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 #include <linux/android_vendor.h>
11
12 void topology_normalize_cpu_scale(void);
13 int topology_update_cpu_topology(void);
14
15 struct device_node;
16 bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu);
17
18 DECLARE_PER_CPU(unsigned long, cpu_scale);
19
topology_get_cpu_scale(int cpu)20 static inline unsigned long topology_get_cpu_scale(int cpu)
21 {
22 return per_cpu(cpu_scale, cpu);
23 }
24
25 void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity);
26
27 DECLARE_PER_CPU(unsigned long, arch_freq_scale);
28
topology_get_freq_scale(int cpu)29 static inline unsigned long topology_get_freq_scale(int cpu)
30 {
31 return per_cpu(arch_freq_scale, cpu);
32 }
33
34 void topology_set_freq_scale(const struct cpumask *cpus, unsigned long cur_freq,
35 unsigned long max_freq);
36 bool topology_scale_freq_invariant(void);
37
38 enum scale_freq_source {
39 SCALE_FREQ_SOURCE_CPUFREQ = 0,
40 SCALE_FREQ_SOURCE_ARCH,
41 SCALE_FREQ_SOURCE_CPPC,
42 };
43
44 struct scale_freq_data {
45 enum scale_freq_source source;
46 void (*set_freq_scale)(void);
47 };
48
49 void topology_scale_freq_tick(void);
50 void topology_set_scale_freq_source(struct scale_freq_data *data, const struct cpumask *cpus);
51 void topology_clear_scale_freq_source(enum scale_freq_source source, const struct cpumask *cpus);
52
53 DECLARE_PER_CPU(unsigned long, thermal_pressure);
54
topology_get_thermal_pressure(int cpu)55 static inline unsigned long topology_get_thermal_pressure(int cpu)
56 {
57 return per_cpu(thermal_pressure, cpu);
58 }
59
60 void topology_set_thermal_pressure(const struct cpumask *cpus,
61 unsigned long th_pressure);
62
63 struct cpu_topology {
64 int thread_id;
65 int core_id;
66 int package_id;
67 int llc_id;
68 cpumask_t thread_sibling;
69 cpumask_t core_sibling;
70 cpumask_t llc_sibling;
71
72 cpumask_t android_vendor_data1;
73 };
74
75 #ifdef CONFIG_GENERIC_ARCH_TOPOLOGY
76 extern struct cpu_topology cpu_topology[NR_CPUS];
77
78 #define topology_physical_package_id(cpu) (cpu_topology[cpu].package_id)
79 #define topology_core_id(cpu) (cpu_topology[cpu].core_id)
80 #define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling)
81 #define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling)
82 #define topology_llc_cpumask(cpu) (&cpu_topology[cpu].llc_sibling)
83 void init_cpu_topology(void);
84 void store_cpu_topology(unsigned int cpuid);
85 const struct cpumask *cpu_coregroup_mask(int cpu);
86 void update_siblings_masks(unsigned int cpu);
87 void remove_cpu_topology(unsigned int cpuid);
88 void reset_cpu_topology(void);
89 int parse_acpi_topology(void);
90 #endif
91 extern bool topology_update_done;
92
93 #endif /* _LINUX_ARCH_TOPOLOGY_H_ */
94