We already have USB_RET_NAK, but that means that a device does not want
to send/receive right now. But with host / network redirection we can
actually have a transaction fail due to some io error, rather then ie
the device just not having any data atm.
This patch adds a new error code named USB_RET_IOERROR for this, and uses
it were appropriate.
Notes:
-Currently all usb-controllers handle this the same as NODEV, but that
may change in the future, OHCI could indicate a CRC error instead for example.
-This patch does not touch hw/usb-musb.c, that is because the code in there
handles STALL and NAK specially and has a if status < 0 generic catch all
for all other errors
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
When a usb device is busy processing a packet (and returns
USB_RET_ASYNC), continue walking the transfer descriptor list
and process them to fill the request queue.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Restruct the uhci_handle_td return code processing to make the
control flow more clear and the code more readable.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
UHCIAsync structs (in-flight requests) grouped in UHCIQueue now.
Each (active) usb endpoint gets its own UHCIQueue.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* 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>
With the separation of the device lookup (via usb_find_device) and
packet processing we can lookup device and endpoint before setting up
the usb packet. So we can initialize USBPacket->ep early and keep it
valid for the whole lifecycle of the USBPacket. Also the devaddr and
devep fields are not needed any more.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add enum to track the status of USBPackets, use that instead of the
owner pointer to figure whenever a usb packet is currently in flight
or not. Add some more packet status sanity checks. Also rename the
USBEndpoint pointer from "owner" to "ep".
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The USB subsystem pipes internal reset notifications through
usb_handle_packet() with a special magic PID. This indirection
is a pretty pointless excercise as it ends up being handled by
usb_generic_handle_packet anyway.
Replace the USB_MSG_RESET with a usb_device_reset() function
which can be called directly. Also rename the existing usb_reset()
function to usb_port_reset() to avoid confusion.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The OS is allowed to make the UHCI Controller run in circles. That is
usually done to serve multiple connected USB devices in a robin-round
fashion, so the available USB bandwidth is evenly distributed between
devices.
The uhci emulation handles this in a very poor way though. When it
figures it runs in circles it stops processing unconditionally, so
it usually processes at most a single transfer desriptor per queue,
even if there are multiple transfer descriptors are queued up.
This patch makes uhci act in a more sophisticated way. It keeps track
of successful processed transfer descriptors and transfered bytes. Then
it will stop processing when there is nothing to do (no transfer
descriptor was completed the last round) or when the transfered data
reaches the usb bandwidth limit.
Result is that the usb-storage devices connected to uhci are ten times
faster, mkfs.vfat time for a 64M stick goes down from five seconds to
a half second. Reason for this is that we are now processing up to 20
transfer descriptors (with 64 bytes each) per frame instead of a single
one.
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>
These are various small stylistic changes which help make things more
consistent such that the automated conversion script can be simpler.
It's not necessary to agree or disagree with these style changes because all
of this code is going to be rewritten by the patch monkey script anyway.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Add USBEndpoint for the control endpoint to USBDevices. Link async
packets to the USBEndpoint instead of the USBDevice.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This patch removes some unnecessary casts in the usb-uhci device,
introduced by commit fff23ee9a5
'usb-uhci: Use PCI DMA stub functions'.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This updates the usb-uhci device emulation to use the explicit PCI DMA
wrapper to initialize its scatter/gathjer structure. This means this
driver should not need further changes when the sglist interface is
extended to support IOMMUs.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
commit 891fb2cd45 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>
Fix up some erroneous comments in code:
interrupt pins are named A-D, the
interrupt pin register is always readonly
and isn't zeroed out on reset.
Signed-off-by: Michael S. Tsirkin <mst@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>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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>
Spec on UHCI_STS_USBERR: "If the TD on which the error interrupt
occurred also had its IOC bit set, both this bit and Bit 0 are set."
Make UHCI emulation do that.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add ich9 controllers, Factor out properties to a separate
struct and reference it to reduce duplication.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
To use as a companion controller set the masterbus property.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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 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>
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>
expire_time must be initialited when the guest activates the
usb scheduler, not at device creation time.
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>
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>
UHCI host controller status register indicates error and
an interrupt is triggered on BABBLE and STALL errors.
Signed-off-by: Jan Vesely <jano.vesely@gmail.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This was done with:
sed -i 's/qemu_get_clock\>/qemu_get_clock_ns/' \
$(git grep -l 'qemu_get_clock\>' )
sed -i 's/qemu_new_timer\>/qemu_new_timer_ns/' \
$(git grep -l 'qemu_new_timer\>' )
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.
There was exactly one false positive in qemu_run_timers:
- current_time = qemu_get_clock (clock);
+ current_time = qemu_get_clock_ns (clock);
which is of course not in this patch.
Signed-off-by: Paolo Bonzini <pbonzini@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>
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>
