sys/arch/sun3/include/pte3.h

   1 /*      $NetBSD: pte3.h,v 1.17 2008/04/28 20:23:38 martin Exp $ */
   2
   3 /*-
   4  * Copyright (c) 1996 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by Adam Glass and Gordon W. Ross.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #ifndef _MACHINE_PTE3_H
  33 #define _MACHINE_PTE3_H
  34
  35 #define NCONTEXT 8
  36 #define NPMEG   256
  37 #define SEGINV  (NPMEG-1)
  38 #define NPAGSEG 16
  39 #define NSEGMAP 2048
  40
  41 #define PG_VALID   0x80000000
  42 #define PG_WRITE   0x40000000
  43 #define PG_SYSTEM  0x20000000
  44 #define PG_NC      0x10000000
  45 #define PG_TYPE    0x0C000000
  46 #define PG_REF     0x02000000
  47 #define PG_MOD     0x01000000
  48
  49 #define PG_SPECIAL (PG_VALID|PG_WRITE|PG_SYSTEM|PG_NC|PG_REF|PG_MOD)
  50 #define PG_PERM    (PG_VALID|PG_WRITE|PG_SYSTEM|PG_NC)
  51 #define PG_MODREF  (PG_REF|PG_MOD)
  52 #define PG_FRAME   0x0007FFFF
  53
  54 #define PG_MOD_SHIFT 24
  55 #define PG_PERM_SHIFT 28
  56
  57 #define OBMEM   0
  58 #define OBIO    1
  59 #define VME_D16 2
  60 #define VME_D32 3
  61 #define PG_TYPE_SHIFT 26
  62
  63 #define PG_INVAL   0x0
  64
  65 #define MAKE_PGTYPE(x) ((x) << PG_TYPE_SHIFT)
  66 #define PG_PFNUM(pte) (pte & PG_FRAME)
  67 #define PG_PA(pte) (PG_PFNUM(pte) << PGSHIFT)
  68
  69 #define PGT_MASK        MAKE_PGTYPE(3)
  70 #define PGT_OBMEM       MAKE_PGTYPE(OBMEM)              /* onboard memory */
  71 #define PGT_OBIO        MAKE_PGTYPE(OBIO)               /* onboard I/O */
  72 #define PGT_VME_D16     MAKE_PGTYPE(VME_D16)    /* VMEbus 16-bit data */
  73 #define PGT_VME_D32     MAKE_PGTYPE(VME_D32)    /* VMEbus 32-bit data */
  74
  75 #define VA_SEGNUM(x)    ((u_int)(x) >> SEGSHIFT)
  76
  77 #define VA_PTE_NUM_SHIFT  13
  78 #define VA_PTE_NUM_MASK (0xF << VA_PTE_NUM_SHIFT)
  79 #define VA_PTE_NUM(va) (((va) & VA_PTE_NUM_MASK) >> VA_PTE_NUM_SHIFT)
  80
  81 #define PA_PGNUM(pa) ((unsigned)(pa) >> PGSHIFT)
  82
  83 #endif /* _MACHINE_PTE3_H */