This patch adds a function which creates unique serial numbers for usb
devices and puts it into use.  Windows guests tend to become unhappy if
they find two identical usb devices in the system.  Effects range from
non-functional devices (with yellow exclamation mark in device manager)
to BSODs.  Handing out unique serial numbers to devices fixes this.

With this patch applied almost all emulated devices get a generated,
unique serial number.  There are two exceptions:

 * usb-storage devices will prefer a user-specified serial number
   and will only get a generated number in case the serial property
   is unset.
 * usb-hid devices keep the fixed serial number "42" as it is used
   to signal "remote wakeup actually works".
   See commit 7b074a22Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Add endpoint descriptor substruct to USBDescriptor,
use it in the descriptor generator code.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Add interface descriptor substruct to USBDescriptor,
use it in the descriptor generator code.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Add config descriptor substruct to USBDescriptor,
use it in the descriptor generator code.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Add device qualifier substruct to USBDescriptor,
use it in the descriptor generator code.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

This patch adds a new type for the binary representation of usb
descriptors.  It is put into use for the descriptor generator code
where the struct replaces the hard-coded offsets.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Reorganize usb source files.  Create a new hw/usb/ directory and move
all usb source code to that place.  Also make filenames a bit more
descriptive.  Host adapters are prefixed with "hch-" now, usb device
emulations are prefixed with "dev-".  Fixup paths Makefile and include
paths to make it compile.  No code changes.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Add support for audio endpoints which have two more fields in the
descriptor.  Also add support for extra class specific endpoint
descriptors.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Switch the smard card emulation to use the USBDesc*
structs for the usb descriptors.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

This allows using the generic usb_generic_handle_packet function from
device code which does ASYNC control requests (such as the linux host
pass through code).
Signed-off-by: NHans de Goede <hdegoede@redhat.com>

This is used for some devices that have multiple interfaces that form a logic
device. An example is Video Class, which has a Control interface and a
Streaming interface. There can be additional interfaces on the same (physical)
devices (e.g. a microphone), and Interface Association Descriptor handles this
case.
Signed-off-by: NBrad Hards <bradh@frogmouth.net>
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Add support for device_qualifier and other_speed_config descriptors.
These are used to query the "other speed" configuration of usb 2.0
devices, i.e. in high-speed mode they return the full-speed
configuration and visa versa.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

Add usb_desc_attach() which sets up the device according to the speed
the usb port is able to handle.  This function can be hooked into the
handle_attach callback.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

This patch adds fields to the USBDevice struct for the current
speed (hard-wired to full speed for now) and current device
configuration.  Also a init function is added which inializes
these fields.  This allows USB_REQ_{GET,SET}_CONFIGURATION
handling to be moved to common code.

For most drivers the conversion is trivial ad they support a single
configuration only anyway.  One exception is bluetooth where some
device-specific setup code runs after get/set configuration.  The
other is usb-net which actually has two configurations so the
the code to check for the active configuration has been adapted.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

This patch allows to set usb descriptor strings per device instance.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>

This patch adds hw/usb-desc.[ch] files.  They carry data structures
for various usb descriptors and helper functions to generate usb
packets from the structures.

The intention is to have a internal representation of the device
desription which is more usable than the current char array blobs,
so we can have common code handle common usb device emulation using
the device description.

The usage of this infrastructure is optional for usb drivers as there
are cases such as pass-through where it probably isn't very useful.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>