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3367e56f TG |
1 | /* |
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 | */ | |
25 | #ifndef _ASM_X86_TOPOLOGY_H | |
26 | #define _ASM_X86_TOPOLOGY_H | |
27 | ||
5c3a121d VS |
28 | #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 | ||
3367e56f TG |
38 | #ifdef CONFIG_NUMA |
39 | #include <linux/cpumask.h> | |
40 | #include <asm/mpspec.h> | |
41 | ||
42 | /* Mappings between logical cpu number and node number */ | |
834beda1 | 43 | #ifdef CONFIG_X86_32 |
43238382 | 44 | extern int cpu_to_node_map[]; |
834beda1 | 45 | #else |
625d6cff MT |
46 | /* Returns the number of the current Node. */ |
47 | #define numa_node_id() (early_cpu_to_node(raw_smp_processor_id())) | |
834beda1 | 48 | #endif |
49 | ||
04d1dd20 | 50 | DECLARE_PER_CPU(int, x86_cpu_to_node_map); |
b447a468 MT |
51 | |
52 | #ifdef CONFIG_SMP | |
04d1dd20 GOC |
53 | extern int x86_cpu_to_node_map_init[]; |
54 | extern void *x86_cpu_to_node_map_early_ptr; | |
b447a468 MT |
55 | #else |
56 | #define x86_cpu_to_node_map_early_ptr NULL | |
57 | #endif | |
04d1dd20 | 58 | |
3367e56f TG |
59 | extern cpumask_t node_to_cpumask_map[]; |
60 | ||
43238382 | 61 | #define NUMA_NO_NODE (-1) |
df3825c5 | 62 | |
3367e56f | 63 | /* Returns the number of the node containing CPU 'cpu' */ |
834beda1 | 64 | #ifdef CONFIG_X86_32 |
65 | #define early_cpu_to_node(cpu) cpu_to_node(cpu) | |
3367e56f | 66 | static inline int cpu_to_node(int cpu) |
834beda1 | 67 | { |
68 | return cpu_to_node_map[cpu]; | |
69 | } | |
70 | ||
71 | #else /* CONFIG_X86_64 */ | |
b447a468 MT |
72 | |
73 | #ifdef CONFIG_SMP | |
834beda1 | 74 | static inline int early_cpu_to_node(int cpu) |
3367e56f | 75 | { |
43238382 | 76 | int *cpu_to_node_map = x86_cpu_to_node_map_early_ptr; |
df3825c5 | 77 | |
78 | if (cpu_to_node_map) | |
79 | return cpu_to_node_map[cpu]; | |
80 | else if (per_cpu_offset(cpu)) | |
81 | return per_cpu(x86_cpu_to_node_map, cpu); | |
82 | else | |
83 | return NUMA_NO_NODE; | |
3367e56f | 84 | } |
b447a468 MT |
85 | #else |
86 | #define early_cpu_to_node(cpu) cpu_to_node(cpu) | |
87 | #endif | |
3367e56f | 88 | |
834beda1 | 89 | static inline int cpu_to_node(int cpu) |
90 | { | |
5f5cd8fd IM |
91 | #ifdef CONFIG_DEBUG_PER_CPU_MAPS |
92 | if (x86_cpu_to_node_map_early_ptr) { | |
c49a4955 | 93 | printk("KERN_NOTICE cpu_to_node(%d): usage too early!\n", |
5d7d03b8 | 94 | (int)cpu); |
5f5cd8fd IM |
95 | dump_stack(); |
96 | return ((int *)x86_cpu_to_node_map_early_ptr)[cpu]; | |
c49a4955 | 97 | } |
98 | #endif | |
b447a468 | 99 | return per_cpu(x86_cpu_to_node_map, cpu); |
834beda1 | 100 | } |
aa6b5446 MT |
101 | |
102 | #ifdef CONFIG_NUMA | |
103 | ||
104 | /* Returns a pointer to the cpumask of CPUs on Node 'node'. */ | |
105 | #define node_to_cpumask_ptr(v, node) \ | |
106 | cpumask_t *v = &(node_to_cpumask_map[node]) | |
107 | ||
108 | #define node_to_cpumask_ptr_next(v, node) \ | |
109 | v = &(node_to_cpumask_map[node]) | |
110 | #endif | |
111 | ||
834beda1 | 112 | #endif /* CONFIG_X86_64 */ |
113 | ||
3367e56f TG |
114 | /* |
115 | * Returns the number of the node containing Node 'node'. This | |
116 | * architecture is flat, so it is a pretty simple function! | |
117 | */ | |
118 | #define parent_node(node) (node) | |
119 | ||
120 | /* Returns a bitmask of CPUs on Node 'node'. */ | |
121 | static inline cpumask_t node_to_cpumask(int node) | |
122 | { | |
123 | return node_to_cpumask_map[node]; | |
124 | } | |
125 | ||
126 | /* Returns the number of the first CPU on Node 'node'. */ | |
127 | static inline int node_to_first_cpu(int node) | |
128 | { | |
129 | cpumask_t mask = node_to_cpumask(node); | |
130 | ||
131 | return first_cpu(mask); | |
132 | } | |
133 | ||
134 | #define pcibus_to_node(bus) __pcibus_to_node(bus) | |
135 | #define pcibus_to_cpumask(bus) __pcibus_to_cpumask(bus) | |
136 | ||
96a388de | 137 | #ifdef CONFIG_X86_32 |
3367e56f TG |
138 | extern unsigned long node_start_pfn[]; |
139 | extern unsigned long node_end_pfn[]; | |
140 | extern unsigned long node_remap_size[]; | |
141 | #define node_has_online_mem(nid) (node_start_pfn[nid] != node_end_pfn[nid]) | |
142 | ||
3367e56f TG |
143 | # define SD_CACHE_NICE_TRIES 1 |
144 | # define SD_IDLE_IDX 1 | |
145 | # define SD_NEWIDLE_IDX 2 | |
146 | # define SD_FORKEXEC_IDX 0 | |
147 | ||
96a388de | 148 | #else |
3367e56f | 149 | |
3367e56f TG |
150 | # define SD_CACHE_NICE_TRIES 2 |
151 | # define SD_IDLE_IDX 2 | |
1d3504fc | 152 | # define SD_NEWIDLE_IDX 2 |
3367e56f TG |
153 | # define SD_FORKEXEC_IDX 1 |
154 | ||
155 | #endif | |
156 | ||
157 | /* sched_domains SD_NODE_INIT for NUMAQ machines */ | |
158 | #define SD_NODE_INIT (struct sched_domain) { \ | |
3367e56f TG |
159 | .min_interval = 8, \ |
160 | .max_interval = 32, \ | |
161 | .busy_factor = 32, \ | |
162 | .imbalance_pct = 125, \ | |
163 | .cache_nice_tries = SD_CACHE_NICE_TRIES, \ | |
164 | .busy_idx = 3, \ | |
165 | .idle_idx = SD_IDLE_IDX, \ | |
166 | .newidle_idx = SD_NEWIDLE_IDX, \ | |
167 | .wake_idx = 1, \ | |
168 | .forkexec_idx = SD_FORKEXEC_IDX, \ | |
169 | .flags = SD_LOAD_BALANCE \ | |
170 | | SD_BALANCE_EXEC \ | |
171 | | SD_BALANCE_FORK \ | |
172 | | SD_SERIALIZE \ | |
173 | | SD_WAKE_BALANCE, \ | |
174 | .last_balance = jiffies, \ | |
175 | .balance_interval = 1, \ | |
3367e56f TG |
176 | } |
177 | ||
178 | #ifdef CONFIG_X86_64_ACPI_NUMA | |
179 | extern int __node_distance(int, int); | |
180 | #define node_distance(a, b) __node_distance(a, b) | |
181 | #endif | |
182 | ||
183 | #else /* CONFIG_NUMA */ | |
184 | ||
3367e56f TG |
185 | #endif |
186 | ||
aa6b5446 MT |
187 | #include <asm-generic/topology.h> |
188 | ||
3367e56f TG |
189 | extern cpumask_t cpu_coregroup_map(int cpu); |
190 | ||
191 | #ifdef ENABLE_TOPO_DEFINES | |
192 | #define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id) | |
193 | #define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id) | |
194 | #define topology_core_siblings(cpu) (per_cpu(cpu_core_map, cpu)) | |
195 | #define topology_thread_siblings(cpu) (per_cpu(cpu_sibling_map, cpu)) | |
196 | #endif | |
197 | ||
fe086a7b AC |
198 | static inline void arch_fix_phys_package_id(int num, u32 slot) |
199 | { | |
200 | } | |
201 | ||
30a18d6c YL |
202 | struct pci_bus; |
203 | void set_pci_bus_resources_arch_default(struct pci_bus *b); | |
204 | ||
3367e56f TG |
205 | #ifdef CONFIG_SMP |
206 | #define mc_capable() (boot_cpu_data.x86_max_cores > 1) | |
207 | #define smt_capable() (smp_num_siblings > 1) | |
208 | #endif | |
209 | ||
871d5f8d YL |
210 | #ifdef CONFIG_NUMA |
211 | extern int get_mp_bus_to_node(int busnum); | |
212 | extern void set_mp_bus_to_node(int busnum, int node); | |
213 | #else | |
214 | static inline int get_mp_bus_to_node(int busnum) | |
215 | { | |
216 | return 0; | |
217 | } | |
218 | static inline void set_mp_bus_to_node(int busnum, int node) | |
219 | { | |
220 | } | |
221 | #endif | |
222 | ||
96a388de | 223 | #endif |