From patchwork Thu Nov 26 01:18:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 11932421 X-Patchwork-Delegate: bhelgaas@google.com 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,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 3AABDC56202 for ; Thu, 26 Nov 2020 01:18:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C6B7B20770 for ; Thu, 26 Nov 2020 01:18:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="XWDiV514" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731025AbgKZBSd (ORCPT ); Wed, 25 Nov 2020 20:18:33 -0500 Received: from mail.kernel.org ([198.145.29.99]:38954 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729679AbgKZBSc (ORCPT ); Wed, 25 Nov 2020 20:18:32 -0500 Received: from localhost (129.sub-72-107-112.myvzw.com [72.107.112.129]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D8DDE206C0; Thu, 26 Nov 2020 01:18:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606353512; bh=dHtsajsDbPsgVqpRmx+WnSBsoLEytPlLs/JejUB6Lak=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XWDiV514kYZAJ8LqOnSg0lx8mF65C0l6BBXC37tQPw75NgIiXHTsF99RBsgn+V585 jFeazWAVDUUrGxM7T02b6+qEIZkpzA97ZODChDBh2xeop5bJff8uQtHvIVKYXFMp5Y 07S+B4TIvNmxRCnFsc/RdPwVdjo2ikPcwbnYZbnE= From: Bjorn Helgaas To: Kuppuswamy Sathyanarayanan Cc: ashok.raj@intel.com, knsathya@kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Helgaas , Olof Johansson Subject: [PATCH 1/5] PCI/DPC: Ignore devices with no AER Capability Date: Wed, 25 Nov 2020 19:18:12 -0600 Message-Id: <20201126011816.711106-2-helgaas@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201126011816.711106-1-helgaas@kernel.org> References: <20201126011816.711106-1-helgaas@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Bjorn Helgaas Downstream Ports may support DPC regardless of whether they support AER (see PCIe r5.0, sec 6.2.10.2). Previously, if the user booted with "pcie_ports=dpc-native", it was possible for dpc_probe() to succeed even if the device had no AER Capability, but dpc_get_aer_uncorrect_severity() depends on the AER Capability. dpc_probe() previously failed if: !pcie_aer_is_native(pdev) && !pcie_ports_dpc_native !(pcie_aer_is_native() || pcie_ports_dpc_native) # by De Morgan's law so it succeeded if: pcie_aer_is_native() || pcie_ports_dpc_native Fail dpc_probe() if the device has no AER Capability. Signed-off-by: Bjorn Helgaas Cc: Olof Johansson --- drivers/pci/pcie/dpc.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c index e05aba86a317..ed0dbc43d018 100644 --- a/drivers/pci/pcie/dpc.c +++ b/drivers/pci/pcie/dpc.c @@ -287,6 +287,9 @@ static int dpc_probe(struct pcie_device *dev) int status; u16 ctl, cap; + if (!pdev->aer_cap) + return -ENOTSUPP; + if (!pcie_aer_is_native(pdev) && !pcie_ports_dpc_native) return -ENOTSUPP; From patchwork Thu Nov 26 01:18:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 11932423 X-Patchwork-Delegate: bhelgaas@google.com 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 BC52DC64E75 for ; Thu, 26 Nov 2020 01:18:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5D813206C0 for ; Thu, 26 Nov 2020 01:18:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="SLg+9yV6" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731101AbgKZBSf (ORCPT ); Wed, 25 Nov 2020 20:18:35 -0500 Received: from mail.kernel.org ([198.145.29.99]:38988 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729679AbgKZBSf (ORCPT ); Wed, 25 Nov 2020 20:18:35 -0500 Received: from localhost (129.sub-72-107-112.myvzw.com [72.107.112.129]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3AF8C2075A; Thu, 26 Nov 2020 01:18:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606353514; bh=kayfTHjVZqi4HstmiwYn3EZrEONOA4LIw0UnN/vjhkY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SLg+9yV6k4tyTHm7tx/rGfvCRiGfB5pWKCeAKq2m+m+ZWR7y2hbkucaitNMcwMF4+ w2LFC/eod7G7zXVV1S9L/L0YsWrt8bUau2m9gNE+4WAH2A7lJ7Qfbzvnm2cr3CQY7K ioFJ7RC8c5ysY12GOcOQA6wu+Oaq/rvMFADCt2r8= From: Bjorn Helgaas To: Kuppuswamy Sathyanarayanan Cc: ashok.raj@intel.com, knsathya@kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Helgaas Subject: [PATCH 2/5] PCI: Assume control of portdrv-related features only when portdrv enabled Date: Wed, 25 Nov 2020 19:18:13 -0600 Message-Id: <20201126011816.711106-3-helgaas@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201126011816.711106-1-helgaas@kernel.org> References: <20201126011816.711106-1-helgaas@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Kuppuswamy Sathyanarayanan Native control of PME, AER, DPC, and PCIe hotplug depends on the portdrv, so default to native handling of them only when CONFIG_PCIEPORTBUS is enabled. Native control LTR and SHPC hotplug does not depend on portdrv, so we can always take control of them unless some platform interface, e.g., _OSC, tells us otherwise. [bhelgaas: commit log] Link: https://lore.kernel.org/r/fcbe8a624166a1101a755edfef44a185d32ff493.1603766889.git.sathyanarayanan.kuppuswamy@linux.intel.com Signed-off-by: Kuppuswamy Sathyanarayanan Signed-off-by: Bjorn Helgaas --- drivers/pci/probe.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 4289030b0fff..756fa60ca708 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -588,12 +588,14 @@ static void pci_init_host_bridge(struct pci_host_bridge *bridge) * may implement its own AER handling and use _OSC to prevent the * OS from interfering. */ +#ifdef CONFIG_PCIEPORTBUS bridge->native_aer = 1; bridge->native_pcie_hotplug = 1; - bridge->native_shpc_hotplug = 1; bridge->native_pme = 1; - bridge->native_ltr = 1; bridge->native_dpc = 1; +#endif + bridge->native_ltr = 1; + bridge->native_shpc_hotplug = 1; device_initialize(&bridge->dev); } From patchwork Thu Nov 26 01:18:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 11932425 X-Patchwork-Delegate: bhelgaas@google.com 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 34C0AC64E7B for ; Thu, 26 Nov 2020 01:18:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DFDD2206C0 for ; Thu, 26 Nov 2020 01:18:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="ohIhRLK3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731247AbgKZBSh (ORCPT ); Wed, 25 Nov 2020 20:18:37 -0500 Received: from mail.kernel.org ([198.145.29.99]:39018 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729679AbgKZBSh (ORCPT ); Wed, 25 Nov 2020 20:18:37 -0500 Received: from localhost (129.sub-72-107-112.myvzw.com [72.107.112.129]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EAB0C206C0; Thu, 26 Nov 2020 01:18:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606353517; bh=W0IDxtNSZluyY0RNsqAVql+9uNOI0hy5q5KT/u4zp+4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ohIhRLK3ABQtGMXyhaD2/6vOUSEfUrmSkPnZ90oLjwJb3E3HD+xuOpWn+SMt2PYaW S/LkDgJjvt+QC5egEcds/oB1gnMknBYpI1JEjF3awgpDee2FKGME5UTWQAtc/13YiN kxHhg4wj6QH+iBbmjOxF9L38DuxYrZVfP5SDnTcU= From: Bjorn Helgaas To: Kuppuswamy Sathyanarayanan Cc: ashok.raj@intel.com, knsathya@kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Helgaas Subject: [PATCH 3/5] PCI/ACPI: Tidy _OSC control bit checking Date: Wed, 25 Nov 2020 19:18:14 -0600 Message-Id: <20201126011816.711106-4-helgaas@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201126011816.711106-1-helgaas@kernel.org> References: <20201126011816.711106-1-helgaas@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Kuppuswamy Sathyanarayanan Add OSC_OWNER() helper to prettify checking the _OSC control bits to learn whether the platform has granted us control of PCI features. No functional change intended. [bhelgaas: split to separate patch, commit log] Signed-off-by: Kuppuswamy Sathyanarayanan Signed-off-by: Bjorn Helgaas --- drivers/acpi/pci_root.c | 29 +++++++++++++++++------------ 1 file changed, 17 insertions(+), 12 deletions(-) diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index c12b5fb3e8fb..6db071038fd5 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -876,6 +876,12 @@ static void acpi_pci_root_release_info(struct pci_host_bridge *bridge) __acpi_pci_root_release_info(bridge->release_data); } +#define OSC_OWNER(ctrl, bit, flag) \ + do { \ + if (!(ctrl & bit)) \ + flag = 0; \ + } while (0) + struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root, struct acpi_pci_root_ops *ops, struct acpi_pci_root_info *info, @@ -887,6 +893,7 @@ struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root, struct pci_bus *bus; struct pci_host_bridge *host_bridge; union acpi_object *obj; + u32 ctrl; info->root = root; info->bridge = device; @@ -912,18 +919,16 @@ struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root, goto out_release_info; host_bridge = to_pci_host_bridge(bus->bridge); - if (!(root->osc_control_set & OSC_PCI_EXPRESS_NATIVE_HP_CONTROL)) - host_bridge->native_pcie_hotplug = 0; - if (!(root->osc_control_set & OSC_PCI_SHPC_NATIVE_HP_CONTROL)) - host_bridge->native_shpc_hotplug = 0; - if (!(root->osc_control_set & OSC_PCI_EXPRESS_AER_CONTROL)) - host_bridge->native_aer = 0; - if (!(root->osc_control_set & OSC_PCI_EXPRESS_PME_CONTROL)) - host_bridge->native_pme = 0; - if (!(root->osc_control_set & OSC_PCI_EXPRESS_LTR_CONTROL)) - host_bridge->native_ltr = 0; - if (!(root->osc_control_set & OSC_PCI_EXPRESS_DPC_CONTROL)) - host_bridge->native_dpc = 0; + + ctrl = root->osc_control_set; + OSC_OWNER(ctrl, OSC_PCI_EXPRESS_NATIVE_HP_CONTROL, + host_bridge->native_pcie_hotplug); + OSC_OWNER(ctrl, OSC_PCI_SHPC_NATIVE_HP_CONTROL, + host_bridge->native_shpc_hotplug); + OSC_OWNER(ctrl, OSC_PCI_EXPRESS_AER_CONTROL, host_bridge->native_aer); + OSC_OWNER(ctrl, OSC_PCI_EXPRESS_PME_CONTROL, host_bridge->native_pme); + OSC_OWNER(ctrl, OSC_PCI_EXPRESS_LTR_CONTROL, host_bridge->native_ltr); + OSC_OWNER(ctrl, OSC_PCI_EXPRESS_DPC_CONTROL, host_bridge->native_dpc); /* * Evaluate the "PCI Boot Configuration" _DSM Function. If it From patchwork Thu Nov 26 01:18:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 11932429 X-Patchwork-Delegate: bhelgaas@google.com 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 745E6C56201 for ; Thu, 26 Nov 2020 01:18:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1C8CA2075A for ; Thu, 26 Nov 2020 01:18:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="QQ06VSvN" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731348AbgKZBSk (ORCPT ); Wed, 25 Nov 2020 20:18:40 -0500 Received: from mail.kernel.org ([198.145.29.99]:39048 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729679AbgKZBSk (ORCPT ); Wed, 25 Nov 2020 20:18:40 -0500 Received: from localhost (129.sub-72-107-112.myvzw.com [72.107.112.129]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 07A862075A; Thu, 26 Nov 2020 01:18:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606353519; bh=FIb1CDvMAVtb9xli5yijL5vfoeOH9CPq+2c8Jxi9wQA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QQ06VSvN5s5+pO/sZK14XZSsgfwPzxeIhKG3wMZn6bBSs9dvU3reuv6rY7uzdRz8m lhUoB93KLLfBJOzD1Y9YQ0zMOi28qWiyLzt713vmJOC1V0MKir/eRoeZh68oueoxXh 7yVf4zvorL2K4GHMvF1ciWybw5hn3ZnsN9z1OxQE= From: Bjorn Helgaas To: Kuppuswamy Sathyanarayanan Cc: ashok.raj@intel.com, knsathya@kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Helgaas Subject: [PATCH 4/5] PCI/ACPI: Centralize pcie_ports_native checking Date: Wed, 25 Nov 2020 19:18:15 -0600 Message-Id: <20201126011816.711106-5-helgaas@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201126011816.711106-1-helgaas@kernel.org> References: <20201126011816.711106-1-helgaas@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Kuppuswamy Sathyanarayanan If the user booted with "pcie_ports=native", we take control of the PCIe features unconditionally, regardless of what _OSC says. Centralize the testing of pcie_ports_native in acpi_pci_root_create(), where we interpret the _OSC results, so other places only have to check host_bridge->native_X and we don't have to sprinkle tests of pcie_ports_native everywhere. [bhelgaas: commit log, rework OSC_PCI_EXPRESS_CONTROL_MASKS, logging] Link: https://lore.kernel.org/r/bc87c9e675118960949043a832bed86bc22becbd.1603766889.git.sathyanarayanan.kuppuswamy@linux.intel.com Signed-off-by: Kuppuswamy Sathyanarayanan Signed-off-by: Bjorn Helgaas --- drivers/acpi/pci_root.c | 19 +++++++++++++++++++ drivers/pci/hotplug/pciehp_core.c | 2 +- drivers/pci/pci-acpi.c | 3 --- drivers/pci/pcie/aer.c | 2 +- drivers/pci/pcie/portdrv_core.c | 9 +++------ 5 files changed, 24 insertions(+), 11 deletions(-) diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 6db071038fd5..36142ed7b8f8 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -882,6 +882,8 @@ static void acpi_pci_root_release_info(struct pci_host_bridge *bridge) flag = 0; \ } while (0) +#define FLAG(x) ((x) ? '+' : '-') + struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root, struct acpi_pci_root_ops *ops, struct acpi_pci_root_info *info, @@ -930,6 +932,23 @@ struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root, OSC_OWNER(ctrl, OSC_PCI_EXPRESS_LTR_CONTROL, host_bridge->native_ltr); OSC_OWNER(ctrl, OSC_PCI_EXPRESS_DPC_CONTROL, host_bridge->native_dpc); + if (pcie_ports_native) { + dev_info(&root->device->dev, "Taking control of PCIe-related features because \"pcie_ports=native\" specified; may conflict with firmware\n"); + host_bridge->native_pcie_hotplug = 1; + host_bridge->native_aer = 1; + host_bridge->native_pme = 1; + host_bridge->native_ltr = 1; + host_bridge->native_dpc = 1; + } + + dev_info(&root->device->dev, "OS native features: SHPCHotplug%c PCIeHotplug%c PME%c AER%c DPC%c LTR%c\n", + FLAG(host_bridge->native_shpc_hotplug), + FLAG(host_bridge->native_pcie_hotplug), + FLAG(host_bridge->native_pme), + FLAG(host_bridge->native_aer), + FLAG(host_bridge->native_dpc), + FLAG(host_bridge->native_ltr)); + /* * Evaluate the "PCI Boot Configuration" _DSM Function. If it * exists and returns 0, we must preserve any PCI resource diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c index ad3393930ecb..d1831e6bf60a 100644 --- a/drivers/pci/hotplug/pciehp_core.c +++ b/drivers/pci/hotplug/pciehp_core.c @@ -256,7 +256,7 @@ static bool pme_is_native(struct pcie_device *dev) const struct pci_host_bridge *host; host = pci_find_host_bridge(dev->port->bus); - return pcie_ports_native || host->native_pme; + return host->native_pme; } static void pciehp_disable_interrupt(struct pcie_device *dev) diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index bf03648c2072..a84f75ec6df8 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -800,9 +800,6 @@ bool pciehp_is_native(struct pci_dev *bridge) if (!(slot_cap & PCI_EXP_SLTCAP_HPC)) return false; - if (pcie_ports_native) - return true; - host = pci_find_host_bridge(bridge->bus); return host->native_pcie_hotplug; } diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index 65dff5f3457a..79bb441139c2 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -219,7 +219,7 @@ int pcie_aer_is_native(struct pci_dev *dev) if (!dev->aer_cap) return 0; - return pcie_ports_native || host->native_aer; + return host->native_aer; } int pci_enable_pcie_error_reporting(struct pci_dev *dev) diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index 50a9522ab07d..2a1190e8db60 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -208,8 +208,7 @@ static int get_port_device_capability(struct pci_dev *dev) struct pci_host_bridge *host = pci_find_host_bridge(dev->bus); int services = 0; - if (dev->is_hotplug_bridge && - (pcie_ports_native || host->native_pcie_hotplug)) { + if (host->native_pcie_hotplug && dev->is_hotplug_bridge) { services |= PCIE_PORT_SERVICE_HP; /* @@ -221,8 +220,7 @@ static int get_port_device_capability(struct pci_dev *dev) } #ifdef CONFIG_PCIEAER - if (dev->aer_cap && pci_aer_available() && - (pcie_ports_native || host->native_aer)) { + if (host->native_aer && dev->aer_cap && pci_aer_available()) { services |= PCIE_PORT_SERVICE_AER; /* @@ -238,8 +236,7 @@ static int get_port_device_capability(struct pci_dev *dev) * Event Collectors can also generate PMEs, but we don't handle * those yet. */ - if (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT && - (pcie_ports_native || host->native_pme)) { + if (host->native_pme && pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT) { services |= PCIE_PORT_SERVICE_PME; /* From patchwork Thu Nov 26 01:18:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Helgaas X-Patchwork-Id: 11932427 X-Patchwork-Delegate: bhelgaas@google.com 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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT 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 40EE4C64E8A for ; Thu, 26 Nov 2020 01:18:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CC02D206C0 for ; Thu, 26 Nov 2020 01:18:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="xaAJkYKY" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731403AbgKZBSm (ORCPT ); Wed, 25 Nov 2020 20:18:42 -0500 Received: from mail.kernel.org ([198.145.29.99]:39078 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729679AbgKZBSl (ORCPT ); Wed, 25 Nov 2020 20:18:41 -0500 Received: from localhost (129.sub-72-107-112.myvzw.com [72.107.112.129]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EAEF1206C0; Thu, 26 Nov 2020 01:18:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1606353521; bh=fog10W20ZnIu55AcNV7BiDI5Wh8kOel1mDnmrzT6wIg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=xaAJkYKYC6amA26QUYRADxqBXArBDibtJAKAbIoQ6txu7BH8K38JeLpuW5xo8SLh9 9ZbqTSMX9KaCstt58b3jI1R4Lyj1RBuFjk1dJ3qsaTeLFwe9JwHDrsDfgRWnA7ISUq AyhvbKB/54XbkZ2wlKNKfQ9awAq6Kw8JwQVWuREA= From: Bjorn Helgaas To: Kuppuswamy Sathyanarayanan Cc: ashok.raj@intel.com, knsathya@kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Bjorn Helgaas Subject: [PATCH 5/5] PCI/ACPI: Centralize pci_aer_available() checking Date: Wed, 25 Nov 2020 19:18:16 -0600 Message-Id: <20201126011816.711106-6-helgaas@kernel.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20201126011816.711106-1-helgaas@kernel.org> References: <20201126011816.711106-1-helgaas@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Bjorn Helgaas Check pci_aer_available() in acpi_pci_root_create() when we're interpreting _OSC results so host_bridge->native_aer becomes the single way to determine whether we control AER capabilities. Signed-off-by: Bjorn Helgaas --- drivers/acpi/pci_root.c | 3 +++ drivers/pci/pcie/portdrv_core.c | 2 +- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 36142ed7b8f8..f9969b86d3b6 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -941,6 +941,9 @@ struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root, host_bridge->native_dpc = 1; } + if (!pci_aer_available()) + host_bridge->native_aer = 0; + dev_info(&root->device->dev, "OS native features: SHPCHotplug%c PCIeHotplug%c PME%c AER%c DPC%c LTR%c\n", FLAG(host_bridge->native_shpc_hotplug), FLAG(host_bridge->native_pcie_hotplug), diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index 2a1190e8db60..48c14c2471ef 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -220,7 +220,7 @@ static int get_port_device_capability(struct pci_dev *dev) } #ifdef CONFIG_PCIEAER - if (host->native_aer && dev->aer_cap && pci_aer_available()) { + if (host->native_aer && dev->aer_cap) { services |= PCIE_PORT_SERVICE_AER; /*