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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (c) 2000 Silicon Graphics, Inc. All rights reserved.
* Copyright (c) 2002 NEC Corp.
* Copyright (c) 2002 Erich Focht <efocht@ess.nec.de>
* Copyright (c) 2002 Kimio Suganuma <k-suganuma@da.jp.nec.com>
*/
#ifndef _ASM_IA64_NODEDATA_H
#define _ASM_IA64_NODEDATA_H
#include <asm/mmzone.h>
/*
* Node Data. One of these structures is located on each node of a NUMA system.
*/
struct pglist_data;
struct ia64_node_data {
short node;
struct pglist_data *pg_data_ptrs[NR_NODES];
struct page *bank_mem_map_base[NR_BANKS];
struct ia64_node_data *node_data_ptrs[NR_NODES];
short node_id_map[NR_BANKS];
};
/*
* Return a pointer to the node_data structure for the executing cpu.
*/
#define local_node_data (local_cpu_data->node_data)
/*
* Return a pointer to the node_data structure for the specified node.
*/
#define node_data(node) (local_node_data->node_data_ptrs[node])
/*
* Get a pointer to the node_id/node_data for the current cpu.
* (boot time only)
*/
extern int boot_get_local_nodeid(void);
extern struct ia64_node_data *get_node_data_ptr(void);
/*
* Given a node id, return a pointer to the pg_data_t for the node.
* The following 2 macros are similar.
*
* NODE_DATA - should be used in all code not related to system
* initialization. It uses pernode data structures to minimize
* offnode memory references. However, these structure are not
* present during boot. This macro can be used once cpu_init
* completes.
*
* BOOT_NODE_DATA
* - should be used during system initialization
* prior to freeing __initdata. It does not depend on the percpu
* area being present.
*
* NOTE: The names of these macros are misleading but are difficult to change
* since they are used in generic linux & on other architecures.
*/
#define NODE_DATA(nid) (local_node_data->pg_data_ptrs[nid])
#define BOOT_NODE_DATA(nid) boot_get_pg_data_ptr((long)(nid))
struct pglist_data;
extern struct pglist_data * __init boot_get_pg_data_ptr(long);
#endif /* _ASM_IA64_NODEDATA_H */
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