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path: root/hw/usb/dev-serial.c
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2012-11-08usb: split packet result into actual_length + statusHans de Goede
Since with the ehci and xhci controllers a single packet can be larger then maxpacketsize, it is possible for the result of a single packet to be both having transferred some data as well as the transfer to have an error. An example would be an input transfer from a bulk endpoint successfully receiving 1 or more maxpacketsize packets from the device, followed by a packet signalling halt. While already touching all the devices and controllers handle_packet / handle_data / handle_control code, also change the return type of these functions to void, solely storing the status in the packet. To make the code paths for regular versus async packet handling more uniform. This patch unfortunately is somewhat invasive, since makeing the qemu usb core deal with this requires changes everywhere. This patch only prepares the usb core for this, all the hcd / device changes are done in such a way that there are no functional changes. This patch has been tested with uhci and ehci hcds, together with usb-audio, usb-hid and usb-storage devices, as well as with usb-redir redirection with a wide variety of real devices. Note that there is usually no need to directly set packet->actual_length form devices handle_data callback, as that is done by usb_packet_copy() Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-10-22usb-serial: only expose device in guest when the chardev is openGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-10-22usb-serial: don't magically zap chardev on umplugGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-09-11Better name usb braille deviceSamuel Thibault
Windows users need to know that they have to use the Baum driver to make the qemu braille device work. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-06-19Allow machines to configure the QEMU_VERSION that's exposed via hardwareCrístian Viana
QEMU exposes its version to the guest's hardware and in some cases that is wrong (e.g. Windows prints messages about driver updates when you switch the QEMU version). There is a new field now on the struct QEmuMachine, hw_version, which may contain the version that the specific machine should report. If that field is set, then that machine will report that version to the guest. Signed-off-by: Crístian Viana <vianac@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-04-26usb: add serial number generatorGerd Hoffmann
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 7b074a22dab4bdda9864b933f1bc811a3db42845 Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-03-13usb: the big renameGerd Hoffmann
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: Gerd Hoffmann <kraxel@redhat.com>