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Wysocki" , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , =?utf-8?q?P?= =?utf-8?q?ali_Roh=C3=A1r?= , =?utf-8?q?Marek_Beh=C3=BAn?= , "Maciej W . Rozycki" , Manivannan Sadhasivam , Mario Limonciello , "open list:DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS" , "open list:DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS" , "open list" , "open list:RADEON and AMDGPU DRM DRIVERS" , "open list:PCI SUBSYSTEM" , "open list:ACPI" Subject: [PATCH v3 4/7] PCI: pciehp: Move check for is_thunderbolt into a quirk Date: Tue, 14 Nov 2023 14:07:52 -0600 Message-ID: <20231114200755.14911-5-mario.limonciello@amd.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20231114200755.14911-1-mario.limonciello@amd.com> References: <20231114200755.14911-1-mario.limonciello@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A103:EE_|DS0PR12MB6392:EE_ X-MS-Office365-Filtering-Correlation-Id: 9abb656f-3e41-40b1-15e6-08dbe54d7b25 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230031)(4636009)(376002)(136003)(39860400002)(396003)(346002)(230922051799003)(451199024)(186009)(1800799009)(82310400011)(64100799003)(36840700001)(46966006)(40470700004)(40460700003)(36860700001)(41300700001)(54906003)(70586007)(70206006)(86362001)(110136005)(36756003)(356005)(81166007)(82740400003)(478600001)(16526019)(26005)(1076003)(336012)(6666004)(2906002)(426003)(7696005)(7416002)(2616005)(5660300002)(83380400001)(40480700001)(44832011)(316002)(47076005)(4326008)(8936002)(8676002)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Nov 2023 20:08:34.2765 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9abb656f-3e41-40b1-15e6-08dbe54d7b25 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A103.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB6392 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org commit 493fb50e958c ("PCI: pciehp: Assume NoCompl+ for Thunderbolt ports") added a check into pciehp code to explicitly set NoCompl+ for all Intel Thunderbolt controllers, including those that don't need it. This overloaded the purpose of the `is_thunderbolt` member of `struct pci_device` because that means that any controller that identifies as thunderbolt would set NoCompl+ even if it doesn't suffer this deficiency. As that commit helpfully specifies all the controllers with the problem, move them into a PCI quirk. Signed-off-by: Mario Limonciello Reviewed-by: Ilpo Järvinen --- v2->v3: * Reword commit message * Update comments --- drivers/pci/hotplug/pciehp_hpc.c | 6 +----- drivers/pci/quirks.c | 20 ++++++++++++++++++++ include/linux/pci.h | 1 + 3 files changed, 22 insertions(+), 5 deletions(-) diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c index b1d0a1b3917d..40f7a26fb98f 100644 --- a/drivers/pci/hotplug/pciehp_hpc.c +++ b/drivers/pci/hotplug/pciehp_hpc.c @@ -992,11 +992,7 @@ struct controller *pcie_init(struct pcie_device *dev) if (pdev->hotplug_user_indicators) slot_cap &= ~(PCI_EXP_SLTCAP_AIP | PCI_EXP_SLTCAP_PIP); - /* - * We assume no Thunderbolt controllers support Command Complete events, - * but some controllers falsely claim they do. - */ - if (pdev->is_thunderbolt) + if (pdev->no_command_complete) slot_cap |= PCI_EXP_SLTCAP_NCCS; ctrl->slot_cap = slot_cap; diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index ea476252280a..fa9b82cd7b3b 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3809,6 +3809,26 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PORT_RIDGE, quirk_thunderbolt_hotplug_msi); +/* + * Certain Thunderbolt 1 controllers falsely claim to support Command + * Completed events. + */ +static void quirk_thunderbolt_command_complete(struct pci_dev *pdev) +{ + pdev->no_command_complete = 1; +} +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_RIDGE, + quirk_thunderbolt_command_complete); +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EAGLE_RIDGE, + quirk_thunderbolt_command_complete); +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_LIGHT_PEAK, + quirk_thunderbolt_command_complete); +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_4C, + quirk_thunderbolt_command_complete); +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CACTUS_RIDGE_2C, + quirk_thunderbolt_command_complete); +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_PORT_RIDGE, + quirk_thunderbolt_command_complete); #ifdef CONFIG_ACPI /* * Apple: Shutdown Cactus Ridge Thunderbolt controller. diff --git a/include/linux/pci.h b/include/linux/pci.h index 1fbca2bd92e8..20a6e4fc3060 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -441,6 +441,7 @@ struct pci_dev { unsigned int is_hotplug_bridge:1; unsigned int shpc_managed:1; /* SHPC owned by shpchp */ unsigned int is_thunderbolt:1; /* Thunderbolt controller */ + unsigned int no_command_complete:1; /* No command completion */ /* * Devices marked being untrusted are the ones that can potentially * execute DMA attacks and similar. They are typically connected