release/src-rt-6.x.4708/linux/linux-2.6.36/arch/powerpc/sysdev/dart.h

   1 /*
   2  * Copyright (C) 2004 Olof Johansson <olof@lixom.net>, 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 _POWERPC_SYSDEV_DART_H
  20 #define _POWERPC_SYSDEV_DART_H
  21
  22
  23 /* Offset from base to control register */
  24 #define DART_CNTL       0
  25
  26 /* Offset from base to exception register */
  27 #define DART_EXCP_U3    0x10
  28 /* Offset from base to TLB tag registers */
  29 #define DART_TAGS_U3    0x1000
  30
  31 /* U4 registers */
  32 #define DART_BASE_U4    0x10
  33 #define DART_SIZE_U4    0x20
  34 #define DART_EXCP_U4    0x30
  35 #define DART_TAGS_U4    0x1000
  36
  37 /* Control Register fields */
  38
  39 /* U3 registers */
  40 #define DART_CNTL_U3_BASE_MASK  0xfffff
  41 #define DART_CNTL_U3_BASE_SHIFT 12
  42 #define DART_CNTL_U3_FLUSHTLB   0x400
  43 #define DART_CNTL_U3_ENABLE     0x200
  44 #define DART_CNTL_U3_SIZE_MASK  0x1ff
  45 #define DART_CNTL_U3_SIZE_SHIFT 0
  46
  47 /* U4 registers */
  48 #define DART_BASE_U4_BASE_MASK  0xffffff
  49 #define DART_BASE_U4_BASE_SHIFT 0
  50 #define DART_CNTL_U4_ENABLE     0x80000000
  51 #define DART_CNTL_U4_IONE       0x40000000
  52 #define DART_CNTL_U4_FLUSHTLB   0x20000000
  53 #define DART_CNTL_U4_IDLE       0x10000000
  54 #define DART_CNTL_U4_PAR_EN     0x08000000
  55 #define DART_CNTL_U4_IONE_MASK  0x07ffffff
  56 #define DART_SIZE_U4_SIZE_MASK  0x1fff
  57 #define DART_SIZE_U4_SIZE_SHIFT 0
  58
  59 #define DART_REG(r)     (dart + ((r) >> 2))
  60 #define DART_IN(r)      (in_be32(DART_REG(r)))
  61 #define DART_OUT(r,v)   (out_be32(DART_REG(r), (v)))
  62
  63
  64 /* size of table in pages */
  65
  66
  67 /* DART table fields */
  68
  69 #define DARTMAP_VALID   0x80000000
  70 #define DARTMAP_RPNMASK 0x00ffffff
  71
  72
  73 #define DART_PAGE_SHIFT         12
  74 #define DART_PAGE_SIZE          (1 << DART_PAGE_SHIFT)
  75
  76
  77 #endif /* _POWERPC_SYSDEV_DART_H */