From patchwork Tue Jan 28 22:16:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jordan Crouse X-Patchwork-Id: 11355279 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C2CAB13A4 for ; Tue, 28 Jan 2020 22:16:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 9660F21739 for ; Tue, 28 Jan 2020 22:16:24 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="NLdGMSlW" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726293AbgA1WQY (ORCPT ); Tue, 28 Jan 2020 17:16:24 -0500 Received: from mail25.static.mailgun.info ([104.130.122.25]:27282 "EHLO mail25.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726257AbgA1WQY (ORCPT ); Tue, 28 Jan 2020 17:16:24 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1580249783; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=FXsf/z/1DeoIKgsAIM/dfI6zvYtWCIvxuwhvpm/1k8o=; b=NLdGMSlWVAD6PMFvwgOQ8GP80ZYxTgLvqMbb/k4IcV/BtJEXgTnRzxTqwzdcT5/q6iu2Q2K/ S/TOm5UwvYcRHBlC3athb+7fp5Uejsj07itjviOdOhgVDSC650xfkpsHGrGsf+1Ge1dS3HMB tlYM2+y8rbHeOIDREcZoTmsb6Vk= X-Mailgun-Sending-Ip: 104.130.122.25 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5e30b2b3.7f907e9094c8-smtp-out-n03; Tue, 28 Jan 2020 22:16:19 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 56309C4479F; Tue, 28 Jan 2020 22:16:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from jcrouse1-lnx.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: jcrouse) by smtp.codeaurora.org (Postfix) with ESMTPSA id 29111C433A2; Tue, 28 Jan 2020 22:16:18 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 29111C433A2 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=jcrouse@codeaurora.org From: Jordan Crouse To: iommu@lists.linux-foundation.org Cc: robin.murphy@arm.com, will@kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, Joerg Roedel , linux-kernel@vger.kernel.org Subject: [PATCH v1 1/6] iommu: Add DOMAIN_ATTR_PTBASE Date: Tue, 28 Jan 2020 15:16:05 -0700 Message-Id: <1580249770-1088-2-git-send-email-jcrouse@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1580249770-1088-1-git-send-email-jcrouse@codeaurora.org> References: <1580249770-1088-1-git-send-email-jcrouse@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add an attribute to return the base address of the pagetable. This is used by auxiliary domains from arm-smmu to return the address of the pagetable to the domain so that it can set the appropriate pagetable through it's own means. Signed-off-by: Jordan Crouse --- include/linux/iommu.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/iommu.h b/include/linux/iommu.h index b14398b..0e9bcd9 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -128,6 +128,8 @@ enum iommu_attr { DOMAIN_ATTR_DMA_USE_FLUSH_QUEUE, /* Enable split pagetables (for example, TTBR1 on arm-smmu) */ DOMAIN_ATTR_SPLIT_TABLES, + /* Return the pagetable base address */ + DOMAIN_ATTR_PTBASE, DOMAIN_ATTR_MAX, };