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 Received: from smtp4.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 87A76C433F5 for ; Tue, 8 Mar 2022 08:50:48 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id 1E6504173C; Tue, 8 Mar 2022 08:50:48 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id NEkdzuRQEzRi; Tue, 8 Mar 2022 08:50:47 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by smtp4.osuosl.org (Postfix) with ESMTPS id 0DE23416A5; Tue, 8 Mar 2022 08:50:46 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 84469C0082; Tue, 8 Mar 2022 08:50:46 +0000 (UTC) Received: from smtp4.osuosl.org (smtp4.osuosl.org [IPv6:2605:bc80:3010::137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 0A025C001D for ; Tue, 8 Mar 2022 08:50:45 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by smtp4.osuosl.org (Postfix) with ESMTP id E5B62416A5 for ; Tue, 8 Mar 2022 08:50:44 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from smtp4.osuosl.org ([127.0.0.1]) by localhost (smtp4.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Vt1PrPCzOZsU for ; Tue, 8 Mar 2022 08:50:43 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.8.0 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by smtp4.osuosl.org (Postfix) with ESMTPS id 0CAE841681 for ; Tue, 8 Mar 2022 08:50:42 +0000 (UTC) Received: from canpemm500009.china.huawei.com (unknown [172.30.72.53]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4KCTWd0Hz5zBrjL; Tue, 8 Mar 2022 16:48:45 +0800 (CST) Received: from localhost.localdomain (10.67.164.66) by canpemm500009.china.huawei.com (7.192.105.203) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Tue, 8 Mar 2022 16:50:39 +0800 To: , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH v5 1/8] iommu/arm-smmu-v3: Make default domain type of HiSilicon PTT device to identity Date: Tue, 8 Mar 2022 16:49:23 +0800 Message-ID: <20220308084930.5142-2-yangyicong@hisilicon.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20220308084930.5142-1-yangyicong@hisilicon.com> References: <20220308084930.5142-1-yangyicong@hisilicon.com> MIME-Version: 1.0 X-Originating-IP: [10.67.164.66] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To canpemm500009.china.huawei.com (7.192.105.203) X-CFilter-Loop: Reflected Cc: song.bao.hua@hisilicon.com, prime.zeng@huawei.com, linuxarm@huawei.com, yangyicong@hisilicon.com, zhangshaokun@hisilicon.com, liuqi115@huawei.com 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: , From: Yicong Yang via iommu Reply-To: Yicong Yang Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" The DMA of HiSilicon PTT device can only work with identical mapping. So add a quirk for the device to force the domain passthrough. Signed-off-by: Yicong Yang --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 16 ++++++++++++++++ 1 file changed, 16 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 6dc6d8b6b368..6f67a2b1dd27 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2838,6 +2838,21 @@ static int arm_smmu_dev_disable_feature(struct device *dev, } } +#define IS_HISI_PTT_DEVICE(pdev) ((pdev)->vendor == PCI_VENDOR_ID_HUAWEI && \ + (pdev)->device == 0xa12e) + +static int arm_smmu_def_domain_type(struct device *dev) +{ + if (dev_is_pci(dev)) { + struct pci_dev *pdev = to_pci_dev(dev); + + if (IS_HISI_PTT_DEVICE(pdev)) + return IOMMU_DOMAIN_IDENTITY; + } + + return 0; +} + static struct iommu_ops arm_smmu_ops = { .capable = arm_smmu_capable, .domain_alloc = arm_smmu_domain_alloc, @@ -2863,6 +2878,7 @@ static struct iommu_ops arm_smmu_ops = { .sva_unbind = arm_smmu_sva_unbind, .sva_get_pasid = arm_smmu_sva_get_pasid, .page_response = arm_smmu_page_response, + .def_domain_type = arm_smmu_def_domain_type, .pgsize_bitmap = -1UL, /* Restricted during device attach */ .owner = THIS_MODULE, }; -- 2.24.0 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu