From patchwork Mon Nov 11 08:34:40 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Duan, Zhenzhong" X-Patchwork-Id: 13870378 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 0D86CD2E9C2 for ; Mon, 11 Nov 2024 08:39:56 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tAPwY-0004uc-QY; Mon, 11 Nov 2024 03:38:42 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tAPwD-0004rC-Up for qemu-devel@nongnu.org; Mon, 11 Nov 2024 03:38:21 -0500 Received: from mgamail.intel.com ([192.198.163.14]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tAPwA-0003Ti-7n for qemu-devel@nongnu.org; Mon, 11 Nov 2024 03:38:21 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1731314298; x=1762850298; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=MOa8d+ZTab9kO7H0Fv5Pl2cDsaYrayGN1vt43IDtJ4E=; b=YJclkUdnkz8TvNkp+JydxtHa/f+JAdAsCivDD+Wh2j2uqyp4ezn+86jU 41yP2zMQIf14d8r0lNjXbR8cnyencdADm2BmxmwHPZuAQOVHJfud47MTr ulrmS738ShGZoFNqXfj+fHKdeQEaiHZzMkMb7z1GKpEuw4wbBZkOxrUkk 8WKRWJu3B6SEnRLJy3how58qW95iLxCYFzqQjX49/cWS2aV+tG+G5uM8W ntMcpXfTM01QcmKks2tokl8U8KAG2DAhUPFEgWtYujXppamxYZb9iiitI ShJnR87HRtAVEk3OtlIBtPtBb1Utrl9s1LVF/hjFU0zUKfpR2JcYOO8VF g==; X-CSE-ConnectionGUID: 2jwcAfPIQj6nzKAQ8p76WA== X-CSE-MsgGUID: gHneuQHmQ02vKhxyJkf+5A== X-IronPort-AV: E=McAfee;i="6700,10204,11252"; a="31334349" X-IronPort-AV: E=Sophos;i="6.12,144,1728975600"; d="scan'208";a="31334349" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa108.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Nov 2024 00:38:17 -0800 X-CSE-ConnectionGUID: eeSzH7jbStGwCe56fKJATg== X-CSE-MsgGUID: dbmmTXGFQCqJBGrtCcKiIg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,144,1728975600"; d="scan'208";a="87608252" Received: from spr-s2600bt.bj.intel.com ([10.240.192.127]) by orviesa008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Nov 2024 00:38:13 -0800 From: Zhenzhong Duan To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, clg@redhat.com, eric.auger@redhat.com, mst@redhat.com, peterx@redhat.com, jasowang@redhat.com, jgg@nvidia.com, nicolinc@nvidia.com, joao.m.martins@oracle.com, clement.mathieu--drif@eviden.com, kevin.tian@intel.com, yi.l.liu@intel.com, chao.p.peng@intel.com, Zhenzhong Duan , Marcel Apfelbaum , Paolo Bonzini , Richard Henderson , Eduardo Habkost Subject: [PATCH v5 03/20] intel_iommu: Add a placeholder variable for scalable modern mode Date: Mon, 11 Nov 2024 16:34:40 +0800 Message-Id: <20241111083457.2090664-4-zhenzhong.duan@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241111083457.2090664-1-zhenzhong.duan@intel.com> References: <20241111083457.2090664-1-zhenzhong.duan@intel.com> MIME-Version: 1.0 Received-SPF: pass client-ip=192.198.163.14; envelope-from=zhenzhong.duan@intel.com; helo=mgamail.intel.com X-Spam_score_int: -44 X-Spam_score: -4.5 X-Spam_bar: ---- X-Spam_report: (-4.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.118, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Add an new element scalable_mode in IntelIOMMUState to mark scalable modern mode, this element will be exposed as an intel_iommu property finally. For now, it's only a placehholder and used for address width compatibility check and block host device passthrough until nesting is supported. Signed-off-by: Yi Liu Signed-off-by: Zhenzhong Duan Acked-by: Jason Wang Reviewed-by: Clément Mathieu--Drif Reviewed-by: Yi Liu --- include/hw/i386/intel_iommu.h | 1 + hw/i386/intel_iommu.c | 23 ++++++++++++++++++----- 2 files changed, 19 insertions(+), 5 deletions(-) diff --git a/include/hw/i386/intel_iommu.h b/include/hw/i386/intel_iommu.h index d372cd396b..3d65bbbd56 100644 --- a/include/hw/i386/intel_iommu.h +++ b/include/hw/i386/intel_iommu.h @@ -262,6 +262,7 @@ struct IntelIOMMUState { bool caching_mode; /* RO - is cap CM enabled? */ bool scalable_mode; /* RO - is Scalable Mode supported? */ + bool scalable_modern; /* RO - is modern SM supported? */ bool snoop_control; /* RO - is SNP filed supported? */ dma_addr_t root; /* Current root table pointer */ diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 10b8425a6c..1d13916a98 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -3918,7 +3918,13 @@ static bool vtd_check_hiod(IntelIOMMUState *s, HostIOMMUDevice *hiod, return false; } - return true; + if (!s->scalable_modern) { + /* All checks requested by VTD non-modern mode pass */ + return true; + } + + error_setg(errp, "host device is unsupported in scalable modern mode yet"); + return false; } static bool vtd_dev_set_iommu_device(PCIBus *bus, void *opaque, int devfn, @@ -4308,14 +4314,21 @@ static bool vtd_decide_config(IntelIOMMUState *s, Error **errp) } } - /* Currently only address widths supported are 39 and 48 bits */ - if ((s->aw_bits != VTD_HOST_AW_39BIT) && - (s->aw_bits != VTD_HOST_AW_48BIT)) { - error_setg(errp, "Supported values for aw-bits are: %d, %d", + if (!s->scalable_modern && s->aw_bits != VTD_HOST_AW_39BIT && + s->aw_bits != VTD_HOST_AW_48BIT) { + error_setg(errp, "%s mode: supported values for aw-bits are: %d, %d", + s->scalable_mode ? "Scalable" : "Legacy", VTD_HOST_AW_39BIT, VTD_HOST_AW_48BIT); return false; } + if (s->scalable_modern && s->aw_bits != VTD_HOST_AW_48BIT) { + error_setg(errp, + "Scalable modern mode: supported values for aw-bits is: %d", + VTD_HOST_AW_48BIT); + return false; + } + if (s->scalable_mode && !s->dma_drain) { error_setg(errp, "Need to set dma_drain for scalable mode"); return false;