summaryrefslogtreecommitdiff
path: root/usb-linux.c
AgeCommit message (Collapse)Author
2011-09-07usb-host: tag as unmigratableGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-09-07usb-host: parse port in /proc/bus/usb/devices scanGerd Hoffmann
Unfortunaly this is limited to root ports. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-09-07usb-host: constify portGerd Hoffmann
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-09-07usb-host: endpoint table fixupGerd Hoffmann
USB Devices can have up to 15 IN and 15 OUT endpoints, not 15 endpoints total. Move from one array to two arrays (one IN, one OUT) to maintain the endpoint state.
2011-09-07usb-host: claim portGerd Hoffmann
When configured to pass through a specific host port (using hostbus and hostport properties), try to claim the port if supported by the kernel. That will avoid any kernel drivers binding to devices plugged into that port. It will not stop any userspace apps (such as usb_modeswitch) access the device via usbfs though. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-09-07usb-host: fix configuration tracking.Gerd Hoffmann
It is perfectly fine to leave the usb device in unconfigured state (USBHostDevice->configuration == 0). Just do that and wait for the guest to explicitly set a configuration. This is closer to what real hardware does and it also simplifies the device initialization. There is no need to figure how the device is configured on the host. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-09-07usb-host: limit open retriesGerd Hoffmann
Limit the number of times qemu tries to open host devices to three. Reset error counter when the device goes away, after un-plugging and re-plugging the device qemu will try again three times. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-09-07usb-host: fix halted endpointsGerd Hoffmann
Two fixes for the price of one ;) First, reinitialize the endpoint table after device reset. This is needed anyway as the reset might have switched interfaces. It also clears the endpoint halted state. Second the CLEAR_HALT ioctl wants a unsigned int passed in as argument, not uint8_t. This gets my usb sd card reader (sandisk micromate) going. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-09-07usb-host: reapurb error report fixGerd Hoffmann
Don't report errors on devices which are in disconnected and closing state.
2011-09-07usb-host: start tracing supportGerd Hoffmann
Add a bunch of trace points to usb-linux.c Drop a bunch of DPRINTK's in favor of the trace points. Also cleanup error reporting a bit while being at it. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-08-20Use glib memory allocation and free functionsAnthony Liguori
qemu_malloc/qemu_free no longer exist after this commit. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-08-04usb-host: iovec supportGerd Hoffmann
Add full support for iovecs to usb-host. The code can split large transfers into smaller ones already, we are using this to also split requests at iovec borders. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-08-04usb: use iovecs in USBPacketGerd Hoffmann
Zap data pointer from USBPacket, add a QEMUIOVector instead. Add a bunch of helper functions to manage USBPacket data. Switch over users to the new interface. Note that USBPacket->len was used for two purposes: First to pass in the buffer size and second to return the number of transfered bytes or the status code on async transfers. There is a new result variable for the latter. A new status code was added to catch uninitialized result. Nobody creates iovecs with more than one element (yet). Some users are (temporarely) limited to iovecs with a single element to keep the patch size as small as possible. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-07-23notifier: Pass data argument to callbackJan Kiszka
This allows to pass additional information to the notifier callback which is useful if sender and receiver do not share any other distinct data structure. Will be used first for the clock reset notifier. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-06-23usb-linux: allow "compatible" high speed devices to connect at fullspeedHans de Goede
Some usb2 highspeed devices, like usb-msd devices, work fine when redirected to a usb1 virtual controller. Allow this to avoid the new speedhecks causing regressions for users who do not enable the new experimental ehci code. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-06-23usb: Add a speedmask to devicesHans de Goede
This is used to indicate at which speed[s] the device can operate, so that this can be checked to match the ports capabilities when it gets attached to a bus. Note that currently all usb1 emulated device claim to be fullspeed, this seems to not cause any problems, but still seems wrong, because with real hardware keyboards, mice and tablets usually are lo-speed, so reporting these as fullspeed devices seems wrong. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-06-23usb: Proper error propagation for usb_device_attach errorsHans de Goede
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-06-23usb-linux: track inflight iso urb countGerd Hoffmann
Track the number of iso urbs which are currently in flight. Log a message in case the count goes down to zero. Also warn in case many urbs are returned at the same time. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-06-23usb-linux: make iso urb count contigurableGerd Hoffmann
Add a qdev property for the number of iso urbs which usb-linux keeps in flight, so it can be configured at runtime. Make it default to four (old hardcoded value used to be three). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-06-23usb-linux: add get_endp()Gerd Hoffmann
Add a helper function to get the endpoint data structure and put it into use. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-06-14usb-linux: Enlarge buffer for descriptors to 8192 bytesHans de Goede
1024 bytes is way to small, one hd UVC webcam I have over here has so many resolutions its descriptors take op close to 4k. Hopefully 8k will be enough for all devices. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-06-14usb-linux: only cleanup in host_close when host_open was successful.Gerd Hoffmann
2011-06-14usb-linux: Don't try to open the same device twiceHans de Goede
If a user wants to redirect 2 identical usb sticks, in theory this is possible by doing: usb_add host:1234:5678 usb_add host:1234:5678 But this will lead to us trying to open the first stick twice, since we don't break the loop after having found a match in our filter list, so the next' filter list entry will result in us trying to open the same device again. Fix this by adding the missing break. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-06-14usb-linux: Ensure devep != 0Hans de Goede
So that we don't index endp_table with a negative index. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-06-14usb-linux: Don't do perror when errno is not setHans de Goede
Note that "op" also is not set, so before this change these error paths would feed NULL to perror. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-06-14usb-linux: Teach about super speedHans de Goede
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-06-14usb-linux: Get speed from sysfs rather then from the connectinfo ioctlHans de Goede
The connectinfo ioctl only differentiates between lo speed devices, and all other speeds, where as we would like to know the real speed. The real speed is available in sysfs so use that when available. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-06-14usb-linux: catch ENODEV in more places.Gerd Hoffmann
Factor out disconnect code (called when a device disappears) to a separate function. Add a check for ENODEV errno to a few more places to make sure we notice disconnects. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-06-08Fix compilation warning due to missing header for sigaction (followup)Alexandre Raymond
This patch removes all references to signal.h when qemu-common.h is included as they become redundant. Signed-off-by: Alexandre Raymond <cerbere@gmail.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-05-26usb: move cancel callback to USBDeviceInfoGerd Hoffmann
Remove the cancel callback from the USBPacket struct, move it over to USBDeviceInfo. Zap usb_defer_packet() which is obsolete now. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-05-26usb-linux: fix max_packet_size for highspeed.Gerd Hoffmann
Calculate the max packet size correctly. Only bits 0..11 specify the size, bits 11+12 specify the number of (highspeed) microframes the endpoint wants to use. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-05-26usb-linux: split large xfersGerd Hoffmann
Add support for splitting large transfers into multiple smaller ones. This is needed for the upcoming EHCI emulation which allows guests to submit requests up to 20k in size. The linux kernel allows 16k max size though. Based on a patch from David Ahern, see http://www.mail-archive.com/qemu-devel@nongnu.org/msg30337.html Cc: David Ahern <daahern@cisco.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-05-26usb-linux: walk async urb list in cancelGerd Hoffmann
Lookup async urbs which are to be canceled using the linked list instead of the direct opaque pointer. There are two reasons we are doing that: First, to avoid the opaque poiner to the callback, which is needed for upcoming cleanups. Second, because we might need multiple urbs per request for highspeed support, so a single opaque pointer doesn't cut it any more anyway. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-05-26usb-linux: track aurbs in listGerd Hoffmann
This patch adds code to track all async urbs in a linked list, so we can find them without having to pass around a opaque pointer to them. Prerequisite for the cleanups. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-05-26usb-linux: add hostport propertyGerd Hoffmann
This patch adds a hostport property which allows to specify the host usb devices to pass through by bus number and physical port. This means you can basically hand over one (or more) of the usb plugs on your host to the guest and whatever device is plugged in there will show up in the guest. Usage: -device usb-host,hostbus=1,hostport=1 You can figure the port numbers by plugging in some usb device, then find it in "info usbhost" and pick bus and port specified there. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-05-26usb-linux: fix device path aka physical port handlingGerd Hoffmann
The device path isn't just a number. It specifies the physical port the device is connected to and in case the device is connected via usb hub you'll have two numbers there, like this: "5.1". The first specifies the root port where the hub is plugged into, the second specifies the port number of the hub where the device is plugged in. With multiple hubs chained the string can become longer. This patch renames devpath to port and makes it a string. It also adapts the sysfs parsing code accordingly. The parser code is also more strict now and skips the root hubs (which can't be assigned anyway). The "info usbhost" monitor command now prints bus number, (os-assigned) device address and physical port for each device. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-05-26usb-linux: use usb_generic_handle_packet()Hans de Goede
Make the linux usb host passthrough code use the usb_generic_handle_packet() function, rather then the curent DYI code. This removes 200 lines of almost identical code. Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2011-05-09usb-linux: Add missing break statementStefan Weil
cppcheck report: usb-linux.c:661: warning: Redundant assignment of "len" in switch Cc: Hans de Goede <hdegoede@redhat.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-05-04usb: move complete callback to port opsGerd Hoffmann
2011-05-04usb-linux: Add support for buffering iso out usb packetsHans de Goede
Extend the iso buffering code to also buffer iso out packets, this fixes for example using usb speakers with usb redirection. Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2011-05-04usb-linux: We only need to keep track of 15 endpointsHans de Goede
Currently we reserve room for endpoint data for 16 endpoints, but given that we only use endpoint data for endpoints 1-15, and always index the array with the endpoint-number - 1, 15 is enough. Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2011-05-04usb-linux: Refuse iso packets when max packet size is 0 (alt setting 0)Hans de Goede
Refuse iso usb packets when then max packet size for the endpoint is 0, this avoids an abort in usb_host_alloc_iso() caused by trying to qemu_malloc a 0 bytes large buffer.
2011-05-04usb-linux: Refuse packets for endpoints which are not in the usb descriptorHans de Goede
If an endpoint is not in the usb descriptor we've no idea what kind of endpoint it is and thus how to handle it, refuse packages in this case. Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2011-05-04usb-linux: Add support for buffering iso usb packetsHans de Goede
Currently we are submitting iso packets to the host one at a time, as we receive them from the emulated host controller. This has 2 problems: 1) If we were fast enough to submit every packet in time for the next host host controller usb frame, we would be generating 1000 hardware interrupts per second on the host 2) We are not fast enough to submit every packet in time for the next host host controller usb frame, causing us to not submit iso urbs in some usb frames which causes devices with an endpoint with an interval of 1 ms (so every frame) to loose data. This causes for example ubs-1.1 webcams to not work properly (usb-2.0 is not supported at all atm). This patch fixes both problems by changing the iso packet pass through handling to buffer packets. This version only does so for iso input packets (webcams, audio in) I'm working on a second patch extending this to iso output packets (audio out). This patch makes use of the linux batching of iso packets in one urb. When an iso in packet gets received from the emulated host controller, it immediately submits 3 urbs with 32 iso in packets each. This causes the host to only get an hw interrupt every 32 packets dropping the interrupt rate to 32 interrupts per second and gives it a queue of urbs to work from once the first 32 iso in packets have been received to make sure no packets are dropped. Besides submitting a whole bunch or urbs as soon as the first urb is received, effectively creating a buffer inside the kernel, this patch also gets rid of the asynchroneous completion for iso in urbs. Instead they are only marked as complete in the fd write callback (which usbfs uses to signal complete urbs). These complete packets then get consumed by returning them synchroneously to the emulated host controller when it submits an iso in packet for the ep in question. When no complete packets are ready (which happens when the stream is starting) a 0 length packet gets returned to the emulated host controller. With this patch I've several usb-1.1 webcams working well with usb pass through, where as without this patch none of them work. Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2011-05-04usb-linux: Get the alt. setting from sysfs rather then asking the devHans de Goede
At least one device I have lies when receiving a USB_REQ_GET_INTERFACE, always returning 0 even if the alternate setting is different. This is likely caused because in practice this control message is never used as the operating system's usb stack knows which alternate setting it has told the device to get into, and thus this ctrl message does not get tested by device manufacturers. When usb_fs_type == USB_FS_SYS, the active alt. setting can be read directly from sysfs, which allows using this device through qemu's usb redirection. More in general it seems a good idea to not send needless control msg's to devices, esp. as the code in question is called every time a set_interface is done. Which happens multiple times during virtual machine startup, and when device drivers are activating the usb device. Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2011-05-04usb-linux: introduce a usb_linux_alt_setting functionHans de Goede
The next patch in this series introduces multiple ways to get the alt setting dependent upon usb_fs_type, it is cleaner to put this into its own function. Note that this patch also changes the assumed alt setting in case of an error getting the alt setting to be 0 (a sane default) rather then the interface numberwhich makes no sense. Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2011-04-16usb: fix spelling errors in usb-linux.cBrad Hards
Signed-off-by: Brad Hards <bradh@frogmouth.net> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-04-16usb: initialise data element in Linux USB_DISCONNECT ioctlBrad Hards
This isn't used, but leaving it empty causes valgrind noise. Signed-off-by: Brad Hards <bradh@frogmouth.net> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-03-21change all rt_clock references to use millisecond resolution accessorsPaolo Bonzini
This was done with: sed -i '/get_clock\>.*rt_clock/s/get_clock\>/get_clock_ms/' \ $(git grep -l 'get_clock\>.*rt_clock' ) sed -i '/new_timer\>.*rt_clock/s/new_timer\>/new_timer_ms/' \ $(git grep -l 'new_timer\>.*rt_clock' ) after checking that get_clock and new_timer never occur twice on the same line. There were no missed occurrences; however, even if there had been, they would have been caught by the compiler. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2010-11-16usb-linux: Get the active configuration from sysfs rather then asking the devHans de Goede
Some devices seem to choke on receiving a USB_REQ_GET_CONFIGURATION ctrl msg (witnessed with a digital picture frame usb id 1908:1320). When usb_fs_type == USB_FS_SYS, the active configuration can be read directly from sysfs, which allows using this device through qemu's usb redirection. More in general it seems a good idea to not send needless control msg's to devices, esp. as the code in question is called every time a set_interface is done. Which happens multiple times during virtual machine startup, and when device drivers are activating the usb device. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>