On Thu, Apr 28, 2011 at 06:06:50PM -0500, Xianghua Xiao wrote: > I have a FPGA-PCIe device and a FPGA-PCI device that are empty at > kernel boot time, they're only loaded after kernel is up. After I load > FPGA images, "lspci" can not show the device, "echo 1 > > /sys/bus/pci/rescan" also does nothing about it. With a reboot I can > see the devices are allocated correctly though, but I want to avoid > the reboot. > > I checked at fakephp(which is to be deprecated) and hotplug/rescan, > none of that worked for this scenario. > > Can 'rescan' handle cases like this? or, is there a way that I tell > the kernel to reserve a few BARs somehow in the PCI topology at > bootime so I can "insert" the FPGAs later? Your firmware has to do this, see the PCI hotplug specification for details as to the proper procedure for this. Best of luck, greg k-h -- 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
