From patchwork Fri Jul 17 17:23:46 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuppuswamy Sathyanarayanan X-Patchwork-Id: 1331361 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=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4B7dJx2mHPz9sRN for ; Sat, 18 Jul 2020 03:24:17 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726104AbgGQRYP (ORCPT ); Fri, 17 Jul 2020 13:24:15 -0400 Received: from mga07.intel.com ([134.134.136.100]:31672 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726359AbgGQRX6 (ORCPT ); Fri, 17 Jul 2020 13:23:58 -0400 IronPort-SDR: GM9YVYulqGMub1YrIar5cGL9WQX2WsYmeD76xSGjti0ahokVYKd4IADXiS6a4jvQI2Pc6yl+cc ItL+xkzntDsg== X-IronPort-AV: E=McAfee;i="6000,8403,9685"; a="214353103" X-IronPort-AV: E=Sophos;i="5.75,364,1589266800"; d="scan'208";a="214353103" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jul 2020 10:23:58 -0700 IronPort-SDR: oRflC2+CQhvDN04Doxlt2CZ/wgLybqzk4toSuhH3dTRAO8C4Vlc+RElark+rPomHaYfFywIIvI zomZjPgwV/6w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,364,1589266800"; d="scan'208";a="282846751" Received: from jmharral-mobl.amr.corp.intel.com (HELO localhost.localdomain) ([10.254.77.39]) by orsmga003.jf.intel.com with ESMTP; 17 Jul 2020 10:23:57 -0700 From: sathyanarayanan.kuppuswamy@linux.intel.com 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 v7 1/5] PCI: Conditionally initialize host bridge native_* members Date: Fri, 17 Jul 2020 10:23:46 -0700 Message-Id: <30d6bfee24fd71357365965fac869401b2e962f0.1595006564.git.sathyanarayanan.kuppuswamy@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Kuppuswamy Sathyanarayanan If CONFIG_PCIEPORTBUS is not enabled in kernel then initialing struct pci_host_bridge PCIe specific native_* members to "1" is incorrect. So protect the PCIe specific member initialization with CONFIG_PCIEPORTBUS. Signed-off-by: Kuppuswamy Sathyanarayanan --- drivers/pci/probe.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 2f66988cea25..a94b97564ceb 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_shpc_hotplug = 1; device_initialize(&bridge->dev); } From patchwork Fri Jul 17 17:23:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuppuswamy Sathyanarayanan X-Patchwork-Id: 1331360 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=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4B7dJv0wwgz9sTS for ; Sat, 18 Jul 2020 03:24:15 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726873AbgGQRX7 (ORCPT ); Fri, 17 Jul 2020 13:23:59 -0400 Received: from mga07.intel.com ([134.134.136.100]:31672 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726633AbgGQRX7 (ORCPT ); Fri, 17 Jul 2020 13:23:59 -0400 IronPort-SDR: XTWJkS6XdW9Y0lkt3+HBC/EQDzBWbB7O4NGZ6QSMezPyfn5ftlanCU6PIjVKX9aLncPEY3HN4S u47zIxVRNlow== X-IronPort-AV: E=McAfee;i="6000,8403,9685"; a="214353104" X-IronPort-AV: E=Sophos;i="5.75,364,1589266800"; d="scan'208";a="214353104" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jul 2020 10:23:58 -0700 IronPort-SDR: twhhc1q08mh+16A8V2grDesgfIV3GusRO7mnRVS/0dshX1xj+O/pdR1CI8MF52Z2CpCurnYp3e 472fQwDHx3pg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,364,1589266800"; d="scan'208";a="282846755" Received: from jmharral-mobl.amr.corp.intel.com (HELO localhost.localdomain) ([10.254.77.39]) by orsmga003.jf.intel.com with ESMTP; 17 Jul 2020 10:23:58 -0700 From: sathyanarayanan.kuppuswamy@linux.intel.com 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 v7 2/5] ACPI/PCI: Ignore _OSC negotiation result if pcie_ports_native is set. Date: Fri, 17 Jul 2020 10:23:47 -0700 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Kuppuswamy Sathyanarayanan pcie_ports_native is set only if user requests native handling of PCIe capabilities via pcie_port_setup command line option. User input takes precedence over _OSC based control negotiation result. So consider the _OSC negotiated result only if pcie_ports_native is unset. Also, since struct pci_host_bridge ->native_* members caches the ownership status of various PCIe capabilities, use them instead of distributed checks for pcie_ports_native. Signed-off-by: Kuppuswamy Sathyanarayanan Reported-by: kernel test robot --- drivers/acpi/pci_root.c | 62 ++++++++++++++++++++++++++----- 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, 57 insertions(+), 21 deletions(-) diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index f90e841c59f5..a82069d064fe 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -145,6 +145,18 @@ static struct pci_osc_bit_struct pci_osc_control_bit[] = { { OSC_PCI_EXPRESS_DPC_CONTROL, "DPC" }, }; +static char *get_osc_desc(u32 bit) +{ + int len = sizeof(pci_osc_control_bit) / sizeof(pci_osc_control_bit[0]); + int i = 0; + + for (i = 0; i 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_EXPRESS_NATIVE_HP_CONTROL)) { + if (!pcie_ports_native) + host_bridge->native_pcie_hotplug = 0; + else + dev_warn(&bus->dev, "OS overrides %s firmware control", + get_osc_desc(OSC_PCI_EXPRESS_NATIVE_HP_CONTROL)); + } + 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; + + if (!(root->osc_control_set & OSC_PCI_EXPRESS_AER_CONTROL)) { + if (!pcie_ports_native) + host_bridge->native_aer = 0; + else + dev_warn(&bus->dev, "OS overrides %s firmware control", + get_osc_desc(OSC_PCI_EXPRESS_AER_CONTROL)); + } + + if (!(root->osc_control_set & OSC_PCI_EXPRESS_PME_CONTROL)) { + if (!pcie_ports_native) + host_bridge->native_pme = 0; + else + dev_warn(&bus->dev, "OS overrides %s firmware control", + get_osc_desc(OSC_PCI_EXPRESS_PME_CONTROL)); + } + + if (!(root->osc_control_set & OSC_PCI_EXPRESS_LTR_CONTROL)) { + if (!pcie_ports_native) + host_bridge->native_ltr = 0; + else + dev_warn(&bus->dev, "OS overrides %s firmware control", + get_osc_desc(OSC_PCI_EXPRESS_LTR_CONTROL)); + } + + if (!(root->osc_control_set & OSC_PCI_EXPRESS_DPC_CONTROL)) { + if (!pcie_ports_native) + host_bridge->native_dpc = 0; + else + dev_warn(&bus->dev, "OS overrides %s firmware control", + get_osc_desc(OSC_PCI_EXPRESS_DPC_CONTROL)); + } /* * Evaluate the "PCI Boot Configuration" _DSM Function. If it diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c index bf779f291f15..5fc999bf6f1b 100644 --- a/drivers/pci/hotplug/pciehp_core.c +++ b/drivers/pci/hotplug/pciehp_core.c @@ -255,7 +255,7 @@ 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 7224b1e5f2a8..e09589571a9d 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 3acf56683915..d663bd9c7257 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..ccd5e0ce5605 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 (dev->is_hotplug_bridge && host->native_pcie_hotplug) { 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 (dev->aer_cap && pci_aer_available() && host->native_aer) { 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 (pci_pcie_type(dev) == PCI_EXP_TYPE_ROOT_PORT && host->native_pme) { services |= PCIE_PORT_SERVICE_PME; /* From patchwork Fri Jul 17 17:23:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuppuswamy Sathyanarayanan X-Patchwork-Id: 1331359 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=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4B7dJt1jB2z9sTR for ; Sat, 18 Jul 2020 03:24:14 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726846AbgGQRYK (ORCPT ); Fri, 17 Jul 2020 13:24:10 -0400 Received: from mga07.intel.com ([134.134.136.100]:31672 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726104AbgGQRX7 (ORCPT ); Fri, 17 Jul 2020 13:23:59 -0400 IronPort-SDR: 9//Tv7iwicVmXTh/VQC9+pxnsGCcFqTKJf2Zpi0Q0hda21sYBdhvuGJ32IKnOiVHAUg9GxtGWW JD86kkOqkJ3A== X-IronPort-AV: E=McAfee;i="6000,8403,9685"; a="214353105" X-IronPort-AV: E=Sophos;i="5.75,364,1589266800"; d="scan'208";a="214353105" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jul 2020 10:23:58 -0700 IronPort-SDR: Zta6NjPiR076YMUkBK/D7G6b3vQvcr5qgcVenNKNZpj9v3Omg6evaobTPJs5OxsQNkDItvy7Xe +JzpaA7sxHGw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,364,1589266800"; d="scan'208";a="282846757" Received: from jmharral-mobl.amr.corp.intel.com (HELO localhost.localdomain) ([10.254.77.39]) by orsmga003.jf.intel.com with ESMTP; 17 Jul 2020 10:23:58 -0700 From: sathyanarayanan.kuppuswamy@linux.intel.com 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 v7 3/5] ACPI/PCI: Ignore _OSC DPC negotiation result if pcie_ports_dpc_native is set. Date: Fri, 17 Jul 2020 10:23:48 -0700 Message-Id: <8d704e99d53276d00d16f5cb6ba587992e0cf292.1595006564.git.sathyanarayanan.kuppuswamy@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Kuppuswamy Sathyanarayanan pcie_ports_dpc_native is set only if user requests native handling of PCIe DPC capability via pcie_port_setup command line option. User input takes precedence over _OSC based control negotiation result. So consider the _OSC negotiated result for DPC ownership only if pcie_ports_dpc_native is unset. Signed-off-by: Kuppuswamy Sathyanarayanan --- drivers/acpi/pci_root.c | 2 +- drivers/pci/pcie/dpc.c | 3 ++- drivers/pci/pcie/portdrv.h | 2 -- drivers/pci/pcie/portdrv_core.c | 2 +- include/linux/pci.h | 2 ++ 5 files changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index a82069d064fe..a7bc1a864b14 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -962,7 +962,7 @@ struct pci_bus *acpi_pci_root_create(struct acpi_pci_root *root, } if (!(root->osc_control_set & OSC_PCI_EXPRESS_DPC_CONTROL)) { - if (!pcie_ports_native) + if (!pcie_ports_native && !pcie_ports_dpc_native) host_bridge->native_dpc = 0; else dev_warn(&bus->dev, "OS overrides %s firmware control", diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c index daa9a4153776..5b1025a2994d 100644 --- a/drivers/pci/pcie/dpc.c +++ b/drivers/pci/pcie/dpc.c @@ -280,11 +280,12 @@ void pci_dpc_init(struct pci_dev *pdev) static int dpc_probe(struct pcie_device *dev) { struct pci_dev *pdev = dev->port; + struct pci_host_bridge *host = pci_find_host_bridge(pdev->bus); struct device *device = &dev->device; int status; u16 ctl, cap; - if (!pcie_aer_is_native(pdev) && !pcie_ports_dpc_native) + if (!pcie_aer_is_native(pdev) && !host->native_dpc) return -ENOTSUPP; status = devm_request_threaded_irq(device, dev->irq, dpc_irq, diff --git a/drivers/pci/pcie/portdrv.h b/drivers/pci/pcie/portdrv.h index af7cf237432a..0ac20feef24e 100644 --- a/drivers/pci/pcie/portdrv.h +++ b/drivers/pci/pcie/portdrv.h @@ -25,8 +25,6 @@ #define PCIE_PORT_DEVICE_MAXSERVICES 5 -extern bool pcie_ports_dpc_native; - #ifdef CONFIG_PCIEAER int pcie_aer_init(void); int pcie_aer_is_native(struct pci_dev *dev); diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index ccd5e0ce5605..2c0278f0fdcc 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -253,7 +253,7 @@ static int get_port_device_capability(struct pci_dev *dev) */ if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_DPC) && pci_aer_available() && - (pcie_ports_dpc_native || (services & PCIE_PORT_SERVICE_AER))) + (host->native_dpc || (services & PCIE_PORT_SERVICE_AER))) services |= PCIE_PORT_SERVICE_DPC; if (pci_pcie_type(dev) == PCI_EXP_TYPE_DOWNSTREAM || diff --git a/include/linux/pci.h b/include/linux/pci.h index 34c1c4f45288..fe7ce06a4f40 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1556,9 +1556,11 @@ static inline int pci_irqd_intx_xlate(struct irq_domain *d, #ifdef CONFIG_PCIEPORTBUS extern bool pcie_ports_disabled; extern bool pcie_ports_native; +extern bool pcie_ports_dpc_native; #else #define pcie_ports_disabled true #define pcie_ports_native false +#define pcie_ports_dpc_native false #endif #define PCIE_LINK_STATE_L0S BIT(0) From patchwork Fri Jul 17 17:23:49 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuppuswamy Sathyanarayanan X-Patchwork-Id: 1331358 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=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4B7dJh3hKBz9sTR for ; Sat, 18 Jul 2020 03:24:04 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727107AbgGQRYC (ORCPT ); Fri, 17 Jul 2020 13:24:02 -0400 Received: from mga07.intel.com ([134.134.136.100]:31672 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727040AbgGQRYA (ORCPT ); Fri, 17 Jul 2020 13:24:00 -0400 IronPort-SDR: Y+DDyLdZ6LnGYGCCw2aWnnZi7WY9yGOho9XQ0cKRX2TI5r3gBz/TvaIvRzoNnlQOaNijw8PZkl T8Hhs93h+dzg== X-IronPort-AV: E=McAfee;i="6000,8403,9685"; a="214353106" X-IronPort-AV: E=Sophos;i="5.75,364,1589266800"; d="scan'208";a="214353106" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jul 2020 10:23:58 -0700 IronPort-SDR: GmOQsiyzk2Nq/3Gwc6EyDai/+Gzp27KV0/j3XlN3f3BdZniGHENCrvVfpAg265pFTkBc5M9zdZ QKnwqC7BS8QA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,364,1589266800"; d="scan'208";a="282846760" Received: from jmharral-mobl.amr.corp.intel.com (HELO localhost.localdomain) ([10.254.77.39]) by orsmga003.jf.intel.com with ESMTP; 17 Jul 2020 10:23:58 -0700 From: sathyanarayanan.kuppuswamy@linux.intel.com 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 v7 4/5] PCI/portdrv: Remove redundant pci_aer_available() check in DPC enable logic Date: Fri, 17 Jul 2020 10:23:49 -0700 Message-Id: X-Mailer: git-send-email 2.17.1 In-Reply-To: References: Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Kuppuswamy Sathyanarayanan In DPC service enable logic, check for services & PCIE_PORT_SERVICE_AER implies pci_aer_available() is true. So there is no need to explicitly check it again. Also, passing pcie_ports=dpc-native in kernel command line implies DPC needs to be enabled in native mode irrespective of AER ownership status. So checking for pci_aer_available() without checking for pcie_ports status is incorrect. Signed-off-by: Kuppuswamy Sathyanarayanan --- drivers/pci/pcie/portdrv_core.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index 2c0278f0fdcc..e257a2ca3595 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -252,7 +252,6 @@ static int get_port_device_capability(struct pci_dev *dev) * permission to use AER. */ if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_DPC) && - pci_aer_available() && (host->native_dpc || (services & PCIE_PORT_SERVICE_AER))) services |= PCIE_PORT_SERVICE_DPC; From patchwork Fri Jul 17 17:23:50 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuppuswamy Sathyanarayanan X-Patchwork-Id: 1331357 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=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4B7dJg5pKhz9sTC for ; Sat, 18 Jul 2020 03:24:03 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726633AbgGQRYC (ORCPT ); Fri, 17 Jul 2020 13:24:02 -0400 Received: from mga07.intel.com ([134.134.136.100]:31673 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727060AbgGQRYA (ORCPT ); Fri, 17 Jul 2020 13:24:00 -0400 IronPort-SDR: 3mztuxBN6qe+EumwZyZOUfX/k0ENZSCdSkNJwb5WICOwnM1MOafh/n3/UOh3kRQrzf+seanjDC A0qsJXR9RI4Q== X-IronPort-AV: E=McAfee;i="6000,8403,9685"; a="214353108" X-IronPort-AV: E=Sophos;i="5.75,364,1589266800"; d="scan'208";a="214353108" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 17 Jul 2020 10:23:59 -0700 IronPort-SDR: JDcxOhLwc9VGLgSwTLk/gFgi/0vEZRY1OzjtIVixofPqXh7jfJjmdg7fKzYVWWgSvDtrXGh9Wi YaJ1Sb7qFrHQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,364,1589266800"; d="scan'208";a="282846763" Received: from jmharral-mobl.amr.corp.intel.com (HELO localhost.localdomain) ([10.254.77.39]) by orsmga003.jf.intel.com with ESMTP; 17 Jul 2020 10:23:58 -0700 From: sathyanarayanan.kuppuswamy@linux.intel.com 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 v7 5/5] PCI/DPC: Move AER/DPC dependency checks out of DPC driver Date: Fri, 17 Jul 2020 10:23:50 -0700 Message-Id: <8dd823204d0374e0982af0b545815d6e77819ed1.1595006564.git.sathyanarayanan.kuppuswamy@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: References: Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Kuppuswamy Sathyanarayanan Currently, AER and DPC Capabilities dependency checks is distributed between DPC and portdrv service drivers. So move them out of DPC driver. Also, since services & PCIE_PORT_SERVICE_AER check already ensures AER native ownership, no need to add additional pcie_aer_is_native() check. Signed-off-by: Kuppuswamy Sathyanarayanan --- drivers/pci/pcie/dpc.c | 3 --- drivers/pci/pcie/portdrv_core.c | 1 + 2 files changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/pci/pcie/dpc.c b/drivers/pci/pcie/dpc.c index 5b1025a2994d..3efbe43764f3 100644 --- a/drivers/pci/pcie/dpc.c +++ b/drivers/pci/pcie/dpc.c @@ -285,9 +285,6 @@ static int dpc_probe(struct pcie_device *dev) int status; u16 ctl, cap; - if (!pcie_aer_is_native(pdev) && !host->native_dpc) - return -ENOTSUPP; - status = devm_request_threaded_irq(device, dev->irq, dpc_irq, dpc_handler, IRQF_SHARED, "pcie-dpc", pdev); diff --git a/drivers/pci/pcie/portdrv_core.c b/drivers/pci/pcie/portdrv_core.c index e257a2ca3595..ffa1d9fc458e 100644 --- a/drivers/pci/pcie/portdrv_core.c +++ b/drivers/pci/pcie/portdrv_core.c @@ -252,6 +252,7 @@ static int get_port_device_capability(struct pci_dev *dev) * permission to use AER. */ if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_DPC) && + host->native_dpc && (host->native_dpc || (services & PCIE_PORT_SERVICE_AER))) services |= PCIE_PORT_SERVICE_DPC;