1 /*-
2 * Copyright (c) 2002 David E. O'Brien. All rights reserved.
3 * Copyright (c) 1992, 1993
4 * The Regents of the University of California. 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 and Ralph Campbell.
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 * @(#)param.h 8.1 (Berkeley) 6/10/93
39 * $FreeBSD: src/sys/amd64/include/param.h,v 1.24 2008/10/01 21:59:04 jhb Exp $
40 */
41
42 /*
43 * Machine dependent constants for AMD64.
44 */
45
46 /*
47 * Round p (pointer or byte index) up to a correctly-aligned value
48 * for all data types (int, long, ...). The result is u_long and
49 * must be cast to any desired pointer type.
50 *
51 * ALIGNED_POINTER is a boolean macro that checks whether an address
52 * is valid to fetch data elements of type t from on this architecture.
53 * This does not reflect the optimal alignment, just the possibility
54 * (within reasonable limits).
55 *
56 */
57 #ifndef _ALIGNBYTES
58 #define _ALIGNBYTES (sizeof(long) - 1)
59 #endif
60 #ifndef _ALIGN
61 #define _ALIGN(p) (((u_long)(p) + _ALIGNBYTES) &~ _ALIGNBYTES)
62 #endif
63 #ifndef _ALIGNED_POINTER
64 #define _ALIGNED_POINTER(p,t) ((((u_long)(p)) & (sizeof(t)-1)) == 0)
65 #endif
66
67 #ifndef _NO_NAMESPACE_POLLUTION
68
69 #define __HAVE_ACPI
70 #define __PCI_REROUTE_INTERRUPT
71
72 #ifndef _MACHINE_PARAM_H_
73 #define _MACHINE_PARAM_H_
74
75 #ifndef MACHINE
76 #define MACHINE "amd64"
77 #endif
78 #ifndef MACHINE_ARCH
79 #define MACHINE_ARCH "amd64"
80 #endif
81
82 #if defined(SMP) || defined(KLD_MODULE)
83 #define MAXCPU 32
84 #else
85 #define MAXCPU 1
86 #endif
87
88 #define ALIGNBYTES _ALIGNBYTES
89 #define ALIGN(p) _ALIGN(p)
90 #define ALIGNED_POINTER(p,t) _ALIGNED_POINTER(p,t)
91
92
93 /* Size of the level 1 page table units */
94 #define NPTEPG (PAGE_SIZE/(sizeof (pt_entry_t)))
95 #define NPTEPGSHIFT 9 /* LOG2(NPTEPG) */
96 #define PAGE_SHIFT 12 /* LOG2(PAGE_SIZE) */
97 #define PAGE_SIZE (1<<PAGE_SHIFT) /* bytes/page */
98 #define PAGE_MASK (PAGE_SIZE-1)
99 /* Size of the level 2 page directory units */
100 #define NPDEPG (PAGE_SIZE/(sizeof (pd_entry_t)))
101 #define NPDEPGSHIFT 9 /* LOG2(NPDEPG) */
102 #define PDRSHIFT 21 /* LOG2(NBPDR) */
103 #define NBPDR (1<<PDRSHIFT) /* bytes/page dir */
104 #define PDRMASK (NBPDR-1)
105 /* Size of the level 3 page directory pointer table units */
106 #define NPDPEPG (PAGE_SIZE/(sizeof (pdp_entry_t)))
107 #define NPDPEPGSHIFT 9 /* LOG2(NPDPEPG) */
108 #define PDPSHIFT 30 /* LOG2(NBPDP) */
109 #define NBPDP (1<<PDPSHIFT) /* bytes/page dir ptr table */
110 #define PDPMASK (NBPDP-1)
111 /* Size of the level 4 page-map level-4 table units */
112 #define NPML4EPG (PAGE_SIZE/(sizeof (pml4_entry_t)))
113 #define NPML4EPGSHIFT 9 /* LOG2(NPML4EPG) */
114 #define PML4SHIFT 39 /* LOG2(NBPML4) */
115 #define NBPML4 (1ul<<PML4SHIFT)/* bytes/page map lev4 table */
116 #define PML4MASK (NBPML4-1)
117
118 #define IOPAGES 2 /* pages of i/o permission bitmap */
119
120 #ifndef KSTACK_PAGES
121 #define KSTACK_PAGES 4 /* pages of kstack (with pcb) */
122 #endif
123 #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */
124
125 /*
126 * Ceiling on amount of swblock kva space, can be changed via
127 * the kern.maxswzone /boot/loader.conf variable.
128 */
129 #ifndef VM_SWZONE_SIZE_MAX
130 #define VM_SWZONE_SIZE_MAX (32 * 1024 * 1024)
131 #endif
132
133 /*
134 * Ceiling on size of buffer cache (really only effects write queueing,
135 * the VM page cache is not effected), can be changed via
136 * the kern.maxbcache /boot/loader.conf variable.
137 */
138 #ifndef VM_BCACHE_SIZE_MAX
139 #define VM_BCACHE_SIZE_MAX (1024 * 1024 * 1024)
140 #endif
141
142 /*
143 * Mach derived conversion macros
144 */
145 #define round_page(x) ((((unsigned long)(x)) + PAGE_MASK) & ~(PAGE_MASK))
146 #define trunc_page(x) ((unsigned long)(x) & ~(PAGE_MASK))
147 #define trunc_2mpage(x) ((unsigned long)(x) & ~PDRMASK)
148 #define round_2mpage(x) ((((unsigned long)(x)) + PDRMASK) & ~PDRMASK)
149 #define trunc_1gpage(x) ((unsigned long)(x) & ~PDPMASK)
150
151 #define atop(x) ((unsigned long)(x) >> PAGE_SHIFT)
152 #define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT)
153
154 #define amd64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT)
155 #define amd64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT)
156
157 #define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024))
158
159 #endif /* !_MACHINE_PARAM_H_ */
160 #endif /* !_NO_NAMESPACE_POLLUTION */
161 Cache object: 61af69f3b82005f4e92438134c6fd16d
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