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Tue, 21 May 2024 21:11:05 +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, Jonathan.Cameron@huawei.com, Benjamin.Cheatham@amd.com, dan.j.williams@intel.com, arnd@arndb.de, Avadhut.Naik@amd.com, u.kleine-koenig@pengutronix.de, john.allen@amd.com, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, acpica-devel@lists.linux.dev Subject: [RFC PATCH v2 6/8] ACPI: APEI: EINJ: Add debugfs files for EINJv2 support Date: Tue, 21 May 2024 14:10:34 -0700 Message-Id: <20240521211036.227674-7-zaidal@os.amperecomputing.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240521211036.227674-1-zaidal@os.amperecomputing.com> References: <20240521211036.227674-1-zaidal@os.amperecomputing.com> X-ClientProxiedBy: MW4PR04CA0187.namprd04.prod.outlook.com (2603:10b6:303:86::12) 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_|MW6PR01MB8627:EE_ X-MS-Office365-Filtering-Correlation-Id: ec2c3762-cdc8-45e0-d6c8-08dc79da85a5 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 --- drivers/acpi/apei/einj-core.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/acpi/apei/einj-core.c b/drivers/acpi/apei/einj-core.c index 2021bea02996..2e30ebed079b 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 +108,9 @@ 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 u64 component_count; +static void *user_input; static u32 available_error_type; static u32 available_error_type_v2; @@ -859,6 +863,19 @@ 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) { + debugfs_create_x64("einjv2_component_count", S_IRUSR | S_IWUSR, + einj_debug_dir, &component_count); + user_input = kzalloc(COMP_ARR_SIZE, GFP_KERNEL); + if (!user_input) { + rc = -ENOMEM; + goto err_release; + } + 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]) { @@ -908,6 +925,7 @@ static void __exit einj_remove(struct platform_device *pdev) apei_resources_fini(&einj_resources); debugfs_remove_recursive(einj_debug_dir); acpi_put_table((struct acpi_table_header *)einj_tab); + kfree(user_input); } static struct platform_device *einj_dev;