https://github.com/torvalds/linux
- HEAD
- refs/heads/arm64-uaccess
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/certifi-2024.7.4
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/idna-3.7
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/requests-2.32.2
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/setuptools-70.0.0
- refs/heads/dependabot/pip/drivers/gpu/drm/ci/xfails/urllib3-2.2.2
- refs/heads/master
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Tip revision: 4ef7675344d687a0ef5b0d7c0cee12da005870c0 authored by Linus Torvalds on 21 December 2015, 00:06:09 UTC
Linux 4.4-rc6
Linux 4.4-rc6
Tip revision: 4ef7675
IRQ.txt
Chinese translated version of Documentation/IRQ.txt
If you have any comment or update to the content, please contact the
original document maintainer directly. However, if you have a problem
communicating in English you can also ask the Chinese maintainer for
help. Contact the Chinese maintainer if this translation is outdated
or if there is a problem with the translation.
Maintainer: Eric W. Biederman <ebiederman@xmission.com>
Chinese maintainer: Fu Wei <tekkamanninja@gmail.com>
---------------------------------------------------------------------
Documentation/IRQ.txt 的中文翻译
如果想评论或更新本文的内容,请直接联系原文档的维护者。如果你使用英文
交流有困难的话,也可以向中文版维护者求助。如果本翻译更新不及时或者翻
译存在问题,请联系中文版维护者。
英文版维护者: Eric W. Biederman <ebiederman@xmission.com>
中文版维护者: 傅炜 Fu Wei <tekkamanninja@gmail.com>
中文版翻译者: 傅炜 Fu Wei <tekkamanninja@gmail.com>
中文版校译者: 傅炜 Fu Wei <tekkamanninja@gmail.com>
以下为正文
---------------------------------------------------------------------
何为 IRQ?
一个 IRQ 是来自某个设备的一个中断请求。目前,它们可以来自一个硬件引脚,
或来自一个数据包。多个设备可能连接到同个硬件引脚,从而共享一个 IRQ。
一个 IRQ 编号是用于告知硬件中断源的内核标识。通常情况下,这是一个
全局 irq_desc 数组的索引,但是除了在 linux/interrupt.h 中的实现,
具体的细节是体系结构特定的。
一个 IRQ 编号是设备上某个可能的中断源的枚举。通常情况下,枚举的编号是
该引脚在系统内中断控制器的所有输入引脚中的编号。对于 ISA 总线中的情况,
枚举的是在两个 i8259 中断控制器中 16 个输入引脚。
架构可以对 IRQ 编号指定额外的含义,在硬件涉及任何手工配置的情况下,
是被提倡的。ISA 的 IRQ 是一个分配这类额外含义的典型例子。