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Wed, 21 Jun 2023 22:56:32 -0500 From: Terry Bowman To: , , , , , , , CC: , , , , Mahesh J Salgaonkar , Oliver O'Halloran , Subject: [PATCH v6 21/27] PCI/AER: Refactor cper_print_aer() for use by CXL driver module Date: Wed, 21 Jun 2023 22:51:20 -0500 Message-ID: <20230622035126.4130151-22-terry.bowman@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230622035126.4130151-1-terry.bowman@amd.com> References: <20230622035126.4130151-1-terry.bowman@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: BN8NAM11FT084:EE_|MN2PR12MB4207:EE_ X-MS-Office365-Filtering-Correlation-Id: 948bbba9-d21e-4fcf-bbeb-08db72d4aba6 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:(13230028)(4636009)(376002)(39860400002)(346002)(396003)(136003)(451199021)(46966006)(40470700004)(36840700001)(82310400005)(478600001)(70206006)(70586007)(7696005)(36756003)(6666004)(316002)(40460700003)(54906003)(110136005)(426003)(86362001)(83380400001)(186003)(26005)(16526019)(2616005)(81166007)(336012)(82740400003)(36860700001)(41300700001)(8936002)(5660300002)(1076003)(356005)(8676002)(2906002)(4326008)(44832011)(47076005)(40480700001)(7416002)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 22 Jun 2023 03:56:34.1052 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 948bbba9-d21e-4fcf-bbeb-08db72d4aba6 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: BN8NAM11FT084.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4207 X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO, RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The CXL driver plans to use cper_print_aer() for logging restricted CXL host (RCH) AER errors. cper_print_aer() is not currently exported and therefore not usable by the CXL drivers built as loadable modules. Export the cper_print_aer() function. Use the EXPORT_SYMBOL_NS_GPL() variant to restrict the export to CXL drivers. The CONFIG_ACPI_APEI_PCIEAER kernel config is currently used to enable cper_print_aer(). cper_print_aer() logs the AER registers and is useful in PCIE AER logging outside of APEI. Remove the CONFIG_ACPI_APEI_PCIEAER dependency to enable cper_print_aer(). The cper_print_aer() function name implies CPER specific use but is useful in non-CPER cases as well. Rename cper_print_aer() to pci_print_aer(). Also, update cxl_core to import CXL namespace imports. Co-developed-by: Robert Richter Signed-off-by: Robert Richter Signed-off-by: Terry Bowman Cc: Mahesh J Salgaonkar Cc: "Oliver O'Halloran" Cc: Bjorn Helgaas Cc: linux-pci@vger.kernel.org Reviewed-by: Jonathan Cameron Acked-by: Bjorn Helgaas --- drivers/cxl/core/port.c | 1 + drivers/pci/pcie/aer.c | 9 +++++---- include/linux/aer.h | 2 +- 3 files changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/cxl/core/port.c b/drivers/cxl/core/port.c index 37ecd756b224..41e79a36c1ae 100644 --- a/drivers/cxl/core/port.c +++ b/drivers/cxl/core/port.c @@ -2056,3 +2056,4 @@ static void cxl_core_exit(void) subsys_initcall(cxl_core_init); module_exit(cxl_core_exit); MODULE_LICENSE("GPL v2"); +MODULE_IMPORT_NS(CXL); diff --git a/drivers/pci/pcie/aer.c b/drivers/pci/pcie/aer.c index f6c24ded134c..d3344fcf1f79 100644 --- a/drivers/pci/pcie/aer.c +++ b/drivers/pci/pcie/aer.c @@ -771,9 +771,10 @@ int cper_severity_to_aer(int cper_severity) } } EXPORT_SYMBOL_GPL(cper_severity_to_aer); +#endif -void cper_print_aer(struct pci_dev *dev, int aer_severity, - struct aer_capability_regs *aer) +void pci_print_aer(struct pci_dev *dev, int aer_severity, + struct aer_capability_regs *aer) { int layer, agent, tlp_header_valid = 0; u32 status, mask; @@ -812,7 +813,7 @@ void cper_print_aer(struct pci_dev *dev, int aer_severity, trace_aer_event(dev_name(&dev->dev), (status & ~mask), aer_severity, tlp_header_valid, &aer->header_log); } -#endif +EXPORT_SYMBOL_NS_GPL(pci_print_aer, CXL); /** * add_error_device - list device to be handled @@ -1009,7 +1010,7 @@ static void aer_recover_work_func(struct work_struct *work) PCI_SLOT(entry.devfn), PCI_FUNC(entry.devfn)); continue; } - cper_print_aer(pdev, entry.severity, entry.regs); + pci_print_aer(pdev, entry.severity, entry.regs); if (entry.severity == AER_NONFATAL) pcie_do_recovery(pdev, pci_channel_io_normal, aer_root_reset); diff --git a/include/linux/aer.h b/include/linux/aer.h index 97f64ba1b34a..8f124b904314 100644 --- a/include/linux/aer.h +++ b/include/linux/aer.h @@ -64,7 +64,7 @@ static inline void pci_save_aer_state(struct pci_dev *dev) {} static inline void pci_restore_aer_state(struct pci_dev *dev) {} #endif -void cper_print_aer(struct pci_dev *dev, int aer_severity, +void pci_print_aer(struct pci_dev *dev, int aer_severity, struct aer_capability_regs *aer); int cper_severity_to_aer(int cper_severity); void aer_recover_queue(int domain, unsigned int bus, unsigned int devfn,