From patchwork Thu Aug 26 07:15:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jeremy Linton X-Patchwork-Id: 12459191 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,INCLUDES_PATCH,MAILING_LIST_MULTI,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 555BBC4320A for ; Thu, 26 Aug 2021 07:16:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 34E2160ED5 for ; Thu, 26 Aug 2021 07:16:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239528AbhHZHQq (ORCPT ); Thu, 26 Aug 2021 03:16:46 -0400 Received: from foss.arm.com ([217.140.110.172]:40238 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238379AbhHZHQq (ORCPT ); Thu, 26 Aug 2021 03:16:46 -0400 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 39BC8D6E; Thu, 26 Aug 2021 00:15:59 -0700 (PDT) Received: from u200856.usa.arm.com (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id B9B3F3F5A1; Thu, 26 Aug 2021 00:15:58 -0700 (PDT) From: Jeremy Linton To: linux-pci@vger.kernel.org Cc: lorenzo.pieralisi@arm.com, nsaenz@kernel.org, bhelgaas@google.com, rjw@rjwysocki.net, lenb@kernel.org, robh@kernel.org, kw@linux.com, f.fainelli@gmail.com, bcm-kernel-feedback-list@broadcom.com, linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Jeremy Linton Subject: [PATCH v3 0/4] CM4 ACPI PCIe quirk Date: Thu, 26 Aug 2021 02:15:53 -0500 Message-Id: <20210826071557.29239-1-jeremy.linton@arm.com> X-Mailer: git-send-email 2.26.3 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The PFTF CM4 is an ACPI platform that is following the Arm PCIe SMC (DEN0115) standard because its PCIe config space isn't ECAM compliant since it is split into two parts. One part describes the root port registers, and another contains a moveable window pointing at a given device's 4K config space. Thus it doesn't have an MCFG table. As Linux doesn't support the PCI/SMC, a host bridge specific _DSD is added and associated with custom ECAM ops and cfgres. The custom cfg op selects between those two regions, as well as disallowing problematic accesses. V2->V3: Rebase to -next to pickup new MAINTAINERS entries that needed updating. Enforce _DSD property is exactly the same len as the MCFG OEM field it is overriding. More commit/comment tweaks. V1->V2: Only move register definitions to new .h file, add include guards. Change quirk namespace identifier. Update Maintainers file. A number of whitespace, grammar, etc fixes. Jeremy Linton (4): PCI: brcmstb: Break register definitions into separate header PCI: brcmstb: Add ACPI config space quirk PCI/ACPI: Add Broadcom bcm2711 MCFG quirk MAINTAINERS: Widen brcmstb PCIe file scope MAINTAINERS | 6 +- drivers/acpi/pci_mcfg.c | 17 +++ drivers/pci/controller/Makefile | 1 + drivers/pci/controller/pcie-brcmstb-acpi.c | 79 +++++++++++ drivers/pci/controller/pcie-brcmstb.c | 149 +------------------- drivers/pci/controller/pcie-brcmstb.h | 155 +++++++++++++++++++++ include/linux/pci-ecam.h | 1 + 7 files changed, 257 insertions(+), 151 deletions(-) create mode 100644 drivers/pci/controller/pcie-brcmstb-acpi.c create mode 100644 drivers/pci/controller/pcie-brcmstb.h