From patchwork Mon Aug 1 21:12:31 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elliot Berman X-Patchwork-Id: 12934051 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B6DB1C3F6B0 for ; Mon, 1 Aug 2022 21:15:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=OeQ42FdwsnLdC7MpiIcGYNa4mh+lLb34pgLKwTXEnNg=; b=sUVMfEc60N7dI/ b3GzrgVCl88E/pKzDb4kjMBb4/hQnCfEZbaPDnDmJMj+EHjnoRkDTtg/9RwtRSes0E37SED+N72Y7 rhU70/P8XFJvK6ue/jIlXVFw4ECxH+U8FLzLDvjccx0vTjsfn1KJWNEkcNP4Q2s723diUPkX89nBL 5i1xDPcZjfoaNRBBoduC3e+95xqVcRAn6+ure02QmUd1AZaQ7l2scDfpVUGN8wWqR+OT+Bktvo1Os JGuVVsgdwDnRGzoVZDxy+2XbnZqq406xWaI2EJAsQpNDU35/GgF7FdylvxVP99r4keD3ailIL6lwq MyDA1LM5HenXB4M2C9vQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oIck6-00AhSL-71; Mon, 01 Aug 2022 21:14:26 +0000 Received: from alexa-out-sd-01.qualcomm.com ([199.106.114.38]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oIcji-00Ah8U-CL for linux-arm-kernel@lists.infradead.org; Mon, 01 Aug 2022 21:14:05 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1659388442; x=1690924442; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=vIfmWBafylqnlRoEuinALPR3jmyroFOxK4aJ7M4ecys=; b=XDEg3iAGJZ0nVlwu2CptK3ainxwtohxQEidRSyG9TfXCsX8UnF0KvmaU gNFbPMnbOEqYAEOA8puQIq32QCkZeYXAeHB/ecn8LcCgyxM/WTPJgGTvh wC0L+R1Arc3tMEv1eWfU8UPHLqYKMzDXwNikeXt9Ih+wfwjHpYVogaaQ+ s=; Received: from unknown (HELO ironmsg02-sd.qualcomm.com) ([10.53.140.142]) by alexa-out-sd-01.qualcomm.com with ESMTP; 01 Aug 2022 14:13:57 -0700 X-QCInternal: smtphost Received: from nasanex01b.na.qualcomm.com ([10.46.141.250]) by ironmsg02-sd.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Aug 2022 14:13:56 -0700 Received: from hu-eberman-lv.qualcomm.com (10.49.16.6) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.22; Mon, 1 Aug 2022 14:13:56 -0700 From: Elliot Berman To: Bjorn Andersson , Rob Herring , Krzysztof Kozlowski , CC: Elliot Berman , Murali Nalajala , Trilok Soni , "Srivatsa Vaddagiri" , Carl van Schaik , Andy Gross , , Lorenzo Pieralisi , Sudeep Holla , "Marc Zyngier" , Jonathan Corbet , Will Deacon , Catalin Marinas , , Subject: [PATCH v2 02/11] dt-bindings: Add binding for gunyah hypervisor Date: Mon, 1 Aug 2022 14:12:31 -0700 Message-ID: <20220801211240.597859-3-quic_eberman@quicinc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220801211240.597859-1-quic_eberman@quicinc.com> References: <20220801211240.597859-1-quic_eberman@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01c.na.qualcomm.com (10.47.97.35) To nasanex01b.na.qualcomm.com (10.46.141.250) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220801_141402_496957_69A23160 X-CRM114-Status: GOOD ( 17.78 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org When Linux is booted as a guest under the Gunyah hypervisor, Gunyah applies a devicetree overlay describing the virtual platform configuration of the guest VM, such as the message queue capability IDs for communicating with the Resource Manager. Add the DT bindings that Gunyah adheres for the hypervisor node and message queues. Signed-off-by: Elliot Berman --- .../bindings/firmware/gunyah-hypervisor.yaml | 84 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 85 insertions(+) create mode 100644 Documentation/devicetree/bindings/firmware/gunyah-hypervisor.yaml diff --git a/Documentation/devicetree/bindings/firmware/gunyah-hypervisor.yaml b/Documentation/devicetree/bindings/firmware/gunyah-hypervisor.yaml new file mode 100644 index 000000000000..e50d932e768c --- /dev/null +++ b/Documentation/devicetree/bindings/firmware/gunyah-hypervisor.yaml @@ -0,0 +1,84 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/firmware/gunyah-hypervisor.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Gunyah Hypervisor + +maintainers: + - Murali Nalajala + - Elliot Berman + +description: |+ + On systems which support devicetree, Gunyah generates and overlays a deviceetree overlay which + describes the basic configuration of the hypervisor. Virtual machines use this information for + initial discovery that they are running as a Gunyah guest VM. + See also: https://github.com/quic/gunyah-resource-manager/blob/develop/src/vm_creation/dto_construct.c + +properties: + compatible: + oneOf: + - items: + - const: gunyah-hypervisor-1.0 + - const: gunyah-hypervisor + + "#address-cells": + description: Number of cells needed to represent 64-bit capability IDs. + const: 2 + "#size-cells": + description: must be 0, because capability IDs are not memory address + ranges and do not have a size. + const: 0 + +patternProperties: + "^gunyah-resource-mgr(@.*)?": + type: object + description: + Resource Manager node which is required to communicate to Resource + Manager VM using Gunyah Message Queues. + + properties: + compatible: + oneOf: + - items: + - const: gunyah-resource-manager-1-0 + - const: gunyah-resource-manager + reg: + items: + - description: Gunyah capability ID of the TX message queue + - description: Gunyah capability ID of the RX message queue + interrupts: + items: + - description: Interrupt for the TX message queue + - description: Interrupt for the RX message queue + additionalProperties: false + required: + - compatible + - reg + - interrupts + +additionalProperties: false + +required: + - compatible + - "#address-cells" + - "#size-cells" + +examples: + - | + #include + + hypervisor { + #address-cells = <2>; + #size-cells = <0>; + compatible = "gunyah-hypervisor-1.0", "gunyah-hypervisor"; + + gunyah-resource-mgr@1 { + compatible = "gunyah-resource-manager-1-0", "gunyah-resource-manager"; + interrupts = , /* TX full IRQ */ + ; /* RX empty IRQ */ + reg = <0x00000000 0x00000000>, <0x00000000 0x00000001>; + /* TX, RX cap ids */ + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index 18fb034526e1..0cd12ea6c11c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8741,6 +8741,7 @@ M: Elliot Berman M: Murali Nalajala L: linux-arm-msm@vger.kernel.org S: Maintained +F: Documentation/devicetree/bindings/firmware/gunyah-hypervisor.yaml F: Documentation/virt/gunyah/ HABANALABS PCI DRIVER