From patchwork Mon Dec 19 22:58:47 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elliot Berman X-Patchwork-Id: 13077291 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 7F91CC4332F for ; Mon, 19 Dec 2022 23:24:55 +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=DKbB4+wX3N5lcvy6z3lLOjNFjLVthP8QlxsBAdzJEPE=; b=5BJFd6kpVMLI52 sPVEVx4cNTAZSOS/ngtL1p3EP3alSP+4K5joxnatdSW0CTzW7flX1A5uDQJzopjFclHkqFI0sIeaJ nDPQte6Tq4XAweM+JSXRlbuIOywOjAB293d14O1sZYEzRblFwLIWykQY1xXoOyiMVBwI2dNpEfbxD Z79vGfb8xGukFp6kbXVkBT+QBe3wBGc9WdZ4IeDrfeIZ0s7JtptBpmo9Khbt3HfKQ/EYDIXyPKRzj WGzRT1r3qmkFcD76IGquWRmctetMuZ9Veqm6V2IOmgtZxa4uuUKUhxl7UMN7qPNh9fHnHsO+LHry9 l6CCTmV5HsdOi7rmthcA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p7PTt-005067-NI; Mon, 19 Dec 2022 23:23:39 +0000 Received: from alexa-out-sd-02.qualcomm.com ([199.106.114.39]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1p7P7v-004oYt-2n for linux-arm-kernel@lists.infradead.org; Mon, 19 Dec 2022 23:01:02 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; i=@quicinc.com; q=dns/txt; s=qcdkim; t=1671490854; x=1703026854; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=iYweQv3PzZF7Arr6/aTL5AojEd8q8UfNKCO0tinlKwU=; b=ppmze9J7nOk/xPjFhtFBgh1QYKYoiDMxD0EgWejr10tHWT7ML987k21w erlZlmFzpi43UJn7NB5P8boXLfBaMW1oJWPyD19SklUjmFGX5UvRCjdxW B1yezSGMp5cuEH0LbCpB7tWiJ7DWjyD1Ol8i4oyEE3qK3VK3dmXFAQRxh A=; Received: from unknown (HELO ironmsg-SD-alpha.qualcomm.com) ([10.53.140.30]) by alexa-out-sd-02.qualcomm.com with ESMTP; 19 Dec 2022 15:00:54 -0800 X-QCInternal: smtphost Received: from nasanex01b.na.qualcomm.com ([10.46.141.250]) by ironmsg-SD-alpha.qualcomm.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Dec 2022 15:00:54 -0800 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; Mon, 19 Dec 2022 15:00:53 -0800 From: Elliot Berman To: Bjorn Andersson , Elliot Berman , Murali Nalajala , Catalin Marinas , Will Deacon CC: Trilok Soni , Srivatsa Vaddagiri , Carl van Schaik , Prakruthi Deepak Heragu , Arnd Bergmann , Greg Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Jonathan Corbet , "Bagas Sanjaya" , Jassi Brar , "Sudeep Holla" , Mark Rutland , "Lorenzo Pieralisi" , Dmitry Baryshkov , , , , , , Subject: [PATCH v8 26/28] virt: gunyah: Add hypercalls for sending doorbell Date: Mon, 19 Dec 2022 14:58:47 -0800 Message-ID: <20221219225850.2397345-27-quic_eberman@quicinc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221219225850.2397345-1-quic_eberman@quicinc.com> References: <20221219225850.2397345-1-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-20221219_150055_224650_B281F3A5 X-CRM114-Status: GOOD ( 12.52 ) 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 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 --- arch/arm64/gunyah/gunyah_hypercall.c | 27 +++++++++++++++++++++++++++ include/linux/gunyah.h | 3 +++ 2 files changed, 30 insertions(+) diff --git a/arch/arm64/gunyah/gunyah_hypercall.c b/arch/arm64/gunyah/gunyah_hypercall.c index dc42a4e6bd7c..00c5f91b96fd 100644 --- a/arch/arm64/gunyah/gunyah_hypercall.c +++ b/arch/arm64/gunyah/gunyah_hypercall.c @@ -26,6 +26,8 @@ GH_FN_ID(GH_CALL_TYPE_HYPERCALL, fn)) #define GH_HYPERCALL_HYP_IDENTIFY GH_HYPERCALL(0x0000) +#define GH_HYPERCALL_DBL_SEND GH_HYPERCALL(0x0012) +#define GH_HYPERCALL_DBL_SET_MASK GH_HYPERCALL(0x0015) #define GH_HYPERCALL_MSGQ_SEND GH_HYPERCALL(0x001B) #define GH_HYPERCALL_MSGQ_RECV GH_HYPERCALL(0x001C) #define GH_HYPERCALL_VCPU_RUN GH_HYPERCALL(0x0065) @@ -68,6 +70,31 @@ void gh_hypercall_hyp_identify(struct gh_hypercall_hyp_identify_resp *hyp_identi } EXPORT_SYMBOL_GPL(gh_hypercall_hyp_identify); +int gh_hypercall_dbl_send(u64 capid, u64 new_flags, u64 *old_flags) +{ + struct arm_smccc_res res; + + arm_smccc_1_1_hvc(GH_HYPERCALL_DBL_SEND, capid, new_flags, 0, &res); + + if (res.a0) + return res.a0; + + *old_flags = res.a1; + + return res.a0; +} +EXPORT_SYMBOL_GPL(gh_hypercall_dbl_send); + +int gh_hypercall_dbl_set_mask(u64 capid, u64 enable_mask, u64 ack_mask) +{ + struct arm_smccc_res res; + + arm_smccc_1_1_hvc(GH_HYPERCALL_DBL_SET_MASK, capid, enable_mask, ack_mask, 0, &res); + + return res.a0; +} +EXPORT_SYMBOL_GPL(gh_hypercall_dbl_set_mask); + int gh_hypercall_msgq_send(u64 capid, size_t size, uintptr_t buff, int tx_flags, bool *ready) { struct arm_smccc_res res; diff --git a/include/linux/gunyah.h b/include/linux/gunyah.h index 42160b4de834..2c2b498a792d 100644 --- a/include/linux/gunyah.h +++ b/include/linux/gunyah.h @@ -163,6 +163,9 @@ static inline u16 gh_api_version(void) void gh_hypercall_get_uid(u32 uid[4]); void gh_hypercall_hyp_identify(struct gh_hypercall_hyp_identify_resp *hyp_identity); +int gh_hypercall_dbl_send(u64 capid, u64 new_flags, u64 *old_flags); +int gh_hypercall_dbl_set_mask(u64 capid, u64 enable_mask, u64 ack_mask); + #define GH_HYPERCALL_MSGQ_TX_FLAGS_PUSH BIT(0) int gh_hypercall_msgq_send(u64 capid, size_t size, uintptr_t buff, int tx_flags, bool *ready);