This source file includes following definitions.
- ctl_page_to_phys
- do_process_ce
- process_ce
- do_process_ue
- process_ue
- process_ue_no_info_wr
- do_process_ded_retry
- process_ded_retry
- process_threshold_ce
- do_global_error
- global_error
- do_hub_error
- hub_error
- do_nsi_error
- nsi_error
- do_membuf_error
- membuf_error
- do_sysbus_error
- sysbus_error
- e752x_check_hub_interface
- e752x_check_ns_interface
- e752x_check_sysbus
- e752x_check_membuf
- e752x_check_dram
- e752x_get_error_info
- e752x_process_error_info
- e752x_check
- set_sdram_scrub_rate
- get_sdram_scrub_rate
- dual_channel_active
- remap_csrow_index
- e752x_init_csrows
- e752x_init_mem_map_table
- e752x_get_devs
- e752x_init_sysbus_parity_mask
- e752x_init_error_reporting_regs
- e752x_probe1
- e752x_init_one
- e752x_remove_one
- e752x_init
- e752x_exit
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22 #include <linux/module.h>
23 #include <linux/init.h>
24 #include <linux/pci.h>
25 #include <linux/pci_ids.h>
26 #include <linux/edac.h>
27 #include "edac_module.h"
28
29 #define EDAC_MOD_STR "e752x_edac"
30
31 static int report_non_memory_errors;
32 static int force_function_unhide;
33 static int sysbus_parity = -1;
34
35 static struct edac_pci_ctl_info *e752x_pci;
36
37 #define e752x_printk(level, fmt, arg...) \
38 edac_printk(level, "e752x", fmt, ##arg)
39
40 #define e752x_mc_printk(mci, level, fmt, arg...) \
41 edac_mc_chipset_printk(mci, level, "e752x", fmt, ##arg)
42
43 #ifndef PCI_DEVICE_ID_INTEL_7520_0
44 #define PCI_DEVICE_ID_INTEL_7520_0 0x3590
45 #endif
46
47 #ifndef PCI_DEVICE_ID_INTEL_7520_1_ERR
48 #define PCI_DEVICE_ID_INTEL_7520_1_ERR 0x3591
49 #endif
50
51 #ifndef PCI_DEVICE_ID_INTEL_7525_0
52 #define PCI_DEVICE_ID_INTEL_7525_0 0x359E
53 #endif
54
55 #ifndef PCI_DEVICE_ID_INTEL_7525_1_ERR
56 #define PCI_DEVICE_ID_INTEL_7525_1_ERR 0x3593
57 #endif
58
59 #ifndef PCI_DEVICE_ID_INTEL_7320_0
60 #define PCI_DEVICE_ID_INTEL_7320_0 0x3592
61 #endif
62
63 #ifndef PCI_DEVICE_ID_INTEL_7320_1_ERR
64 #define PCI_DEVICE_ID_INTEL_7320_1_ERR 0x3593
65 #endif
66
67 #ifndef PCI_DEVICE_ID_INTEL_3100_0
68 #define PCI_DEVICE_ID_INTEL_3100_0 0x35B0
69 #endif
70
71 #ifndef PCI_DEVICE_ID_INTEL_3100_1_ERR
72 #define PCI_DEVICE_ID_INTEL_3100_1_ERR 0x35B1
73 #endif
74
75 #define E752X_NR_CSROWS 8
76
77
78 #define E752X_MCHSCRB 0x52
79
80
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83
84
85
86 #define E752X_DRB 0x60
87 #define E752X_DRA 0x70
88
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97
98
99 #define E752X_DRC 0x7C
100
101
102
103
104
105 #define E752X_DRM 0x80
106 #define E752X_DDRCSR 0x9A
107
108
109
110 #define E752X_TOLM 0xC4
111 #define E752X_REMAPBASE 0xC6
112 #define E752X_REMAPLIMIT 0xC8
113 #define E752X_REMAPOFFSET 0xCA
114
115
116 #define E752X_FERR_GLOBAL 0x40
117 #define E752X_NERR_GLOBAL 0x44
118 #define E752X_HI_FERR 0x50
119 #define E752X_HI_NERR 0x52
120 #define E752X_HI_ERRMASK 0x54
121 #define E752X_HI_SMICMD 0x5A
122 #define E752X_SYSBUS_FERR 0x60
123 #define E752X_SYSBUS_NERR 0x62
124 #define E752X_SYSBUS_ERRMASK 0x64
125 #define E752X_SYSBUS_SMICMD 0x6A
126 #define E752X_BUF_FERR 0x70
127 #define E752X_BUF_NERR 0x72
128 #define E752X_BUF_ERRMASK 0x74
129 #define E752X_BUF_SMICMD 0x7A
130 #define E752X_DRAM_FERR 0x80
131 #define E752X_DRAM_NERR 0x82
132 #define E752X_DRAM_ERRMASK 0x84
133 #define E752X_DRAM_SMICMD 0x8A
134 #define E752X_DRAM_RETR_ADD 0xAC
135 #define E752X_DRAM_SEC1_ADD 0xA0
136
137
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139
140
141
142
143 #define E752X_DRAM_SEC2_ADD 0xC8
144
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149
150
151 #define E752X_DRAM_DED_ADD 0xA4
152
153
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155
156
157
158
159 #define E752X_DRAM_SCRB_ADD 0xA8
160
161
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164
165
166
167 #define E752X_DRAM_SEC1_SYNDROME 0xC4
168
169 #define E752X_DRAM_SEC2_SYNDROME 0xC6
170
171 #define E752X_DEVPRES1 0xF4
172
173
174 #define I3100_NSI_FERR 0x48
175 #define I3100_NSI_NERR 0x4C
176 #define I3100_NSI_SMICMD 0x54
177 #define I3100_NSI_EMASK 0x90
178
179
180 #define ICH5R_PCI_STAT 0x06
181 #define ICH5R_PCI_2ND_STAT 0x1E
182 #define ICH5R_PCI_BRIDGE_CTL 0x3E
183
184 enum e752x_chips {
185 E7520 = 0,
186 E7525 = 1,
187 E7320 = 2,
188 I3100 = 3
189 };
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209
210 struct e752x_pvt {
211 struct pci_dev *dev_d0f0;
212 struct pci_dev *dev_d0f1;
213 u32 tolm;
214 u32 remapbase;
215 u32 remaplimit;
216 int mc_symmetric;
217 u8 map[8];
218 int map_type;
219 const struct e752x_dev_info *dev_info;
220 };
221
222 struct e752x_dev_info {
223 u16 err_dev;
224 u16 ctl_dev;
225 const char *ctl_name;
226 };
227
228 struct e752x_error_info {
229 u32 ferr_global;
230 u32 nerr_global;
231 u32 nsi_ferr;
232 u32 nsi_nerr;
233 u8 hi_ferr;
234 u8 hi_nerr;
235 u16 sysbus_ferr;
236 u16 sysbus_nerr;
237 u8 buf_ferr;
238 u8 buf_nerr;
239 u16 dram_ferr;
240 u16 dram_nerr;
241 u32 dram_sec1_add;
242 u32 dram_sec2_add;
243 u16 dram_sec1_syndrome;
244 u16 dram_sec2_syndrome;
245 u32 dram_ded_add;
246 u32 dram_scrb_add;
247 u32 dram_retr_add;
248 };
249
250 static const struct e752x_dev_info e752x_devs[] = {
251 [E7520] = {
252 .err_dev = PCI_DEVICE_ID_INTEL_7520_1_ERR,
253 .ctl_dev = PCI_DEVICE_ID_INTEL_7520_0,
254 .ctl_name = "E7520"},
255 [E7525] = {
256 .err_dev = PCI_DEVICE_ID_INTEL_7525_1_ERR,
257 .ctl_dev = PCI_DEVICE_ID_INTEL_7525_0,
258 .ctl_name = "E7525"},
259 [E7320] = {
260 .err_dev = PCI_DEVICE_ID_INTEL_7320_1_ERR,
261 .ctl_dev = PCI_DEVICE_ID_INTEL_7320_0,
262 .ctl_name = "E7320"},
263 [I3100] = {
264 .err_dev = PCI_DEVICE_ID_INTEL_3100_1_ERR,
265 .ctl_dev = PCI_DEVICE_ID_INTEL_3100_0,
266 .ctl_name = "3100"},
267 };
268
269
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271
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273
274
275
276 #define SDRATE_EOT 0xFFFFFFFF
277
278 struct scrubrate {
279 u32 bandwidth;
280 u16 scrubval;
281 };
282
283
284
285
286
287
288 static const struct scrubrate scrubrates_e752x[] = {
289 {0, 0x00},
290 {500000, 0x02},
291 {SDRATE_EOT, 0x00}
292 };
293
294
295
296
297 static const struct scrubrate scrubrates_i3100[] = {
298 {0, 0x00},
299 {500000, 0x0a},
300 {62500000, 0x06},
301 {SDRATE_EOT, 0x00}
302 };
303
304 static unsigned long ctl_page_to_phys(struct mem_ctl_info *mci,
305 unsigned long page)
306 {
307 u32 remap;
308 struct e752x_pvt *pvt = (struct e752x_pvt *)mci->pvt_info;
309
310 edac_dbg(3, "\n");
311
312 if (page < pvt->tolm)
313 return page;
314
315 if ((page >= 0x100000) && (page < pvt->remapbase))
316 return page;
317
318 remap = (page - pvt->tolm) + pvt->remapbase;
319
320 if (remap < pvt->remaplimit)
321 return remap;
322
323 e752x_printk(KERN_ERR, "Invalid page %lx - out of range\n", page);
324 return pvt->tolm - 1;
325 }
326
327 static void do_process_ce(struct mem_ctl_info *mci, u16 error_one,
328 u32 sec1_add, u16 sec1_syndrome)
329 {
330 u32 page;
331 int row;
332 int channel;
333 int i;
334 struct e752x_pvt *pvt = (struct e752x_pvt *)mci->pvt_info;
335
336 edac_dbg(3, "\n");
337
338
339 page = sec1_add >> (PAGE_SHIFT - 4);
340
341
342 if (pvt->mc_symmetric) {
343
344 row = ((page >> 1) & 3);
345 e752x_printk(KERN_WARNING,
346 "Test row %d Table %d %d %d %d %d %d %d %d\n", row,
347 pvt->map[0], pvt->map[1], pvt->map[2], pvt->map[3],
348 pvt->map[4], pvt->map[5], pvt->map[6],
349 pvt->map[7]);
350
351
352 for (i = 0; i < 8; i++) {
353 if (pvt->map[i] == row)
354 break;
355 }
356
357 e752x_printk(KERN_WARNING, "Test computed row %d\n", i);
358
359 if (i < 8)
360 row = i;
361 else
362 e752x_mc_printk(mci, KERN_WARNING,
363 "row %d not found in remap table\n",
364 row);
365 } else
366 row = edac_mc_find_csrow_by_page(mci, page);
367
368
369 channel = !(error_one & 1);
370
371
372 edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1,
373 page, offset_in_page(sec1_add << 4), sec1_syndrome,
374 row, channel, -1,
375 "e752x CE", "");
376 }
377
378 static inline void process_ce(struct mem_ctl_info *mci, u16 error_one,
379 u32 sec1_add, u16 sec1_syndrome, int *error_found,
380 int handle_error)
381 {
382 *error_found = 1;
383
384 if (handle_error)
385 do_process_ce(mci, error_one, sec1_add, sec1_syndrome);
386 }
387
388 static void do_process_ue(struct mem_ctl_info *mci, u16 error_one,
389 u32 ded_add, u32 scrb_add)
390 {
391 u32 error_2b, block_page;
392 int row;
393 struct e752x_pvt *pvt = (struct e752x_pvt *)mci->pvt_info;
394
395 edac_dbg(3, "\n");
396
397 if (error_one & 0x0202) {
398 error_2b = ded_add;
399
400
401 block_page = error_2b >> (PAGE_SHIFT - 4);
402
403 row = pvt->mc_symmetric ?
404
405 ((block_page >> 1) & 3) :
406 edac_mc_find_csrow_by_page(mci, block_page);
407
408
409 edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1,
410 block_page,
411 offset_in_page(error_2b << 4), 0,
412 row, -1, -1,
413 "e752x UE from Read", "");
414
415 }
416 if (error_one & 0x0404) {
417 error_2b = scrb_add;
418
419
420 block_page = error_2b >> (PAGE_SHIFT - 4);
421
422 row = pvt->mc_symmetric ?
423
424 ((block_page >> 1) & 3) :
425 edac_mc_find_csrow_by_page(mci, block_page);
426
427
428 edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1,
429 block_page,
430 offset_in_page(error_2b << 4), 0,
431 row, -1, -1,
432 "e752x UE from Scruber", "");
433 }
434 }
435
436 static inline void process_ue(struct mem_ctl_info *mci, u16 error_one,
437 u32 ded_add, u32 scrb_add, int *error_found,
438 int handle_error)
439 {
440 *error_found = 1;
441
442 if (handle_error)
443 do_process_ue(mci, error_one, ded_add, scrb_add);
444 }
445
446 static inline void process_ue_no_info_wr(struct mem_ctl_info *mci,
447 int *error_found, int handle_error)
448 {
449 *error_found = 1;
450
451 if (!handle_error)
452 return;
453
454 edac_dbg(3, "\n");
455 edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1, 0, 0, 0,
456 -1, -1, -1,
457 "e752x UE log memory write", "");
458 }
459
460 static void do_process_ded_retry(struct mem_ctl_info *mci, u16 error,
461 u32 retry_add)
462 {
463 u32 error_1b, page;
464 int row;
465 struct e752x_pvt *pvt = (struct e752x_pvt *)mci->pvt_info;
466
467 error_1b = retry_add;
468 page = error_1b >> (PAGE_SHIFT - 4);
469
470
471 row = pvt->mc_symmetric ? ((page >> 1) & 3) :
472 edac_mc_find_csrow_by_page(mci, page);
473
474 e752x_mc_printk(mci, KERN_WARNING,
475 "CE page 0x%lx, row %d : Memory read retry\n",
476 (long unsigned int)page, row);
477 }
478
479 static inline void process_ded_retry(struct mem_ctl_info *mci, u16 error,
480 u32 retry_add, int *error_found,
481 int handle_error)
482 {
483 *error_found = 1;
484
485 if (handle_error)
486 do_process_ded_retry(mci, error, retry_add);
487 }
488
489 static inline void process_threshold_ce(struct mem_ctl_info *mci, u16 error,
490 int *error_found, int handle_error)
491 {
492 *error_found = 1;
493
494 if (handle_error)
495 e752x_mc_printk(mci, KERN_WARNING, "Memory threshold CE\n");
496 }
497
498 static char *global_message[11] = {
499 "PCI Express C1",
500 "PCI Express C",
501 "PCI Express B1",
502 "PCI Express B",
503 "PCI Express A1",
504 "PCI Express A",
505 "DMA Controller",
506 "HUB or NS Interface",
507 "System Bus",
508 "DRAM Controller",
509 "Internal Buffer"
510 };
511
512 #define DRAM_ENTRY 9
513
514 static char *fatal_message[2] = { "Non-Fatal ", "Fatal " };
515
516 static void do_global_error(int fatal, u32 errors)
517 {
518 int i;
519
520 for (i = 0; i < 11; i++) {
521 if (errors & (1 << i)) {
522
523
524
525
526 if ((i == DRAM_ENTRY) || report_non_memory_errors)
527 e752x_printk(KERN_WARNING, "%sError %s\n",
528 fatal_message[fatal],
529 global_message[i]);
530 }
531 }
532 }
533
534 static inline void global_error(int fatal, u32 errors, int *error_found,
535 int handle_error)
536 {
537 *error_found = 1;
538
539 if (handle_error)
540 do_global_error(fatal, errors);
541 }
542
543 static char *hub_message[7] = {
544 "HI Address or Command Parity", "HI Illegal Access",
545 "HI Internal Parity", "Out of Range Access",
546 "HI Data Parity", "Enhanced Config Access",
547 "Hub Interface Target Abort"
548 };
549
550 static void do_hub_error(int fatal, u8 errors)
551 {
552 int i;
553
554 for (i = 0; i < 7; i++) {
555 if (errors & (1 << i))
556 e752x_printk(KERN_WARNING, "%sError %s\n",
557 fatal_message[fatal], hub_message[i]);
558 }
559 }
560
561 static inline void hub_error(int fatal, u8 errors, int *error_found,
562 int handle_error)
563 {
564 *error_found = 1;
565
566 if (handle_error)
567 do_hub_error(fatal, errors);
568 }
569
570 #define NSI_FATAL_MASK 0x0c080081
571 #define NSI_NON_FATAL_MASK 0x23a0ba64
572 #define NSI_ERR_MASK (NSI_FATAL_MASK | NSI_NON_FATAL_MASK)
573
574 static char *nsi_message[30] = {
575 "NSI Link Down",
576 "",
577 "NSI Parity Error",
578 "",
579 "",
580 "Correctable Error Message",
581 "Non-Fatal Error Message",
582 "Fatal Error Message",
583 "",
584 "Receiver Error",
585 "",
586 "Bad TLP",
587 "Bad DLLP",
588 "REPLAY_NUM Rollover",
589 "",
590 "Replay Timer Timeout",
591 "",
592 "",
593 "",
594 "Data Link Protocol Error",
595 "",
596 "Poisoned TLP",
597 "",
598 "Completion Timeout",
599 "Completer Abort",
600 "Unexpected Completion",
601 "Receiver Overflow",
602 "Malformed TLP",
603 "",
604 "Unsupported Request"
605 };
606
607 static void do_nsi_error(int fatal, u32 errors)
608 {
609 int i;
610
611 for (i = 0; i < 30; i++) {
612 if (errors & (1 << i))
613 printk(KERN_WARNING "%sError %s\n",
614 fatal_message[fatal], nsi_message[i]);
615 }
616 }
617
618 static inline void nsi_error(int fatal, u32 errors, int *error_found,
619 int handle_error)
620 {
621 *error_found = 1;
622
623 if (handle_error)
624 do_nsi_error(fatal, errors);
625 }
626
627 static char *membuf_message[4] = {
628 "Internal PMWB to DRAM parity",
629 "Internal PMWB to System Bus Parity",
630 "Internal System Bus or IO to PMWB Parity",
631 "Internal DRAM to PMWB Parity"
632 };
633
634 static void do_membuf_error(u8 errors)
635 {
636 int i;
637
638 for (i = 0; i < 4; i++) {
639 if (errors & (1 << i))
640 e752x_printk(KERN_WARNING, "Non-Fatal Error %s\n",
641 membuf_message[i]);
642 }
643 }
644
645 static inline void membuf_error(u8 errors, int *error_found, int handle_error)
646 {
647 *error_found = 1;
648
649 if (handle_error)
650 do_membuf_error(errors);
651 }
652
653 static char *sysbus_message[10] = {
654 "Addr or Request Parity",
655 "Data Strobe Glitch",
656 "Addr Strobe Glitch",
657 "Data Parity",
658 "Addr Above TOM",
659 "Non DRAM Lock Error",
660 "MCERR", "BINIT",
661 "Memory Parity",
662 "IO Subsystem Parity"
663 };
664
665 static void do_sysbus_error(int fatal, u32 errors)
666 {
667 int i;
668
669 for (i = 0; i < 10; i++) {
670 if (errors & (1 << i))
671 e752x_printk(KERN_WARNING, "%sError System Bus %s\n",
672 fatal_message[fatal], sysbus_message[i]);
673 }
674 }
675
676 static inline void sysbus_error(int fatal, u32 errors, int *error_found,
677 int handle_error)
678 {
679 *error_found = 1;
680
681 if (handle_error)
682 do_sysbus_error(fatal, errors);
683 }
684
685 static void e752x_check_hub_interface(struct e752x_error_info *info,
686 int *error_found, int handle_error)
687 {
688 u8 stat8;
689
690
691
692 stat8 = info->hi_ferr;
693
694 if (stat8 & 0x7f) {
695 stat8 &= 0x7f;
696
697 if (stat8 & 0x2b)
698 hub_error(1, stat8 & 0x2b, error_found, handle_error);
699
700 if (stat8 & 0x54)
701 hub_error(0, stat8 & 0x54, error_found, handle_error);
702 }
703
704
705 stat8 = info->hi_nerr;
706
707 if (stat8 & 0x7f) {
708 stat8 &= 0x7f;
709
710 if (stat8 & 0x2b)
711 hub_error(1, stat8 & 0x2b, error_found, handle_error);
712
713 if (stat8 & 0x54)
714 hub_error(0, stat8 & 0x54, error_found, handle_error);
715 }
716 }
717
718 static void e752x_check_ns_interface(struct e752x_error_info *info,
719 int *error_found, int handle_error)
720 {
721 u32 stat32;
722
723 stat32 = info->nsi_ferr;
724 if (stat32 & NSI_ERR_MASK) {
725 if (stat32 & NSI_FATAL_MASK)
726 nsi_error(1, stat32 & NSI_FATAL_MASK, error_found,
727 handle_error);
728 if (stat32 & NSI_NON_FATAL_MASK)
729 nsi_error(0, stat32 & NSI_NON_FATAL_MASK, error_found,
730 handle_error);
731 }
732 stat32 = info->nsi_nerr;
733 if (stat32 & NSI_ERR_MASK) {
734 if (stat32 & NSI_FATAL_MASK)
735 nsi_error(1, stat32 & NSI_FATAL_MASK, error_found,
736 handle_error);
737 if (stat32 & NSI_NON_FATAL_MASK)
738 nsi_error(0, stat32 & NSI_NON_FATAL_MASK, error_found,
739 handle_error);
740 }
741 }
742
743 static void e752x_check_sysbus(struct e752x_error_info *info,
744 int *error_found, int handle_error)
745 {
746 u32 stat32, error32;
747
748
749 stat32 = info->sysbus_ferr + (info->sysbus_nerr << 16);
750
751 if (stat32 == 0)
752 return;
753
754 error32 = (stat32 >> 16) & 0x3ff;
755 stat32 = stat32 & 0x3ff;
756
757 if (stat32 & 0x087)
758 sysbus_error(1, stat32 & 0x087, error_found, handle_error);
759
760 if (stat32 & 0x378)
761 sysbus_error(0, stat32 & 0x378, error_found, handle_error);
762
763 if (error32 & 0x087)
764 sysbus_error(1, error32 & 0x087, error_found, handle_error);
765
766 if (error32 & 0x378)
767 sysbus_error(0, error32 & 0x378, error_found, handle_error);
768 }
769
770 static void e752x_check_membuf(struct e752x_error_info *info,
771 int *error_found, int handle_error)
772 {
773 u8 stat8;
774
775 stat8 = info->buf_ferr;
776
777 if (stat8 & 0x0f) {
778 stat8 &= 0x0f;
779 membuf_error(stat8, error_found, handle_error);
780 }
781
782 stat8 = info->buf_nerr;
783
784 if (stat8 & 0x0f) {
785 stat8 &= 0x0f;
786 membuf_error(stat8, error_found, handle_error);
787 }
788 }
789
790 static void e752x_check_dram(struct mem_ctl_info *mci,
791 struct e752x_error_info *info, int *error_found,
792 int handle_error)
793 {
794 u16 error_one, error_next;
795
796 error_one = info->dram_ferr;
797 error_next = info->dram_nerr;
798
799
800 if (error_one & 0x0101)
801 process_ce(mci, error_one, info->dram_sec1_add,
802 info->dram_sec1_syndrome, error_found, handle_error);
803
804 if (error_next & 0x0101)
805 process_ce(mci, error_next, info->dram_sec2_add,
806 info->dram_sec2_syndrome, error_found, handle_error);
807
808 if (error_one & 0x4040)
809 process_ue_no_info_wr(mci, error_found, handle_error);
810
811 if (error_next & 0x4040)
812 process_ue_no_info_wr(mci, error_found, handle_error);
813
814 if (error_one & 0x2020)
815 process_ded_retry(mci, error_one, info->dram_retr_add,
816 error_found, handle_error);
817
818 if (error_next & 0x2020)
819 process_ded_retry(mci, error_next, info->dram_retr_add,
820 error_found, handle_error);
821
822 if (error_one & 0x0808)
823 process_threshold_ce(mci, error_one, error_found, handle_error);
824
825 if (error_next & 0x0808)
826 process_threshold_ce(mci, error_next, error_found,
827 handle_error);
828
829 if (error_one & 0x0606)
830 process_ue(mci, error_one, info->dram_ded_add,
831 info->dram_scrb_add, error_found, handle_error);
832
833 if (error_next & 0x0606)
834 process_ue(mci, error_next, info->dram_ded_add,
835 info->dram_scrb_add, error_found, handle_error);
836 }
837
838 static void e752x_get_error_info(struct mem_ctl_info *mci,
839 struct e752x_error_info *info)
840 {
841 struct pci_dev *dev;
842 struct e752x_pvt *pvt;
843
844 memset(info, 0, sizeof(*info));
845 pvt = (struct e752x_pvt *)mci->pvt_info;
846 dev = pvt->dev_d0f1;
847 pci_read_config_dword(dev, E752X_FERR_GLOBAL, &info->ferr_global);
848
849 if (info->ferr_global) {
850 if (pvt->dev_info->err_dev == PCI_DEVICE_ID_INTEL_3100_1_ERR) {
851 pci_read_config_dword(dev, I3100_NSI_FERR,
852 &info->nsi_ferr);
853 info->hi_ferr = 0;
854 } else {
855 pci_read_config_byte(dev, E752X_HI_FERR,
856 &info->hi_ferr);
857 info->nsi_ferr = 0;
858 }
859 pci_read_config_word(dev, E752X_SYSBUS_FERR,
860 &info->sysbus_ferr);
861 pci_read_config_byte(dev, E752X_BUF_FERR, &info->buf_ferr);
862 pci_read_config_word(dev, E752X_DRAM_FERR, &info->dram_ferr);
863 pci_read_config_dword(dev, E752X_DRAM_SEC1_ADD,
864 &info->dram_sec1_add);
865 pci_read_config_word(dev, E752X_DRAM_SEC1_SYNDROME,
866 &info->dram_sec1_syndrome);
867 pci_read_config_dword(dev, E752X_DRAM_DED_ADD,
868 &info->dram_ded_add);
869 pci_read_config_dword(dev, E752X_DRAM_SCRB_ADD,
870 &info->dram_scrb_add);
871 pci_read_config_dword(dev, E752X_DRAM_RETR_ADD,
872 &info->dram_retr_add);
873
874
875 if (info->hi_ferr & 0x7f)
876 pci_write_config_byte(dev, E752X_HI_FERR,
877 info->hi_ferr);
878
879 if (info->nsi_ferr & NSI_ERR_MASK)
880 pci_write_config_dword(dev, I3100_NSI_FERR,
881 info->nsi_ferr);
882
883 if (info->sysbus_ferr)
884 pci_write_config_word(dev, E752X_SYSBUS_FERR,
885 info->sysbus_ferr);
886
887 if (info->buf_ferr & 0x0f)
888 pci_write_config_byte(dev, E752X_BUF_FERR,
889 info->buf_ferr);
890
891 if (info->dram_ferr)
892 pci_write_bits16(pvt->dev_d0f1, E752X_DRAM_FERR,
893 info->dram_ferr, info->dram_ferr);
894
895 pci_write_config_dword(dev, E752X_FERR_GLOBAL,
896 info->ferr_global);
897 }
898
899 pci_read_config_dword(dev, E752X_NERR_GLOBAL, &info->nerr_global);
900
901 if (info->nerr_global) {
902 if (pvt->dev_info->err_dev == PCI_DEVICE_ID_INTEL_3100_1_ERR) {
903 pci_read_config_dword(dev, I3100_NSI_NERR,
904 &info->nsi_nerr);
905 info->hi_nerr = 0;
906 } else {
907 pci_read_config_byte(dev, E752X_HI_NERR,
908 &info->hi_nerr);
909 info->nsi_nerr = 0;
910 }
911 pci_read_config_word(dev, E752X_SYSBUS_NERR,
912 &info->sysbus_nerr);
913 pci_read_config_byte(dev, E752X_BUF_NERR, &info->buf_nerr);
914 pci_read_config_word(dev, E752X_DRAM_NERR, &info->dram_nerr);
915 pci_read_config_dword(dev, E752X_DRAM_SEC2_ADD,
916 &info->dram_sec2_add);
917 pci_read_config_word(dev, E752X_DRAM_SEC2_SYNDROME,
918 &info->dram_sec2_syndrome);
919
920 if (info->hi_nerr & 0x7f)
921 pci_write_config_byte(dev, E752X_HI_NERR,
922 info->hi_nerr);
923
924 if (info->nsi_nerr & NSI_ERR_MASK)
925 pci_write_config_dword(dev, I3100_NSI_NERR,
926 info->nsi_nerr);
927
928 if (info->sysbus_nerr)
929 pci_write_config_word(dev, E752X_SYSBUS_NERR,
930 info->sysbus_nerr);
931
932 if (info->buf_nerr & 0x0f)
933 pci_write_config_byte(dev, E752X_BUF_NERR,
934 info->buf_nerr);
935
936 if (info->dram_nerr)
937 pci_write_bits16(pvt->dev_d0f1, E752X_DRAM_NERR,
938 info->dram_nerr, info->dram_nerr);
939
940 pci_write_config_dword(dev, E752X_NERR_GLOBAL,
941 info->nerr_global);
942 }
943 }
944
945 static int e752x_process_error_info(struct mem_ctl_info *mci,
946 struct e752x_error_info *info,
947 int handle_errors)
948 {
949 u32 error32, stat32;
950 int error_found;
951
952 error_found = 0;
953 error32 = (info->ferr_global >> 18) & 0x3ff;
954 stat32 = (info->ferr_global >> 4) & 0x7ff;
955
956 if (error32)
957 global_error(1, error32, &error_found, handle_errors);
958
959 if (stat32)
960 global_error(0, stat32, &error_found, handle_errors);
961
962 error32 = (info->nerr_global >> 18) & 0x3ff;
963 stat32 = (info->nerr_global >> 4) & 0x7ff;
964
965 if (error32)
966 global_error(1, error32, &error_found, handle_errors);
967
968 if (stat32)
969 global_error(0, stat32, &error_found, handle_errors);
970
971 e752x_check_hub_interface(info, &error_found, handle_errors);
972 e752x_check_ns_interface(info, &error_found, handle_errors);
973 e752x_check_sysbus(info, &error_found, handle_errors);
974 e752x_check_membuf(info, &error_found, handle_errors);
975 e752x_check_dram(mci, info, &error_found, handle_errors);
976 return error_found;
977 }
978
979 static void e752x_check(struct mem_ctl_info *mci)
980 {
981 struct e752x_error_info info;
982
983 edac_dbg(3, "\n");
984 e752x_get_error_info(mci, &info);
985 e752x_process_error_info(mci, &info, 1);
986 }
987
988
989 static int set_sdram_scrub_rate(struct mem_ctl_info *mci, u32 new_bw)
990 {
991 const struct scrubrate *scrubrates;
992 struct e752x_pvt *pvt = (struct e752x_pvt *) mci->pvt_info;
993 struct pci_dev *pdev = pvt->dev_d0f0;
994 int i;
995
996 if (pvt->dev_info->ctl_dev == PCI_DEVICE_ID_INTEL_3100_0)
997 scrubrates = scrubrates_i3100;
998 else
999 scrubrates = scrubrates_e752x;
1000
1001
1002
1003
1004
1005 for (i = 0; scrubrates[i].bandwidth != SDRATE_EOT; i++)
1006 if (scrubrates[i].bandwidth >= new_bw)
1007 break;
1008
1009 if (scrubrates[i].bandwidth == SDRATE_EOT)
1010 return -1;
1011
1012 pci_write_config_word(pdev, E752X_MCHSCRB, scrubrates[i].scrubval);
1013
1014 return scrubrates[i].bandwidth;
1015 }
1016
1017
1018 static int get_sdram_scrub_rate(struct mem_ctl_info *mci)
1019 {
1020 const struct scrubrate *scrubrates;
1021 struct e752x_pvt *pvt = (struct e752x_pvt *) mci->pvt_info;
1022 struct pci_dev *pdev = pvt->dev_d0f0;
1023 u16 scrubval;
1024 int i;
1025
1026 if (pvt->dev_info->ctl_dev == PCI_DEVICE_ID_INTEL_3100_0)
1027 scrubrates = scrubrates_i3100;
1028 else
1029 scrubrates = scrubrates_e752x;
1030
1031
1032 pci_read_config_word(pdev, E752X_MCHSCRB, &scrubval);
1033 scrubval = scrubval & 0x0f;
1034
1035 for (i = 0; scrubrates[i].bandwidth != SDRATE_EOT; i++)
1036 if (scrubrates[i].scrubval == scrubval)
1037 break;
1038
1039 if (scrubrates[i].bandwidth == SDRATE_EOT) {
1040 e752x_printk(KERN_WARNING,
1041 "Invalid sdram scrub control value: 0x%x\n", scrubval);
1042 return -1;
1043 }
1044 return scrubrates[i].bandwidth;
1045
1046 }
1047
1048
1049 static inline int dual_channel_active(u16 ddrcsr)
1050 {
1051 return (((ddrcsr >> 12) & 3) == 3);
1052 }
1053
1054
1055
1056 static inline int remap_csrow_index(struct mem_ctl_info *mci, int index)
1057 {
1058 struct e752x_pvt *pvt = mci->pvt_info;
1059
1060 if (!pvt->map_type)
1061 return (7 - index);
1062
1063 return (index);
1064 }
1065
1066 static void e752x_init_csrows(struct mem_ctl_info *mci, struct pci_dev *pdev,
1067 u16 ddrcsr)
1068 {
1069 struct csrow_info *csrow;
1070 enum edac_type edac_mode;
1071 unsigned long last_cumul_size;
1072 int index, mem_dev, drc_chan;
1073 int drc_drbg;
1074 int drc_ddim;
1075 u8 value;
1076 u32 dra, drc, cumul_size, i, nr_pages;
1077
1078 dra = 0;
1079 for (index = 0; index < 4; index++) {
1080 u8 dra_reg;
1081 pci_read_config_byte(pdev, E752X_DRA + index, &dra_reg);
1082 dra |= dra_reg << (index * 8);
1083 }
1084 pci_read_config_dword(pdev, E752X_DRC, &drc);
1085 drc_chan = dual_channel_active(ddrcsr) ? 1 : 0;
1086 drc_drbg = drc_chan + 1;
1087 drc_ddim = (drc >> 20) & 0x3;
1088
1089
1090
1091
1092
1093
1094 for (last_cumul_size = index = 0; index < mci->nr_csrows; index++) {
1095
1096 mem_dev = (dra >> (index * 4 + 2)) & 0x3;
1097 csrow = mci->csrows[remap_csrow_index(mci, index)];
1098
1099 mem_dev = (mem_dev == 2);
1100 pci_read_config_byte(pdev, E752X_DRB + index, &value);
1101
1102 cumul_size = value << (25 + drc_drbg - PAGE_SHIFT);
1103 edac_dbg(3, "(%d) cumul_size 0x%x\n", index, cumul_size);
1104 if (cumul_size == last_cumul_size)
1105 continue;
1106
1107 csrow->first_page = last_cumul_size;
1108 csrow->last_page = cumul_size - 1;
1109 nr_pages = cumul_size - last_cumul_size;
1110 last_cumul_size = cumul_size;
1111
1112
1113
1114
1115
1116 if (drc_ddim) {
1117 if (drc_chan && mem_dev) {
1118 edac_mode = EDAC_S4ECD4ED;
1119 mci->edac_cap |= EDAC_FLAG_S4ECD4ED;
1120 } else {
1121 edac_mode = EDAC_SECDED;
1122 mci->edac_cap |= EDAC_FLAG_SECDED;
1123 }
1124 } else
1125 edac_mode = EDAC_NONE;
1126 for (i = 0; i < csrow->nr_channels; i++) {
1127 struct dimm_info *dimm = csrow->channels[i]->dimm;
1128
1129 edac_dbg(3, "Initializing rank at (%i,%i)\n", index, i);
1130 dimm->nr_pages = nr_pages / csrow->nr_channels;
1131 dimm->grain = 1 << 12;
1132 dimm->mtype = MEM_RDDR;
1133 dimm->dtype = mem_dev ? DEV_X4 : DEV_X8;
1134 dimm->edac_mode = edac_mode;
1135 }
1136 }
1137 }
1138
1139 static void e752x_init_mem_map_table(struct pci_dev *pdev,
1140 struct e752x_pvt *pvt)
1141 {
1142 int index;
1143 u8 value, last, row;
1144
1145 last = 0;
1146 row = 0;
1147
1148 for (index = 0; index < 8; index += 2) {
1149 pci_read_config_byte(pdev, E752X_DRB + index, &value);
1150
1151 if (value == last) {
1152
1153 pvt->map[index] = 0xff;
1154 pvt->map[index + 1] = 0xff;
1155 } else {
1156 pvt->map[index] = row;
1157 row++;
1158 last = value;
1159
1160
1161
1162 pci_read_config_byte(pdev, E752X_DRB + index + 1,
1163 &value);
1164
1165
1166
1167 pvt->map[index + 1] = (value == last) ? 0xff : row;
1168 row++;
1169 last = value;
1170 }
1171 }
1172 }
1173
1174
1175 static int e752x_get_devs(struct pci_dev *pdev, int dev_idx,
1176 struct e752x_pvt *pvt)
1177 {
1178 pvt->dev_d0f1 = pci_get_device(PCI_VENDOR_ID_INTEL,
1179 pvt->dev_info->err_dev, NULL);
1180
1181 if (pvt->dev_d0f1 == NULL) {
1182 pvt->dev_d0f1 = pci_scan_single_device(pdev->bus,
1183 PCI_DEVFN(0, 1));
1184 pci_dev_get(pvt->dev_d0f1);
1185 }
1186
1187 if (pvt->dev_d0f1 == NULL) {
1188 e752x_printk(KERN_ERR, "error reporting device not found:"
1189 "vendor %x device 0x%x (broken BIOS?)\n",
1190 PCI_VENDOR_ID_INTEL, e752x_devs[dev_idx].err_dev);
1191 return 1;
1192 }
1193
1194 pvt->dev_d0f0 = pci_get_device(PCI_VENDOR_ID_INTEL,
1195 e752x_devs[dev_idx].ctl_dev,
1196 NULL);
1197
1198 if (pvt->dev_d0f0 == NULL)
1199 goto fail;
1200
1201 return 0;
1202
1203 fail:
1204 pci_dev_put(pvt->dev_d0f1);
1205 return 1;
1206 }
1207
1208
1209
1210
1211
1212 static void e752x_init_sysbus_parity_mask(struct e752x_pvt *pvt)
1213 {
1214 char *cpu_id = cpu_data(0).x86_model_id;
1215 struct pci_dev *dev = pvt->dev_d0f1;
1216 int enable = 1;
1217
1218
1219 if (sysbus_parity != -1) {
1220 enable = sysbus_parity;
1221 } else if (cpu_id[0] && !strstr(cpu_id, "Xeon")) {
1222 e752x_printk(KERN_INFO, "System Bus Parity not "
1223 "supported by CPU, disabling\n");
1224 enable = 0;
1225 }
1226
1227 if (enable)
1228 pci_write_config_word(dev, E752X_SYSBUS_ERRMASK, 0x0000);
1229 else
1230 pci_write_config_word(dev, E752X_SYSBUS_ERRMASK, 0x0309);
1231 }
1232
1233 static void e752x_init_error_reporting_regs(struct e752x_pvt *pvt)
1234 {
1235 struct pci_dev *dev;
1236
1237 dev = pvt->dev_d0f1;
1238
1239 if (pvt->dev_info->err_dev == PCI_DEVICE_ID_INTEL_3100_1_ERR) {
1240 pci_write_config_dword(dev, I3100_NSI_EMASK, 0);
1241 pci_write_config_dword(dev, I3100_NSI_SMICMD, 0);
1242 } else {
1243 pci_write_config_byte(dev, E752X_HI_ERRMASK, 0x00);
1244 pci_write_config_byte(dev, E752X_HI_SMICMD, 0x00);
1245 }
1246
1247 e752x_init_sysbus_parity_mask(pvt);
1248
1249 pci_write_config_word(dev, E752X_SYSBUS_SMICMD, 0x00);
1250 pci_write_config_byte(dev, E752X_BUF_ERRMASK, 0x00);
1251 pci_write_config_byte(dev, E752X_BUF_SMICMD, 0x00);
1252 pci_write_config_byte(dev, E752X_DRAM_ERRMASK, 0x00);
1253 pci_write_config_byte(dev, E752X_DRAM_SMICMD, 0x00);
1254 }
1255
1256 static int e752x_probe1(struct pci_dev *pdev, int dev_idx)
1257 {
1258 u16 pci_data;
1259 u8 stat8;
1260 struct mem_ctl_info *mci;
1261 struct edac_mc_layer layers[2];
1262 struct e752x_pvt *pvt;
1263 u16 ddrcsr;
1264 int drc_chan;
1265 struct e752x_error_info discard;
1266
1267 edac_dbg(0, "mci\n");
1268 edac_dbg(0, "Starting Probe1\n");
1269
1270
1271
1272
1273
1274 pci_read_config_byte(pdev, E752X_DEVPRES1, &stat8);
1275 if (!force_function_unhide && !(stat8 & (1 << 5))) {
1276 printk(KERN_INFO "Contact your BIOS vendor to see if the "
1277 "E752x error registers can be safely un-hidden\n");
1278 return -ENODEV;
1279 }
1280 stat8 |= (1 << 5);
1281 pci_write_config_byte(pdev, E752X_DEVPRES1, stat8);
1282
1283 pci_read_config_word(pdev, E752X_DDRCSR, &ddrcsr);
1284
1285
1286 drc_chan = dual_channel_active(ddrcsr);
1287
1288 layers[0].type = EDAC_MC_LAYER_CHIP_SELECT;
1289 layers[0].size = E752X_NR_CSROWS;
1290 layers[0].is_virt_csrow = true;
1291 layers[1].type = EDAC_MC_LAYER_CHANNEL;
1292 layers[1].size = drc_chan + 1;
1293 layers[1].is_virt_csrow = false;
1294 mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers, sizeof(*pvt));
1295 if (mci == NULL)
1296 return -ENOMEM;
1297
1298 edac_dbg(3, "init mci\n");
1299 mci->mtype_cap = MEM_FLAG_RDDR;
1300
1301 mci->edac_ctl_cap = (dev_idx == I3100) ? EDAC_FLAG_SECDED :
1302 (EDAC_FLAG_NONE | EDAC_FLAG_SECDED | EDAC_FLAG_S4ECD4ED);
1303
1304 mci->mod_name = EDAC_MOD_STR;
1305 mci->pdev = &pdev->dev;
1306
1307 edac_dbg(3, "init pvt\n");
1308 pvt = (struct e752x_pvt *)mci->pvt_info;
1309 pvt->dev_info = &e752x_devs[dev_idx];
1310 pvt->mc_symmetric = ((ddrcsr & 0x10) != 0);
1311
1312 if (e752x_get_devs(pdev, dev_idx, pvt)) {
1313 edac_mc_free(mci);
1314 return -ENODEV;
1315 }
1316
1317 edac_dbg(3, "more mci init\n");
1318 mci->ctl_name = pvt->dev_info->ctl_name;
1319 mci->dev_name = pci_name(pdev);
1320 mci->edac_check = e752x_check;
1321 mci->ctl_page_to_phys = ctl_page_to_phys;
1322 mci->set_sdram_scrub_rate = set_sdram_scrub_rate;
1323 mci->get_sdram_scrub_rate = get_sdram_scrub_rate;
1324
1325
1326
1327
1328
1329 pci_read_config_byte(pdev, E752X_DRM, &stat8);
1330 pvt->map_type = ((stat8 & 0x0f) > ((stat8 >> 4) & 0x0f));
1331
1332 e752x_init_csrows(mci, pdev, ddrcsr);
1333 e752x_init_mem_map_table(pdev, pvt);
1334
1335 if (dev_idx == I3100)
1336 mci->edac_cap = EDAC_FLAG_SECDED;
1337 else
1338 mci->edac_cap |= EDAC_FLAG_NONE;
1339 edac_dbg(3, "tolm, remapbase, remaplimit\n");
1340
1341
1342 pci_read_config_word(pdev, E752X_TOLM, &pci_data);
1343 pvt->tolm = ((u32) pci_data) << 4;
1344 pci_read_config_word(pdev, E752X_REMAPBASE, &pci_data);
1345 pvt->remapbase = ((u32) pci_data) << 14;
1346 pci_read_config_word(pdev, E752X_REMAPLIMIT, &pci_data);
1347 pvt->remaplimit = ((u32) pci_data) << 14;
1348 e752x_printk(KERN_INFO,
1349 "tolm = %x, remapbase = %x, remaplimit = %x\n",
1350 pvt->tolm, pvt->remapbase, pvt->remaplimit);
1351
1352
1353
1354
1355 if (edac_mc_add_mc(mci)) {
1356 edac_dbg(3, "failed edac_mc_add_mc()\n");
1357 goto fail;
1358 }
1359
1360 e752x_init_error_reporting_regs(pvt);
1361 e752x_get_error_info(mci, &discard);
1362
1363
1364 e752x_pci = edac_pci_create_generic_ctl(&pdev->dev, EDAC_MOD_STR);
1365 if (!e752x_pci) {
1366 printk(KERN_WARNING
1367 "%s(): Unable to create PCI control\n", __func__);
1368 printk(KERN_WARNING
1369 "%s(): PCI error report via EDAC not setup\n",
1370 __func__);
1371 }
1372
1373
1374 edac_dbg(3, "success\n");
1375 return 0;
1376
1377 fail:
1378 pci_dev_put(pvt->dev_d0f0);
1379 pci_dev_put(pvt->dev_d0f1);
1380 edac_mc_free(mci);
1381
1382 return -ENODEV;
1383 }
1384
1385
1386 static int e752x_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1387 {
1388 edac_dbg(0, "\n");
1389
1390
1391 if (pci_enable_device(pdev) < 0)
1392 return -EIO;
1393
1394 return e752x_probe1(pdev, ent->driver_data);
1395 }
1396
1397 static void e752x_remove_one(struct pci_dev *pdev)
1398 {
1399 struct mem_ctl_info *mci;
1400 struct e752x_pvt *pvt;
1401
1402 edac_dbg(0, "\n");
1403
1404 if (e752x_pci)
1405 edac_pci_release_generic_ctl(e752x_pci);
1406
1407 if ((mci = edac_mc_del_mc(&pdev->dev)) == NULL)
1408 return;
1409
1410 pvt = (struct e752x_pvt *)mci->pvt_info;
1411 pci_dev_put(pvt->dev_d0f0);
1412 pci_dev_put(pvt->dev_d0f1);
1413 edac_mc_free(mci);
1414 }
1415
1416 static const struct pci_device_id e752x_pci_tbl[] = {
1417 {
1418 PCI_VEND_DEV(INTEL, 7520_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1419 E7520},
1420 {
1421 PCI_VEND_DEV(INTEL, 7525_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1422 E7525},
1423 {
1424 PCI_VEND_DEV(INTEL, 7320_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1425 E7320},
1426 {
1427 PCI_VEND_DEV(INTEL, 3100_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1428 I3100},
1429 {
1430 0,
1431 }
1432 };
1433
1434 MODULE_DEVICE_TABLE(pci, e752x_pci_tbl);
1435
1436 static struct pci_driver e752x_driver = {
1437 .name = EDAC_MOD_STR,
1438 .probe = e752x_init_one,
1439 .remove = e752x_remove_one,
1440 .id_table = e752x_pci_tbl,
1441 };
1442
1443 static int __init e752x_init(void)
1444 {
1445 int pci_rc;
1446
1447 edac_dbg(3, "\n");
1448
1449
1450 opstate_init();
1451
1452 pci_rc = pci_register_driver(&e752x_driver);
1453 return (pci_rc < 0) ? pci_rc : 0;
1454 }
1455
1456 static void __exit e752x_exit(void)
1457 {
1458 edac_dbg(3, "\n");
1459 pci_unregister_driver(&e752x_driver);
1460 }
1461
1462 module_init(e752x_init);
1463 module_exit(e752x_exit);
1464
1465 MODULE_LICENSE("GPL");
1466 MODULE_AUTHOR("Linux Networx (http://lnxi.com) Tom Zimmerman\n");
1467 MODULE_DESCRIPTION("MC support for Intel e752x/3100 memory controllers");
1468
1469 module_param(force_function_unhide, int, 0444);
1470 MODULE_PARM_DESC(force_function_unhide, "if BIOS sets Dev0:Fun1 up as hidden:"
1471 " 1=force unhide and hope BIOS doesn't fight driver for "
1472 "Dev0:Fun1 access");
1473
1474 module_param(edac_op_state, int, 0444);
1475 MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll,1=NMI");
1476
1477 module_param(sysbus_parity, int, 0444);
1478 MODULE_PARM_DESC(sysbus_parity, "0=disable system bus parity checking,"
1479 " 1=enable system bus parity checking, default=auto-detect");
1480 module_param(report_non_memory_errors, int, 0644);
1481 MODULE_PARM_DESC(report_non_memory_errors, "0=disable non-memory error "
1482 "reporting, 1=enable non-memory error reporting");