Re: Handling interrupts from userspace

Alan Cox (alan@lxorguk.ukuu.org.uk)
Thu, 29 Jul 1999 14:48:32 +0100 (BST)

> If this is not possible ... is there any _generic_ driver to which I could
> "attach" a userspace application in order for this app to know when an
> interrupt has happened ?!?!

The kernel has to clear the IRQ cause on PCI or Nubus which means it has
to know about the card. Writing a small card specific driver to send
a signal each irq and clear the irq in kernel space works

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