sys/arch/evbarm/include/vmparam.h

   1 /*      $NetBSD: vmparam.h,v 1.28 2012/02/18 16:29:37 christos Exp $    */
   2
   3 /*
   4  * Copyright (c) 1988 The Regents of the University of California.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #ifndef _EVBARM_VMPARAM_H_
  33 #define _EVBARM_VMPARAM_H_
  34
  35 #if defined(__minix)
  36 #include <arm/arm32/vmparam.h>
  37 #endif /* defined(__minix) */
  38
  39 #if defined(_KERNEL) || defined(_KMEMUSER)
  40
  41 #include <arm/arm32/vmparam.h>
  42
  43 /*
  44  * Address space constants
  45  */
  46
  47 /*
  48  * The line between user space and kernel space
  49  * Mappings >= KERNEL_BASE are constant across all processes
  50  */
  51 #ifdef KERNEL_BASE_EXT
  52 #define KERNEL_BASE             KERNEL_BASE_EXT
  53 #else
  54 #define KERNEL_BASE             0x80000000
  55 #endif
  56
  57 /*
  58  * Override the default pager_map size, there's not enough KVA.
  59  */
  60 #define PAGER_MAP_DEFAULT_SIZE          (4 * 1024 * 1024)
  61
  62 /*
  63  * Size of User Raw I/O map
  64  */
  65
  66 #define USRIOSIZE       300
  67
  68 /* virtual sizes (bytes) for various kernel submaps */
  69
  70 #define VM_PHYS_SIZE            (USRIOSIZE*PAGE_SIZE)
  71
  72 /*
  73  * max number of non-contig chunks of physical RAM you can have
  74  */
  75
  76 #define VM_PHYSSEG_MAX          32
  77
  78 /*
  79  * when converting a physical address to a vm_page structure, we
  80  * want to use a binary search on the chunks of physical memory
  81  * to find our RAM
  82  */
  83
  84 #define VM_PHYSSEG_STRAT        VM_PSTRAT_BSEARCH
  85
  86 /*
  87  * we support 2 free lists:
  88  *
  89  *      - DEFAULT for all systems
  90  *      - ISADMA for the ISA DMA range on Sharks only
  91  */
  92
  93 #define VM_NFREELIST            2
  94 #define VM_FREELIST_DEFAULT     0
  95 #define VM_FREELIST_ISADMA      1
  96
  97 #endif /* _KERNEL || _KMEMUSER */
  98
  99 #endif  /* _EVBARM_VMPARAM_H_ */