sys/arch/powerpc/include/ibm4xx/vmparam.h

   1 /*      $NetBSD: vmparam.h,v 1.5 2007/10/25 13:03:05 yamt Exp $ */
   2
   3 /*-
   4  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
   5  * Copyright (C) 1995, 1996 TooLs GmbH.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  * 3. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by TooLs GmbH.
  19  * 4. The name of TooLs GmbH may not be used to endorse or promote products
  20  *    derived from this software without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  25  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  27  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  28  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  29  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  30  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  31  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #ifndef _MACHINE_VMPARAM_H_
  35 #define _MACHINE_VMPARAM_H_
  36
  37 /*
  38  * We use 16K pages on IBM4xx CPUs.  Override the PAGE_* definitions
  39  * to be compile-time constants.
  40  */
  41 #define PAGE_SHIFT      14
  42 #define PAGE_SIZE       (1 << PAGE_SHIFT)
  43 #define PAGE_MASK       (PAGE_SIZE - 1)
  44
  45 #define USRSTACK        VM_MAXUSER_ADDRESS
  46
  47 #ifndef MAXTSIZ
  48 #define MAXTSIZ         (64*1024*1024)          /* max text size */
  49 #endif
  50
  51 #ifndef DFLDSIZ
  52 #define DFLDSIZ         (128*1024*1024)         /* default data size */
  53 #endif
  54
  55 #ifndef MAXDSIZ
  56 #define MAXDSIZ         (1*1024*1024*1024)      /* max data size */
  57 #endif
  58
  59 #ifndef DFLSSIZ
  60 #define DFLSSIZ         (2*1024*1024)           /* default stack size */
  61 #endif
  62
  63 #ifndef MAXSSIZ
  64 #define MAXSSIZ         (32*1024*1024)          /* max stack size */
  65 #endif
  66
  67 /*
  68  * Size of User Raw I/O map
  69  */
  70 #define USRIOSIZE       1024
  71
  72 #if 1
  73 /*
  74  * These definitions give you a 2GB kernel VA space.  The other set matches
  75  * the way other PPC ports lay out their 256MB kernel address space.
  76  */
  77 #define VM_MIN_ADDRESS          ((vaddr_t)0)
  78 #define VM_MAXUSER_ADDRESS      ((vaddr_t)0xffff0000-PAGE_SIZE)
  79 #define VM_MAX_ADDRESS          VM_MAXUSER_ADDRESS
  80 #define VM_MIN_KERNEL_ADDRESS   ((vaddr_t)0x80000000)
  81 #define VM_MAX_KERNEL_ADDRESS   ((vaddr_t)0xff000000)
  82 #else
  83 /*
  84  * Would like to have MAX addresses = 0, but this doesn't (currently) work
  85  */
  86 #define VM_MIN_ADDRESS          ((vaddr_t)0)
  87 #define VM_MAXUSER_ADDRESS      ((vaddr_t)0x80000000-PAGE_SIZE)
  88 #define VM_MAX_ADDRESS          VM_MAXUSER_ADDRESS
  89 #define VM_MIN_KERNEL_ADDRESS   ((vaddr_t)(KERNEL_SR << ADDR_SR_SHFT))
  90 #define VM_MAX_KERNEL_ADDRESS   (VM_MIN_KERNEL_ADDRESS + SEGMENT_LENGTH - 1)
  91 #endif
  92
  93 /* XXX max. amount of KVM to be used by buffers. */
  94 #ifndef VM_MAX_KERNEL_BUF
  95 #define VM_MAX_KERNEL_BUF       (0x10000000 * 7 / 10)
  96
  97 /*
  98  * Override the default pager_map size, there's not enough KVA.
  99  */
 100 #define PAGER_MAP_DEFAULT_SIZE          (4 * 1024 * 1024)
 101 #endif
 102
 103 #define VM_PHYS_SIZE            (USRIOSIZE * PAGE_SIZE)
 104
 105 #define __HAVE_PMAP_PHYSSEG
 106
 107 struct pmap_physseg {
 108         struct pv_entry *pvent;
 109         char *attrs;
 110 };
 111
 112 #define VM_PHYSSEG_MAX          16      /* 1? */
 113 #define VM_PHYSSEG_STRAT        VM_PSTRAT_BSEARCH
 114 #define VM_PHYSSEG_NOADD                /* can't add RAM after vm_mem_init */
 115
 116 #define VM_NFREELIST            1
 117 #define VM_FREELIST_DEFAULT     0
 118
 119 #endif /* _MACHINE_VMPARAM_H_ */