Firmware Allocation of PCI Device Resources in Windows 7

Hello all!

I have device on PCIe which require 4GB memory space.

Unfortunately BIOS on my PC cannot configure this device during boot time,
and Windows 7 (x64) also cannot allocate resources for my device because it
probably uses configuration from BIOS.

I know that my hardware allows to configure this device to use memory space
above 4GB, because I configured it manually using direct access to PCI
configuration registers on the bootloader stage.


I read article about Firmware Allocation of PCI Device Resources in Widows
Vista:

http://www.microsoft.com/whdc/connect/pci/pci-rsc.mspx


My question is how it is done in Windows 7 ?
How to enable PCI rebalancing on Windows 7
or set up it to ignore PCI boot configuration ?

"eagersh" wrote:

> On Jun 25, 1:50 am, Poul71 <Pou...@discussions.microsoft.com> wrote:
> > Hello all!
> >
> > I have device on PCIe which require 4GB memory space.
> >
> > Unfortunately BIOS on my PC cannot configure this device during boot time,
> > and Windows 7 (x64) also cannot allocate resources for my device because it
> > probably uses configuration from BIOS.
> >
> > I know that my hardware allows to configure this device to use memory space
> > above 4GB, because I configured it manually using direct access to PCI
> > configuration registers on the bootloader stage.
> >
> > I read article about Firmware Allocation of PCI Device Resources in Widows
> > Vista:
> >
> > http://www.microsoft.com/whdc/connect/pci/pci-rsc.mspx
> >
> > My question is how it is done in Windows 7 ?
> > How to enable PCI rebalancing on Windows 7
> > or set up it to ignore PCI boot configuration ?
>
> Look Jake Oshins explanation. He explains how PCI resources assigned
> in Windows
> http://www.osronline.com/showThread.cfm?link=176792
>
> Igor Sharovar
> .
>

Thanks for replay. Now i know what PnP Manager is doing in theory.
Point 5 in Jake's message is interesting for me, because probably arbiter
has some problem and uses boot configuration for my PCI device.
I have to look in WinDbg, but I am afraid that there is something more to do
to enable PCI rebalancing on Windows 7.