mirror of
https://github.com/qemu/qemu.git
synced 2024-12-06 02:03:38 +08:00
324b2298fe
Apart from targets.rst, which was written by hand, this is an automated conversion obtained with the following command: makeinfo --force -o - --docbook \ -D 'qemu_system_x86 QEMU_SYSTEM_X86_MACRO' \ -D 'qemu_system QEMU_SYSTEM_MACRO' \ $texi | pandoc -f docbook -t rst+smart | perl -e ' $/=undef; $_ = <>; s/^- − /- /gm; s/QEMU_SYSTEM_MACRO/|qemu_system|/g; s/QEMU_SYSTEM_X86_MACRO/|qemu_system_x86|/g; s/(?=::\n\n +\|qemu)/.. parsed-literal/g; s/:\n\n::$/::/gm; print' > $rst In addition, the following changes were made manually: - target-i386.rst and target-mips.rst: replace CPU model documentation with an include directive - monitor.rst: replace the command section with a comment - images.rst: add toctree - target-arm.rst: Replace use of :math: (which Sphinx complains about) with :sup:, and hide it behind |I2C| and |I2C| substitutions. Content that is not @included remains exclusive to qemu-doc.texi. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Tested-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 20200228153619.9906-20-peter.maydell@linaro.org Message-id: 20200226113034.6741-19-pbonzini@redhat.com [PMM: Fixed target-arm.rst use of :math:; remove out of date note about images.rst from commit message; fixed expansion of |qemu_system_x86|; use parsed-literal in invocation.rst when we want to use |qemu_system_x86|; fix incorrect subsection level for "OS requirements" in target-i386.rst; fix incorrect syntax for making links to other sections of the manual] Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
138 lines
4.2 KiB
ReStructuredText
138 lines
4.2 KiB
ReStructuredText
.. _pcsys_005fusb:
|
|
|
|
USB emulation
|
|
-------------
|
|
|
|
QEMU can emulate a PCI UHCI, OHCI, EHCI or XHCI USB controller. You can
|
|
plug virtual USB devices or real host USB devices (only works with
|
|
certain host operating systems). QEMU will automatically create and
|
|
connect virtual USB hubs as necessary to connect multiple USB devices.
|
|
|
|
.. _usb_005fdevices:
|
|
|
|
Connecting USB devices
|
|
~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
USB devices can be connected with the ``-device usb-...`` command line
|
|
option or the ``device_add`` monitor command. Available devices are:
|
|
|
|
``usb-mouse``
|
|
Virtual Mouse. This will override the PS/2 mouse emulation when
|
|
activated.
|
|
|
|
``usb-tablet``
|
|
Pointer device that uses absolute coordinates (like a touchscreen).
|
|
This means QEMU is able to report the mouse position without having
|
|
to grab the mouse. Also overrides the PS/2 mouse emulation when
|
|
activated.
|
|
|
|
``usb-storage,drive=drive_id``
|
|
Mass storage device backed by drive_id (see
|
|
:ref:`disk_005fimages`)
|
|
|
|
``usb-uas``
|
|
USB attached SCSI device, see
|
|
`usb-storage.txt <https://git.qemu.org/?p=qemu.git;a=blob_plain;f=docs/usb-storage.txt>`__
|
|
for details
|
|
|
|
``usb-bot``
|
|
Bulk-only transport storage device, see
|
|
`usb-storage.txt <https://git.qemu.org/?p=qemu.git;a=blob_plain;f=docs/usb-storage.txt>`__
|
|
for details here, too
|
|
|
|
``usb-mtp,rootdir=dir``
|
|
Media transfer protocol device, using dir as root of the file tree
|
|
that is presented to the guest.
|
|
|
|
``usb-host,hostbus=bus,hostaddr=addr``
|
|
Pass through the host device identified by bus and addr
|
|
|
|
``usb-host,vendorid=vendor,productid=product``
|
|
Pass through the host device identified by vendor and product ID
|
|
|
|
``usb-wacom-tablet``
|
|
Virtual Wacom PenPartner tablet. This device is similar to the
|
|
``tablet`` above but it can be used with the tslib library because in
|
|
addition to touch coordinates it reports touch pressure.
|
|
|
|
``usb-kbd``
|
|
Standard USB keyboard. Will override the PS/2 keyboard (if present).
|
|
|
|
``usb-serial,chardev=id``
|
|
Serial converter. This emulates an FTDI FT232BM chip connected to
|
|
host character device id.
|
|
|
|
``usb-braille,chardev=id``
|
|
Braille device. This will use BrlAPI to display the braille output on
|
|
a real or fake device referenced by id.
|
|
|
|
``usb-net[,netdev=id]``
|
|
Network adapter that supports CDC ethernet and RNDIS protocols. id
|
|
specifies a netdev defined with ``-netdev …,id=id``. For instance,
|
|
user-mode networking can be used with
|
|
|
|
.. parsed-literal::
|
|
|
|
|qemu_system| [...] -netdev user,id=net0 -device usb-net,netdev=net0
|
|
|
|
``usb-ccid``
|
|
Smartcard reader device
|
|
|
|
``usb-audio``
|
|
USB audio device
|
|
|
|
.. _host_005fusb_005fdevices:
|
|
|
|
Using host USB devices on a Linux host
|
|
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
WARNING: this is an experimental feature. QEMU will slow down when using
|
|
it. USB devices requiring real time streaming (i.e. USB Video Cameras)
|
|
are not supported yet.
|
|
|
|
1. If you use an early Linux 2.4 kernel, verify that no Linux driver is
|
|
actually using the USB device. A simple way to do that is simply to
|
|
disable the corresponding kernel module by renaming it from
|
|
``mydriver.o`` to ``mydriver.o.disabled``.
|
|
|
|
2. Verify that ``/proc/bus/usb`` is working (most Linux distributions
|
|
should enable it by default). You should see something like that:
|
|
|
|
::
|
|
|
|
ls /proc/bus/usb
|
|
001 devices drivers
|
|
|
|
3. Since only root can access to the USB devices directly, you can
|
|
either launch QEMU as root or change the permissions of the USB
|
|
devices you want to use. For testing, the following suffices:
|
|
|
|
::
|
|
|
|
chown -R myuid /proc/bus/usb
|
|
|
|
4. Launch QEMU and do in the monitor:
|
|
|
|
::
|
|
|
|
info usbhost
|
|
Device 1.2, speed 480 Mb/s
|
|
Class 00: USB device 1234:5678, USB DISK
|
|
|
|
You should see the list of the devices you can use (Never try to use
|
|
hubs, it won't work).
|
|
|
|
5. Add the device in QEMU by using:
|
|
|
|
::
|
|
|
|
device_add usb-host,vendorid=0x1234,productid=0x5678
|
|
|
|
Normally the guest OS should report that a new USB device is plugged.
|
|
You can use the option ``-device usb-host,...`` to do the same.
|
|
|
|
6. Now you can try to use the host USB device in QEMU.
|
|
|
|
When relaunching QEMU, you may have to unplug and plug again the USB
|
|
device to make it work again (this is a bug).
|