By default, QEMU will allow devices to be plugged into a bus up to the bus class's device count limit. If the user creates a device on the command line or via the monitor and doesn't explicitly specify the bus to plug it in, QEMU will plug it into the first non-full bus that it finds. This is fine in most cases, but some machines have multiple buses of a given type, some of which are dedicated to on-board devices and some of which have an externally exposed connector for user-pluggable devices. One example is I2C buses. Provide a new function qbus_mark_full() so that a machine model can mark this kind of "internal only" bus as 'full' after it has created all the devices that should be plugged into that bus. The "find a non-full bus" algorithm will then skip the internal-only bus when looking for a place to plug in user-created devices. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210903151435.22379-2-peter.maydell@linaro.org |
||
---|---|---|
.. | ||
arch_init.c | ||
balloon.c | ||
bootdevice.c | ||
cpu-throttle.c | ||
cpu-timers.c | ||
cpus.c | ||
datadir.c | ||
device_tree.c | ||
dma-helpers.c | ||
globals.c | ||
icount.c | ||
ioport.c | ||
main.c | ||
memory.c | ||
memory_mapping.c | ||
meson.build | ||
physmem.c | ||
qdev-monitor.c | ||
qemu-seccomp.c | ||
qtest.c | ||
rtc.c | ||
runstate-action.c | ||
runstate.c | ||
timers-state.h | ||
tpm.c | ||
trace-events | ||
trace.h | ||
vl.c |