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=-7.0 required=3.0 tests=BAYES_00,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 93E97C433E3 for ; Tue, 28 Jul 2020 13:00:43 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) (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 74A9F20714 for ; Tue, 28 Jul 2020 13:00:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 74A9F20714 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id 41BF787F44; Tue, 28 Jul 2020 13:00:43 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id dQPDzAcV-172; Tue, 28 Jul 2020 13:00:42 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by whitealder.osuosl.org (Postfix) with ESMTP id 09C2F8784F; Tue, 28 Jul 2020 13:00:42 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id E5DCEC0050; Tue, 28 Jul 2020 13:00:41 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) by lists.linuxfoundation.org (Postfix) with ESMTP id 0E57EC004D for ; Tue, 28 Jul 2020 13:00:41 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 0ACA786538 for ; Tue, 28 Jul 2020 13:00:41 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id OC5_4gtDPMu8 for ; Tue, 28 Jul 2020 13:00:40 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mail-ot1-f65.google.com (mail-ot1-f65.google.com [209.85.210.65]) by fraxinus.osuosl.org (Postfix) with ESMTPS id 4A5D4864F2 for ; Tue, 28 Jul 2020 13:00:40 +0000 (UTC) Received: by mail-ot1-f65.google.com with SMTP id v6so4016040ota.13 for ; Tue, 28 Jul 2020 06:00:40 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=gQxWRGpK+7J5zPyI+x2auaL/xO1F0G6D2eChmPkLka4=; b=AMbeXh2wvpeaDn6cIST8epLKfBEs/fYO6bUIcUijfEHjv9VSM7BFQ86bbeaZkBxsFa JUOo74tS+A/a6RBd0uKdTQrM3MJ5XpVd/oSl+fJw6+D/AQ2fKBIV1W45ATHUpubj+Zvm IzGR5rO7PLHqKig4subipHvY0tXY919Sk4CJH7JGeidLQ6os9ZFq2RYx2EtPTyAkZxPS 6624Z4qcKmVmIc2VdDGYjoWJVCVBfn4hFWBPC3nEZk5zveHoCGTG5jkOaVMNDM26SRnW C8mpuQrby3itdg44JEeiIv0gl4tIpCHWj/AsnH1uw5KvSN9bZ+BqKIOPPd0DPww08her YEog== X-Gm-Message-State: AOAM530R9VHlxGN8mEs3/9yOJ6oc/INiDsPuuqnTVHoTTIRd/HYeZzHu 3yaE5NwisQTvvKJibxO+C4Lt1RckzUTzkZcSuio= X-Google-Smtp-Source: ABdhPJyjkPbmbdSrKoRnxAHeoGfwpBzGL7q9+aCpuvVIqlYJ3d/ztRYP2FQgQ2jADdtZcBOiq9wpwzTBFyKVN4fiMIs= X-Received: by 2002:a9d:590a:: with SMTP id t10mr24293860oth.262.1595941239566; Tue, 28 Jul 2020 06:00:39 -0700 (PDT) MIME-Version: 1.0 References: <20200521130008.8266-1-lorenzo.pieralisi@arm.com> <20200619082013.13661-1-lorenzo.pieralisi@arm.com> <20200619082013.13661-6-lorenzo.pieralisi@arm.com> <20200709093514.GC18149@e121166-lin.cambridge.arm.com> <20200715091326.GA30074@e121166-lin.cambridge.arm.com> <20200728124835.GA14596@e121166-lin.cambridge.arm.com> In-Reply-To: <20200728124835.GA14596@e121166-lin.cambridge.arm.com> From: "Rafael J. Wysocki" Date: Tue, 28 Jul 2020 15:00:28 +0200 Message-ID: Subject: Re: [PATCH v2 05/12] ACPI/IORT: Add an input ID to acpi_dma_configure() To: Lorenzo Pieralisi Cc: "devicetree@vger.kernel.org" , Marc Zyngier , Makarand Pawagi , Linux PCI , Catalin Marinas , Hanjun Guo , "Rafael J. Wysocki" , Robin Murphy , ACPI Devel Maling List , "open list:AMD IOMMU \(AMD-VI\)" , Rob Herring , Sudeep Holla , Bjorn Helgaas , Diana Craciun , Will Deacon , Linux ARM X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Tue, Jul 28, 2020 at 2:48 PM Lorenzo Pieralisi wrote: > > On Wed, Jul 15, 2020 at 10:13:26AM +0100, Lorenzo Pieralisi wrote: > > On Thu, Jul 09, 2020 at 10:35:14AM +0100, Lorenzo Pieralisi wrote: > > > On Fri, Jun 19, 2020 at 09:20:06AM +0100, Lorenzo Pieralisi wrote: > > > > Some HW devices are created as child devices of proprietary busses, > > > > that have a bus specific policy defining how the child devices > > > > wires representing the devices ID are translated into IOMMU and > > > > IRQ controllers device IDs. > > > > > > > > Current IORT code provides translations for: > > > > > > > > - PCI devices, where the device ID is well identified at bus level > > > > as the requester ID (RID) > > > > - Platform devices that are endpoint devices where the device ID is > > > > retrieved from the ACPI object IORT mappings (Named components single > > > > mappings). A platform device is represented in IORT as a named > > > > component node > > > > > > > > For devices that are child devices of proprietary busses the IORT > > > > firmware represents the bus node as a named component node in IORT > > > > and it is up to that named component node to define in/out bus > > > > specific ID translations for the bus child devices that are > > > > allocated and created in a bus specific manner. > > > > > > > > In order to make IORT ID translations available for proprietary > > > > bus child devices, the current ACPI (and IORT) code must be > > > > augmented to provide an additional ID parameter to acpi_dma_configure() > > > > representing the child devices input ID. This ID is bus specific > > > > and it is retrieved in bus specific code. > > > > > > > > By adding an ID parameter to acpi_dma_configure(), the IORT > > > > code can map the child device ID to an IOMMU stream ID through > > > > the IORT named component representing the bus in/out ID mappings. > > > > > > > > Signed-off-by: Lorenzo Pieralisi > > > > Cc: Will Deacon > > > > Cc: Hanjun Guo > > > > Cc: Sudeep Holla > > > > Cc: Catalin Marinas > > > > Cc: Robin Murphy > > > > Cc: "Rafael J. Wysocki" > > > > --- > > > > drivers/acpi/arm64/iort.c | 59 +++++++++++++++++++++++++++++---------- > > > > drivers/acpi/scan.c | 8 ++++-- > > > > include/acpi/acpi_bus.h | 9 ++++-- > > > > include/linux/acpi.h | 7 +++++ > > > > include/linux/acpi_iort.h | 7 +++-- > > > > 5 files changed, 67 insertions(+), 23 deletions(-) > > > > > > Hi Rafael, > > > > > > just to ask if the ACPI core changes in this patch are OK with you, > > > thank you very much. Sorry for the delay, I was offline last week. > > Hi Rafael, > > > > are you OK with ACPI core changes in this patch ? Yes, I am. Please feel free to route it through whatever tree you think would be appropriate. Thanks! _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu