PCI probe code

Todd Inglett tinglett at vnet.ibm.com
Sat Sep 21 02:01:45 EST 2002

On Thu, 2002-09-19 at 05:15, Benjamin Herrenschmidt wrote:

> One of them is that OF will not assign BARs that aren't requested
> by a card's OF driver (typically most ATI video cards with OF driver
> will not request the IO BAR). The kernel wants all BARs assigned.

I've never seen this at least with IBM's firmware.  For example, if I
put in a video capture card where there is clearly no driver the BARs
still get assigned properly.

However, it could be possible that this only occurs if a driver *does*
exist.  Maybe the firmware goes down a non-driver path otherwise.

Are you trying to use the bar reallocation code for hot plug?


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