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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS,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 796ECC5519F for ; Wed, 18 Nov 2020 16:06:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 16D4F247D4 for ; Wed, 18 Nov 2020 16:06:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725446AbgKRQGa (ORCPT ); Wed, 18 Nov 2020 11:06:30 -0500 Received: from foss.arm.com ([217.140.110.172]:58334 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726089AbgKRQGa (ORCPT ); Wed, 18 Nov 2020 11:06:30 -0500 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 A54181396; Wed, 18 Nov 2020 08:06:29 -0800 (PST) Received: from red-moon.arm.com (unknown [10.57.62.8]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 037513F719; Wed, 18 Nov 2020 08:06:27 -0800 (PST) From: Lorenzo Pieralisi To: linux-pci@vger.kernel.org, Rob Herring Cc: Lorenzo Pieralisi , Gustavo Pimentel , Bjorn Helgaas , Jingoo Han , Vidya Sagar Subject: Re: [PATCH] PCI: dwc: Support multiple ATU memory regions Date: Wed, 18 Nov 2020 16:06:18 +0000 Message-Id: <160571541071.4535.5411939926220228556.b4-ty@arm.com> X-Mailer: git-send-email 2.26.1 In-Reply-To: <20201026181652.418729-1-robh@kernel.org> References: <20201026181652.418729-1-robh@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Mon, 26 Oct 2020 13:16:52 -0500, Rob Herring wrote: > The current ATU setup only supports a single memory resource which > isn't sufficient if there are also prefetchable memory regions. In order > to support multiple memory regions, we need to move away from fixed ATU > slots and rework the assignment. As there's always an ATU entry for > config space, let's assign index 0 to config space. Then we assign > memory resources to index 1 and up. Finally, if we have an I/O region > and slots remaining, we assign the I/O region last. If there aren't > remaining slots, we keep the same config and I/O space sharing. Applied to pci/dwc, thanks! [1/1] PCI: dwc: Support multiple ATU memory regions https://git.kernel.org/lpieralisi/pci/c/9f9e59a480 Thanks, Lorenzo