sys/sparc64/include/param.h

   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  * $FreeBSD$
  31  */
  32
  33 #ifndef _SPARC64_INCLUDE_PARAM_H_
  34 #define _SPARC64_INCLUDE_PARAM_H_
  35
  36 /*
  37  * Machine dependent constants for sparc64.
  38  */
  39
  40 #include <machine/_align.h>
  41
  42 #define __PCI_BAR_ZERO_VALID
  43
  44 #ifndef MACHINE
  45 #define MACHINE         "sparc64"
  46 #endif
  47 #ifndef MACHINE_ARCH
  48 #define MACHINE_ARCH    "sparc64"
  49 #endif
  50 #define MID_MACHINE     MID_SPARC64
  51
  52 #if defined(SMP) || defined(KLD_MODULE)
  53 #ifndef MAXCPU
  54 #define MAXCPU          64
  55 #endif
  56 #else
  57 #define MAXCPU          1
  58 #endif /* SMP || KLD_MODULE */
  59
  60 #ifndef MAXMEMDOM
  61 #define MAXMEMDOM       1
  62 #endif
  63
  64 #define INT_SHIFT       2
  65 #define PTR_SHIFT       3
  66
  67 #define ALIGNBYTES      _ALIGNBYTES
  68 #define ALIGN(p)        _ALIGN(p)
  69 /*
  70  * ALIGNED_POINTER is a boolean macro that checks whether an address
  71  * is valid to fetch data elements of type t from on this architecture.
  72  * This does not reflect the optimal alignment, just the possibility
  73  * (within reasonable limits).
  74  */
  75 #define ALIGNED_POINTER(p, t)   ((((u_long)(p)) & (sizeof (t) - 1)) == 0)
  76
  77 /*
  78  * CACHE_LINE_SIZE is the compile-time maximum cache line size for an
  79  * architecture.  It should be used with appropriate caution.
  80  */
  81 #define CACHE_LINE_SHIFT        7
  82 #define CACHE_LINE_SIZE         (1 << CACHE_LINE_SHIFT)
  83
  84 #define PAGE_SHIFT_8K   13
  85 #define PAGE_SIZE_8K    (1L<<PAGE_SHIFT_8K)
  86 #define PAGE_MASK_8K    (PAGE_SIZE_8K-1)
  87
  88 #define PAGE_SHIFT_64K  16
  89 #define PAGE_SIZE_64K   (1L<<PAGE_SHIFT_64K)
  90 #define PAGE_MASK_64K   (PAGE_SIZE_64K-1)
  91
  92 #define PAGE_SHIFT_512K 19
  93 #define PAGE_SIZE_512K  (1L<<PAGE_SHIFT_512K)
  94 #define PAGE_MASK_512K  (PAGE_SIZE_512K-1)
  95
  96 #define PAGE_SHIFT_4M   22
  97 #define PAGE_SIZE_4M    (1L<<PAGE_SHIFT_4M)
  98 #define PAGE_MASK_4M    (PAGE_SIZE_4M-1)
  99
 100 #define PAGE_SHIFT_32M  25
 101 #define PAGE_SIZE_32M   (1L<<PAGE_SHIFT_32M)
 102 #define PAGE_MASK_32M   (PAGE_SIZE_32M-1)
 103
 104 #define PAGE_SHIFT_256M 28
 105 #define PAGE_SIZE_256M  (1L<<PAGE_SHIFT_256M)
 106 #define PAGE_MASK_256M  (PAGE_SIZE_256M-1)
 107
 108 #define PAGE_SHIFT_MIN  PAGE_SHIFT_8K
 109 #define PAGE_SIZE_MIN   PAGE_SIZE_8K
 110 #define PAGE_MASK_MIN   PAGE_MASK_8K
 111 #define PAGE_SHIFT      PAGE_SHIFT_8K   /* LOG2(PAGE_SIZE) */
 112 #define PAGE_SIZE       PAGE_SIZE_8K    /* bytes/page */
 113 #define PAGE_MASK       PAGE_MASK_8K
 114 #define PAGE_SHIFT_MAX  PAGE_SHIFT_4M
 115 #define PAGE_SIZE_MAX   PAGE_SIZE_4M
 116 #define PAGE_MASK_MAX   PAGE_MASK_4M
 117
 118 #define MAXPAGESIZES    1               /* maximum number of supported page sizes */
 119
 120 #ifndef KSTACK_PAGES
 121 #define KSTACK_PAGES            4       /* pages of kernel stack (with pcb) */
 122 #endif
 123 #define KSTACK_GUARD_PAGES      1       /* pages of kstack guard; 0 disables */
 124 #define PCPU_PAGES              1
 125
 126 /*
 127  * Ceiling on size of buffer cache (really only effects write queueing,
 128  * the VM page cache is not effected), can be changed via
 129  * the kern.maxbcache /boot/loader.conf variable.
 130  */
 131 #ifndef VM_BCACHE_SIZE_MAX
 132 #define VM_BCACHE_SIZE_MAX      (400 * 1024 * 1024)
 133 #endif
 134
 135 /*
 136  * Mach derived conversion macros
 137  */
 138 #define round_page(x)           (((unsigned long)(x) + PAGE_MASK) & ~PAGE_MASK)
 139 #define trunc_page(x)           ((unsigned long)(x) & ~PAGE_MASK)
 140
 141 #define atop(x)                 ((unsigned long)(x) >> PAGE_SHIFT)
 142 #define ptoa(x)                 ((unsigned long)(x) << PAGE_SHIFT)
 143
 144 #define sparc64_btop(x)         ((unsigned long)(x) >> PAGE_SHIFT)
 145 #define sparc64_ptob(x)         ((unsigned long)(x) << PAGE_SHIFT)
 146
 147 #define pgtok(x)                ((unsigned long)(x) * (PAGE_SIZE / 1024))
 148
 149 #ifdef _KERNEL
 150 #define NO_FUEWORD      1
 151 #endif
 152
 153 #endif /* !_SPARC64_INCLUDE_PARAM_H_ */