On Aug 25, 2015, at 3:43 AM, Markus Armbruster wrote:
> Programmingkid <programmingk...@gmail.com> writes:
>
>> On Aug 24, 2015, at 12:38 PM, Markus Armbruster wrote:
>>
>>> Programmingkid <programmingk...@gmail.com> writes:
>>>
>>>> On Aug 24, 2015, at 5:45 AM, Markus Armbruster wrote:
>>>>
>>>>> Copying the USB maintainer.
>>>>>
>>>>> Programmingkid <programmingk...@gmail.com> writes:
>>>>>
>>>>>> On Aug 8, 2015, at 8:48 AM, Programmingkid wrote:
>>>>>>
>>>>>>>
>>>>>>> On Aug 8, 2015, at 2:04 AM, Markus Armbruster wrote:
>>>>>>>>>
>>>>>>>>> USB devices can be connected with the @option{-usbdevice}
>>>>>>>>> commandline option
>>>>>>>>> -or the @code{usb_add} monitor command. Available devices are:
>>>>>>>>> +or the @code{usb_add} monitor command. Note: some devices may
>>>>>>>>> only work if
>>>>>>>>> +added like this: -usb -device <usb device>. Available devices are:
>>>>>>>>
>>>>>>>> I'm afraid "may only work" is a bit misleading. All of them work with
>>>>>>>> -device. Old ones are also supported by -usbdevice for backward
>>>>>>>> compatibility. The whole section should be rewritten to point to
>>>>>>>> -device instead of legacy -usbdevice, but that's no reason to hold up
>>>>>>>> your patch.
>>>>>>>
>>>>>>> I did not know -usbdevice was considered legacy. If that is the
>>>>>>> case, then it should probably
>>>>>>> be removed from the documentation in favor for -usb -device
>>>>>>> <device name>.
>>>>>>
>>>>>> Right now using "-usb -device mouse" doesn't work.
>>>>>
>>>>> You need to say -device usb-mouse. See docs/qdev-device-use.txt. Does
>>>>> it work for you when you do that?
>>>>
>>>> It does. Thank you for this information.
>>>
>>> My pleasure.
>>>
>>>>>> Neither does
>>>>>> "-usbdevice usb-audio".
>>>>>
>>>>> Yes. Legacy -usbdevice only supports the devices that predate -device.
>>>>>
>>>>>> I think we can all agree that consistency among all the USB devices is
>>>>>> a good thing.
>>>>>> Should all USB devices be added like this: -usb -device <device name> ?
>>>>>
>>>>> "Should" is perhaps a bit strong. While -device is the recommended way
>>>>> to add a USB device, -usbdevice is still a supported (if legacy) way to
>>>>> do it.
>>>>>
>>>>> Of course, "supported, but legacy" interfaces such as -usbdevice may
>>>>> become deprecated, and then you should really move to newer interfaces,
>>>>> because deprecated ones may go away. Doesn't look terribly probable to
>>>>> me for -usbdevice, though.
>>>>>
>>>>>> This is an experimental patch of not how QEMU currently works, but how
>>>>>> I think it should work.
>>>>>>
>>>>>> This documentation adds an "usb_remove" monitor command. This isn't
>>>>>> available right now,
>>>>>> but a patch could be made to change this. Any suggestions or additions
>>>>>> are welcomed.
>>>>>
>>>>> Why do you think we need usb_remove in addition to device_del?
>>>>
>>>> Ok. usb_remove isn't needed. Why is it that "device_add usb-kbd" works, but
>>>> "device_del usb-kbd" doesn't work? I am given this error message:
>>>> "Device 'usb-kbd' not found".
>>>
>>> device_del's argument isn't a driver, it's a device ID. Try this:
>>>
>>> (qemu) device_add usb-mouse,id=mouse0
>>> (qemu) info usb
>>> Device 0.0, Port 1, Speed 12 Mb/s, Product QEMU USB Mouse
>>> (qemu) device_del mouse0
>>> (qemu) info usb
>>> (qemu)
>>
>> The problem is with "info usb". It doesn't print the id you gave it. I
>> will make a patch that
>> will print the id's.
>
> Yes, "info usb" doesn't show the qdev ID. Neither does "info pci".
> "info qom" and "info qtree" do.
It sounds like these info's could use some improving...
