Subject: Re: byte-sized PCI conf regs?
To: Todd Whitesel <>
From: Matthias Drochner <>
List: tech-kern
Date: 09/20/1999 14:47:32 said:
> Is there a way to do the equivalent of pci_conf_{read,write} on a
> single byte? 

No, it needs some shifting/masking/&/| to get this done.

(I believe config space accesses are "usually" idempotent,
so it shouldn't be a problem.)

> PCI conf 0x40 was 0
> PCI conf 0x40 set to 0

Strange, that should work.

best regards