include/asm-ppc64/dart.h

   1 /*
   2  * Copyright (C) 2004 Olof Johansson <olof@austin.ibm.com>, IBM Corporation
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  17  */
  18
  19 #ifndef _ASM_DART_H
  20 #define _ASM_DART_H
  21
  22
  23 /* physical base of DART registers */
  24 #define DART_BASE        0xf8033000UL
  25
  26 /* Offset from base to control register */
  27 #define DARTCNTL   0
  28 /* Offset from base to exception register */
  29 #define DARTEXCP   0x10
  30 /* Offset from base to TLB tag registers */
  31 #define DARTTAG    0x1000
  32
  33
  34 /* Control Register fields */
  35
  36 /* base address of table (pfn) */
  37 #define DARTCNTL_BASE_MASK    0xfffff
  38 #define DARTCNTL_BASE_SHIFT   12
  39
  40 #define DARTCNTL_FLUSHTLB     0x400
  41 #define DARTCNTL_ENABLE       0x200
  42
  43 /* size of table in pages */
  44 #define DARTCNTL_SIZE_MASK    0x1ff
  45 #define DARTCNTL_SIZE_SHIFT   0
  46
  47
  48 /* DART table fields */
  49
  50 #define DARTMAP_VALID   0x80000000
  51 #define DARTMAP_RPNMASK 0x00ffffff
  52
  53
  54 #define DART_SHIFT              12
  55 #define DART_PAGE_SIZE          (1 << DART_SHIFT)
  56 #define DART_PAGE_FACTOR        (PAGE_SHIFT - DART_SHIFT)
  57
  58
  59 #endif