From patchwork Wed Jul 20 17:45:51 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Michael S. Tsirkin" X-Patchwork-Id: 9240207 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 B42596077C for ; Wed, 20 Jul 2016 18:12:47 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A7A2D27CF9 for ; Wed, 20 Jul 2016 18:12:47 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9B3F527D29; Wed, 20 Jul 2016 18:12:47 +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=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 4507327C26 for ; Wed, 20 Jul 2016 18:12:47 +0000 (UTC) Received: from localhost ([::1]:36206 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bPvzC-0001aD-3h for patchwork-qemu-devel@patchwork.kernel.org; Wed, 20 Jul 2016 14:12:46 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:47703) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bPvZK-0004Ta-0B for qemu-devel@nongnu.org; Wed, 20 Jul 2016 13:46:03 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bPvZE-0007et-VF for qemu-devel@nongnu.org; Wed, 20 Jul 2016 13:46:01 -0400 Received: from mx1.redhat.com ([209.132.183.28]:57342) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bPvZE-0007eg-P9 for qemu-devel@nongnu.org; Wed, 20 Jul 2016 13:45:56 -0400 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 4DC8B7733B; Wed, 20 Jul 2016 17:45:56 +0000 (UTC) Received: from redhat.com (vpn1-4-183.ams2.redhat.com [10.36.4.183]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with SMTP id u6KHjpCi030009; Wed, 20 Jul 2016 13:45:53 -0400 Date: Wed, 20 Jul 2016 20:45:51 +0300 From: "Michael S. Tsirkin" To: qemu-devel@nongnu.org Message-ID: <1469036440-4562-19-git-send-email-mst@redhat.com> References: <1469036440-4562-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1469036440-4562-1-git-send-email-mst@redhat.com> X-Mutt-Fcc: =sent X-Scanned-By: MIMEDefang 2.68 on 10.5.11.24 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Wed, 20 Jul 2016 17:45:56 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL v3 18/55] intel_iommu: handle interrupt remap enable X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Richard Henderson , Eduardo Habkost , Peter Xu , Paolo Bonzini Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Peter Xu Handle writting to IRE bit in global command register. Signed-off-by: Peter Xu Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/i386/intel_iommu.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index bf74533..6a6cb3b 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -1183,6 +1183,22 @@ static void vtd_handle_gcmd_te(IntelIOMMUState *s, bool en) } } +/* Handle Interrupt Remap Enable/Disable */ +static void vtd_handle_gcmd_ire(IntelIOMMUState *s, bool en) +{ + VTD_DPRINTF(CSR, "Interrupt Remap Enable %s", (en ? "on" : "off")); + + if (en) { + s->intr_enabled = true; + /* Ok - report back to driver */ + vtd_set_clear_mask_long(s, DMAR_GSTS_REG, 0, VTD_GSTS_IRES); + } else { + s->intr_enabled = false; + /* Ok - report back to driver */ + vtd_set_clear_mask_long(s, DMAR_GSTS_REG, VTD_GSTS_IRES, 0); + } +} + /* Handle write to Global Command Register */ static void vtd_handle_gcmd_write(IntelIOMMUState *s) { @@ -1207,6 +1223,10 @@ static void vtd_handle_gcmd_write(IntelIOMMUState *s) /* Set/update the interrupt remapping root-table pointer */ vtd_handle_gcmd_sirtp(s); } + if (changed & VTD_GCMD_IRE) { + /* Interrupt remap enable/disable */ + vtd_handle_gcmd_ire(s, val & VTD_GCMD_IRE); + } } /* Handle write to Context Command Register */