Am 13.12.2011 22:53, schrieb Anthony Liguori: > ISADevice could very easily become an Interface as it has no > state today.
Not in upstream, but Hervé and me had been working on that for PReP, as you may recall. There seemed to be consensus that some ISA devices can choose which I/O ports and IRQs to listen on (EEPROM state). Further, since we disallow hotplug on ISA, enabled/disabled became another ISADevice-internal state (ugly IMO and that's where we stalled). The latter might be avoided by using pc87312 Super I/O has-a UART and by not pretending they are ISADevices on a global ISABus but something custom, private to Super I/O (which has enabled/disabled state in its registers), that happen to look-and-feel just like ISA devices? Andreas
