hw/usb/bus.c: PCAP adding 0xA in Windows version

Since Windows text files use CRLFs for all \n, the Windows version of QEMU
inserts a CR in the PCAP stream when a LF is encountered when using USB PC

hw/usb/bus.c: PCAP adding 0xA in Windows version

Since Windows text files use CRLFs for all \n, the Windows version of QEMU
inserts a CR in the PCAP stream when a LF is encountered when using USB PCAP
files. This is due to the fact that the PCAP file is opened as TEXT instead
of BINARY.

To show an example, when using a very common protocol to USB disks, the BBB
protocol uses a 10-byte command packet. For example, the READ_CAPACITY(10)
command will have a command block length of 10 (0xA). When this 10-byte
command (part of the 31-byte CBW) is placed into the PCAP file, the Windows
file manager inserts a 0xD before the 0xA, turning the 31-byte CBW into a
32-byte CBW.

Actual CBW:
0040 55 53 42 43 01 00 00 00 08 00 00 00 80 00 0a 25 USBC...........%
0050 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ...............

PCAP CBW
0040 55 53 42 43 01 00 00 00 08 00 00 00 80 00 0d 0a USBC............
0050 25 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 %..............

I believe simply opening the PCAP file as BINARY instead of TEXT will fix
this issue.

Resolves: https://bugs.launchpad.net/qemu/+bug/2054889
Signed-off-by: Benjamin David Lunt <benlunt@fysnet.net>
Message-ID: <000101da6823$ce1bbf80$6a533e80$@fysnet.net>
[thuth: Break long line to avoid checkpatch.pl error]
Signed-off-by: Thomas Huth <thuth@redhat.com>

show more ...

hw/usb: remove usb_bus_find

Inline the sole remaining use, which is for the -usbdevice command line.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@l

hw/usb: remove usb_bus_find

Inline the sole remaining use, which is for the -usbdevice command line.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240223124406.234509-9-pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>

show more ...

usb: inline device creation functions

Allow boards to use the device creation functions even if USB itself
is not available; of course the functions will fail inexorably, but
this can be okay if the

usb: inline device creation functions

Allow boards to use the device creation functions even if USB itself
is not available; of course the functions will fail inexorably, but
this can be okay if the calls are conditional on the existence of
some USB host controller device. This is for example the case for
hw/mips/loongson3_virt.c.

Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

hw/usb: Constify VMState

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20231221031652.119827-59-richard.henderson@linaro.org>

qapi: introduce x-query-usb QMP command

This is a counterpart to the HMP "info usb" command. It is being
added with an "x-" prefix because this QMP command is intended as an
adhoc debugging tool and

qapi: introduce x-query-usb QMP command

This is a counterpart to the HMP "info usb" command. It is being
added with an "x-" prefix because this QMP command is intended as an
adhoc debugging tool and will thus not be modelled in QAPI as fully
structured data, nor will it have long term guaranteed stability.
The existing HMP command is rewritten to call the QMP command.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>

show more ...

qbus: Rename qbus_create_inplace() to qbus_init()

Rename qbus_create_inplace() to qbus_init(); this is more in line
with our usual naming convention for functions that in-place
initialize objects.

qbus: Rename qbus_create_inplace() to qbus_init()

Rename qbus_create_inplace() to qbus_init(); this is more in line
with our usual naming convention for functions that in-place
initialize objects.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20210923121153.23754-5-peter.maydell@linaro.org

show more ...

usb: remove support for -usbdevice parameters

No device needs them anymore and in fact they're undocumented.
Remove the code. The only change in behavior is that "-usbdevice
braille:hello" now repo

usb: remove support for -usbdevice parameters

No device needs them anymore and in fact they're undocumented.
Remove the code. The only change in behavior is that "-usbdevice
braille:hello" now reports an error, which is a bugfix.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210310173323.1422754-2-thuth@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

show more ...

hw/usb/bus: Remove the "full-path" property

This property was only required for the pc-1.0 and earlier machine
types. Since these have been removed now, we can delete the property
as well.

Signed-o

hw/usb/bus: Remove the "full-path" property

This property was only required for the pc-1.0 and earlier machine
types. Since these have been removed now, we can delete the property
as well.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210302120152.118042-1-thuth@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

show more ...

usb: add pcap support.

Log all traffic of a specific usb device to a pcap file for later
inspection. File format is compatible with linux usb monitor.

Usage:
qemu -device usb-${somedevice},pcap=

usb: add pcap support.

Log all traffic of a specific usb device to a pcap file for later
inspection. File format is compatible with linux usb monitor.

Usage:
qemu -device usb-${somedevice},pcap=file.pcap
wireshark file.pcap

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210119194452.2148048-1-kraxel@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

show more ...

usb/bus: Remove dead assignment in usb_get_fw_dev_path()

Clang static code analyzer show warning:
qemu/hw/usb/bus.c:615:13: warning: Value stored to 'pos' is never read
pos += snprintf(f

usb/bus: Remove dead assignment in usb_get_fw_dev_path()

Clang static code analyzer show warning:
qemu/hw/usb/bus.c:615:13: warning: Value stored to 'pos' is never read
pos += snprintf(fw_path + pos, fw_len - pos, "%s@%lx",

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Message-Id: <20200827110311.164316-9-kuhn.chenqun@huawei.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

show more ...

error: Eliminate error_propagate() manually

When all we do with an Error we receive into a local variable is
propagating to somewhere else, we can just as well receive it there
right away. The prev

error: Eliminate error_propagate() manually

When all we do with an Error we receive into a local variable is
propagating to somewhere else, we can just as well receive it there
right away. The previous two commits did that for sufficiently simple
cases with Coccinelle. Do it for several more manually.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200707160613.848843-37-armbru@redhat.com>

show more ...

qdev: Use returned bool to check for qdev_realize() etc. failure

Convert

foo(..., &err);
if (err) {
...
}

to

if (!foo(..., &err)) {
...
}

for qdev_realize(),

qdev: Use returned bool to check for qdev_realize() etc. failure

Convert

foo(..., &err);
if (err) {
...
}

to

if (!foo(..., &err)) {
...
}

for qdev_realize(), qdev_realize_and_unref(), qbus_realize() and their
wrappers isa_realize_and_unref(), pci_realize_and_unref(),
sysbus_realize(), sysbus_realize_and_unref(), usb_realize_and_unref().
Coccinelle script:

@@
identifier fun = {
isa_realize_and_unref, pci_realize_and_unref, qbus_realize,
qdev_realize, qdev_realize_and_unref, sysbus_realize,
sysbus_realize_and_unref, usb_realize_and_unref
};
expression list args, args2;
typedef Error;
Error *err;
@@
- fun(args, &err, args2);
- if (err)
+ if (!fun(args, &err, args2))
{
...
}

Chokes on hw/arm/musicpal.c's lcd_refresh() with the unhelpful error
message "no position information". Nothing to convert there; skipped.

Fails to convert hw/arm/armsse.c, because Coccinelle gets confused by
ARMSSE being used both as typedef and function-like macro there.
Converted manually.

A few line breaks tidied up manually.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Greg Kurz <groug@kaod.org>
Message-Id: <20200707160613.848843-5-armbru@redhat.com>

show more ...

qdev: Drop qbus_set_bus_hotplug_handler() parameter @errp

All callers pass &error_abort. Drop the parameter.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Daniel P. Berrangé" <berrange@redhat.com>

qdev: Drop qbus_set_bus_hotplug_handler() parameter @errp

All callers pass &error_abort. Drop the parameter.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Daniel P. Berrangé" <berrange@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20200630090351.1247703-14-armbru@redhat.com>

show more ...

usb: Eliminate usb_try_create_simple()

usb_try_create_simple() is qdev_try_new() and qdev_realize_and_unref()
with more verbose error messages. Of its two users, one ignores
errors, and the other a

usb: Eliminate usb_try_create_simple()

usb_try_create_simple() is qdev_try_new() and qdev_realize_and_unref()
with more verbose error messages. Of its two users, one ignores
errors, and the other asserts they are impossible.

Make them use qdev_try_new() and qdev_realize_and_unref() directly,
and eliminate usb_try_create_simple

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200610053247.1583243-30-armbru@redhat.com>

show more ...

usb: usb_create() is now unused, drop

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Paolo Bon

usb: usb_create() is now unused, drop

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200610053247.1583243-29-armbru@redhat.com>

show more ...

usb: Convert uses of usb_create()

Replace

dev = usb_create(bus, type_name);
...
object_property_set_bool(OBJECT(dev), true, "realized", &err);

by

dev = isa_new(type_name);
...

usb: Convert uses of usb_create()

Replace

dev = usb_create(bus, type_name);
...
object_property_set_bool(OBJECT(dev), true, "realized", &err);

by

dev = isa_new(type_name);
...
usb_realize_and_unref(dev, bus, &err);

Recent commit "qdev: New qdev_new(), qdev_realize(), etc." explains
why.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200610053247.1583243-28-armbru@redhat.com>

show more ...

usb: New usb_new(), usb_realize_and_unref()

I'm converting from qdev_create()/qdev_init_nofail() to
qdev_new()/qdev_realize_and_unref(); recent commit "qdev: New
qdev_new(), qdev_realize(), etc." ex

usb: New usb_new(), usb_realize_and_unref()

I'm converting from qdev_create()/qdev_init_nofail() to
qdev_new()/qdev_realize_and_unref(); recent commit "qdev: New
qdev_new(), qdev_realize(), etc." explains why.

USB devices use qdev_create() through usb_create().

Provide usb_new() and usb_realize_and_unref() for converting USB
devices.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200610053247.1583243-27-armbru@redhat.com>

show more ...

qdev: Convert uses of qdev_create() manually

Same transformation as in the previous commit. Manual, because
convincing Coccinelle to transform these cases is somewhere between
not worthwhile and in

qdev: Convert uses of qdev_create() manually

Same transformation as in the previous commit. Manual, because
convincing Coccinelle to transform these cases is somewhere between
not worthwhile and infeasible (at least for me).

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200610053247.1583243-11-armbru@redhat.com>

show more ...

qdev: Unrealize must not fail

Devices may have component devices and buses.

Device realization may fail. Realization is recursive: a device's
realize() method realizes its components, and device_s

qdev: Unrealize must not fail

Devices may have component devices and buses.

Device realization may fail. Realization is recursive: a device's
realize() method realizes its components, and device_set_realized()
realizes its buses (which should in turn realize the devices on that
bus, except bus_set_realized() doesn't implement that, yet).

When realization of a component or bus fails, we need to roll back:
unrealize everything we realized so far. If any of these unrealizes
failed, the device would be left in an inconsistent state. Must not
happen.

device_set_realized() lets it happen: it ignores errors in the roll
back code starting at label child_realize_fail.

Since realization is recursive, unrealization must be recursive, too.
But how could a partly failed unrealize be rolled back? We'd have to
re-realize, which can fail. This design is fundamentally broken.

device_set_realized() does not roll back at all. Instead, it keeps
unrealizing, ignoring further errors.

It can screw up even for a device with no buses: if the lone
dc->unrealize() fails, it still unregisters vmstate, and calls
listeners' unrealize() callback.

bus_set_realized() does not roll back either. Instead, it stops
unrealizing.

Fortunately, no unrealize method can fail, as we'll see below.

To fix the design error, drop parameter @errp from all the unrealize
methods.

Any unrealize method that uses @errp now needs an update. This leads
us to unrealize() methods that can fail. Merely passing it to another
unrealize method cannot cause failure, though. Here are the ones that
do other things with @errp:

* virtio_serial_device_unrealize()

Fails when qbus_set_hotplug_handler() fails, but still does all the
other work. On failure, the device would stay realized with its
resources completely gone. Oops. Can't happen, because
qbus_set_hotplug_handler() can't actually fail here. Pass
&error_abort to qbus_set_hotplug_handler() instead.

* hw/ppc/spapr_drc.c's unrealize()

Fails when object_property_del() fails, but all the other work is
already done. On failure, the device would stay realized with its
vmstate registration gone. Oops. Can't happen, because
object_property_del() can't actually fail here. Pass &error_abort
to object_property_del() instead.

* spapr_phb_unrealize()

Fails and bails out when remove_drcs() fails, but other work is
already done. On failure, the device would stay realized with some
of its resources gone. Oops. remove_drcs() fails only when
chassis_from_bus()'s object_property_get_uint() fails, and it can't
here. Pass &error_abort to remove_drcs() instead.

Therefore, no unrealize method can fail before this patch.

device_set_realized()'s recursive unrealization via bus uses
object_property_set_bool(). Can't drop @errp there, so pass
&error_abort.

We similarly unrealize with object_property_set_bool() elsewhere,
always ignoring errors. Pass &error_abort instead.

Several unrealize methods no longer handle errors from other unrealize
methods: virtio_9p_device_unrealize(),
virtio_input_device_unrealize(), scsi_qdev_unrealize(), ...
Much of the deleted error handling looks wrong anyway.

One unrealize methods no longer ignore such errors:
usb_ehci_pci_exit().

Several realize methods no longer ignore errors when rolling back:
v9fs_device_realize_common(), pci_qdev_unrealize(),
spapr_phb_realize(), usb_qdev_realize(), vfio_ccw_realize(),
virtio_device_realize().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200505152926.18877-17-armbru@redhat.com>

show more ...

qom: Drop parameter @errp of object_property_add() & friends

The only way object_property_add() can fail is when a property with
the same name already exists. Since our property names are all
hardc

qom: Drop parameter @errp of object_property_add() & friends

The only way object_property_add() can fail is when a property with
the same name already exists. Since our property names are all
hardcoded, failure is a programming error, and the appropriate way to
handle it is passing &error_abort.

Same for its variants, except for object_property_add_child(), which
additionally fails when the child already has a parent. Parentage is
also under program control, so this is a programming error, too.

We have a bit over 500 callers. Almost half of them pass
&error_abort, slightly fewer ignore errors, one test case handles
errors, and the remaining few callers pass them to their own callers.

The previous few commits demonstrated once again that ignoring
programming errors is a bad idea.

Of the few ones that pass on errors, several violate the Error API.
The Error ** argument must be NULL, &error_abort, &error_fatal, or a
pointer to a variable containing NULL. Passing an argument of the
latter kind twice without clearing it in between is wrong: if the
first call sets an error, it no longer points to NULL for the second
call. ich9_pm_add_properties(), sparc32_ledma_realize(),
sparc32_dma_realize(), xilinx_axidma_realize(), xilinx_enet_realize()
are wrong that way.

When the one appropriate choice of argument is &error_abort, letting
users pick the argument is a bad idea.

Drop parameter @errp and assert the preconditions instead.

There's one exception to "duplicate property name is a programming
error": the way object_property_add() implements the magic (and
undocumented) "automatic arrayification". Don't drop @errp there.
Instead, rename object_property_add() to object_property_try_add(),
and add the obvious wrapper object_property_add().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200505152926.18877-15-armbru@redhat.com>
[Two semantic rebase conflicts resolved]

show more ...

qdev: set properties with device_class_set_props()

The following patch will need to handle properties registration during
class_init time. Let's use a device_class_set_props() setter.

spatch --macr

qdev: set properties with device_class_set_props()

The following patch will need to handle properties registration during
class_init time. Let's use a device_class_set_props() setter.

spatch --macro-file scripts/cocci-macro-file.h --sp-file
./scripts/coccinelle/qdev-set-props.cocci --keep-comments --in-place
--dir .

@@
typedef DeviceClass;
DeviceClass *d;
expression val;
@@
- d->props = val
+ device_class_set_props(d, val)

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20200110153039.1379601-20-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

show more ...

Include hw/qdev-properties.h less

In my "build everything" tree, changing hw/qdev-properties.h triggers
a recompile of some 2700 out of 6600 objects (not counting tests and
objects that don't depend

Include hw/qdev-properties.h less

In my "build everything" tree, changing hw/qdev-properties.h triggers
a recompile of some 2700 out of 6600 objects (not counting tests and
objects that don't depend on qemu/osdep.h).

Many places including hw/qdev-properties.h (directly or via hw/qdev.h)
actually need only hw/qdev-core.h. Include hw/qdev-core.h there
instead.

hw/qdev.h is actually pointless: all it does is include hw/qdev-core.h
and hw/qdev-properties.h, which in turn includes hw/qdev-core.h.
Replace the remaining uses of hw/qdev.h by hw/qdev-properties.h.

While there, delete a few superfluous inclusions of hw/qdev-core.h.

Touching hw/qdev-properties.h now recompiles some 1200 objects.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Daniel P. Berrangé" <berrange@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20190812052359.30071-22-armbru@redhat.com>

show more ...

Include hw/hw.h exactly where needed

In my "build everything" tree, changing hw/hw.h triggers a recompile
of some 2600 out of 6600 objects (not counting tests and objects that
don't depend on qemu/o

Include hw/hw.h exactly where needed

In my "build everything" tree, changing hw/hw.h triggers a recompile
of some 2600 out of 6600 objects (not counting tests and objects that
don't depend on qemu/osdep.h).

The previous commits have left only the declaration of hw_error() in
hw/hw.h. This permits dropping most of its inclusions. Touching it
now recompiles less than 200 objects.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20190812052359.30071-19-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>

show more ...

Include migration/vmstate.h less

In my "build everything" tree, changing migration/vmstate.h triggers a
recompile of some 2700 out of 6600 objects (not counting tests and
objects that don't depend o

Include migration/vmstate.h less

In my "build everything" tree, changing migration/vmstate.h triggers a
recompile of some 2700 out of 6600 objects (not counting tests and
objects that don't depend on qemu/osdep.h).

hw/hw.h supposedly includes it for convenience. Several other headers
include it just to get VMStateDescription. The previous commit made
that unnecessary.

Include migration/vmstate.h only where it's still needed. Touching it
now recompiles only some 1600 objects.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20190812052359.30071-16-armbru@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>

show more ...

Include qemu/module.h where needed, drop it from qemu-common.h

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190523143508.25387-4-armbru@redhat.com>
[Rebased with conflicts res

Include qemu/module.h where needed, drop it from qemu-common.h

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190523143508.25387-4-armbru@redhat.com>
[Rebased with conflicts resolved automatically, except for
hw/usb/dev-hub.c hw/misc/exynos4210_rng.c hw/misc/bcm2835_rng.c
hw/misc/aspeed_scu.c hw/display/virtio-vga.c hw/arm/stm32f205_soc.c;
ui/cocoa.m fixed up]

show more ...