PEX 8111 PCI-Express to PCI Bridge and FreeBSD

[John Baldwin]

On Thursday 27 December 2007 08:16:59 am Konstantin Dimitrov wrote:
> hello All,
> 
> as far as i understand the documentation of the PEX 8111 PCI
> Express-to-PCI Bridge, which is freely available here:
> 
> http://www.plxtech.com/products/expresslane/pex8111.asp
> 
> it is "Fully Transparent PCI Express to PCI Bridge", but under FreeBSD
> it doesn't seem to behave as transparent, i.e. it doesn't seem to work
> well with the standard FreeBSD PCI-PCI bridge driver, because it's not
> possible to read/write from/to the PCI IC behind PEX 8111.

Can you provide more detail on what you mean by read/write?  Can you not do 
config space transactions to child devices of the bridge or can you not 
access mapped BARs of child devices or what exactly?

-- 
John Baldwin