From patchwork Wed Oct 5 13:06:54 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?UmFkaW0gS3LEjW3DocWZ?= X-Patchwork-Id: 9362899 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 449E86075E for ; Wed, 5 Oct 2016 13:11:17 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3698C28696 for ; Wed, 5 Oct 2016 13:11:17 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2B3FF286CB; Wed, 5 Oct 2016 13:11:17 +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=-5.9 required=2.0 tests=BAYES_00,HK_RANDOM_FROM, 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 C39E728696 for ; Wed, 5 Oct 2016 13:11:16 +0000 (UTC) Received: from localhost ([::1]:49057 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1brlyd-00057n-SL for patchwork-qemu-devel@patchwork.kernel.org; Wed, 05 Oct 2016 09:11:15 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:40620) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1brlut-0002Ij-6C for qemu-devel@nongnu.org; Wed, 05 Oct 2016 09:07:29 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1brlup-0004fb-Te for qemu-devel@nongnu.org; Wed, 05 Oct 2016 09:07:23 -0400 Received: from mx1.redhat.com ([209.132.183.28]:54906) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1brlup-0004f1-Jy for qemu-devel@nongnu.org; Wed, 05 Oct 2016 09:07:19 -0400 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) (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 26594C05ACAC; Wed, 5 Oct 2016 13:07:19 +0000 (UTC) Received: from potion (dhcp-1-247.brq.redhat.com [10.34.1.247]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with SMTP id u95D7Gxo010429; Wed, 5 Oct 2016 09:07:16 -0400 Received: by potion (sSMTP sendmail emulation); Wed, 05 Oct 2016 15:07:15 +0200 From: =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= To: qemu-devel@nongnu.org Date: Wed, 5 Oct 2016 15:06:54 +0200 Message-Id: <20161005130657.3399-6-rkrcmar@redhat.com> In-Reply-To: <20161005130657.3399-1-rkrcmar@redhat.com> References: <20161005130657.3399-1-rkrcmar@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.68 on 10.5.11.26 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Wed, 05 Oct 2016 13:07:19 +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] [PATCH v4 5/8] intel_iommu: add OnOffAuto intr_eim as "eim" property 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: Eduardo Habkost , "Michael S. Tsirkin" , Peter Xu , Paolo Bonzini , Igor Mammedov , Richard Henderson Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP The default (auto) emulates the current behavior. A user can now control EIM like -device intel-iommu,intremap=on,eim=off Reviewed-by: Igor Mammedov Signed-off-by: Radim Krčmář Reviewed-by: Peter Xu --- v4: * r-b Igor * added an example to the commit message v3: * use error_setg [Paolo] * shorten the code [Peter] --- hw/i386/intel_iommu.c | 24 +++++++++++++++++++++--- include/hw/i386/intel_iommu.h | 1 + 2 files changed, 22 insertions(+), 3 deletions(-) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 5b06b4091f36..17892b8c336b 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -2012,6 +2012,8 @@ static const MemoryRegionOps vtd_mem_ops = { static Property vtd_properties[] = { DEFINE_PROP_UINT32("version", IntelIOMMUState, version, 0), + DEFINE_PROP_ON_OFF_AUTO("eim", IntelIOMMUState, intr_eim, + ON_OFF_AUTO_AUTO), DEFINE_PROP_END_OF_LIST(), }; @@ -2368,7 +2370,11 @@ static void vtd_init(IntelIOMMUState *s) s->ecap = VTD_ECAP_QI | VTD_ECAP_IRO; if (x86_iommu->intr_supported) { - s->ecap |= VTD_ECAP_IR | VTD_ECAP_EIM | VTD_ECAP_MHMV; + s->ecap |= VTD_ECAP_IR | VTD_ECAP_MHMV; + if (s->intr_eim == ON_OFF_AUTO_ON) { + s->ecap |= VTD_ECAP_EIM; + } + assert(s->intr_eim != ON_OFF_AUTO_AUTO); } vtd_reset_context_cache(s); @@ -2449,8 +2455,10 @@ static AddressSpace *vtd_host_dma_iommu(PCIBus *bus, void *opaque, int devfn) return &vtd_as->as; } -static bool vtd_check_config(X86IOMMUState *x86_iommu, Error **errp) +static bool vtd_decide_config(IntelIOMMUState *s, Error **errp) { + X86IOMMUState *x86_iommu = X86_IOMMU_DEVICE(s); + /* Currently Intel IOMMU IR only support "kernel-irqchip={off|split}" */ if (x86_iommu->intr_supported && kvm_irqchip_in_kernel() && !kvm_irqchip_is_split()) { @@ -2458,6 +2466,16 @@ static bool vtd_check_config(X86IOMMUState *x86_iommu, Error **errp) "kernel-irqchip=on, please use 'split|off'."); return false; } + if (s->intr_eim == ON_OFF_AUTO_ON && !x86_iommu->intr_supported) { + error_setg(errp, "eim=on cannot be selected without intremap=on"); + return false; + } + + if (s->intr_eim == ON_OFF_AUTO_AUTO) { + s->intr_eim = x86_iommu->intr_supported ? + ON_OFF_AUTO_ON : ON_OFF_AUTO_OFF; + } + return true; } @@ -2471,7 +2489,7 @@ static void vtd_realize(DeviceState *dev, Error **errp) VTD_DPRINTF(GENERAL, ""); x86_iommu->type = TYPE_INTEL; - if (!vtd_check_config(x86_iommu, errp)) { + if (!vtd_decide_config(s, errp)) { return; } diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h index a42dbd745a70..b5ac60927b1f 100644 --- a/include/hw/i386/intel_iommu.h +++ b/include/hw/i386/intel_iommu.h @@ -289,6 +289,7 @@ struct IntelIOMMUState { dma_addr_t intr_root; /* Interrupt remapping table pointer */ uint32_t intr_size; /* Number of IR table entries */ bool intr_eime; /* Extended interrupt mode enabled */ + OnOffAuto intr_eim; /* Toggle for EIM cabability */ }; /* Find the VTD Address space associated with the given bus pointer,