| Message ID | 20220911181840.8933-6-arwed.meyer@gmx.de |
|---|---|
| State | New |
| Headers | show |
| Series | Make serial msmouse work | expand |
On Sun, Sep 11, 2022 at 10:46 PM Arwed Meyer <arwed.meyer@gmx.de> wrote: > Unaligned i/o access on serial UART works on real PCs. > This is used for example by FreeDOS CTMouse driver. Without this it > can't reset and detect serial mice. > > Resolves: https://gitlab.com/qemu-project/qemu/-/issues/77 > Signed-off-by: Arwed Meyer <arwed.meyer@gmx.de> > Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Michael, can you r-b too? > --- > hw/char/serial.c | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git a/hw/char/serial.c b/hw/char/serial.c > index 7061aacbce..41b5e61977 100644 > --- a/hw/char/serial.c > +++ b/hw/char/serial.c > @@ -961,6 +961,9 @@ void serial_set_frequency(SerialState *s, uint32_t > frequency) > const MemoryRegionOps serial_io_ops = { > .read = serial_ioport_read, > .write = serial_ioport_write, > + .valid = { > + .unaligned = 1, > + }, > .impl = { > .min_access_size = 1, > .max_access_size = 1, > -- > 2.34.1 > > >
diff --git a/hw/char/serial.c b/hw/char/serial.c index 7061aacbce..41b5e61977 100644 --- a/hw/char/serial.c +++ b/hw/char/serial.c @@ -961,6 +961,9 @@ void serial_set_frequency(SerialState *s, uint32_t frequency) const MemoryRegionOps serial_io_ops = { .read = serial_ioport_read, .write = serial_ioport_write, + .valid = { + .unaligned = 1, + }, .impl = { .min_access_size = 1, .max_access_size = 1,
Unaligned i/o access on serial UART works on real PCs. This is used for example by FreeDOS CTMouse driver. Without this it can't reset and detect serial mice. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/77 Signed-off-by: Arwed Meyer <arwed.meyer@gmx.de> --- hw/char/serial.c | 3 +++ 1 file changed, 3 insertions(+) -- 2.34.1