/* * Copyright 2002-2006, Haiku Inc. All rights reserved. * Distributed under the terms of the MIT License. * * Copyright 2002, Travis Geiselbrecht. All rights reserved. * Distributed under the terms of the NewOS License. */ #ifndef _KERNEL_CPU_H #define _KERNEL_CPU_H #include #include #include #include #include // define PAUSE, if not done in arch/cpu.h #ifndef PAUSE # define PAUSE() #endif struct kernel_args; namespace BKernel { struct Thread; } using BKernel::Thread; typedef enum cpu_topology_level { CPU_TOPOLOGY_SMT, CPU_TOPOLOGY_CORE, CPU_TOPOLOGY_PACKAGE, // CPU_TOPOLOGY_LEVELS } cpu_topology_level; typedef struct cpu_topology_node { cpu_topology_level level; int id; cpu_topology_node** children; int children_count; } cpu_topology_node; /* CPU local data structure */ typedef struct cpu_ent { int cpu_num; // thread.c: used to force a reschedule at quantum expiration time bool preempted; timer quantum_timer; // keeping track of CPU activity bigtime_t active_time; bigtime_t irq_time; bigtime_t interrupt_time; bigtime_t last_kernel_time; bigtime_t last_user_time; // used in the kernel debugger addr_t fault_handler; addr_t fault_handler_stack_pointer; jmp_buf fault_jump_buffer; Thread* running_thread; Thread* previous_thread; bool invoke_scheduler; bool disabled; // CPU topology information int topology_id[CPU_TOPOLOGY_LEVELS]; int cache_id[CPU_MAX_CACHE_LEVEL]; // IRQs assigned to this CPU struct list irqs; spinlock irqs_lock; // arch-specific stuff arch_cpu_info arch; } cpu_ent __attribute__((aligned(64))); //extern cpu_ent gCPU[MAX_BOOT_CPUS]; extern cpu_ent gCPU[]; extern uint32 gCPUCacheLevelCount; #ifdef __cplusplus extern "C" { #endif status_t cpu_preboot_init_percpu(struct kernel_args *args, int curr_cpu); status_t cpu_init(struct kernel_args *args); status_t cpu_init_percpu(struct kernel_args *ka, int curr_cpu); status_t cpu_init_post_vm(struct kernel_args *args); status_t cpu_init_post_modules(struct kernel_args *args); bigtime_t cpu_get_active_time(int32 cpu); cpu_ent *get_cpu_struct(void); extern inline cpu_ent *get_cpu_struct(void) { return &gCPU[smp_get_current_cpu()]; } status_t cpu_build_topology_tree(void); cpu_topology_node* get_cpu_topology(void); status_t increase_cpu_performance(int delta, bool allowBoost); status_t decrease_cpu_performance(int delta); void _user_clear_caches(void *address, size_t length, uint32 flags); bool _user_cpu_enabled(int32 cpu); status_t _user_set_cpu_enabled(int32 cpu, bool enabled); #ifdef __cplusplus } #endif #endif /* _KERNEL_CPU_H */