From patchwork Wed Apr 5 23:19:12 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andre Przywara X-Patchwork-Id: 9665915 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id EED7060352 for ; Wed, 5 Apr 2017 23:23:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E0CD82816B for ; Wed, 5 Apr 2017 23:23:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D550B28584; Wed, 5 Apr 2017 23:23:25 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 666022816B for ; Wed, 5 Apr 2017 23:23:25 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cvuEg-0004zc-QW; Wed, 05 Apr 2017 23:21:10 +0000 Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cvuEf-0004xB-TF for xen-devel@lists.xenproject.org; Wed, 05 Apr 2017 23:21:09 +0000 Received: from [85.158.143.35] by server-1.bemta-6.messagelabs.com id 94/D7-27678-5EB75E85; Wed, 05 Apr 2017 23:21:09 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrMLMWRWlGSWpSXmKPExsVysyfVTfdJ9dM Igxf3ZC2+b5nM5MDocfjDFZYAxijWzLyk/IoE1ozJV5cxF0zmq/j97RFzA+MHri5GLg4hgU2M EufPH2OBcPYySqw98o69i5GTg01AV2LHzdfMILaIQKjEnJ+PgGwODmaBSonuRfwgYWEBc4kt1 6eAhVkEVCWOPmIBMXkF3CUOfvAFMSUE5CSu/EsAKeYEir5sBVnECbTITeLaxKksExi5FzAyrG LUKE4tKkst0jU01UsqykzPKMlNzMzRNTQw08tNLS5OTE/NSUwq1kvOz93ECPQsAxDsYPy2LOA QoyQHk5Ior4LPkwghvqT8lMqMxOKM+KLSnNTiQ4wyHBxKErw2VU8jhASLUtNTK9Iyc4AhBpOW 4OBREuG1AknzFhck5hZnpkOkTjEqSonz6oIkBEASGaV5cG2wsL7EKCslzMsIdIgQT0FqUW5mC ar8K0ZxDkYlYd4pIFN4MvNK4Ka/AlrMBLT4yZ2HIItLEhFSUg2Mfe+L/t5YUO340p//cs5Zqb q6PW/USvtemp54aJQ76cg37W0uFl5NB1UNZ7azq6clPwzMk+a+ke9zfPoN7T9/YvvFFu/62DC vcEZou+SxfPYdLS8kPBnN/tcvWN070aunTD13vv4cd+tvawLCNj4MW73qy85TBtu13qr/q/hx XonrL9/pvNLpSizFGYmGWsxFxYkAUzdlGGYCAAA= X-Env-Sender: andre.przywara@arm.com X-Msg-Ref: server-14.tower-21.messagelabs.com!1491434468!55788526!1 X-Originating-IP: [217.140.101.70] X-SpamReason: No, hits=0.0 required=7.0 tests= X-StarScan-Received: X-StarScan-Version: 9.4.12; banners=-,-,- X-VirusChecked: Checked Received: (qmail 44238 invoked from network); 5 Apr 2017 23:21:08 -0000 Received: from foss.arm.com (HELO foss.arm.com) (217.140.101.70) by server-14.tower-21.messagelabs.com with SMTP; 5 Apr 2017 23:21:08 -0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id C13D0344; Wed, 5 Apr 2017 16:21:07 -0700 (PDT) Received: from slackpad.lan (usa-sjc-mx-foss1.foss.arm.com [217.140.101.70]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 7E5053F4FF; Wed, 5 Apr 2017 16:21:06 -0700 (PDT) From: Andre Przywara To: Stefano Stabellini , Julien Grall Date: Thu, 6 Apr 2017 00:19:12 +0100 Message-Id: <1491434362-30310-21-git-send-email-andre.przywara@arm.com> X-Mailer: git-send-email 2.8.2 In-Reply-To: <1491434362-30310-1-git-send-email-andre.przywara@arm.com> References: <1491434362-30310-1-git-send-email-andre.przywara@arm.com> Cc: xen-devel@lists.xenproject.org, Shanker Donthineni , Vijay Kilari Subject: [Xen-devel] [PATCH v5 20/30] ARM: vITS: handle INT command X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP The INT command sets a given LPI identified by a DeviceID/EventID pair as pending and thus triggers it to be injected. Signed-off-by: Andre Przywara --- xen/arch/arm/vgic-v3-its.c | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/xen/arch/arm/vgic-v3-its.c b/xen/arch/arm/vgic-v3-its.c index 71bc08a..36f942a 100644 --- a/xen/arch/arm/vgic-v3-its.c +++ b/xen/arch/arm/vgic-v3-its.c @@ -319,6 +319,33 @@ static int its_handle_clear(struct virt_its *its, uint64_t *cmdptr) return 0; } +static int its_handle_int(struct virt_its *its, uint64_t *cmdptr) +{ + uint32_t devid = its_cmd_get_deviceid(cmdptr); + uint32_t eventid = its_cmd_get_id(cmdptr); + struct pending_irq *p; + struct vcpu *vcpu; + uint32_t vlpi; + + if ( !read_itte(its, devid, eventid, &vcpu, &vlpi) ) + return -1; + + p = its->d->arch.vgic.handler->lpi_to_pending(its->d, vlpi); + if ( !p ) + return -1; + + /* + * If the LPI is enabled, inject it. + * If not, store the pending state to inject it once it gets enabled later. + */ + if ( test_bit(GIC_IRQ_GUEST_ENABLED, &p->status) ) + vgic_vcpu_inject_irq(vcpu, vlpi); + else + set_bit(GIC_IRQ_GUEST_LPI_PENDING, &p->status); + + return 0; +} + #define ITS_CMD_BUFFER_SIZE(baser) ((((baser) & 0xff) + 1) << 12) /* @@ -350,6 +377,9 @@ static int vgic_its_handle_cmds(struct domain *d, struct virt_its *its) case GITS_CMD_CLEAR: ret = its_handle_clear(its, command); break; + case GITS_CMD_INT: + ret = its_handle_int(its, command); + break; case GITS_CMD_SYNC: /* We handle ITS commands synchronously, so we ignore SYNC. */ break;