diff options
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/acpi/acpi_extlog.c | 18 | ||||
-rw-r--r-- | drivers/acpi/apei/einj.c | 39 | ||||
-rw-r--r-- | drivers/edac/edac_stub.c | 19 | ||||
-rw-r--r-- | drivers/edac/sb_edac.c | 6 |
4 files changed, 74 insertions, 8 deletions
diff --git a/drivers/acpi/acpi_extlog.c b/drivers/acpi/acpi_extlog.c index a6869e110ce5..5d33c5415405 100644 --- a/drivers/acpi/acpi_extlog.c +++ b/drivers/acpi/acpi_extlog.c @@ -12,6 +12,7 @@ #include <acpi/acpi_bus.h> #include <linux/cper.h> #include <linux/ratelimit.h> +#include <linux/edac.h> #include <asm/cpu.h> #include <asm/mce.h> @@ -43,6 +44,8 @@ struct extlog_l1_head { u8 rev1[12]; }; +static int old_edac_report_status; + static u8 extlog_dsm_uuid[] = "663E35AF-CC10-41A4-88EA-5470AF055295"; /* L1 table related physical address */ @@ -150,7 +153,7 @@ static int extlog_print(struct notifier_block *nb, unsigned long val, rc = print_extlog_rcd(NULL, (struct acpi_generic_status *)elog_buf, cpu); - return NOTIFY_DONE; + return NOTIFY_STOP; } static int extlog_get_dsm(acpi_handle handle, int rev, int func, u64 *ret) @@ -231,8 +234,12 @@ static int __init extlog_init(void) u64 cap; int rc; - rc = -ENODEV; + if (get_edac_report_status() == EDAC_REPORTING_FORCE) { + pr_warn("Not loading eMCA, error reporting force-enabled through EDAC.\n"); + return -EPERM; + } + rc = -ENODEV; rdmsrl(MSR_IA32_MCG_CAP, cap); if (!(cap & MCG_ELOG_P)) return rc; @@ -287,6 +294,12 @@ static int __init extlog_init(void) if (elog_buf == NULL) goto err_release_elog; + /* + * eMCA event report method has higher priority than EDAC method, + * unless EDAC event report method is mandatory. + */ + old_edac_report_status = get_edac_report_status(); + set_edac_report_status(EDAC_REPORTING_DISABLED); mce_register_decode_chain(&extlog_mce_dec); /* enable OS to be involved to take over management from BIOS */ ((struct extlog_l1_head *)extlog_l1_addr)->flags |= FLAG_OS_OPTIN; @@ -308,6 +321,7 @@ err: static void __exit extlog_exit(void) { + set_edac_report_status(old_edac_report_status); mce_unregister_decode_chain(&extlog_mce_dec); ((struct extlog_l1_head *)extlog_l1_addr)->flags &= ~FLAG_OS_OPTIN; if (extlog_l1_addr) diff --git a/drivers/acpi/apei/einj.c b/drivers/acpi/apei/einj.c index fb57d03e698b..c76674e2a01f 100644 --- a/drivers/acpi/apei/einj.c +++ b/drivers/acpi/apei/einj.c @@ -416,7 +416,8 @@ out: return rc; } -static int __einj_error_inject(u32 type, u64 param1, u64 param2) +static int __einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2, + u64 param3, u64 param4) { struct apei_exec_context ctx; u64 val, trigger_paddr, timeout = FIRMWARE_TIMEOUT; @@ -446,6 +447,12 @@ static int __einj_error_inject(u32 type, u64 param1, u64 param2) break; } v5param->flags = vendor_flags; + } else if (flags) { + v5param->flags = flags; + v5param->memory_address = param1; + v5param->memory_address_range = param2; + v5param->apicid = param3; + v5param->pcie_sbdf = param4; } else { switch (type) { case ACPI_EINJ_PROCESSOR_CORRECTABLE: @@ -514,11 +521,17 @@ static int __einj_error_inject(u32 type, u64 param1, u64 param2) } /* Inject the specified hardware error */ -static int einj_error_inject(u32 type, u64 param1, u64 param2) +static int einj_error_inject(u32 type, u32 flags, u64 param1, u64 param2, + u64 param3, u64 param4) { int rc; unsigned long pfn; + /* If user manually set "flags", make sure it is legal */ + if (flags && (flags & + ~(SETWA_FLAGS_APICID|SETWA_FLAGS_MEM|SETWA_FLAGS_PCIE_SBDF))) + return -EINVAL; + /* * We need extra sanity checks for memory errors. * Other types leap directly to injection. @@ -532,7 +545,7 @@ static int einj_error_inject(u32 type, u64 param1, u64 param2) if (type & ACPI5_VENDOR_BIT) { if (vendor_flags != SETWA_FLAGS_MEM) goto inject; - } else if (!(type & MEM_ERROR_MASK)) + } else if (!(type & MEM_ERROR_MASK) && !(flags & SETWA_FLAGS_MEM)) goto inject; /* @@ -546,15 +559,18 @@ static int einj_error_inject(u32 type, u64 param1, u64 param2) inject: mutex_lock(&einj_mutex); - rc = __einj_error_inject(type, param1, param2); + rc = __einj_error_inject(type, flags, param1, param2, param3, param4); mutex_unlock(&einj_mutex); return rc; } static u32 error_type; +static u32 error_flags; static u64 error_param1; static u64 error_param2; +static u64 error_param3; +static u64 error_param4; static struct dentry *einj_debug_dir; static int available_error_type_show(struct seq_file *m, void *v) @@ -648,7 +664,8 @@ static int error_inject_set(void *data, u64 val) if (!error_type) return -EINVAL; - return einj_error_inject(error_type, error_param1, error_param2); + return einj_error_inject(error_type, error_flags, error_param1, error_param2, + error_param3, error_param4); } DEFINE_SIMPLE_ATTRIBUTE(error_inject_fops, NULL, @@ -729,6 +746,10 @@ static int __init einj_init(void) rc = -ENOMEM; einj_param = einj_get_parameter_address(); if ((param_extension || acpi5) && einj_param) { + fentry = debugfs_create_x32("flags", S_IRUSR | S_IWUSR, + einj_debug_dir, &error_flags); + if (!fentry) + goto err_unmap; fentry = debugfs_create_x64("param1", S_IRUSR | S_IWUSR, einj_debug_dir, &error_param1); if (!fentry) @@ -737,6 +758,14 @@ static int __init einj_init(void) einj_debug_dir, &error_param2); if (!fentry) goto err_unmap; + fentry = debugfs_create_x64("param3", S_IRUSR | S_IWUSR, + einj_debug_dir, &error_param3); + if (!fentry) + goto err_unmap; + fentry = debugfs_create_x64("param4", S_IRUSR | S_IWUSR, + einj_debug_dir, &error_param4); + if (!fentry) + goto err_unmap; fentry = debugfs_create_x32("notrigger", S_IRUSR | S_IWUSR, einj_debug_dir, ¬rigger); diff --git a/drivers/edac/edac_stub.c b/drivers/edac/edac_stub.c index 351945fa2ecd..9d9e18aefaaa 100644 --- a/drivers/edac/edac_stub.c +++ b/drivers/edac/edac_stub.c @@ -29,6 +29,25 @@ EXPORT_SYMBOL_GPL(edac_err_assert); static atomic_t edac_subsys_valid = ATOMIC_INIT(0); +int edac_report_status = EDAC_REPORTING_ENABLED; +EXPORT_SYMBOL_GPL(edac_report_status); + +static int __init edac_report_setup(char *str) +{ + if (!str) + return -EINVAL; + + if (!strncmp(str, "on", 2)) + set_edac_report_status(EDAC_REPORTING_ENABLED); + else if (!strncmp(str, "off", 3)) + set_edac_report_status(EDAC_REPORTING_DISABLED); + else if (!strncmp(str, "force", 5)) + set_edac_report_status(EDAC_REPORTING_FORCE); + + return 0; +} +__setup("edac_report=", edac_report_setup); + /* * called to determine if there is an EDAC driver interested in * knowing an event (such as NMI) occurred diff --git a/drivers/edac/sb_edac.c b/drivers/edac/sb_edac.c index d7f1b57bd3be..1229123ccb59 100644 --- a/drivers/edac/sb_edac.c +++ b/drivers/edac/sb_edac.c @@ -1829,6 +1829,9 @@ static int sbridge_mce_check_error(struct notifier_block *nb, unsigned long val, struct mem_ctl_info *mci; struct sbridge_pvt *pvt; + if (get_edac_report_status() == EDAC_REPORTING_DISABLED) + return NOTIFY_DONE; + mci = get_mci_for_node_id(mce->socketid); if (!mci) return NOTIFY_BAD; @@ -2142,9 +2145,10 @@ static int __init sbridge_init(void) opstate_init(); pci_rc = pci_register_driver(&sbridge_driver); - if (pci_rc >= 0) { mce_register_decode_chain(&sbridge_mce_dec); + if (get_edac_report_status() == EDAC_REPORTING_DISABLED) + sbridge_printk(KERN_WARNING, "Loading driver, error reporting disabled.\n"); return 0; } |