On 01/06/16 04:06, xiaoqiang zhao wrote:
>> 在 2016年6月1日，06:13，Mark Cave-Ayland <mark.cave-ayl...@ilande.co.uk> 写道：
>>
>>> On 27/05/16 11:06, Paolo Bonzini wrote:
>>>
>>> From: xiaoqiang zhao <zxq_yx_...@163.com>
>>>
>>> * Drop the old SysBus init function and use instance_init
>>> * Call qemu_chr_add_handlers in the realize callback
>>>
>>> Signed-off-by: xiaoqiang zhao <zxq_yx_...@163.com>
>>> Message-Id: <1464158344-12266-2-git-send-email-zxq_yx_...@163.com>
>>> Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
>>> ---
>>> hw/char/escc.c | 30 +++++++++++++++++++-----------
>>> 1 file changed, 19 insertions(+), 11 deletions(-)
>>>
>>> diff --git a/hw/char/escc.c b/hw/char/escc.c
>>> index 7bf09a0..8e6a7df 100644
>>> --- a/hw/char/escc.c
>>> +++ b/hw/char/escc.c
>>> @@ -983,9 +983,10 @@ void slavio_serial_ms_kbd_init(hwaddr base, qemu_irq
>>> irq,
>>> sysbus_mmio_map(s, 0, base);
>>> }
>>>
>>> -static int escc_init1(SysBusDevice *dev)
>>> +static void escc_init1(Object *obj)
>>> {
>>> - ESCCState *s = ESCC(dev);
>>> + ESCCState *s = ESCC(obj);
>>> + SysBusDevice *dev = SYS_BUS_DEVICE(obj);
>>> unsigned int i;
>>>
>>> s->chn[0].disabled = s->disabled;
>>> @@ -994,17 +995,26 @@ static int escc_init1(SysBusDevice *dev)
>>> sysbus_init_irq(dev, &s->chn[i].irq);
>>> s->chn[i].chn = 1 - i;
>>> s->chn[i].clock = s->frequency / 2;
>>> - if (s->chn[i].chr) {
>>> - qemu_chr_add_handlers(s->chn[i].chr, serial_can_receive,
>>> - serial_receive1, serial_event,
>>> &s->chn[i]);
>>> - }
>>> }
>>> s->chn[0].otherchn = &s->chn[1];
>>> s->chn[1].otherchn = &s->chn[0];
>>>
>>> - memory_region_init_io(&s->mmio, OBJECT(s), &escc_mem_ops, s, "escc",
>>> + memory_region_init_io(&s->mmio, obj, &escc_mem_ops, s, "escc",
>>> ESCC_SIZE << s->it_shift);
>>> sysbus_init_mmio(dev, &s->mmio);
>>> +}
>>> +
>>> +static void escc_realize(DeviceState *dev, Error **errp)
>>> +{
>>> + ESCCState *s = ESCC(dev);
>>> + unsigned int i;
>>> +
>>> + for (i = 0; i < 2; i++) {
>>> + if (s->chn[i].chr) {
>>> + qemu_chr_add_handlers(s->chn[i].chr, serial_can_receive,
>>> + serial_receive1, serial_event,
>>> &s->chn[i]);
>>> + }
>>> + }
>>>
>>> if (s->chn[0].type == mouse) {
>>> qemu_add_mouse_event_handler(sunmouse_event, &s->chn[0], 0,
>>> @@ -1014,8 +1024,6 @@ static int escc_init1(SysBusDevice *dev)
>>> s->chn[1].hs = qemu_input_handler_register((DeviceState
>>> *)(&s->chn[1]),
>>> &sunkbd_handler);
>>> }
>>> -
>>> - return 0;
>>> }
>>>
>>> static Property escc_properties[] = {
>>> @@ -1032,10 +1040,9 @@ static Property escc_properties[] = {
>>> static void escc_class_init(ObjectClass *klass, void *data)
>>> {
>>> DeviceClass *dc = DEVICE_CLASS(klass);
>>> - SysBusDeviceClass *k = SYS_BUS_DEVICE_CLASS(klass);
>>>
>>> - k->init = escc_init1;
>>> dc->reset = escc_reset;
>>> + dc->realize = escc_realize;
>>> dc->vmsd = &vmstate_escc;
>>> dc->props = escc_properties;
>>> set_bit(DEVICE_CATEGORY_INPUT, dc->categories);
>>> @@ -1045,6 +1052,7 @@ static const TypeInfo escc_info = {
>>> .name = TYPE_ESCC,
>>> .parent = TYPE_SYS_BUS_DEVICE,
>>> .instance_size = sizeof(ESCCState),
>>> + .instance_init = escc_init1,
>>> .class_init = escc_class_init,
>>> };
>>
>> Unfortunately this patch causes OpenBIOS to freeze on startup under
>> qemu-system-ppc (presumably as there is a problem accessing the serial
>> port). You can reproduce this by starting qemu-system-ppc with no
>> parameters against the commits below:
>>
>> Bad : e7c9136977cb99c6eb52c9139f7b8d8b5fa87db9
>> Good: b138e654a0525f009e7e7c96fc67d74baf3e011b
>>
>> Note that you'll currently need to use the above two hashes to reproduce
>> the issue against git master as another regression has just crept in.
>>
>>
>> ATB,
>>
>> Mark.
>>
>>
>
> Mark：
> Sorry for the inconvenience. This problem is due to the incorrect property
> value in the realize stage. I have fix this and the test is passed.
No problem.
> Paolo: Do i need to send a new version or just this one?
The original patch has already applied to git master, so please send
your fix as a separate patch.
ATB,
Mark.
