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authorGerd Hoffmann <kraxel@redhat.com>2013-04-02 12:15:24 +0200
committerGerd Hoffmann <kraxel@redhat.com>2013-04-03 11:39:43 +0200
commitf9618633a86cc74b33f178f05154d4edbc08c0fc (patch)
tree7497c000a95bc0278271cf4f05f3313f01c66775 /docs
parenta309ee6e0a256f690760abfba44fceaa52a7c2f3 (diff)
usb: update docs for bus name change
At some point the default usb bus name changed from 'usb.0' to 'usb-bus.0' (probably as part of the qom conversion). Update the usb documentation accordingly. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Diffstat (limited to 'docs')
-rw-r--r--docs/usb2.txt20
1 files changed, 10 insertions, 10 deletions
diff --git a/docs/usb2.txt b/docs/usb2.txt
index 43dacdec28..c7a445afcd 100644
--- a/docs/usb2.txt
+++ b/docs/usb2.txt
@@ -11,7 +11,7 @@ one USB 2.0 bus driven by the EHCI controller. Devices must be
attached to the correct controller manually.
The '-usb' switch will make qemu create the UHCI controller as part of
-the PIIX3 chipset. The USB 1.1 bus will carry the name "usb.0".
+the PIIX3 chipset. The USB 1.1 bus will carry the name "usb-bus.0".
You can use the standard -device switch to add a EHCI controller to
your virtual machine. It is strongly recommended to specify an ID for
@@ -27,7 +27,7 @@ a complete example:
-drive if=none,id=usbstick,file=/path/to/image \
-usb \
-device usb-ehci,id=ehci \
- -device usb-tablet,bus=usb.0 \
+ -device usb-tablet,bus=usb-bus.0 \
-device usb-storage,bus=ehci.0,drive=usbstick
This attaches a usb tablet to the UHCI adapter and a usb mass storage
@@ -88,22 +88,22 @@ ports (1-4), the emulated (1.1) USB hub has eight ports.
Plugging a tablet into UHCI port 1 works like this:
- -device usb-tablet,bus=usb.0,port=1
+ -device usb-tablet,bus=usb-bus.0,port=1
Plugging a hub into UHCI port 2 works like this:
- -device usb-hub,bus=usb.0,port=2
+ -device usb-hub,bus=usb-bus.0,port=2
Plugging a virtual usb stick into port 4 of the hub just plugged works
this way:
- -device usb-storage,bus=usb.0,port=2.4,drive=...
+ -device usb-storage,bus=usb-bus.0,port=2.4,drive=...
You can do basically the same in the monitor using the device_add
command. If you want to unplug devices too you should specify some
unique id which you can use to refer to the device ...
- (qemu) device_add usb-tablet,bus=usb.0,port=1,id=my-tablet
+ (qemu) device_add usb-tablet,bus=usb-bus.0,port=1,id=my-tablet
(qemu) device_del my-tablet
... when unplugging it with device_del.
@@ -148,10 +148,10 @@ using for testing is bus 1 + port 1 for 2.0 devices and bus 3 + port 1
for 1.1 devices. Passing through any device plugged into that port
and also assign them to the correct bus can be done this way:
- qemu -M pc ${otheroptions} \
- -usb \
- -device usb-ehci,id=ehci \
- -device usb-host,bus=usb.0,hostbus=3,hostport=1 \
+ qemu -M pc ${otheroptions} \
+ -usb \
+ -device usb-ehci,id=ehci \
+ -device usb-host,bus=usb-bus.0,hostbus=3,hostport=1 \
-device usb-host,bus=ehci.0,hostbus=1,hostport=1
enjoy,