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70a4e5550a
* 使用rust重写了apic的驱动。 * 修正signal和调度器的部分加锁逻辑，增加回退策略。 * 把pcb的flags字段替换为无锁的 * 使用cargo管理apic的编译 * 删除makefile中指定PIC的变量 --------- Co-authored-by: Gou Ngai <ymd7823@outlook.com> Co-authored-by: 櫻井桃華 <89176634+TihayaKousaka@users.noreply.github.com>
97 lines
2.0 KiB
C
97 lines
2.0 KiB
C
#include "apic_timer.h"
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#include <common/kprint.h>
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#include <exception/irq.h>
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#include <process/process.h>
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#include <sched/sched.h>
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// bsp 是否已经完成apic时钟初始化
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static bool bsp_initialized = false;
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extern void rs_apic_timer_install(int irq_num);
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extern void rs_apic_timer_uninstall(int irq_num);
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extern void rs_apic_timer_enable(int irq_num);
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extern void rs_apic_timer_disable(int irq_num);
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extern int rs_apic_timer_handle_irq();
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/**
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* @brief 初始化AP核的apic时钟
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*
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*/
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void apic_timer_ap_core_init()
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{
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while (!bsp_initialized)
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{
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pause();
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}
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apic_timer_init();
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}
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void apic_timer_enable(uint64_t irq_num)
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{
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rs_apic_timer_enable(irq_num);
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}
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void apic_timer_disable(uint64_t irq_num)
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{
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rs_apic_timer_disable(irq_num);
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}
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/**
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* @brief 安装local apic定时器中断
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*
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* @param irq_num 中断向量号
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* @param arg 初始计数值
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* @return uint64_t
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*/
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uint64_t apic_timer_install(ul irq_num, void *arg)
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{
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rs_apic_timer_install(irq_num);
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return 0;
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}
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void apic_timer_uninstall(ul irq_num)
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{
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rs_apic_timer_uninstall(irq_num);
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}
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hardware_intr_controller apic_timer_intr_controller = {
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.enable = apic_timer_enable,
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.disable = apic_timer_disable,
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.install = apic_timer_install,
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.uninstall = apic_timer_uninstall,
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.ack = apic_local_apic_edge_ack,
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};
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/**
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* @brief local apic定时器的中断处理函数
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*
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* @param number 中断向量号
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* @param param 参数
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* @param regs 寄存器值
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*/
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void apic_timer_handler(uint64_t number, uint64_t param, struct pt_regs *regs)
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{
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rs_apic_timer_handle_irq();
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}
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/**
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* @brief 初始化local APIC定时器
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*
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*/
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void apic_timer_init()
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{
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kinfo("Initializing apic timer for cpu %d", rs_current_pcb_cpuid());
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io_mfence();
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irq_register(APIC_TIMER_IRQ_NUM, NULL, &apic_timer_handler, 0, &apic_timer_intr_controller,
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"apic timer");
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io_mfence();
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if (rs_current_pcb_cpuid() == 0)
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{
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bsp_initialized = true;
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}
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kdebug("apic timer init done for cpu %d", rs_current_pcb_cpuid());
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}
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