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=-8.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=unavailable 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 B28B9C433EC for ; Tue, 28 Jul 2020 12:48:49 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 7EA58206D7 for ; Tue, 28 Jul 2020 12:48:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7EA58206D7 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by hemlock.osuosl.org (Postfix) with ESMTP id 5563D87ED9; Tue, 28 Jul 2020 12:48:49 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id JgTWg3jmkTrO; Tue, 28 Jul 2020 12:48:48 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 8CAAD87E99; Tue, 28 Jul 2020 12:48:48 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 74A11C0050; Tue, 28 Jul 2020 12:48:48 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id C39C9C004D for ; Tue, 28 Jul 2020 12:48:46 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id A3BED233ED for ; Tue, 28 Jul 2020 12:48:46 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id oNhTn3YWn+Kd for ; Tue, 28 Jul 2020 12:48:45 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by silver.osuosl.org (Postfix) with ESMTP id 2350B2013C for ; Tue, 28 Jul 2020 12:48:45 +0000 (UTC) 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 5ED431FB; Tue, 28 Jul 2020 05:48:44 -0700 (PDT) Received: from e121166-lin.cambridge.arm.com (e121166-lin.cambridge.arm.com [10.1.196.255]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 2DD4A3F718; Tue, 28 Jul 2020 05:48:42 -0700 (PDT) Date: Tue, 28 Jul 2020 13:48:35 +0100 From: Lorenzo Pieralisi To: linux-arm-kernel@lists.infradead.org, "Rafael J. Wysocki" Subject: Re: [PATCH v2 05/12] ACPI/IORT: Add an input ID to acpi_dma_configure() Message-ID: <20200728124835.GA14596@e121166-lin.cambridge.arm.com> 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> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200715091326.GA30074@e121166-lin.cambridge.arm.com> User-Agent: Mutt/1.9.4 (2018-02-28) Cc: devicetree@vger.kernel.org, Marc Zyngier , Makarand Pawagi , Catalin Marinas , Hanjun Guo , linux-pci@vger.kernel.org, Robin Murphy , linux-acpi@vger.kernel.org, iommu@lists.linux-foundation.org, Rob Herring , Sudeep Holla , Bjorn Helgaas , Will Deacon , Diana Craciun 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 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. > > Hi Rafael, > > are you OK with ACPI core changes in this patch ? > > Please let me know, thanks. Hi Rafael, gentle ping, I think we are missing v5.9, we would need your feedback on this please. Thanks, Lorenzo _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu