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Fri, 25 Aug 2023 18:33:58 -0500 From: Terry Bowman To: , , , , , , , CC: , , , , Mahesh J Salgaonkar , Oliver O'Halloran , Subject: [PATCH v9 08/15] PCI/AER: Refactor cper_print_aer() for use by CXL driver module Date: Fri, 25 Aug 2023 18:32:04 -0500 Message-ID: <20230825233211.3029825-9-terry.bowman@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230825233211.3029825-1-terry.bowman@amd.com> References: <20230825233211.3029825-1-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: SN1PEPF00026368:EE_|CH2PR12MB4857:EE_ X-MS-Office365-Filtering-Correlation-Id: dc0166ce-a6d0-49a0-157a-08dba5c3c1f4 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)(346002)(136003)(396003)(39860400002)(376002)(1800799009)(451199024)(186009)(82310400011)(46966006)(36840700001)(40470700004)(7696005)(6666004)(40460700003)(36756003)(86362001)(356005)(81166007)(82740400003)(40480700001)(36860700001)(47076005)(2616005)(83380400001)(1076003)(2906002)(336012)(426003)(16526019)(26005)(478600001)(110136005)(70586007)(70206006)(8936002)(8676002)(4326008)(44832011)(5660300002)(41300700001)(7416002)(54906003)(316002)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Aug 2023 23:33:59.3636 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: dc0166ce-a6d0-49a0-157a-08dba5c3c1f4 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: SN1PEPF00026368.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH2PR12MB4857 X-Spam-Status: No, score=-1.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FORGED_SPF_HELO, RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_NONE 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 Reviewed-by: Dave Jiang --- 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 8dd9a44e8a7d..f3bb7ea37b44 100644 --- a/drivers/cxl/core/port.c +++ b/drivers/cxl/core/port.c @@ -2062,3 +2062,4 @@ 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,