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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. ]

Shuai Xue committed 4 years ago

Commit bdae7961 parent b2fa90e2 files · +30 −1Browse files

Unified · Split

2 files
  1. drivers/firmware/efi/cper.c +29 −1
  2. include/linux/cper.h +1 −0
drivers/firmware/efi/cper.c+29−1
@@ -211,6 +211,32 @@ const char *cper_mem_err_type_str(unsigned int etype) · 210 unmodified lines
211}211}
212EXPORT_SYMBOL_GPL(cper_mem_err_type_str);212EXPORT_SYMBOL_GPL(cper_mem_err_type_str);
213 213
214const char *cper_mem_err_status_str(u64 status)
215{
216 switch ((status >> 8) & 0xff) {
217 case 1: return "Error detected internal to the component";
218 case 4: return "Storage error in DRAM memory";
219 case 5: return "Storage error in TLB";
220 case 6: return "Storage error in cache";
221 case 7: return "Error in one or more functional units";
222 case 8: return "Component failed self test";
223 case 9: return "Overflow or undervalue of internal queue";
224 case 16: return "Error detected in the bus";
225 case 17: return "Virtual address not found on IO-TLB or IO-PDIR";
226 case 18: return "Improper access error";
227 case 19: return "Access to a memory address which is not mapped to any component";
228 case 20: return "Loss of Lockstep";
229 case 21: return "Response not associated with a request";
230 case 22: return "Bus parity error - must also set the A, C, or D Bits";
231 case 23: return "Detection of a protocol error";
232 case 24: return "Detection of a PATH_ERROR";
233 case 25: return "Bus operation timeout";
234 case 26: return "A read was issued to data that has been poisoned";
235 default: return "Reserved";
236 }
237}
238EXPORT_SYMBOL_GPL(cper_mem_err_status_str);
239
214static int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg)240static int cper_mem_err_location(struct cper_mem_err_compact *mem, char *msg)
215{241{
216 u32 len, n;242 u32 len, n;
@@ -334,7 +360,9 @@ static void cper_print_mem(const char *pfx, const struct cper_sec_mem_err *mem, · 117 unmodified lines
334 return;360 return;
335 }361 }
336 if (mem->validation_bits & CPER_MEM_VALID_ERROR_STATUS)362 if (mem->validation_bits & CPER_MEM_VALID_ERROR_STATUS)
337 printk("%s""error_status: 0x%016llx\n", pfx, mem->error_status);363 printk("%s error_status: %s (0x%016llx)\n",
364 pfx, cper_mem_err_status_str(mem->error_status),
365 mem->error_status);
338 if (mem->validation_bits & CPER_MEM_VALID_PA)366 if (mem->validation_bits & CPER_MEM_VALID_PA)
339 printk("%s""physical_address: 0x%016llx\n",367 printk("%s""physical_address: 0x%016llx\n",
340 pfx, mem->physical_addr);368 pfx, mem->physical_addr);
include/linux/cper.h+1−0
@@ -558,6 +558,7 @@ extern const char *const cper_proc_error_type_strs[4]; · 557 unmodified lines
558u64 cper_next_record_id(void);558u64 cper_next_record_id(void);
559const char *cper_severity_str(unsigned int);559const char *cper_severity_str(unsigned int);
560const char *cper_mem_err_type_str(unsigned int);560const char *cper_mem_err_type_str(unsigned int);
561const char *cper_mem_err_status_str(u64 status);
561void cper_print_bits(const char *prefix, unsigned int bits,562void cper_print_bits(const char *prefix, unsigned int bits,
562 const char * const strs[], unsigned int strs_size);563 const char * const strs[], unsigned int strs_size);
563void cper_mem_err_pack(const struct cper_sec_mem_err *,564void cper_mem_err_pack(const struct cper_sec_mem_err *,