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Mon, 13 Mar 2023 08:27:12 -0500 Received: from xhdipdslab41.xilinx.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2375.34 via Frontend Transport; Mon, 13 Mar 2023 08:27:04 -0500 From: Nipun Gupta To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , , Nipun Gupta Subject: [PATCH v10 3/7] dt-bindings: bus: add CDX bus controller for versal net Date: Mon, 13 Mar 2023 18:56:32 +0530 Message-ID: <20230313132636.31850-4-nipun.gupta@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230313132636.31850-1-nipun.gupta@amd.com> References: <20230313132636.31850-1-nipun.gupta@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT014:EE_|DM4PR12MB6445:EE_ X-MS-Office365-Filtering-Correlation-Id: 4375809d-eafb-4430-9117-08db23c6a83e X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB03.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230025)(4636009)(396003)(376002)(39860400002)(346002)(136003)(451199018)(40470700004)(46966006)(36840700001)(82740400003)(426003)(36860700001)(82310400005)(356005)(921005)(2906002)(70206006)(41300700001)(8676002)(70586007)(40480700001)(40460700003)(4326008)(478600001)(316002)(36756003)(86362001)(54906003)(110136005)(81166007)(966005)(47076005)(5660300002)(44832011)(26005)(2616005)(336012)(186003)(7416002)(7406005)(1076003)(6666004)(8936002)(83380400001)(83996005)(2101003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Mar 2023 13:27:13.5757 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4375809d-eafb-4430-9117-08db23c6a83e X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT014.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM4PR12MB6445 Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org Add CDX bus controller device tree bindings for versal-net devices. Signed-off-by: Nipun Gupta Reviewed-by: Rob Herring Reviewed-by: Pieter Jansen van Vuuren Tested-by: Nikhil Agarwal --- .../bindings/bus/xlnx,versal-net-cdx.yaml | 82 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 83 insertions(+) create mode 100644 Documentation/devicetree/bindings/bus/xlnx,versal-net-cdx.yaml diff --git a/Documentation/devicetree/bindings/bus/xlnx,versal-net-cdx.yaml b/Documentation/devicetree/bindings/bus/xlnx,versal-net-cdx.yaml new file mode 100644 index 000000000000..7f62ffbdc245 --- /dev/null +++ b/Documentation/devicetree/bindings/bus/xlnx,versal-net-cdx.yaml @@ -0,0 +1,82 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/bus/xlnx,versal-net-cdx.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: AMD CDX bus controller + +description: | + CDX bus controller for AMD devices is implemented to dynamically + detect CDX bus and devices using the firmware. + The CDX bus manages multiple FPGA based hardware devices, which + can support network, crypto or any other specialized type of + devices. These FPGA based devices can be added/modified dynamically + on run-time. + + All devices on the CDX bus will have a unique streamid (for IOMMU) + and a unique device ID (for MSI) corresponding to a requestor ID + (one to one associated with the device). The streamid and deviceid + are used to configure SMMU and GIC-ITS respectively. + + iommu-map property is used to define the set of stream ids + corresponding to each device and the associated IOMMU. + + The MSI writes are accompanied by sideband data (Device ID). + The msi-map property is used to associate the devices with the + device ID as well as the associated ITS controller. + + rproc property (xlnx,rproc) is used to identify the remote processor + with which APU (Application Processor Unit) interacts to find out + the bus and device configuration. + +maintainers: + - Nipun Gupta + - Nikhil Agarwal + +properties: + compatible: + const: xlnx,versal-net-cdx + + iommu-map: true + + msi-map: true + + xlnx,rproc: + $ref: /schemas/types.yaml#/definitions/phandle + description: + phandle to the remoteproc_r5 rproc node using which APU interacts + with remote processor. + + ranges: true + + "#address-cells": + enum: [1, 2] + + "#size-cells": + enum: [1, 2] + +required: + - compatible + - iommu-map + - msi-map + - xlnx,rproc + - ranges + - "#address-cells" + - "#size-cells" + +additionalProperties: false + +examples: + - | + cdx { + compatible = "xlnx,versal-net-cdx"; + #address-cells = <1>; + #size-cells = <1>; + /* define map for RIDs 250-259 */ + iommu-map = <250 &smmu 250 10>; + /* define msi map for RIDs 250-259 */ + msi-map = <250 &its 250 10>; + xlnx,rproc = <&remoteproc_r5>; + ranges; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 16b42c22902b..82b2c5534e1f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -968,6 +968,7 @@ AMD CDX BUS DRIVER M: Nipun Gupta M: Nikhil Agarwal S: Maintained +F: Documentation/devicetree/bindings/bus/xlnx,versal-net-cdx.yaml F: drivers/cdx/* F: include/linux/cdx/*