[virtio-dev] Re: [PATCH v9 4/4] transport-pci: Introduce group legacy group member config region access

[Cornelia Huck <cohuck@redhat.com>]

On Wed, Jul 05 2023, Parav Pandit <parav@nvidia.com> wrote:

> diff --git a/admin-cmds-legacy-interface.tex b/admin-cmds-legacy-interface.tex
> index 09001d5..571b256 100644
> --- a/admin-cmds-legacy-interface.tex
> +++ b/admin-cmds-legacy-interface.tex
> @@ -150,7 +150,7 @@ \subsubsection{Legacy Interfaces}\label{sec:Basic Facilities of a Virtio Device
>  by the device.
>  
>  Refer to the specific transport section for the definition of the
> -\field{region_data}.
> +\field{region_data}. For PCI transport refer to section \ref{sec:Virtio Transport Options / Virtio Over PCI Bus / Legacy Interface: Group Member Device Configuration Region Access}.

"For the PCI transport, refer to..."

>  
>  This command is currently only defined for the PCI SR-IOV group type.
>  

(...)

> diff --git a/transport-pci-legacy-regs.tex b/transport-pci-legacy-regs.tex
> new file mode 100644
> index 0000000..e4f70c9
> --- /dev/null
> +++ b/transport-pci-legacy-regs.tex
> @@ -0,0 +1,41 @@
> +\subsection{Legacy Interface: Group member device Configuration Region Access}\label{sec:Virtio Transport Options / Virtio Over PCI Bus / Legacy Interface: Group Member Device Configuration Region Access}
> +
> +The PCI owner device or the member device or both supports driver notifications using

s/supports/support/

> +a notification region defined in the \field{struct virtio_pci_notify_region}.

s/in the/in/

> +
> +In \field{struct virtio_virtio_admin_cmd_legacy_notify_query_entry},
> +\field{region_data} is defined as following:
> +
> +\begin{lstlisting}
> +struct virtio_pci_legacy_notify_region {
> +        u8 owner;  /* When set to 1, notification region is of the owner device */
> +        u8 bar;    /* BAR of the member or owner device */
> +        u8 padding[6];
> +        le64 offset; /* Offset within bar. */
> +};
> +\end{lstlisting}
> +
> +The group owner device hardwire VF BAR0 in the SR-IOV Extended capability.

s/hardwire/hardwires/

> +
> +The group member device does not use PCI BAR0 in various Virtio PCI capabilities

"in the various" caps? Or "in some of the" caps?

> +listed in section \ref{sec:Virtio Transport Options / Virtio Over PCI Bus / Virtio Structure PCI Capabilities}.


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