1/*
 2 * Copyright (C) 2002, Erich Focht, NEC
 3 *
 4 * All rights reserved.
 5 *
 6 * This program is free software; you can redistribute it and/or modify
 7 * it under the terms of the GNU General Public License as published by
 8 * the Free Software Foundation; either version 2 of the License, or
 9 * (at your option) any later version.
10 */
11#ifndef _ASM_IA64_TOPOLOGY_H
12#define _ASM_IA64_TOPOLOGY_H
13
14#include <asm/acpi.h>
15#include <asm/numa.h>
16#include <asm/smp.h>
17
18#ifdef CONFIG_NUMA
19
20/* Nodes w/o CPUs are preferred for memory allocations, see build_zonelists */
21#define PENALTY_FOR_NODE_WITH_CPUS 255
22
23/*
24 * Distance above which we begin to use zone reclaim
25 */
26#define RECLAIM_DISTANCE 15
27
28/*
29 * Returns a bitmask of CPUs on Node 'node'.
30 */
31#define cpumask_of_node(node) ((node) == -1 ?				\
32			       cpu_all_mask :				\
33			       &node_to_cpu_mask[node])
34
35/*
36 * Returns the number of the node containing Node 'nid'.
37 * Not implemented here. Multi-level hierarchies detected with
38 * the help of node_distance().
39 */
40#define parent_node(nid) (nid)
41
42/*
43 * Determines the node for a given pci bus
44 */
45#define pcibus_to_node(bus) PCI_CONTROLLER(bus)->node
46
47void build_cpu_to_node_map(void);
48
49#define SD_CPU_INIT (struct sched_domain) {		\
50	.parent			= NULL,			\
51	.child			= NULL,			\
52	.groups			= NULL,			\
53	.min_interval		= 1,			\
54	.max_interval		= 4,			\
55	.busy_factor		= 64,			\
56	.imbalance_pct		= 125,			\
57	.cache_nice_tries	= 2,			\
58	.busy_idx		= 2,			\
59	.idle_idx		= 1,			\
60	.newidle_idx		= 0,			\
61	.wake_idx		= 0,			\
62	.forkexec_idx		= 0,			\
63	.flags			= SD_LOAD_BALANCE	\
64				| SD_BALANCE_NEWIDLE	\
65				| SD_BALANCE_EXEC	\
66				| SD_BALANCE_FORK	\
67				| SD_WAKE_AFFINE,	\
68	.last_balance		= jiffies,		\
69	.balance_interval	= 1,			\
70	.nr_balance_failed	= 0,			\
71}
72
73#endif /* CONFIG_NUMA */
74
75#ifdef CONFIG_SMP
76#define topology_physical_package_id(cpu)	(cpu_data(cpu)->socket_id)
77#define topology_core_id(cpu)			(cpu_data(cpu)->core_id)
78#define topology_core_cpumask(cpu)		(&cpu_core_map[cpu])
79#define topology_thread_cpumask(cpu)		(&per_cpu(cpu_sibling_map, cpu))
80#endif
81
82extern void arch_fix_phys_package_id(int num, u32 slot);
83
84#define cpumask_of_pcibus(bus)	(pcibus_to_node(bus) == -1 ?		\
85				 cpu_all_mask :				\
86				 cpumask_of_node(pcibus_to_node(bus)))
87
88#include <asm-generic/topology.h>
89
90#endif /* _ASM_IA64_TOPOLOGY_H */