On 10/04/2016 08:54 PM, Laine Stump wrote:
On 10/04/2016 12:10 PM, Laine Stump wrote:
On 10/04/2016 11:40 AM, Laszlo Ersek wrote:
Small correction to your wording though: you don't want to attach the
DMI-PCI bridge to the PXB device, but to the extra root bus provided by
the PXB.
This made me realize something - the root bus on a pxb-pcie controller
has a single slot and that slot can accept either a pcie-root-port
(ioh3420) or a dmi-to-pci-bridge. If you want to have both express and
legacy PCI devices on the same NUMA node, then you would either need to
create one pxb-pcie for the pcie-root-port and another for the
dmi-to-pci-bridge, or you would need to put the pcie-root-port and
dmi-to-pci-bridge onto different functions of the single slot. Should
the latter work properly?
Hi,
We were discussing pxb-pcie today while Dan was trying to get a particular
configuration working, and there was some disagreement about two points that I
stated above as fact (but which may just be
misunderstanding again):
1) Does pxb-pcie only provide a single slot (0)? Or does it provide 32 slots
(0-31) just like the pcie root complex?
It provides 32 slots behaving like a PCI Express Root Complex.
2) can you really only plug a pcie-root-port (ioh3420) into a pxb-pcie? Or will
it accept anything that pcie.0 accepts?
It supports only PCI Express Root Ports. It does not support Integrated Devices.
Thanks,
Marcel
