Commit Graph

15 Commits

Author SHA1 Message Date
Paolo Bonzini aaa4d1df2e hw: make all of hw/usb/ configurable via default-configs/
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08 18:13:12 +02:00
Paolo Bonzini 49ab747f66 hw: move target-independent files to subdirectories
This patch tackles all files that are compiled once, moving
them to subdirectories of hw/.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-04-08 18:13:12 +02:00
Gerd Hoffmann 4075975d83 usb-host: move legacy cmd line bits
The code handling the "-usbdevice host:..." legacy command line
syntax is moved to the new hw/usb/host-legacy.c file.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-02-19 12:30:05 +01:00
Gerd Hoffmann 07d17e7720 allow disabling usb smartcard support
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-02-19 12:30:04 +01:00
Gerd Hoffmann 6c83f81542 make usb devices configurable
Leave the core usb devices (usb hub, tablet, mouse, keyboard)
enabled unconditionally.  Make the other ones configurable.

Exceptions:
  - bluetooth: not qdevified yet, has a vl.c dependency because
    of that, thus disabling isn't as easy as not linking the
    object file.
  - smardcard: ccid-card-emulated depends on that one *and*
    CONFIG_SMARTCARD_NSS.  So it isn't a one-liner and comes
    as separate patch because of that.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-02-19 12:28:48 +01:00
Gerd Hoffmann 62162fff59 usb: Makefile cleanup
Group files, sprinkle in some comments.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2013-02-19 09:51:52 +01:00
Paolo Bonzini afd347ab38 build: remove CONFIG_SMARTCARD
The passthru smartcard does not have the shared library dependency, build
it unconditionally.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-01-12 17:19:38 +01:00
Hans de Goede b2d1fe67d0 usbredir: Add support for buffered bulk input (v2)
Buffered bulk mode is intended for bulk *input* endpoints, where the data is
of a streaming nature (not part of a command-response protocol). These
endpoints' input buffer may overflow if data is not read quickly enough.
So in buffered bulk mode the usb-host takes care of the submitting and
re-submitting of bulk transfers.

Buffered bulk mode is necessary for reliable operation with the bulk in
endpoints of usb to serial convertors. Unfortunatelty buffered bulk input
mode will only work with certain devices, therefor this patch also adds a
usb-id table to enable it for devices which need it, while leaving the
bulk ep handling for other devices unmodified.

Note that the bumping of the required usbredir from 0.5.3 to 0.6 does
not mean that we will now need a newer usbredir release then qemu-1.3,
.pc files reporting 0.5.3 have only ever existed in usbredir builds directly
from git, so qemu-1.3 needs the 0.6 release too.

Changes in v2:
-Split of quirk handling into quirks.c

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2013-01-08 10:56:58 +01:00
Hans de Goede a552a966f1 usb: Add packet combining functions
Currently we only do pipelining for output endpoints, since to properly
support short-not-ok semantics we can only have one outstanding input
packet. Since the ehci and uhci controllers have a limited per td packet
size guests will split large input transfers to into multiple packets,
and since we don't pipeline these, this comes with a serious performance
penalty.

This patch adds helper functions to (re-)combine packets which belong to 1
transfer at the guest device-driver level into 1 large transger. This can be
used by (redirection) usb-devices to enable pipelining for input endpoints.

This patch will combine packets together until a transfer terminating packet
is encountered. A terminating packet is a packet which meets one or more of
the following conditions:
1) The packet size is *not* a multiple of the endpoint max packet size
2) The packet does *not* have its short-not-ok flag set
3) The packet has its interrupt-on-complete flag set

The short-not-ok flag of the combined packet is that of the terminating packet.
Multiple combined packets may be submitted to the device, if the combined
packets do not have their short-not-ok flag set, enabling true pipelining.

If a combined packet does have its short-not-ok flag set the queue will
wait with submitting further packets to the device until that packet has
completed.

Once enabled in the usb-redir and ehci code, this improves the speed (MB/s)
of a Linux guest reading from a USB mass storage device by a factor of
1.2 - 1.5.

And the main reason why I started working on this, when reading from a pl2303
USB<->serial converter, it combines the previous 4 packets submitted per
device-driver level read into 1 big read, reducing the number of packets / sec
by a factor 4, and it allows to have multiple reads outstanding. This allows
for much better latency tolerance without the pl2303's internal buffer
overflowing (which was happening at 115200 bps, without serial flow control).

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-11-01 15:17:58 +01:00
Gerd Hoffmann e433785a76 usb/ehci: add sysbus variant
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-11-01 13:10:10 +01:00
Gerd Hoffmann 0bf96f9457 usb/ehci: split into multiple source files
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-11-01 13:10:10 +01:00
Stefan Weil c9159fe9aa Remove libhw
The entries for libhw* are no longer needed in .gitignore.

There is also no longer a difference between common-obj-y and
hw-obj-y, so one of those two macros is sufficient.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-10-05 16:07:49 -05:00
Gerd Hoffmann 0f58f68b58 usb: add usb attached scsi emulation
$subject says all.  First cut.

It's a pure UAS (usb attached scsi) emulation, without BOT (bulk-only
transport) compatibility.  If your guest can't handle it use usb-storage
instead.

The emulation works like any other scsi hba emulation (eps, lsi, virtio,
megasas, ...).  It provides just the HBA where you can attach scsi
devices as you like using '-device'.  A single scsi target with up to
256 luns is supported.

For now only usb 2.0 transport is supported.  This will change in the
future though as I plan to use this as playground when codeing up &
testing usb 3.0 transport and streams support in the qemu usb core and
the xhci emulation.

No migration support yet.  I'm planning to add usb 3.0 support first as
this probably requires saving additional state.

Special thanks go to Paolo for bringing the qemu scsi emulation into
shape, so this can be added nicely without having to touch a single line
of scsi code.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-07-12 15:00:39 +02:00
Paolo Bonzini be1029ec30 build: convert libhw to nested Makefile.objs
After this patch, the libhw* directories will have a hierarchy
that mimics the source tree.  This is useful because we do have
a couple of files there that are in the top source directory.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-06-07 09:21:17 +02:00
Paolo Bonzini 3d5a3f9a7f build: move target-independent hw/ objects to nested Makefile.objs
This patch starts converting the hw/ directory.  Some files in hw/
are compiled once, some twice (32-/64-bit), some once per target.
Each category is moved in a separate patch.

After this patch, the files that are compiled once will show the
same hierarchy in the build tree as they do in the source tree,
for example hw/qdev.o instead of just qdev.o.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-06-07 09:21:16 +02:00