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1 | /* |
2 | * Copyright (c) 1988 University of Utah. | |
3 | * Copyright (c) 1982, 1986, 1990 The Regents of the University of California. | |
4 | * All rights reserved. | |
5 | * | |
6 | * This code is derived from software contributed to Berkeley by | |
7 | * the Systems Programming Group of the University of Utah Computer | |
8 | * Science Department. | |
9 | * | |
10 | * %sccs.include.redist.c% | |
11 | * | |
b1c25049 | 12 | * from: Utah $Hdr: machparam.h 1.16 92/12/20$ |
88a7e859 | 13 | * |
b1c25049 | 14 | * @(#)param.h 7.13 (Berkeley) %G% |
88a7e859 KM |
15 | */ |
16 | ||
17 | /* | |
18 | * Machine dependent constants for HP9000 series 300. | |
19 | */ | |
20 | #define MACHINE "hp300" | |
21 | ||
d04ccb97 | 22 | /* |
bc2f18e8 KB |
23 | * Round p (pointer or byte index) up to a correctly-aligned value for all |
24 | * data types (int, long, ...). The result is u_int and must be cast to | |
25 | * any desired pointer type. | |
d04ccb97 | 26 | */ |
83305898 KB |
27 | #define ALIGNBYTES 3 |
28 | #define ALIGN(p) (((u_int)(p) + ALIGNBYTES) &~ ALIGNBYTES) | |
d04ccb97 | 29 | |
88a7e859 KM |
30 | #define NBPG 4096 /* bytes/page */ |
31 | #define PGOFSET (NBPG-1) /* byte offset into page */ | |
32 | #define PGSHIFT 12 /* LOG2(NBPG) */ | |
33 | #define NPTEPG (NBPG/(sizeof (struct pte))) | |
34 | ||
9acfa6cd | 35 | #define NBSEG 0x400000 /* bytes/segment */ |
88a7e859 KM |
36 | #define SEGOFSET (NBSEG-1) /* byte offset into segment */ |
37 | #define SEGSHIFT 22 /* LOG2(NBSEG) */ | |
38 | ||
39 | #define KERNBASE 0x00000000 /* start of kernel virtual */ | |
40 | #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT) | |
41 | ||
42 | #define DEV_BSIZE 512 | |
43 | #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */ | |
44 | #define BLKDEV_IOSIZE 2048 | |
45 | #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */ | |
46 | ||
47 | #define CLSIZE 1 | |
48 | #define CLSIZELOG2 0 | |
49 | ||
98a9a1f2 | 50 | /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */ |
88a7e859 KM |
51 | #define SSIZE 1 /* initial stack size/NBPG */ |
52 | #define SINCR 1 /* increment of stack/NBPG */ | |
53 | ||
b1c25049 | 54 | #define UPAGES 2 /* pages of u-area */ |
88a7e859 KM |
55 | |
56 | /* | |
57 | * Constants related to network buffer management. | |
58 | * MCLBYTES must be no larger than CLBYTES (the software page size), and, | |
59 | * on machines that exchange pages of input or output buffers with mbuf | |
60 | * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple | |
61 | * of the hardware page size. | |
62 | */ | |
63 | #define MSIZE 128 /* size of an mbuf */ | |
b1c25049 MH |
64 | #define MCLBYTES 2048 /* large enough for ether MTU */ |
65 | #define MCLSHIFT 11 | |
88a7e859 KM |
66 | #define MCLOFSET (MCLBYTES - 1) |
67 | #ifndef NMBCLUSTERS | |
68 | #ifdef GATEWAY | |
69 | #define NMBCLUSTERS 512 /* map size, max cluster allocation */ | |
70 | #else | |
71 | #define NMBCLUSTERS 256 /* map size, max cluster allocation */ | |
72 | #endif | |
73 | #endif | |
74 | ||
75 | /* | |
76 | * Size of kernel malloc arena in CLBYTES-sized logical pages | |
77 | */ | |
78 | #ifndef NKMEMCLUSTERS | |
db6c00fa | 79 | #define NKMEMCLUSTERS (2048*1024/CLBYTES) |
88a7e859 KM |
80 | #endif |
81 | ||
96b316eb | 82 | /* pages ("clicks") (4096 bytes) to disk blocks */ |
88a7e859 KM |
83 | #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT)) |
84 | #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT)) | |
85 | #define dtob(x) ((x)<<DEV_BSHIFT) | |
86 | ||
96b316eb | 87 | /* pages to bytes */ |
88a7e859 KM |
88 | #define ctob(x) ((x)<<PGSHIFT) |
89 | ||
96b316eb | 90 | /* bytes to pages */ |
88a7e859 KM |
91 | #define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT) |
92 | ||
b1c25049 MH |
93 | #define LABELSECTOR (1024/DEV_BSIZE) |
94 | #define LABELOFFSET 0 | |
95 | ||
88a7e859 KM |
96 | #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \ |
97 | ((unsigned)(bytes) >> DEV_BSHIFT) | |
98 | #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \ | |
99 | ((unsigned)(db) << DEV_BSHIFT) | |
100 | ||
101 | /* | |
102 | * Map a ``block device block'' to a file system block. | |
98a9a1f2 MK |
103 | * This should be device dependent, and should use the bsize |
104 | * field from the disk label. | |
88a7e859 KM |
105 | * For now though just use DEV_BSIZE. |
106 | */ | |
107 | #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE)) | |
108 | ||
4534a638 KM |
109 | /* |
110 | * Mach derived conversion macros | |
111 | */ | |
4534a638 KM |
112 | #define hp300_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1)) |
113 | #define hp300_trunc_page(x) ((unsigned)(x) & ~(NBPG-1)) | |
4534a638 KM |
114 | #define hp300_btop(x) ((unsigned)(x) >> PGSHIFT) |
115 | #define hp300_ptob(x) ((unsigned)(x) << PGSHIFT) | |
116 | ||
88a7e859 | 117 | /* |
98a9a1f2 | 118 | * spl functions; all but spl0 are done in-line |
88a7e859 | 119 | */ |
98a9a1f2 MK |
120 | #include <machine/psl.h> |
121 | ||
122 | #define _spl(s) \ | |
123 | ({ \ | |
124 | register int _spl_r; \ | |
125 | \ | |
126 | asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \ | |
127 | "&=d" (_spl_r) : "di" (s)); \ | |
128 | _spl_r; \ | |
129 | }) | |
130 | ||
131 | /* spl0 requires checking for software interrupts */ | |
132 | #define spl1() _spl(PSL_S|PSL_IPL1) | |
133 | #define spl2() _spl(PSL_S|PSL_IPL2) | |
134 | #define spl3() _spl(PSL_S|PSL_IPL3) | |
135 | #define spl4() _spl(PSL_S|PSL_IPL4) | |
136 | #define spl5() _spl(PSL_S|PSL_IPL5) | |
137 | #define spl6() _spl(PSL_S|PSL_IPL6) | |
138 | #define spl7() _spl(PSL_S|PSL_IPL7) | |
139 | ||
ce0d9cf2 KM |
140 | #define splsoftclock() spl1() |
141 | #define splnet() spl1() | |
142 | #define splbio() spl5() | |
143 | #define splimp() spl5() | |
144 | #define spltty() spl5() | |
145 | #define splclock() spl6() | |
146 | #define splstatclock() spl6() | |
147 | #define splvm() spl6() | |
148 | #define splhigh() spl7() | |
149 | #define splsched() spl7() | |
98a9a1f2 MK |
150 | |
151 | /* watch out for side effects */ | |
152 | #define splx(s) (s & PSL_IPL ? _spl(s) : spl0()) | |
88a7e859 KM |
153 | |
154 | #ifdef KERNEL | |
155 | #ifndef LOCORE | |
156 | int cpuspeed; | |
157 | #define DELAY(n) { register int N = cpuspeed * (n); while (--N > 0); } | |
158 | #endif | |
ffbc6a8d | 159 | #else |
88a7e859 | 160 | #define DELAY(n) { register int N = (n); while (--N > 0); } |
ffbc6a8d | 161 | #endif |
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162 | |
163 | #ifdef HPUXCOMPAT | |
164 | /* | |
165 | * Constants/macros for HPUX multiple mapping of user address space. | |
166 | * Pages in the first 256Mb are mapped in at every 256Mb segment. | |
167 | */ | |
168 | #define HPMMMASK 0xF0000000 | |
9acfa6cd | 169 | #define ISHPMMADDR(v) \ |
b1c25049 MH |
170 | ((curproc->p_md.md_flags & MDP_HPUXMMAP) && \ |
171 | ((unsigned)(v) & HPMMMASK) && \ | |
9acfa6cd MH |
172 | ((unsigned)(v) & HPMMMASK) != HPMMMASK) |
173 | #define HPMMBASEADDR(v) \ | |
174 | ((unsigned)(v) & ~HPMMMASK) | |
88a7e859 | 175 | #endif |