From nobody Wed Feb 11 19:41:06 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id C8523C76196 for ; Tue, 11 Apr 2023 06:49:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230284AbjDKGtd (ORCPT ); Tue, 11 Apr 2023 02:49:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33030 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230209AbjDKGtE (ORCPT ); Tue, 11 Apr 2023 02:49:04 -0400 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 94DAE30DC for ; Mon, 10 Apr 2023 23:48:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1681195726; x=1712731726; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=svE7EgjquyhwRZbom4QiBGJ7Mxb0NsfSfLHDW+HF/GA=; b=R7lUl7+hfgtUKRkPb+mVoNFLEYJz1jrvgduqPBljUQn8SOtFVfxVhZsO N1kIFY4vLMnh9EI+BeVP/rephmy6C6TLMgp+76Z4M8I0SR8c/sR2IkvU4 boqLANh0m21Qynp/TcWbR4Proir9D/bM3TvENcq0vfB0w/SREGDwloHk6 fMibS950OEKIGY9besAu7ybygXW+h0Z4L90Jv8qmHxAU+TY3nNY2HlWr0 dKvMwfcNrEjRpYfiFSW4K37i+PLjf3zyJoQCCbMCSmKKMF73nkRCKxWmz Oa5mAIRgVcbwoH9UswUu/lWiylZlmWf9SJUaPKb/OEv9PnMPiXCKxIn16 g==; X-IronPort-AV: E=McAfee;i="6600,9927,10676"; a="341028522" X-IronPort-AV: E=Sophos;i="5.98,336,1673942400"; d="scan'208";a="341028522" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 10 Apr 2023 23:48:20 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10676"; a="1018256558" X-IronPort-AV: E=Sophos;i="5.98,336,1673942400"; d="scan'208";a="1018256558" Received: from allen-box.sh.intel.com ([10.239.159.127]) by fmsmga005.fm.intel.com with ESMTP; 10 Apr 2023 23:48:18 -0700 From: Lu Baolu To: Joerg Roedel Cc: Vinod Koul , Tina Zhang , Jacob Pan , Christophe JAILLET , iommu@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH 04/17] iommu/vt-d: Move pfsid and ats_qdep calculation to device probe path Date: Tue, 11 Apr 2023 14:48:02 +0800 Message-Id: <20230411064815.31456-5-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230411064815.31456-1-baolu.lu@linux.intel.com> References: <20230411064815.31456-1-baolu.lu@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" They should be part of the per-device iommu private data initialization. Reviewed-by: Jacob Pan Reviewed-by: Kevin Tian Signed-off-by: Lu Baolu Link: https://lore.kernel.org/r/20230324120234.313643-5-baolu.lu@linux.inte= l.com --- drivers/iommu/intel/iommu.c | 26 +++++++++++--------------- 1 file changed, 11 insertions(+), 15 deletions(-) diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index a6f07c74da2d..6d77b4072fdd 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -1406,20 +1406,6 @@ static void iommu_enable_pci_caps(struct device_doma= in_info *info) return; =20 pdev =3D to_pci_dev(info->dev); - /* For IOMMU that supports device IOTLB throttling (DIT), we assign - * PFSID to the invalidation desc of a VF such that IOMMU HW can gauge - * queue depth at PF level. If DIT is not set, PFSID will be treated as - * reserved, which should be set to 0. - */ - if (!ecap_dit(info->iommu->ecap)) - info->pfsid =3D 0; - else { - struct pci_dev *pf_pdev; - - /* pdev will be returned if device is not a vf */ - pf_pdev =3D pci_physfn(pdev); - info->pfsid =3D pci_dev_id(pf_pdev); - } =20 /* The PCIe spec, in its wisdom, declares that the behaviour of the device if you enable PASID support after ATS support is @@ -1438,7 +1424,6 @@ static void iommu_enable_pci_caps(struct device_domai= n_info *info) !pci_enable_ats(pdev, VTD_PAGE_SHIFT)) { info->ats_enabled =3D 1; domain_update_iotlb(info->domain); - info->ats_qdep =3D pci_ats_queue_depth(pdev); } } =20 @@ -4521,6 +4506,17 @@ static struct iommu_device *intel_iommu_probe_device= (struct device *dev) dmar_ats_supported(pdev, iommu)) { info->ats_supported =3D 1; info->dtlb_extra_inval =3D dev_needs_extra_dtlb_flush(pdev); + + /* + * For IOMMU that supports device IOTLB throttling + * (DIT), we assign PFSID to the invalidation desc + * of a VF such that IOMMU HW can gauge queue depth + * at PF level. If DIT is not set, PFSID will be + * treated as reserved, which should be set to 0. + */ + if (ecap_dit(iommu->ecap)) + info->pfsid =3D pci_dev_id(pci_physfn(pdev)); + info->ats_qdep =3D pci_ats_queue_depth(pdev); } if (sm_supported(iommu)) { if (pasid_supported(iommu)) { --=20 2.34.1