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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 76F06C433ED for ; Fri, 7 May 2021 10:23:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3D8A861464 for ; Fri, 7 May 2021 10:23:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236433AbhEGKYy (ORCPT ); Fri, 7 May 2021 06:24:54 -0400 Received: from szxga07-in.huawei.com ([45.249.212.35]:18349 "EHLO szxga07-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236037AbhEGKYR (ORCPT ); Fri, 7 May 2021 06:24:17 -0400 Received: from DGGEMS408-HUB.china.huawei.com (unknown [172.30.72.58]) by szxga07-in.huawei.com (SkyGuard) with ESMTP id 4Fc5zw4Fn0zCr6W; Fri, 7 May 2021 18:20:12 +0800 (CST) Received: from DESKTOP-5IS4806.china.huawei.com (10.174.187.224) by DGGEMS408-HUB.china.huawei.com (10.3.19.208) with Microsoft SMTP Server id 14.3.498.0; Fri, 7 May 2021 18:22:42 +0800 From: Keqian Zhu To: , , , Robin Murphy , "Will Deacon" , Joerg Roedel , "Jean-Philippe Brucker" , Lu Baolu , "Yi Sun" , Tian Kevin CC: Alex Williamson , Kirti Wankhede , Cornelia Huck , Jonathan Cameron , , , , Subject: [RFC PATCH v4 13/13] iommu/arm-smmu-v3: Realize support_dirty_log iommu ops Date: Fri, 7 May 2021 18:22:11 +0800 Message-ID: <20210507102211.8836-14-zhukeqian1@huawei.com> X-Mailer: git-send-email 2.8.4.windows.1 In-Reply-To: <20210507102211.8836-1-zhukeqian1@huawei.com> References: <20210507102211.8836-1-zhukeqian1@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.174.187.224] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kunkun Jiang We have implemented these interfaces required to support iommu dirty log tracking. The last step is reporting this feature to upper user, then the user can perform higher policy base on it. For arm smmuv3, it is equal to ARM_SMMU_FEAT_HD. Co-developed-by: Keqian Zhu Signed-off-by: Kunkun Jiang --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c index 9b4739247dbb..59d11f084199 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2684,6 +2684,13 @@ static int arm_smmu_merge_page(struct iommu_domain *domain, unsigned long iova, return ret; } +static bool arm_smmu_support_dirty_log(struct iommu_domain *domain) +{ + struct arm_smmu_domain *smmu_domain = to_smmu_domain(domain); + + return !!(smmu_domain->smmu->features & ARM_SMMU_FEAT_HD); +} + static int arm_smmu_switch_dirty_log(struct iommu_domain *domain, bool enable, unsigned long iova, size_t size, int prot) { @@ -2872,6 +2879,7 @@ static struct iommu_ops arm_smmu_ops = { .release_device = arm_smmu_release_device, .device_group = arm_smmu_device_group, .enable_nesting = arm_smmu_enable_nesting, + .support_dirty_log = arm_smmu_support_dirty_log, .switch_dirty_log = arm_smmu_switch_dirty_log, .sync_dirty_log = arm_smmu_sync_dirty_log, .clear_dirty_log = arm_smmu_clear_dirty_log, -- 2.19.1