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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=no 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 80FDAC10DCE for ; Sat, 14 Mar 2020 01:09:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4E27B206FA for ; Sat, 14 Mar 2020 01:09:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727719AbgCNBJp (ORCPT ); Fri, 13 Mar 2020 21:09:45 -0400 Received: from mga07.intel.com ([134.134.136.100]:43136 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726853AbgCNBJp (ORCPT ); Fri, 13 Mar 2020 21:09:45 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 13 Mar 2020 18:09:44 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,550,1574150400"; d="scan'208";a="266912386" Received: from allen-box.sh.intel.com ([10.239.159.139]) by fmsmga004.fm.intel.com with ESMTP; 13 Mar 2020 18:09:41 -0700 From: Lu Baolu To: Joerg Roedel Cc: ashok.raj@intel.com, jacob.jun.pan@linux.intel.com, kevin.tian@intel.com, Sai Praneeth Prakhya , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Daniel Drake , Derrick Jonathan , Jerry Snitselaar , Robin Murphy , Christoph Hellwig , Lu Baolu Subject: [PATCH v2 0/6] Replace private domain with per-group default domain Date: Sat, 14 Mar 2020 09:06:59 +0800 Message-Id: <20200314010705.30711-1-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.17.1 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Some devices are reqired to use a specific type (identity or dma) of default domain when they are used with a vendor iommu. When the system level default domain type is different from it, the vendor iommu driver has to request a new default domain with either iommu_request_dma_domain_for_dev() or iommu_request_dm_for_dev() in the add_dev() callback. Unfortunately, these two helpers only work when the group hasn't been assigned to any other devices, hence, some vendor iommu driver has to use a private domain if it fails to request a new default one. This patch series aims to remove the private domain requirement in vendor iommu driver with enabling the iommu generic code to support configuring per-group default domain. It introduces a new callback in iommu_ops, named def_domain_type(), so that the iommu generic code could check whether a device is required to use any specific type of default domain during the process of device probing. If unlikely a device requires a special default domain type other than that in use, iommu probe procedure will either allocate a new domain according to the specified domain type, or (if the group has other devices sitting in it) change the default domain. The vendor iommu driver which exposes the def_domain_type callback should guarantee that there're no multiple devices belonging to a same group require differnt types of default domain. Please help to review. Best regards, baolu Change log: v1->v2: - Rename the iommu ops callback to def_domain_type Lu Baolu (5): iommu: Configure default domain with def_domain_type iommu/vt-d: Don't force 32bit devices to uses DMA domain iommu/vt-d: Don't force PCI sub-hierarchy to use DMA domain iommu/vt-d: Add def_domain_type callback iommu/vt-d: Apply per-device dma_ops Sai Praneeth Prakhya (1): iommu: Add def_domain_type() callback in iommu_ops drivers/iommu/intel-iommu.c | 453 +++--------------------------------- drivers/iommu/iommu.c | 93 +++++++- include/linux/iommu.h | 6 + 3 files changed, 126 insertions(+), 426 deletions(-) -- 2.17.1 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=-3.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=no 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 03F9CC4CECE for ; Sat, 14 Mar 2020 01:09:48 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (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 C93AA206FA for ; Sat, 14 Mar 2020 01:09:47 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C93AA206FA Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id 97865881BC; Sat, 14 Mar 2020 01:09:47 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id lPUkMEz0w5N7; Sat, 14 Mar 2020 01:09:47 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by whitealder.osuosl.org (Postfix) with ESMTP id 0D416881B3; Sat, 14 Mar 2020 01:09:47 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id E8277C18D3; Sat, 14 Mar 2020 01:09:46 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 576C1C0177 for ; Sat, 14 Mar 2020 01:09:45 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id 46A8A881B7 for ; Sat, 14 Mar 2020 01:09:45 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id yFXTEqXLdVVb for ; Sat, 14 Mar 2020 01:09:44 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by whitealder.osuosl.org (Postfix) with ESMTPS id 9DCDB881B3 for ; Sat, 14 Mar 2020 01:09:44 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 13 Mar 2020 18:09:44 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,550,1574150400"; d="scan'208";a="266912386" Received: from allen-box.sh.intel.com ([10.239.159.139]) by fmsmga004.fm.intel.com with ESMTP; 13 Mar 2020 18:09:41 -0700 From: Lu Baolu To: Joerg Roedel Subject: [PATCH v2 0/6] Replace private domain with per-group default domain Date: Sat, 14 Mar 2020 09:06:59 +0800 Message-Id: <20200314010705.30711-1-baolu.lu@linux.intel.com> X-Mailer: git-send-email 2.17.1 Cc: kevin.tian@intel.com, ashok.raj@intel.com, linux-kernel@vger.kernel.org, Daniel Drake , iommu@lists.linux-foundation.org, Robin Murphy , Christoph Hellwig , Derrick Jonathan X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" Some devices are reqired to use a specific type (identity or dma) of default domain when they are used with a vendor iommu. When the system level default domain type is different from it, the vendor iommu driver has to request a new default domain with either iommu_request_dma_domain_for_dev() or iommu_request_dm_for_dev() in the add_dev() callback. Unfortunately, these two helpers only work when the group hasn't been assigned to any other devices, hence, some vendor iommu driver has to use a private domain if it fails to request a new default one. This patch series aims to remove the private domain requirement in vendor iommu driver with enabling the iommu generic code to support configuring per-group default domain. It introduces a new callback in iommu_ops, named def_domain_type(), so that the iommu generic code could check whether a device is required to use any specific type of default domain during the process of device probing. If unlikely a device requires a special default domain type other than that in use, iommu probe procedure will either allocate a new domain according to the specified domain type, or (if the group has other devices sitting in it) change the default domain. The vendor iommu driver which exposes the def_domain_type callback should guarantee that there're no multiple devices belonging to a same group require differnt types of default domain. Please help to review. Best regards, baolu Change log: v1->v2: - Rename the iommu ops callback to def_domain_type Lu Baolu (5): iommu: Configure default domain with def_domain_type iommu/vt-d: Don't force 32bit devices to uses DMA domain iommu/vt-d: Don't force PCI sub-hierarchy to use DMA domain iommu/vt-d: Add def_domain_type callback iommu/vt-d: Apply per-device dma_ops Sai Praneeth Prakhya (1): iommu: Add def_domain_type() callback in iommu_ops drivers/iommu/intel-iommu.c | 453 +++--------------------------------- drivers/iommu/iommu.c | 93 +++++++- include/linux/iommu.h | 6 + 3 files changed, 126 insertions(+), 426 deletions(-) -- 2.17.1 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu