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[Qemu-devel] [PATCH 0/8] Add virtio-mmio and use it in vexpress
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PATCH 0/8] Add virtio-mmio and use it in vexpress |
Date: |
Thu, 27 Jun 2013 14:04:07 +0100 |
This patch series adds an implementation of the virtio-mmio
transport, and uses it in the vexpress-a9 and vexpress-a15
board models.
The basic idea is that the board instantiates some transports,
the user can create backends which automatically plug into them
(via -device virtio-blk-backend and the like), and we tell the
guest kernel about them using a new arm/boot hook that lets
the board modify the user's device tree blob.
(The last part of this represents another reluctant step into
manipulating device trees; however interrupt-controller and
virtio nodes should be sufficiently stable to be safe as these
things go.)
Is there a convenient way to say "don't create the transport
if there's no backend to plug into it"?
Sample command line:
./build/x86/arm-softmmu/qemu-system-arm -machine type=vexpress-a15 \
-serial stdio -display none -kernel zImage \
-dtb vexpress-v2p-ca15-tc1.dtb \
-append "root=/dev/mmcblk0 rw console=ttyAMA0 rootwait earlyprintk" \
-sd arm-wheezy.img -device virtio-serial-device \
-drive if=none,file=debian_lenny_arm_small.qcow2,id=foo \
-device virtio-blk-device,drive=foo
(note that '-device virtio-blk' and '-drive if=virtio' won't
work since they will result in the creation of PCI virtio devices.)
The first two patches here are effectively a 'v2' of the versions
I sent out earlier this week; I've updated them as per review so
they no longer have the awkward "varargs don't promote" problem.
The core virtio patches are based initially on the prototype
versions I wrote back in 2011, which Fred Konrad has subsequently
updated to work on top of his virtio refactoring. I then did some
minor fixes and cleanup.
When I get mach-virt into shape that will use virtio-mmio too.
Peter Maydell (8):
device_tree: Add qemu_devtree_setprop_sized_cells() utility functions
arm/boot: Use qemu_devtree_setprop_sized_cells()
virtio: Add support for guest setting of queue size
virtio: Support transports which can specify the vring alignment
virtio: Implement MMIO based virtio transport
arm/boot: Allow boards to modify the FDT blob
vexpress: Make VEDBoardInfo extend arm_boot_info
vexpress: Add virtio-mmio transports
device_tree.c | 31 +++
hw/arm/boot.c | 33 ++--
hw/arm/vexpress.c | 128 ++++++++++--
hw/virtio/Makefile.objs | 1 +
hw/virtio/virtio-mmio.c | 424 ++++++++++++++++++++++++++++++++++++++++
hw/virtio/virtio.c | 38 +++-
include/hw/arm/arm.h | 4 +
include/hw/virtio/virtio-bus.h | 6 +
include/hw/virtio/virtio.h | 2 +
include/sysemu/device_tree.h | 62 ++++++
10 files changed, 690 insertions(+), 39 deletions(-)
create mode 100644 hw/virtio/virtio-mmio.c
--
1.7.9.5
- [Qemu-devel] [PATCH 0/8] Add virtio-mmio and use it in vexpress,
Peter Maydell <=
- [Qemu-devel] [PATCH 6/8] arm/boot: Allow boards to modify the FDT blob, Peter Maydell, 2013/06/27
- [Qemu-devel] [PATCH 3/8] virtio: Add support for guest setting of queue size, Peter Maydell, 2013/06/27
- [Qemu-devel] [PATCH 5/8] virtio: Implement MMIO based virtio transport, Peter Maydell, 2013/06/27
- [Qemu-devel] [PATCH 4/8] virtio: Support transports which can specify the vring alignment, Peter Maydell, 2013/06/27
- [Qemu-devel] [PATCH 7/8] vexpress: Make VEDBoardInfo extend arm_boot_info, Peter Maydell, 2013/06/27
- [Qemu-devel] [PATCH 8/8] vexpress: Add virtio-mmio transports, Peter Maydell, 2013/06/27
- [Qemu-devel] [PATCH 1/8] device_tree: Add qemu_devtree_setprop_sized_cells() utility functions, Peter Maydell, 2013/06/27
- [Qemu-devel] [PATCH 2/8] arm/boot: Use qemu_devtree_setprop_sized_cells(), Peter Maydell, 2013/06/27