1/*
2 * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
3 *
4 * PowerPC64 port:
5 * Copyright (C) 2002 Anton Blanchard, IBM Corp.
6 */
7#ifndef _ASM_MMZONE_H_
8#define _ASM_MMZONE_H_
9#ifdef __KERNEL__
10
11
12/*
13 * generic non-linear memory support:
14 *
15 * 1) we will not split memory into more chunks than will fit into the
16 *    flags field of the struct page
17 */
18
19#ifdef CONFIG_NEED_MULTIPLE_NODES
20
21extern struct pglist_data *node_data[];
22/*
23 * Return a pointer to the node data for node n.
24 */
25#define NODE_DATA(nid)		(node_data[nid])
26
27/*
28 * Following are specific to this numa platform.
29 */
30
31extern int numa_cpu_lookup_table[];
32extern cpumask_t numa_cpumask_lookup_table[];
33#ifdef CONFIG_MEMORY_HOTPLUG
34extern unsigned long max_pfn;
35#endif
36
37/*
38 * Following are macros that each numa implmentation must define.
39 */
40
41#define node_start_pfn(nid)	(NODE_DATA(nid)->node_start_pfn)
42#define node_end_pfn(nid)	(NODE_DATA(nid)->node_end_pfn)
43
44#endif /* CONFIG_NEED_MULTIPLE_NODES */
45
46#endif /* __KERNEL__ */
47#endif /* _ASM_MMZONE_H_ */
48