From ea07d76b67881e6126b4bb3bf10541f83deeea5e Mon Sep 17 00:00:00 2001 From: mstsirkin Date: Sun, 2 Mar 2014 21:35:23 +0000 Subject: leacy: layout detection confirmance Change accepted on VIRTIO TC Meeting, 3 December 2013 Signed-off-by: Michael S. Tsirkin git-svn-id: https://tools.oasis-open.org/version-control/svn/virtio@295 0c8fb4dd-22a2-4bb5-bc14-6c75a5f43652 --- content.tex | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) (limited to 'content.tex') diff --git a/content.tex b/content.tex index b1a293f..20a61d6 100644 --- a/content.tex +++ b/content.tex @@ -1510,16 +1510,17 @@ capability list. Therefore: -Transitional devices should expose the Legacy Interface in I/O +Transitional devices MUST expose the Legacy Interface in I/O space in BAR0. -Transitional drivers should look for the Virtio PCI +Transitional drivers MUST look for the Virtio PCI Capabilities on the capability list. -If these are not present, driver should assume a legacy device. +If these are not present, driver MUST assume a legacy device, +and use it through the legacy interface. -Non-transitional drivers should look for the Virtio PCI +Non-transitional drivers MUST look for the Virtio PCI Capabilities on the capability list. -If these are not present, driver should assume a legacy device, +If these are not present, driver MUST assume a legacy device, and fail gracefully. \paragraph{MSI-X Vector Configuration}\label{sec:Virtio Transport Options / Virtio Over PCI Bus / PCI-specific Initialization And Device Operation / Device Initialization / MSI-X Vector Configuration} -- cgit v1.2.3