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path: root/hw/usb.c
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2011-10-13usb: fix port resetGerd Hoffmann1-0/+12
commit 891fb2cd4592b6fe76106a69e0ca40efbf82726a removed the implicit detach before (re-)attaching in usb_attach(). Some usb host controllers used that behavior though to do a port reset by a detach+attach sequence. This patch establishes old behavior by adding a new usb_reset() function for port resets and putting it into use, thereby also unifying port reset behavior of all host controllers. The patch also adds asserts to usb_attach() and usb_detach() to make sure the calls are symmetrical. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-09-07usb: claim port at device initialization time.Gerd Hoffmann1-19/+16
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>
2011-09-07usb: fix use after freeGerd Hoffmann1-1/+1
The ->complete() callback might have released the USBPacket (uhci actually does), so we must not touch it after the callback returns. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-08-04usb: use iovecs in USBPacketGerd Hoffmann1-14/+72
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>
2011-07-05usb: assert on calling usb_attach(port, NULL) on a port without a devHans de Goede1-5/+4
with the "usb-ehci: cleanup port reset handling" patch in place no callers are calling usb_attach(port, NULL) for a port where port->dev is NULL. Doing that makes no sense as that causes the port detach op to get called for a port with nothing attached. Add an assert that port->dev != NULL when dev == NULL, and remove the check for not having a port->dev in the dev == NULL case. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-07-05usb: Make port wakeup and complete ops take a USBPort instead of a DeviceHans de Goede1-2/+2
This makes them consistent with the attach and detach ops, and in general it makes sense to make portops take a port as argument. This also makes adding support for a companion controller easier / cleaner. [ kraxel: fix usb-musb.c build ] Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-05-26usb: move cancel callback to USBDeviceInfoGerd Hoffmann1-1/+1
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: keep track of packet owner.Gerd Hoffmann1-0/+32
Keep track of the device which owns the usb packet for async processing. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-05-26usb: add usb_handle_packetGerd Hoffmann1-2/+15
Add a usb_handle_packet function, put it into use everywhere. Right now it just calls dev->info->handle_packet(), that will change in future patches though. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-05-26usb-linux: use usb_generic_handle_packet()Hans de Goede1-3/+38
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>
2011-05-26usb: Pass the packet to the device's handle_control callbackHans de Goede1-4/+7
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: Hans de Goede <hdegoede@redhat.com>
2011-05-04usb: control buffer fixesHans de Goede1-0/+6
Windows allows control transfers to pass up to 4k of data, so raise our control buffer size to 4k. For control out transfers the usb core code copies the control request data to a buffer before calling the device's handle_control callback. Add a check for overflowing the buffer before copying the data. Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2011-01-11usb: add attach callbackGerd Hoffmann1-1/+6
Add handle_attach() callback to USBDeviceInfo which is called by the generic package handler when the device is attached to the usb bus (i.e. plugged into a port). Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-01-11usb: add usb_wakeup() + wakeup callback to port opsGerd Hoffmann1-0/+7
Add wakeup callback to port ops for remote wakeup handling. Also add a usb_wakeup() function for devices which want trigger a remote wakeup. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-01-11usb: rework attach/detach workflowGerd Hoffmann1-1/+19
Add separate detach callback to USBPortOps, split uhci/ohci/musb/usbhub attach functions into two. Move common code to the usb_attach() function, only the hardware-specific bits remain in the attach/detach callbacks. Keep track of the port it is attached to for each usb device. [ v3: fix tyops in usb-musb.c ] Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-01-11usb: create USBPortOps, move attach there.Gerd Hoffmann1-1/+1
Create USBPortOps struct, move the attach function to that struct. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2009-09-09qdev/usb: add usb bus support to qdev, convert drivers.Gerd Hoffmann1-8/+8
* Add USBBus. * Add USBDeviceInfo, move device callbacks here. * Add usb-qdev helper functions. * Switch drivers to qdev. TODO: * make the rest of qemu aware of usb busses and kill the FIXMEs added by this patch. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2008-08-21usb: generic packet handler cleanup and documentation (Max Krasnyansky)aliguori1-119/+146
A bit better documentation of the USB device API, namely return codes. Rewrite of usb_generic_handle_packet() to make it more reable and easier to follow. Signed-off-by: Max Krasnyansky <maxk@kernel.org> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5049 c046a42c-6fe2-441c-8c8c-71466251a162
2007-11-17Break up vl.h.pbrook1-1/+2
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3674 c046a42c-6fe2-441c-8c8c-71466251a162
2007-09-16find -type f | xargs sed -i 's/[\t ]$//g' # on most filesths1-4/+4
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3173 c046a42c-6fe2-441c-8c8c-71466251a162
2007-07-11Spelling fixes, by Stefan Weil.ths1-1/+1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3066 c046a42c-6fe2-441c-8c8c-71466251a162
2006-08-12SCSI and USB async IO support.pbrook1-11/+21
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2107 c046a42c-6fe2-441c-8c8c-71466251a162
2006-07-19usb destroy API change (Lonnie Mendez)bellard1-4/+1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2066 c046a42c-6fe2-441c-8c8c-71466251a162
2006-05-25Rearrange SCSI disk emulation code.pbrook1-1/+4
Add USB mass storage device emulation. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1940 c046a42c-6fe2-441c-8c8c-71466251a162
2006-04-24separate file for usb hub devicebellard1-497/+0
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1848 c046a42c-6fe2-441c-8c8c-71466251a162
2006-04-24usb setup state machine fix when driver reads or writes too many bytesbellard1-4/+4
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1847 c046a42c-6fe2-441c-8c8c-71466251a162
2006-03-11Fix off by one length calciulation.pbrook1-1/+1
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1781 c046a42c-6fe2-441c-8c8c-71466251a162
2005-11-06USB user interfacebellard1-8/+7
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1603 c046a42c-6fe2-441c-8c8c-71466251a162
2005-11-05cosmeticsbellard1-52/+49
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1598 c046a42c-6fe2-441c-8c8c-71466251a162
2005-11-05initial USB supportbellard1-0/+694
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1597 c046a42c-6fe2-441c-8c8c-71466251a162
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