From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp.codeaurora.org by pdx-caf-mail.web.codeaurora.org (Dovecot) with LMTP id jK4IFXAGHVsiNwAAmS7hNA ; Sun, 10 Jun 2018 11:08:41 +0000 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 258B1608B8; Sun, 10 Jun 2018 11:08:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.0 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by smtp.codeaurora.org (Postfix) with ESMTP id 9E4A9600D0; Sun, 10 Jun 2018 11:08:40 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 9E4A9600D0 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=huawei.com Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753897AbeFJLIh (ORCPT + 25 others); Sun, 10 Jun 2018 07:08:37 -0400 Received: from szxga06-in.huawei.com ([45.249.212.32]:35206 "EHLO huawei.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1753869AbeFJLIg (ORCPT ); Sun, 10 Jun 2018 07:08:36 -0400 Received: from DGGEMS407-HUB.china.huawei.com (unknown [172.30.72.58]) by Forcepoint Email with ESMTP id 72320B2132917; Sun, 10 Jun 2018 19:08:32 +0800 (CST) Received: from localhost (10.177.23.164) by DGGEMS407-HUB.china.huawei.com (10.3.19.207) with Microsoft SMTP Server id 14.3.382.0; Sun, 10 Jun 2018 19:08:26 +0800 From: Zhen Lei To: Robin Murphy , Will Deacon , Joerg Roedel , iommu , linux-kernel CC: Zhen Lei , Hanjun Guo , Libin , Guozhu Li , "Xinwei Hu" Subject: [PATCH v2 5/5] iommu/arm-smmu-v3: add support for non-strict mode Date: Sun, 10 Jun 2018 19:07:23 +0800 Message-ID: <1528628843-10280-6-git-send-email-thunder.leizhen@huawei.com> X-Mailer: git-send-email 1.9.5.msysgit.0 In-Reply-To: <1528628843-10280-1-git-send-email-thunder.leizhen@huawei.com> References: <1528628843-10280-1-git-send-email-thunder.leizhen@huawei.com> MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.177.23.164] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 1. Add IOMMU_CAP_NON_STRICT capability. 2. Dynamic choose strict or non-strict mode base on the iommu domain type. Signed-off-by: Zhen Lei --- drivers/iommu/arm-smmu-v3.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/iommu/arm-smmu-v3.c b/drivers/iommu/arm-smmu-v3.c index 4402187..4a198a0 100644 --- a/drivers/iommu/arm-smmu-v3.c +++ b/drivers/iommu/arm-smmu-v3.c @@ -1440,6 +1440,8 @@ static bool arm_smmu_capable(enum iommu_cap cap) return true; case IOMMU_CAP_NOEXEC: return true; + case IOMMU_CAP_NON_STRICT: + return true; default: return false; } @@ -1767,7 +1769,7 @@ static int arm_smmu_map(struct iommu_domain *domain, unsigned long iova, if (!ops) return 0; - return ops->unmap(ops, iova, size); + return ops->unmap(ops, iova | IOMMU_DOMAIN_STRICT_MODE(domain), size); } static void arm_smmu_flush_iotlb_all(struct iommu_domain *domain) @@ -1782,7 +1784,7 @@ static void arm_smmu_iotlb_sync(struct iommu_domain *domain) { struct arm_smmu_device *smmu = to_smmu_domain(domain)->smmu; - if (smmu) + if (smmu && (IOMMU_DOMAIN_STRICT_MODE(domain) == IOMMU_STRICT)) __arm_smmu_tlb_sync(smmu); } -- 1.8.3