release/src-rt-6.x/linux/linux-2.6/include/asm-powerpc/dcr.h

   1 /*
   2  * (c) Copyright 2006 Benjamin Herrenschmidt, IBM Corp.
   3  *                    <benh@kernel.crashing.org>
   4  *
   5  *   This program is free software;  you can redistribute it and/or modify
   6  *   it under the terms of the GNU General Public License as published by
   7  *   the Free Software Foundation; either version 2 of the License, or
   8  *   (at your option) any later version.
   9  *
  10  *   This program is distributed in the hope that it will be useful,
  11  *   but WITHOUT ANY WARRANTY;  without even the implied warranty of
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  13  *   the GNU General Public License for more details.
  14  *
  15  *   You should have received a copy of the GNU General Public License
  16  *   along with this program;  if not, write to the Free Software
  17  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  18  */
  19
  20 #ifndef _ASM_POWERPC_DCR_H
  21 #define _ASM_POWERPC_DCR_H
  22 #ifdef __KERNEL__
  23 #ifdef CONFIG_PPC_DCR
  24
  25 #ifdef CONFIG_PPC_DCR_NATIVE
  26 #include <asm/dcr-native.h>
  27 #else
  28 #include <asm/dcr-mmio.h>
  29 #endif
  30
  31 /*
  32  * On CONFIG_PPC_MERGE, we have additional helpers to read the DCR
  33  * base from the device-tree
  34  */
  35 #ifdef CONFIG_PPC_MERGE
  36 struct device_node;
  37 extern unsigned int dcr_resource_start(struct device_node *np,
  38                                        unsigned int index);
  39 extern unsigned int dcr_resource_len(struct device_node *np,
  40                                      unsigned int index);
  41 #endif /* CONFIG_PPC_MERGE */
  42
  43 #endif /* CONFIG_PPC_DCR */
  44 #endif /* __KERNEL__ */
  45 #endif /* _ASM_POWERPC_DCR_H */