From patchwork Tue May 9 20:47:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elliot Berman X-Patchwork-Id: 680260 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id D94A5C77B7C for ; Tue, 9 May 2023 20:51:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235484AbjEIUv3 (ORCPT ); Tue, 9 May 2023 16:51:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41162 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235613AbjEIUuz (ORCPT ); Tue, 9 May 2023 16:50:55 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D6254526F; Tue, 9 May 2023 13:49:49 -0700 (PDT) Received: from pps.filterd (m0279871.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 349JOwUP005465; Tue, 9 May 2023 20:49:26 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=gq8sFae/gLJSVbiNgJt9dV5xtlaSoQW/JFJ5Xx4FpYo=; b=AhCsBqZv3RVleSZbdIpWc3VoKpylrvW3+ldwnjQFVHYqeHXB2dXMb5TBHLHV2rSlY5S8 /tk+wmv82ibJLYs1qAEFJdxQ7KmrSTj1rtDeF4rySntrOggdY3IgxHqa6Q7G+vMWjeQ8 oV6H+XQWxZGlK+2iybWadzRmyUG3i5u9D/bLRLuyl58aOhTz699VMLVB1O0uc+y3TPYH lGx71bo7jlbCxMiAKdYHCbbMCFH35hRuUB+f/fwYUKCZg/kfImzogDKUV1Immqn/hNNC pZak0ltCJgNX4kGWR0ktiOWU27LTGZTBHxS4myB++X7UqdmnqwNfwyMb0IKuB+8G+PSA Dg== Received: from nasanppmta02.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3qf785atb4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 09 May 2023 20:49:25 +0000 Received: from nasanex01b.na.qualcomm.com (nasanex01b.na.qualcomm.com [10.46.141.250]) by NASANPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 349KnOPU030166 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 9 May 2023 20:49:24 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 15.2.986.42; Tue, 9 May 2023 13:49:23 -0700 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 , Andy Gross , Jassi Brar , , , , , Subject: [PATCH v13 21/24] virt: gunyah: Add hypercalls for sending doorbell Date: Tue, 9 May 2023 13:47:58 -0700 Message-ID: <20230509204801.2824351-22-quic_eberman@quicinc.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230509204801.2824351-1-quic_eberman@quicinc.com> References: <20230509204801.2824351-1-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-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: Bv3KZ-_M3hfITYPBfKGfGPOTq4AdYQ4I X-Proofpoint-GUID: Bv3KZ-_M3hfITYPBfKGfGPOTq4AdYQ4I X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-05-09_13,2023-05-05_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 phishscore=0 bulkscore=0 adultscore=0 priorityscore=1501 mlxlogscore=825 lowpriorityscore=0 malwarescore=0 mlxscore=0 impostorscore=0 clxscore=1015 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2304280000 definitions=main-2305090171 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Gunyah doorbells allow two virtual machines to signal each other using interrupts. Add the hypercalls needed to assert the interrupt. Signed-off-by: Elliot Berman Reviewed-by: Alex Elder --- arch/arm64/gunyah/gunyah_hypercall.c | 25 +++++++++++++++++++++++++ include/linux/gunyah.h | 3 +++ 2 files changed, 28 insertions(+) diff --git a/arch/arm64/gunyah/gunyah_hypercall.c b/arch/arm64/gunyah/gunyah_hypercall.c index 5f33f53e05a9..3d48c8650851 100644 --- a/arch/arm64/gunyah/gunyah_hypercall.c +++ b/arch/arm64/gunyah/gunyah_hypercall.c @@ -33,6 +33,8 @@ EXPORT_SYMBOL_GPL(arch_is_gh_guest); fn) #define GH_HYPERCALL_HYP_IDENTIFY GH_HYPERCALL(0x8000) +#define GH_HYPERCALL_BELL_SEND GH_HYPERCALL(0x8012) +#define GH_HYPERCALL_BELL_SET_MASK GH_HYPERCALL(0x8015) #define GH_HYPERCALL_MSGQ_SEND GH_HYPERCALL(0x801B) #define GH_HYPERCALL_MSGQ_RECV GH_HYPERCALL(0x801C) #define GH_HYPERCALL_VCPU_RUN GH_HYPERCALL(0x8065) @@ -55,6 +57,29 @@ 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_bell_send(u64 capid, u64 new_flags, u64 *old_flags) +{ + struct arm_smccc_res res; + + arm_smccc_1_1_hvc(GH_HYPERCALL_BELL_SEND, capid, new_flags, 0, &res); + + if (res.a0 == GH_ERROR_OK && old_flags) + *old_flags = res.a1; + + return res.a0; +} +EXPORT_SYMBOL_GPL(gh_hypercall_bell_send); + +enum gh_error gh_hypercall_bell_set_mask(u64 capid, u64 enable_mask, u64 ack_mask) +{ + struct arm_smccc_res res; + + arm_smccc_1_1_hvc(GH_HYPERCALL_BELL_SET_MASK, capid, enable_mask, ack_mask, 0, &res); + + return res.a0; +} +EXPORT_SYMBOL_GPL(gh_hypercall_bell_set_mask); + enum gh_error gh_hypercall_msgq_send(u64 capid, size_t size, void *buff, u64 tx_flags, bool *ready) { struct arm_smccc_res res; diff --git a/include/linux/gunyah.h b/include/linux/gunyah.h index cd5704a82c6a..1f1685518bf3 100644 --- a/include/linux/gunyah.h +++ b/include/linux/gunyah.h @@ -171,6 +171,9 @@ static inline u16 gh_api_version(const struct gh_hypercall_hyp_identify_resp *gh void gh_hypercall_hyp_identify(struct gh_hypercall_hyp_identify_resp *hyp_identity); +enum gh_error gh_hypercall_bell_send(u64 capid, u64 new_flags, u64 *old_flags); +enum gh_error gh_hypercall_bell_set_mask(u64 capid, u64 enable_mask, u64 ack_mask); + #define GH_HYPERCALL_MSGQ_TX_FLAGS_PUSH BIT(0) enum gh_error gh_hypercall_msgq_send(u64 capid, size_t size, void *buff, u64 tx_flags, bool *ready);