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1/* SPDX-License-Identifier: GPL-2.0 */2/*3 * include/linux/arch_topology.h - arch specific cpu topology information4 */5#ifndef _LINUX_ARCH_TOPOLOGY_H_6#define _LINUX_ARCH_TOPOLOGY_H_7 8#include <linux/types.h>9#include <linux/percpu.h>10 11void topology_normalize_cpu_scale(void);12int topology_update_cpu_topology(void);13 14struct device_node;15bool topology_parse_cpu_capacity(struct device_node *cpu_node, int cpu);16 17DECLARE_PER_CPU(unsigned long, cpu_scale);18 19static inline unsigned long topology_get_cpu_scale(int cpu)20{21 return per_cpu(cpu_scale, cpu);22}23 24void topology_set_cpu_scale(unsigned int cpu, unsigned long capacity);25 26DECLARE_PER_CPU(unsigned long, capacity_freq_ref);27 28static inline unsigned long topology_get_freq_ref(int cpu)29{30 return per_cpu(capacity_freq_ref, cpu);31}32 33DECLARE_PER_CPU(unsigned long, arch_freq_scale);34 35static inline unsigned long topology_get_freq_scale(int cpu)36{37 return per_cpu(arch_freq_scale, cpu);38}39 40void topology_set_freq_scale(const struct cpumask *cpus, unsigned long cur_freq,41 unsigned long max_freq);42bool topology_scale_freq_invariant(void);43 44enum scale_freq_source {45 SCALE_FREQ_SOURCE_CPUFREQ = 0,46 SCALE_FREQ_SOURCE_ARCH,47 SCALE_FREQ_SOURCE_CPPC,48};49 50struct scale_freq_data {51 enum scale_freq_source source;52 void (*set_freq_scale)(void);53};54 55void topology_scale_freq_tick(void);56void topology_set_scale_freq_source(struct scale_freq_data *data, const struct cpumask *cpus);57void topology_clear_scale_freq_source(enum scale_freq_source source, const struct cpumask *cpus);58 59DECLARE_PER_CPU(unsigned long, hw_pressure);60 61static inline unsigned long topology_get_hw_pressure(int cpu)62{63 return per_cpu(hw_pressure, cpu);64}65 66void topology_update_hw_pressure(const struct cpumask *cpus,67 unsigned long capped_freq);68 69struct cpu_topology {70 int thread_id;71 int core_id;72 int cluster_id;73 int package_id;74 cpumask_t thread_sibling;75 cpumask_t core_sibling;76 cpumask_t cluster_sibling;77 cpumask_t llc_sibling;78};79 80#ifdef CONFIG_GENERIC_ARCH_TOPOLOGY81extern struct cpu_topology cpu_topology[NR_CPUS];82 83#define topology_physical_package_id(cpu) (cpu_topology[cpu].package_id)84#define topology_cluster_id(cpu) (cpu_topology[cpu].cluster_id)85#define topology_core_id(cpu) (cpu_topology[cpu].core_id)86#define topology_core_cpumask(cpu) (&cpu_topology[cpu].core_sibling)87#define topology_sibling_cpumask(cpu) (&cpu_topology[cpu].thread_sibling)88#define topology_cluster_cpumask(cpu) (&cpu_topology[cpu].cluster_sibling)89#define topology_llc_cpumask(cpu) (&cpu_topology[cpu].llc_sibling)90void init_cpu_topology(void);91void store_cpu_topology(unsigned int cpuid);92const struct cpumask *cpu_coregroup_mask(int cpu);93const struct cpumask *cpu_clustergroup_mask(int cpu);94void update_siblings_masks(unsigned int cpu);95void remove_cpu_topology(unsigned int cpuid);96void reset_cpu_topology(void);97int parse_acpi_topology(void);98void freq_inv_set_max_ratio(int cpu, u64 max_rate);99#endif100 101#endif /* _LINUX_ARCH_TOPOLOGY_H_ */102