sys/arch/m68k/include/pte_motorola.h

   1 /*      $NetBSD: pte_motorola.h,v 1.6 2009/01/17 01:38:10 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 $Hdr: pte.h 1.13 92/01/20$
  36  *
  37  *      @(#)pte.h       8.1 (Berkeley) 6/10/93
  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 $Hdr: pte.h 1.13 92/01/20$
  75  *
  76  *      @(#)pte.h       8.1 (Berkeley) 6/10/93
  77  */
  78
  79 #ifndef _MACHINE_PTE_H_
  80 #define _MACHINE_PTE_H_
  81
  82 /*
  83  * m68k motorola MMU segment/page table entries
  84  */
  85
  86 typedef u_int   st_entry_t;     /* segment table entry */
  87 typedef u_int   pt_entry_t;     /* page table entry */
  88
  89 #define PT_ENTRY_NULL   NULL
  90 #define ST_ENTRY_NULL   NULL
  91
  92 #define PG_SHIFT        PGSHIFT
  93
  94 #define SG_V            0x00000002      /* segment is valid */
  95 #define SG_NV           0x00000000
  96 #define SG_PROT         0x00000004      /* access protection mask */
  97 #define SG_RO           0x00000004
  98 #define SG_RW           0x00000000
  99 #define SG_U            0x00000008      /* modified bit (68040) */
 100 #define SG_FRAME        ((~0) << PG_SHIFT)
 101 #define SG_ISHIFT       ((PG_SHIFT << 1) - 2)   /* 24 or 22 */
 102 #define SG_IMASK        ((~0) << SG_ISHIFT)
 103 #define SG_PSHIFT       PG_SHIFT
 104 #define SG_PMASK        (((~0) << SG_PSHIFT) & ~SG_IMASK)
 105
 106 /* 68040 additions */
 107 #define SG4_MASK1       0xfe000000
 108 #define SG4_SHIFT1      25
 109 #define SG4_MASK2       0x01fc0000
 110 #define SG4_SHIFT2      18
 111 #define SG4_MASK3       (((~0) << PG_SHIFT) & ~(SG4_MASK1 | SG4_MASK2))
 112 #define SG4_SHIFT3      PG_SHIFT
 113 #define SG4_ADDR1       0xfffffe00
 114 #define SG4_ADDR2       ((~0) << (20 - PG_SHIFT))
 115 #define SG4_LEV1SIZE    128
 116 #define SG4_LEV2SIZE    128
 117 #define SG4_LEV3SIZE    (1 << (SG4_SHIFT2 - PG_SHIFT))  /* 64 or 32 */
 118
 119 #define PG_V            0x00000001
 120 #define PG_NV           0x00000000
 121 #define PG_PROT         0x00000004
 122 #define PG_U            0x00000008
 123 #define PG_M            0x00000010
 124 #define PG_W            0x00000100
 125 #define PG_RO           0x00000004
 126 #define PG_RW           0x00000000
 127 #define PG_FRAME        ((~0) << PG_SHIFT)
 128 #define PG_CI           0x00000040
 129 #define PG_PFNUM(x)     (((x) & PG_FRAME) >> PG_SHIFT)
 130
 131 /* 68040 additions */
 132 #define PG_CMASK        0x00000060      /* cache mode mask */
 133 #define PG_CWT          0x00000000      /* writethrough caching */
 134 #define PG_CCB          0x00000020      /* copyback caching */
 135 #define PG_CIS          0x00000040      /* cache inhibited serialized */
 136 #define PG_CIN          0x00000060      /* cache inhibited nonserialized */
 137 #define PG_SO           0x00000080      /* supervisor only */
 138
 139 #define M68K_STSIZE     (MAXUL2SIZE * SG4_LEV2SIZE * sizeof(st_entry_t))
 140                                         /* user process segment table size */
 141 #define M68K_MAX_PTSIZE (1 << (32 - PG_SHIFT + 2))      /* max size of UPT */
 142 #define M68K_MAX_KPTSIZE        (M68K_MAX_PTSIZE >> 2)  /* max memory to allocate to KPT */
 143 #define M68K_PTBASE     0x10000000      /* UPT map base address */
 144 #define M68K_PTMAXSIZE  0x70000000      /* UPT map maximum size */
 145
 146 /*
 147  * Kernel virtual address to page table entry and to physical address.
 148  */
 149
 150 #ifdef cesfic
 151 #define kvtopte(va) \
 152         (&Sysmap[((unsigned)(va)) >> PGSHIFT])
 153 #else
 154 #define kvtopte(va) \
 155         (&Sysmap[((unsigned)(va) - VM_MIN_KERNEL_ADDRESS) >> PGSHIFT])
 156 #endif
 157
 158 #endif /* !_MACHINE_PTE_H_ */