From patchwork Sat Jul 4 11:36:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yi Liu X-Patchwork-Id: 11643489 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CBDE992A for ; Sat, 4 Jul 2020 11:33:19 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AD16F20885 for ; Sat, 4 Jul 2020 11:33:19 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AD16F20885 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:57460 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jrgQ2-0005iY-TY for patchwork-qemu-devel@patchwork.kernel.org; Sat, 04 Jul 2020 07:33:18 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52408) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jrgNG-0000WP-7u for qemu-devel@nongnu.org; Sat, 04 Jul 2020 07:30:26 -0400 Received: from mga05.intel.com ([192.55.52.43]:24797) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jrgNE-0004KM-8K for qemu-devel@nongnu.org; Sat, 04 Jul 2020 07:30:25 -0400 IronPort-SDR: 8p0V7SBC4TfMnBuY5bsEUYQPBTz3oH5mvW15sJuy7tpuyilvXBhrOawBGMySfyNF5N02vLMdsa NnvEqhs/HX4A== X-IronPort-AV: E=McAfee;i="6000,8403,9671"; a="232105519" X-IronPort-AV: E=Sophos;i="5.75,311,1589266800"; d="scan'208";a="232105519" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Jul 2020 04:30:16 -0700 IronPort-SDR: KfyhITJieKBUkJKVUi6IK5pBB4TJlEyGXvpQ/B54+8iTwPS6xcEgPE/wJGvWXSm2rgRaV0UfIS Hnf/+XYOFbtQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,311,1589266800"; d="scan'208";a="266146779" Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by fmsmga007.fm.intel.com with ESMTP; 04 Jul 2020 04:30:16 -0700 From: Liu Yi L To: qemu-devel@nongnu.org, alex.williamson@redhat.com, peterx@redhat.com Subject: [RFC v7 05/25] intel_iommu: add get_iommu_attr() callback Date: Sat, 4 Jul 2020 04:36:29 -0700 Message-Id: <1593862609-36135-6-git-send-email-yi.l.liu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1593862609-36135-1-git-send-email-yi.l.liu@intel.com> References: <1593862609-36135-1-git-send-email-yi.l.liu@intel.com> Received-SPF: pass client-ip=192.55.52.43; envelope-from=yi.l.liu@intel.com; helo=mga05.intel.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/07/04 07:30:14 X-ACL-Warn: Detected OS = FreeBSD 9.x or newer [fuzzy] X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jean-philippe@linaro.org, kevin.tian@intel.com, yi.l.liu@intel.com, Yi Sun , Eduardo Habkost , kvm@vger.kernel.org, mst@redhat.com, jun.j.tian@intel.com, eric.auger@redhat.com, yi.y.sun@intel.com, Jacob Pan , pbonzini@redhat.com, hao.wu@intel.com, jasowang@redhat.com, Richard Henderson , david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" Return vIOMMU attribute to caller. e.g. VFIO call via PCI layer. Cc: Kevin Tian Cc: Jacob Pan Cc: Peter Xu Cc: Yi Sun Cc: Paolo Bonzini Cc: Richard Henderson Cc: Eduardo Habkost Signed-off-by: Liu Yi L --- hw/i386/intel_iommu.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index ca6dcad..2d6748f 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -3441,6 +3441,28 @@ VTDAddressSpace *vtd_find_add_as(IntelIOMMUState *s, PCIBus *bus, int devfn) return vtd_dev_as; } +static int vtd_dev_get_iommu_attr(PCIBus *bus, void *opaque, int32_t devfn, + IOMMUAttr attr, void *data) +{ + int ret = 0; + + assert(0 <= devfn && devfn < PCI_DEVFN_MAX); + + switch (attr) { + case IOMMU_WANT_NESTING: + { + bool *pdata = data; + + /* return false until vSVA is ready */ + *pdata = false; + break; + } + default: + ret = -ENOENT; + } + return ret; +} + static uint64_t get_naturally_aligned_size(uint64_t start, uint64_t size, int gaw) { @@ -3736,6 +3758,7 @@ static AddressSpace *vtd_host_dma_iommu(PCIBus *bus, void *opaque, int devfn) static PCIIOMMUOps vtd_iommu_ops = { .get_address_space = vtd_host_dma_iommu, + .get_iommu_attr = vtd_dev_get_iommu_attr, }; static bool vtd_decide_config(IntelIOMMUState *s, Error **errp)