sys/arch/sh3/include/mmu_sh3.h

   1 /*      $NetBSD: mmu_sh3.h,v 1.6 2006/03/04 01:55:03 uwe Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * This code is derived from software contributed to The NetBSD Foundation
   8  * by UCHIYAMA Yasushi.
   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 _SH3_MMU_SH3_H_
  33 #define _SH3_MMU_SH3_H_
  34 #include <sh3/devreg.h>
  35
  36 /* 128-entry 4-way set-associative */
  37 #define SH3_MMU_WAY                     4
  38 #define SH3_MMU_ENTRY                   32
  39
  40 #define SH3_PTEH                        0xfffffff0
  41 #define   SH3_PTEH_ASID_MASK              0x000000ff
  42 #define   SH3_PTEH_VPN_MASK               0xfffffc00
  43 #define SH3_PTEL                        0xfffffff4
  44 #define   SH3_PTEL_HWBITS                 0x1ffff17e /* [28:12][8][6:1] */
  45 #define SH3_TTB                         0xfffffff8
  46 #define SH3_TEA                         0xfffffffc
  47 #define SH3_MMUCR                       0xffffffe0
  48 #define   SH3_MMUCR_AT                    0x00000001
  49 #define   SH3_MMUCR_IX                    0x00000002
  50 #define   SH3_MMUCR_TF                    0x00000004
  51 #define   SH3_MMUCR_RC                    0x00000030
  52 #define   SH3_MMUCR_SV                    0x00000100
  53
  54 /*
  55  * memory-mapped TLB
  56  */
  57 /* Address array */
  58 #define SH3_MMUAA                       0xf2000000
  59 /* address specification */
  60 #define   SH3_MMU_VPN_SHIFT               12
  61 #define   SH3_MMU_VPN_MASK                0x0001f000    /* [16:12] */
  62 #define   SH3_MMU_WAY_SHIFT               8
  63 #define   SH3_MMU_WAY_MASK                0x00000300    /* [9:8] */
  64 /* data specification */
  65 #define   SH3_MMU_D_VALID                 0x00000100
  66 #define   SH3_MMUAA_D_VPN_MASK_1K         0xfffe0c00    /* [31:17][11:10] */
  67 #define   SH3_MMUAA_D_VPN_MASK_4K         0xfffe0000    /* [31:17] */
  68 #define   SH3_MMUAA_D_ASID_MASK           0x000000ff
  69
  70 /* Data array */
  71 #define SH3_MMUDA                       0xf3000000
  72 #define   SH3_MMUDA_D_PPN_MASK            0xfffffc00
  73 #define   SH3_MMUDA_D_V                   0x00000100
  74 #define   SH3_MMUDA_D_PR_SHIFT            5
  75 #define   SH3_MMUDA_D_PR_MASK             0x00000060    /* [6:5] */
  76 #define   SH3_MMUDA_D_SZ                  0x00000010
  77 #define   SH3_MMUDA_D_C                   0x00000008
  78 #define   SH3_MMUDA_D_D                   0x00000004
  79 #define   SH3_MMUDA_D_SH                  0x00000002
  80
  81 #define SH3_TLB_DISABLE *(volatile uint32_t *)SH3_MMUCR = SH3_MMUCR_TF
  82 #endif /* !_SH3_MMU_SH3_H_ */