From patchwork Sat Jan 23 01:11:08 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuppuswamy Sathyanarayanan X-Patchwork-Id: 1430622 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4DMyrK2cpcz9sVF for ; Sat, 23 Jan 2021 12:16:17 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726440AbhAWBQK (ORCPT ); Fri, 22 Jan 2021 20:16:10 -0500 Received: from mga04.intel.com ([192.55.52.120]:26863 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726381AbhAWBQD (ORCPT ); Fri, 22 Jan 2021 20:16:03 -0500 IronPort-SDR: BBT4I6a6o8su3JlSOcJFJDu3YPkMqYC1SRd96Zvur3qOXH1u8jXIRkMq3sLCiYk59GPIvWvMio FJCGOVTblFqw== X-IronPort-AV: E=McAfee;i="6000,8403,9872"; a="176962173" X-IronPort-AV: E=Sophos;i="5.79,368,1602572400"; d="scan'208";a="176962173" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Jan 2021 17:11:20 -0800 IronPort-SDR: I1QdyjMVMsE07R9pya9Y/gl4ub+rWu5kkiaW1KaPtY/oTQTHU8PHBtTFaEXSLTphYJEN9ytThl Pj9ngkKRDTDA== X-IronPort-AV: E=Sophos;i="5.79,368,1602572400"; d="scan'208";a="386084669" Received: from usundar-mobl1.amr.corp.intel.com (HELO skuppusw-mobl5.amr.corp.intel.com) ([10.212.36.142]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Jan 2021 17:11:19 -0800 From: Kuppuswamy Sathyanarayanan To: bhelgaas@google.com Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, ashok.raj@intel.com, sathyanarayanan.kuppuswamy@linux.intel.com Subject: [PATCH v13 0/5] Simplify PCIe native ownership Date: Fri, 22 Jan 2021 17:11:08 -0800 Message-Id: X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Currently, PCIe capabilities ownership status is detected by verifying the status of pcie_ports_native, and _OSC negotiated results (cached in struct pci_host_bridge->native_* members). But this logic can be simplified, and we can use only struct pci_host_bridge ->native_* members to detect it. This patchset removes the distributed checks for pcie_ports_native, parameter. Changes since v12: * Rebased on top of v5.11-rc1 Changes since v11 (Bjorns update): * Add bugfix for DPC with no AER Capability * Split OSC_OWNER trivial changes from pcie_ports_native changes * Temporarily drop pcie_ports_dpc_native changes (revisit it later). Changes since v10: * Addressed format issue reported by lkp test. Changes since v9: * Rebased on top of v5.10-rc1 Changes since v8: * Simplified setting _OSC ownwership logic * Moved bridge->native_ltr out of #ifdef CONFIG_PCIEPORTBUS. Changes since v7: * Fixed "fix array_size.cocci warnings". Changes since v6: * Created new patch for CONFIG_PCIEPORTBUS check in pci_init_host_bridge(). * Added warning message for a case when pcie_ports_native overrides _OSC negotiation result. Changes since v5: * Rebased on top of v5.8-rc1 Changes since v4: * Changed the patch set title (Original link: https://lkml.org/lkml/2020/5/26/1710) * Added AER/DPC dependency logic cleanup fixes. Bjorn Helgaas (2): PCI/DPC: Ignore devices with no AER Capability PCI/ACPI: Centralize pci_aer_available() checking Kuppuswamy Sathyanarayanan (3): PCI: Assume control of portdrv-related features only when portdrv enabled PCI/ACPI: Tidy _OSC control bit checking PCI/ACPI: Centralize pcie_ports_native checking drivers/acpi/pci_root.c | 49 ++++++++++++++++++++++++------- drivers/pci/hotplug/pciehp_core.c | 2 +- drivers/pci/pci-acpi.c | 3 -- drivers/pci/pcie/aer.c | 2 +- drivers/pci/pcie/dpc.c | 3 ++ drivers/pci/pcie/portdrv_core.c | 11 +++---- drivers/pci/probe.c | 6 ++-- 7 files changed, 51 insertions(+), 25 deletions(-)