Re: pci_intr_alloc() vs pci_intr_establish() - retry type?

[Michael <macallan%netbsd.org@localhost>]

Hello,

On Wed, 28 Nov 2018 07:48:09 -0500 (EST)
Mouse <mouse%Rodents-Montreal.ORG@localhost> wrote:

> >> This reminds me - how does a driver know if any kind of MSI support
> >> is even available?  
> > it shouldn't need to.  
> 
> Okay, then I'm missing something.  I've seen hardware where enabling
> MSI is something device-specific (a value in a register, typically),
> meaning _something_ MD, presumably the driver, has to be involved if
> MSI is to be used.

Or, for that matter, if it can use one IRQ or - say - 8 MSI.

have fun
Michael