/*
   * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
   *
   * PowerPC64 port:
   * Copyright (C) 2002 Anton Blanchard, IBM Corp.
   */
  #ifndef _ASM_MMZONE_H_
  #define _ASM_MMZONE_H_

  #ifdef __KERNEL__

  /*
   * generic non-linear memory support:

   *
   * 1) we will not split memory into more chunks than will fit into the
   *    flags field of the struct page
   */

  #ifdef CONFIG_NEED_MULTIPLE_NODES

  
  extern struct pglist_data *node_data[];

  /*
   * Return a pointer to the node data for node n.
   */
  #define NODE_DATA(nid)		(node_data[nid])

  
  /*
   * Following are specific to this numa platform.
   */
  
  extern int numa_cpu_lookup_table[];

  extern cpumask_t numa_cpumask_lookup_table[];

  #ifdef CONFIG_MEMORY_HOTPLUG
  extern unsigned long max_pfn;
  #endif

  /*
   * Following are macros that each numa implmentation must define.
   */

  #define node_start_pfn(nid)	(NODE_DATA(nid)->node_start_pfn)
  #define node_end_pfn(nid)	(NODE_DATA(nid)->node_end_pfn)

  #endif /* CONFIG_NEED_MULTIPLE_NODES */

  #endif /* __KERNEL__ */

  #endif /* _ASM_MMZONE_H_ */