Re: Going beyond 256 PCI buses

Jeff Garzik
2001-06-14T15:17:33Z

Jonathan Lundell wrote:
>
> At 10:14 AM -0400 2001-06-14, Jeff Garzik wrote:
> >According to the PCI spec it is -impossible- to have more than 256 buses
> >on a single "hose", so you simply have to implement multiple hoses, just
> >like Alpha (and Sparc64?) already do. That's how the hardware is forced
> >to implement it...
>
> That's right, of course. A small problem is that dev->slot_name
> becomes ambiguous, since it doesn't have any hose identification. Nor
> does it have any room for the hose id; it's fixed at 8 chars, and
> fully used (bb:dd.f\0).

Ouch. Good point. Well, extending that field's size shouldn't break
anything except binary modules (which IMHO means, it doesn't break
anything).

Jeff

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