From patchwork Fri Feb 12 10:58:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vivek Kumar Gautam X-Patchwork-Id: 12085015 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=-17.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 77969C433DB for ; Fri, 12 Feb 2021 11:00:36 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 342D164E36 for ; Fri, 12 Feb 2021 11:00:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 342D164E36 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:To: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=kXloWwlxnPRsqpPhvpxBrZq5Ay9elnp10w0r0jmBda8=; b=zLsKMUw0pAVAdGOY30W94nNvsm kXAVoyT5v3/iNQEVUAZb9glUT/JC7Vw4ugszNcOiKOolzyS4LY7gAcqKm4fuFMg4meS2Mge6KScSC H6oCAJb+IIhYLmJEoPHdeK+thd3ad1P/ScTzU+iuWLNaBvUsYN8nPWs9hhnB262RRt1jXYV+DixLq ietzz4e7HWZvLaHYiwzZKpi7xR1aXEwZPKjNvmfa7vQEHZdhTOiUSdcuUxEWtItncbzDt0Tq+DHeI ZM24PUNXIeb0R7cCFICr8iMeUIEK/Dd1bLFWMy1EWXylGAMTp+hkASsd4xzlB0e40dxPMhySG1dH4 NGRhQiOw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1lAWAc-0005E5-KK; Fri, 12 Feb 2021 10:59:30 +0000 Received: from foss.arm.com ([217.140.110.172]) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1lAWAW-0005CN-Gc for linux-arm-kernel@lists.infradead.org; Fri, 12 Feb 2021 10:59:25 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id A134511B3; Fri, 12 Feb 2021 02:59:15 -0800 (PST) Received: from usa.arm.com (a074945.blr.arm.com [10.162.16.71]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 614273F719; Fri, 12 Feb 2021 02:59:11 -0800 (PST) From: Vivek Gautam To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, iommu@lists.linux-foundation.org, virtualization@lists.linux-foundation.org Subject: [PATCH 1/2] iommu: Report domain nesting info for arm-smmu-v3 Date: Fri, 12 Feb 2021 16:28:58 +0530 Message-Id: <20210212105859.8445-2-vivek.gautam@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210212105859.8445-1-vivek.gautam@arm.com> References: <20210212105859.8445-1-vivek.gautam@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210212_055924_632909_BDCC935C X-CRM114-Status: GOOD ( 12.02 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: jean-philippe@linaro.org, kevin.tian@intel.com, jacob.jun.pan@linux.intel.com, mst@redhat.com, joro@8bytes.org, will.deacon@arm.com, shameerali.kolothum.thodi@huawei.com, eric.auger@redhat.com, alex.williamson@redhat.com, yi.l.liu@intel.com, Lorenzo.Pieralisi@arm.com, robin.murphy@arm.com MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add a vendor specific structure for domain nesting info for arm smmu-v3, and necessary info fields required to populate stage1 page tables. Signed-off-by: Vivek Gautam --- include/uapi/linux/iommu.h | 31 +++++++++++++++++++++++++------ 1 file changed, 25 insertions(+), 6 deletions(-) diff --git a/include/uapi/linux/iommu.h b/include/uapi/linux/iommu.h index 4d3d988fa353..5f059bcf7720 100644 --- a/include/uapi/linux/iommu.h +++ b/include/uapi/linux/iommu.h @@ -323,7 +323,8 @@ struct iommu_gpasid_bind_data { #define IOMMU_GPASID_BIND_VERSION_1 1 __u32 version; #define IOMMU_PASID_FORMAT_INTEL_VTD 1 -#define IOMMU_PASID_FORMAT_LAST 2 +#define IOMMU_PASID_FORMAT_ARM_SMMU_V3 2 +#define IOMMU_PASID_FORMAT_LAST 3 __u32 format; __u32 addr_width; #define IOMMU_SVA_GPASID_VAL (1 << 0) /* guest PASID valid */ @@ -409,6 +410,21 @@ struct iommu_nesting_info_vtd { __u64 ecap_reg; }; +/* + * struct iommu_nesting_info_arm_smmuv3 - Arm SMMU-v3 nesting info. + */ +struct iommu_nesting_info_arm_smmuv3 { + __u32 flags; + __u16 asid_bits; + + /* Arm LPAE page table format as per kernel */ +#define ARM_PGTBL_32_LPAE_S1 (0x0) +#define ARM_PGTBL_64_LPAE_S1 (0x2) + __u8 pgtbl_fmt; + + __u8 padding[9]; +}; + /* * struct iommu_nesting_info - Information for nesting-capable IOMMU. * userspace should check it before using @@ -445,11 +461,13 @@ struct iommu_nesting_info_vtd { * +---------------+------------------------------------------------------+ * * data struct types defined for @format: - * +================================+=====================================+ - * | @format | data struct | - * +================================+=====================================+ - * | IOMMU_PASID_FORMAT_INTEL_VTD | struct iommu_nesting_info_vtd | - * +--------------------------------+-------------------------------------+ + * +================================+======================================+ + * | @format | data struct | + * +================================+======================================+ + * | IOMMU_PASID_FORMAT_INTEL_VTD | struct iommu_nesting_info_vtd | + * +---------------+-------------------------------------------------------+ + * | IOMMU_PASID_FORMAT_ARM_SMMU_V3 | struct iommu_nesting_info_arm_smmuv3 | + * +--------------------------------+--------------------------------------+ * */ struct iommu_nesting_info { @@ -466,6 +484,7 @@ struct iommu_nesting_info { /* Vendor specific data */ union { struct iommu_nesting_info_vtd vtd; + struct iommu_nesting_info_arm_smmuv3 smmuv3; } vendor; };