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[BUG REPORT] acpi pm timer 没有更新墙上时间，并且没有触发软中断。 #782

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fslongjin opened this issue Apr 28, 2024 · 3 comments
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[BUG REPORT] acpi pm timer 没有更新墙上时间，并且没有触发软中断。 #782

fslongjin opened this issue Apr 28, 2024 · 3 comments
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A-driver Area: 驱动程序 bug Something isn't working bug-report 这是一个bug报告（如果确认是一个bug，请管理人员添加`bug` label） In-progress
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DragonOS 0.1.11

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@fslongjin
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问题

acpi pm timer 没有更新墙上时间，并且没有触发软中断。

这会导致：

  1. 软中断没法触发
  2. 各种定时任务无法运行。

要实现以上功能，我认为需要设置acpi pm timer的定时器中断，然后在中断里面模仿hpet的处理逻辑去做。

参考

  1. https://wiki.osdev.org/ACPI_Timer

IRQs
The ACPI Power Management Timer generates a SCI when the counter has overflown. To know more about SCIs, see FADT#SCI_Interrupt.

  1. https://wiki.osdev.org/FADT#SCI_Interrupt
@fslongjin fslongjin added bug Something isn't working A-driver Area: 驱动程序 bug-report 这是一个bug报告（如果确认是一个bug，请管理人员添加`bug` label） labels Apr 28, 2024
@fslongjin fslongjin added this to the DragonOS 0.1.11 milestone Apr 28, 2024
@dragonosbot dragonosbot added the needs-triage 这个问题可能需要分类处理。如果已经完成分类，请移除它。 label Apr 28, 2024
@fslongjin
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@1037827920

@fslongjin fslongjin removed the needs-triage 这个问题可能需要分类处理。如果已经完成分类，请移除它。 label Apr 28, 2024
@fslongjin
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我正在修复这个bug

@fslongjin
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目前想了想，感觉应该用这个思路去做，而不是启用acpi pm timer的中断：
https://bbs.dragonos.org.cn/t/topic/214

@1037827920 1037827920 mentioned this issue May 27, 2024
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