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2012-02-17qdev: Fix qdev_try_create() semanticsAndreas Färber1-0/+3
Since QOM'ification, qdev_try_create() uses object_new() internally, which asserts "type != NULL" when the type is not registered. This was revealed by the combination of kvmclock's kvm_enabled() check and early QOM type registration. Check whether the class exists before calling object_new(), so that the caller (e.g., qdev_create) can fail gracefully, telling us which device could not be created. Signed-off-by: Andreas Färber <afaerber@suse.de> Cc: Anthony Liguori <aliguori@codemonkey.ws> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-15qom: Unify type registrationAndreas Färber1-2/+2
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>
2012-02-07qdev: initialize properties via QOMPaolo Bonzini1-2/+2
Similarly, use the object properties also to set the default values of the qdev properties. This requires reordering registration and initialization. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-02-07qdev: let QOM free propertiesPaolo Bonzini1-7/+1
Drop the special free callback. Instead, register a "regular" release method in the non-legacy property. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-02-07qdev: allow reusing get/set for legacy propertyPaolo Bonzini1-4/+7
In some cases, a legacy property does need a special print method but not a special parse method. In this case, we can reuse the get/set from the static (non-legacy) property. If neither parse nor print is needed, though, do not register the legacy property at all. The previous patch ensures that the right fallback will be used. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-02-07qdev: remove direct calls to print/parsePaolo Bonzini1-0/+9
There's no need to call into ->parse and ->print manually. The QOM legacy properties do that for us. Furthermore, in some cases legacy and static properties have exactly the same behavior, and we could drop the legacy properties right away. Add an appropriate fallback to prepare for this. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2012-02-03qdev: implement cleanup logic in finalizeAnthony Liguori1-25/+32
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-03qom: move properties from qdev to objectAnthony Liguori1-474/+17
This is mostly code movement although not entirely. This makes properties part of the Object base class which means that we can now start using Object in a meaningful way outside of qdev. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-03qdev: nuke qdev_init_chardev()Anthony Liguori1-9/+0
I'm sure the intentions were good here, but there's no reason this should be in qdev. Move it to qemu-char where it belongs. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-03qdev: split out UI portions into a new functionAnthony Liguori1-571/+1
qdev-monitor.c deals with the -device, device_add, and info qdm/qtree interfaces. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-03qdev: refactor away qdev_create_from_infoAnthony Liguori1-13/+22
Note that the FIXME gets fixed in series 4/4. We need to convert BusState to QOM before we can make parent_bus a link. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-03qdev: split out common init to instance_initAnthony Liguori1-13/+28
This gets us closer to being able to object_new() a qdev type and have a functioning object verses having to call qdev_create(). Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-03qdev: remove baked in notion of aliases (v2)Anthony Liguori1-6/+87
Limit them to the device_add functionality. Device aliases were a hack based on the fact that virtio was modeled the wrong way. The mechanism for aliasing is very limited in that only one alias can exist for any device. We have to support it for the purposes of compatibility but we only need to support it in device_add so restrict it to that piece of code. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> --- v1 -> v2 - Use a table for aliases (Paolo)
2012-02-03qdev: kill off DeviceInfoAnthony Liguori1-69/+1
It is no longer used in the tree since everything is done natively through QEMU Object Model. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-03qdev: kill off DeviceInfo listAnthony Liguori1-57/+30
Teach the various bits of code that need to walk through available devices to do so via QOM. Signed-off-by: Anthony Liguori
2012-02-03qdev: refactor device creation to allow bus_info to be set only in classAnthony Liguori1-23/+19
As we use class_init to set class members, DeviceInfo no longer holds this information. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-03qdev: allow classes to overload qdev functionsAnthony Liguori1-20/+33
This allows us to drop per-Device registration functions by allowing the class_init functions to overload qdev methods. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-03qdev: remove info from classAnthony Liguori1-38/+56
Now DeviceInfo is no longer used after object construction. All of the relevant members have been moved to DeviceClass. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-02-03qdev: make DeviceInfo privateAnthony Liguori1-1/+29
Introduce accessors and remove any code that directly accesses DeviceInfo members. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-27pci: convert to QEMU Object ModelAnthony Liguori1-0/+1
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-27qdev: add class_init to DeviceInfoAnthony Liguori1-0/+4
Since we are still dynamically creating TypeInfo, we need to chain the class_init function in order to be able to make use of it within subclasses of TYPE_DEVICE. This will disappear once we register TypeInfos directly. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-27qdev: add a interface to register subclassesAnthony Liguori1-2/+7
In order to introduce inheritance while still using the qdev registration interfaces, we need to be able to use a parent other than TYPE_DEVICE. Add a new interface that allows this. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-27qdev: use a wrapper to access reset and promote reset to a class methodAnthony Liguori1-5/+17
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-27qdev: don't access name through infoAnthony Liguori1-8/+8
We already have a QOM interface for this so let's use it. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-27qdev: move qdev->info to classAnthony Liguori1-29/+41
Right now, DeviceInfo acts as the class for qdev. In order to switch to a proper ObjectClass derivative, we need to ween all of the callers off of interacting directly with the info pointer. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-01-27qdev: integrate with QEMU Object Model (v2)Anthony Liguori1-2/+25
This is a very shallow integration. We register a TYPE_DEVICE but only use QOM as basically a memory allocator. This will make all devices show up as QOM objects but they will all carry the TYPE_DEVICE. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> --- v1 -> v2 - update for new location of object.h
2012-01-22vga: improve VGA logicBlue Swirl1-0/+4
Improve VGA selection logic, push check for device availabilty to vl.c. Create the devices at board level unconditionally. Remove now unused pci_try_create*() functions. Make PCI VGA devices optional. Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-01-13qdev: fix device_del by refactoring reference countingAnthony Liguori1-6/+39
Commit 8eb0283 broken device_del by having too overzealous reference counting checks. Move the reference count checks to qdev_free(), make sure to remove the parent link on free, and decrement the reference count on property removal. Reported-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-19qdev: fix hotplug when no -device is specifiedAnthony Liguori1-0/+6
The peripheral[-anon] containers are initialized lazily but since they sit on sysbus, they can not be created after realize. This was causing an abort() to occur during hotplug if no -device option was used. This was spotted by qemu-test::device-add.sh Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-19qom: register qdev properties also as non-legacy propertiesPaolo Bonzini1-3/+25
Push legacy properties into a "legacy-..." namespace, and make them available with correct types too. For now, all properties come in both variants. This need not be the case for string properties. We will revisit this after -device is changed to actually use the legacy properties. Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-19qom: distinguish "legacy" property type name from QOM type namePaolo Bonzini1-3/+6
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-19qom: interpret the return value when setting legacy propertiesPaolo Bonzini1-4/+1
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-19qom: push permission checks up into qdev_property_add_legacyPaolo Bonzini1-27/+19
qdev_property_get and qdev_property_set can generate permission denied errors themselves. Do not duplicate this functionality in qdev_get/set_legacy_property, and clean up excessive indentation. Reviewed-by: Anthony Liguori <anthony@codemonkey.ws> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-19qom: fix swapped parametersPaolo Bonzini1-1/+1
Reviewed-by: Anthony Liguori <anthony@codemonkey.ws> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-15qdev: add a qdev_get_type() function and expose as a 'type' propertyAnthony Liguori1-0/+7
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-15qom: add string property typeAnthony Liguori1-0/+59
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-15qom: optimize qdev_get_canonical_path using a parent linkAnthony Liguori1-32/+24
The full tree search was a bit unreasonable. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-15dev: add an anonymous peripheral containerAnthony Liguori1-1/+20
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-15qdev: add explicitly named devices to the root complexAnthony Liguori1-0/+14
We first add a 'peripheral' container to the root device that we add user created devices to. This provides all user created devices with a unique and isolated namespace. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-15qom: add link properties (v2)Anthony Liguori1-0/+74
Links represent an ephemeral relationship between devices. They are meant to replace the qdev concept of busses by allowing more informal relationships between devices. Links are fairly limited in their usefulness without implementing QOM-style subclassing and interfaces. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-15qom: add child properties (composition) (v3)Anthony Liguori1-0/+26
Child properties express a relationship of composition. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-15qdev: provide a path resolution (v2)Anthony Liguori1-0/+103
There are two types of supported paths--absolute paths and partial paths. Absolute paths are derived from the root device and can follow child<> or link<> properties. Since they can follow link<> properties, they can be arbitrarily long. Absolute paths look like absolute filenames and are prefixed with a leading slash. Partial paths are look like relative filenames. They do not begin with a prefix. The matching rules for partial paths are subtle but designed to make specifying devices easy. At each level of the composition tree, the partial path is matched as an absolute path. The first match is not returned. At least two matches are searched for. A successful result is only returned if only one match is founded. If more than one match is found, a flag is returned to indicate that the match was ambiguous. At the end of the day, partial path support means that if you create a device called 'ide0', you can just say 'ide0' as the path name and it will Just Work. If we internally create a device called 'i440fx', you can just say 'i440fx' and it will Just Work and long as you don't do anything silly. A management tool should probably always use absolute paths since then they don't have to deal with the possibility of ambiguity. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-15qdev: provide an interface to return canonical path from root (v2)Anthony Liguori1-0/+48
The canonical path is the path in the composition tree from the root to the device. This is effectively the name of the device. This is an incredibly unefficient implementation that will be optimized in a future patch. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-15qom: introduce root deviceAnthony Liguori1-0/+12
This is based on Jan's suggestion for how to do unique naming. The root device is the root of composition. All devices are reachable via child<> links from this device. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-15qom: register legacy properties as new style properties (v2)Anthony Liguori1-0/+86
Expose all legacy properties through the new QOM property mechanism. The qdev property types are exposed through the 'legacy<>' namespace. They are always visited as strings since they do their own string parsing. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-15qom: add new dynamic property infrastructure based on Visitors (v2)Anthony Liguori1-0/+97
qdev properties are settable only during construction and static to classes. This isn't flexible enough for QOM. This patch introduces a property interface for qdev that provides dynamic properties that are tied to objects, instead of classes. These properties are Visitor based instead of string based too. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-12-15qom: add a reference count to qdev objectsAnthony Liguori1-0/+16
To ensure that a device isn't removed from the graph until all of its links are broken. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-11-10qdev: Fix crash on -device '?=x'Markus Armbruster1-1/+1
Spotted by Coverity. Signed-off-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
2011-10-28qdev: switch children device list to QTAILQPaolo Bonzini1-12/+12
SCSI buses will need to read the children list first-to-last. This requires using a QTAILQ, because hell breaks loose if you just try inserting at the tail (thus reversing the order of all existing visits from last-to-first to first-to-tail). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2011-09-16qdev: print bus properties tooGerd Hoffmann1-0/+6
Make qdev_device_help print both device and bus properties. Helps libvirt to figure whenever bus properties such as PCI.multifunction are supported present or not. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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