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[Qemu-devel] [RFC PATCH v6 0/6] Virtio refactoring.
From: |
fred . konrad |
Subject: |
[Qemu-devel] [RFC PATCH v6 0/6] Virtio refactoring. |
Date: |
Fri, 7 Dec 2012 14:32:29 +0100 |
From: KONRAD Frederic <address@hidden>
You can clone that from here :
git.greensocs.com/home/greensocs/git/qemu_virtio.git virtio_refactoring_v6
The problem with the last RFC v5 was that virtio-blk refactoring broke
virtio-blk-pci device ( SEGFAULT ). So I modify this last step to fix that
issue.
In order to not break anything, I think we have to refactor virtio-pci-blk in a
next step then add a supplementary step which clean virtio-blk
( eg : fix the cast ).
Does it make sense ?
This patch-set is :
* Introducing a virtio-bus which extends bus-state.
* Implementing a virtio-pci-bus which extends virtio-bus.
* Implementing a virtio-pci device which has a virtio-pci-bus.
* Implementing virtio-device which extends device-states.
* Implementing a virtio-blk which extends virtio-device.
The first patch is a modification of qdev-monitor.c, it forces the function
qbus_find_recursive(..) to return a non-full bus, and return an error if the
desired bus ( with "bus=" option ) is full. It add a max_dev field to the
bus_state structure. If max_dev=0 it has no limitation, if not the maximum
amount of device connected to the bus is max_dev.
Changes v5 -> v6:
* Renamed virtio_common_init_ to virtio_init, modify virtio_common_init to
allocate and call virtio_init. Drop the unused structure size parameters.
* Renamed init/exit callback in VirtioBusClass.
* Renamed virtio_blk_init virtio_blk_common_init.
* Modified virtio_blk_init to call virtio_blk_common_init.
Changes v4 -> v5:
* use ERROR_CLASS_GENERIC_ERROR in place of creating a new error type for
the maximum device limitation. ( Peter )
* Removed bus_in_use function. We assume that the virtio-bus is not in use,
when plugin in. ( Peter )
* Added virtio_bus_destroy_device().
* Implemented the exit function of virtio-pci.
* Implemented the init callback for virtio-pci ( must be modified, it still
access vdev directly. ).
* Implemented the exit callback for virtio-pci.
* Started virtio-device refactoring.
* Started virtio-blk refactoring.
Changes v3 -> v4:
* Added virtio-bus.o in Makefile.objs ( accidentally dropped from v3 ).
* *const* TypeInfo in virtio-bus.
* Introduced virtio-pci-bus.
* Reintroduced virtio-pci.
* Introduced virtio-device.
* Started virtio-blk refactoring.
* Added an error type in qerror.h for the "bus full" error.
Changes v2 -> v3:
* Added VirtioBusClass.
* Renamed VirtioBus -> VirtioBusState.
* Renamed qbus -> parent_obj.
* Plug the device only in a non-full bus.
Changes v1 -> v2:
* All the little fix you suggest ( License, Debug printf, naming convention,
...)
* Added get_virtio_device_id(), and remove the pci_id* from the VirtioBus
structure.
* Added virtio_bus_reset().
* Added cast macros VIRTIO_BUS.
* Added virtio_bus_plug_device.
* Replaced the old-style "bus->qbus" by BUS() macro.
Fred.
KONRAD Frederic (6):
qdev : add a maximum device allowed field for the bus.
virtio-bus : Introduce virtio-bus
virtio-pci-bus : Introduce virtio-pci-bus.
virtio-pci : Refactor virtio-pci device.
virtio-device : Refactor virtio-device.
virtio-blk : Add the virtio-blk device.
hw/Makefile.objs | 1 +
hw/qdev-core.h | 2 +
hw/qdev-monitor.c | 11 ++++
hw/virtio-blk.c | 101 ++++++++++++++++++++++++++++++++----
hw/virtio-blk.h | 4 ++
hw/virtio-bus.c | 111 ++++++++++++++++++++++++++++++++++++++++
hw/virtio-bus.h | 82 ++++++++++++++++++++++++++++++
hw/virtio-pci.c | 149 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
hw/virtio-pci.h | 33 +++++++++++-
hw/virtio.c | 50 ++++++++++++++----
hw/virtio.h | 28 ++++++++++
11 files changed, 550 insertions(+), 22 deletions(-)
create mode 100644 hw/virtio-bus.c
create mode 100644 hw/virtio-bus.h
--
1.7.11.7
- [Qemu-devel] [RFC PATCH v6 0/6] Virtio refactoring.,
fred . konrad <=
- [Qemu-devel] [RFC PATCH v6 1/6] qdev : add a maximum device allowed field for the bus., fred . konrad, 2012/12/07
- [Qemu-devel] [RFC PATCH v6 3/6] virtio-pci-bus : Introduce virtio-pci-bus., fred . konrad, 2012/12/07
- [Qemu-devel] [RFC PATCH v6 2/6] virtio-bus : Introduce virtio-bus, fred . konrad, 2012/12/07
- [Qemu-devel] [RFC PATCH v6 5/6] virtio-device : Refactor virtio-device., fred . konrad, 2012/12/07
- [Qemu-devel] [RFC PATCH v6 6/6] virtio-blk : Add the virtio-blk device., fred . konrad, 2012/12/07
- [Qemu-devel] [RFC PATCH v6 4/6] virtio-pci : Refactor virtio-pci device., fred . konrad, 2012/12/07
- Re: [Qemu-devel] [RFC PATCH v6 0/6] Virtio refactoring., Michael S. Tsirkin, 2012/12/17