Re: [Qemu-devel] [PATCH v2 1/1] char: cadence_uart: Convert to realize()

[Alistair Francis <alistair.francis@xilinx.com>]

On Thu, Feb 26, 2015 at 5:57 PM, Andreas Färber <afaerber@suse.de> wrote:
> Am 26.02.2015 um 06:07 schrieb Alistair Francis:
>> Use the DeviceClass realize() and init() instead of
>> the deprecated SysBusDevice init().
>>
>> Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
>> ---
>> V2:
>>  - Simplify commit message
>>  - Fix function typo
>>
>>  hw/char/cadence_uart.c | 29 ++++++++++++++++-------------
>>  1 file changed, 16 insertions(+), 13 deletions(-)
>>
>> diff --git a/hw/char/cadence_uart.c b/hw/char/cadence_uart.c
>> index 7044b35..b6ccd72 100644
>> --- a/hw/char/cadence_uart.c
>> +++ b/hw/char/cadence_uart.c
>> @@ -476,27 +476,30 @@ static void cadence_uart_reset(DeviceState *dev)
>>      uart_update_status(s);
>>  }
>>
>> -static int cadence_uart_init(SysBusDevice *dev)
>> +static void cadence_uart_realize(DeviceState *dev, Error **errp)
>>  {
>>      UartState *s = CADENCE_UART(dev);
>>
>> -    memory_region_init_io(&s->iomem, OBJECT(s), &uart_ops, s, "uart", 0x1000);
>> -    sysbus_init_mmio(dev, &s->iomem);
>> -    sysbus_init_irq(dev, &s->irq);
>> -
>> -    s->fifo_trigger_handle = timer_new_ns(QEMU_CLOCK_VIRTUAL,
>> -            (QEMUTimerCB *)fifo_trigger_update, s);
>> -
>> -    s->char_tx_time = (get_ticks_per_sec() / 9600) * 10;
>> -
>>      s->chr = qemu_char_get_next_serial();
>>
>>      if (s->chr) {
>>          qemu_chr_add_handlers(s->chr, uart_can_receive, uart_receive,
>>                                uart_event, s);
>>      }
>> +}
>>
>> -    return 0;
>> +static void cadence_uart_init(Object *obj)
>> +{
>> +    UartState *s = CADENCE_UART(obj);
>> +
>> +    memory_region_init_io(&s->iomem, obj, &uart_ops, s, "uart", 0x1000);
>> +    sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->iomem);
>> +    sysbus_init_irq(SYS_BUS_DEVICE(obj), &s->irq);
>> +
>> +    s->fifo_trigger_handle = timer_new_ns(QEMU_CLOCK_VIRTUAL,
>> +            (QEMUTimerCB *)fifo_trigger_update, s);
>
> Is the timer created in a non-running state? Otherwise it should
> probably remain in realize.

Not that I'm aware of, I will move it to realize.

>
> Also, why is the cast necessary?

It's not really, it was just already in the code, I will remove it.

>
> Otherwise looks good. Via qom-next tree or ARM tree?

qom-next would be best as Peter is away for the next week.

Thanks,

Alistair

>
> Regards,
> Andreas
>
>> +
>> +    s->char_tx_time = (get_ticks_per_sec() / 9600) * 10;
>>  }
>>
>>  static int cadence_uart_post_load(void *opaque, int version_id)
>> @@ -528,9 +531,8 @@ static const VMStateDescription vmstate_cadence_uart = {
>>  static void cadence_uart_class_init(ObjectClass *klass, void *data)
>>  {
>>      DeviceClass *dc = DEVICE_CLASS(klass);
>> -    SysBusDeviceClass *sdc = SYS_BUS_DEVICE_CLASS(klass);
>>
>> -    sdc->init = cadence_uart_init;
>> +    dc->realize = cadence_uart_realize;
>>      dc->vmsd = &vmstate_cadence_uart;
>>      dc->reset = cadence_uart_reset;
>>  }
>> @@ -539,6 +541,7 @@ static const TypeInfo cadence_uart_info = {
>>      .name          = TYPE_CADENCE_UART,
>>      .parent        = TYPE_SYS_BUS_DEVICE,
>>      .instance_size = sizeof(UartState),
>> +    .instance_init = cadence_uart_init,
>>      .class_init    = cadence_uart_class_init,
>>  };
>>
>>
>
>
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