Il 26/09/2014 14:26, Alexander Graf ha scritto: > > Are you sure? Imagine one sysbus device includes another. We only want > to look at the region the lowest sysbus device exposes, no?
IIUC this function is used to build the device tree. Say you have 2 consecutive memory regions and the device tree requires separate "reg" entries for them. But because they are consecutive (or perhaps because you have a PCI version of the same device that sticks them in a single BAR) you use a single MMIO area at the sysbus level. In that case, you will use platform_bus_get_mmio_addr on the two inner regions, not the outer one. BTW, I think you will never have one sysbus device including another. The contained device would be busless (similar to the "naked" 8250 device in hw/char/serial.c, except perhaps QOMified). Paolo
