From patchwork Fri Jan 25 10:13:50 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Srinath Mannam X-Patchwork-Id: 1030908 X-Patchwork-Delegate: lorenzo.pieralisi@arm.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=broadcom.com Authentication-Results: ozlabs.org; dkim=pass (1024-bit key; unprotected) header.d=broadcom.com header.i=@broadcom.com header.b="OUkU7jW5"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 43mFHq0JmKz9s4s for ; Fri, 25 Jan 2019 21:14:31 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729253AbfAYKOP (ORCPT ); Fri, 25 Jan 2019 05:14:15 -0500 Received: from mail-yb1-f194.google.com ([209.85.219.194]:40506 "EHLO mail-yb1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729212AbfAYKOO (ORCPT ); Fri, 25 Jan 2019 05:14:14 -0500 Received: by mail-yb1-f194.google.com with SMTP id i6so3611560ybo.7 for ; Fri, 25 Jan 2019 02:14:14 -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=063dcY3/vP5rDMt/yMZyLAKDPwT36w8/uKywwVSqR7A=; b=OUkU7jW5T0JFjB5c1nbeePMkV51tr14zOf7WXdsd5B45p4Bd28foWEwE0WcL3pJjl8 FlYibvC8s9aUinlGQ/v1A84bDetYuMhxkrRF5F0JlZsF0oERQjwbqJaxf4VQQKwxee7d s/jLCYa7iktz9Q6rYS7yJVYA3JbU9WtyDbCl0= 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=063dcY3/vP5rDMt/yMZyLAKDPwT36w8/uKywwVSqR7A=; b=ndF4glb/czwaVxm23gOj37QOvematEnpQrOMJ/BQ3QlVNOOdZNXuASw5T0RhLZFhRB FPsKwvtCmWFie1/MzmaL1IDqSlEJ4aboEm7lTLn+Z9IiSBMPOMrV9cFmu7U+MqSMw+Qv AyIeRb9PDe4VyBXBTsFvFlileHwbl7JKPr8HU8PDOjHTQ5l+zwzc0lMGC15Dd7cYcl0E 5LL2Q01CH/x8ZppzwXbOcce9Msr8qBClfpWeMx86tWj6Qny6tZnWoFG6ilLo4ltAjwXR Mf1/gDWzgWVDt7nj8E1gmefLNFh2U5P5H+QpHhqNavntr7QyWbb2oc43jGmySIvUhjvl PwAg== X-Gm-Message-State: AJcUukcOaTDSc/nrYVp/fAqHOuEbrnhvK4CcbAsauQ2aOGNONpCKgo+a GIzha6hd8Zt2s4bqTD/R5SgBXg== X-Google-Smtp-Source: ALg8bN4bS7lzAX6NAn3Eb5Yap4JAGs/S7bRbtsHiCTSU4QWQns8Dasr+086aBZzCfltTNuydH6o/Rw== X-Received: by 2002:a25:6e42:: with SMTP id j63mr9601386ybc.302.1548411253878; Fri, 25 Jan 2019 02:14:13 -0800 (PST) Received: from mannams-OptiPlex-7010.dhcp.broadcom.net ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id x203sm11868695ywd.41.2019.01.25.02.14.09 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 25 Jan 2019 02:14:13 -0800 (PST) From: Srinath Mannam To: Bjorn Helgaas , Robin Murphy , Joerg Roedel , Lorenzo Pieralisi , poza@codeaurora.org, 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: [PATCH v3 2/3] iommu/dma: Reserve IOVA for PCI host reserve address list Date: Fri, 25 Jan 2019 15:43:50 +0530 Message-Id: <1548411231-27549-3-git-send-email-srinath.mannam@broadcom.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1548411231-27549-1-git-send-email-srinath.mannam@broadcom.com> References: <1548411231-27549-1-git-send-email-srinath.mannam@broadcom.com> Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org PCI host bridge has list of resource entries contain address ranges for which IOVA address mapping has to be reserve. These address ranges are the address holes in dma-ranges DT property. It is similar to PCI IO resources address ranges reserving in IOMMU for each EP connected to host bridge. Signed-off-by: Srinath Mannam Based-on-patch-by: Oza Pawandeep Reviewed-by: Oza Pawandeep --- 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 d19f3d6..81b591b 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -221,6 +221,14 @@ 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,