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-rw-r--r--content.tex8
1 files changed, 7 insertions, 1 deletions
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@@ -1094,7 +1094,13 @@ Queue Notify address.
\subsubsection{ISR status capability}\label{sec:Virtio Transport Options / Virtio Over PCI Bus / PCI Device Layout / ISR status capability}
The device MUST present at least one VIRTIO_PCI_CAP_ISR_CFG capability. This
-refers to at least a single byte, which contains the 8-bit ISR status field.
+refers to at least a single byte, which contains the 8-bit ISR status field:
+\begin{lstlisting}
+#define VIRTIO_PCI_ISR_VQ 0x1
+#define VIRTIO_PCI_ISR_CONFIG 0x2
+\end{lstlisting}
+
+See sections \ref{sec:Virtio Transport Options / Virtio Over PCI Bus / PCI-specific Initialization And Device Operation / Virtqueue Interrupts From The Device} and \ref{sec:Virtio Transport Options / Virtio Over PCI Bus / PCI-specific Initialization And Device Operation / Notification of Device Configuration Changes} for how this is used.
\subsubsection{Device specific structure}\label{sec:Virtio Transport Options / Virtio Over PCI Bus / PCI Device Layout / Device specific structure}