param.h revision 300694 
1342619Stsoome/*-
2346476Skevans * Copyright (c) 2001 David E. O'Brien
3346476Skevans * Copyright (c) 1990 The Regents of the University of California.
4342619Stsoome * All rights reserved.
5342619Stsoome *
6342619Stsoome * This code is derived from software contributed to Berkeley by
7342619Stsoome * William Jolitz.
8342619Stsoome *
9342619Stsoome * Redistribution and use in source and binary forms, with or without
10342619Stsoome * modification, are permitted provided that the following conditions
11342619Stsoome * are met:
12342619Stsoome * 1. Redistributions of source code must retain the above copyright
13342619Stsoome *    notice, this list of conditions and the following disclaimer.
14342619Stsoome * 2. Redistributions in binary form must reproduce the above copyright
15342619Stsoome *    notice, this list of conditions and the following disclaimer in the
16342619Stsoome *    documentation and/or other materials provided with the distribution.
17342619Stsoome * 3. All advertising materials mentioning features or use of this software
18342619Stsoome *    must display the following acknowledgement:
19342619Stsoome *	This product includes software developed by the University of
20342619Stsoome *	California, Berkeley and its contributors.
21342619Stsoome * 4. Neither the name of the University nor the names of its contributors
22342619Stsoome *    may be used to endorse or promote products derived from this software
23342619Stsoome *    without specific prior written permission.
24342619Stsoome *
25342619Stsoome * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26342619Stsoome * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27342619Stsoome * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28342619Stsoome * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29342619Stsoome * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30342619Stsoome * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31342619Stsoome * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32342619Stsoome * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33342619Stsoome * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34342619Stsoome * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35342619Stsoome * SUCH DAMAGE.
36342619Stsoome *
37342619Stsoome *	from: @(#)param.h	5.8 (Berkeley) 6/28/91
38342619Stsoome * $FreeBSD: head/sys/arm/include/param.h 300694 2016-05-25 19:44:26Z ian $
39342619Stsoome */
40342619Stsoome
41342619Stsoome#ifndef _ARM_INCLUDE_PARAM_H_
42342619Stsoome#define	_ARM_INCLUDE_PARAM_H_
43342619Stsoome
44342619Stsoome/*
45342619Stsoome * Machine dependent constants for StrongARM
46342619Stsoome */
47342619Stsoome
48342619Stsoome#include <machine/_align.h>
49342619Stsoome
50342619Stsoome#define STACKALIGNBYTES	(8 - 1)
51342619Stsoome#define STACKALIGN(p)	((u_int)(p) & ~STACKALIGNBYTES)
52342619Stsoome
53342619Stsoome#define __PCI_REROUTE_INTERRUPT
54342619Stsoome
55342619Stsoome#if __ARM_ARCH >= 6
56342619Stsoome#define	_V6_SUFFIX "v6"
57342619Stsoome#else
58342619Stsoome#define	_V6_SUFFIX ""
59342619Stsoome#endif
60342619Stsoome
61342619Stsoome#ifdef __ARM_BIG_ENDIAN
62342619Stsoome#define	_EB_SUFFIX "eb"
63342619Stsoome#else
64342619Stsoome#define	_EB_SUFFIX ""
65342619Stsoome#endif
66342619Stsoome
67342619Stsoome#ifndef MACHINE
68#define	MACHINE		"arm"
69#endif
70#ifndef MACHINE_ARCH
71#define	MACHINE_ARCH	"arm" _V6_SUFFIX _EB_SUFFIX
72#endif
73
74#if defined(SMP) || defined(KLD_MODULE)
75#ifndef MAXCPU
76#define	MAXCPU		4
77#endif
78#else
79#define	MAXCPU		1
80#endif /* SMP || KLD_MODULE */
81
82#ifndef MAXMEMDOM
83#define	MAXMEMDOM	1
84#endif
85
86#define	ALIGNBYTES	_ALIGNBYTES
87#define	ALIGN(p)	_ALIGN(p)
88/*
89 * ALIGNED_POINTER is a boolean macro that checks whether an address
90 * is valid to fetch data elements of type t from on this architecture.
91 * This does not reflect the optimal alignment, just the possibility
92 * (within reasonable limits).
93 */
94#define	ALIGNED_POINTER(p, t)	((((unsigned)(p)) & (sizeof(t)-1)) == 0)
95
96/*
97 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
98 * architecture.  It should be used with appropriate caution.
99 */
100#define	CACHE_LINE_SHIFT	6
101#define	CACHE_LINE_SIZE		(1 << CACHE_LINE_SHIFT)
102
103#define	PAGE_SHIFT	12
104#define	PAGE_SIZE	(1 << PAGE_SHIFT)	/* Page size */
105#define	PAGE_MASK	(PAGE_SIZE - 1)
106
107#define PDR_SHIFT	20 /* log2(NBPDR) */
108#define NBPDR		(1 << PDR_SHIFT)
109#define PDRMASK		(NBPDR - 1)
110#define NPDEPG          (1 << (32 - PDR_SHIFT))
111
112#define	MAXPAGESIZES	2		/* maximum number of supported page sizes */
113
114#ifndef KSTACK_PAGES
115#define KSTACK_PAGES    2
116#endif /* !KSTACK_PAGES */
117
118#ifndef FPCONTEXTSIZE
119#define FPCONTEXTSIZE	(0x100)
120#endif
121
122#ifndef KSTACK_GUARD_PAGES
123#define KSTACK_GUARD_PAGES	1
124#endif /* !KSTACK_GUARD_PAGES */
125
126#define USPACE_SVC_STACK_TOP		(kstack_pages * PAGE_SIZE)
127
128/*
129 * Mach derived conversion macros
130 */
131#define	trunc_page(x)		((x) & ~PAGE_MASK)
132#define	round_page(x)		(((x) + PAGE_MASK) & ~PAGE_MASK)
133#define	trunc_1mpage(x)		((unsigned)(x) & ~PDRMASK)
134#define	round_1mpage(x)		((((unsigned)(x)) + PDRMASK) & ~PDRMASK)
135
136#define	atop(x)			((unsigned)(x) >> PAGE_SHIFT)
137#define	ptoa(x)			((unsigned)(x) << PAGE_SHIFT)
138
139#define	arm32_btop(x)		((unsigned)(x) >> PAGE_SHIFT)
140#define	arm32_ptob(x)		((unsigned)(x) << PAGE_SHIFT)
141
142#define	pgtok(x)		((x) * (PAGE_SIZE / 1024))
143
144#endif /* !_ARM_INCLUDE_PARAM_H_ */
145