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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-11-25 17:23:57 -0500
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-11-25 17:23:57 -0500
commit2a859ab07b6ab66f4134c4fffc341398bd3d328c (patch)
treec5e7eaf3bffbc18feb326940e39794328d98dc07 /Documentation/zh_CN/IRQ.txt
parentcedddd812a79a4fda3885a15711aee3de78c4a24 (diff)
parente716e014384688d1a50d1aa5213ee74748c6d4e0 (diff)
Merge branch 'merge' into next
Merge my own merge branch to get various fixes from there and upstream, especially the hvc console tty refcouting fixes which which testing is quite a bit harder...
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1Chinese translated version of Documentation/IRQ.txt
2
3If you have any comment or update to the content, please contact the
4original document maintainer directly. However, if you have a problem
5communicating in English you can also ask the Chinese maintainer for
6help. Contact the Chinese maintainer if this translation is outdated
7or if there is a problem with the translation.
8
9Maintainer: Eric W. Biederman <ebiederman@xmission.com>
10Chinese maintainer: Fu Wei <tekkamanninja@gmail.com>
11---------------------------------------------------------------------
12Documentation/IRQ.txt 的中文翻译
13
14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
15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
16译存在问题,请联系中文版维护者。
17英文版维护者: Eric W. Biederman <ebiederman@xmission.com>
18中文版维护者: 傅炜 Fu Wei <tekkamanninja@gmail.com>
19中文版翻译者: 傅炜 Fu Wei <tekkamanninja@gmail.com>
20中文版校译者: 傅炜 Fu Wei <tekkamanninja@gmail.com>
21
22
23以下为正文
24---------------------------------------------------------------------
25何为 IRQ?
26
27一个 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,
28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。
29
30一个 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
31全局 irq_desc 数组的索引,但是除了在 linux/interrupt.h 中的实现,
32具体的细节是体系结构特定的。
33
34一个 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
35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,
36枚举的是在两个 i8259 中断控制器中 16 个输入引脚。
37
38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,
39是被提倡的。ISA 的 IRQ 是一个分配这类额外含义的典型例子。