From patchwork Fri Mar 31 18:05:15 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andre Przywara X-Patchwork-Id: 9657103 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 91F4460350 for ; Fri, 31 Mar 2017 18:06:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 853A4286F1 for ; Fri, 31 Mar 2017 18:06:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7A1AF286F2; Fri, 31 Mar 2017 18:06:12 +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 2CDB8286B7 for ; Fri, 31 Mar 2017 18:06:12 +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 1cu0ts-0005gA-71; Fri, 31 Mar 2017 18:03:52 +0000 Received: from mail6.bemta6.messagelabs.com ([193.109.254.103]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cu0tq-0005YS-Cv for xen-devel@lists.xenproject.org; Fri, 31 Mar 2017 18:03:50 +0000 Received: from [193.109.254.147] by server-5.bemta-6.messagelabs.com id D7/B5-27545-60A9ED85; Fri, 31 Mar 2017 18:03:50 +0000 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrMLMWRWlGSWpSXmKPExsVysyfVTZd11r0 Ig3ldahbft0xmcmD0OPzhCksAYxRrZl5SfkUCa8aWiTkFW/gq5q75y9zAOJG7i5GLQ0hgM6PE l0ULmLsYOYGc5YwSrUdLQWw2AV2JHTdfg8VFBEIlni74DmRzcDALVEp0L+IHCQsLmEs82fEdr IRFQFXi3cWHrCA2r4CNxOsbp9hAbAkBOYmG8/fBajiB4vN3/WCFWGUt0fDpLvMERu4FjAyrGN WLU4vKUot0jfWSijLTM0pyEzNzdA0NzPRyU4uLE9NTcxKTivWS83M3MQI9ywAEOxg7/jkdYpT kYFIS5f1efC9CiC8pP6UyI7E4I76oNCe1+BCjDAeHkgRv4EygnGBRanpqRVpmDjDEYNISHDxK IrxSIGne4oLE3OLMdIjUKUZFKXFed5CEAEgiozQPrg0W1pcYZaWEeRmBDhHiKUgtys0sQZV/x SjOwagkzKsKMoUnM68EbvoroMVMQIstvt4FWVySiJCSamBcoBvr69NjMTGBLbP0mrDKI24RuQ SJn4vnyGnFCv8xvnhN+iLPyiZD1QtXghZeOywSmqxxsyVdc9UMxWNV+h+ucPZOvf6IV4Y35vS 9JTmxswyPr7dTjcrc+Pzhxnz+U3OlpWQeRbuU3tcvSUs+Ir7gj0xrlPRdx61rD23Qe7NApLnl 2zMByTtKLMUZiYZazEXFiQCMSG/9ZgIAAA== X-Env-Sender: andre.przywara@arm.com X-Msg-Ref: server-5.tower-27.messagelabs.com!1490983429!89445820!1 X-Originating-IP: [217.140.101.70] X-SpamReason: No, hits=0.0 required=7.0 tests= X-StarScan-Received: X-StarScan-Version: 9.2.3; banners=-,-,- X-VirusChecked: Checked Received: (qmail 25936 invoked from network); 31 Mar 2017 18:03:49 -0000 Received: from foss.arm.com (HELO foss.arm.com) (217.140.101.70) by server-5.tower-27.messagelabs.com with SMTP; 31 Mar 2017 18:03:49 -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 E4B5A15AD; Fri, 31 Mar 2017 11:03:48 -0700 (PDT) Received: from e104803-lin.lan (unknown [10.1.207.46]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id D86023F59A; Fri, 31 Mar 2017 11:03:47 -0700 (PDT) From: Andre Przywara To: Julien Grall , Stefano Stabellini Date: Fri, 31 Mar 2017 19:05:15 +0100 Message-Id: <20170331180525.30038-17-andre.przywara@arm.com> X-Mailer: git-send-email 2.9.0 In-Reply-To: <20170331180525.30038-1-andre.przywara@arm.com> References: <20170331180525.30038-1-andre.przywara@arm.com> Cc: xen-devel@lists.xenproject.org, Shanker Donthineni , Vijay Kilari Subject: [Xen-devel] [PATCH v3 16/26] 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 e49df30..c6a2e28 100644 --- a/xen/arch/arm/vgic-v3-its.c +++ b/xen/arch/arm/vgic-v3-its.c @@ -291,6 +291,33 @@ 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 = 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) static int vgic_its_handle_cmds(struct domain *d, struct virt_its *its, @@ -331,6 +358,9 @@ static int vgic_its_handle_cmds(struct domain *d, struct virt_its *its, case GITS_CMD_CLEAR: ret = its_handle_clear(its, cmdptr); break; + case GITS_CMD_INT: + ret = its_handle_int(its, cmdptr); + break; case GITS_CMD_SYNC: /* We handle ITS commands synchronously, so we ignore SYNC. */ break;