 glass
51 1.1 glass /*
52 1.1 glass * Round p (pointer or byte index) up to a correctly-aligned value
53 1.1 glass * for all data types (int, long, ...). The result is u_int and
54 1.1 glass * must be cast to any desired pointer type.
55 1.1 glass */
56 1.15 gwr #define ALIGNBYTES 3
57 1.15 gwr #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES)
58 1.1 glass
59 1.1 glass #define NBPG 8192 /* bytes/page */
60 1.1 glass #define PGOFSET (NBPG-1) /* byte offset into page */
61 1.1 glass #define PGSHIFT 13 /* LOG2(NBPG) */
62 1.15 gwr
63 1.15 gwr #define NBSG 0x20000 /* bytes/segment */
64 1.15 gwr #define SEGOFSET (NBSG-1) /* byte offset into segment */
65 1.3 glass #define SEGSHIFT 17 /* LOG2(NBSG) */
66 1.1 glass
67 1.15 gwr #define KERNBASE 0x0E000000 /* start of kernel virtual */
68 1.15 gwr #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
69 1.1 glass
70 1.1 glass #define DEV_BSIZE 512
71 1.1 glass #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
72 1.1 glass #define BLKDEV_IOSIZE 2048
73 1.1 glass #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
74 1.1 glass
75 1.1 glass #define CLSIZE 1
76 1.1 glass #define CLSIZELOG2 0
77 1.1 glass
78 1.1 glass /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */
79 1.1 glass #define SSIZE 1 /* initial stack size/NBPG */
80 1.1 glass #define SINCR 1 /* increment of stack/NBPG */
81 1.1 glass
82 1.1 glass #define UPAGES 3 /* pages of u-area */
83 1.1 glass
84 1.9 glass #define CLOCK_VA (0x0FFE0000+(UPAGES*NBPG*2))
85 1.9 glass #define INTERREG_VA (0x0FFE0000+(UPAGES*NBPG*2)+NBPG)
86 1.9 glass
87 1.1 glass /*
88 1.1 glass * Constants related to network buffer management.
89 1.1 glass * MCLBYTES must be no larger than CLBYTES (the software page size), and,
90 1.1 glass * on machines that exchange pages of input or output buffers with mbuf
91 1.1 glass * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
92 1.1 glass * of the hardware page size.
93 1.1 glass */
94 1.1 glass #define MSIZE 128 /* size of an mbuf */
95 1.15 gwr #define MCLBYTES 2048 /* large enough for ether MTU */
96 1.15 gwr #define MCLSHIFT 11
97 1.1 glass #define MCLOFSET (MCLBYTES - 1)
98 1.1 glass #ifndef NMBCLUSTERS
99 1.1 glass #ifdef GATEWAY
100 1.1 glass #define NMBCLUSTERS 512 /* map size, max cluster allocation */
101 1.1 glass #else
102 1.1 glass #define NMBCLUSTERS 256 /* map size, max cluster allocation */
103 1.1 glass #endif
104 1.1 glass #endif
105 1.1 glass
106 1.1 glass /*
107 1.1 glass * Size of kernel malloc arena in CLBYTES-sized logical pages
108 1.1 glass */
109 1.1 glass #ifndef NKMEMCLUSTERS
110 1.1 glass #define NKMEMCLUSTERS (2048*1024/CLBYTES)
111 1.1 glass #endif
112 1.1 glass
113 1.1 glass /* pages ("clicks") (4096 bytes) to disk blocks */
114 1.1 glass #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT))
115 1.1 glass #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT))
116 1.1 glass #define dtob(x) ((x)<<DEV_BSHIFT)
117 1.1 glass
118 1.1 glass /* pages to bytes */
119 1.1 glass #define ctob(x) ((x)<<PGSHIFT)
120 1.1 glass
121 1.1 glass /* bytes to pages */
122 1.1 glass #define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT)
123 1.1 glass
124 1.1 glass #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \
125 1.1 glass ((unsigned)(bytes) >> DEV_BSHIFT)
126 1.1 glass #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \
127 1.1 glass ((unsigned)(db) << DEV_BSHIFT)
128 1.1 glass
129 1.1 glass /*
130 1.1 glass * Map a ``block device block'' to a file system block.
131 1.1 glass * This should be device dependent, and should use the bsize
132 1.1 glass * field from the disk label.
133 1.1 glass * For now though just use DEV_BSIZE.
134 1.1 glass */
135 1.1 glass #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE))
136 1.1 glass
137 1.3 glass /*
138 1.3 glass * Mach derived conversion macros
139 1.3 glass */
140 1.3 glass #define sun3_round_seg(x) ((((unsigned)(x)) + NBSG - 1) & ~(NBSG-1))
141 1.3 glass #define sun3_trunc_seg(x) ((unsigned)(x) & ~(NBSG-1))
142 1.5 glass #define sun3_round_up_seg(x) (sun3_trunc_seg(x) + NBSG)
143 1.15 gwr #define sun3_btos(x) ((unsigned)(x) >> SEGSHIFT)
144 1.15 gwr #define sun3_stob(x) ((unsigned)(x) << SEGSHIFT)
145 1.15 gwr
146 1.3 glass #define sun3_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1))
147 1.3 glass #define sun3_trunc_page(x) ((unsigned)(x) & ~(NBPG-1))
148 1.5 glass #define sun3_round_up_page(x) (sun3_round_page(x) + NBPG)
149 1.3 glass #define sun3_btop(x) ((unsigned)(x) >> PGSHIFT)
150 1.3 glass #define sun3_ptob(x) ((unsigned)(x) << PGSHIFT)
151 1.5 glass
152 1.1 glass /*
153 1.1 glass * spl functions; all but spl0 are done in-line
154 1.1 glass */
155 1.15 gwr #include <machine/psl.h>
156 1.1 glass
157 1.2 glass #ifdef __GNUC__
158 1.1 glass #define _spl(s) \
159 1.1 glass ({ \
160 1.1 glass register int _spl_r; \
161 1.1 glass \
162 1.1 glass asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
163 1.1 glass "&=d" (_spl_r) : "di" (s)); \
164 1.1 glass _spl_r; \
165 1.1 glass })
166 1.2 glass #endif
167 1.1 glass /* spl0 requires checking for software interrupts */
168 1.1 glass #define spl1() _spl(PSL_S|PSL_IPL1)
169 1.1 glass #define spl2() _spl(PSL_S|PSL_IPL2)
170 1.1 glass #define spl3() _spl(PSL_S|PSL_IPL3)
171 1.1 glass #define spl4() _spl(PSL_S|PSL_IPL4)
172 1.1 glass #define spl5() _spl(PSL_S|PSL_IPL5)
173 1.1 glass #define spl6() _spl(PSL_S|PSL_IPL6)
174 1.1 glass #define spl7() _spl(PSL_S|PSL_IPL7)
175 1.1 glass
176 1.1 glass #define splsoftclock() spl1()
177 1.6 glass #define splnet() spl3()
178 1.6 glass #define splbio() spl2()
179 1.13 glass #define splimp() spl3()
180 1.12 glass #define spltty() spl2()
181 1.13 glass #define splzs() spl6()
182 1.6 glass #define splclock() spl5()
183 1.10 glass #define splstatclock() splclock()
184 1.13 glass #define splvm() splimp()
185 1.1 glass #define splhigh() spl7()
186 1.1 glass #define splsched() spl7()
187 1.1 glass
188 1.1 glass /* watch out for side effects */
189 1.1 glass #define splx(s) (s & PSL_IPL ? _spl(s) : spl0())
190 1.1 glass
191 1.1 glass #ifdef KERNEL
192 1.1 glass #ifndef LOCORE
193 1.14 gwr #define DELAY(n) delay(n)
194 1.1 glass #endif
195 1.1 glass
196 1.1 glass #else
197 1.1 glass #define DELAY(n) { register int N = (n); while (--N > 0); }
198 1.1 glass #endif
199