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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 | */ | |
1965aae3 PA |
25 | #ifndef _ASM_X86_TOPOLOGY_H |
26 | #define _ASM_X86_TOPOLOGY_H | |
3367e56f | 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 | ||
23ca4bba MT |
38 | /* Node not present */ |
39 | #define NUMA_NO_NODE (-1) | |
40 | ||
3367e56f TG |
41 | #ifdef CONFIG_NUMA |
42 | #include <linux/cpumask.h> | |
43 | #include <asm/mpspec.h> | |
44 | ||
834beda1 | 45 | #ifdef CONFIG_X86_32 |
04d1dd20 | 46 | |
23ca4bba MT |
47 | /* Mappings between logical cpu number and node number */ |
48 | extern int cpu_to_node_map[]; | |
df3825c5 | 49 | |
3367e56f TG |
50 | /* Returns the number of the node containing CPU 'cpu' */ |
51 | static inline int cpu_to_node(int cpu) | |
834beda1 | 52 | { |
53 | return cpu_to_node_map[cpu]; | |
54 | } | |
23ca4bba | 55 | #define early_cpu_to_node(cpu) cpu_to_node(cpu) |
834beda1 | 56 | |
57 | #else /* CONFIG_X86_64 */ | |
b447a468 | 58 | |
23ca4bba MT |
59 | /* Mappings between logical cpu number and node number */ |
60 | DECLARE_EARLY_PER_CPU(int, x86_cpu_to_node_map); | |
61 | ||
62 | /* Returns the number of the current Node. */ | |
e7a22c1e BG |
63 | DECLARE_PER_CPU(int, node_number); |
64 | #define numa_node_id() percpu_read(node_number) | |
23ca4bba MT |
65 | |
66 | #ifdef CONFIG_DEBUG_PER_CPU_MAPS | |
67 | extern int cpu_to_node(int cpu); | |
68 | extern int early_cpu_to_node(int cpu); | |
3367e56f | 69 | |
23ca4bba MT |
70 | #else /* !CONFIG_DEBUG_PER_CPU_MAPS */ |
71 | ||
72 | /* Returns the number of the node containing CPU 'cpu' */ | |
834beda1 | 73 | static inline int cpu_to_node(int cpu) |
74 | { | |
b447a468 | 75 | return per_cpu(x86_cpu_to_node_map, cpu); |
834beda1 | 76 | } |
aa6b5446 | 77 | |
23ca4bba MT |
78 | /* Same function but used if called before per_cpu areas are setup */ |
79 | static inline int early_cpu_to_node(int cpu) | |
80 | { | |
f10fcd47 | 81 | return early_per_cpu(x86_cpu_to_node_map, cpu); |
23ca4bba | 82 | } |
834beda1 | 83 | |
71ee73e7 RR |
84 | #endif /* !CONFIG_DEBUG_PER_CPU_MAPS */ |
85 | ||
86 | #endif /* CONFIG_X86_64 */ | |
3367e56f | 87 | |
71ee73e7 | 88 | /* Mappings between node number and cpus on that node. */ |
c032ef60 | 89 | extern cpumask_var_t node_to_cpumask_map[MAX_NUMNODES]; |
71ee73e7 RR |
90 | |
91 | #ifdef CONFIG_DEBUG_PER_CPU_MAPS | |
73e907de | 92 | extern const struct cpumask *cpumask_of_node(int node); |
71ee73e7 | 93 | #else |
23ca4bba | 94 | /* Returns a pointer to the cpumask of CPUs on Node 'node'. */ |
c032ef60 | 95 | static inline const struct cpumask *cpumask_of_node(int node) |
3367e56f TG |
96 | { |
97 | return node_to_cpumask_map[node]; | |
98 | } | |
71ee73e7 | 99 | #endif |
23ca4bba | 100 | |
6470aff6 BG |
101 | extern void setup_node_to_cpumask_map(void); |
102 | ||
23ca4bba MT |
103 | /* |
104 | * Returns the number of the node containing Node 'node'. This | |
105 | * architecture is flat, so it is a pretty simple function! | |
106 | */ | |
107 | #define parent_node(node) (node) | |
108 | ||
3367e56f | 109 | #define pcibus_to_node(bus) __pcibus_to_node(bus) |
3367e56f | 110 | |
96a388de | 111 | #ifdef CONFIG_X86_32 |
3367e56f TG |
112 | extern unsigned long node_start_pfn[]; |
113 | extern unsigned long node_end_pfn[]; | |
114 | extern unsigned long node_remap_size[]; | |
115 | #define node_has_online_mem(nid) (node_start_pfn[nid] != node_end_pfn[nid]) | |
116 | ||
3367e56f TG |
117 | # define SD_CACHE_NICE_TRIES 1 |
118 | # define SD_IDLE_IDX 1 | |
3367e56f | 119 | |
96a388de | 120 | #else |
3367e56f | 121 | |
3367e56f TG |
122 | # define SD_CACHE_NICE_TRIES 2 |
123 | # define SD_IDLE_IDX 2 | |
3367e56f TG |
124 | |
125 | #endif | |
126 | ||
9fcd18c9 | 127 | /* sched_domains SD_NODE_INIT for NUMA machines */ |
47734f89 IM |
128 | #define SD_NODE_INIT (struct sched_domain) { \ |
129 | .min_interval = 8, \ | |
130 | .max_interval = 32, \ | |
131 | .busy_factor = 32, \ | |
132 | .imbalance_pct = 125, \ | |
133 | .cache_nice_tries = SD_CACHE_NICE_TRIES, \ | |
134 | .busy_idx = 3, \ | |
135 | .idle_idx = SD_IDLE_IDX, \ | |
0ec9fab3 | 136 | .newidle_idx = 0, \ |
78e7ed53 | 137 | .wake_idx = 0, \ |
b8a543ea | 138 | .forkexec_idx = 0, \ |
47734f89 IM |
139 | \ |
140 | .flags = 1*SD_LOAD_BALANCE \ | |
840a0653 | 141 | | 1*SD_BALANCE_NEWIDLE \ |
47734f89 IM |
142 | | 1*SD_BALANCE_EXEC \ |
143 | | 1*SD_BALANCE_FORK \ | |
182a85f8 | 144 | | 0*SD_BALANCE_WAKE \ |
47734f89 | 145 | | 1*SD_WAKE_AFFINE \ |
6b9de613 | 146 | | 0*SD_PREFER_LOCAL \ |
47734f89 IM |
147 | | 0*SD_SHARE_CPUPOWER \ |
148 | | 0*SD_POWERSAVINGS_BALANCE \ | |
149 | | 0*SD_SHARE_PKG_RESOURCES \ | |
150 | | 1*SD_SERIALIZE \ | |
47734f89 IM |
151 | | 0*SD_PREFER_SIBLING \ |
152 | , \ | |
153 | .last_balance = jiffies, \ | |
154 | .balance_interval = 1, \ | |
3367e56f TG |
155 | } |
156 | ||
157 | #ifdef CONFIG_X86_64_ACPI_NUMA | |
158 | extern int __node_distance(int, int); | |
159 | #define node_distance(a, b) __node_distance(a, b) | |
160 | #endif | |
161 | ||
23ca4bba MT |
162 | #else /* !CONFIG_NUMA */ |
163 | ||
f2a08271 MT |
164 | static inline int numa_node_id(void) |
165 | { | |
166 | return 0; | |
167 | } | |
168 | ||
f2a08271 MT |
169 | static inline int early_cpu_to_node(int cpu) |
170 | { | |
171 | return 0; | |
172 | } | |
23ca4bba | 173 | |
6470aff6 BG |
174 | static inline void setup_node_to_cpumask_map(void) { } |
175 | ||
3367e56f TG |
176 | #endif |
177 | ||
aa6b5446 MT |
178 | #include <asm-generic/topology.h> |
179 | ||
030bb203 | 180 | extern const struct cpumask *cpu_coregroup_mask(int cpu); |
3367e56f TG |
181 | |
182 | #ifdef ENABLE_TOPO_DEFINES | |
183 | #define topology_physical_package_id(cpu) (cpu_data(cpu).phys_proc_id) | |
184 | #define topology_core_id(cpu) (cpu_data(cpu).cpu_core_id) | |
7ad728f9 RR |
185 | #define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu)) |
186 | #define topology_thread_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu)) | |
23ca4bba MT |
187 | |
188 | /* indicates that pointers to the topology cpumask_t maps are valid */ | |
189 | #define arch_provides_topology_pointers yes | |
3367e56f TG |
190 | #endif |
191 | ||
fe086a7b AC |
192 | static inline void arch_fix_phys_package_id(int num, u32 slot) |
193 | { | |
194 | } | |
195 | ||
30a18d6c | 196 | struct pci_bus; |
0e94ecd0 | 197 | void x86_pci_root_bus_res_quirks(struct pci_bus *b); |
30a18d6c | 198 | |
3367e56f | 199 | #ifdef CONFIG_SMP |
2ff799d3 VS |
200 | #define mc_capable() ((boot_cpu_data.x86_max_cores > 1) && \ |
201 | (cpumask_weight(cpu_core_mask(0)) != nr_cpu_ids)) | |
3367e56f TG |
202 | #define smt_capable() (smp_num_siblings > 1) |
203 | #endif | |
204 | ||
871d5f8d YL |
205 | #ifdef CONFIG_NUMA |
206 | extern int get_mp_bus_to_node(int busnum); | |
207 | extern void set_mp_bus_to_node(int busnum, int node); | |
208 | #else | |
209 | static inline int get_mp_bus_to_node(int busnum) | |
210 | { | |
211 | return 0; | |
212 | } | |
213 | static inline void set_mp_bus_to_node(int busnum, int node) | |
214 | { | |
215 | } | |
216 | #endif | |
217 | ||
1965aae3 | 218 | #endif /* _ASM_X86_TOPOLOGY_H */ |