diff options
| author | hornet <hornet@0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652> | 2013-10-29 13:15:55 +0000 |
|---|---|---|
| committer | hornet <hornet@0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652> | 2013-10-29 13:15:55 +0000 |
| commit | 4a88c5a8993faf7ea62a24827639bac0bdde8034 (patch) | |
| tree | ec948802b5cd0d27d3826d0e73d12e23d0c30f72 /virtio-v1.0-wd01-part1-specification.txt | |
| parent | 0ef4832f2cc403021ffb66557067c72a6583bd55 (diff) | |
2.3.2 MMIO: Add config space version register
... to allow synchronisation between the guest and the host.
Based on Rusty's original patch, see VIRTIO-35.
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
git-svn-id: https://tools.oasis-open.org/version-control/svn/virtio@68 0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652
Diffstat (limited to 'virtio-v1.0-wd01-part1-specification.txt')
| -rw-r--r-- | virtio-v1.0-wd01-part1-specification.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/virtio-v1.0-wd01-part1-specification.txt b/virtio-v1.0-wd01-part1-specification.txt index 559ef75..e812f8d 100644 --- a/virtio-v1.0-wd01-part1-specification.txt +++ b/virtio-v1.0-wd01-part1-specification.txt @@ -1431,6 +1431,13 @@ configuration space. The following list presents their layout: only when QueueReady is set to zero (0x0), so when the queue is not in use. +* 0x0fc | R | ConfigGeneration + Configuration atomicity value. + Changes every time the configuration noticeably changes. This + means the device may only change the value after a configuration + read operation, but it must change if there is any risk of a + device seeing an inconsistent configuration state. + * 0x100+ | RW | Config Device-specific configuration space starts at an offset 0x100 and is accessed with byte alignment. Its meaning and size |