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176 [zynq] interrupt on zynq

uio

  • https://yurovsky.github.io/2014/10/10/linux-uio-gpio-interrupt.html
  • https://spacewire.co.uk/tutorial/leds_switches_add_buttons_int/
  • https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18842490/Testing+UIO+with+Interrupt+on+Zynq+Ultrascale

fasync

  • diagram 
    sequenceDiagram
    participant 用户进程
    participant 内核
    participant 驱动

    Note over 用户进程,驱动: 初始化阶段
    用户进程->>内核: 1. fcntl(F_SETOWN, pid)
    用户进程->>内核: 2. fcntl(F_SETFL, FASYNC)
    内核->>驱动: 3. 调用.fasync()
    驱动->>内核: 4. fasync_helper()注册回调

    Note over 用户进程,驱动: 数据就绪阶段
    驱动->>驱动: 5. 设备数据到达(中断/轮询)
    驱动->>内核: 6. kill_fasync(SIGIO, POLL_IN)
    内核->>用户进程: 7. 发送SIGIO信号

    Note over 用户进程: 响应阶段
    用户进程->>驱动: 8. read()读取数据
    驱动->>用户进程: 9. 返回数据
  • https://blog.csdn.net/qq_42330920/article/details/119911517
  • https://www.cnblogs.com/yuanqiangfei/p/16145657.html
  • https://www.cnblogs.com/physworld/p/14839320.html

others

  • https://jvns.ca/blog/2017/06/03/async-io-on-linux--select--poll--and-epoll/
  • https://www.zynqnotes.com/linux-irq-mapping
  • https://www.zynqnotes.com/pl-ps-interrupt-1
  • https://xilinx-wiki.atlassian.net/wiki/spaces/A/pages/18842020/Cascade+Interrupt+Controller+support+in+DTG
  • https://ax7010-20231-v101.readthedocs.io/zh-cn/latest/7010_S6_RSTdocument_CN/8_%E4%B8%AD%E6%96%AD_CN.html

Comments

konosubakonoakua · 2025-05-08T07:20:47Z

axi gpio regs for interrupt

![Image](../assets/176/1.png) ![Image](../assets/176/2.png) ![Image](../assets/176/3.png)

konosubakonoakua · 2025-05-09T08:46:00Z

realdigital