The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/sparc64/include/param.h

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    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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