Hello, I would like to test non-default payload sizes for my PCI Express setup under Linux. The root complex (PowerPC AMCC460EX in my case) support a maximum payload of 512 but defaults to 128 bytes. The devices I have (Intel e1000e and a custom FPGA end point) support up to 256 bytes. I have used setpci to first set the capability "device control" register of the root complex bridge to become 256, then that of the device. lspci -vvnn now reflect this in more verbose manner, confirming the devices are using 256 bytes payload. Should this be all there is to it, i.e. can I assume this is run-time settable on a device? Regards, -- Leon -- 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
