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Thu, 3 Apr 2025 23:14:02 +0000 From: Zaid Alali To: rafael@kernel.org, lenb@kernel.org, james.morse@arm.com, tony.luck@intel.com, bp@alien8.de, robert.moore@intel.com, dan.j.williams@intel.com, zaidal@os.amperecomputing.com, Jonathan.Cameron@huawei.com, Benjamin.Cheatham@amd.com, Avadhut.Naik@amd.com, viro@zeniv.linux.org.uk, arnd@arndb.de, ira.weiny@intel.com, dave.jiang@intel.com, sthanneeru.opensrc@micron.com, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, acpica-devel@lists.linux.dev Subject: [PATCH v5 7/9] ACPI: APEI: EINJ: Add debugfs files for EINJv2 support Date: Thu, 3 Apr 2025 16:13:37 -0700 Message-ID: <20250403231339.23708-8-zaidal@os.amperecomputing.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250403231339.23708-1-zaidal@os.amperecomputing.com> References: <20250403231339.23708-1-zaidal@os.amperecomputing.com> X-ClientProxiedBy: MW4PR03CA0246.namprd03.prod.outlook.com (2603:10b6:303:b4::11) To SN7PR01MB7903.prod.exchangelabs.com (2603:10b6:806:34f::17) Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SN7PR01MB7903:EE_|BN0PR01MB6925:EE_ X-MS-Office365-Filtering-Correlation-Id: c0d4ff25-a240-4fc7-0b3c-08dd73053904 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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EINJv2 enables users to inject errors to multiple components/devices at the same time using component array. Signed-off-by: Zaid Alali Reviewed-by: Jonathan Cameron --- drivers/acpi/apei/einj-core.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/acpi/apei/einj-core.c b/drivers/acpi/apei/einj-core.c index d1ddc82744c7..dd7626da360c 100644 --- a/drivers/acpi/apei/einj-core.c +++ b/drivers/acpi/apei/einj-core.c @@ -33,6 +33,7 @@ #define SLEEP_UNIT_MAX 5000 /* 5ms */ /* Firmware should respond within 1 seconds */ #define FIRMWARE_TIMEOUT (1 * USEC_PER_SEC) +#define COMP_ARR_SIZE 1024 #define ACPI65_EINJV2_SUPP BIT(30) #define ACPI5_VENDOR_BIT BIT(31) #define MEM_ERROR_MASK (ACPI_EINJ_MEMORY_CORRECTABLE | \ @@ -107,6 +108,8 @@ static struct debugfs_blob_wrapper vendor_blob; static struct debugfs_blob_wrapper vendor_errors; static char vendor_dev[64]; +static struct debugfs_blob_wrapper einjv2_component_arr; +static void *user_input; static u32 available_error_type; static u32 available_error_type_v2; @@ -890,6 +893,17 @@ static int __init einj_probe(struct platform_device *pdev) &error_param4); debugfs_create_x32("notrigger", S_IRUSR | S_IWUSR, einj_debug_dir, ¬rigger); + if (available_error_type & ACPI65_EINJV2_SUPP) { + user_input = kzalloc(COMP_ARR_SIZE, GFP_KERNEL); + if (!user_input) { + rc = -ENOMEM; + goto err_alloc; + } + einjv2_component_arr.data = user_input; + einjv2_component_arr.size = COMP_ARR_SIZE; + debugfs_create_blob("einjv2_component_array", S_IRUSR | S_IWUSR, + einj_debug_dir, &einjv2_component_arr); + } } if (vendor_dev[0]) { @@ -909,6 +923,8 @@ static int __init einj_probe(struct platform_device *pdev) return 0; +err_alloc: + apei_exec_post_unmap_gars(&ctx); err_release: apei_resources_release(&einj_resources); err_fini: @@ -933,6 +949,7 @@ static void __exit einj_remove(struct platform_device *pdev) if (vendor_errors.size) acpi_os_unmap_memory(vendor_errors.data, vendor_errors.size); } + kfree(user_input); einj_exec_ctx_init(&ctx); apei_exec_post_unmap_gars(&ctx); apei_resources_release(&einj_resources);