reactos/lib/drivers/oskittcp/include/freebsd/src/sys/machine/vmparam.h

   1 /*-
   2  * Copyright (c) 1990 The Regents of the University of California.
   3  * All rights reserved.
   4  * Copyright (c) 1994 John S. Dyson
   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. 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  *      from: @(#)vmparam.h     5.9 (Berkeley) 5/12/91
  39  */
  40
  41
  42 #ifndef _MACHINE_VMPARAM_H_
  43 #define _MACHINE_VMPARAM_H_ 1
  44
  45 /*
  46  * Machine dependent constants for 386.
  47  */
  48
  49 /*
  50  * Virtual memory related constants, all in bytes
  51  */
  52 #define MAXTSIZ         (16UL*1024*1024)        /* max text size */
  53 #ifndef DFLDSIZ
  54 #define DFLDSIZ         (64UL*1024*1024)        /* initial data size limit */
  55 #endif
  56 #ifndef MAXDSIZ
  57 #define MAXDSIZ         (128UL*1024*1024)       /* max data size */
  58 #endif
  59 #ifndef DFLSSIZ
  60 #define DFLSSIZ         (8UL*1024*1024)         /* initial stack size limit */
  61 #endif
  62 #ifndef MAXSSIZ
  63 #define MAXSSIZ         (64UL*1024*1024)        /* max stack size */
  64 #endif
  65 #ifndef SGROWSIZ
  66 #define SGROWSIZ        (128UL*1024)            /* amount to grow stack */
  67 #endif
  68
  69 #define USRTEXT         (1*NBPG)                /* base of user text XXX bogus */
  70
  71 /*
  72  * Default sizes of swap allocation chunks (see dmap.h).
  73  * The actual values may be changed in vminit() based on MAXDSIZ.
  74  * With MAXDSIZ of 16Mb and NDMAP of 38, dmmax will be 1024.
  75  */
  76 #define DMMIN   32                      /* smallest swap allocation */
  77 #define DMMAX   4096                    /* largest potential swap allocation */
  78 #define DMTEXT  1024                    /* swap allocation for text */
  79
  80 /*
  81  * Sizes of the system and user portions of the system page table.
  82  */
  83 #define SYSPTSIZE       (2*NPTEPG)
  84 #define USRPTSIZE       (2*NPTEPG)
  85
  86 /*
  87  * Size of the Shared Memory Pages page table.
  88  */
  89 #ifndef SHMMAXPGS
  90 #define SHMMAXPGS       1024            /* XXX until we have more kmap space */
  91 #endif
  92
  93 /*
  94  * Size of User Raw I/O map
  95  */
  96 #define USRIOSIZE       1024
  97
  98 /*
  99  * The time for a process to be blocked before being very swappable.
 100  * This is a number of seconds which the system takes as being a non-trivial
 101  * amount of real time.  You probably shouldn't change this;
 102  * it is used in subtle ways (fractions and multiples of it are, that is, like
 103  * half of a ``long time'', almost a long time, etc.)
 104  * It is related to human patience and other factors which don't really
 105  * change over time.
 106  */
 107 #define MAXSLP          20
 108
 109 /*
 110  * Mach derived constants
 111  */
 112
 113 /* user/kernel map constants */
 114 #ifdef OSKIT
 115 #define KERNBASE 0      /* XXX */
 116 #else
 117 #define KERNBASE ((0x400-1-NKPDE)*(NBPG*NPTEPG))
 118 #endif
 119
 120 #define VM_MIN_ADDRESS          ((vm_offset_t)0)
 121 #define VM_MAXUSER_ADDRESS      ((vm_offset_t)KERNBASE - (NBPG*(NPTEPG+UPAGES)))
 122 #define USRSTACK VM_MAXUSER_ADDRESS
 123 #define UPT_MIN_ADDRESS         ((vm_offset_t)KERNBASE - (NBPG*NPTEPG))
 124 #define UPT_MAX_ADDRESS         ((vm_offset_t)KERNBASE - (NBPG*(NKPDE+2)))
 125 #define VM_MAX_ADDRESS          UPT_MAX_ADDRESS
 126 #define VM_MIN_KERNEL_ADDRESS   ((vm_offset_t)KERNBASE - (NBPG*(NKPDE+2)))
 127 #define UPDT                    VM_MIN_KERNEL_ADDRESS
 128 #define KPT_MIN_ADDRESS         ((vm_offset_t)KERNBASE - NBPG*(NKPDE+1))
 129 #define KPT_MAX_ADDRESS         ((vm_offset_t)KERNBASE - NBPG)
 130 #define VM_MAX_KERNEL_ADDRESS   ((vm_offset_t)KERNBASE + NKPDE*NBPG*NPTEPG)
 131
 132 /* virtual sizes (bytes) for various kernel submaps */
 133 #define VM_KMEM_SIZE            (32 * 1024 * 1024)
 134 #define VM_PHYS_SIZE            (USRIOSIZE*CLBYTES)
 135
 136 #endif /* _MACHINE_VMPARAM_H_ */