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 X-Spam-Level: X-Spam-Status: No, score=-9.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 58DD4C04EB8 for ; Wed, 12 Dec 2018 05:46:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 16AB02086D for ; Wed, 12 Dec 2018 05:46:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="hNkJ0s9N" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 16AB02086D Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=broadcom.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726546AbeLLFqn (ORCPT ); Wed, 12 Dec 2018 00:46:43 -0500 Received: from mail-wm1-f66.google.com ([209.85.128.66]:53286 "EHLO mail-wm1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726500AbeLLFqm (ORCPT ); Wed, 12 Dec 2018 00:46:42 -0500 Received: by mail-wm1-f66.google.com with SMTP id y1so4418526wmi.3 for ; Tue, 11 Dec 2018 21:46:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=4aT+lpIc+NJpqnZ6pq48JRajzcrSuiEPbqJBDas7aFM=; b=hNkJ0s9Nm8OfkASjOtmSpBDFwguWfVpT0QPfrdhUguj4qkvQj62N0NNuETViSSyqrA iU1mq/wR8sHku5gV8M6kcIsL2XYszCnuFGjD5VUwdl283ynfCIT1PuWrOdPvXDwjcDPK H1pkccsxROjIe65x2bT3DEB1wXzUD3pofvqcw= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=4aT+lpIc+NJpqnZ6pq48JRajzcrSuiEPbqJBDas7aFM=; b=jAZvCSZiUbzc4Ju3xEa8ia9eU+jAGyg06YerRqw/U0J6gMryFO9jEd9k/O7Js+K9KD l6J5/ui6fsACmRjjJ3qmya2+DNWkAw/JMrWSTQp0h5PZgVy74q4s/tSMmT+KrueTzt6g KwXWqhF0o6BaO0O1A7jSqoW/1bWf3pO13onfVCn1UwhoYuzvuTRRwtknb37eEBRptioN oXxlEjowuX8HJ48Lia5LwIz/oYX67gsrFXRLO3ssnu+3bI2eNnMEY3Z4vWCBafXMsYgH 8kjqI77L8yUlValj2UlYs7bjJMoYdZGda34WCc4uuyYH3nI2GtZ37oS31ICfupkhXEji YBTQ== X-Gm-Message-State: AA+aEWZp1a8PMVLM1BJCys9KyK49MJDVV+nyqAlEC5vA01vfn7p7wafi daVmqd/mtW8GHXK9r6OdN5gfgA== X-Google-Smtp-Source: AFSGD/WC/pO8MUYC1vKvP8mhgQKOmFpXuOmOPa5/1MOXw37ADAW+FKEBCzvjBAVaelSkEYb8dEh1Lw== X-Received: by 2002:a1c:888d:: with SMTP id k135mr5166553wmd.137.1544593600964; Tue, 11 Dec 2018 21:46:40 -0800 (PST) Received: from mannams-OptiPlex-7010.dhcp.broadcom.net ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id z206sm2015947wmc.18.2018.12.11.21.46.36 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 11 Dec 2018 21:46:40 -0800 (PST) From: Srinath Mannam To: Bjorn Helgaas , Robin Murphy , Joerg Roedel , Lorenzo Pieralisi , Ray Jui Cc: bcm-kernel-feedback-list@broadcom.com, linux-pci@vger.kernel.org, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org, Srinath Mannam Subject: [RFC PATCH 2/3] iommu/dma: IOVA reserve for PCI host reserve address list Date: Wed, 12 Dec 2018 11:16:08 +0530 Message-Id: <1544593569-8923-3-git-send-email-srinath.mannam@broadcom.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1544593569-8923-1-git-send-email-srinath.mannam@broadcom.com> References: <1544593569-8923-1-git-send-email-srinath.mannam@broadcom.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org PCI host has list of resource entries contain memory address range for which IOVA address mapping has to be reserve. These address ranges are the address holes in dma-ranges property. It is similar to PCI IO resources address range reserving in IOMMU for each EP connected to corresponding host. Signed-off-by: Srinath Mannam --- drivers/iommu/dma-iommu.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index 511ff9a..346da81 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -220,6 +220,14 @@ static void iova_reserve_pci_windows(struct pci_dev *dev, hi = iova_pfn(iovad, window->res->end - window->offset); reserve_iova(iovad, lo, hi); } + + /* Get reserved DMA windows from host bridge */ + resource_list_for_each_entry(window, &bridge->dma_resv) { + + lo = iova_pfn(iovad, window->res->start - window->offset); + hi = iova_pfn(iovad, window->res->end - window->offset); + reserve_iova(iovad, lo, hi); + } } static int iova_reserve_iommu_regions(struct device *dev, -- 2.7.4