param.h revision 91360 
1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 *	from: @(#)param.h	5.8 (Berkeley) 6/28/91
30 * $FreeBSD: head/sys/sparc64/include/param.h 91360 2002-02-27 06:08:13Z jake $
31 */
32
33/*
34 * Machine dependent constants for sparc64.
35 */
36
37#define	TODO							\
38	panic("implement %s", __func__)
39
40/*
41 * Round p (pointer or byte index) up to a correctly-aligned value
42 * for all data types (int, long, ...).   The result is unsigned int
43 * and must be cast to any desired pointer type.
44 */
45#ifndef _ALIGNBYTES
46#define _ALIGNBYTES	0xf
47#endif
48#ifndef _ALIGN
49#define _ALIGN(p)	(((u_long)(p) + _ALIGNBYTES) & ~_ALIGNBYTES)
50#endif
51
52#ifndef _MACHINE
53#define	_MACHINE	sparc64
54#endif
55#ifndef _MACHINE_ARCH
56#define	_MACHINE_ARCH	sparc64
57#endif
58
59#ifndef _NO_NAMESPACE_POLLUTION
60
61#ifndef _MACHINE_PARAM_H_
62#define	_MACHINE_PARAM_H_
63
64#ifndef MACHINE
65#define MACHINE		"sparc64"
66#endif
67#ifndef MACHINE_ARCH
68#define	MACHINE_ARCH	"sparc64"
69#endif
70#define MID_MACHINE	MID_SPARC64
71
72/*
73 * OBJFORMAT_NAMES is a comma-separated list of the object formats
74 * that are supported on the architecture.
75 */
76#define OBJFORMAT_NAMES		"elf"
77#define OBJFORMAT_DEFAULT	"elf"
78
79#ifdef SMP
80#define MAXCPU		16
81#else
82#define MAXCPU		1
83#endif /* SMP */
84
85#define	INT_SHIFT	2
86#define	PTR_SHIFT	3
87
88#define ALIGNBYTES	_ALIGNBYTES
89#define ALIGN(p)	_ALIGN(p)
90
91#define	PAGE_SHIFT_8K	13
92#define	PAGE_SIZE_8K	(1UL<<PAGE_SHIFT_8K)
93#define	PAGE_MASK_8K	(PAGE_SIZE_8K-1)
94
95#define	PAGE_SHIFT_64K	16
96#define	PAGE_SIZE_64K	(1UL<<PAGE_SHIFT_64K)
97#define	PAGE_MASK_64K	(PAGE_SIZE_64K-1)
98
99#define	PAGE_SHIFT_512K	19
100#define	PAGE_SIZE_512K	(1UL<<PAGE_SHIFT_512K)
101#define	PAGE_MASK_512K	(PAGE_SIZE_512K-1)
102
103#define	PAGE_SHIFT_4M	22
104#define	PAGE_SIZE_4M	(1UL<<PAGE_SHIFT_4M)
105#define	PAGE_MASK_4M	(PAGE_SIZE_4M-1)
106
107#define PAGE_SHIFT_MIN	PAGE_SHIFT_8K
108#define PAGE_SIZE_MIN	PAGE_SIZE_8K
109#define PAGE_MASK_MIN	PAGE_MASK_8K
110#define PAGE_SHIFT	PAGE_SHIFT_8K	/* LOG2(PAGE_SIZE) */
111#define PAGE_SIZE	PAGE_SIZE_8K	/* bytes/page */
112#define PAGE_MASK	PAGE_MASK_8K
113#define PAGE_SHIFT_MAX	PAGE_SHIFT_4M
114#define PAGE_SIZE_MAX	PAGE_SIZE_4M
115#define PAGE_MASK_MAX	PAGE_MASK_4M
116
117#define DEV_BSHIFT	9		/* log2(DEV_BSIZE) */
118#define DEV_BSIZE	(1<<DEV_BSHIFT)
119
120#ifndef BLKDEV_IOSIZE
121#define BLKDEV_IOSIZE	PAGE_SIZE	/* default block device I/O size */
122#endif
123#define DFLTPHYS	(64 * 1024)	/* default max raw I/O transfer size */
124#define MAXPHYS		(128 * 1024)	/* max raw I/O transfer size */
125#define MAXDUMPPGS	(DFLTPHYS/PAGE_SIZE)
126
127#define KSTACK_PAGES		4	/* pages of kernel stack (with pcb) */
128#define UAREA_PAGES		1	/* pages of user area */
129#define PCPU_PAGES		1
130
131#define KSTACK_GUARD 		/* compile in kstack guard page */
132#define KSTACK_GUARD_PAGES	1
133
134/*
135 * Constants related to network buffer management.
136 * MCLBYTES must be no larger than PAGE_SIZE.
137 */
138#ifndef	MSIZE
139#define MSIZE		256		/* size of an mbuf */
140#endif	/* MSIZE */
141
142#ifndef	MCLSHIFT
143#define MCLSHIFT	11		/* convert bytes to mbuf clusters */
144#endif	/* MCLSHIFT */
145#define MCLBYTES	(1 << MCLSHIFT)	/* size of an mbuf cluster */
146
147/*
148 * Some macros for units conversion
149 */
150
151/* clicks to bytes */
152#define ctob(x)	((unsigned long)(x)<<PAGE_SHIFT)
153
154/* bytes to clicks */
155#define btoc(x)	(((unsigned long)(x)+PAGE_MASK)>>PAGE_SHIFT)
156
157/* bytes to disk blocks */
158#define btodb(bytes)	 		/* calculates (bytes / DEV_BSIZE) */ \
159	(daddr_t)((unsigned long)(bytes) >> DEV_BSHIFT)
160
161/* disk blocks to bytes */
162#define dbtob(db)			/* calculates (db * DEV_BSIZE) */ \
163	(off_t)((unsigned long)(db) << DEV_BSHIFT)
164
165/*
166 * Mach derived conversion macros
167 */
168#define round_page(x)		(((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK)
169#define trunc_page(x)		((unsigned long)(x) & ~PAGE_MASK)
170
171#define atop(x)			((unsigned long)(x) >> PAGE_SHIFT)
172#define ptoa(x)			((unsigned long)(x) << PAGE_SHIFT)
173
174#define sparc64_btop(x)		((unsigned long)(x) >> PAGE_SHIFT)
175#define sparc64_ptob(x)		((unsigned long)(x) << PAGE_SHIFT)
176
177#define	pgtok(x)		((unsigned long)(x) * (PAGE_SIZE / 1024))
178
179#define	CTASSERT(x)		_CTASSERT(x, __LINE__)
180#define	_CTASSERT(x, y)		__CTASSERT(x, y)
181#define	__CTASSERT(x, y)	typedef char __assert ## y[(x) ? 1 : -1]
182
183#endif /* !_MACHINE_PARAM_H_ */
184#endif /* !_NO_NAMESPACE_POLLUTION */
185