1 // SPDX-License-Identifier: GPL-2.0-only
2 #include <linux/module.h>
3 #include <linux/slab.h>
9 static struct amd_decoder_ops fam_ops;
11 static u8 xec_mask = 0xf;
13 static void (*decode_dram_ecc)(int node_id, struct mce *m);
15 void amd_register_ecc_decoder(void (*f)(int, struct mce *))
19 EXPORT_SYMBOL_GPL(amd_register_ecc_decoder);
21 void amd_unregister_ecc_decoder(void (*f)(int, struct mce *))
23 if (decode_dram_ecc) {
24 WARN_ON(decode_dram_ecc != f);
26 decode_dram_ecc = NULL;
29 EXPORT_SYMBOL_GPL(amd_unregister_ecc_decoder);
32 * string representation for the different MCA reported error types, see F3x48
36 /* transaction type */
37 static const char * const tt_msgs[] = { "INSN", "DATA", "GEN", "RESV" };
40 static const char * const ll_msgs[] = { "RESV", "L1", "L2", "L3/GEN" };
42 /* memory transaction type */
43 static const char * const rrrr_msgs[] = {
44 "GEN", "RD", "WR", "DRD", "DWR", "IRD", "PRF", "EV", "SNP"
47 /* participating processor */
48 const char * const pp_msgs[] = { "SRC", "RES", "OBS", "GEN" };
49 EXPORT_SYMBOL_GPL(pp_msgs);
52 static const char * const to_msgs[] = { "no timeout", "timed out" };
55 static const char * const ii_msgs[] = { "MEM", "RESV", "IO", "GEN" };
57 /* internal error type */
58 static const char * const uu_msgs[] = { "RESV", "RESV", "HWA", "RESV" };
60 static const char * const f15h_mc1_mce_desc[] = {
61 "UC during a demand linefill from L2",
62 "Parity error during data load from IC",
63 "Parity error for IC valid bit",
64 "Main tag parity error",
65 "Parity error in prediction queue",
66 "PFB data/address parity error",
67 "Parity error in the branch status reg",
68 "PFB promotion address error",
69 "Tag error during probe/victimization",
70 "Parity error for IC probe tag valid bit",
71 "PFB non-cacheable bit parity error",
72 "PFB valid bit parity error", /* xec = 0xd */
73 "Microcode Patch Buffer", /* xec = 010 */
81 static const char * const f15h_mc2_mce_desc[] = {
82 "Fill ECC error on data fills", /* xec = 0x4 */
83 "Fill parity error on insn fills",
84 "Prefetcher request FIFO parity error",
85 "PRQ address parity error",
86 "PRQ data parity error",
89 "WCB Data parity error",
90 "VB Data ECC or parity error",
91 "L2 Tag ECC error", /* xec = 0x10 */
92 "Hard L2 Tag ECC error",
93 "Multiple hits on L2 tag",
95 "PRB address parity error"
98 static const char * const mc4_mce_desc[] = {
99 "DRAM ECC error detected on the NB",
100 "CRC error detected on HT link",
101 "Link-defined sync error packets detected on HT link",
104 "Invalid GART PTE entry during GART table walk",
105 "Unsupported atomic RMW received from an IO link",
106 "Watchdog timeout due to lack of progress",
107 "DRAM ECC error detected on the NB",
108 "SVM DMA Exclusion Vector error",
109 "HT data error detected on link",
110 "Protocol error (link, L3, probe filter)",
111 "NB internal arrays parity error",
112 "DRAM addr/ctl signals parity error",
113 "IO link transmission error",
114 "L3 data cache ECC error", /* xec = 0x1c */
115 "L3 cache tag error",
116 "L3 LRU parity bits error",
117 "ECC Error in the Probe Filter directory"
120 static const char * const mc5_mce_desc[] = {
121 "CPU Watchdog timer expire",
122 "Wakeup array dest tag",
126 "Retire dispatch queue",
127 "Mapper checkpoint array",
128 "Physical register file EX0 port",
129 "Physical register file EX1 port",
130 "Physical register file AG0 port",
131 "Physical register file AG1 port",
132 "Flag register file",
134 "Retire status queue"
137 static const char * const mc6_mce_desc[] = {
138 "Hardware Assertion",
140 "Physical Register File",
143 "Status Register File",
146 /* Scalable MCA error strings */
147 static const char * const smca_ls_mce_desc[] = {
148 "Load queue parity error",
149 "Store queue parity error",
150 "Miss address buffer payload parity error",
151 "Level 1 TLB parity error",
152 "DC Tag error type 5",
153 "DC Tag error type 6",
154 "DC Tag error type 1",
155 "Internal error type 1",
156 "Internal error type 2",
157 "System Read Data Error Thread 0",
158 "System Read Data Error Thread 1",
159 "DC Tag error type 2",
160 "DC Data error type 1 and poison consumption",
161 "DC Data error type 2",
162 "DC Data error type 3",
163 "DC Tag error type 4",
164 "Level 2 TLB parity error",
166 "DC Tag error type 3",
167 "DC Tag error type 5",
168 "L2 Fill Data error",
171 static const char * const smca_ls2_mce_desc[] = {
172 "An ECC error was detected on a data cache read by a probe or victimization",
173 "An ECC error or L2 poison was detected on a data cache read by a load",
174 "An ECC error was detected on a data cache read-modify-write by a store",
175 "An ECC error or poison bit mismatch was detected on a tag read by a probe or victimization",
176 "An ECC error or poison bit mismatch was detected on a tag read by a load",
177 "An ECC error or poison bit mismatch was detected on a tag read by a store",
178 "An ECC error was detected on an EMEM read by a load",
179 "An ECC error was detected on an EMEM read-modify-write by a store",
180 "A parity error was detected in an L1 TLB entry by any access",
181 "A parity error was detected in an L2 TLB entry by any access",
182 "A parity error was detected in a PWC entry by any access",
183 "A parity error was detected in an STQ entry by any access",
184 "A parity error was detected in an LDQ entry by any access",
185 "A parity error was detected in a MAB entry by any access",
186 "A parity error was detected in an SCB entry state field by any access",
187 "A parity error was detected in an SCB entry address field by any access",
188 "A parity error was detected in an SCB entry data field by any access",
189 "A parity error was detected in a WCB entry by any access",
190 "A poisoned line was detected in an SCB entry by any access",
191 "A SystemReadDataError error was reported on read data returned from L2 for a load",
192 "A SystemReadDataError error was reported on read data returned from L2 for an SCB store",
193 "A SystemReadDataError error was reported on read data returned from L2 for a WCB store",
194 "A hardware assertion error was reported",
195 "A parity error was detected in an STLF, SCB EMEM entry or SRB store data by any access",
198 static const char * const smca_if_mce_desc[] = {
199 "Op Cache Microtag Probe Port Parity Error",
200 "IC Microtag or Full Tag Multi-hit Error",
201 "IC Full Tag Parity Error",
202 "IC Data Array Parity Error",
203 "Decoupling Queue PhysAddr Parity Error",
204 "L0 ITLB Parity Error",
205 "L1 ITLB Parity Error",
206 "L2 ITLB Parity Error",
207 "BPQ Thread 0 Snoop Parity Error",
208 "BPQ Thread 1 Snoop Parity Error",
209 "L1 BTB Multi-Match Error",
210 "L2 BTB Multi-Match Error",
211 "L2 Cache Response Poison Error",
212 "System Read Data Error",
213 "Hardware Assertion Error",
220 static const char * const smca_l2_mce_desc[] = {
221 "L2M Tag Multiple-Way-Hit error",
222 "L2M Tag or State Array ECC Error",
223 "L2M Data Array ECC Error",
224 "Hardware Assert Error",
227 static const char * const smca_de_mce_desc[] = {
228 "Micro-op cache tag parity error",
229 "Micro-op cache data parity error",
230 "Instruction buffer parity error",
231 "Micro-op queue parity error",
232 "Instruction dispatch queue parity error",
233 "Fetch address FIFO parity error",
234 "Patch RAM data parity error",
235 "Patch RAM sequencer parity error",
236 "Micro-op buffer parity error",
237 "Hardware Assertion MCA Error",
240 static const char * const smca_ex_mce_desc[] = {
241 "Watchdog Timeout error",
242 "Physical register file parity error",
243 "Flag register file parity error",
244 "Immediate displacement register file parity error",
245 "Address generator payload parity error",
246 "EX payload parity error",
247 "Checkpoint queue parity error",
248 "Retire dispatch queue parity error",
249 "Retire status queue parity error",
250 "Scheduling queue parity error",
251 "Branch buffer queue parity error",
252 "Hardware Assertion error",
253 "Spec Map parity error",
254 "Retire Map parity error",
257 static const char * const smca_fp_mce_desc[] = {
258 "Physical register file (PRF) parity error",
259 "Freelist (FL) parity error",
260 "Schedule queue parity error",
262 "Retire queue (RQ) parity error",
263 "Status register file (SRF) parity error",
264 "Hardware assertion",
267 static const char * const smca_l3_mce_desc[] = {
268 "Shadow Tag Macro ECC Error",
269 "Shadow Tag Macro Multi-way-hit Error",
271 "L3M Tag Multi-way-hit Error",
272 "L3M Data ECC Error",
273 "SDP Parity Error or SystemReadDataError from XI",
274 "L3 Victim Queue Parity Error",
275 "L3 Hardware Assertion",
278 static const char * const smca_cs_mce_desc[] = {
281 "Security Violation",
283 "Unexpected Response",
284 "Request or Probe Parity Error",
285 "Read Response Parity Error",
286 "Atomic Request Parity Error",
287 "Probe Filter ECC Error",
290 static const char * const smca_cs2_mce_desc[] = {
293 "Security Violation",
295 "Unexpected Response",
296 "Request or Probe Parity Error",
297 "Read Response Parity Error",
298 "Atomic Request Parity Error",
299 "SDP read response had no match in the CS queue",
300 "Probe Filter Protocol Error",
301 "Probe Filter ECC Error",
302 "SDP read response had an unexpected RETRY error",
303 "Counter overflow error",
304 "Counter underflow error",
307 static const char * const smca_pie_mce_desc[] = {
309 "Register security violation",
311 "Poison data consumption",
312 "A deferred error was detected in the DF"
315 static const char * const smca_umc_mce_desc[] = {
319 "Advanced peripheral bus error",
320 "Address/Command parity error",
321 "Write data CRC error",
322 "DCQ SRAM ECC error",
323 "AES SRAM ECC error",
326 static const char * const smca_umc2_mce_desc[] = {
331 "Address/Command parity error",
332 "Write data parity error",
333 "DCQ SRAM ECC error",
335 "Read data parity error",
336 "Rdb SRAM ECC error",
337 "RdRsp SRAM ECC error",
341 static const char * const smca_pb_mce_desc[] = {
342 "An ECC error in the Parameter Block RAM array",
345 static const char * const smca_psp_mce_desc[] = {
346 "An ECC or parity error in a PSP RAM instance",
349 static const char * const smca_psp2_mce_desc[] = {
350 "High SRAM ECC or parity error",
351 "Low SRAM ECC or parity error",
352 "Instruction Cache Bank 0 ECC or parity error",
353 "Instruction Cache Bank 1 ECC or parity error",
354 "Instruction Tag Ram 0 parity error",
355 "Instruction Tag Ram 1 parity error",
356 "Data Cache Bank 0 ECC or parity error",
357 "Data Cache Bank 1 ECC or parity error",
358 "Data Cache Bank 2 ECC or parity error",
359 "Data Cache Bank 3 ECC or parity error",
360 "Data Tag Bank 0 parity error",
361 "Data Tag Bank 1 parity error",
362 "Data Tag Bank 2 parity error",
363 "Data Tag Bank 3 parity error",
364 "Dirty Data Ram parity error",
365 "TLB Bank 0 parity error",
366 "TLB Bank 1 parity error",
367 "System Hub Read Buffer ECC or parity error",
370 static const char * const smca_smu_mce_desc[] = {
371 "An ECC or parity error in an SMU RAM instance",
374 static const char * const smca_smu2_mce_desc[] = {
375 "High SRAM ECC or parity error",
376 "Low SRAM ECC or parity error",
377 "Data Cache Bank A ECC or parity error",
378 "Data Cache Bank B ECC or parity error",
379 "Data Tag Cache Bank A ECC or parity error",
380 "Data Tag Cache Bank B ECC or parity error",
381 "Instruction Cache Bank A ECC or parity error",
382 "Instruction Cache Bank B ECC or parity error",
383 "Instruction Tag Cache Bank A ECC or parity error",
384 "Instruction Tag Cache Bank B ECC or parity error",
385 "System Hub Read Buffer ECC or parity error",
389 static const char * const smca_mp5_mce_desc[] = {
390 "High SRAM ECC or parity error",
391 "Low SRAM ECC or parity error",
392 "Data Cache Bank A ECC or parity error",
393 "Data Cache Bank B ECC or parity error",
394 "Data Tag Cache Bank A ECC or parity error",
395 "Data Tag Cache Bank B ECC or parity error",
396 "Instruction Cache Bank A ECC or parity error",
397 "Instruction Cache Bank B ECC or parity error",
398 "Instruction Tag Cache Bank A ECC or parity error",
399 "Instruction Tag Cache Bank B ECC or parity error",
402 static const char * const smca_nbio_mce_desc[] = {
403 "ECC or Parity error",
405 "SDP ErrEvent error",
406 "SDP Egress Poison Error",
407 "IOHC Internal Poison Error",
410 static const char * const smca_pcie_mce_desc[] = {
411 "CCIX PER Message logging",
412 "CCIX Read Response with Status: Non-Data Error",
413 "CCIX Write Response with Status: Non-Data Error",
414 "CCIX Read Response with Status: Data Error",
415 "CCIX Non-okay write response with data error",
418 static const char * const smca_pcie2_mce_desc[] = {
419 "SDP Parity Error logging",
422 static const char * const smca_xgmipcs_mce_desc[] = {
425 "Flow Control Acknowledge Error",
426 "Rx Fifo Underflow Error",
427 "Rx Fifo Overflow Error",
429 "BER Exceeded Error",
430 "Tx Vcid Data Error",
431 "Replay Buffer Parity Error",
433 "Replay Fifo Overflow Error",
434 "Replay Fifo Underflow Error",
435 "Elastic Fifo Overflow Error",
437 "Flow Control CRC Error",
438 "Data Startup Limit Error",
439 "FC Init Timeout Error",
440 "Recovery Timeout Error",
441 "Ready Serial Timeout Error",
442 "Ready Serial Attempt Error",
443 "Recovery Attempt Error",
444 "Recovery Relock Attempt Error",
445 "Replay Attempt Error",
447 "Tx Replay Timeout Error",
448 "Rx Replay Timeout Error",
449 "LinkSub Tx Timeout Error",
450 "LinkSub Rx Timeout Error",
451 "Rx CMD Pocket Error",
454 static const char * const smca_xgmiphy_mce_desc[] = {
456 "ARC instruction buffer parity error",
457 "ARC data buffer parity error",
461 static const char * const smca_waflphy_mce_desc[] = {
463 "ARC instruction buffer parity error",
464 "ARC data buffer parity error",
468 struct smca_mce_desc {
469 const char * const *descs;
470 unsigned int num_descs;
473 static struct smca_mce_desc smca_mce_descs[] = {
474 [SMCA_LS] = { smca_ls_mce_desc, ARRAY_SIZE(smca_ls_mce_desc) },
475 [SMCA_LS_V2] = { smca_ls2_mce_desc, ARRAY_SIZE(smca_ls2_mce_desc) },
476 [SMCA_IF] = { smca_if_mce_desc, ARRAY_SIZE(smca_if_mce_desc) },
477 [SMCA_L2_CACHE] = { smca_l2_mce_desc, ARRAY_SIZE(smca_l2_mce_desc) },
478 [SMCA_DE] = { smca_de_mce_desc, ARRAY_SIZE(smca_de_mce_desc) },
479 [SMCA_EX] = { smca_ex_mce_desc, ARRAY_SIZE(smca_ex_mce_desc) },
480 [SMCA_FP] = { smca_fp_mce_desc, ARRAY_SIZE(smca_fp_mce_desc) },
481 [SMCA_L3_CACHE] = { smca_l3_mce_desc, ARRAY_SIZE(smca_l3_mce_desc) },
482 [SMCA_CS] = { smca_cs_mce_desc, ARRAY_SIZE(smca_cs_mce_desc) },
483 [SMCA_CS_V2] = { smca_cs2_mce_desc, ARRAY_SIZE(smca_cs2_mce_desc) },
484 [SMCA_PIE] = { smca_pie_mce_desc, ARRAY_SIZE(smca_pie_mce_desc) },
485 [SMCA_UMC] = { smca_umc_mce_desc, ARRAY_SIZE(smca_umc_mce_desc) },
486 [SMCA_UMC_V2] = { smca_umc2_mce_desc, ARRAY_SIZE(smca_umc2_mce_desc) },
487 [SMCA_PB] = { smca_pb_mce_desc, ARRAY_SIZE(smca_pb_mce_desc) },
488 [SMCA_PSP] = { smca_psp_mce_desc, ARRAY_SIZE(smca_psp_mce_desc) },
489 [SMCA_PSP_V2] = { smca_psp2_mce_desc, ARRAY_SIZE(smca_psp2_mce_desc) },
490 [SMCA_SMU] = { smca_smu_mce_desc, ARRAY_SIZE(smca_smu_mce_desc) },
491 [SMCA_SMU_V2] = { smca_smu2_mce_desc, ARRAY_SIZE(smca_smu2_mce_desc) },
492 [SMCA_MP5] = { smca_mp5_mce_desc, ARRAY_SIZE(smca_mp5_mce_desc) },
493 [SMCA_NBIO] = { smca_nbio_mce_desc, ARRAY_SIZE(smca_nbio_mce_desc) },
494 [SMCA_PCIE] = { smca_pcie_mce_desc, ARRAY_SIZE(smca_pcie_mce_desc) },
495 [SMCA_PCIE_V2] = { smca_pcie2_mce_desc, ARRAY_SIZE(smca_pcie2_mce_desc) },
496 [SMCA_XGMI_PCS] = { smca_xgmipcs_mce_desc, ARRAY_SIZE(smca_xgmipcs_mce_desc) },
497 [SMCA_XGMI_PHY] = { smca_xgmiphy_mce_desc, ARRAY_SIZE(smca_xgmiphy_mce_desc) },
498 [SMCA_WAFL_PHY] = { smca_waflphy_mce_desc, ARRAY_SIZE(smca_waflphy_mce_desc) },
501 static bool f12h_mc0_mce(u16 ec, u8 xec)
510 pr_cont("during L1 linefill from L2.\n");
511 else if (ll == LL_L1)
512 pr_cont("Data/Tag %s error.\n", R4_MSG(ec));
519 static bool f10h_mc0_mce(u16 ec, u8 xec)
521 if (R4(ec) == R4_GEN && LL(ec) == LL_L1) {
522 pr_cont("during data scrub.\n");
525 return f12h_mc0_mce(ec, xec);
528 static bool k8_mc0_mce(u16 ec, u8 xec)
531 pr_cont("during system linefill.\n");
535 return f10h_mc0_mce(ec, xec);
538 static bool cat_mc0_mce(u16 ec, u8 xec)
545 if (TT(ec) != TT_DATA || LL(ec) != LL_L1)
551 pr_cont("Data/Tag parity error due to %s.\n",
552 (r4 == R4_DRD ? "load/hw prf" : "store"));
555 pr_cont("Copyback parity error on a tag miss.\n");
558 pr_cont("Tag parity error during snoop.\n");
563 } else if (BUS_ERROR(ec)) {
565 if ((II(ec) != II_MEM && II(ec) != II_IO) || LL(ec) != LL_LG)
568 pr_cont("System read data error on a ");
572 pr_cont("TLB reload.\n");
590 static bool f15h_mc0_mce(u16 ec, u8 xec)
598 pr_cont("Data Array access error.\n");
602 pr_cont("UC error during a linefill from L2/NB.\n");
607 pr_cont("STQ access error.\n");
611 pr_cont("SCB access error.\n");
615 pr_cont("Tag error.\n");
619 pr_cont("LDQ access error.\n");
625 } else if (BUS_ERROR(ec)) {
628 pr_cont("System Read Data Error.\n");
630 pr_cont(" Internal error condition type %d.\n", xec);
631 } else if (INT_ERROR(ec)) {
633 pr_cont("Hardware Assert.\n");
643 static void decode_mc0_mce(struct mce *m)
645 u16 ec = EC(m->status);
646 u8 xec = XEC(m->status, xec_mask);
648 pr_emerg(HW_ERR "MC0 Error: ");
650 /* TLB error signatures are the same across families */
652 if (TT(ec) == TT_DATA) {
653 pr_cont("%s TLB %s.\n", LL_MSG(ec),
654 ((xec == 2) ? "locked miss"
655 : (xec ? "multimatch" : "parity")));
658 } else if (fam_ops.mc0_mce(ec, xec))
661 pr_emerg(HW_ERR "Corrupted MC0 MCE info?\n");
664 static bool k8_mc1_mce(u16 ec, u8 xec)
673 pr_cont("during a linefill from L2.\n");
674 else if (ll == 0x1) {
677 pr_cont("Parity error during data load.\n");
681 pr_cont("Copyback Parity/Victim error.\n");
685 pr_cont("Tag Snoop error.\n");
698 static bool cat_mc1_mce(u16 ec, u8 xec)
706 if (TT(ec) != TT_INSTR)
710 pr_cont("Data/tag array parity error for a tag hit.\n");
711 else if (r4 == R4_SNOOP)
712 pr_cont("Tag error during snoop/victimization.\n");
714 pr_cont("Tag parity error from victim castout.\n");
716 pr_cont("Microcode patch RAM parity error.\n");
723 static bool f15h_mc1_mce(u16 ec, u8 xec)
732 pr_cont("%s.\n", f15h_mc1_mce_desc[xec]);
736 pr_cont("%s.\n", f15h_mc1_mce_desc[xec-2]);
740 pr_cont("%s.\n", f15h_mc1_mce_desc[xec-4]);
744 pr_cont("Decoder %s parity error.\n", f15h_mc1_mce_desc[xec-4]);
753 static void decode_mc1_mce(struct mce *m)
755 u16 ec = EC(m->status);
756 u8 xec = XEC(m->status, xec_mask);
758 pr_emerg(HW_ERR "MC1 Error: ");
761 pr_cont("%s TLB %s.\n", LL_MSG(ec),
762 (xec ? "multimatch" : "parity error"));
763 else if (BUS_ERROR(ec)) {
764 bool k8 = (boot_cpu_data.x86 == 0xf && (m->status & BIT_64(58)));
766 pr_cont("during %s.\n", (k8 ? "system linefill" : "NB data read"));
767 } else if (INT_ERROR(ec)) {
769 pr_cont("Hardware Assert.\n");
772 } else if (fam_ops.mc1_mce(ec, xec))
780 pr_emerg(HW_ERR "Corrupted MC1 MCE info?\n");
783 static bool k8_mc2_mce(u16 ec, u8 xec)
788 pr_cont(" in the write data buffers.\n");
790 pr_cont(" in the victim data buffers.\n");
791 else if (xec == 0x2 && MEM_ERROR(ec))
792 pr_cont(": %s error in the L2 cache tags.\n", R4_MSG(ec));
793 else if (xec == 0x0) {
795 pr_cont("%s error in a Page Descriptor Cache or Guest TLB.\n",
797 else if (BUS_ERROR(ec))
798 pr_cont(": %s/ECC error in data read from NB: %s.\n",
799 R4_MSG(ec), PP_MSG(ec));
800 else if (MEM_ERROR(ec)) {
804 pr_cont(": %s error during data copyback.\n",
807 pr_cont(": %s parity/ECC error during data "
808 "access from L2.\n", R4_MSG(ec));
819 static bool f15h_mc2_mce(u16 ec, u8 xec)
825 pr_cont("Data parity TLB read error.\n");
827 pr_cont("Poison data provided for TLB fill.\n");
830 } else if (BUS_ERROR(ec)) {
834 pr_cont("Error during attempted NB data read.\n");
835 } else if (MEM_ERROR(ec)) {
838 pr_cont("%s.\n", f15h_mc2_mce_desc[xec - 0x4]);
842 pr_cont("%s.\n", f15h_mc2_mce_desc[xec - 0x7]);
848 } else if (INT_ERROR(ec)) {
850 pr_cont("Hardware Assert.\n");
858 static bool f16h_mc2_mce(u16 ec, u8 xec)
867 pr_cont("%cBUFF parity error.\n", (r4 == R4_RD) ? 'I' : 'O');
872 pr_cont("ECC error in L2 tag (%s).\n",
873 ((r4 == R4_GEN) ? "BankReq" :
874 ((r4 == R4_SNOOP) ? "Prb" : "Fill")));
879 pr_cont("ECC error in L2 data array (%s).\n",
880 (((r4 == R4_RD) && !(xec & 0x3)) ? "Hit" :
881 ((r4 == R4_GEN) ? "Attr" :
882 ((r4 == R4_EVICT) ? "Vict" : "Fill"))));
887 pr_cont("Parity error in L2 attribute bits (%s).\n",
888 ((r4 == R4_RD) ? "Hit" :
889 ((r4 == R4_GEN) ? "Attr" : "Fill")));
899 static void decode_mc2_mce(struct mce *m)
901 u16 ec = EC(m->status);
902 u8 xec = XEC(m->status, xec_mask);
904 pr_emerg(HW_ERR "MC2 Error: ");
906 if (!fam_ops.mc2_mce(ec, xec))
907 pr_cont(HW_ERR "Corrupted MC2 MCE info?\n");
910 static void decode_mc3_mce(struct mce *m)
912 u16 ec = EC(m->status);
913 u8 xec = XEC(m->status, xec_mask);
915 if (boot_cpu_data.x86 >= 0x14) {
916 pr_emerg("You shouldn't be seeing MC3 MCE on this cpu family,"
917 " please report on LKML.\n");
921 pr_emerg(HW_ERR "MC3 Error");
926 if (!BUS_ERROR(ec) || (r4 != R4_DRD && r4 != R4_DWR))
929 pr_cont(" during %s.\n", R4_MSG(ec));
936 pr_emerg(HW_ERR "Corrupted MC3 MCE info?\n");
939 static void decode_mc4_mce(struct mce *m)
941 unsigned int fam = x86_family(m->cpuid);
942 int node_id = topology_die_id(m->extcpu);
943 u16 ec = EC(m->status);
944 u8 xec = XEC(m->status, 0x1f);
947 pr_emerg(HW_ERR "MC4 Error (node %d): ", node_id);
952 /* special handling for DRAM ECCs */
953 if (xec == 0x0 || xec == 0x8) {
954 /* no ECCs on F11h */
958 pr_cont("%s.\n", mc4_mce_desc[xec]);
961 decode_dram_ecc(node_id, m);
968 pr_cont("GART Table Walk data error.\n");
969 else if (BUS_ERROR(ec))
970 pr_cont("DMA Exclusion Vector Table Walk error.\n");
976 if (fam == 0x15 || fam == 0x16)
977 pr_cont("Compute Unit Data Error.\n");
990 pr_cont("%s.\n", mc4_mce_desc[xec - offset]);
994 pr_emerg(HW_ERR "Corrupted MC4 MCE info?\n");
997 static void decode_mc5_mce(struct mce *m)
999 unsigned int fam = x86_family(m->cpuid);
1000 u16 ec = EC(m->status);
1001 u8 xec = XEC(m->status, xec_mask);
1003 if (fam == 0xf || fam == 0x11)
1006 pr_emerg(HW_ERR "MC5 Error: ");
1008 if (INT_ERROR(ec)) {
1010 pr_cont("Hardware Assert.\n");
1016 if (xec == 0x0 || xec == 0xc)
1017 pr_cont("%s.\n", mc5_mce_desc[xec]);
1018 else if (xec <= 0xd)
1019 pr_cont("%s parity error.\n", mc5_mce_desc[xec]);
1026 pr_emerg(HW_ERR "Corrupted MC5 MCE info?\n");
1029 static void decode_mc6_mce(struct mce *m)
1031 u8 xec = XEC(m->status, xec_mask);
1033 pr_emerg(HW_ERR "MC6 Error: ");
1038 pr_cont("%s parity error.\n", mc6_mce_desc[xec]);
1042 pr_emerg(HW_ERR "Corrupted MC6 MCE info?\n");
1045 /* Decode errors according to Scalable MCA specification */
1046 static void decode_smca_error(struct mce *m)
1048 struct smca_hwid *hwid;
1049 enum smca_bank_types bank_type;
1050 const char *ip_name;
1051 u8 xec = XEC(m->status, xec_mask);
1053 if (m->bank >= ARRAY_SIZE(smca_banks))
1056 hwid = smca_banks[m->bank].hwid;
1060 bank_type = hwid->bank_type;
1062 if (bank_type == SMCA_RESERVED) {
1063 pr_emerg(HW_ERR "Bank %d is reserved.\n", m->bank);
1067 ip_name = smca_get_long_name(bank_type);
1069 pr_emerg(HW_ERR "%s Ext. Error Code: %d", ip_name, xec);
1071 /* Only print the decode of valid error codes */
1072 if (xec < smca_mce_descs[bank_type].num_descs)
1073 pr_cont(", %s.\n", smca_mce_descs[bank_type].descs[xec]);
1075 if (bank_type == SMCA_UMC && xec == 0 && decode_dram_ecc)
1076 decode_dram_ecc(topology_die_id(m->extcpu), m);
1079 static inline void amd_decode_err_code(u16 ec)
1081 if (INT_ERROR(ec)) {
1082 pr_emerg(HW_ERR "internal: %s\n", UU_MSG(ec));
1086 pr_emerg(HW_ERR "cache level: %s", LL_MSG(ec));
1089 pr_cont(", mem/io: %s", II_MSG(ec));
1091 pr_cont(", tx: %s", TT_MSG(ec));
1093 if (MEM_ERROR(ec) || BUS_ERROR(ec)) {
1094 pr_cont(", mem-tx: %s", R4_MSG(ec));
1097 pr_cont(", part-proc: %s (%s)", PP_MSG(ec), TO_MSG(ec));
1103 static const char *decode_error_status(struct mce *m)
1105 if (m->status & MCI_STATUS_UC) {
1106 if (m->status & MCI_STATUS_PCC)
1107 return "System Fatal error.";
1108 if (m->mcgstatus & MCG_STATUS_RIPV)
1109 return "Uncorrected, software restartable error.";
1110 return "Uncorrected, software containable error.";
1113 if (m->status & MCI_STATUS_DEFERRED)
1114 return "Deferred error, no action required.";
1116 return "Corrected error, no action required.";
1120 amd_decode_mce(struct notifier_block *nb, unsigned long val, void *data)
1122 struct mce *m = (struct mce *)data;
1123 unsigned int fam = x86_family(m->cpuid);
1126 if (m->kflags & MCE_HANDLED_CEC)
1129 pr_emerg(HW_ERR "%s\n", decode_error_status(m));
1131 pr_emerg(HW_ERR "CPU:%d (%x:%x:%x) MC%d_STATUS[%s|%s|%s|%s|%s",
1133 fam, x86_model(m->cpuid), x86_stepping(m->cpuid),
1135 ((m->status & MCI_STATUS_OVER) ? "Over" : "-"),
1136 ((m->status & MCI_STATUS_UC) ? "UE" :
1137 (m->status & MCI_STATUS_DEFERRED) ? "-" : "CE"),
1138 ((m->status & MCI_STATUS_MISCV) ? "MiscV" : "-"),
1139 ((m->status & MCI_STATUS_ADDRV) ? "AddrV" : "-"),
1140 ((m->status & MCI_STATUS_PCC) ? "PCC" : "-"));
1142 if (boot_cpu_has(X86_FEATURE_SMCA)) {
1144 u32 addr = MSR_AMD64_SMCA_MCx_CONFIG(m->bank);
1146 if (!rdmsr_safe(addr, &low, &high) &&
1147 (low & MCI_CONFIG_MCAX))
1148 pr_cont("|%s", ((m->status & MCI_STATUS_TCC) ? "TCC" : "-"));
1150 pr_cont("|%s", ((m->status & MCI_STATUS_SYNDV) ? "SyndV" : "-"));
1153 /* do the two bits[14:13] together */
1154 ecc = (m->status >> 45) & 0x3;
1156 pr_cont("|%sECC", ((ecc == 2) ? "C" : "U"));
1159 pr_cont("|%s", (m->status & MCI_STATUS_DEFERRED ? "Deferred" : "-"));
1161 /* F15h, bank4, bit 43 is part of McaStatSubCache. */
1162 if (fam != 0x15 || m->bank != 4)
1163 pr_cont("|%s", (m->status & MCI_STATUS_POISON ? "Poison" : "-"));
1167 pr_cont("|%s", (m->status & MCI_STATUS_SCRUB ? "Scrub" : "-"));
1169 pr_cont("]: 0x%016llx\n", m->status);
1171 if (m->status & MCI_STATUS_ADDRV)
1172 pr_emerg(HW_ERR "Error Addr: 0x%016llx\n", m->addr);
1175 pr_emerg(HW_ERR "PPIN: 0x%016llx\n", m->ppin);
1177 if (boot_cpu_has(X86_FEATURE_SMCA)) {
1178 pr_emerg(HW_ERR "IPID: 0x%016llx", m->ipid);
1180 if (m->status & MCI_STATUS_SYNDV)
1181 pr_cont(", Syndrome: 0x%016llx", m->synd);
1185 decode_smca_error(m);
1190 pr_emerg(HW_ERR "TSC: %llu\n", m->tsc);
1192 /* Doesn't matter which member to test. */
1193 if (!fam_ops.mc0_mce)
1230 amd_decode_err_code(m->status & 0xffff);
1232 m->kflags |= MCE_HANDLED_EDAC;
1236 static struct notifier_block amd_mce_dec_nb = {
1237 .notifier_call = amd_decode_mce,
1238 .priority = MCE_PRIO_EDAC,
1241 static int __init mce_amd_init(void)
1243 struct cpuinfo_x86 *c = &boot_cpu_data;
1245 if (c->x86_vendor != X86_VENDOR_AMD &&
1246 c->x86_vendor != X86_VENDOR_HYGON)
1249 if (cpu_feature_enabled(X86_FEATURE_HYPERVISOR))
1252 if (boot_cpu_has(X86_FEATURE_SMCA)) {
1259 fam_ops.mc0_mce = k8_mc0_mce;
1260 fam_ops.mc1_mce = k8_mc1_mce;
1261 fam_ops.mc2_mce = k8_mc2_mce;
1265 fam_ops.mc0_mce = f10h_mc0_mce;
1266 fam_ops.mc1_mce = k8_mc1_mce;
1267 fam_ops.mc2_mce = k8_mc2_mce;
1271 fam_ops.mc0_mce = k8_mc0_mce;
1272 fam_ops.mc1_mce = k8_mc1_mce;
1273 fam_ops.mc2_mce = k8_mc2_mce;
1277 fam_ops.mc0_mce = f12h_mc0_mce;
1278 fam_ops.mc1_mce = k8_mc1_mce;
1279 fam_ops.mc2_mce = k8_mc2_mce;
1283 fam_ops.mc0_mce = cat_mc0_mce;
1284 fam_ops.mc1_mce = cat_mc1_mce;
1285 fam_ops.mc2_mce = k8_mc2_mce;
1289 xec_mask = c->x86_model == 0x60 ? 0x3f : 0x1f;
1291 fam_ops.mc0_mce = f15h_mc0_mce;
1292 fam_ops.mc1_mce = f15h_mc1_mce;
1293 fam_ops.mc2_mce = f15h_mc2_mce;
1298 fam_ops.mc0_mce = cat_mc0_mce;
1299 fam_ops.mc1_mce = cat_mc1_mce;
1300 fam_ops.mc2_mce = f16h_mc2_mce;
1305 pr_warn_once("Decoding supported only on Scalable MCA processors.\n");
1309 printk(KERN_WARNING "Huh? What family is it: 0x%x?!\n", c->x86);
1314 pr_info("MCE: In-kernel MCE decoding enabled.\n");
1316 mce_register_decode_chain(&amd_mce_dec_nb);
1320 early_initcall(mce_amd_init);
1323 static void __exit mce_amd_exit(void)
1325 mce_unregister_decode_chain(&amd_mce_dec_nb);
1328 MODULE_DESCRIPTION("AMD MCE decoder");
1329 MODULE_ALIAS("edac-mce-amd");
1330 MODULE_LICENSE("GPL");
1331 module_exit(mce_amd_exit);