From patchwork Wed Jul 3 10:16:00 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shameer Kolothum X-Patchwork-Id: 13721734 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 0B972C2BD09 for ; Wed, 3 Jul 2024 10:18:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:CC:To:From:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=YkYcgmUAj8S/tv2hPK02z87TyPR6lrpfODQ13FNWGXg=; b=svXCoCWH3umBD2l++ey7cU1gp8 Nna5OG+i584x+GCpCrNaEmpAvvIWGk7MZThe44y/cbsrmXkiu8gBCIAh3jD4ElLIPBTFy+SHDsld2 fm1BJqTJEfGz+8fjsgXsZft67chh1LV+C7jKaHIPq5U0WAtexOjjNf9WOBFdpTC1GroDXAInt8OSR kOtQjEiTojblZMDk25zZKyQcwIcg7l8lC1D2nZDEZEpQpfs8kjj5rVWnHPHsPp3WtPsvV3/hCN7yS pZWFpEynBhyVs/2WeZ/gHxUJA+IHNrFDp9H11wanL2c6aIBNAwiZAMKxJYO2GSM38+pUe1ex7pdP8 BX5o1rHw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sOx4S-00000009iYx-2Qle; Wed, 03 Jul 2024 10:18:40 +0000 Received: from frasgout.his.huawei.com ([185.176.79.56]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sOx4A-00000009iSz-2vrx for linux-arm-kernel@lists.infradead.org; Wed, 03 Jul 2024 10:18:24 +0000 Received: from mail.maildlp.com (unknown [172.18.186.31]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4WDbKS3MGHz6K93x; Wed, 3 Jul 2024 18:16:28 +0800 (CST) Received: from lhrpeml500005.china.huawei.com (unknown [7.191.163.240]) by mail.maildlp.com (Postfix) with ESMTPS id 078F9140B2F; Wed, 3 Jul 2024 18:18:21 +0800 (CST) Received: from A2303104131.china.huawei.com (10.203.177.241) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Wed, 3 Jul 2024 11:18:12 +0100 From: Shameer Kolothum To: , , CC: , , , , , , , , , , , Subject: [PATCH v7 1/5] iommu/arm-smmu-v3: Add support for domain_alloc_user fn Date: Wed, 3 Jul 2024 11:16:00 +0100 Message-ID: <20240703101604.2576-2-shameerali.kolothum.thodi@huawei.com> X-Mailer: git-send-email 2.12.0.windows.1 In-Reply-To: <20240703101604.2576-1-shameerali.kolothum.thodi@huawei.com> References: <20240703101604.2576-1-shameerali.kolothum.thodi@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.203.177.241] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240703_031823_042520_5DFD9E73 X-CRM114-Status: GOOD ( 13.66 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org This will be used by iommufd for allocating usr managed domains and is also required when we add support for iommufd based dirty tracking support. Reviewed-by: Jason Gunthorpe Reviewed-by: Nicolin Chen Reviewed-by: Kevin Tian Signed-off-by: Shameer Kolothum --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 33 +++++++++++++++++++-- 1 file changed, 31 insertions(+), 2 deletions(-) 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 fbb7eb152d82..c616a38ecf28 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -36,6 +36,8 @@ module_param(disable_msipolling, bool, 0444); MODULE_PARM_DESC(disable_msipolling, "Disable MSI-based polling for CMD_SYNC completion."); +static struct iommu_ops arm_smmu_ops; + enum arm_smmu_msi_index { EVTQ_MSI_INDEX, GERROR_MSI_INDEX, @@ -3020,6 +3022,34 @@ static struct iommu_domain arm_smmu_blocked_domain = { .ops = &arm_smmu_blocked_ops, }; +static struct iommu_domain * +arm_smmu_domain_alloc_user(struct device *dev, u32 flags, + struct iommu_domain *parent, + const struct iommu_user_data *user_data) +{ + struct arm_smmu_master *master = dev_iommu_priv_get(dev); + struct arm_smmu_domain *smmu_domain; + int ret; + + if (flags || parent || user_data) + return ERR_PTR(-EOPNOTSUPP); + + smmu_domain = arm_smmu_domain_alloc(); + if (!smmu_domain) + return ERR_PTR(-ENOMEM); + + smmu_domain->domain.type = IOMMU_DOMAIN_UNMANAGED; + smmu_domain->domain.ops = arm_smmu_ops.default_domain_ops; + ret = arm_smmu_domain_finalise(smmu_domain, master->smmu); + if (ret) + goto err_free; + return &smmu_domain->domain; + +err_free: + kfree(smmu_domain); + return ERR_PTR(ret); +} + static int arm_smmu_map_pages(struct iommu_domain *domain, unsigned long iova, phys_addr_t paddr, size_t pgsize, size_t pgcount, int prot, gfp_t gfp, size_t *mapped) @@ -3190,8 +3220,6 @@ static void arm_smmu_remove_master(struct arm_smmu_master *master) kfree(master->streams); } -static struct iommu_ops arm_smmu_ops; - static struct iommu_device *arm_smmu_probe_device(struct device *dev) { int ret; @@ -3399,6 +3427,7 @@ static struct iommu_ops arm_smmu_ops = { .capable = arm_smmu_capable, .domain_alloc_paging = arm_smmu_domain_alloc_paging, .domain_alloc_sva = arm_smmu_sva_domain_alloc, + .domain_alloc_user = arm_smmu_domain_alloc_user, .probe_device = arm_smmu_probe_device, .release_device = arm_smmu_release_device, .device_group = arm_smmu_device_group,