* kraxel/usb.38: (28 commits)
xhci: handle USB_RET_NAK
xhci: remote wakeup support
xhci: kill port arg from xhci_setup_packet
xhci: stop on errors
xhci: add trb type name lookup support.
xhci: signal low- and fullspeed support
usb: add USBBusOps->wakeup_endpoint
usb: pass USBEndpoint to usb_wakeup
usb: maintain async packet list per endpoint
usb: Set USBEndpoint in usb_packet_setup().
usb: add USBEndpoint->{nr,pid}
usb: USBPacket: add status, rename owner -> ep
usb: fold usb_generic_handle_packet into usb_handle_packet
usb: kill handle_packet callback
usb-xhci: switch to usb_find_device()
usb-musb: switch to usb_find_device()
usb-ohci: switch to usb_find_device()
usb-ehci: switch to usb_find_device()
usb-uhci: switch to usb_find_device()
usb: handle dev == NULL in usb_handle_packet()
...
Replace device_init() with generalized type_init().
While at it, unify naming convention: type_init([$prefix_]register_types)
Also, type_init() is a function, so add preceding blank line where
necessary and don't put a semicolon after the closing brace.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Cc: Anthony Liguori <anthony@codemonkey.ws>
Cc: malc <av1474@comtv.ru>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
All drivers except usb-hub use usb_generic_handle_packet. The only
reason the usb hub has its own function is that it used to be called
with packets which are intended for downstream devices. With the new,
separate device lookup step this doesn't happen any more, so the need
for a different handle_packet callback is gone.
So we can kill the handle_packet callback and just call
usb_generic_handle_packet directly. The special hub handling in
usb_handle_packet() can go away for the same reason.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add usb_find_device(). This function will check whenever a device with
a specific address is connected to the specified port. Usually this
will just check state and address of the device hooked up to the port,
but in case of a hub it will ask the hub to check all hub ports for a
matching device.
This patch doesn't put the code into use yet, see the following patches
for details.
The master plan is to separate device lookup and packet processing.
Right now the usb code simply walks all devices, calls
usb_handle_packet() on each until one accepts the packet (by returning
something different that USB_RET_NODEV). I want to have a device lookup
first, then call usb_handle_packet() once, for the device which actually
processes the packet.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This was done in a mostly automated fashion. I did it in three steps and then
rebased it into a single step which avoids repeatedly touching every file in
the tree.
The first step was a sed-based addition of the parent type to the subclass
registration functions.
The second step was another sed-based removal of subclass registration functions
while also adding virtual functions from the base class into a class_init
function as appropriate.
Finally, a python script was used to convert the DeviceInfo structures and
qdev_register_subclass functions to TypeInfo structures, class_init functions,
and type_register_static calls.
We are almost fully converted to QOM after this commit.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Right now, DeviceInfo acts as the class for qdev. In order to switch to a
proper ObjectClass derivative, we need to ween all of the callers off of
interacting directly with the info pointer.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Start maintaining endpoint state at USBDevice level. Add USBEndpoint
struct and some helper functions to deal with it. For now it contains
the endpoint type only. Moved over some bits from usb-linux.c
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Commit 6daf194d got rid of them, but Hans and Gerd added some more
lately. Tracked down with this Coccinelle semantic patch:
@r@
expression fmt;
position p;
@@
error_report(fmt, ...)@p
@script:python@
fmt << r.fmt;
p << r.p;
@@
if "\\n" in str(fmt):
print "%s:%s:%s:%s" % (p[0].file, p[0].line, p[0].column, fmt)
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Commit f462141f18 introduced clean up code
when usb_qdev_init() fails. Unfortunately it calls .handle_destroy()
when .init() was never invoked or failed. This can lead to crashes when
.handle_destroy() tries to clean up things that were never initialized.
This patch is careful to undo only those steps that completed along the
usb_qdev_init() code path. It's not as pretty as the unified error
handling in f462141f18 but it's necessary.
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
qdev doesn't call the ->exit callback on ->init failures, so we have to
take care ourself that we cleanup property on errors.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Use qdev_init() instead of qdev_init_nofail(), usb device initialization
can fail, most common case being port and device speed mismatch. Handle
failures correctly and pass up NULL pointers then.
Also fixup usb_create_simple() callers (only one was buggy) to properly
check for NULL pointers before referncing the usb_create_simple() return
value.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This patch makes qemu assign a port when creating the device, not when
attaching it. For most usb devices this isn't a noticable difference
because they are in attached state all the time.
The change affects usb-host devices which live in detached state while
the real device is unplugged from the host. They have a fixed port
assigned all the time now instead of getting grabbing one on attach and
releasing it at detach, i.e. they stop floating around at the usb bus.
The change also allows to simplify usb-hub. It doesn't need the
handle_attach() callback any more to configure the downstream ports.
This can be done at device initialitation time now. The changed
initialization order (first grab upstream port, then register downstream
ports) also fixes some icky corner cases. For example it is not possible
any more to plug the hub into one of its own downstream ports.
The usb host adapters must care too. USBPort->dev being non-NULL
doesn't imply any more the device is in attached state. The host
adapters must additionally check the USBPort->dev->attached flag.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Note this fixes 2 things in one go, first of all the device_destroy bus
op should be a device_detach bus op, as pending async packets from the
device should be cancelled on detach not on destroy.
Secondly having this as a bus op won't work with companion controllers, since
then there will be 1 bus driven by the ehci controller and thus 1 set of bus
ops, but the device being detached may be downstream of a handed over port.
Making the detach of a downstream device a port op allows the ehci controller
to forward this to the companion controller port for handed over ports.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This is a preparation patch for adding support for USB companion controllers.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Cleanup / preparation patch for companion controller support. Note that
as a "side-effect" this patch also fixes the milkymist-softusb controller
not having a port_location set for its ports.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This causes an "Error: tried to detach unattached usb device " to be printed,
this can happen when deleting ie a usb host qdev, which did not
get attached (because a device matching the filter never got plugged in).
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This patch adds USBBusOps struct with (for now) only a single callback
which is called when a device is about to be destroyed. The USB Host
adapters are implementing this callback and use it to cancel any async
requests which might be in flight before the device actually goes away.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Avoid this warning from OpenBSD linker:
LINK i386-softmmu/qemu
../usb-bus.o(.text+0x27c): In function `usb_get_fw_dev_path':
/src/qemu/hw/usb-bus.c:294: warning: sprintf() is often misused,
please use snprintf()
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Yes, seriously. There is no migration support at all for usb devices.
They loose state, especially the device address, and stop responding
because of that. Oops.
Luckily there is so much broken usb hardware out there that the guest
usually just kicks the device hard (via port reset and
reinitialization), then continues without a hitch. So we got away with
that in a surprising high number of cases.
The arrival of remote wakeup (which enables autosuspend support) changes
that picture though. The usb devices also forget that it they are
supposed to wakeup, so they don't do that. The host also doesn't notice
the device stopped working in case it suspended the device and thus
expects it waking up instead of polling it. Result is that your mouse
is dead.
Lets start fixing that. Add a vmstate struct for USBDevice.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This patch rewrites the firmware path code to use the physical port
location tracking just added to the qemu usb core. It also fixes the
port numbering to start with "1" in the firmware path.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This allows to explictily set the physical port where you want to
plug the usb device. Example:
-device usb-tablet,bus=usb.0,port=2
With explicit port addressing qemu can and will not automagically add
USB Hubs. This means that:
(a) You can plug two devices of your choice into the two uhci
root ports.
(b) If you want plug in more that two devices you have to care
about adding a hub yourself.
Plugging a hub works this way:
-device usb-hub,bus=usb.0,port=1
Use this to add a device to the hub:
-device usb-tablet,bus=usb.0,port=1.1
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add a path string to USBPort. Add usb_port_location() function to set
the physical location of the usb port. Update all drivers implementing
usb ports to call it. Update the monitor commands to print it. Wind it
up in qdev.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Ports on root hub will have NULL here. This is needed to reconstruct
path from device to its root hub to build device path.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
After commit 702f3e0fb5, the params is
nerver NULL. It should check *params instead of params to determine
whether the params is empty.
Signed-off-by: TeLeMan <geleman@gmail.com>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Many usbdevice_init implementors assume params is non-NULL.
Signed-off-by: Jan Kiszka <jan.kiszka@web.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
error_report() terminates the message with a newline. Strip it it
from its arguments.
This fixes a few error messages lacking a newline:
net_handle_fd_param()'s "No file descriptor named %s found", and
tap_open()'s "vnet_hdr=1 requested, but no kernel support for
IFF_VNET_HDR available" (all three versions).
There's one place that passes arguments without newlines
intentionally: load_vmstate(). Fix it up.
If -usbdevice is used on a machine with no USB busses, usb_create
will fail and return NULL. Patch below handles this failure gracefully
rather than crashing when we try to init the device.
Signed-off-by: Paul Brook <paul@codesourcery.com>
Device names with whitespace require quoting in the shell and in the
monitor. Some of the offenders are also overly long. Some have a
more convenient alias, some don't.
The place for verbose device names is DeviceInfo member desc. The
name should be short & sweet.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Using the qdev name for the product description makes for inconvenient
qdev names.
Put the product description in new USBDeviceInfo member product_desc.
Make usb_qdev_init() use it. No user or guest visible change, since
the value is still the same.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
It's not a device name, it's the USB product description string.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Add a auto_attach field to USBDevice, which is enabled by default.
USB drivers can clear this field in case they do *not* want the device
being attached (i.e. plugged into a usb port) automatically after
successfull init().
Use cases (see next patches):
* attaching encrypted mass storage devices.
* -usbdevice host:...
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This patchs adds infrastructure to handle -usbdevice via qdev callbacks.
USBDeviceInfo gets a name field (for the -usbdevice driver name) and a
callback for -usbdevice parameter parsing.
The new usbdevice_create() function walks the qdev driver list and looks
for a usb driver with a matching name. When a parameter parsing
callback is present it is called, otherwise the device is created via
usb_create_simple().
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
