sys/arch/luna68k/include/vmparam.h

   1 /*      $NetBSD: vmparam.h,v 1.14 2009/12/08 13:47:27 tsutsui Exp $     */
   2
   3 /*
   4  * Copyright (c) 1982, 1986, 1990, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * This code is derived from software contributed to Berkeley by
   8  * the Systems Programming Group of the University of Utah Computer
   9  * Science Department.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  *
  35  * from: Utah $Hdr: vmparam.h 1.16 91/01/18$
  36  *
  37  *      @(#)vmparam.h   8.2 (Berkeley) 4/19/94
  38  */
  39 /*
  40  * Copyright (c) 1988 University of Utah.
  41  *
  42  * This code is derived from software contributed to Berkeley by
  43  * the Systems Programming Group of the University of Utah Computer
  44  * Science Department.
  45  *
  46  * Redistribution and use in source and binary forms, with or without
  47  * modification, are permitted provided that the following conditions
  48  * are met:
  49  * 1. Redistributions of source code must retain the above copyright
  50  *    notice, this list of conditions and the following disclaimer.
  51  * 2. Redistributions in binary form must reproduce the above copyright
  52  *    notice, this list of conditions and the following disclaimer in the
  53  *    documentation and/or other materials provided with the distribution.
  54  * 3. All advertising materials mentioning features or use of this software
  55  *    must display the following acknowledgement:
  56  *      This product includes software developed by the University of
  57  *      California, Berkeley and its contributors.
  58  * 4. Neither the name of the University nor the names of its contributors
  59  *    may be used to endorse or promote products derived from this software
  60  *    without specific prior written permission.
  61  *
  62  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  63  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  64  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  65  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  66  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  67  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  68  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  69  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  70  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  71  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  72  * SUCH DAMAGE.
  73  *
  74  * from: Utah $Hdr: vmparam.h 1.16 91/01/18$
  75  *
  76  *      @(#)vmparam.h   8.2 (Berkeley) 4/19/94
  77  */
  78
  79 #ifndef _MACHINE_VMPARAM_H_
  80 #define _MACHINE_VMPARAM_H_
  81
  82 /*
  83  * We use 4K pages on the luna68k.  Override the PAGE_* definitions
  84  * to be compile-time constants.
  85  */
  86 #define PAGE_SHIFT      PGSHIFT
  87 #define PAGE_SIZE       (1 << PAGE_SHIFT)
  88 #define PAGE_MASK       (PAGE_SIZE - 1)
  89
  90 /*
  91  * USRSTACK is the top (end) of the user stack.
  92  */
  93 #define USRSTACK        VM_MAXUSER_ADDRESS
  94
  95 /*
  96  * Virtual memory related constants, all in bytes
  97  */
  98 #ifndef MAXTSIZ
  99 #define MAXTSIZ         (8*1024*1024)           /* max text size */
 100 #endif
 101 #ifndef DFLDSIZ
 102 #define DFLDSIZ         (16*1024*1024)          /* initial data size limit */
 103 #endif
 104 #ifndef MAXDSIZ
 105 #define MAXDSIZ         (64*1024*1024)          /* max data size */
 106 #endif
 107 #ifndef DFLSSIZ
 108 #define DFLSSIZ         (512*1024)              /* initial stack size limit */
 109 #endif
 110 #ifndef MAXSSIZ
 111 #define MAXSSIZ         MAXDSIZ                 /* max stack size */
 112 #endif
 113
 114 /*
 115  * Sizes of the system and user portions of the system page table.
 116  */
 117 /* SYSPTSIZE IS SILLY; IT SHOULD BE COMPUTED AT BOOT TIME */
 118 #define SYSPTSIZE       (2 * NPTEPG)    /* 8mb */
 119 #define USRPTSIZE       (1 * NPTEPG)    /* 4mb */
 120
 121 /*
 122  * PTEs for mapping user space into the kernel for phyio operations.
 123  * One page is enough to handle 4Mb of simultaneous raw IO operations.
 124  */
 125 #ifndef USRIOSIZE
 126 #define USRIOSIZE       (1 * NPTEPG)    /* 4mb */
 127 #endif
 128
 129 /*
 130  * Mach derived constants
 131  */
 132
 133 /* user/kernel map constants */
 134 #define VM_MIN_ADDRESS          ((vaddr_t)0)
 135 #define VM_MAXUSER_ADDRESS      ((vaddr_t)0xFFFC0000)
 136 #define VM_MAX_ADDRESS          ((vaddr_t)0xFFFC0000)
 137 #define VM_MIN_KERNEL_ADDRESS   ((vaddr_t)0)
 138 #define VM_MAX_KERNEL_ADDRESS   ((vaddr_t)(0x40000000-PAGE_SIZE*NPTEPG))
 139
 140 /* virtual sizes (bytes) for various kernel submaps */
 141 #define VM_MBUF_SIZE            (NMBCLUSTERS*MCLBYTES)
 142 #define VM_PHYS_SIZE            (USRIOSIZE*PAGE_SIZE)
 143
 144 /* # of kernel PT pages (initial only, can grow dynamically) */
 145 #define VM_KERNEL_PT_PAGES      ((vsize_t)2)            /* XXX: SYSPTSIZE */
 146
 147 /*
 148  * Constants which control the way the VM system deals with memory segments.
 149  * Only one physical contigous memory segment.
 150  */
 151 #define VM_PHYSSEG_MAX          1
 152 #define VM_PHYSSEG_STRAT        VM_PSTRAT_BSEARCH
 153 #define VM_PHYSSEG_NOADD
 154
 155 #define VM_NFREELIST            1
 156 #define VM_FREELIST_DEFAULT     0
 157
 158 #define __HAVE_PMAP_PHYSSEG
 159
 160 /*
 161  * pmap-specific data stored in the vm_physmem[] array.
 162  */
 163 struct pmap_physseg {
 164         struct pv_header *pvheader;     /* pv table for this seg */
 165 };
 166
 167 #endif /* _MACHINE_VMPARAM_H_ */