Dear Jason Gunthorpe, On Mon, 28 Jan 2013 12:51:11 -0700, Jason Gunthorpe wrote: > On Mon, Jan 28, 2013 at 07:56:27PM +0100, Thomas Petazzoni wrote: > > > However, with the usage of the emulated PCI host bridge and emulated > > PCI-to-PCI bridges, this is not the case: bus number 0 is the emulated > > bus on which the emulated PCI-to-PCI bridges sit, so from the Linux > > point of view, the real busses start at bus 1, but from a hardware > > point of view, they start at bus 0. > > Hum.. This is a bit funny sounding, can you confirm.. Might be yes, but IIRC, when I try to enumerate the devices in the PCIe interface 0 (from a hardware point of view), passing a bus number of 1 in the PCI configuration space access registers, then it simply doesn't work. > The bus number programmed into all the end points must match the Linux > number. Ie the PCI-E Link Description register of end point devices What is this PCI-E Link Description register ? Where is it located ? Thanks, Thomas -- Thomas Petazzoni, Free Electrons Kernel, drivers, real-time and embedded Linux development, consulting, training and support. http://free-electrons.com -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
