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改用int250作为系统调用

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This commit is contained in:
fslongjin
2022-04-12 11:54:44 +08:00
parent 011246281a
commit 2d7b2b7048
15 changed files with 236 additions and 104 deletions
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18
kernel/driver/timers/HPET/HPET.c
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@ -50,6 +50,7 @@ hardware_intr_controller HPET_intr_controller =
void HPET_handler(uint64_t number, uint64_t param, struct pt_regs *regs)
{
printk("(HPET)");
switch (param)
{
case 0: // 定时器0中断
@ -73,7 +74,10 @@ void HPET_handler(uint64_t number, uint64_t param, struct pt_regs *regs)
}
if (sched_cfs_ready_queue.cpu_exec_proc_jiffies <= 0)
{
current_pcb->flags |= PROC_NEED_SCHED;
kdebug("need_sched. proc_jiffies=%ld", sched_cfs_ready_queue.cpu_exec_proc_jiffies);
}
break;
@ -138,7 +142,7 @@ int HPET_init()
// 由于这段内存与io/apic的映射在同一物理页内，因此不需要重复映射
HPET_REG_BASE = SPECIAL_MEMOEY_MAPPING_VIRT_ADDR_BASE + hpet_table->address;
}
// 读取计时精度并计算频率
uint64_t tmp;
tmp = *(uint64_t *)(HPET_REG_BASE + GCAP_ID);
@ -152,18 +156,22 @@ int HPET_init()
// 使用I/O APIC 的IRQ2接收hpet定时器0的中断
apic_make_rte_entry(&entry, 34, IO_APIC_FIXED, DEST_PHYSICAL, IDLE, POLARITY_HIGH, IRR_RESET, EDGE_TRIGGER, MASKED, 0);
*(uint64_t *)(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
io_mfence();
*(uint64_t *)(HPET_REG_BASE + MAIN_CNT) = 0;
io_mfence();
*(uint64_t *)(HPET_REG_BASE + TIM0_CONF) = 0x004c; // 设置定时器0为周期定时，边沿触发，投递到IO APIC的2号引脚（这里有点绕，写的是8259的引脚号，但是因为禁用了8259，因此会被路由到IO APIC的2号引脚）
io_mfence();
*(uint64_t *)(HPET_REG_BASE + TIM0_COMP) = HPET_freq; // 1s触发一次中断
io_mfence();
rtc_get_cmos_time(&rtc_now);
*(uint64_t *)(HPET_REG_BASE + MAIN_CNT) = 0;
kinfo("HPET Initialized.");
*(uint64_t *)(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
io_mfence();
// 注册中断
irq_register(34, &entry, &HPET_handler, 0, &HPET_intr_controller, "HPET0");
kinfo("HPET Initialized.");
}