Re: QOM

[abhijeet inamdar <abhijeetinamdar3005@gmail.com>]

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As we have almost 80 irq lines and 40-45 NVIC_irq's.

Where can I define them?

BR.
Abhijeet.

On Tue, 21 Dec, 2021, 13:18 abhijeet inamdar, <abhijeetinamdar3005@gmail.com>
wrote:

> Oh,
>
> In that case I have to define my irq set for a machine to handle the
> exception and interrupts.
>
> BR.
> Abhijeet.
>
> On Tue, 21 Dec, 2021, 12:59 Philippe Mathieu-Daudé, <philmd@redhat.com>
> wrote:
>
>> Hi Abhijeet,
>>
>> On 12/21/21 12:27, abhijeet inamdar wrote:
>> > Hi,
>> >
>> > 1)What does QOM stand for?
>>
>> QOM: "QEMU Object Model"
>>
>> See https://qemu-project.gitlab.io/qemu/devel/qom.html
>>
>> > 2)Can anyone tell what this error means?
>> >
>> > (qemu) Unexpected error in object_property_find() at
>> > /home/ocp/vcpu-playground/vcpu_on_qemu/qemu-4.2.0/qom/object.c:1177:
>> > qemu-system-arm: Property '.sysbus-irq[0]' not found
>> > Aborted (core dumped).
>>
>> I suppose you are trying to connect a device gpio/irq output line
>> to another device input, likely using sysbus_connect_irq().
>>
>> The API is "connect the N-th output line from the SysBus device
>> to this qemu_irq handler", where qemu_irq is the input line.
>>
>> Apparently your SysBus device doesn't have any output line
>> registered. These are registered using sysbus_init_irq().
>> The first call register the first output IRQ, and so on.
>>
>> Some objects have their QOM interface documented, for
>> example to use the ARM GIC see:
>>
>> https://gitlab.com/qemu-project/qemu/-/blob/master/include/hw/intc/arm_gic.h#L22
>>
>> Hope that helps.
>>
>> Regards,
>>
>> Phil.
>>
>>

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