From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C11ACC54FCF for ; Sun, 22 Mar 2020 12:30:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A2C0320724 for ; Sun, 22 Mar 2020 12:30:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727257AbgCVMau (ORCPT ); Sun, 22 Mar 2020 08:30:50 -0400 Received: from mga12.intel.com ([192.55.52.136]:40477 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727158AbgCVMal (ORCPT ); Sun, 22 Mar 2020 08:30:41 -0400 IronPort-SDR: 5NrbrcOIDVzlQZ1eeLZVULWkHa4xPGbdDJ+z6Kc2LhZOyQoX1r48ZRLm+E2pBUN7Sf8biUiIVr UDUILad00xrQ== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Mar 2020 05:30:39 -0700 IronPort-SDR: TqN52bRSjnvvxsJU9jEyhf9F6AUdxuzgn8JbCwADbsX4jobHLI9Hl99PYtlMexBJmCJe5B648c /DPisq9NwYVw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,292,1580803200"; d="scan'208";a="239664421" 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 From: Liu Yi L To: qemu-devel@nongnu.org, alex.williamson@redhat.com, peterx@redhat.com Cc: eric.auger@redhat.com, pbonzini@redhat.com, mst@redhat.com, david@gibson.dropbear.id.au, kevin.tian@intel.com, yi.l.liu@intel.com, jun.j.tian@intel.com, yi.y.sun@intel.com, kvm@vger.kernel.org, hao.wu@intel.com, jean-philippe@linaro.org, Jacob Pan , Yi Sun , Richard Henderson , Eduardo Habkost Subject: [PATCH v1 22/22] intel_iommu: modify x-scalable-mode to be string option Date: Sun, 22 Mar 2020 05:36:19 -0700 Message-Id: <1584880579-12178-23-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> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Intel VT-d 3.0 introduces scalable mode, and it has a bunch of capabilities related to scalable mode translation, thus there are multiple combinations. While this vIOMMU implementation wants simplify it for user by providing typical combinations. User could config it by "x-scalable-mode" option. The usage is as below: "-device intel-iommu,x-scalable-mode=["legacy"|"modern"|"off"]" - "legacy": gives support for SL page table - "modern": gives support for FL page table, pasid, virtual command - "off": no scalable mode support - if not configured, means no scalable mode support, if not proper configured, will throw error Note: this patch is supposed to be merged when the whole vSVA patch series were merged. 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 Signed-off-by: Yi Sun --- hw/i386/intel_iommu.c | 29 +++++++++++++++++++++++++++-- hw/i386/intel_iommu_internal.h | 4 ++++ include/hw/i386/intel_iommu.h | 2 ++ 3 files changed, 33 insertions(+), 2 deletions(-) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 72cd739..ea1f5c4 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -4171,7 +4171,7 @@ static Property vtd_properties[] = { DEFINE_PROP_UINT8("aw-bits", IntelIOMMUState, aw_bits, VTD_HOST_ADDRESS_WIDTH), DEFINE_PROP_BOOL("caching-mode", IntelIOMMUState, caching_mode, FALSE), - DEFINE_PROP_BOOL("x-scalable-mode", IntelIOMMUState, scalable_mode, FALSE), + DEFINE_PROP_STRING("x-scalable-mode", IntelIOMMUState, scalable_mode_str), DEFINE_PROP_BOOL("dma-drain", IntelIOMMUState, dma_drain, true), DEFINE_PROP_END_OF_LIST(), }; @@ -4802,8 +4802,12 @@ static void vtd_init(IntelIOMMUState *s) } /* TODO: read cap/ecap from host to decide which cap to be exposed. */ - if (s->scalable_mode) { + if (s->scalable_mode && !s->scalable_modern) { s->ecap |= VTD_ECAP_SMTS | VTD_ECAP_SRS | VTD_ECAP_SLTS; + } else if (s->scalable_mode && s->scalable_modern) { + s->ecap |= VTD_ECAP_SMTS | VTD_ECAP_SRS | VTD_ECAP_PASID + | VTD_ECAP_FLTS | VTD_ECAP_PSS | VTD_ECAP_VCS; + s->vccap |= VTD_VCCAP_PAS; } vtd_reset_caches(s); @@ -4935,6 +4939,27 @@ static bool vtd_decide_config(IntelIOMMUState *s, Error **errp) return false; } + if (s->scalable_mode_str && + (strcmp(s->scalable_mode_str, "modern") && + strcmp(s->scalable_mode_str, "legacy"))) { + error_setg(errp, "Invalid x-scalable-mode config," + "Please use \"modern\", \"legacy\" or \"off\""); + return false; + } + + if (s->scalable_mode_str && + !strcmp(s->scalable_mode_str, "legacy")) { + s->scalable_mode = true; + s->scalable_modern = false; + } else if (s->scalable_mode_str && + !strcmp(s->scalable_mode_str, "modern")) { + s->scalable_mode = true; + s->scalable_modern = true; + } else { + s->scalable_mode = false; + s->scalable_modern = false; + } + return true; } diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h index b5507ce..52b25ff 100644 --- a/hw/i386/intel_iommu_internal.h +++ b/hw/i386/intel_iommu_internal.h @@ -196,8 +196,12 @@ #define VTD_ECAP_PT (1ULL << 6) #define VTD_ECAP_MHMV (15ULL << 20) #define VTD_ECAP_SRS (1ULL << 31) +#define VTD_ECAP_PSS (19ULL << 35) +#define VTD_ECAP_PASID (1ULL << 40) #define VTD_ECAP_SMTS (1ULL << 43) +#define VTD_ECAP_VCS (1ULL << 44) #define VTD_ECAP_SLTS (1ULL << 46) +#define VTD_ECAP_FLTS (1ULL << 47) /* CAP_REG */ /* (offset >> 4) << 24 */ diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h index 9782ac4..07494d4 100644 --- a/include/hw/i386/intel_iommu.h +++ b/include/hw/i386/intel_iommu.h @@ -268,6 +268,8 @@ struct IntelIOMMUState { bool caching_mode; /* RO - is cap CM enabled? */ bool scalable_mode; /* RO - is Scalable Mode supported? */ + char *scalable_mode_str; /* RO - admin's Scalable Mode config */ + bool scalable_modern; /* RO - is modern SM supported? */ dma_addr_t root; /* Current root table pointer */ bool root_scalable; /* Type of root table (scalable or not) */ -- 2.7.4