Re: [PATCH v3 15/33] serial-mm: add endianness property

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

On 10/23/19 7:31 PM, Marc-André Lureau wrote:
> Add a qdev property for endianness, so memory region setup can be done
> in realize.
> 
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>   hw/char/serial.c         | 2 ++
>   include/hw/char/serial.h | 1 +
>   2 files changed, 3 insertions(+)
> 
> diff --git a/hw/char/serial.c b/hw/char/serial.c
> index c28cfc94fd..2f7667c30c 100644
> --- a/hw/char/serial.c
> +++ b/hw/char/serial.c
> @@ -1081,6 +1081,7 @@ SerialMM *serial_mm_init(MemoryRegion *address_space,
>       qdev_prop_set_uint32(DEVICE(s), "baudbase", baudbase);
>       qdev_prop_set_chr(DEVICE(s), "chardev", chr);
>       qdev_prop_set_int32(DEVICE(s), "instance-id", base);
> +    qdev_prop_set_uint8(DEVICE(s), "endianness", end);
>   
>       qdev_init_nofail(DEVICE(s));
>       qdev_init_nofail(DEVICE(self));
> @@ -1102,6 +1103,7 @@ static void serial_mm_instance_init(Object *o)
>   
>   static Property serial_mm_properties[] = {
>       DEFINE_PROP_UINT8("regshift", SerialMM, regshift, 0),
> +    DEFINE_PROP_UINT8("endianness", SerialMM, endianness, DEVICE_NATIVE_ENDIAN),

The endianess is related to how the chipset is wired, but is not an 
intrinsic part of it.
Previously, serial_mm_init() was taking care of doing the correct wiring.
Now it seems the endianess is a property from the hardware.

Anyway:
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

>       DEFINE_PROP_END_OF_LIST(),
>   };
>   
> diff --git a/include/hw/char/serial.h b/include/hw/char/serial.h
> index 759c85976d..2d0802a909 100644
> --- a/include/hw/char/serial.h
> +++ b/include/hw/char/serial.h
> @@ -86,6 +86,7 @@ typedef struct SerialMM {
>       SerialState serial;
>   
>       uint8_t regshift;
> +    uint8_t endianness;
>   } SerialMM;
>   
>   extern const VMStateDescription vmstate_serial;
>