2 * Copyright (c) 1990 The Regents of the University of California.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
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29 * from: @(#)param.h 5.8 (Berkeley) 6/28/91
33 #ifndef _SPARC64_INCLUDE_PARAM_H_
34 #define _SPARC64_INCLUDE_PARAM_H_
37 * Machine dependent constants for sparc64.
40 #include <machine/_align.h>
42 #define __PCI_BAR_ZERO_VALID
45 #define MACHINE "sparc64"
48 #define MACHINE_ARCH "sparc64"
50 #define MID_MACHINE MID_SPARC64
52 #if defined(SMP) || defined(KLD_MODULE)
58 #endif /* SMP || KLD_MODULE */
63 #define ALIGNBYTES _ALIGNBYTES
64 #define ALIGN(p) _ALIGN(p)
66 * ALIGNED_POINTER is a boolean macro that checks whether an address
67 * is valid to fetch data elements of type t from on this architecture.
68 * This does not reflect the optimal alignment, just the possibility
69 * (within reasonable limits).
71 #define ALIGNED_POINTER(p, t) ((((u_long)(p)) & (sizeof (t) - 1)) == 0)
74 * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
75 * architecture. It should be used with appropriate caution.
77 #define CACHE_LINE_SHIFT 7
78 #define CACHE_LINE_SIZE (1 << CACHE_LINE_SHIFT)
80 #define PAGE_SHIFT_8K 13
81 #define PAGE_SIZE_8K (1L<<PAGE_SHIFT_8K)
82 #define PAGE_MASK_8K (PAGE_SIZE_8K-1)
84 #define PAGE_SHIFT_64K 16
85 #define PAGE_SIZE_64K (1L<<PAGE_SHIFT_64K)
86 #define PAGE_MASK_64K (PAGE_SIZE_64K-1)
88 #define PAGE_SHIFT_512K 19
89 #define PAGE_SIZE_512K (1L<<PAGE_SHIFT_512K)
90 #define PAGE_MASK_512K (PAGE_SIZE_512K-1)
92 #define PAGE_SHIFT_4M 22
93 #define PAGE_SIZE_4M (1L<<PAGE_SHIFT_4M)
94 #define PAGE_MASK_4M (PAGE_SIZE_4M-1)
96 #define PAGE_SHIFT_32M 25
97 #define PAGE_SIZE_32M (1L<<PAGE_SHIFT_32M)
98 #define PAGE_MASK_32M (PAGE_SIZE_32M-1)
100 #define PAGE_SHIFT_256M 28
101 #define PAGE_SIZE_256M (1L<<PAGE_SHIFT_256M)
102 #define PAGE_MASK_256M (PAGE_SIZE_256M-1)
104 #define PAGE_SHIFT_MIN PAGE_SHIFT_8K
105 #define PAGE_SIZE_MIN PAGE_SIZE_8K
106 #define PAGE_MASK_MIN PAGE_MASK_8K
107 #define PAGE_SHIFT PAGE_SHIFT_8K /* LOG2(PAGE_SIZE) */
108 #define PAGE_SIZE PAGE_SIZE_8K /* bytes/page */
109 #define PAGE_MASK PAGE_MASK_8K
110 #define PAGE_SHIFT_MAX PAGE_SHIFT_4M
111 #define PAGE_SIZE_MAX PAGE_SIZE_4M
112 #define PAGE_MASK_MAX PAGE_MASK_4M
114 #define MAXPAGESIZES 1 /* maximum number of supported page sizes */
117 #define KSTACK_PAGES 4 /* pages of kernel stack (with pcb) */
119 #define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */
123 * Ceiling on size of buffer cache (really only effects write queueing,
124 * the VM page cache is not effected), can be changed via
125 * the kern.maxbcache /boot/loader.conf variable.
127 #ifndef VM_BCACHE_SIZE_MAX
128 #define VM_BCACHE_SIZE_MAX (400 * 1024 * 1024)
132 * Mach derived conversion macros
134 #define round_page(x) (((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK)
135 #define trunc_page(x) ((unsigned long)(x) & ~PAGE_MASK)
137 #define atop(x) ((unsigned long)(x) >> PAGE_SHIFT)
138 #define ptoa(x) ((unsigned long)(x) << PAGE_SHIFT)
140 #define sparc64_btop(x) ((unsigned long)(x) >> PAGE_SHIFT)
141 #define sparc64_ptob(x) ((unsigned long)(x) << PAGE_SHIFT)
143 #define pgtok(x) ((unsigned long)(x) * (PAGE_SIZE / 1024))
145 #endif /* !_SPARC64_INCLUDE_PARAM_H_ */