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Thomas Gleixner3367e562008-01-30 13:30:38 +01001/*
2 * Written by: Matthew Dobson, IBM Corporation
3 *
4 * Copyright (C) 2002, IBM Corp.
5 *
6 * All rights reserved.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
16 * NON INFRINGEMENT. See the GNU General Public License for more
17 * details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 *
23 * Send feedback to <colpatch@us.ibm.com>
24 */
H. Peter Anvin1965aae2008-10-22 22:26:29 -070025#ifndef _ASM_X86_TOPOLOGY_H
26#define _ASM_X86_TOPOLOGY_H
Thomas Gleixner3367e562008-01-30 13:30:38 +010027
Vaidyanathan Srinivasan5c3a1212008-05-05 19:22:15 +053028#ifdef CONFIG_X86_32
29# ifdef CONFIG_X86_HT
30# define ENABLE_TOPO_DEFINES
31# endif
32#else
33# ifdef CONFIG_SMP
34# define ENABLE_TOPO_DEFINES
35# endif
36#endif
37
Lee Schermerhorn4e25b252009-12-14 17:58:23 -080038/*
39 * to preserve the visibility of NUMA_NO_NODE definition,
40 * moved to there from here. May be used independent of
41 * CONFIG_NUMA.
42 */
43#include <linux/numa.h>
Mike Travis23ca4bb2008-05-12 21:21:12 +020044
Thomas Gleixner3367e562008-01-30 13:30:38 +010045#ifdef CONFIG_NUMA
46#include <linux/cpumask.h>
Lee Schermerhorn4e25b252009-12-14 17:58:23 -080047
Thomas Gleixner3367e562008-01-30 13:30:38 +010048#include <asm/mpspec.h>
49
Mike Travis23ca4bb2008-05-12 21:21:12 +020050/* Mappings between logical cpu number and node number */
51DECLARE_EARLY_PER_CPU(int, x86_cpu_to_node_map);
Thomas Gleixner3367e562008-01-30 13:30:38 +010052
Mike Travis23ca4bb2008-05-12 21:21:12 +020053#ifdef CONFIG_DEBUG_PER_CPU_MAPS
Lee Schermerhorne534c7c2010-05-26 14:44:58 -070054/*
55 * override generic percpu implementation of cpu_to_node
56 */
57extern int __cpu_to_node(int cpu);
58#define cpu_to_node __cpu_to_node
59
Mike Travis23ca4bb2008-05-12 21:21:12 +020060extern int early_cpu_to_node(int cpu);
Mike Travis23ca4bb2008-05-12 21:21:12 +020061
62#else /* !CONFIG_DEBUG_PER_CPU_MAPS */
63
Mike Travis23ca4bb2008-05-12 21:21:12 +020064/* Same function but used if called before per_cpu areas are setup */
65static inline int early_cpu_to_node(int cpu)
66{
Tejun Heof10fcd42009-01-13 20:41:34 +090067 return early_per_cpu(x86_cpu_to_node_map, cpu);
Mike Travis23ca4bb2008-05-12 21:21:12 +020068}
Mike Travisaa6b5442008-03-31 08:41:55 -070069
Rusty Russell71ee73e2009-03-13 14:49:52 +103070#endif /* !CONFIG_DEBUG_PER_CPU_MAPS */
Thomas Gleixner3367e562008-01-30 13:30:38 +010071
Rusty Russell71ee73e2009-03-13 14:49:52 +103072/* Mappings between node number and cpus on that node. */
Rusty Russellc032ef602009-03-13 14:49:53 +103073extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES];
Rusty Russell71ee73e2009-03-13 14:49:52 +103074
75#ifdef CONFIG_DEBUG_PER_CPU_MAPS
Rusty Russell73e907d2009-03-13 14:49:57 +103076extern const struct cpumask *cpumask_of_node(int node);
Rusty Russell71ee73e2009-03-13 14:49:52 +103077#else
Thomas Gleixner3367e562008-01-30 13:30:38 +010078/* Returns a pointer to the cpumask of CPUs on Node 'node'. */
Rusty Russellc032ef602009-03-13 14:49:53 +103079static inline const struct cpumask *cpumask_of_node(int node)
Thomas Gleixner3367e562008-01-30 13:30:38 +010080{
81 return node_to_cpumask_map[node];
82}
Rusty Russell71ee73e2009-03-13 14:49:52 +103083#endif
Mike Travis23ca4bb2008-05-12 21:21:12 +020084
Brian Gerst6470aff2009-01-27 12:56:47 +090085extern void setup_node_to_cpumask_map(void);
86
Rusty Russell393d68f2008-12-26 22:23:38 +103087/*
Mike Travis23ca4bb2008-05-12 21:21:12 +020088 * Returns the number of the node containing Node 'node'. This
89 * architecture is flat, so it is a pretty simple function!
90 */
91#define parent_node(node) (node)
92
Thomas Gleixner3367e562008-01-30 13:30:38 +010093#define pcibus_to_node(bus) __pcibus_to_node(bus)
Thomas Gleixner3367e562008-01-30 13:30:38 +010094
Thomas Gleixner96a388d2007-10-11 11:20:03 +020095#ifdef CONFIG_X86_32
Thomas Gleixner3367e562008-01-30 13:30:38 +010096# define SD_CACHE_NICE_TRIES 1
97# define SD_IDLE_IDX 1
Thomas Gleixner96a388d2007-10-11 11:20:03 +020098#else
Thomas Gleixner3367e562008-01-30 13:30:38 +010099# define SD_CACHE_NICE_TRIES 2
100# define SD_IDLE_IDX 2
Thomas Gleixner3367e562008-01-30 13:30:38 +0100101#endif
102
Ingo Molnar9fcd18c2008-11-05 16:52:08 +0100103/* sched_domains SD_NODE_INIT for NUMA machines */
Ingo Molnar47734f82009-09-04 11:21:24 +0200104#define SD_NODE_INIT (struct sched_domain) { \
105 .min_interval = 8, \
106 .max_interval = 32, \
107 .busy_factor = 32, \
108 .imbalance_pct = 125, \
109 .cache_nice_tries = SD_CACHE_NICE_TRIES, \
110 .busy_idx = 3, \
111 .idle_idx = SD_IDLE_IDX, \
Mike Galbraith0ec9fab2009-09-15 15:07:03 +0200112 .newidle_idx = 0, \
Peter Zijlstra78e7ed52009-09-03 13:16:51 +0200113 .wake_idx = 0, \
Peter Zijlstrab8a543e2009-09-15 15:22:03 +0200114 .forkexec_idx = 0, \
Ingo Molnar47734f82009-09-04 11:21:24 +0200115 \
116 .flags = 1*SD_LOAD_BALANCE \
Ingo Molnar840a0652009-09-04 11:32:54 +0200117 | 1*SD_BALANCE_NEWIDLE \
Ingo Molnar47734f82009-09-04 11:21:24 +0200118 | 1*SD_BALANCE_EXEC \
119 | 1*SD_BALANCE_FORK \
Peter Zijlstra182a85f2009-09-16 13:24:49 +0200120 | 0*SD_BALANCE_WAKE \
Ingo Molnar47734f82009-09-04 11:21:24 +0200121 | 1*SD_WAKE_AFFINE \
Mike Galbraith6b9de612009-11-02 20:36:51 +0100122 | 0*SD_PREFER_LOCAL \
Ingo Molnar47734f82009-09-04 11:21:24 +0200123 | 0*SD_SHARE_CPUPOWER \
124 | 0*SD_POWERSAVINGS_BALANCE \
125 | 0*SD_SHARE_PKG_RESOURCES \
126 | 1*SD_SERIALIZE \
Ingo Molnar47734f82009-09-04 11:21:24 +0200127 | 0*SD_PREFER_SIBLING \
128 , \
129 .last_balance = jiffies, \
130 .balance_interval = 1, \
Thomas Gleixner3367e562008-01-30 13:30:38 +0100131}
132
Tejun Heoac7136b62011-02-16 17:11:09 +0100133#ifdef CONFIG_X86_64
Thomas Gleixner3367e562008-01-30 13:30:38 +0100134extern int __node_distance(int, int);
135#define node_distance(a, b) __node_distance(a, b)
136#endif
137
Mike Travis23ca4bb2008-05-12 21:21:12 +0200138#else /* !CONFIG_NUMA */
Thomas Gleixner3367e562008-01-30 13:30:38 +0100139
Mike Travisf2a08272009-01-15 09:19:32 -0800140static inline int numa_node_id(void)
141{
142 return 0;
143}
Lee Schermerhorn72812012010-05-26 14:44:56 -0700144/*
145 * indicate override:
146 */
147#define numa_node_id numa_node_id
Mike Travisf2a08272009-01-15 09:19:32 -0800148
Mike Travisf2a08272009-01-15 09:19:32 -0800149static inline int early_cpu_to_node(int cpu)
150{
151 return 0;
152}
Mike Travis23ca4bb2008-05-12 21:21:12 +0200153
Brian Gerst6470aff2009-01-27 12:56:47 +0900154static inline void setup_node_to_cpumask_map(void) { }
155
Thomas Gleixner3367e562008-01-30 13:30:38 +0100156#endif
157
Mike Travisaa6b5442008-03-31 08:41:55 -0700158#include <asm-generic/topology.h>
159
Rusty Russell030bb202008-12-26 22:23:41 +1030160extern const struct cpumask *cpu_coregroup_mask(int cpu);
Thomas Gleixner3367e562008-01-30 13:30:38 +0100161
162#ifdef ENABLE_TOPO_DEFINES
163#define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id)
164#define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id)
Rusty Russell7ad728f2009-03-13 14:49:50 +1030165#define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu))
166#define topology_thread_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu))
Mike Travis23ca4bb2008-05-12 21:21:12 +0200167
168/* indicates that pointers to the topology cpumask_t maps are valid */
169#define arch_provides_topology_pointers yes
Thomas Gleixner3367e562008-01-30 13:30:38 +0100170#endif
171
Alex Chiangfe086a72008-04-29 15:05:29 -0700172static inline void arch_fix_phys_package_id(int num, u32 slot)
173{
174}
175
Yinghai Lu30a18d62008-02-19 03:21:20 -0800176struct pci_bus;
Yinghai Lu0e94ecd2009-04-18 10:11:25 -0700177void x86_pci_root_bus_res_quirks(struct pci_bus *b);
Yinghai Lu30a18d62008-02-19 03:21:20 -0800178
Thomas Gleixner3367e562008-01-30 13:30:38 +0100179#ifdef CONFIG_SMP
Vaidyanathan Srinivasan2ff799d2009-05-11 20:09:14 +0530180#define mc_capable() ((boot_cpu_data.x86_max_cores > 1) && \
181 (cpumask_weight(cpu_core_mask(0)) != nr_cpu_ids))
Thomas Gleixner3367e562008-01-30 13:30:38 +0100182#define smt_capable() (smp_num_siblings > 1)
183#endif
184
Yinghai Lu871d5f82008-02-19 03:20:09 -0800185#ifdef CONFIG_NUMA
186extern int get_mp_bus_to_node(int busnum);
187extern void set_mp_bus_to_node(int busnum, int node);
188#else
189static inline int get_mp_bus_to_node(int busnum)
190{
191 return 0;
192}
193static inline void set_mp_bus_to_node(int busnum, int node)
194{
195}
196#endif
197
H. Peter Anvin1965aae2008-10-22 22:26:29 -0700198#endif /* _ASM_X86_TOPOLOGY_H */