sys/arch/amd64/include/vmparam.h

   1 /*      $NetBSD: vmparam.h,v 1.21 2009/03/06 20:31:47 joerg Exp $       */
   2
   3 /*-
   4  * Copyright (c) 1990 The Regents of the University of California.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * William Jolitz.
   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. Neither the name of the University nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  *
  34  *      @(#)vmparam.h   5.9 (Berkeley) 5/12/91
  35  */
  36
  37 #ifndef _X86_64_VMPARAM_H_
  38 #define _X86_64_VMPARAM_H_
  39
  40 #ifdef __x86_64__
  41
  42 #include <sys/tree.h>
  43 #include <sys/mutex.h>
  44 #ifdef _KERNEL_OPT
  45 #include "opt_xen.h"
  46 #endif
  47
  48 /*
  49  * Machine dependent constants for 386.
  50  */
  51
  52 /*
  53  * Page size on the amd64 s not variable in the traditional sense.
  54  * We override the PAGE_* definitions to compile-time constants.
  55  */
  56 #define PAGE_SHIFT      12
  57 #define PAGE_SIZE       (1 << PAGE_SHIFT)
  58 #define PAGE_MASK       (PAGE_SIZE - 1)
  59
  60 /*
  61  * USRSTACK is the top (end) of the user stack. Immediately above the
  62  * user stack resides the user structure, which is UPAGES long and contains
  63  * the kernel stack.
  64  *
  65  * Immediately after the user structure is the page table map, and then
  66  * kernel address space.
  67  */
  68 #define USRSTACK        VM_MAXUSER_ADDRESS
  69
  70 #define USRSTACK32      VM_MAXUSER_ADDRESS32
  71
  72 /*
  73  * Virtual memory related constants, all in bytes
  74  */
  75 #define MAXTSIZ         (64*1024*1024)          /* max text size */
  76 #ifndef DFLDSIZ
  77 #define DFLDSIZ         (256*1024*1024)         /* initial data size limit */
  78 #endif
  79 #ifndef MAXDSIZ
  80 #define MAXDSIZ         (8L*1024*1024*1024)     /* max data size */
  81 #endif
  82 #ifndef DFLSSIZ
  83 #define DFLSSIZ         (2*1024*1024)           /* initial stack size limit */
  84 #endif
  85 #ifndef MAXSSIZ
  86 #define MAXSSIZ         (32*1024*1024)          /* max stack size */
  87 #endif
  88
  89 /*
  90  * 32bit memory related constants.
  91  */
  92
  93 #define MAXTSIZ32       (64*1024*1024)
  94 #ifndef DFLDSIZ32
  95 #define DFLDSIZ32       (256*1024*1024)         /* initial data size limit */
  96 #endif
  97 #ifndef MAXDSIZ32
  98 #define MAXDSIZ32       (3U*1024*1024*1024)     /* max data size */
  99 #endif
 100 #ifndef DFLSSIZ32
 101 #define DFLSSIZ32       (2*1024*1024)           /* initial stack size limit */
 102 #endif
 103 #ifndef MAXSSIZ32
 104 #define MAXSSIZ32       (64*1024*1024)          /* max stack size */
 105 #endif
 106
 107 /*
 108  * Size of User Raw I/O map
 109  */
 110 #define USRIOSIZE       300
 111
 112 /*
 113  * Mach derived constants
 114  */
 115
 116 /* user/kernel map constants */
 117 #define VM_MIN_ADDRESS          0
 118 #define VM_MAXUSER_ADDRESS      0x00007f8000000000
 119 #define VM_MAX_ADDRESS          0x00007fbfdfeff000
 120 #ifndef XEN
 121 #define VM_MIN_KERNEL_ADDRESS   0xffff800000000000
 122 #else /* XEN */
 123 #define VM_MIN_KERNEL_ADDRESS   0xffffa00000000000
 124 #endif
 125 #define VM_MAX_KERNEL_ADDRESS   0xffffff8000000000
 126
 127 #define VM_MAXUSER_ADDRESS32    0xfffff000
 128
 129 /*
 130  * The address to which unspecified mapping requests default
 131  */
 132 #ifdef _KERNEL_OPT
 133 #include "opt_uvm.h"
 134 #endif
 135 #define __USE_TOPDOWN_VM
 136 #define VM_DEFAULT_ADDRESS(da, sz) \
 137         trunc_page(USRSTACK - MAXSSIZ - (sz))
 138 #define VM_DEFAULT_ADDRESS32(da, sz) \
 139         trunc_page(USRSTACK32 - MAXSSIZ32 - (sz))
 140
 141 /*
 142  * XXXfvdl we have plenty of KVM now, remove this.
 143  */
 144 #ifndef VM_MAX_KERNEL_BUF
 145 #define VM_MAX_KERNEL_BUF       (384 * 1024 * 1024)
 146 #endif
 147
 148 /* virtual sizes (bytes) for various kernel submaps */
 149 #define VM_PHYS_SIZE            (USRIOSIZE*PAGE_SIZE)
 150
 151 #define VM_PHYSSEG_MAX          10      /* 1 "hole" + 9 free lists */
 152 #define VM_PHYSSEG_STRAT        VM_PSTRAT_BIGFIRST
 153 #define VM_PHYSSEG_NOADD                /* can't add RAM after vm_mem_init */
 154
 155 #define VM_NFREELIST            3
 156 #define VM_FREELIST_DEFAULT     0
 157 #define VM_FREELIST_FIRST4G     1
 158 #define VM_FREELIST_FIRST16     2
 159
 160 #include <x86/pmap_pv.h>
 161
 162 #define __HAVE_VM_PAGE_MD
 163 #define VM_MDPAGE_INIT(pg) \
 164         memset(&(pg)->mdpage, 0, sizeof((pg)->mdpage)); \
 165         PMAP_PAGE_INIT(&(pg)->mdpage.mp_pp)
 166
 167 struct vm_page_md {
 168         struct pmap_page mp_pp;
 169 };
 170
 171 #else   /*      !__x86_64__     */
 172
 173 #include <i386/vmparam.h>
 174
 175 #endif  /*      __x86_64__      */
 176
 177 #endif /* _X86_64_VMPARAM_H_ */