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Tue, 12 Mar 2024 21:26:38 +0000 From: Zaid Alali To: zaidal@os.amperecomputing.com, lenb@kernel.org, james.morse@arm.com, tony.luck@intel.com, bp@alien8.de, robert.moore@intel.com, Avadhut.Naik@amd.com, xueshuai@linux.alibaba.com Cc: linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, acpica-devel@lists.linux.dev Subject: [RFC PATCH 1/5] ACPI: APEI: EINJ: Enable the discovery of EINJv2 capabilities Date: Tue, 12 Mar 2024 14:26:22 -0700 Message-Id: <20240312212626.29007-2-zaidal@os.amperecomputing.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240312212626.29007-1-zaidal@os.amperecomputing.com> References: <20240312212626.29007-1-zaidal@os.amperecomputing.com> X-ClientProxiedBy: MW2PR16CA0005.namprd16.prod.outlook.com (2603:10b6:907::18) 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_|SJ2PR01MB8102:EE_ X-MS-Office365-Filtering-Correlation-Id: 3e1ed599-288f-45df-ba07-08dc42db1a13 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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This commit enables the driver to show all supported error injections for EINJ and EINJv2 at the same time. Signed-off-by: Zaid Alali --- drivers/acpi/apei/einj.c | 37 ++++++++++++++++++++++++++++++------- include/acpi/actbl1.h | 1 + 2 files changed, 31 insertions(+), 7 deletions(-) diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c index 89fb9331c611..90efbcbf6b54 100644 --- a/drivers/acpi/apei/einj.c +++ b/drivers/acpi/apei/einj.c @@ -32,6 +32,7 @@ #define SLEEP_UNIT_MAX 5000 /* 5ms */ /* Firmware should respond within 1 seconds */ #define FIRMWARE_TIMEOUT (1 * USEC_PER_SEC) +#define ACPI65_EINJV2_SUPP BIT(30) #define ACPI5_VENDOR_BIT BIT(31) #define MEM_ERROR_MASK (ACPI_EINJ_MEMORY_CORRECTABLE | \ ACPI_EINJ_MEMORY_UNCORRECTABLE | \ @@ -145,13 +146,13 @@ static void einj_exec_ctx_init(struct apei_exec_context *ctx) EINJ_TAB_ENTRY(einj_tab), einj_tab->entries); } -static int __einj_get_available_error_type(u32 *type) +static int __einj_get_available_error_type(u32 *type, int version) { struct apei_exec_context ctx; int rc; einj_exec_ctx_init(&ctx); - rc = apei_exec_run(&ctx, ACPI_EINJ_GET_ERROR_TYPE); + rc = apei_exec_run(&ctx, version); if (rc) return rc; *type = apei_exec_ctx_get_output(&ctx); @@ -160,12 +161,12 @@ static int __einj_get_available_error_type(u32 *type) } /* Get error injection capabilities of the platform */ -static int einj_get_available_error_type(u32 *type) +static int einj_get_available_error_type(u32 *type, int version) { int rc; mutex_lock(&einj_mutex); - rc = __einj_get_available_error_type(type); + rc = __einj_get_available_error_type(type, version); mutex_unlock(&einj_mutex); return rc; @@ -221,9 +222,14 @@ static void check_vendor_extension(u64 paddr, static void *einj_get_parameter_address(void) { - int i; + int i, rc; u64 pa_v4 = 0, pa_v5 = 0; struct acpi_whea_header *entry; + u32 error_type = 0; + + rc = einj_get_available_error_type(&error_type, ACPI_EINJ_GET_ERROR_TYPE); + if (rc) + return NULL; entry = EINJ_TAB_ENTRY(einj_tab); for (i = 0; i < einj_tab->entries; i++) { @@ -615,19 +621,35 @@ static struct { u32 mask; const char *str; } const einj_error_type_string[] = { { BIT(17), "CXL.mem Protocol Uncorrectable fatal" }, { BIT(31), "Vendor Defined Error Types" }, }; +static struct { u32 mask; const char *str; } const einjv2_error_type_string[] = { + { BIT(0), "EINJV2 Processor Error" }, + { BIT(1), "EINJV2 Memory Error" }, + { BIT(2), "EINJV2 PCI Express Error" }, +}; static int available_error_type_show(struct seq_file *m, void *v) { int rc; u32 error_type = 0; - rc = einj_get_available_error_type(&error_type); + rc = einj_get_available_error_type(&error_type, ACPI_EINJ_GET_ERROR_TYPE); if (rc) return rc; for (int pos = 0; pos < ARRAY_SIZE(einj_error_type_string); pos++) if (error_type & einj_error_type_string[pos].mask) seq_printf(m, "0x%08x\t%s\n", einj_error_type_string[pos].mask, einj_error_type_string[pos].str); + if (error_type & ACPI65_EINJV2_SUPP) { + rc = einj_get_available_error_type(&error_type, ACPI_EINJV2_GET_ERROR_TYPE); + if (rc) + return rc; + seq_printf(m, "====================\n"); + for (int pos = 0; pos < ARRAY_SIZE(einjv2_error_type_string); pos++) + if (error_type & einjv2_error_type_string[pos].mask) + seq_printf(m, "0x%08x\t%s\n", einjv2_error_type_string[pos].mask, + einjv2_error_type_string[pos].str); + + } return 0; } @@ -662,7 +684,8 @@ static int error_type_set(void *data, u64 val) if (tval & (tval - 1)) return -EINVAL; if (!vendor) { - rc = einj_get_available_error_type(&available_error_type); + rc = einj_get_available_error_type(&available_error_type, + ACPI_EINJ_GET_ERROR_TYPE); if (rc) return rc; if (!(val & available_error_type)) diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h index a33375e055ad..a07d564b0590 100644 --- a/include/acpi/actbl1.h +++ b/include/acpi/actbl1.h @@ -1030,6 +1030,7 @@ enum acpi_einj_actions { ACPI_EINJ_SET_ERROR_TYPE_WITH_ADDRESS = 8, ACPI_EINJ_GET_EXECUTE_TIMINGS = 9, ACPI_EINJ_ACTION_RESERVED = 10, /* 10 and greater are reserved */ + ACPI_EINJV2_GET_ERROR_TYPE = 0x11, ACPI_EINJ_TRIGGER_ERROR = 0xFF /* Except for this value */ };