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fb417a5e81
* 调整：使用宏定义来声明usb请求包 * new: 获取usb设备的config描述符 * new: 获取接口及端点描述符 * 临时修正系统根分区的挂载，使得能在真机上启动shell * xhci: set_config * bugfix： 解决之前错误的将control_endpoint信息绑定在xhci_hc下的bug * xhci configure endpoint(存在bug * 1 * 解决了configure endpoint出错的问题 * new: xhci驱动程序能够配置端点 * 删除trace usb的代码 xhci: 获取设备描述符并配置endpoint 存在问题：尚未能够正确初始化usb键盘，也没有将usb键盘相关的代码独立出来。
98 lines
2.2 KiB
C
98 lines
2.2 KiB
C
#include "apic_timer.h"
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#include <exception/irq.h>
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#include <process/process.h>
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#include <common/kprint.h>
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#include <sched/sched.h>
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// #pragma GCC push_options
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// #pragma GCC optimize("O0")
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uint64_t apic_timer_ticks_result = 0;
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void apic_timer_enable(uint64_t irq_num)
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{
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// 启动apic定时器
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io_mfence();
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uint64_t val = apic_timer_get_LVT();
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io_mfence();
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val &= (~APIC_LVT_INT_MASKED);
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io_mfence();
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apic_timer_write_LVT(val);
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io_mfence();
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}
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void apic_timer_disable(uint64_t irq_num)
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{
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apic_timer_stop();
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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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// 设置div16
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io_mfence();
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apic_timer_stop();
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io_mfence();
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apic_timer_set_div(APIC_TIMER_DIVISOR);
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io_mfence();
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// 设置初始计数
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apic_timer_set_init_cnt(*(uint64_t *)arg);
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io_mfence();
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// 填写LVT
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apic_timer_set_LVT(APIC_TIMER_IRQ_NUM, 1, APIC_LVT_Timer_Periodic);
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io_mfence();
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}
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void apic_timer_uninstall(ul irq_num)
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{
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apic_timer_write_LVT(APIC_LVT_INT_MASKED);
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io_mfence();
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}
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hardware_intr_controller apic_timer_intr_controller =
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{
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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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io_mfence();
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sched_update_jiffies();
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io_mfence();
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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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if (apic_timer_ticks_result == 0)
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{
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kBUG("APIC timer ticks in 5ms is equal to ZERO!");
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while (1)
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hlt();
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}
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kinfo("Initializing apic timer for cpu %d", proc_current_cpu_id);
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io_mfence();
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irq_register(APIC_TIMER_IRQ_NUM, &apic_timer_ticks_result, &apic_timer_handler, 0, &apic_timer_intr_controller, "apic timer");
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io_mfence();
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// kinfo("Successfully initialized apic timer for cpu %d", proc_current_cpu_id);
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} |