target/linux/ubicom32/files/arch/ubicom32/include/asm/devtree.h

   1 /*
   2  * arch/ubicom32/include/asm/devtree.h
   3  *   Device Tree Header File (Shared between ultra and the Host OS)
   4  *
   5  * (C) Copyright 2009, Ubicom, Inc.
   6  *
   7  * This file is part of the Ubicom32 Linux Kernel Port.
   8  *
   9  * The Ubicom32 Linux Kernel Port is free software: you can redistribute
  10  * it and/or modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation, either version 2 of the
  12  * License, or (at your option) any later version.
  13  *
  14  * The Ubicom32 Linux Kernel Port is distributed in the hope that it
  15  * will be useful, but WITHOUT ANY WARRANTY; without even the implied
  16  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  17  * the GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with the Ubicom32 Linux Kernel Port.  If not,
  21  * see <http://www.gnu.org/licenses/>.
  22  *
  23  * Ubicom32 implementation derived from (with many thanks):
  24  *   arch/m68knommu
  25  *   arch/blackfin
  26  *   arch/parisc
  27  */
  28
  29 #ifndef _ASM_UBICOM32_DEVTREE_H
  30 #define _ASM_UBICOM32_DEVTREE_H
  31
  32 #define DEVTREE_MAX_NAME 32
  33 #define DEVTREE_IRQ_NONE 0xff
  34 #define DEVTREE_IRQ_DONTCARE 0xff
  35 #define DEVTREE_NODE_MAGIC 0x10203040
  36
  37 struct devtree_node {
  38         struct devtree_node *next;
  39         unsigned char sendirq;
  40         unsigned char recvirq;
  41         char name[DEVTREE_MAX_NAME];
  42         unsigned int magic;
  43 };
  44
  45 extern struct devtree_node *devtree;
  46 extern struct devtree_node *devtree_find_by_irq(uint8_t sendirq, uint8_t recvirq);
  47 extern struct devtree_node *devtree_find_node(const char *str);
  48 extern struct devtree_node *devtree_find_next(struct devtree_node **cur);
  49 extern int devtree_irq(struct devtree_node *dn, unsigned char *sendirq, unsigned char *recvirq);
  50 extern void devtree_print(void);
  51
  52 #endif /* _ASM_UBICOM32_DEVTREE_H */