From patchwork Tue Feb 14 21:23:03 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elliot Berman X-Patchwork-Id: 13140832 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 C3A6EC64EC7 for ; Tue, 14 Feb 2023 21:24:30 +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=vq72fnsUbTEBF2eBiiMypAymND/KLyNM39YpajihsMI=; b=o2zw1Hczz4mDez th3fwE+hjmpGskhgLNXxRAtE4JFB3k5B/MYriLkaD0ZI0e2y2/vrhmFT0WmuoFXh93TqgRM6vm/Pt f5SLQSD61I1x5nbhO8kIunR4Wz1XAjj/qvKO5vS2h6dz68Mabm2FFOSmNykNIktwfyl/LNSyv5fGi 0KYMFc5b6PzbpB6raViDtSbvjG2Pxvwozt8BwMouviDRFXFyrDNFQ7MzgiipuJRjch/W+OvTe9Fnt fsn9rRL90YJN0HMGfD0W5ryzRFJCWAX2qixEXLOkhh1Ga44ZnRGx2jPqRejiVtCCZyjccd58bYaVH ayhPn8c9yRa+Z+gYLVAg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pS2lu-003Vpv-Ux; Tue, 14 Feb 2023 21:23:31 +0000 Received: from mx0b-0031df01.pphosted.com ([205.220.180.131]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pS2ls-003Vp9-6B for linux-arm-kernel@lists.infradead.org; Tue, 14 Feb 2023 21:23:29 +0000 Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 31EK86Dd004129; Tue, 14 Feb 2023 21:23:17 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=qcppdkim1; bh=RZZgoXchdGzg22qaEsGNOeO06XikKGMy+Ruu2BDs+Os=; b=i/kjE6q7pUrCouZFYDAv4d8rk/VGWtjicnERvYkOE7/2To9G3F486TsfbPngoCjKmfeL wSGBRsz69VIh7fXGrVlaYnSQDl/ZJ1e7ewsr8IYImyfIFP9oFxnv0oQ13tPa1jCgVLvf zS9Kot28ilru7eeqKI68RQ6Jcppq/+xSSpCpdqaUWMSyxv3mDhU4IhZDXBruo8VyChfe DeMRNWliaxHOIm8r6borSqbQOjoRQ5im1ujGhdsp0MmmrQIPQXqCEnm80wFnKAvlt5Is 6hvfzieAew834dvvSa0faiNrwiUb19+14IFSwBMOIK0jY1TwyDtbtM/bp6hEkyclLUrU pA== Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3nr20vtkbw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 14 Feb 2023 21:23:16 +0000 Received: from nasanex01b.na.qualcomm.com (nasanex01b.na.qualcomm.com [10.46.141.250]) by NASANPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 31ELNFWP006486 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 14 Feb 2023 21:23:15 GMT 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 15.2.986.36; Tue, 14 Feb 2023 13:23:14 -0800 From: Elliot Berman To: Alex Elder , Srinivas Kandagatla , Elliot Berman , Prakruthi Deepak Heragu , Catalin Marinas , Will Deacon CC: Murali Nalajala , Trilok Soni , Srivatsa Vaddagiri , Carl van Schaik , Dmitry Baryshkov , Bjorn Andersson , "Konrad Dybcio" , Arnd Bergmann , "Greg Kroah-Hartman" , Rob Herring , Krzysztof Kozlowski , Jonathan Corbet , Bagas Sanjaya , Jassi Brar , , , , , Subject: [PATCH v10 06/26] virt: gunyah: msgq: Add hypercalls to send and receive messages Date: Tue, 14 Feb 2023 13:23:03 -0800 Message-ID: <20230214212303.3307536-1-quic_eberman@quicinc.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230214211229.3239350-1-quic_eberman@quicinc.com> References: <20230214211229.3239350-1-quic_eberman@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.49.16.6] X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: ciJ-F7i89QvW8o-lBdTRdBsAZTDiH2bt X-Proofpoint-GUID: ciJ-F7i89QvW8o-lBdTRdBsAZTDiH2bt X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.170.22 definitions=2023-02-14_15,2023-02-14_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 mlxlogscore=999 priorityscore=1501 malwarescore=0 clxscore=1015 bulkscore=0 impostorscore=0 spamscore=0 adultscore=0 phishscore=0 suspectscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302140183 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230214_132328_368427_D8DFF9AE X-CRM114-Status: GOOD ( 16.49 ) 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 Add hypercalls to send and receive messages on a Gunyah message queue. Signed-off-by: Elliot Berman --- arch/arm64/gunyah/gunyah_hypercall.c | 32 ++++++++++++++++++++++++++++ include/linux/gunyah.h | 7 ++++++ 2 files changed, 39 insertions(+) diff --git a/arch/arm64/gunyah/gunyah_hypercall.c b/arch/arm64/gunyah/gunyah_hypercall.c index f30d06ee80cf..2ca9ab098ff6 100644 --- a/arch/arm64/gunyah/gunyah_hypercall.c +++ b/arch/arm64/gunyah/gunyah_hypercall.c @@ -38,6 +38,8 @@ EXPORT_SYMBOL_GPL(arch_is_gunyah_guest); fn) #define GH_HYPERCALL_HYP_IDENTIFY GH_HYPERCALL(0x8000) +#define GH_HYPERCALL_MSGQ_SEND GH_HYPERCALL(0x801B) +#define GH_HYPERCALL_MSGQ_RECV GH_HYPERCALL(0x801C) /** * gh_hypercall_hyp_identify() - Returns build information and feature flags @@ -57,5 +59,35 @@ void gh_hypercall_hyp_identify(struct gh_hypercall_hyp_identify_resp *hyp_identi } EXPORT_SYMBOL_GPL(gh_hypercall_hyp_identify); +enum gh_error gh_hypercall_msgq_send(u64 capid, size_t size, uintptr_t buff, int tx_flags, + bool *ready) +{ + struct arm_smccc_res res; + + arm_smccc_1_1_hvc(GH_HYPERCALL_MSGQ_SEND, capid, size, buff, tx_flags, 0, &res); + + if (res.a0 == GH_ERROR_OK) + *ready = res.a1; + + return res.a0; +} +EXPORT_SYMBOL_GPL(gh_hypercall_msgq_send); + +enum gh_error gh_hypercall_msgq_recv(u64 capid, uintptr_t buff, size_t size, size_t *recv_size, + bool *ready) +{ + struct arm_smccc_res res; + + arm_smccc_1_1_hvc(GH_HYPERCALL_MSGQ_RECV, capid, buff, size, 0, &res); + + if (res.a0 == GH_ERROR_OK) { + *recv_size = res.a1; + *ready = res.a2; + } + + return res.a0; +} +EXPORT_SYMBOL_GPL(gh_hypercall_msgq_recv); + MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Gunyah Hypervisor Hypercalls"); diff --git a/include/linux/gunyah.h b/include/linux/gunyah.h index 3fef2854c5e1..cb6df4eec5c2 100644 --- a/include/linux/gunyah.h +++ b/include/linux/gunyah.h @@ -112,4 +112,11 @@ struct gh_hypercall_hyp_identify_resp { void gh_hypercall_hyp_identify(struct gh_hypercall_hyp_identify_resp *hyp_identity); +#define GH_HYPERCALL_MSGQ_TX_FLAGS_PUSH BIT(0) + +enum gh_error gh_hypercall_msgq_send(u64 capid, size_t size, uintptr_t buff, int tx_flags, + bool *ready); +enum gh_error gh_hypercall_msgq_recv(u64 capid, uintptr_t buff, size_t size, size_t *recv_size, + bool *ready); + #endif