param.h revision 191276 
1336817Sdim/*-
2336817Sdim * Copyright (c) 2001 David E. O'Brien
3353358Sdim * Copyright (c) 1990 The Regents of the University of California.
4353358Sdim * All rights reserved.
5353358Sdim *
6336817Sdim * This code is derived from software contributed to Berkeley by
7336817Sdim * William Jolitz.
8336817Sdim *
9336817Sdim * Redistribution and use in source and binary forms, with or without
10336817Sdim * modification, are permitted provided that the following conditions
11336817Sdim * are met:
12336817Sdim * 1. Redistributions of source code must retain the above copyright
13336817Sdim *    notice, this list of conditions and the following disclaimer.
14336817Sdim * 2. Redistributions in binary form must reproduce the above copyright
15336817Sdim *    notice, this list of conditions and the following disclaimer in the
16336817Sdim *    documentation and/or other materials provided with the distribution.
17336817Sdim * 3. All advertising materials mentioning features or use of this software
18336817Sdim *    must display the following acknowledgement:
19336817Sdim *	This product includes software developed by the University of
20336817Sdim *	California, Berkeley and its contributors.
21336817Sdim * 4. Neither the name of the University nor the names of its contributors
22336817Sdim *    may be used to endorse or promote products derived from this software
23336817Sdim *    without specific prior written permission.
24336817Sdim *
25336817Sdim * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26336817Sdim * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27336817Sdim * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28336817Sdim * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29336817Sdim * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30336817Sdim * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31336817Sdim * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32336817Sdim * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33336817Sdim * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34336817Sdim * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35336817Sdim * SUCH DAMAGE.
36336817Sdim *
37336817Sdim *	from: @(#)param.h	5.8 (Berkeley) 6/28/91
38336817Sdim * $FreeBSD: head/sys/arm/include/param.h 191276 2009-04-19 20:19:13Z rwatson $
39336817Sdim */
40336817Sdim
41/*
42 * Machine dependent constants for StrongARM
43 */
44
45/*
46 * Round p (pointer or byte index) up to a correctly-aligned value
47 * for all data types (int, long, ...).   The result is unsigned int
48 * and must be cast to any desired pointer type.
49 */
50#ifndef _ALIGNBYTES
51#define	_ALIGNBYTES	(sizeof(int) - 1)
52#endif
53#ifndef _ALIGN
54#define	_ALIGN(p)	(((unsigned)(p) + _ALIGNBYTES) & ~_ALIGNBYTES)
55#endif
56
57#define STACKALIGNBYTES	(8 - 1)
58#define STACKALIGN(p)	((u_int)(p) & ~STACKALIGNBYTES)
59
60#ifndef _NO_NAMESPACE_POLLUTION
61
62#define __PCI_REROUTE_INTERRUPT
63
64#ifndef _MACHINE_PARAM_H_
65#define	_MACHINE_PARAM_H_
66
67#ifndef MACHINE
68#define	MACHINE		"arm"
69#endif
70#ifndef MACHINE_ARCH
71#define	MACHINE_ARCH	"arm"
72#endif
73#define	MID_MACHINE	MID_ARM6
74
75#if defined(SMP) || defined(KLD_MODULE)
76#define	MAXCPU		2
77#else
78#define	MAXCPU		1
79#endif /* SMP || KLD_MODULE */
80
81#define	ALIGNBYTES	_ALIGNBYTES
82#define	ALIGN(p)	_ALIGN(p)
83
84#ifndef CACHE_LINE_SHIFT
85#define	CACHE_LINE_SHIFT	6
86#endif
87#define	CACHE_LINE_SIZE		(1 << CACHE_LINE_SHIFT)
88
89#define	PAGE_SHIFT	12
90#define	PAGE_SIZE	(1 << PAGE_SHIFT)	/* Page size */
91#define	PAGE_MASK	(PAGE_SIZE - 1)
92#define	NPTEPG		(PAGE_SIZE/(sizeof (pt_entry_t)))
93
94#define PDR_SHIFT	20 /* log2(NBPDR) */
95#define NBPDR		(1 << PDR_SHIFT)
96#define NPDEPG          (1 << (32 - PDR_SHIFT))
97
98#ifndef KSTACK_PAGES
99#define KSTACK_PAGES    2
100#endif /* !KSTACK_PAGES */
101
102#ifndef FPCONTEXTSIZE
103#define FPCONTEXTSIZE	(0x100)
104#endif
105
106#ifndef KSTACK_GUARD_PAGES
107#define KSTACK_GUARD_PAGES	1
108#endif /* !KSTACK_GUARD_PAGES */
109
110#define USPACE_SVC_STACK_TOP		KSTACK_PAGES * PAGE_SIZE
111#define USPACE_SVC_STACK_BOTTOM		(USPACE_SVC_STACK_TOP - 0x1000)
112#define USPACE_UNDEF_STACK_TOP		(USPACE_SVC_STACK_BOTTOM - 0x10)
113#define USPACE_UNDEF_STACK_BOTTOM	(FPCONTEXTSIZE + 10)
114/*
115 * Mach derived conversion macros
116 */
117#define	trunc_page(x)		((x) & ~PAGE_MASK)
118#define	round_page(x)		(((x) + PAGE_MASK) & ~PAGE_MASK)
119#define	trunc_4mpage(x)		((unsigned)(x) & ~PDRMASK)
120#define	round_4mpage(x)		((((unsigned)(x)) + PDRMASK) & ~PDRMASK)
121
122#define	atop(x)			((unsigned)(x) >> PAGE_SHIFT)
123#define	ptoa(x)			((unsigned)(x) << PAGE_SHIFT)
124
125#define	arm32_btop(x)		((unsigned)(x) >> PAGE_SHIFT)
126#define	arm32_ptob(x)		((unsigned)(x) << PAGE_SHIFT)
127
128#define	pgtok(x)		((x) * (PAGE_SIZE / 1024))
129
130#endif /* !_MACHINE_PARAM_H_ */
131#endif /* !_NO_NAMESPACE_POLLUTION */
132