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refactor rtc module in rust (#118)
* 用rust重构rtc模块 * refactor the rtc module by rust * rtc-updated * rtc-updated-4 * rtc
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@ -1 +1,2 @@
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pub mod uart;
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pub mod timers;
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@ -207,8 +207,6 @@ void HPET_enable()
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// kdebug("[HPET0] conf register after modify=%#018lx", ((*(uint64_t *)(HPET_REG_BASE + TIM0_CONF))));
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// kdebug("[HPET1] conf register =%#018lx", ((*(uint64_t *)(HPET_REG_BASE + TIM1_CONF))));
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rtc_get_cmos_time(&rtc_now);
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kinfo("HPET0 enabled.");
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__write8b(HPET_REG_BASE + GEN_CONF, 3); // 置位旧设备中断路由兼容标志位、定时器组使能标志位
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@ -2,7 +2,6 @@
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#include <common/glib.h>
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#include <driver/acpi/acpi.h>
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#include <driver/timers/rtc/rtc.h>
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#define E_HPET_INIT_FAILED 1
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@ -1,10 +1,6 @@
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all: rtc.o HPET.o
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all: HPET.o
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CFLAGS += -I .
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rtc.o: rtc/rtc.c
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$(CC) $(CFLAGS) -c rtc/rtc.c -o rtc/rtc.o
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HPET.o: HPET/HPET.c
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$(CC) $(CFLAGS) -c HPET/HPET.c -o HPET/HPET.o
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1
kernel/src/driver/timers/mod.rs
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1
kernel/src/driver/timers/mod.rs
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@ -0,0 +1 @@
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pub mod rtc;
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1
kernel/src/driver/timers/rtc/mod.rs
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1
kernel/src/driver/timers/rtc/mod.rs
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@ -0,0 +1 @@
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pub mod rtc;
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@ -1,58 +0,0 @@
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#include "rtc.h"
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#include <common/kprint.h>
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/*置位0x70的第7位,禁止不可屏蔽中断*/
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#define read_cmos(addr) ({ \
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io_out8(0x70, 0x80 | addr); \
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io_in8(0x71); \
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})
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enum CMOSTimeSelector
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{
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T_SECOND = 0x0,
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T_MINUTE = 0x2,
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T_HOUR = 0x4,
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T_DAY = 0x7,
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T_MONTH = 0x8,
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T_YEAR = 0x9,
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};
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int rtc_get_cmos_time(struct rtc_time_t *t)
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{
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// 为防止中断请求打断该过程,需要先关中断
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cli();
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uint8_t status_register_B = read_cmos(0x0B); // 读取状态寄存器B
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bool is_24h = ((status_register_B & 0x02) ? true : false); // 判断是否启用24小时模式
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bool is_binary = ((status_register_B & 0x04) ? true : false); // 判断是否为二进制码
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do
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{
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t->year = read_cmos(0x09);
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t->month = read_cmos(0x08);
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t->day = read_cmos(0x07);
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t->hour = read_cmos(0x04);
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t->minute = read_cmos(0x02);
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t->second = read_cmos(0x00);
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} while (t->second != read_cmos(0x00)); // 若读取时间过程中时间发生跳变则重新读取
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// 使能NMI中断
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io_out8(0x70, 0x00);
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if (!is_binary) // 把BCD转为二进制
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{
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t->second = (t->second & 0xf) + (t->second >> 4) * 10;
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t->minute = (t->minute & 0xf) + (t->minute >> 4) * 10;
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t->hour = ((t->hour & 0xf) + ((t->hour & 0x70) >> 4) * 10) | (t->hour & 0x80);
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t->day = (t->day & 0xf) + ((t->day / 16) * 10);
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t->month = (t->month & 0xf) + (t->month >> 4) * 10;
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t->year = (t->year & 0xf) + (t->year >> 4) * 10;
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}
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t->year += 2000;
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if ((!is_24h) && t->hour & 0x80) // 将十二小时制转为24小时
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t->hour = ((t->hour & 0x7f) + 12) % 24;
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sti();
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return 0;
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}
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@ -1,21 +0,0 @@
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#pragma once
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#include <common/glib.h>
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struct rtc_time_t
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{
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int second;
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int minute;
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int hour;
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int day;
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int month;
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int year;
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}rtc_now; // rtc_now为墙上时钟,由HPET定时器0维护
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/**
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* @brief 从主板cmos中获取时间
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*
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* @param t time结构体
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* @return int 成功则为0
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*/
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int rtc_get_cmos_time(struct rtc_time_t*t);
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void rtc_init();
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89
kernel/src/driver/timers/rtc/rtc.rs
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89
kernel/src/driver/timers/rtc/rtc.rs
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@ -0,0 +1,89 @@
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pub struct rtc_time_t {
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pub second: i32,
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pub minute: i32,
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pub hour: i32,
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pub day: i32,
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pub month: i32,
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pub year: i32,
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}
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use crate::{
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arch::x86_64::interrupt::{cli, sti},
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include::bindings::bindings::{io_in8, io_out8},
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};
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///置位0x70的第7位,禁止不可屏蔽中断
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#[inline]
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fn read_cmos(addr: u8) -> u8 {
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unsafe {
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io_out8(0x70, 0x80 | addr);
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return io_in8(0x71);
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}
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}
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enum CMOSTimeSelector {
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T_SECOND = 0x00,
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T_MINUTE = 0x02,
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T_HOUR = 0x04,
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T_DAY = 0x07,
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T_MONTH = 0x08,
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T_YEAR = 0x09,
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}
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///@brief 从主板cmos中获取时间
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///
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///@param t time结构体
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///@return int 成功则为0
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pub fn rtc_get_cmos_time(t: &mut rtc_time_t) -> Result<i32,i32> {
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unsafe {
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// 为防止中断请求打断该过程,需要先关中断
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cli();
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//0x0B
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let status_register_B: u8 = read_cmos(0x0B); // 读取状态寄存器B
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let is_24h: bool = if (status_register_B & 0x02) != 0 {
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true
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} else {
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false
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}; // 判断是否启用24小时模式
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let is_binary: bool = if (status_register_B & 0x04) != 0 {
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true
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} else {
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false
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}; // 判断是否为二进制码
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loop {
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t.year = read_cmos(CMOSTimeSelector::T_YEAR as u8) as i32;
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t.month = read_cmos(CMOSTimeSelector::T_MONTH as u8) as i32;
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t.day = read_cmos(CMOSTimeSelector::T_DAY as u8) as i32;
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t.hour = read_cmos(CMOSTimeSelector::T_HOUR as u8) as i32;
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t.minute = read_cmos(CMOSTimeSelector::T_MINUTE as u8) as i32;
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t.second = read_cmos(CMOSTimeSelector::T_SECOND as u8) as i32;
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if t.second == read_cmos(CMOSTimeSelector::T_SECOND as u8) as i32 {
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break;
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} // 若读取时间过程中时间发生跳变则重新读取
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}
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io_out8(0x70, 0x00);
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if !is_binary
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// 把BCD转为二进制
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{
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t.second = (t.second & 0xf) + (t.second >> 4) * 10;
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t.minute = (t.minute & 0xf) + (t.minute >> 4) * 10;
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t.hour = ((t.hour & 0xf) + ((t.hour & 0x70) >> 4) * 10) | (t.hour & 0x80);
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t.day = (t.day & 0xf) + ((t.day / 16) * 10);
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t.month = (t.month & 0xf) + (t.month >> 4) * 10;
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t.year = (t.year & 0xf) + (t.year >> 4) * 10;
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}
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t.year += 2000;
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if (!is_24h) && (t.hour & 0x80) != 0 {
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t.hour = ((t.hour & 0x7f) + 12) % 24;
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} // 将十二小时制转为24小时
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sti();
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}
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return Ok(0);
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}
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@ -23,7 +23,7 @@
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#include <common/printk.h>
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#include <common/spinlock.h>
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#include <common/unistd.h>
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#include <driver/timers/rtc/rtc.h>
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#include <common/glib.h>
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#include <include/DragonOS/refcount.h>
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#include <include/DragonOS/signal.h>
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#include <mm/mm.h>
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@ -79,6 +79,5 @@ pub fn panic(info: &PanicInfo) -> ! {
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#[no_mangle]
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pub extern "C" fn __rust_demo_func() -> i32 {
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printk_color!(GREEN, BLACK, "__rust_demo_func()\n");
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return 0;
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}
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@ -33,7 +33,6 @@
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#include "driver/pci/pci.h"
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#include "driver/tty/tty.h"
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#include <driver/timers/HPET/HPET.h>
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#include <driver/timers/rtc/rtc.h>
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#include <driver/uart/uart.h>
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#include <driver/usb/usb.h>
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#include <driver/video/video.h>
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@ -1,5 +1,6 @@
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#![allow(dead_code)]
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use crate::include::bindings::bindings::{rtc_get_cmos_time, rtc_time_t};
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use crate::driver::timers::rtc::rtc::{rtc_get_cmos_time, rtc_time_t};
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#[allow(non_camel_case_types)]
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pub type ktime_t = i64;
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@ -23,10 +24,8 @@ fn ktime_get_real() -> ktime_t {
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year: (0),
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};
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unsafe {
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//调用rtc.h里面的函数
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rtc_get_cmos_time(&mut rtc_time);
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}
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let mut day_count: i32 = 0;
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for year in 1970..rtc_time.year {
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@ -36,9 +35,7 @@ fn ktime_get_real() -> ktime_t {
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} else {
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day_count += 365;
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}
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//println!("{},{}",year,day_count);
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}
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//println!("day count1: {}",day_count);
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for month in 1..rtc_time.month {
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match month {
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1 | 3 | 5 | 7 | 8 | 10 | 12 => day_count += 31,
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@ -46,16 +43,14 @@ fn ktime_get_real() -> ktime_t {
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4 | 6 | 9 | 11 => day_count += 30,
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_ => day_count += 0,
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}
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//println!("{}:{}",month,day_count);
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}
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day_count += rtc_time.day - 1;
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//println!("day count2: {}",day_count);
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//转换成纳秒
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let timestamp: ktime_t = day_count as i64 * 86_400_000_000_000i64
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+ (rtc_time.hour - 8) as i64 * 3_600_000_000_000i64
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+ rtc_time.minute as i64 * 60_000_000_000i64
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+ rtc_time.second as i64 * 1_000_000_000i64 as ktime_t;
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+ rtc_time.second as i64 * 1_000_000_000u64 as ktime_t;
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return timestamp;
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}
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@ -2,7 +2,7 @@
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#include <common/glib.h>
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#include <driver/timers/HPET/HPET.h>
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#include <driver/timers/rtc/rtc.h>
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// 定义LONG_MAX为最大超时时间 - 允许负数
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#define MAX_TIMEOUT (int64_t)((1ul << 63) - 1)
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