diff options
| -rw-r--r-- | Documentation/acpi/apei/output_format.txt | 25 | ||||
| -rw-r--r-- | arch/x86/kernel/cpu/mcheck/mce-apei.c | 42 | ||||
| -rw-r--r-- | drivers/acpi/apei/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/acpi/apei/cper.c | 18 | ||||
| -rw-r--r-- | drivers/acpi/apei/erst-dbg.c | 24 | ||||
| -rw-r--r-- | drivers/acpi/apei/erst.c | 235 | ||||
| -rw-r--r-- | drivers/pci/pcie/aer/aerdrv.h | 9 | ||||
| -rw-r--r-- | drivers/pci/pcie/aer/aerdrv_errprint.c | 182 | ||||
| -rw-r--r-- | include/acpi/apei.h | 5 | ||||
| -rw-r--r-- | include/linux/aer.h | 24 | ||||
| -rw-r--r-- | include/linux/cper.h | 2 |
11 files changed, 421 insertions, 152 deletions
diff --git a/Documentation/acpi/apei/output_format.txt b/Documentation/acpi/apei/output_format.txt index 9146952c612a..0c49c197c47a 100644 --- a/Documentation/acpi/apei/output_format.txt +++ b/Documentation/acpi/apei/output_format.txt @@ -92,6 +92,11 @@ vendor_id: <integer>, device_id: <integer> class_code: <integer>] [serial number: <integer>, <integer>] [bridge: secondary_status: <integer>, control: <integer>] +[aer_status: <integer>, aer_mask: <integer> +<aer status string> +[aer_uncor_severity: <integer>] +aer_layer=<aer layer string>, aer_agent=<aer agent string> +aer_tlp_header: <integer> <integer> <integer> <integer>] <pcie port type string>* := PCIe end point | legacy PCI end point | \ unknown | unknown | root port | upstream switch port | \ @@ -99,6 +104,26 @@ downstream switch port | PCIe to PCI/PCI-X bridge | \ PCI/PCI-X to PCIe bridge | root complex integrated endpoint device | \ root complex event collector +if section severity is fatal or recoverable +<aer status string># := +unknown | unknown | unknown | unknown | Data Link Protocol | \ +unknown | unknown | unknown | unknown | unknown | unknown | unknown | \ +Poisoned TLP | Flow Control Protocol | Completion Timeout | \ +Completer Abort | Unexpected Completion | Receiver Overflow | \ +Malformed TLP | ECRC | Unsupported Request +else +<aer status string># := +Receiver Error | unknown | unknown | unknown | unknown | unknown | \ +Bad TLP | Bad DLLP | RELAY_NUM Rollover | unknown | unknown | unknown | \ +Replay Timer Timeout | Advisory Non-Fatal +fi + +<aer layer string> := +Physical Layer | Data Link Layer | Transaction Layer + +<aer agent string> := +Receiver ID | Requester ID | Completer ID | Transmitter ID + Where, [] designate corresponding content is optional All <field string> description with * has the following format: diff --git a/arch/x86/kernel/cpu/mcheck/mce-apei.c b/arch/x86/kernel/cpu/mcheck/mce-apei.c index 8209472b27a5..83930deec3c6 100644 --- a/arch/x86/kernel/cpu/mcheck/mce-apei.c +++ b/arch/x86/kernel/cpu/mcheck/mce-apei.c @@ -106,24 +106,34 @@ int apei_write_mce(struct mce *m) ssize_t apei_read_mce(struct mce *m, u64 *record_id) { struct cper_mce_record rcd; - ssize_t len; - - len = erst_read_next(&rcd.hdr, sizeof(rcd)); - if (len <= 0) - return len; - /* Can not skip other records in storage via ERST unless clear them */ - else if (len != sizeof(rcd) || - uuid_le_cmp(rcd.hdr.creator_id, CPER_CREATOR_MCE)) { - if (printk_ratelimit()) - pr_warning( - "MCE-APEI: Can not skip the unknown record in ERST"); - return -EIO; - } - + int rc, pos; + + rc = erst_get_record_id_begin(&pos); + if (rc) + return rc; +retry: + rc = erst_get_record_id_next(&pos, record_id); + if (rc) + goto out; + /* no more record */ + if (*record_id == APEI_ERST_INVALID_RECORD_ID) + goto out; + rc = erst_read(*record_id, &rcd.hdr, sizeof(rcd)); + /* someone else has cleared the record, try next one */ + if (rc == -ENOENT) + goto retry; + else if (rc < 0) + goto out; + /* try to skip other type records in storage */ + else if (rc != sizeof(rcd) || + uuid_le_cmp(rcd.hdr.creator_id, CPER_CREATOR_MCE)) + goto retry; memcpy(m, &rcd.mce, sizeof(*m)); - *record_id = rcd.hdr.record_id; + rc = sizeof(*m); +out: + erst_get_record_id_end(); - return sizeof(*m); + return rc; } /* Check whether there is record in ERST */ diff --git a/drivers/acpi/apei/Kconfig b/drivers/acpi/apei/Kconfig index fca34ccfd294..9ecf6feae830 100644 --- a/drivers/acpi/apei/Kconfig +++ b/drivers/acpi/apei/Kconfig @@ -21,6 +21,13 @@ config ACPI_APEI_GHES by firmware to produce more valuable hardware error information for Linux. +config ACPI_APEI_PCIEAER + bool "APEI PCIe AER logging/recovering support" + depends on ACPI_APEI && PCIEAER + help + PCIe AER errors may be reported via APEI firmware first mode. + Turn on this option to enable the corresponding support. + config ACPI_APEI_EINJ tristate "APEI Error INJection (EINJ)" depends on ACPI_APEI && DEBUG_FS diff --git a/drivers/acpi/apei/cper.c b/drivers/acpi/apei/cper.c index 31464a006d76..5d4189464d63 100644 --- a/drivers/acpi/apei/cper.c +++ b/drivers/acpi/apei/cper.c @@ -29,6 +29,7 @@ #include <linux/time.h> #include <linux/cper.h> #include <linux/acpi.h> +#include <linux/aer.h> /* * CPER record ID need to be unique even after reboot, because record @@ -70,8 +71,8 @@ static const char *cper_severity_str(unsigned int severity) * If the output length is longer than 80, multiple line will be * printed, with @pfx is printed at the beginning of each line. */ -static void cper_print_bits(const char *pfx, unsigned int bits, - const char *strs[], unsigned int strs_size) +void cper_print_bits(const char *pfx, unsigned int bits, + const char *strs[], unsigned int strs_size) { int i, len = 0; const char *str; @@ -81,6 +82,8 @@ static void cper_print_bits(const char *pfx, unsigned int bits, if (!(bits & (1U << i))) continue; str = strs[i]; + if (!str) + continue; if (len && len + strlen(str) + 2 > 80) { printk("%s\n", buf); len = 0; @@ -243,7 +246,8 @@ static const char *cper_pcie_port_type_strs[] = { "root complex event collector", }; -static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie) +static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie, + const struct acpi_hest_generic_data *gdata) { if (pcie->validation_bits & CPER_PCIE_VALID_PORT_TYPE) printk("%s""port_type: %d, %s\n", pfx, pcie->port_type, @@ -276,6 +280,12 @@ static void cper_print_pcie(const char *pfx, const struct cper_sec_pcie *pcie) printk( "%s""bridge: secondary_status: 0x%04x, control: 0x%04x\n", pfx, pcie->bridge.secondary_status, pcie->bridge.control); +#ifdef CONFIG_ACPI_APEI_PCIEAER + if (pcie->validation_bits & CPER_PCIE_VALID_AER_INFO) { + struct aer_capability_regs *aer_regs = (void *)pcie->aer_info; + cper_print_aer(pfx, gdata->error_severity, aer_regs); + } +#endif } static const char *apei_estatus_section_flag_strs[] = { @@ -322,7 +332,7 @@ static void apei_estatus_print_section( struct cper_sec_pcie *pcie = (void *)(gdata + 1); printk("%s""section_type: PCIe error\n", pfx); if (gdata->error_data_length >= sizeof(*pcie)) - cper_print_pcie(pfx, pcie); + cper_print_pcie(pfx, pcie, gdata); else goto err_section_too_small; } else diff --git a/drivers/acpi/apei/erst-dbg.c b/drivers/acpi/apei/erst-dbg.c index de73caf3cebc..a4cfb64c86a1 100644 --- a/drivers/acpi/apei/erst-dbg.c +++ b/drivers/acpi/apei/erst-dbg.c @@ -43,12 +43,27 @@ static DEFINE_MUTEX(erst_dbg_mutex); static int erst_dbg_open(struct inode *inode, struct file *file) { + int rc, *pos; + if (erst_disable) return -ENODEV; + pos = (int *)&file->private_data; + + rc = erst_get_record_id_begin(pos); + if (rc) + return rc; + return nonseekable_open(inode, file); } +static int erst_dbg_release(struct inode *inode, struct file *file) +{ + erst_get_record_id_end(); + + return 0; +} + static long erst_dbg_ioctl(struct file *f, unsigned int cmd, unsigned long arg) { int rc; @@ -79,18 +94,20 @@ static long erst_dbg_ioctl(struct file *f, unsigned int cmd, unsigned long arg) static ssize_t erst_dbg_read(struct file *filp, char __user *ubuf, size_t usize, loff_t *off) { - int rc; + int rc, *pos; ssize_t len = 0; u64 id; - if (*off != 0) + if (*off) return -EINVAL; if (mutex_lock_interruptible(&erst_dbg_mutex) != 0) return -EINTR; + pos = (int *)&filp->private_data; + retry_next: - rc = erst_get_next_record_id(&id); + rc = erst_get_record_id_next(pos, &id); if (rc) goto out; /* no more record */ @@ -181,6 +198,7 @@ out: static const struct file_operations erst_dbg_ops = { .owner = THIS_MODULE, .open = erst_dbg_open, + .release = erst_dbg_release, .read = erst_dbg_read, .write = erst_dbg_write, .unlocked_ioctl = erst_dbg_ioctl, diff --git a/drivers/acpi/apei/erst.c b/drivers/acpi/apei/erst.c index cf6db6b7662a..8ff8c32fef58 100644 --- a/drivers/acpi/apei/erst.c +++ b/drivers/acpi/apei/erst.c @@ -429,6 +429,22 @@ ssize_t erst_get_record_count(void) } EXPORT_SYMBOL_GPL(erst_get_record_count); +#define ERST_RECORD_ID_CACHE_SIZE_MIN 16 +#define ERST_RECORD_ID_CACHE_SIZE_MAX 1024 + +struct erst_record_id_cache { + struct mutex lock; + u64 *entries; + int len; + int size; + int refcount; +}; + +static struct erst_record_id_cache erst_record_id_cache = { + .lock = __MUTEX_INITIALIZER(erst_record_id_cache.lock), + .refcount = 0, +}; + static int __erst_get_next_record_id(u64 *record_id) { struct apei_exec_context ctx; @@ -443,26 +459,179 @@ static int __erst_get_next_record_id(u64 *record_id) return 0; } +int erst_get_record_id_begin(int *pos) +{ + int rc; + + if (erst_disable) + return -ENODEV; + + rc = mutex_lock_interruptible(&erst_record_id_cache.lock); + if (rc) + return rc; + erst_record_id_cache.refcount++; + mutex_unlock(&erst_record_id_cache.lock); + + *pos = 0; + + return 0; +} +EXPORT_SYMBOL_GPL(erst_get_record_id_begin); + +/* erst_record_id_cache.lock must be held by caller */ +static int __erst_record_id_cache_add_one(void) +{ + u64 id, prev_id, first_id; + int i, rc; + u64 *entries; + unsigned long flags; + + id = prev_id = first_id = APEI_ERST_INVALID_RECORD_ID; +retry: + raw_spin_lock_irqsave(&erst_lock, flags); + rc = __erst_get_next_record_id(&id); + raw_spin_unlock_irqrestore(&erst_lock, flags); + if (rc == -ENOENT) + return 0; + if (rc) + return rc; + if (id == APEI_ERST_INVALID_RECORD_ID) + return 0; + /* can not skip current ID, or loop back to first ID */ + if (id == prev_id || id == first_id) + return 0; + if (first_id == APEI_ERST_INVALID_RECORD_ID) + first_id = id; + prev_id = id; + + entries = erst_record_id_cache.entries; + for (i = 0; i < erst_record_id_cache.len; i++) { + if (entries[i] == id) + break; + } + /* record id already in cache, try next */ + if (i < erst_record_id_cache.len) + goto retry; + if (erst_record_id_cache.len >= erst_record_id_cache.size) { + int new_size, alloc_size; + u64 *new_entries; + + new_size = erst_record_id_cache.size * 2; + new_size = clamp_val(new_size, ERST_RECORD_ID_CACHE_SIZE_MIN, + ERST_RECORD_ID_CACHE_SIZE_MAX); + if (new_size <= erst_record_id_cache.size) { + if (printk_ratelimit()) + pr_warning(FW_WARN ERST_PFX + "too many record ID!\n"); + return 0; + } + alloc_size = new_size * sizeof(entries[0]); + if (alloc_size < PAGE_SIZE) + new_entries = kmalloc(alloc_size, GFP_KERNEL); + else + new_entries = vmalloc(alloc_size); + if (!new_entries) + return -ENOMEM; + memcpy(new_entries, entries, + erst_record_id_cache.len * sizeof(entries[0])); + if (erst_record_id_cache.size < PAGE_SIZE) + kfree(entries); + else + vfree(entries); + erst_record_id_cache.entries = entries = new_entries; + erst_record_id_cache.size = new_size; + } + entries[i] = id; + erst_record_id_cache.len++; + + return 1; +} + /* * Get the record ID of an existing error record on the persistent * storage. If there is no error record on the persistent storage, the * returned record_id is APEI_ERST_INVALID_RECORD_ID. */ -int erst_get_next_record_id(u64 *record_id) +int erst_get_record_id_next(int *pos, u64 *record_id) { - int rc; - unsigned long flags; + int rc = 0; + u64 *entries; if (erst_disable) return -ENODEV; - raw_spin_lock_irqsave(&erst_lock, flags); - rc = __erst_get_next_record_id(record_id); - raw_spin_unlock_irqrestore(&erst_lock, flags); + /* must be enclosed by erst_get_record_id_begin/end */ + BUG_ON(!erst_record_id_cache.refcount); + BUG_ON(*pos < 0 || *pos > erst_record_id_cache.len); + + mutex_lock(&erst_record_id_cache.lock); + entries = erst_record_id_cache.entries; + for (; *pos < erst_record_id_cache.len; (*pos)++) + if (entries[*pos] != APEI_ERST_INVALID_RECORD_ID) + break; + /* found next record id in cache */ + if (*pos < erst_record_id_cache.len) { + *record_id = entries[*pos]; + (*pos)++; + goto out_unlock; + } + + /* Try to add one more record ID to cache */ + rc = __erst_record_id_cache_add_one(); + if (rc < 0) + goto out_unlock; + /* successfully add one new ID */ + if (rc == 1) { + *record_id = erst_record_id_cache.entries[*pos]; + (*pos)++; + rc = 0; + } else { + *pos = -1; + *record_id = APEI_ERST_INVALID_RECORD_ID; + } +out_unlock: + mutex_unlock(&erst_record_id_cache.lock); return rc; } -EXPORT_SYMBOL_GPL(erst_get_next_record_id); +EXPORT_SYMBOL_GPL(erst_get_record_id_next); + +/* erst_record_id_cache.lock must be held by caller */ +static void __erst_record_id_cache_compact(void) +{ + int i, wpos = 0; + u64 *entries; + + if (erst_record_id_cache.refcount) + return; + + entries = erst_record_id_cache.entries; + for (i = 0; i < erst_record_id_cache.len; i++) { + if (entries[i] == APEI_ERST_INVALID_RECORD_ID) + continue; + if (wpos != i) + memcpy(&entries[wpos], &entries[i], sizeof(entries[i])); + wpos++; + } + erst_record_id_cache.len = wpos; +} + +void erst_get_record_id_end(void) +{ + /* + * erst_disable != 0 should be detected by invoker via the + * return value of erst_get_record_id_begin/next, so this + * function should not be called for erst_disable != 0. + */ + BUG_ON(erst_disable); + + mutex_lock(&erst_record_id_cache.lock); + erst_record_id_cache.refcount--; + BUG_ON(erst_record_id_cache.refcount < 0); + __erst_record_id_cache_compact(); + mutex_unlock(&erst_record_id_cache.lock); +} +EXPORT_SYMBOL_GPL(erst_get_record_id_end); static int __erst_write_to_storage(u64 offset) { @@ -703,56 +872,34 @@ ssize_t erst_read(u64 record_id, struct cper_record_header *record, } EXPORT_SYMBOL_GPL(erst_read); -/* - * If return value > buflen, the buffer size is not big enough, - * else if return value = 0, there is no more record to read, - * else if return value < 0, something goes wrong, - * else everything is OK, and return value is record length - */ -ssize_t erst_read_next(struct cper_record_header *record, size_t buflen) -{ - int rc; - ssize_t len; - unsigned long flags; - u64 record_id; - - if (erst_disable) - return -ENODEV; - - raw_spin_lock_irqsave(&erst_lock, flags); - rc = __erst_get_next_record_id(&record_id); - if (rc) { - raw_spin_unlock_irqrestore(&erst_lock, flags); - return rc; - } - /* no more record */ - if (record_id == APEI_ERST_INVALID_RECORD_ID) { - raw_spin_unlock_irqrestore(&erst_lock, flags); - return 0; - } - - len = __erst_read(record_id, record, buflen); - raw_spin_unlock_irqrestore(&erst_lock, flags); - - return len; -} -EXPORT_SYMBOL_GPL(erst_read_next); - int erst_clear(u64 record_id) { - int rc; + int rc, i; unsigned long flags; + u64 *entries; if (erst_disable) return -ENODEV; + rc = mutex_lock_interruptible(&erst_record_id_cache.lock); + if (rc) + return rc; raw_spin_lock_irqsave(&erst_lock, flags); if (erst_erange.attr & ERST_RANGE_NVRAM) rc = __erst_clear_from_nvram(record_id); else rc = __erst_clear_from_storage(record_id); raw_spin_unlock_irqrestore(&erst_lock, flags); - + if (rc) + goto out; + entries = erst_record_id_cache.entries; + for (i = 0; i < erst_record_id_cache.len; i++) { + if (entries[i] == record_id) + entries[i] = APEI_ERST_INVALID_RECORD_ID; + } + __erst_record_id_cache_compact(); +out: + mutex_unlock(&erst_record_id_cache.lock); return rc; } EXPORT_SYMBOL_GPL(erst_clear); diff --git a/drivers/pci/pcie/aer/aerdrv.h b/drivers/pci/pcie/aer/aerdrv.h index 80c11d131499..3eb77080366a 100644 --- a/drivers/pci/pcie/aer/aerdrv.h +++ b/drivers/pci/pcie/aer/aerdrv.h @@ -35,13 +35,6 @@ PCI_ERR_UNC_UNX_COMP| \ PCI_ERR_UNC_MALF_TLP) -struct header_log_regs { - unsigned int dw0; - unsigned int dw1; - unsigned int dw2; - unsigned int dw3; -}; - #define AER_MAX_MULTI_ERR_DEVICES 5 /* Not likely to have more */ struct aer_err_info { struct pci_dev *dev[AER_MAX_MULTI_ERR_DEVICES]; @@ -59,7 +52,7 @@ struct aer_err_info { unsigned int status; /* COR/UNCOR Error Status */ unsigned int mask; /* COR/UNCOR Error Mask */ - struct header_log_regs tlp; /* TLP Header */ + struct aer_header_log_regs tlp; /* TLP Header */ }; struct aer_err_source { diff --git a/drivers/pci/pcie/aer/aerdrv_errprint.c b/drivers/pci/pcie/aer/aerdrv_errprint.c index 9d3e4c8d0184..b07a42e0b350 100644 --- a/drivers/pci/pcie/aer/aerdrv_errprint.c +++ b/drivers/pci/pcie/aer/aerdrv_errprint.c @@ -19,6 +19,7 @@ #include <linux/errno.h> #include <linux/pm.h> #include <linux/suspend.h> +#include <linux/cper.h> #include "aerdrv.h" @@ -57,86 +58,44 @@ (e & AER_DATA_LINK_LAYER_ERROR_MASK(t)) ? AER_DATA_LINK_LAYER_ERROR : \ AER_TRANSACTION_LAYER_ERROR) -#define AER_PR(info, pdev, fmt, args...) \ - printk("%s%s %s: " fmt, (info->severity == AER_CORRECTABLE) ? \ - KERN_WARNING : KERN_ERR, dev_driver_string(&pdev->dev), \ - dev_name(&pdev->dev), ## args) - /* * AER error strings */ -static char *aer_error_severity_string[] = { +static const char *aer_error_severity_string[] = { "Uncorrected (Non-Fatal)", "Uncorrected (Fatal)", "Corrected" }; -static char *aer_error_layer[] = { +static const char *aer_error_layer[] = { "Physical Layer", "Data Link Layer", "Transaction Layer" }; -static char *aer_correctable_error_string[] = { - "Receiver Error ", /* Bit Position 0 */ - NULL, - NULL, - NULL, - NULL, - NULL, - "Bad TLP ", /* Bit Position 6 */ - "Bad DLLP ", /* Bit Position 7 */ - "RELAY_NUM Rollover ", /* Bit Position 8 */ - NULL, - NULL, - NULL, - "Replay Timer Timeout ", /* Bit Position 12 */ - "Advisory Non-Fatal ", /* Bit Position 13 */ - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, + +static const char *aer_correctable_error_string[] = { + "Receiver Error", /* Bit Position 0 */ NULL, NULL, NULL, NULL, NULL, + "Bad TLP", /* Bit Position 6 */ + "Bad DLLP", /* Bit Position 7 */ + "RELAY_NUM Rollover", /* Bit Position 8 */ NULL, NULL, NULL, + "Replay Timer Timeout", /* Bit Position 12 */ + "Advisory Non-Fatal", /* Bit Position 13 */ }; -static char *aer_uncorrectable_error_string[] = { - NULL, - NULL, - NULL, - NULL, - "Data Link Protocol ", /* Bit Position 4 */ - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - NULL, - "Poisoned TLP ", /* Bit Position 12 */ - "Flow Control Protocol ", /* Bit Position 13 */ - "Completion Timeout ", /* Bit Position 14 */ - "Completer Abort ", /* Bit Position 15 */ - "Unexpected Completion ", /* Bit Position 16 */ - "Receiver Overflow ", /* Bit Position 17 */ - "Malformed TLP ", /* Bit Position 18 */ - "ECRC ", /* Bit Position 19 */ - "Unsupported Request ", /* Bit Position 20 */ +static const char *aer_uncorrectable_error_string[] = { NULL, NULL, NULL, NULL, + "Data Link Protocol", /* Bit Position 4 */ NULL, NULL, NULL, @@ -144,19 +103,29 @@ static char *aer_uncorrectable_error_string[] = { NULL, NULL, NULL, + "Poisoned TLP", /* Bit Position 12 */ + "Flow Control Protocol", /* Bit Position 13 */ + "Completion Timeout", /* Bit Position 14 */ + "Completer Abort", /* Bit Position 15 */ + "Unexpected Completion", /* Bit Position 16 */ + "Receiver Overflow", /* Bit Position 17 */ + "Malformed TLP", /* Bit Position 18 */ + "ECRC", /* Bit Position 19 */ + "Unsupported Request", /* Bit Position 20 */ }; -static char *aer_agent_string[] = { +static const char *aer_agent_string[] = { "Receiver ID", "Requester ID", "Completer ID", "Transmitter ID" }; -static void __aer_print_error(struct aer_err_info *info, struct pci_dev *dev) +static void __aer_print_error(const char *prefix, + struct aer_err_info *info) { int i, status; - char *errmsg = NULL; + const char *errmsg = NULL; status = (info->status & ~info->mask); @@ -165,15 +134,17 @@ static void __aer_print_error(struct aer_err_info *info, struct pci_dev *dev) continue; if (info->severity == AER_CORRECTABLE) - errmsg = aer_correctable_error_string[i]; + errmsg = i < ARRAY_SIZE(aer_correctable_error_string) ? + aer_correctable_error_string[i] : NULL; else - errmsg = aer_uncorrectable_error_string[i]; + errmsg = i < ARRAY_SIZE(aer_uncorrectable_error_string) ? + aer_uncorrectable_error_string[i] : NULL; if (errmsg) - AER_PR(info, dev, " [%2d] %s%s\n", i, errmsg, + printk("%s"" [%2d] %-22s%s\n", prefix, i, errmsg, info->first_error == i ? " (First)" : ""); else - AER_PR(info, dev, " [%2d] Unknown Error Bit%s\n", i, + printk("%s"" [%2d] Unknown Error Bit%s\n", prefix, i, info->first_error == i ? " (First)" : ""); } } @@ -181,11 +152,15 @@ static void __aer_print_error(struct aer_err_info *info, struct pci_dev *dev) void aer_print_error(struct pci_dev *dev, struct aer_err_info *info) { int id = ((dev->bus->number << 8) | dev->devfn); + char prefix[44]; + + snprintf(prefix, sizeof(prefix), "%s%s %s: ", + (info->severity == AER_CORRECTABLE) ? KERN_WARNING : KERN_ERR, + dev_driver_string(&dev->dev), dev_name(&dev->dev)); if (info->status == 0) { - AER_PR(info, dev, - "PCIe Bus Error: severity=%s, type=Unaccessible, " - "id=%04x(Unregistered Agent ID)\n", + printk("%s""PCIe Bus Error: severity=%s, type=Unaccessible, " + "id=%04x(Unregistered Agent ID)\n", prefix, aer_error_severity_string[info->severity], id); } else { int layer, agent; @@ -193,23 +168,22 @@ void aer_print_error(struct pci_dev *dev, struct aer_err_info *info) layer = AER_GET_LAYER_ERROR(info->severity, info->status); agent = AER_GET_AGENT(info->severity, info->status); - AER_PR(info, dev, - "PCIe Bus Error: severity=%s, type=%s, id=%04x(%s)\n", - aer_error_severity_string[info->severity], + printk("%s""PCIe Bus Error: severity=%s, type=%s, id=%04x(%s)\n", + prefix, aer_error_severity_string[info->severity], aer_error_layer[layer], id, aer_agent_string[agent]); - AER_PR(info, dev, - " device [%04x:%04x] error status/mask=%08x/%08x\n", - dev->vendor, dev->device, info->status, info->mask); + printk("%s"" device [%04x:%04x] error status/mask=%08x/%08x\n", + prefix, dev->vendor, dev->device, + info->status, info->mask); - __aer_print_error(info, dev); + __aer_print_error(prefix, info); if (info->tlp_header_valid) { unsigned char *tlp = (unsigned char *) &info->tlp; - AER_PR(info, dev, " TLP Header:" + printk("%s"" TLP Header:" " %02x%02x%02x%02x %02x%02x%02x%02x" " %02x%02x%02x%02x %02x%02x%02x%02x\n", - *(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp, + prefix, *(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp, *(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4), *(tlp + 11), *(tlp + 10), *(tlp + 9), *(tlp + 8), *(tlp + 15), *(tlp + 14), @@ -218,8 +192,8 @@ void aer_print_error(struct pci_dev *dev, struct aer_err_info *info) } if (info->id && info->error_dev_num > 1 && info->id == id) - AER_PR(info, dev, - " Error of this Agent(%04x) is reported first\n", id); + printk("%s"" Error of this Agent(%04x) is reported first\n", + prefix, id); } void aer_print_port_info(struct pci_dev *dev, struct aer_err_info *info) @@ -228,3 +202,61 @@ void aer_print_port_info(struct pci_dev *dev, struct aer_err_info *info) info->multi_error_valid ? "Multiple " : "", aer_error_severity_string[info->severity], info->id); } + +#ifdef CONFIG_ACPI_APEI_PCIEAER +static int cper_severity_to_aer(int cper_severity) +{ + switch (cper_severity) { + case CPER_SEV_RECOVERABLE: + return AER_NONFATAL; + case CPER_SEV_FATAL: + return AER_FATAL; + default: + return AER_CORRECTABLE; + } +} + +void cper_print_aer(const char *prefix, int cper_severity, + struct aer_capability_regs *aer) +{ + int aer_severity, layer, agent, status_strs_size, tlp_header_valid = 0; + u32 status, mask; + const char **status_strs; + + aer_severity = cper_severity_to_aer(cper_severity); + if (aer_severity == AER_CORRECTABLE) { + status = aer->cor_status; + mask = aer->cor_mask; + status_strs = aer_correctable_error_string; + status_strs_size = ARRAY_SIZE(aer_correctable_error_string); + } else { + status = aer->uncor_status; + mask = aer->uncor_mask; + status_strs = aer_uncorrectable_error_string; + status_strs_size = ARRAY_SIZE(aer_uncorrectable_error_string); + tlp_header_valid = status & AER_LOG_TLP_MASKS; + } + layer = AER_GET_LAYER_ERROR(aer_severity, status); + agent = AER_GET_AGENT(aer_severity, status); + printk("%s""aer_status: 0x%08x, aer_mask: 0x%08x\n", + prefix, status, mask); + cper_print_bits(prefix, status, status_strs, status_strs_size); + printk("%s""aer_layer=%s, aer_agent=%s\n", prefix, + aer_error_layer[layer], aer_agent_string[agent]); + if (aer_severity != AER_CORRECTABLE) + printk("%s""aer_uncor_severity: 0x%08x\n", + prefix, aer->uncor_severity); + if (tlp_header_valid) { + const unsigned char *tlp; + tlp = (const unsigned char *)&aer->header_log; + printk("%s""aer_tlp_header:" + " %02x%02x%02x%02x %02x%02x%02x%02x" + " %02x%02x%02x%02x %02x%02x%02x%02x\n", + prefix, *(tlp + 3), *(tlp + 2), *(tlp + 1), *tlp, + *(tlp + 7), *(tlp + 6), *(tlp + 5), *(tlp + 4), + *(tlp + 11), *(tlp + 10), *(tlp + 9), + *(tlp + 8), *(tlp + 15), *(tlp + 14), + *(tlp + 13), *(tlp + 12)); + } +} +#endif diff --git a/include/acpi/apei.h b/include/acpi/apei.h index c4dbb132d902..e67b523a50e1 100644 --- a/include/acpi/apei.h +++ b/include/acpi/apei.h @@ -30,10 +30,11 @@ int apei_hest_parse(apei_hest_func_t func, void *data); int erst_write(const struct cper_record_header *record); ssize_t erst_get_record_count(void); -int erst_get_next_record_id(u64 *record_id); +int erst_get_record_id_begin(int *pos); +int erst_get_record_id_next(int *pos, u64 *record_id); +void erst_get_record_id_end(void); ssize_t erst_read(u64 record_id, struct cper_record_header *record, size_t buflen); -ssize_t erst_read_next(struct cper_record_header *record, size_t buflen); int erst_clear(u64 record_id); #endif diff --git a/include/linux/aer.h b/include/linux/aer.h index f7df1eefc107..8414de22a779 100644 --- a/include/linux/aer.h +++ b/include/linux/aer.h @@ -7,6 +7,28 @@ #ifndef _AER_H_ #define _AER_H_ +struct aer_header_log_regs { + unsigned int dw0; + unsigned int dw1; + unsigned int dw2; + unsigned int dw3; +}; + +struct aer_capability_regs { + u32 header; + u32 uncor_status; + u32 uncor_mask; + u32 uncor_severity; + u32 cor_status; + u32 cor_mask; + u32 cap_control; + struct aer_header_log_regs header_log; + u32 root_command; + u32 root_status; + u16 cor_err_source; + u16 uncor_err_source; +}; + #if defined(CONFIG_PCIEAER) /* pci-e port driver needs this function to enable aer */ extern int pci_enable_pcie_error_reporting(struct pci_dev *dev); @@ -27,5 +49,7 @@ static inline int pci_cleanup_aer_uncorrect_error_status(struct pci_dev *dev) } #endif +extern void cper_print_aer(const char *prefix, int cper_severity, + struct aer_capability_regs *aer); #endif //_AER_H_ diff --git a/include/linux/cper.h b/include/linux/cper.h index 3104aaff5dd0..372a25839fd1 100644 --- a/include/linux/cper.h +++ b/include/linux/cper.h @@ -388,5 +388,7 @@ struct cper_sec_pcie { #pragma pack() u64 cper_next_record_id(void); +void cper_print_bits(const char *prefix, unsigned int bits, + const char *strs[], unsigned int strs_size); #endif |