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1.1 root 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: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the University of
21: * California, Berkeley and its contributors.
22: * 4. Neither the name of the University nor the names of its contributors
23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: *
38: * from: Utah $Hdr: machparam.h 1.11 89/08/14$
39: *
40: * @(#)param.h 7.8 (Berkeley) 6/28/91
41: */
42:
43: /*
44: * Machine dependent constants for HP9000 series 300.
45: */
46: #define MACHINE "hp300"
47:
48: /*
49: * Round p (pointer or byte index) up to a correctly-aligned value
50: * for all data types (int, long, ...). The result is u_int and
51: * must be cast to any desired pointer type.
52: */
53: #define ALIGN(p) (((u_int)(p) + (sizeof(int) - 1)) &~ (sizeof(int) - 1))
54:
55: #define NBPG 4096 /* bytes/page */
56: #define PGOFSET (NBPG-1) /* byte offset into page */
57: #define PGSHIFT 12 /* LOG2(NBPG) */
58: #define NPTEPG (NBPG/(sizeof (struct pte)))
59:
60: #define NBSEG (1024*NBPG) /* bytes/segment */
61: #define SEGOFSET (NBSEG-1) /* byte offset into segment */
62: #define SEGSHIFT 22 /* LOG2(NBSEG) */
63:
64: #define KERNBASE 0x00000000 /* start of kernel virtual */
65: #define BTOPKERNBASE ((u_long)KERNBASE >> PGSHIFT)
66:
67: #define DEV_BSIZE 512
68: #define DEV_BSHIFT 9 /* log2(DEV_BSIZE) */
69: #define BLKDEV_IOSIZE 2048
70: #define MAXPHYS (64 * 1024) /* max raw I/O transfer size */
71:
72: #define CLSIZE 1
73: #define CLSIZELOG2 0
74:
75: /* NOTE: SSIZE, SINCR and UPAGES must be multiples of CLSIZE */
76: #define SSIZE 1 /* initial stack size/NBPG */
77: #define SINCR 1 /* increment of stack/NBPG */
78:
79: #define UPAGES 3 /* pages of u-area */
80:
81: /*
82: * Constants related to network buffer management.
83: * MCLBYTES must be no larger than CLBYTES (the software page size), and,
84: * on machines that exchange pages of input or output buffers with mbuf
85: * clusters (MAPPED_MBUFS), MCLBYTES must also be an integral multiple
86: * of the hardware page size.
87: */
88: #define MSIZE 128 /* size of an mbuf */
89: #define MCLBYTES 1024
90: #define MCLSHIFT 10
91: #define MCLOFSET (MCLBYTES - 1)
92: #ifndef NMBCLUSTERS
93: #ifdef GATEWAY
94: #define NMBCLUSTERS 512 /* map size, max cluster allocation */
95: #else
96: #define NMBCLUSTERS 256 /* map size, max cluster allocation */
97: #endif
98: #endif
99:
100: /*
101: * Size of kernel malloc arena in CLBYTES-sized logical pages
102: */
103: #ifndef NKMEMCLUSTERS
104: #define NKMEMCLUSTERS (2048*1024/CLBYTES)
105: #endif
106:
107: /* pages ("clicks") (4096 bytes) to disk blocks */
108: #define ctod(x) ((x)<<(PGSHIFT-DEV_BSHIFT))
109: #define dtoc(x) ((x)>>(PGSHIFT-DEV_BSHIFT))
110: #define dtob(x) ((x)<<DEV_BSHIFT)
111:
112: /* pages to bytes */
113: #define ctob(x) ((x)<<PGSHIFT)
114:
115: /* bytes to pages */
116: #define btoc(x) (((unsigned)(x)+(NBPG-1))>>PGSHIFT)
117:
118: #define btodb(bytes) /* calculates (bytes / DEV_BSIZE) */ \
119: ((unsigned)(bytes) >> DEV_BSHIFT)
120: #define dbtob(db) /* calculates (db * DEV_BSIZE) */ \
121: ((unsigned)(db) << DEV_BSHIFT)
122:
123: /*
124: * Map a ``block device block'' to a file system block.
125: * This should be device dependent, and should use the bsize
126: * field from the disk label.
127: * For now though just use DEV_BSIZE.
128: */
129: #define bdbtofsb(bn) ((bn) / (BLKDEV_IOSIZE/DEV_BSIZE))
130:
131: /*
132: * Mach derived conversion macros
133: */
134: #define hp300_round_seg(x) ((((unsigned)(x)) + NBSEG - 1) & ~(NBSEG-1))
135: #define hp300_trunc_seg(x) ((unsigned)(x) & ~(NBSEG-1))
136: #define hp300_round_page(x) ((((unsigned)(x)) + NBPG - 1) & ~(NBPG-1))
137: #define hp300_trunc_page(x) ((unsigned)(x) & ~(NBPG-1))
138: #define hp300_btos(x) ((unsigned)(x) >> SEGSHIFT)
139: #define hp300_stob(x) ((unsigned)(x) << SEGSHIFT)
140: #define hp300_btop(x) ((unsigned)(x) >> PGSHIFT)
141: #define hp300_ptob(x) ((unsigned)(x) << PGSHIFT)
142:
143: /*
144: * spl functions; all but spl0 are done in-line
145: */
146: #include <machine/psl.h>
147:
148: #define _spl(s) \
149: ({ \
150: register int _spl_r; \
151: \
152: asm __volatile ("clrl %0; movew sr,%0; movew %1,sr" : \
153: "&=d" (_spl_r) : "di" (s)); \
154: _spl_r; \
155: })
156:
157: /* spl0 requires checking for software interrupts */
158: #define spl1() _spl(PSL_S|PSL_IPL1)
159: #define spl2() _spl(PSL_S|PSL_IPL2)
160: #define spl3() _spl(PSL_S|PSL_IPL3)
161: #define spl4() _spl(PSL_S|PSL_IPL4)
162: #define spl5() _spl(PSL_S|PSL_IPL5)
163: #define spl6() _spl(PSL_S|PSL_IPL6)
164: #define spl7() _spl(PSL_S|PSL_IPL7)
165:
166: #define splsoftclock() spl1()
167: #define splnet() spl1()
168: #define splbio() spl5()
169: #define splimp() spl5()
170: #define spltty() spl5()
171: #define splclock() spl6()
172: #define splvm() spl6()
173: #define splhigh() spl7()
174: #define splsched() spl7()
175:
176: /* watch out for side effects */
177: #define splx(s) (s & PSL_IPL ? _spl(s) : spl0())
178:
179: #ifdef KERNEL
180: #ifndef LOCORE
181: int cpuspeed;
182: #define DELAY(n) { register int N = cpuspeed * (n); while (--N > 0); }
183: #endif
184:
185: #else
186: #define DELAY(n) { register int N = (n); while (--N > 0); }
187: #endif
188:
189: #ifdef HPUXCOMPAT
190: /*
191: * Constants/macros for HPUX multiple mapping of user address space.
192: * Pages in the first 256Mb are mapped in at every 256Mb segment.
193: */
194: #define HPMMMASK 0xF0000000
195: #define ISHPMMADDR(v) \
196: ((curproc->p_addr->u_pcb.pcb_flags&PCB_HPUXMMAP) && ((unsigned)(v)&HPMMMASK) != HPMMMASK)
197: #define HPMMBASEADDR(v) ((unsigned)(v) & ~HPMMMASK)
198: #endif
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