Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
615ffd63 JL |
2 | /* |
3 | * include/linux/arch_topology.h - arch specific cpu topology information | |
4 | */ | |
5 | #ifndef _LINUX_ARCH_TOPOLOGY_H_ | |
6 | #define _LINUX_ARCH_TOPOLOGY_H_ | |
7 | ||
805df296 | 8 | #include <linux/types.h> |
0e27c567 | 9 | #include <linux/percpu.h> |
805df296 | 10 | |
4ca4f26a | 11 | void topology_normalize_cpu_scale(void); |
bb1fbdd3 | 12 | int topology_update_cpu_topology(void); |
615ffd63 JL |
13 | |
14 | struct device_node; | |
805df296 | 15 | bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu); |
615ffd63 | 16 | |
8216f588 DE |
17 | DECLARE_PER_CPU(unsigned long, cpu_scale); |
18 | ||
99c73ce1 | 19 | static inline unsigned long topology_get_cpu_scale(int cpu) |
8216f588 DE |
20 | { |
21 | return per_cpu(cpu_scale, cpu); | |
22 | } | |
615ffd63 | 23 | |
4ca4f26a | 24 | void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity); |
615ffd63 | 25 | |
eec73529 | 26 | DECLARE_PER_CPU(unsigned long, arch_freq_scale); |
0e27c567 | 27 | |
99c73ce1 | 28 | static inline unsigned long topology_get_freq_scale(int cpu) |
0e27c567 | 29 | { |
eec73529 | 30 | return per_cpu(arch_freq_scale, cpu); |
0e27c567 DE |
31 | } |
32 | ||
a20b7053 IV |
33 | void topology_set_freq_scale(const struct cpumask *cpus, unsigned long cur_freq, |
34 | unsigned long max_freq); | |
15e5d5b4 VS |
35 | bool topology_scale_freq_invariant(void); |
36 | ||
01e055c1 VK |
37 | enum scale_freq_source { |
38 | SCALE_FREQ_SOURCE_CPUFREQ = 0, | |
39 | SCALE_FREQ_SOURCE_ARCH, | |
4c38f2df | 40 | SCALE_FREQ_SOURCE_CPPC, |
01e055c1 VK |
41 | }; |
42 | ||
43 | struct scale_freq_data { | |
44 | enum scale_freq_source source; | |
45 | void (*set_freq_scale)(void); | |
46 | }; | |
47 | ||
48 | void topology_scale_freq_tick(void); | |
49 | void topology_set_scale_freq_source(struct scale_freq_data *data, const struct cpumask *cpus); | |
50 | void topology_clear_scale_freq_source(enum scale_freq_source source, const struct cpumask *cpus); | |
cd0ed03a | 51 | |
ad58cc5c TG |
52 | DECLARE_PER_CPU(unsigned long, thermal_pressure); |
53 | ||
54 | static inline unsigned long topology_get_thermal_pressure(int cpu) | |
55 | { | |
56 | return per_cpu(thermal_pressure, cpu); | |
57 | } | |
58 | ||
25980c7a VS |
59 | void topology_set_thermal_pressure(const struct cpumask *cpus, |
60 | unsigned long th_pressure); | |
ad58cc5c | 61 | |
60c1b220 AP |
62 | struct cpu_topology { |
63 | int thread_id; | |
64 | int core_id; | |
65 | int package_id; | |
66 | int llc_id; | |
67 | cpumask_t thread_sibling; | |
68 | cpumask_t core_sibling; | |
69 | cpumask_t llc_sibling; | |
70 | }; | |
71 | ||
72 | #ifdef CONFIG_GENERIC_ARCH_TOPOLOGY | |
73 | extern struct cpu_topology cpu_topology[NR_CPUS]; | |
74 | ||
75 | #define topology_physical_package_id(cpu) (cpu_topology[cpu].package_id) | |
76 | #define topology_core_id(cpu) (cpu_topology[cpu].core_id) | |
77 | #define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling) | |
78 | #define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling) | |
79 | #define topology_llc_cpumask(cpu) (&cpu_topology[cpu].llc_sibling) | |
80 | void init_cpu_topology(void); | |
81 | void store_cpu_topology(unsigned int cpuid); | |
82 | const struct cpumask *cpu_coregroup_mask(int cpu); | |
60c1b220 | 83 | void update_siblings_masks(unsigned int cpu); |
60c1b220 | 84 | void remove_cpu_topology(unsigned int cpuid); |
ca74b316 | 85 | void reset_cpu_topology(void); |
edb44e84 | 86 | int parse_acpi_topology(void); |
ca74b316 | 87 | #endif |
60c1b220 | 88 | |
615ffd63 | 89 | #endif /* _LINUX_ARCH_TOPOLOGY_H_ */ |