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  1. /*
  2.  * Copyright (c) 2005 Pavel Rimsky
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup sparc64
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef KERN_sparc64_CPU_NODE_H_
  36. #define KERN_sparc64_CPU_NODE_H_
  37.  
  38. #include <genarch/ofw/ofw_tree.h>
  39.  
  40. /*
  41.  * Name of the CPU OFW node property, which holds the MID (processor ID).
  42.  * US uses UPA, US3 uses Fireplane, hence the properties names are different.
  43.  */
  44. #if defined (US)
  45. #define PORTID_NAME "upa-portid"
  46. #elif defined (US3)
  47. #define PORTID_NAME "portid"
  48. #endif
  49.  
  50. /** Finds the parent node of all the CPU nodes.
  51.  *
  52.  *  Depending on the OFW version, CPUS can be at "/" or at "/ssm@0,0".
  53.  */
  54. static inline ofw_tree_node_t *cpus_parent(void)
  55. {
  56.     ofw_tree_node_t *parent;
  57.     parent = ofw_tree_find_child(ofw_tree_lookup("/"), "ssm@0,0");
  58.     if (parent == NULL)
  59.         parent = ofw_tree_lookup("/");
  60.     return parent;
  61. }
  62.  
  63. #endif
  64.  
  65. /** @}
  66.  */