diff options
| author | Shuai Xue <xueshuai@linux.alibaba.com> | 2022-03-08 22:40:51 +0800 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2022-04-08 11:16:08 +0200 |
| commit | bdae79651453df0bca20963fc2ab970146ef2a37 (patch) | |
| tree | 2484d54c58f7766172df4cc8b08fd7865a9ce627 | |
| parent | b2fa90ef62558ed65f09201b4c8b79ece4468275 (diff) | |
efi/cper: Add a cper_mem_err_status_str() to decode error description
Introduce a new helper function cper_mem_err_status_str() to decode the
error status value into a human readable string.
[ bp: Massage. ]
Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20220308144053.49090-2-xueshuai@linux.alibaba.com
| -rw-r--r-- | drivers/firmware/efi/cper.c | 30 | ||||
| -rw-r--r-- | include/linux/cper.h | 1 |
2 files changed, 30 insertions, 1 deletions
diff --git a/drivers/firmware/efi/cper.c b/drivers/firmware/efi/cper.c index 6ec8edec6329..34eeaa59f04a 100644 --- a/drivers/firmware/efi/cper.c +++ b/drivers/firmware/efi/cper.c @@ -211,6 +211,32 @@ const char *cper_mem_err_type_str(unsigned int etype) } EXPORT_SYMBOL_GPL(cper_mem_err_type_str); +const char *cper_mem_err_status_str(u64 status) +{ + switch ((status >> 8) & 0xff) { + case 1: return "Error detected internal to the component"; + case 4: return "Storage error in DRAM memory"; + case 5: return "Storage error in TLB"; + case 6: return "Storage error in cache"; + case 7: return "Error in one or more functional units"; + case 8: return "Component failed self test"; + case 9: return "Overflow or undervalue of internal queue"; + case 16: return "Error detected in the bus"; + case 17: return "Virtual address not found on IO-TLB or IO-PDIR"; + case 18: return "Improper access error"; + case 19: return "Access to a memory address which is not mapped to any component"; + case 20: return "Loss of Lockstep"; + case 21: return "Response not associated with a request"; + case 22: return "Bus parity error - must also set the A, C, or D Bits"; + case 23: return "Detection of a protocol error"; + case 24: return "Detection of a PATH_ERROR"; + case 25: return "Bus operation timeout"; + case 26: return "A read was issued to data that has been poisoned"; + default: return "Reserved"; + } +} +EXPORT_SYMBOL_GPL(cper_mem_err_status_str); + static int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg) { u32 len, n; @@ -334,7 +360,9 @@ static void cper_print_mem(const char *pfx, const struct cper_sec_mem_err *mem, return; } if (mem->validation_bits & CPER_MEM_VALID_ERROR_STATUS) - printk("%s""error_status: 0x%016llx\n", pfx, mem->error_status); + printk("%s error_status: %s (0x%016llx)\n", + pfx, cper_mem_err_status_str(mem->error_status), + mem->error_status); if (mem->validation_bits & CPER_MEM_VALID_PA) printk("%s""physical_address: 0x%016llx\n", pfx, mem->physical_addr); diff --git a/include/linux/cper.h b/include/linux/cper.h index 6a511a1078ca..5b1dd27b317d 100644 --- a/include/linux/cper.h +++ b/include/linux/cper.h @@ -558,6 +558,7 @@ extern const char *const cper_proc_error_type_strs[4]; u64 cper_next_record_id(void); const char *cper_severity_str(unsigned int); const char *cper_mem_err_type_str(unsigned int); +const char *cper_mem_err_status_str(u64 status); void cper_print_bits(const char *prefix, unsigned int bits, const char * const strs[], unsigned int strs_size); void cper_mem_err_pack(const struct cper_sec_mem_err *, |