From nobody Mon Feb 9 05:41:58 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=intel.com ARC-Seal: i=1; a=rsa-sha256; t=1584880922; cv=none; d=zohomail.com; s=zohoarc; b=E2bnW95q/V67vtZIeY1AgFrngwpw8BN6LWxNb+blpNgrm03nJ/u5to3U7u+B4L3h4emp+ZnNczANpqTCwpKWYaqoTblvadAl8FLZVEUw8DjSA7G9k0s1B8GEjjQwn2hUNFwMhZJEFF2EgkCZcXkCu9jJbut/CSmAh+hsqa+oMYg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1584880922; h=Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:Message-ID:References:Sender:Subject:To; bh=M1AhHTnq1HfwUYvechYtfNytcPZGpFlcYZ46WBT0qaE=; b=XhXtnAjBqlWPa4OefHRcEVGpy6BGAn/EaqWLzXrVKDcH/N58yDFBc7ZghAsPKr4cgU556HVNX7RybfxOvjWKK67RDx7xcHOLvzqKqMiuT6xQAYhvh9u3xfGo89iY79xaxuUTfvP8Dc0jHj/ylPk6tQcp755CecxqpJPQ6QHktx0= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1584880922852183.9122266481695; Sun, 22 Mar 2020 05:42:02 -0700 (PDT) Received: from localhost ([::1]:46088 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jFzvV-0001ja-KU for importer@patchew.org; Sun, 22 Mar 2020 08:42:01 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:48070) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jFzl0-0001FP-6E for qemu-devel@nongnu.org; Sun, 22 Mar 2020 08:31:11 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jFzky-00040K-QC for qemu-devel@nongnu.org; Sun, 22 Mar 2020 08:31:10 -0400 Received: from mga02.intel.com ([134.134.136.20]:41767) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jFzky-0003tR-HA for qemu-devel@nongnu.org; Sun, 22 Mar 2020 08:31:08 -0400 Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Mar 2020 05:30:39 -0700 Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by orsmga008.jf.intel.com with ESMTP; 22 Mar 2020 05:30:38 -0700 IronPort-SDR: amio3fMC2hm2pmeWIOZ5mwre9RcSahs0wKI2jpemKL2qabWTftQ1p4SvqoH+X/KF6YbmSnPrCC HtU1p/u40tIg== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False IronPort-SDR: uyISaeauoF3ZdiNEazpdZiHyXFJZKy4My45lYzCdL0OBHulKrK8KPxReqjGlM7TNeqS0v74FGo AkG0VqI4jnIA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,292,1580803200"; d="scan'208";a="239664410" From: Liu Yi L To: qemu-devel@nongnu.org, alex.williamson@redhat.com, peterx@redhat.com Subject: [PATCH v1 19/22] intel_iommu: process PASID-based iotlb invalidation Date: Sun, 22 Mar 2020 05:36:16 -0700 Message-Id: <1584880579-12178-20-git-send-email-yi.l.liu@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1584880579-12178-1-git-send-email-yi.l.liu@intel.com> References: <1584880579-12178-1-git-send-email-yi.l.liu@intel.com> X-detected-operating-system: by eggs.gnu.org: FreeBSD 9.x [fuzzy] X-Received-From: 134.134.136.20 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, Richard Henderson , david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" This patch adds the basic PASID-based iotlb (piotlb) invalidation support. piotlb is used during walking Intel VT-d 1st level page table. This patch only adds the basic processing. Detailed handling will be added in next patch. 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 | 57 ++++++++++++++++++++++++++++++++++++++= ++++ hw/i386/intel_iommu_internal.h | 13 ++++++++++ 2 files changed, 70 insertions(+) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index b007715..b9ac07d 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -3134,6 +3134,59 @@ static bool vtd_process_pasid_desc(IntelIOMMUState *= s, return (ret =3D=3D 0) ? true : false; } =20 +static void vtd_piotlb_pasid_invalidate(IntelIOMMUState *s, + uint16_t domain_id, + uint32_t pasid) +{ +} + +static void vtd_piotlb_page_invalidate(IntelIOMMUState *s, uint16_t domain= _id, + uint32_t pasid, hwaddr addr, uint8_t am, bool= ih) +{ +} + +static bool vtd_process_piotlb_desc(IntelIOMMUState *s, + VTDInvDesc *inv_desc) +{ + uint16_t domain_id; + uint32_t pasid; + uint8_t am; + hwaddr addr; + + if ((inv_desc->val[0] & VTD_INV_DESC_PIOTLB_RSVD_VAL0) || + (inv_desc->val[1] & VTD_INV_DESC_PIOTLB_RSVD_VAL1)) { + error_report_once("non-zero-field-in-piotlb_inv_desc hi: 0x%" PRIx= 64 + " lo: 0x%" PRIx64, inv_desc->val[1], inv_desc->val[0]); + return false; + } + + domain_id =3D VTD_INV_DESC_PIOTLB_DID(inv_desc->val[0]); + pasid =3D VTD_INV_DESC_PIOTLB_PASID(inv_desc->val[0]); + switch (inv_desc->val[0] & VTD_INV_DESC_IOTLB_G) { + case VTD_INV_DESC_PIOTLB_ALL_IN_PASID: + vtd_piotlb_pasid_invalidate(s, domain_id, pasid); + break; + + case VTD_INV_DESC_PIOTLB_PSI_IN_PASID: + am =3D VTD_INV_DESC_PIOTLB_AM(inv_desc->val[1]); + addr =3D (hwaddr) VTD_INV_DESC_PIOTLB_ADDR(inv_desc->val[1]); + if (am > VTD_MAMV) { + error_report_once("Invalid am, > max am value, hi: 0x%" PRIx64 + " lo: 0x%" PRIx64, inv_desc->val[1], inv_desc->val[0]); + return false; + } + vtd_piotlb_page_invalidate(s, domain_id, pasid, + addr, am, VTD_INV_DESC_PIOTLB_IH(inv_desc->val[1])); + break; + + default: + error_report_once("Invalid granularity in P-IOTLB desc hi: 0x%" PR= Ix64 + " lo: 0x%" PRIx64, inv_desc->val[1], inv_desc->val[0]); + return false; + } + return true; +} + static bool vtd_process_inv_iec_desc(IntelIOMMUState *s, VTDInvDesc *inv_desc) { @@ -3248,6 +3301,10 @@ static bool vtd_process_inv_desc(IntelIOMMUState *s) break; =20 case VTD_INV_DESC_PIOTLB: + trace_vtd_inv_desc("p-iotlb", inv_desc.val[1], inv_desc.val[0]); + if (!vtd_process_piotlb_desc(s, &inv_desc)) { + return false; + } break; =20 case VTD_INV_DESC_WAIT: diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h index 6f32d7b..314e2c4 100644 --- a/hw/i386/intel_iommu_internal.h +++ b/hw/i386/intel_iommu_internal.h @@ -457,6 +457,19 @@ typedef union VTDInvDesc VTDInvDesc; #define VTD_INV_DESC_PASIDC_PASID_SI (1ULL << 4) #define VTD_INV_DESC_PASIDC_GLOBAL (3ULL << 4) =20 +#define VTD_INV_DESC_PIOTLB_ALL_IN_PASID (2ULL << 4) +#define VTD_INV_DESC_PIOTLB_PSI_IN_PASID (3ULL << 4) + +#define VTD_INV_DESC_PIOTLB_RSVD_VAL0 0xfff000000000ffc0ULL +#define VTD_INV_DESC_PIOTLB_RSVD_VAL1 0xf80ULL + +#define VTD_INV_DESC_PIOTLB_PASID(val) (((val) >> 32) & 0xfffffULL) +#define VTD_INV_DESC_PIOTLB_DID(val) (((val) >> 16) & \ + VTD_DOMAIN_ID_MASK) +#define VTD_INV_DESC_PIOTLB_ADDR(val) ((val) & ~0xfffULL) +#define VTD_INV_DESC_PIOTLB_AM(val) ((val) & 0x3fULL) +#define VTD_INV_DESC_PIOTLB_IH(val) (((val) >> 6) & 0x1) + /* Information about page-selective IOTLB invalidate */ struct VTDIOTLBPageInvInfo { uint16_t domain_id; --=20 2.7.4