On Jan 29, 2008, at 8:20 AM, Laurent Lagrange wrote: > Hello, > > I have a MPC8641 based board. I try to use the two PCIe controllers. > My > firmware configures (physically) the PCI buses as follow: > > ------------------+ > MPC8641 PCIe 1 | bus 1 +--------------+ > | --------------> | PCI device 0 | > BUS 0 | +--------------+ > - - - - - - - - - + > MPC8641 PCIe 2 | bus 3 +--------------+ > | --------------> | PCI device 1 | > BUS 2 | +--------------+ > ------------------+ > > I launch the Linux image (2.6.23.9). During the Kernel PCI > configuration, > buses behind the 2nd MPC8641 PCIe are skipped because its primary > bus don't > start at bus number 0. The kernel reconfigure the primary bus number > of the > MPC8641 PCIe 2 controller from 2 to 0. > > I can patch the kernel to work with my firmware but I don't know if > my PCI > configuration is the good one. > > What is the common way to configure the PCI for Linux when a new > controller > is found: start the bus number to 0 or to the last bus number + 1?
Linux now has the concept of PCI domains so each controller is a new domain and thus the first bus should be 0 in each domain. (at least that's the "normal" way we handle things). - k _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
