sys/arch/atari/include/pmap.h

   1 /*      $NetBSD: pmap.h,v 1.40 2009/03/13 19:08:20 abs Exp $    */
   2
   3 /*
   4  * Copyright (c) 1991 Regents of the University of California.
   5  * 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  *      @(#)pmap.h      7.6 (Berkeley) 5/10/91
  36  */
  37
  38 /*
  39  * Copyright (c) 1987 Carnegie-Mellon University
  40  *
  41  * This code is derived from software contributed to Berkeley by
  42  * the Systems Programming Group of the University of Utah Computer
  43  * Science Department.
  44  *
  45  * Redistribution and use in source and binary forms, with or without
  46  * modification, are permitted provided that the following conditions
  47  * are met:
  48  * 1. Redistributions of source code must retain the above copyright
  49  *    notice, this list of conditions and the following disclaimer.
  50  * 2. Redistributions in binary form must reproduce the above copyright
  51  *    notice, this list of conditions and the following disclaimer in the
  52  *    documentation and/or other materials provided with the distribution.
  53  * 3. All advertising materials mentioning features or use of this software
  54  *    must display the following acknowledgement:
  55  *      This product includes software developed by the University of
  56  *      California, Berkeley and its contributors.
  57  * 4. Neither the name of the University nor the names of its contributors
  58  *    may be used to endorse or promote products derived from this software
  59  *    without specific prior written permission.
  60  *
  61  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  62  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  63  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  64  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  65  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  66  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  67  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  68  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  69  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  70  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  71  * SUCH DAMAGE.
  72  *
  73  *      @(#)pmap.h      7.6 (Berkeley) 5/10/91
  74  */
  75
  76 #ifndef _MACHINE_PMAP_H_
  77 #define _MACHINE_PMAP_H_
  78
  79 #include <m68k/pmap_motorola.h>
  80
  81 /*
  82  * Description of the memory segments. Build in atari_init/start_c().
  83  * This gives a better separation between machine dependent stuff and
  84  * the pmap-module.
  85  */
  86 #define NMEM_SEGS       8
  87 struct memseg {
  88         paddr_t start;          /* PA of first page in segment  */
  89         paddr_t end;            /* PA of last  page in segment  */
  90         int     first_page;     /* relative page# of 'start'    */
  91         int     free_list;      /* Memory priority, lower = faster */
  92 };
  93
  94 #ifdef  _KERNEL
  95 /*
  96  * Memory segment descriptors.
  97  *  - boot_segs
  98  *      describes the segments obtainted from the bootcode.
  99  *  - usable_segs
 100  *      describes the segments available after system requirements are
 101  *      substracted (reserved pages, etc...).
 102  */
 103 extern struct memseg    boot_segs[NMEM_SEGS];
 104 extern struct memseg    usable_segs[NMEM_SEGS];
 105
 106 void    pmap_bootstrap(vaddr_t);
 107
 108 #endif  /* _KERNEL */
 109
 110 #endif  /* !_MACHINE_PMAP_H_ */