1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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 | |
8 | #include <linux/types.h> |
9 | #include <linux/percpu.h> |
10 | |
11 | void topology_normalize_cpu_scale(void); |
12 | int topology_update_cpu_topology(void); |
13 | |
14 | #ifdef CONFIG_ACPI_CPPC_LIB |
15 | void topology_init_cpu_capacity_cppc(void); |
16 | #endif |
17 | |
18 | struct device_node; |
19 | bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu); |
20 | |
21 | DECLARE_PER_CPU(unsigned long, cpu_scale); |
22 | |
23 | static inline unsigned long topology_get_cpu_scale(int cpu) |
24 | { |
25 | return per_cpu(cpu_scale, cpu); |
26 | } |
27 | |
28 | void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity); |
29 | |
30 | DECLARE_PER_CPU(unsigned long, arch_freq_scale); |
31 | |
32 | static inline unsigned long topology_get_freq_scale(int cpu) |
33 | { |
34 | return per_cpu(arch_freq_scale, cpu); |
35 | } |
36 | |
37 | void topology_set_freq_scale(const struct cpumask *cpus, unsigned long cur_freq, |
38 | unsigned long max_freq); |
39 | bool topology_scale_freq_invariant(void); |
40 | |
41 | enum scale_freq_source { |
42 | SCALE_FREQ_SOURCE_CPUFREQ = 0, |
43 | SCALE_FREQ_SOURCE_ARCH, |
44 | SCALE_FREQ_SOURCE_CPPC, |
45 | }; |
46 | |
47 | struct scale_freq_data { |
48 | enum scale_freq_source source; |
49 | void (*set_freq_scale)(void); |
50 | }; |
51 | |
52 | void topology_scale_freq_tick(void); |
53 | void topology_set_scale_freq_source(struct scale_freq_data *data, const struct cpumask *cpus); |
54 | void topology_clear_scale_freq_source(enum scale_freq_source source, const struct cpumask *cpus); |
55 | |
56 | DECLARE_PER_CPU(unsigned long, thermal_pressure); |
57 | |
58 | static inline unsigned long topology_get_thermal_pressure(int cpu) |
59 | { |
60 | return per_cpu(thermal_pressure, cpu); |
61 | } |
62 | |
63 | void topology_update_thermal_pressure(const struct cpumask *cpus, |
64 | unsigned long capped_freq); |
65 | |
66 | struct cpu_topology { |
67 | int thread_id; |
68 | int core_id; |
69 | int cluster_id; |
70 | int package_id; |
71 | cpumask_t thread_sibling; |
72 | cpumask_t core_sibling; |
73 | cpumask_t cluster_sibling; |
74 | cpumask_t llc_sibling; |
75 | }; |
76 | |
77 | #ifdef CONFIG_GENERIC_ARCH_TOPOLOGY |
78 | extern struct cpu_topology cpu_topology[NR_CPUS]; |
79 | |
80 | #define topology_physical_package_id(cpu) (cpu_topology[cpu].package_id) |
81 | #define topology_cluster_id(cpu) (cpu_topology[cpu].cluster_id) |
82 | #define topology_core_id(cpu) (cpu_topology[cpu].core_id) |
83 | #define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling) |
84 | #define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling) |
85 | #define topology_cluster_cpumask(cpu) (&cpu_topology[cpu].cluster_sibling) |
86 | #define topology_llc_cpumask(cpu) (&cpu_topology[cpu].llc_sibling) |
87 | void init_cpu_topology(void); |
88 | void store_cpu_topology(unsigned int cpuid); |
89 | const struct cpumask *cpu_coregroup_mask(int cpu); |
90 | const struct cpumask *cpu_clustergroup_mask(int cpu); |
91 | void update_siblings_masks(unsigned int cpu); |
92 | void remove_cpu_topology(unsigned int cpuid); |
93 | void reset_cpu_topology(void); |
94 | int parse_acpi_topology(void); |
95 | #endif |
96 | |
97 | #endif /* _LINUX_ARCH_TOPOLOGY_H_ */ |
98 | |