Markus Armbruster <arm...@redhat.com> wrote: >>> I have to send a 2x10 bytes package, and it does not fit the the 16 >>> bytes buffer.... Any other suggestion about how to do it? >> >> Nope, I am not a 16550A guru at all. No sure if your change will break >> anything else or no, that is why I asked. > > The 16550 FIFOs are 16 bytes. The chips with larger FIFOs have > different model numbers, e.g. 16650 with 32 byte FIFOs. > > I can't see how the FIFO length limits your packet size. Could you > explain?
Ah, I found it. Please look at hw/baum.c to see how to handle bigger packets. You can't write 10 + 10 bytes into 16 bytes in one go, you need to wait for the guest to consume some bits before you sent something more. see how baum_accept_input() handle qemu_chr_can_read() output. Something like that should fix your problems. Later, Juan.
