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 4F0CAC3A589 for ; Thu, 15 Aug 2019 20:10:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 27F172086C for ; Thu, 15 Aug 2019 20:10:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387508AbfHOUKU (ORCPT ); Thu, 15 Aug 2019 16:10:20 -0400 Received: from mga18.intel.com ([134.134.136.126]:43476 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733293AbfHOUJt (ORCPT ); Thu, 15 Aug 2019 16:09:49 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 15 Aug 2019 13:09:42 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,389,1559545200"; d="scan'208";a="188596238" Received: from jacob-builder.jf.intel.com ([10.7.199.155]) by orsmga002.jf.intel.com with ESMTP; 15 Aug 2019 13:09:42 -0700 From: Jacob Pan To: iommu@lists.linux-foundation.org, LKML , Joerg Roedel , David Woodhouse , Alex Williamson Cc: Eric Auger , "Yi Liu" , "Tian, Kevin" , Raj Ashok , "Christoph Hellwig" , Jean-Philippe Brucker , "Lu Baolu" , Jonathan Cameron Subject: [PATCH v5 14/19] iommu/vt-d: Avoid duplicated code for PASID setup Date: Thu, 15 Aug 2019 13:13:20 -0700 Message-Id: <1565900005-62508-15-git-send-email-jacob.jun.pan@linux.intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1565900005-62508-1-git-send-email-jacob.jun.pan@linux.intel.com> References: <1565900005-62508-1-git-send-email-jacob.jun.pan@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org After each setup for PASID entry, related translation caches must be flushed. We can combine duplicated code into one function which is less error prone. Signed-off-by: Jacob Pan --- drivers/iommu/intel-pasid.c | 48 +++++++++++++++++---------------------------- 1 file changed, 18 insertions(+), 30 deletions(-) diff --git a/drivers/iommu/intel-pasid.c b/drivers/iommu/intel-pasid.c index c0d1f28..9c5affc 100644 --- a/drivers/iommu/intel-pasid.c +++ b/drivers/iommu/intel-pasid.c @@ -512,6 +512,21 @@ void intel_pasid_tear_down_entry(struct intel_iommu *iommu, devtlb_invalidation_with_pasid(iommu, dev, pasid); } +static void pasid_flush_caches(struct intel_iommu *iommu, + struct pasid_entry *pte, + int pasid, u16 did) +{ + if (!ecap_coherent(iommu->ecap)) + clflush_cache_range(pte, sizeof(*pte)); + + if (cap_caching_mode(iommu->cap)) { + pasid_cache_invalidation_with_pasid(iommu, did, pasid); + iotlb_invalidation_with_pasid(iommu, did, pasid); + } else { + iommu_flush_write_buffer(iommu); + } +} + /* * Set up the scalable mode pasid table entry for first only * translation type. @@ -557,16 +572,7 @@ int intel_pasid_setup_first_level(struct intel_iommu *iommu, /* Setup Present and PASID Granular Transfer Type: */ pasid_set_translation_type(pte, 1); pasid_set_present(pte); - - if (!ecap_coherent(iommu->ecap)) - clflush_cache_range(pte, sizeof(*pte)); - - if (cap_caching_mode(iommu->cap)) { - pasid_cache_invalidation_with_pasid(iommu, did, pasid); - iotlb_invalidation_with_pasid(iommu, did, pasid); - } else { - iommu_flush_write_buffer(iommu); - } + pasid_flush_caches(iommu, pte, pasid, did); return 0; } @@ -630,16 +636,7 @@ int intel_pasid_setup_second_level(struct intel_iommu *iommu, */ pasid_set_sre(pte); pasid_set_present(pte); - - if (!ecap_coherent(iommu->ecap)) - clflush_cache_range(pte, sizeof(*pte)); - - if (cap_caching_mode(iommu->cap)) { - pasid_cache_invalidation_with_pasid(iommu, did, pasid); - iotlb_invalidation_with_pasid(iommu, did, pasid); - } else { - iommu_flush_write_buffer(iommu); - } + pasid_flush_caches(iommu, pte, pasid, did); return 0; } @@ -673,16 +670,7 @@ int intel_pasid_setup_pass_through(struct intel_iommu *iommu, */ pasid_set_sre(pte); pasid_set_present(pte); - - if (!ecap_coherent(iommu->ecap)) - clflush_cache_range(pte, sizeof(*pte)); - - if (cap_caching_mode(iommu->cap)) { - pasid_cache_invalidation_with_pasid(iommu, did, pasid); - iotlb_invalidation_with_pasid(iommu, did, pasid); - } else { - iommu_flush_write_buffer(iommu); - } + pasid_flush_caches(iommu, pte, pasid, did); return 0; } -- 2.7.4