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: releng/6.4/sys/sparc64/include/param.h 151399 2005-10-17 00:19:00Z kris $
31 */
32
33 /*
34 * Machine dependent constants for sparc64.
35 */
36
37 /*
38 * Round p (pointer or byte index) up to a correctly-aligned value
39 * for all data types (int, long, ...). The result is unsigned int
40 * and must be cast to any desired pointer type.
41 */
42 #ifndef _ALIGNBYTES
43 #define _ALIGNBYTES 0xf
44 #endif
45 #ifndef _ALIGN
46 #define _ALIGN(p) (((u_long)(p) + _ALIGNBYTES) & ~_ALIGNBYTES)
47 #endif
48
49 #ifndef _MACHINE
50 #define _MACHINE sparc64
51 #endif
52 #ifndef _MACHINE_ARCH
53 #define _MACHINE_ARCH sparc64
54 #endif
55
56 #ifndef _NO_NAMESPACE_POLLUTION
57
58 #ifndef _MACHINE_PARAM_H_
59 #define _MACHINE_PARAM_H_
60
61 #ifndef MACHINE
62 #define MACHINE "sparc64"
63 #endif
64 #ifndef MACHINE_ARCH
65 #define MACHINE_ARCH "sparc64"
66 #endif
67 #define MID_MACHINE MID_SPARC64
68
69 #ifdef SMP
70 #define MAXCPU 16
71 #else
72 #define MAXCPU 1
73 #endif /* SMP */
74
75 #define INT_SHIFT 2
76 #define PTR_SHIFT 3
77
78 #define ALIGNBYTES _ALIGNBYTES
79 #define ALIGN(p) _ALIGN(p)
80
81 #define PAGE_SHIFT_8K 13
82 #define PAGE_SIZE_8K (1L<<PAGE_SHIFT_8K)
83 #define PAGE_MASK_8K (PAGE_SIZE_8K-1)
84
85 #define PAGE_SHIFT_64K 16
86 #define PAGE_SIZE_64K (1L<<PAGE_SHIFT_64K)
87 #define PAGE_MASK_64K (PAGE_SIZE_64K-1)
88
89 #define PAGE_SHIFT_512K 19
90 #define PAGE_SIZE_512K (1L<<PAGE_SHIFT_512K)
91 #define PAGE_MASK_512K (PAGE_SIZE_512K-1)
92
93 #define PAGE_SHIFT_4M 22
94 #define PAGE_SIZE_4M (1L<<PAGE_SHIFT_4M)
95 #define PAGE_MASK_4M (PAGE_SIZE_4M-1)
96
97 #define PAGE_SHIFT_MIN PAGE_SHIFT_8K
98 #define PAGE_SIZE_MIN PAGE_SIZE_8K
99 #define PAGE_MASK_MIN PAGE_MASK_8K
100 #define PAGE_SHIFT PAGE_SHIFT_8K /* LOG2(PAGE_SIZE) */
101 #define PAGE_SIZE PAGE_SIZE_8K /* bytes/page */
102 #define PAGE_MASK PAGE_MASK_8K
103 #define PAGE_SHIFT_MAX PAGE_SHIFT_4M
104 #define PAGE_SIZE_MAX PAGE_SIZE_4M
105 #define PAGE_MASK_MAX PAGE_MASK_4M
106
107 #ifndef KSTACK_PAGES
108 #define KSTACK_PAGES 4 /* pages of kernel stack (with pcb) */
109 #endif
110 #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */
111 #define PCPU_PAGES 1
112
113 /*
114 * Ceiling on size of buffer cache (really only effects write queueing,
115 * the VM page cache is not effected), can be changed via
116 * the kern.maxbcache /boot/loader.conf variable.
117 */
118 #ifndef VM_BCACHE_SIZE_MAX
119 #define VM_BCACHE_SIZE_MAX (400 * 1024 * 1024)
120 #endif
121
122 /*
123 * Mach derived conversion macros
124 */
125 #define round_page(x) (((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK)
126 #define trunc_page(x) ((unsigned long)(x) & ~PAGE_MASK)
127
128 #define atop(x) ((unsigned long)(x) >> PAGE_SHIFT)
129 #define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT)
130
131 #define sparc64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT)
132 #define sparc64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT)
133
134 #define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024))
135
136 #endif /* !_MACHINE_PARAM_H_ */
137 #endif /* !_NO_NAMESPACE_POLLUTION */
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