Re: Opterons and setting the pci bus master bit

[Mark Hounschell <markh@compro.net>]

Alan Cox wrote:
> On Gwe, 2005-09-30 at 13:10 -0400, Mark Hounschell wrote:
> > everything is fine. When we connect the same chassis to an Intel P4 box 
> > everything is fine. It looks like it is the kernel that sets this bit 
> > because we have never set it in any of our drivers, yet on the intel 
> > boxes it gets set. Why would this bit not be set when the chassis is 
> > connected to an Opteron. We are running 32-bit mode BTW. I am using a 
> > 2.6.11.9 kernel. Is this a motherboard problem or could this be a kernel 
> > problem?
>
> If your device needs to bus master you need to call
> pci_set_master(pci_dev). The bus mastering setup prior to that really
> depends on the BIOS and phase of the moon.
>
> See Documentation/pci.txt
>
> Alan

Ok, thats what I'll do then.

Thanks for the info.
Mark



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