From patchwork Fri Feb 12 10:58:59 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: 12085011 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=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 059D8C433E6 for ; Fri, 12 Feb 2021 11:00:23 +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 BC19F64E2D for ; Fri, 12 Feb 2021 11:00:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BC19F64E2D 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=ZdvPDImOeArR4LioPR3TBdLPP3T6cK8HMxaBlD41wlM=; b=AFsxriwo0d25U8QoC9TUF7ja8F 6pNH+GvymNtFA2TVYfU8XGF2hOTSscfm49U7NL0hIYH21awkoNc0TRZS4EKzaGrA0PI+opi2L2oiH la1D0gyFOE6ydZkm8J14diTGZIsD1Vv9RWEvxeK9e6mmp7VrjJUW6CYheDBM3NCK4FcZzY2jDXgE6 prXPq16c+yFHrTxt4qMCCNpA1M2VAwh+97W6Q4pa8m/jyu4a8kBUacCFTg3lm60i0tFIx8HNttCPh uQ5aBnSru9Gr1sy2eGK8ENOO2BlgVAWJazr3uZeiU3B7xsMM/LlTEmgRYwnhRoztzNOG4x3HihXQH h3n3ET2g==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1lAWAY-0005DI-Di; Fri, 12 Feb 2021 10:59:26 +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-0005C8-3f for linux-arm-kernel@lists.infradead.org; Fri, 12 Feb 2021 10:59:24 +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 6664612FC; Fri, 12 Feb 2021 02:59:20 -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 1D82A3F719; Fri, 12 Feb 2021 02:59:15 -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 2/2] iommu: arm-smmu-v3: Report domain nesting info reuqired for stage1 Date: Fri, 12 Feb 2021 16:28:59 +0530 Message-Id: <20210212105859.8445-3-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_210425_318127A0 X-CRM114-Status: GOOD ( 11.83 ) 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 Update nested domain information required for stage1 page table. Signed-off-by: Vivek Gautam --- drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 16 ++++++++++++++-- 1 file changed, 14 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 c11dd3940583..728018921fae 100644 --- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c +++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c @@ -2555,6 +2555,7 @@ static int arm_smmu_domain_nesting_info(struct arm_smmu_domain *smmu_domain, void *data) { struct iommu_nesting_info *info = (struct iommu_nesting_info *)data; + struct arm_smmu_device *smmu = smmu_domain->smmu; unsigned int size; if (!info || smmu_domain->stage != ARM_SMMU_DOMAIN_NESTED) @@ -2571,9 +2572,20 @@ static int arm_smmu_domain_nesting_info(struct arm_smmu_domain *smmu_domain, return 0; } - /* report an empty iommu_nesting_info for now */ - memset(info, 0x0, size); + /* Update the nesting info as required for stage1 page tables */ + info->addr_width = smmu->ias; + info->format = IOMMU_PASID_FORMAT_ARM_SMMU_V3; + info->features = IOMMU_NESTING_FEAT_BIND_PGTBL | + IOMMU_NESTING_FEAT_PAGE_RESP | + IOMMU_NESTING_FEAT_CACHE_INVLD; + info->pasid_bits = smmu->ssid_bits; + info->vendor.smmuv3.asid_bits = smmu->asid_bits; + info->vendor.smmuv3.pgtbl_fmt = ARM_64_LPAE_S1; + memset(&info->padding, 0x0, 12); + memset(&info->vendor.smmuv3.padding, 0x0, 9); + info->argsz = size; + return 0; }