40 lines
993 B
YAML
40 lines
993 B
YAML
|
# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause)
|
||
|
|
%YAML 1.2
|
||
|
|
---
|
||
|
|
$id: http://devicetree.org/schemas/iommu/xen,grant-dma.yaml#
|
||
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
||
|
|
|
||
|
|
title: Xen specific IOMMU for virtualized devices (e.g. virtio)
|
||
|
|
|
||
|
|
maintainers:
|
||
|
|
- Stefano Stabellini <sstabellini@kernel.org>
|
||
|
|
|
||
|
|
description:
|
||
|
|
The Xen IOMMU represents the Xen grant table interface. Grant mappings
|
||
|
|
are to be used with devices connected to the Xen IOMMU using the "iommus"
|
||
|
|
property, which also specifies the ID of the backend domain.
|
||
|
|
The binding is required to restrict memory access using Xen grant mappings.
|
||
|
|
|
||
|
|
properties:
|
||
|
|
compatible:
|
||
|
|
const: xen,grant-dma
|
||
|
|
|
||
|
|
'#iommu-cells':
|
||
|
|
const: 1
|
||
|
|
description:
|
||
|
|
The single cell is the domid (domain ID) of the domain where the backend
|
||
|
|
is running.
|
||
|
|
|
||
|
|
required:
|
||
|
|
- compatible
|
||
|
|
- "#iommu-cells"
|
||
|
|
|
||
|
|
additionalProperties: false
|
||
|
|
|
||
|
|
examples:
|
||
|
|
- |
|
||
|
|
iommu {
|
||
|
|
compatible = "xen,grant-dma";
|
||
|
|
#iommu-cells = <1>;
|
||
|
|
};
|