keii.dev
1/*
2 * Copyright (C) 2020-2022 The opuntiaOS Project Authors.
3 * + Contributed by Nikita Melekhin <nimelehin@gmail.com>
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
8
9#ifndef _KERNEL_TASKING_BITS_CPU_H
10#define _KERNEL_TASKING_BITS_CPU_H
11
12#include <drivers/generic/fpu.h>
13#include <libkern/types.h>
14#include <mem/kmemzone.h>
15#include <mem/vmm.h>
16#include <platform/generic/tasking/context.h>
17#include <tasking/bits/sched.h>
18
19#define CPU_CNT 4
20#define THIS_CPU (&cpus[system_cpu_id()])
21#define FPU_ENABLED
22
23struct thread;
24typedef int cpu_state_t;
25enum CPU_STATE {
26 CPU_IN_KERNEL,
27 CPU_IN_USERLAND,
28};
29
30typedef struct {
31 int id;
32 int int_depth_counter;
33
34 pdirectory_t* pdir;
35 kmemzone_t sched_stack_zone;
36 context_t* sched_context; // context of sched's registers
37 struct thread* running_thread;
38 cpu_state_t current_state;
39 struct thread* idle_thread;
40
41 sched_data_t sched;
42
43 /* Stat */
44 time_t stat_ticks_since_boot;
45 time_t stat_system_and_idle_ticks;
46 time_t stat_user_ticks;
47
48#ifdef FPU_ENABLED
49 // Information about current state of fpu.
50 struct thread* fpu_for_thread;
51 pid_t fpu_for_pid;
52#endif // FPU_ENABLED
53} cpu_t;
54
55extern cpu_t cpus[CPU_CNT];
56
57#endif // _KERNEL_TASKING_BITS_CPU_H