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sched: Fix SCHED_MC regression caused by change in sched cpu_power
[linux-2.6/mini2440.git] / drivers / edac / e752x_edac.c
blobd205d493a68aa60f5256918ca91b1e43badcf65e
1 /*
2 * Intel e752x Memory Controller kernel module
3 * (C) 2004 Linux Networx (http://lnxi.com)
4 * This file may be distributed under the terms of the
5 * GNU General Public License.
6 *
7 * See "enum e752x_chips" below for supported chipsets
8 *
9 * Written by Tom Zimmerman
10 *
11 * Contributors:
12 * Thayne Harbaugh at realmsys.com (?)
13 * Wang Zhenyu at intel.com
14 * Dave Jiang at mvista.com
15 *
16 * $Id: edac_e752x.c,v 1.5.2.11 2005/10/05 00:43:44 dsp_llnl Exp $
17 *
18 */
19
20 #include <linux/module.h>
21 #include <linux/init.h>
22 #include <linux/pci.h>
23 #include <linux/pci_ids.h>
24 #include <linux/slab.h>
25 #include <linux/edac.h>
26 #include "edac_core.h"
27
28 #define E752X_REVISION " Ver: 2.0.2 " __DATE__
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 /* PCI_DEVICE_ID_INTEL_7520_0 */
46
47 #ifndef PCI_DEVICE_ID_INTEL_7520_1_ERR
48 #define PCI_DEVICE_ID_INTEL_7520_1_ERR 0x3591
49 #endif /* PCI_DEVICE_ID_INTEL_7520_1_ERR */
50
51 #ifndef PCI_DEVICE_ID_INTEL_7525_0
52 #define PCI_DEVICE_ID_INTEL_7525_0 0x359E
53 #endif /* PCI_DEVICE_ID_INTEL_7525_0 */
54
55 #ifndef PCI_DEVICE_ID_INTEL_7525_1_ERR
56 #define PCI_DEVICE_ID_INTEL_7525_1_ERR 0x3593
57 #endif /* PCI_DEVICE_ID_INTEL_7525_1_ERR */
58
59 #ifndef PCI_DEVICE_ID_INTEL_7320_0
60 #define PCI_DEVICE_ID_INTEL_7320_0 0x3592
61 #endif /* PCI_DEVICE_ID_INTEL_7320_0 */
62
63 #ifndef PCI_DEVICE_ID_INTEL_7320_1_ERR
64 #define PCI_DEVICE_ID_INTEL_7320_1_ERR 0x3593
65 #endif /* PCI_DEVICE_ID_INTEL_7320_1_ERR */
66
67 #ifndef PCI_DEVICE_ID_INTEL_3100_0
68 #define PCI_DEVICE_ID_INTEL_3100_0 0x35B0
69 #endif /* PCI_DEVICE_ID_INTEL_3100_0 */
70
71 #ifndef PCI_DEVICE_ID_INTEL_3100_1_ERR
72 #define PCI_DEVICE_ID_INTEL_3100_1_ERR 0x35B1
73 #endif /* PCI_DEVICE_ID_INTEL_3100_1_ERR */
74
75 #define E752X_NR_CSROWS 8 /* number of csrows */
76
77 /* E752X register addresses - device 0 function 0 */
78 #define E752X_DRB 0x60 /* DRAM row boundary register (8b) */
79 #define E752X_DRA 0x70 /* DRAM row attribute register (8b) */
80 /*
81 * 31:30 Device width row 7
82 * 01=x8 10=x4 11=x8 DDR2
83 * 27:26 Device width row 6
84 * 23:22 Device width row 5
85 * 19:20 Device width row 4
86 * 15:14 Device width row 3
87 * 11:10 Device width row 2
88 * 7:6 Device width row 1
89 * 3:2 Device width row 0
90 */
91 #define E752X_DRC 0x7C /* DRAM controller mode reg (32b) */
92 /* FIXME:IS THIS RIGHT? */
93 /*
94 * 22 Number channels 0=1,1=2
95 * 19:18 DRB Granularity 32/64MB
96 */
97 #define E752X_DRM 0x80 /* Dimm mapping register */
98 #define E752X_DDRCSR 0x9A /* DDR control and status reg (16b) */
99 /*
100 * 14:12 1 single A, 2 single B, 3 dual
101 */
102 #define E752X_TOLM 0xC4 /* DRAM top of low memory reg (16b) */
103 #define E752X_REMAPBASE 0xC6 /* DRAM remap base address reg (16b) */
104 #define E752X_REMAPLIMIT 0xC8 /* DRAM remap limit address reg (16b) */
105 #define E752X_REMAPOFFSET 0xCA /* DRAM remap limit offset reg (16b) */
106
107 /* E752X register addresses - device 0 function 1 */
108 #define E752X_FERR_GLOBAL 0x40 /* Global first error register (32b) */
109 #define E752X_NERR_GLOBAL 0x44 /* Global next error register (32b) */
110 #define E752X_HI_FERR 0x50 /* Hub interface first error reg (8b) */
111 #define E752X_HI_NERR 0x52 /* Hub interface next error reg (8b) */
112 #define E752X_HI_ERRMASK 0x54 /* Hub interface error mask reg (8b) */
113 #define E752X_HI_SMICMD 0x5A /* Hub interface SMI command reg (8b) */
114 #define E752X_SYSBUS_FERR 0x60 /* System buss first error reg (16b) */
115 #define E752X_SYSBUS_NERR 0x62 /* System buss next error reg (16b) */
116 #define E752X_SYSBUS_ERRMASK 0x64 /* System buss error mask reg (16b) */
117 #define E752X_SYSBUS_SMICMD 0x6A /* System buss SMI command reg (16b) */
118 #define E752X_BUF_FERR 0x70 /* Memory buffer first error reg (8b) */
119 #define E752X_BUF_NERR 0x72 /* Memory buffer next error reg (8b) */
120 #define E752X_BUF_ERRMASK 0x74 /* Memory buffer error mask reg (8b) */
121 #define E752X_BUF_SMICMD 0x7A /* Memory buffer SMI cmd reg (8b) */
122 #define E752X_DRAM_FERR 0x80 /* DRAM first error register (16b) */
123 #define E752X_DRAM_NERR 0x82 /* DRAM next error register (16b) */
124 #define E752X_DRAM_ERRMASK 0x84 /* DRAM error mask register (8b) */
125 #define E752X_DRAM_SMICMD 0x8A /* DRAM SMI command register (8b) */
126 #define E752X_DRAM_RETR_ADD 0xAC /* DRAM Retry address register (32b) */
127 #define E752X_DRAM_SEC1_ADD 0xA0 /* DRAM first correctable memory */
128 /* error address register (32b) */
129 /*
130 * 31 Reserved
131 * 30:2 CE address (64 byte block 34:6
132 * 1 Reserved
133 * 0 HiLoCS
134 */
135 #define E752X_DRAM_SEC2_ADD 0xC8 /* DRAM first correctable memory */
136 /* error address register (32b) */
137 /*
138 * 31 Reserved
139 * 30:2 CE address (64 byte block 34:6)
140 * 1 Reserved
141 * 0 HiLoCS
142 */
143 #define E752X_DRAM_DED_ADD 0xA4 /* DRAM first uncorrectable memory */
144 /* error address register (32b) */
145 /*
146 * 31 Reserved
147 * 30:2 CE address (64 byte block 34:6)
148 * 1 Reserved
149 * 0 HiLoCS
150 */
151 #define E752X_DRAM_SCRB_ADD 0xA8 /* DRAM 1st uncorrectable scrub mem */
152 /* error address register (32b) */
153 /*
154 * 31 Reserved
155 * 30:2 CE address (64 byte block 34:6
156 * 1 Reserved
157 * 0 HiLoCS
158 */
159 #define E752X_DRAM_SEC1_SYNDROME 0xC4 /* DRAM first correctable memory */
160 /* error syndrome register (16b) */
161 #define E752X_DRAM_SEC2_SYNDROME 0xC6 /* DRAM second correctable memory */
162 /* error syndrome register (16b) */
163 #define E752X_DEVPRES1 0xF4 /* Device Present 1 register (8b) */
164
165 /* 3100 IMCH specific register addresses - device 0 function 1 */
166 #define I3100_NSI_FERR 0x48 /* NSI first error reg (32b) */
167 #define I3100_NSI_NERR 0x4C /* NSI next error reg (32b) */
168 #define I3100_NSI_SMICMD 0x54 /* NSI SMI command register (32b) */
169 #define I3100_NSI_EMASK 0x90 /* NSI error mask register (32b) */
170
171 /* ICH5R register addresses - device 30 function 0 */
172 #define ICH5R_PCI_STAT 0x06 /* PCI status register (16b) */
173 #define ICH5R_PCI_2ND_STAT 0x1E /* PCI status secondary reg (16b) */
174 #define ICH5R_PCI_BRIDGE_CTL 0x3E /* PCI bridge control register (16b) */
175
176 enum e752x_chips {
177 E7520 = 0,
178 E7525 = 1,
179 E7320 = 2,
180 I3100 = 3
181 };
182
183 struct e752x_pvt {
184 struct pci_dev *bridge_ck;
185 struct pci_dev *dev_d0f0;
186 struct pci_dev *dev_d0f1;
187 u32 tolm;
188 u32 remapbase;
189 u32 remaplimit;
190 int mc_symmetric;
191 u8 map[8];
192 int map_type;
193 const struct e752x_dev_info *dev_info;
194 };
195
196 struct e752x_dev_info {
197 u16 err_dev;
198 u16 ctl_dev;
199 const char *ctl_name;
200 };
201
202 struct e752x_error_info {
203 u32 ferr_global;
204 u32 nerr_global;
205 u32 nsi_ferr; /* 3100 only */
206 u32 nsi_nerr; /* 3100 only */
207 u8 hi_ferr; /* all but 3100 */
208 u8 hi_nerr; /* all but 3100 */
209 u16 sysbus_ferr;
210 u16 sysbus_nerr;
211 u8 buf_ferr;
212 u8 buf_nerr;
213 u16 dram_ferr;
214 u16 dram_nerr;
215 u32 dram_sec1_add;
216 u32 dram_sec2_add;
217 u16 dram_sec1_syndrome;
218 u16 dram_sec2_syndrome;
219 u32 dram_ded_add;
220 u32 dram_scrb_add;
221 u32 dram_retr_add;
222 };
223
224 static const struct e752x_dev_info e752x_devs[] = {
225 [E7520] = {
226 .err_dev = PCI_DEVICE_ID_INTEL_7520_1_ERR,
227 .ctl_dev = PCI_DEVICE_ID_INTEL_7520_0,
228 .ctl_name = "E7520"},
229 [E7525] = {
230 .err_dev = PCI_DEVICE_ID_INTEL_7525_1_ERR,
231 .ctl_dev = PCI_DEVICE_ID_INTEL_7525_0,
232 .ctl_name = "E7525"},
233 [E7320] = {
234 .err_dev = PCI_DEVICE_ID_INTEL_7320_1_ERR,
235 .ctl_dev = PCI_DEVICE_ID_INTEL_7320_0,
236 .ctl_name = "E7320"},
237 [I3100] = {
238 .err_dev = PCI_DEVICE_ID_INTEL_3100_1_ERR,
239 .ctl_dev = PCI_DEVICE_ID_INTEL_3100_0,
240 .ctl_name = "3100"},
241 };
242
243 static unsigned long ctl_page_to_phys(struct mem_ctl_info *mci,
244 unsigned long page)
245 {
246 u32 remap;
247 struct e752x_pvt *pvt = (struct e752x_pvt *)mci->pvt_info;
248
249 debugf3("%s()\n", __func__);
250
251 if (page < pvt->tolm)
252 return page;
253
254 if ((page >= 0x100000) && (page < pvt->remapbase))
255 return page;
256
257 remap = (page - pvt->tolm) + pvt->remapbase;
258
259 if (remap < pvt->remaplimit)
260 return remap;
261
262 e752x_printk(KERN_ERR, "Invalid page %lx - out of range\n", page);
263 return pvt->tolm - 1;
264 }
265
266 static void do_process_ce(struct mem_ctl_info *mci, u16 error_one,
267 u32 sec1_add, u16 sec1_syndrome)
268 {
269 u32 page;
270 int row;
271 int channel;
272 int i;
273 struct e752x_pvt *pvt = (struct e752x_pvt *)mci->pvt_info;
274
275 debugf3("%s()\n", __func__);
276
277 /* convert the addr to 4k page */
278 page = sec1_add >> (PAGE_SHIFT - 4);
279
280 /* FIXME - check for -1 */
281 if (pvt->mc_symmetric) {
282 /* chip select are bits 14 & 13 */
283 row = ((page >> 1) & 3);
284 e752x_printk(KERN_WARNING,
285 "Test row %d Table %d %d %d %d %d %d %d %d\n", row,
286 pvt->map[0], pvt->map[1], pvt->map[2], pvt->map[3],
287 pvt->map[4], pvt->map[5], pvt->map[6],
288 pvt->map[7]);
289
290 /* test for channel remapping */
291 for (i = 0; i < 8; i++) {
292 if (pvt->map[i] == row)
293 break;
294 }
295
296 e752x_printk(KERN_WARNING, "Test computed row %d\n", i);
297
298 if (i < 8)
299 row = i;
300 else
301 e752x_mc_printk(mci, KERN_WARNING,
302 "row %d not found in remap table\n",
303 row);
304 } else
305 row = edac_mc_find_csrow_by_page(mci, page);
306
307 /* 0 = channel A, 1 = channel B */
308 channel = !(error_one & 1);
309
310 /* e752x mc reads 34:6 of the DRAM linear address */
311 edac_mc_handle_ce(mci, page, offset_in_page(sec1_add << 4),
312 sec1_syndrome, row, channel, "e752x CE");
313 }
314
315 static inline void process_ce(struct mem_ctl_info *mci, u16 error_one,
316 u32 sec1_add, u16 sec1_syndrome, int *error_found,
317 int handle_error)
318 {
319 *error_found = 1;
320
321 if (handle_error)
322 do_process_ce(mci, error_one, sec1_add, sec1_syndrome);
323 }
324
325 static void do_process_ue(struct mem_ctl_info *mci, u16 error_one,
326 u32 ded_add, u32 scrb_add)
327 {
328 u32 error_2b, block_page;
329 int row;
330 struct e752x_pvt *pvt = (struct e752x_pvt *)mci->pvt_info;
331
332 debugf3("%s()\n", __func__);
333
334 if (error_one & 0x0202) {
335 error_2b = ded_add;
336
337 /* convert to 4k address */
338 block_page = error_2b >> (PAGE_SHIFT - 4);
339
340 row = pvt->mc_symmetric ?
341 /* chip select are bits 14 & 13 */
342 ((block_page >> 1) & 3) :
343 edac_mc_find_csrow_by_page(mci, block_page);
344
345 /* e752x mc reads 34:6 of the DRAM linear address */
346 edac_mc_handle_ue(mci, block_page,
347 offset_in_page(error_2b << 4),
348 row, "e752x UE from Read");
349 }
350 if (error_one & 0x0404) {
351 error_2b = scrb_add;
352
353 /* convert to 4k address */
354 block_page = error_2b >> (PAGE_SHIFT - 4);
355
356 row = pvt->mc_symmetric ?
357 /* chip select are bits 14 & 13 */
358 ((block_page >> 1) & 3) :
359 edac_mc_find_csrow_by_page(mci, block_page);
360
361 /* e752x mc reads 34:6 of the DRAM linear address */
362 edac_mc_handle_ue(mci, block_page,
363 offset_in_page(error_2b << 4),
364 row, "e752x UE from Scruber");
365 }
366 }
367
368 static inline void process_ue(struct mem_ctl_info *mci, u16 error_one,
369 u32 ded_add, u32 scrb_add, int *error_found,
370 int handle_error)
371 {
372 *error_found = 1;
373
374 if (handle_error)
375 do_process_ue(mci, error_one, ded_add, scrb_add);
376 }
377
378 static inline void process_ue_no_info_wr(struct mem_ctl_info *mci,
379 int *error_found, int handle_error)
380 {
381 *error_found = 1;
382
383 if (!handle_error)
384 return;
385
386 debugf3("%s()\n", __func__);
387 edac_mc_handle_ue_no_info(mci, "e752x UE log memory write");
388 }
389
390 static void do_process_ded_retry(struct mem_ctl_info *mci, u16 error,
391 u32 retry_add)
392 {
393 u32 error_1b, page;
394 int row;
395 struct e752x_pvt *pvt = (struct e752x_pvt *)mci->pvt_info;
396
397 error_1b = retry_add;
398 page = error_1b >> (PAGE_SHIFT - 4); /* convert the addr to 4k page */
399
400 /* chip select are bits 14 & 13 */
401 row = pvt->mc_symmetric ? ((page >> 1) & 3) :
402 edac_mc_find_csrow_by_page(mci, page);
403
404 e752x_mc_printk(mci, KERN_WARNING,
405 "CE page 0x%lx, row %d : Memory read retry\n",
406 (long unsigned int)page, row);
407 }
408
409 static inline void process_ded_retry(struct mem_ctl_info *mci, u16 error,
410 u32 retry_add, int *error_found,
411 int handle_error)
412 {
413 *error_found = 1;
414
415 if (handle_error)
416 do_process_ded_retry(mci, error, retry_add);
417 }
418
419 static inline void process_threshold_ce(struct mem_ctl_info *mci, u16 error,
420 int *error_found, int handle_error)
421 {
422 *error_found = 1;
423
424 if (handle_error)
425 e752x_mc_printk(mci, KERN_WARNING, "Memory threshold CE\n");
426 }
427
428 static char *global_message[11] = {
429 "PCI Express C1",
430 "PCI Express C",
431 "PCI Express B1",
432 "PCI Express B",
433 "PCI Express A1",
434 "PCI Express A",
435 "DMA Controller",
436 "HUB or NS Interface",
437 "System Bus",
438 "DRAM Controller", /* 9th entry */
439 "Internal Buffer"
440 };
441
442 #define DRAM_ENTRY 9
443
444 static char *fatal_message[2] = { "Non-Fatal ", "Fatal " };
445
446 static void do_global_error(int fatal, u32 errors)
447 {
448 int i;
449
450 for (i = 0; i < 11; i++) {
451 if (errors & (1 << i)) {
452 /* If the error is from DRAM Controller OR
453 * we are to report ALL errors, then
454 * report the error
455 */
456 if ((i == DRAM_ENTRY) || report_non_memory_errors)
457 e752x_printk(KERN_WARNING, "%sError %s\n",
458 fatal_message[fatal],
459 global_message[i]);
460 }
461 }
462 }
463
464 static inline void global_error(int fatal, u32 errors, int *error_found,
465 int handle_error)
466 {
467 *error_found = 1;
468
469 if (handle_error)
470 do_global_error(fatal, errors);
471 }
472
473 static char *hub_message[7] = {
474 "HI Address or Command Parity", "HI Illegal Access",
475 "HI Internal Parity", "Out of Range Access",
476 "HI Data Parity", "Enhanced Config Access",
477 "Hub Interface Target Abort"
478 };
479
480 static void do_hub_error(int fatal, u8 errors)
481 {
482 int i;
483
484 for (i = 0; i < 7; i++) {
485 if (errors & (1 << i))
486 e752x_printk(KERN_WARNING, "%sError %s\n",
487 fatal_message[fatal], hub_message[i]);
488 }
489 }
490
491 static inline void hub_error(int fatal, u8 errors, int *error_found,
492 int handle_error)
493 {
494 *error_found = 1;
495
496 if (handle_error)
497 do_hub_error(fatal, errors);
498 }
499
500 #define NSI_FATAL_MASK 0x0c080081
501 #define NSI_NON_FATAL_MASK 0x23a0ba64
502 #define NSI_ERR_MASK (NSI_FATAL_MASK | NSI_NON_FATAL_MASK)
503
504 static char *nsi_message[30] = {
505 "NSI Link Down", /* NSI_FERR/NSI_NERR bit 0, fatal error */
506 "", /* reserved */
507 "NSI Parity Error", /* bit 2, non-fatal */
508 "", /* reserved */
509 "", /* reserved */
510 "Correctable Error Message", /* bit 5, non-fatal */
511 "Non-Fatal Error Message", /* bit 6, non-fatal */
512 "Fatal Error Message", /* bit 7, fatal */
513 "", /* reserved */
514 "Receiver Error", /* bit 9, non-fatal */
515 "", /* reserved */
516 "Bad TLP", /* bit 11, non-fatal */
517 "Bad DLLP", /* bit 12, non-fatal */
518 "REPLAY_NUM Rollover", /* bit 13, non-fatal */
519 "", /* reserved */
520 "Replay Timer Timeout", /* bit 15, non-fatal */
521 "", /* reserved */
522 "", /* reserved */
523 "", /* reserved */
524 "Data Link Protocol Error", /* bit 19, fatal */
525 "", /* reserved */
526 "Poisoned TLP", /* bit 21, non-fatal */
527 "", /* reserved */
528 "Completion Timeout", /* bit 23, non-fatal */
529 "Completer Abort", /* bit 24, non-fatal */
530 "Unexpected Completion", /* bit 25, non-fatal */
531 "Receiver Overflow", /* bit 26, fatal */
532 "Malformed TLP", /* bit 27, fatal */
533 "", /* reserved */
534 "Unsupported Request" /* bit 29, non-fatal */
535 };
536
537 static void do_nsi_error(int fatal, u32 errors)
538 {
539 int i;
540
541 for (i = 0; i < 30; i++) {
542 if (errors & (1 << i))
543 printk(KERN_WARNING "%sError %s\n",
544 fatal_message[fatal], nsi_message[i]);
545 }
546 }
547
548 static inline void nsi_error(int fatal, u32 errors, int *error_found,
549 int handle_error)
550 {
551 *error_found = 1;
552
553 if (handle_error)
554 do_nsi_error(fatal, errors);
555 }
556
557 static char *membuf_message[4] = {
558 "Internal PMWB to DRAM parity",
559 "Internal PMWB to System Bus Parity",
560 "Internal System Bus or IO to PMWB Parity",
561 "Internal DRAM to PMWB Parity"
562 };
563
564 static void do_membuf_error(u8 errors)
565 {
566 int i;
567
568 for (i = 0; i < 4; i++) {
569 if (errors & (1 << i))
570 e752x_printk(KERN_WARNING, "Non-Fatal Error %s\n",
571 membuf_message[i]);
572 }
573 }
574
575 static inline void membuf_error(u8 errors, int *error_found, int handle_error)
576 {
577 *error_found = 1;
578
579 if (handle_error)
580 do_membuf_error(errors);
581 }
582
583 static char *sysbus_message[10] = {
584 "Addr or Request Parity",
585 "Data Strobe Glitch",
586 "Addr Strobe Glitch",
587 "Data Parity",
588 "Addr Above TOM",
589 "Non DRAM Lock Error",
590 "MCERR", "BINIT",
591 "Memory Parity",
592 "IO Subsystem Parity"
593 };
594
595 static void do_sysbus_error(int fatal, u32 errors)
596 {
597 int i;
598
599 for (i = 0; i < 10; i++) {
600 if (errors & (1 << i))
601 e752x_printk(KERN_WARNING, "%sError System Bus %s\n",
602 fatal_message[fatal], sysbus_message[i]);
603 }
604 }
605
606 static inline void sysbus_error(int fatal, u32 errors, int *error_found,
607 int handle_error)
608 {
609 *error_found = 1;
610
611 if (handle_error)
612 do_sysbus_error(fatal, errors);
613 }
614
615 static void e752x_check_hub_interface(struct e752x_error_info *info,
616 int *error_found, int handle_error)
617 {
618 u8 stat8;
619
620 //pci_read_config_byte(dev,E752X_HI_FERR,&stat8);
621
622 stat8 = info->hi_ferr;
623
624 if (stat8 & 0x7f) { /* Error, so process */
625 stat8 &= 0x7f;
626
627 if (stat8 & 0x2b)
628 hub_error(1, stat8 & 0x2b, error_found, handle_error);
629
630 if (stat8 & 0x54)
631 hub_error(0, stat8 & 0x54, error_found, handle_error);
632 }
633 //pci_read_config_byte(dev,E752X_HI_NERR,&stat8);
634
635 stat8 = info->hi_nerr;
636
637 if (stat8 & 0x7f) { /* Error, so process */
638 stat8 &= 0x7f;
639
640 if (stat8 & 0x2b)
641 hub_error(1, stat8 & 0x2b, error_found, handle_error);
642
643 if (stat8 & 0x54)
644 hub_error(0, stat8 & 0x54, error_found, handle_error);
645 }
646 }
647
648 static void e752x_check_ns_interface(struct e752x_error_info *info,
649 int *error_found, int handle_error)
650 {
651 u32 stat32;
652
653 stat32 = info->nsi_ferr;
654 if (stat32 & NSI_ERR_MASK) { /* Error, so process */
655 if (stat32 & NSI_FATAL_MASK) /* check for fatal errors */
656 nsi_error(1, stat32 & NSI_FATAL_MASK, error_found,
657 handle_error);
658 if (stat32 & NSI_NON_FATAL_MASK) /* check for non-fatal ones */
659 nsi_error(0, stat32 & NSI_NON_FATAL_MASK, error_found,
660 handle_error);
661 }
662 stat32 = info->nsi_nerr;
663 if (stat32 & NSI_ERR_MASK) {
664 if (stat32 & NSI_FATAL_MASK)
665 nsi_error(1, stat32 & NSI_FATAL_MASK, error_found,
666 handle_error);
667 if (stat32 & NSI_NON_FATAL_MASK)
668 nsi_error(0, stat32 & NSI_NON_FATAL_MASK, error_found,
669 handle_error);
670 }
671 }
672
673 static void e752x_check_sysbus(struct e752x_error_info *info,
674 int *error_found, int handle_error)
675 {
676 u32 stat32, error32;
677
678 //pci_read_config_dword(dev,E752X_SYSBUS_FERR,&stat32);
679 stat32 = info->sysbus_ferr + (info->sysbus_nerr << 16);
680
681 if (stat32 == 0)
682 return; /* no errors */
683
684 error32 = (stat32 >> 16) & 0x3ff;
685 stat32 = stat32 & 0x3ff;
686
687 if (stat32 & 0x087)
688 sysbus_error(1, stat32 & 0x087, error_found, handle_error);
689
690 if (stat32 & 0x378)
691 sysbus_error(0, stat32 & 0x378, error_found, handle_error);
692
693 if (error32 & 0x087)
694 sysbus_error(1, error32 & 0x087, error_found, handle_error);
695
696 if (error32 & 0x378)
697 sysbus_error(0, error32 & 0x378, error_found, handle_error);
698 }
699
700 static void e752x_check_membuf(struct e752x_error_info *info,
701 int *error_found, int handle_error)
702 {
703 u8 stat8;
704
705 stat8 = info->buf_ferr;
706
707 if (stat8 & 0x0f) { /* Error, so process */
708 stat8 &= 0x0f;
709 membuf_error(stat8, error_found, handle_error);
710 }
711
712 stat8 = info->buf_nerr;
713
714 if (stat8 & 0x0f) { /* Error, so process */
715 stat8 &= 0x0f;
716 membuf_error(stat8, error_found, handle_error);
717 }
718 }
719
720 static void e752x_check_dram(struct mem_ctl_info *mci,
721 struct e752x_error_info *info, int *error_found,
722 int handle_error)
723 {
724 u16 error_one, error_next;
725
726 error_one = info->dram_ferr;
727 error_next = info->dram_nerr;
728
729 /* decode and report errors */
730 if (error_one & 0x0101) /* check first error correctable */
731 process_ce(mci, error_one, info->dram_sec1_add,
732 info->dram_sec1_syndrome, error_found, handle_error);
733
734 if (error_next & 0x0101) /* check next error correctable */
735 process_ce(mci, error_next, info->dram_sec2_add,
736 info->dram_sec2_syndrome, error_found, handle_error);
737
738 if (error_one & 0x4040)
739 process_ue_no_info_wr(mci, error_found, handle_error);
740
741 if (error_next & 0x4040)
742 process_ue_no_info_wr(mci, error_found, handle_error);
743
744 if (error_one & 0x2020)
745 process_ded_retry(mci, error_one, info->dram_retr_add,
746 error_found, handle_error);
747
748 if (error_next & 0x2020)
749 process_ded_retry(mci, error_next, info->dram_retr_add,
750 error_found, handle_error);
751
752 if (error_one & 0x0808)
753 process_threshold_ce(mci, error_one, error_found, handle_error);
754
755 if (error_next & 0x0808)
756 process_threshold_ce(mci, error_next, error_found,
757 handle_error);
758
759 if (error_one & 0x0606)
760 process_ue(mci, error_one, info->dram_ded_add,
761 info->dram_scrb_add, error_found, handle_error);
762
763 if (error_next & 0x0606)
764 process_ue(mci, error_next, info->dram_ded_add,
765 info->dram_scrb_add, error_found, handle_error);
766 }
767
768 static void e752x_get_error_info(struct mem_ctl_info *mci,
769 struct e752x_error_info *info)
770 {
771 struct pci_dev *dev;
772 struct e752x_pvt *pvt;
773
774 memset(info, 0, sizeof(*info));
775 pvt = (struct e752x_pvt *)mci->pvt_info;
776 dev = pvt->dev_d0f1;
777 pci_read_config_dword(dev, E752X_FERR_GLOBAL, &info->ferr_global);
778
779 if (info->ferr_global) {
780 if (pvt->dev_info->err_dev == PCI_DEVICE_ID_INTEL_3100_1_ERR) {
781 pci_read_config_dword(dev, I3100_NSI_FERR,
782 &info->nsi_ferr);
783 info->hi_ferr = 0;
784 } else {
785 pci_read_config_byte(dev, E752X_HI_FERR,
786 &info->hi_ferr);
787 info->nsi_ferr = 0;
788 }
789 pci_read_config_word(dev, E752X_SYSBUS_FERR,
790 &info->sysbus_ferr);
791 pci_read_config_byte(dev, E752X_BUF_FERR, &info->buf_ferr);
792 pci_read_config_word(dev, E752X_DRAM_FERR, &info->dram_ferr);
793 pci_read_config_dword(dev, E752X_DRAM_SEC1_ADD,
794 &info->dram_sec1_add);
795 pci_read_config_word(dev, E752X_DRAM_SEC1_SYNDROME,
796 &info->dram_sec1_syndrome);
797 pci_read_config_dword(dev, E752X_DRAM_DED_ADD,
798 &info->dram_ded_add);
799 pci_read_config_dword(dev, E752X_DRAM_SCRB_ADD,
800 &info->dram_scrb_add);
801 pci_read_config_dword(dev, E752X_DRAM_RETR_ADD,
802 &info->dram_retr_add);
803
804 /* ignore the reserved bits just in case */
805 if (info->hi_ferr & 0x7f)
806 pci_write_config_byte(dev, E752X_HI_FERR,
807 info->hi_ferr);
808
809 if (info->nsi_ferr & NSI_ERR_MASK)
810 pci_write_config_dword(dev, I3100_NSI_FERR,
811 info->nsi_ferr);
812
813 if (info->sysbus_ferr)
814 pci_write_config_word(dev, E752X_SYSBUS_FERR,
815 info->sysbus_ferr);
816
817 if (info->buf_ferr & 0x0f)
818 pci_write_config_byte(dev, E752X_BUF_FERR,
819 info->buf_ferr);
820
821 if (info->dram_ferr)
822 pci_write_bits16(pvt->bridge_ck, E752X_DRAM_FERR,
823 info->dram_ferr, info->dram_ferr);
824
825 pci_write_config_dword(dev, E752X_FERR_GLOBAL,
826 info->ferr_global);
827 }
828
829 pci_read_config_dword(dev, E752X_NERR_GLOBAL, &info->nerr_global);
830
831 if (info->nerr_global) {
832 if (pvt->dev_info->err_dev == PCI_DEVICE_ID_INTEL_3100_1_ERR) {
833 pci_read_config_dword(dev, I3100_NSI_NERR,
834 &info->nsi_nerr);
835 info->hi_nerr = 0;
836 } else {
837 pci_read_config_byte(dev, E752X_HI_NERR,
838 &info->hi_nerr);
839 info->nsi_nerr = 0;
840 }
841 pci_read_config_word(dev, E752X_SYSBUS_NERR,
842 &info->sysbus_nerr);
843 pci_read_config_byte(dev, E752X_BUF_NERR, &info->buf_nerr);
844 pci_read_config_word(dev, E752X_DRAM_NERR, &info->dram_nerr);
845 pci_read_config_dword(dev, E752X_DRAM_SEC2_ADD,
846 &info->dram_sec2_add);
847 pci_read_config_word(dev, E752X_DRAM_SEC2_SYNDROME,
848 &info->dram_sec2_syndrome);
849
850 if (info->hi_nerr & 0x7f)
851 pci_write_config_byte(dev, E752X_HI_NERR,
852 info->hi_nerr);
853
854 if (info->nsi_nerr & NSI_ERR_MASK)
855 pci_write_config_dword(dev, I3100_NSI_NERR,
856 info->nsi_nerr);
857
858 if (info->sysbus_nerr)
859 pci_write_config_word(dev, E752X_SYSBUS_NERR,
860 info->sysbus_nerr);
861
862 if (info->buf_nerr & 0x0f)
863 pci_write_config_byte(dev, E752X_BUF_NERR,
864 info->buf_nerr);
865
866 if (info->dram_nerr)
867 pci_write_bits16(pvt->bridge_ck, E752X_DRAM_NERR,
868 info->dram_nerr, info->dram_nerr);
869
870 pci_write_config_dword(dev, E752X_NERR_GLOBAL,
871 info->nerr_global);
872 }
873 }
874
875 static int e752x_process_error_info(struct mem_ctl_info *mci,
876 struct e752x_error_info *info,
877 int handle_errors)
878 {
879 u32 error32, stat32;
880 int error_found;
881
882 error_found = 0;
883 error32 = (info->ferr_global >> 18) & 0x3ff;
884 stat32 = (info->ferr_global >> 4) & 0x7ff;
885
886 if (error32)
887 global_error(1, error32, &error_found, handle_errors);
888
889 if (stat32)
890 global_error(0, stat32, &error_found, handle_errors);
891
892 error32 = (info->nerr_global >> 18) & 0x3ff;
893 stat32 = (info->nerr_global >> 4) & 0x7ff;
894
895 if (error32)
896 global_error(1, error32, &error_found, handle_errors);
897
898 if (stat32)
899 global_error(0, stat32, &error_found, handle_errors);
900
901 e752x_check_hub_interface(info, &error_found, handle_errors);
902 e752x_check_ns_interface(info, &error_found, handle_errors);
903 e752x_check_sysbus(info, &error_found, handle_errors);
904 e752x_check_membuf(info, &error_found, handle_errors);
905 e752x_check_dram(mci, info, &error_found, handle_errors);
906 return error_found;
907 }
908
909 static void e752x_check(struct mem_ctl_info *mci)
910 {
911 struct e752x_error_info info;
912
913 debugf3("%s()\n", __func__);
914 e752x_get_error_info(mci, &info);
915 e752x_process_error_info(mci, &info, 1);
916 }
917
918 /* Return 1 if dual channel mode is active. Else return 0. */
919 static inline int dual_channel_active(u16 ddrcsr)
920 {
921 return (((ddrcsr >> 12) & 3) == 3);
922 }
923
924 /* Remap csrow index numbers if map_type is "reverse"
925 */
926 static inline int remap_csrow_index(struct mem_ctl_info *mci, int index)
927 {
928 struct e752x_pvt *pvt = mci->pvt_info;
929
930 if (!pvt->map_type)
931 return (7 - index);
932
933 return (index);
934 }
935
936 static void e752x_init_csrows(struct mem_ctl_info *mci, struct pci_dev *pdev,
937 u16 ddrcsr)
938 {
939 struct csrow_info *csrow;
940 unsigned long last_cumul_size;
941 int index, mem_dev, drc_chan;
942 int drc_drbg; /* DRB granularity 0=64mb, 1=128mb */
943 int drc_ddim; /* DRAM Data Integrity Mode 0=none, 2=edac */
944 u8 value;
945 u32 dra, drc, cumul_size;
946
947 dra = 0;
948 for (index = 0; index < 4; index++) {
949 u8 dra_reg;
950 pci_read_config_byte(pdev, E752X_DRA + index, &dra_reg);
951 dra |= dra_reg << (index * 8);
952 }
953 pci_read_config_dword(pdev, E752X_DRC, &drc);
954 drc_chan = dual_channel_active(ddrcsr);
955 drc_drbg = drc_chan + 1; /* 128 in dual mode, 64 in single */
956 drc_ddim = (drc >> 20) & 0x3;
957
958 /* The dram row boundary (DRB) reg values are boundary address for
959 * each DRAM row with a granularity of 64 or 128MB (single/dual
960 * channel operation). DRB regs are cumulative; therefore DRB7 will
961 * contain the total memory contained in all eight rows.
962 */
963 for (last_cumul_size = index = 0; index < mci->nr_csrows; index++) {
964 /* mem_dev 0=x8, 1=x4 */
965 mem_dev = (dra >> (index * 4 + 2)) & 0x3;
966 csrow = &mci->csrows[remap_csrow_index(mci, index)];
967
968 mem_dev = (mem_dev == 2);
969 pci_read_config_byte(pdev, E752X_DRB + index, &value);
970 /* convert a 128 or 64 MiB DRB to a page size. */
971 cumul_size = value << (25 + drc_drbg - PAGE_SHIFT);
972 debugf3("%s(): (%d) cumul_size 0x%x\n", __func__, index,
973 cumul_size);
974 if (cumul_size == last_cumul_size)
975 continue; /* not populated */
976
977 csrow->first_page = last_cumul_size;
978 csrow->last_page = cumul_size - 1;
979 csrow->nr_pages = cumul_size - last_cumul_size;
980 last_cumul_size = cumul_size;
981 csrow->grain = 1 << 12; /* 4KiB - resolution of CELOG */
982 csrow->mtype = MEM_RDDR; /* only one type supported */
983 csrow->dtype = mem_dev ? DEV_X4 : DEV_X8;
984
985 /*
986 * if single channel or x8 devices then SECDED
987 * if dual channel and x4 then S4ECD4ED
988 */
989 if (drc_ddim) {
990 if (drc_chan && mem_dev) {
991 csrow->edac_mode = EDAC_S4ECD4ED;
992 mci->edac_cap |= EDAC_FLAG_S4ECD4ED;
993 } else {
994 csrow->edac_mode = EDAC_SECDED;
995 mci->edac_cap |= EDAC_FLAG_SECDED;
996 }
997 } else
998 csrow->edac_mode = EDAC_NONE;
999 }
1000 }
1001
1002 static void e752x_init_mem_map_table(struct pci_dev *pdev,
1003 struct e752x_pvt *pvt)
1004 {
1005 int index;
1006 u8 value, last, row;
1007
1008 last = 0;
1009 row = 0;
1010
1011 for (index = 0; index < 8; index += 2) {
1012 pci_read_config_byte(pdev, E752X_DRB + index, &value);
1013 /* test if there is a dimm in this slot */
1014 if (value == last) {
1015 /* no dimm in the slot, so flag it as empty */
1016 pvt->map[index] = 0xff;
1017 pvt->map[index + 1] = 0xff;
1018 } else { /* there is a dimm in the slot */
1019 pvt->map[index] = row;
1020 row++;
1021 last = value;
1022 /* test the next value to see if the dimm is double
1023 * sided
1024 */
1025 pci_read_config_byte(pdev, E752X_DRB + index + 1,
1026 &value);
1027
1028 /* the dimm is single sided, so flag as empty */
1029 /* this is a double sided dimm to save the next row #*/
1030 pvt->map[index + 1] = (value == last) ? 0xff : row;
1031 row++;
1032 last = value;
1033 }
1034 }
1035 }
1036
1037 /* Return 0 on success or 1 on failure. */
1038 static int e752x_get_devs(struct pci_dev *pdev, int dev_idx,
1039 struct e752x_pvt *pvt)
1040 {
1041 struct pci_dev *dev;
1042
1043 pvt->bridge_ck = pci_get_device(PCI_VENDOR_ID_INTEL,
1044 pvt->dev_info->err_dev, pvt->bridge_ck);
1045
1046 if (pvt->bridge_ck == NULL)
1047 pvt->bridge_ck = pci_scan_single_device(pdev->bus,
1048 PCI_DEVFN(0, 1));
1049
1050 if (pvt->bridge_ck == NULL) {
1051 e752x_printk(KERN_ERR, "error reporting device not found:"
1052 "vendor %x device 0x%x (broken BIOS?)\n",
1053 PCI_VENDOR_ID_INTEL, e752x_devs[dev_idx].err_dev);
1054 return 1;
1055 }
1056
1057 dev = pci_get_device(PCI_VENDOR_ID_INTEL,
1058 e752x_devs[dev_idx].ctl_dev,
1059 NULL);
1060
1061 if (dev == NULL)
1062 goto fail;
1063
1064 pvt->dev_d0f0 = dev;
1065 pvt->dev_d0f1 = pci_dev_get(pvt->bridge_ck);
1066
1067 return 0;
1068
1069 fail:
1070 pci_dev_put(pvt->bridge_ck);
1071 return 1;
1072 }
1073
1074 /* Setup system bus parity mask register.
1075 * Sysbus parity supported on:
1076 * e7320/e7520/e7525 + Xeon
1077 * i3100 + Xeon/Celeron
1078 * Sysbus parity not supported on:
1079 * i3100 + Pentium M/Celeron M/Core Duo/Core2 Duo
1080 */
1081 static void e752x_init_sysbus_parity_mask(struct e752x_pvt *pvt)
1082 {
1083 char *cpu_id = cpu_data(0).x86_model_id;
1084 struct pci_dev *dev = pvt->dev_d0f1;
1085 int enable = 1;
1086
1087 /* Allow module parameter override, else see if CPU supports parity */
1088 if (sysbus_parity != -1) {
1089 enable = sysbus_parity;
1090 } else if (cpu_id[0] &&
1091 ((strstr(cpu_id, "Pentium") && strstr(cpu_id, " M ")) ||
1092 (strstr(cpu_id, "Celeron") && strstr(cpu_id, " M ")) ||
1093 (strstr(cpu_id, "Core") && strstr(cpu_id, "Duo")))) {
1094 e752x_printk(KERN_INFO, "System Bus Parity not "
1095 "supported by CPU, disabling\n");
1096 enable = 0;
1097 }
1098
1099 if (enable)
1100 pci_write_config_word(dev, E752X_SYSBUS_ERRMASK, 0x0000);
1101 else
1102 pci_write_config_word(dev, E752X_SYSBUS_ERRMASK, 0x0309);
1103 }
1104
1105 static void e752x_init_error_reporting_regs(struct e752x_pvt *pvt)
1106 {
1107 struct pci_dev *dev;
1108
1109 dev = pvt->dev_d0f1;
1110 /* Turn off error disable & SMI in case the BIOS turned it on */
1111 if (pvt->dev_info->err_dev == PCI_DEVICE_ID_INTEL_3100_1_ERR) {
1112 pci_write_config_dword(dev, I3100_NSI_EMASK, 0);
1113 pci_write_config_dword(dev, I3100_NSI_SMICMD, 0);
1114 } else {
1115 pci_write_config_byte(dev, E752X_HI_ERRMASK, 0x00);
1116 pci_write_config_byte(dev, E752X_HI_SMICMD, 0x00);
1117 }
1118
1119 e752x_init_sysbus_parity_mask(pvt);
1120
1121 pci_write_config_word(dev, E752X_SYSBUS_SMICMD, 0x00);
1122 pci_write_config_byte(dev, E752X_BUF_ERRMASK, 0x00);
1123 pci_write_config_byte(dev, E752X_BUF_SMICMD, 0x00);
1124 pci_write_config_byte(dev, E752X_DRAM_ERRMASK, 0x00);
1125 pci_write_config_byte(dev, E752X_DRAM_SMICMD, 0x00);
1126 }
1127
1128 static int e752x_probe1(struct pci_dev *pdev, int dev_idx)
1129 {
1130 u16 pci_data;
1131 u8 stat8;
1132 struct mem_ctl_info *mci;
1133 struct e752x_pvt *pvt;
1134 u16 ddrcsr;
1135 int drc_chan; /* Number of channels 0=1chan,1=2chan */
1136 struct e752x_error_info discard;
1137
1138 debugf0("%s(): mci\n", __func__);
1139 debugf0("Starting Probe1\n");
1140
1141 /* check to see if device 0 function 1 is enabled; if it isn't, we
1142 * assume the BIOS has reserved it for a reason and is expecting
1143 * exclusive access, we take care not to violate that assumption and
1144 * fail the probe. */
1145 pci_read_config_byte(pdev, E752X_DEVPRES1, &stat8);
1146 if (!force_function_unhide && !(stat8 & (1 << 5))) {
1147 printk(KERN_INFO "Contact your BIOS vendor to see if the "
1148 "E752x error registers can be safely un-hidden\n");
1149 return -ENODEV;
1150 }
1151 stat8 |= (1 << 5);
1152 pci_write_config_byte(pdev, E752X_DEVPRES1, stat8);
1153
1154 pci_read_config_word(pdev, E752X_DDRCSR, &ddrcsr);
1155 /* FIXME: should check >>12 or 0xf, true for all? */
1156 /* Dual channel = 1, Single channel = 0 */
1157 drc_chan = dual_channel_active(ddrcsr);
1158
1159 mci = edac_mc_alloc(sizeof(*pvt), E752X_NR_CSROWS, drc_chan + 1, 0);
1160
1161 if (mci == NULL) {
1162 return -ENOMEM;
1163 }
1164
1165 debugf3("%s(): init mci\n", __func__);
1166 mci->mtype_cap = MEM_FLAG_RDDR;
1167 /* 3100 IMCH supports SECDEC only */
1168 mci->edac_ctl_cap = (dev_idx == I3100) ? EDAC_FLAG_SECDED :
1169 (EDAC_FLAG_NONE | EDAC_FLAG_SECDED | EDAC_FLAG_S4ECD4ED);
1170 /* FIXME - what if different memory types are in different csrows? */
1171 mci->mod_name = EDAC_MOD_STR;
1172 mci->mod_ver = E752X_REVISION;
1173 mci->dev = &pdev->dev;
1174
1175 debugf3("%s(): init pvt\n", __func__);
1176 pvt = (struct e752x_pvt *)mci->pvt_info;
1177 pvt->dev_info = &e752x_devs[dev_idx];
1178 pvt->mc_symmetric = ((ddrcsr & 0x10) != 0);
1179
1180 if (e752x_get_devs(pdev, dev_idx, pvt)) {
1181 edac_mc_free(mci);
1182 return -ENODEV;
1183 }
1184
1185 debugf3("%s(): more mci init\n", __func__);
1186 mci->ctl_name = pvt->dev_info->ctl_name;
1187 mci->dev_name = pci_name(pdev);
1188 mci->edac_check = e752x_check;
1189 mci->ctl_page_to_phys = ctl_page_to_phys;
1190
1191 /* set the map type. 1 = normal, 0 = reversed
1192 * Must be set before e752x_init_csrows in case csrow mapping
1193 * is reversed.
1194 */
1195 pci_read_config_byte(pdev, E752X_DRM, &stat8);
1196 pvt->map_type = ((stat8 & 0x0f) > ((stat8 >> 4) & 0x0f));
1197
1198 e752x_init_csrows(mci, pdev, ddrcsr);
1199 e752x_init_mem_map_table(pdev, pvt);
1200
1201 if (dev_idx == I3100)
1202 mci->edac_cap = EDAC_FLAG_SECDED; /* the only mode supported */
1203 else
1204 mci->edac_cap |= EDAC_FLAG_NONE;
1205 debugf3("%s(): tolm, remapbase, remaplimit\n", __func__);
1206
1207 /* load the top of low memory, remap base, and remap limit vars */
1208 pci_read_config_word(pdev, E752X_TOLM, &pci_data);
1209 pvt->tolm = ((u32) pci_data) << 4;
1210 pci_read_config_word(pdev, E752X_REMAPBASE, &pci_data);
1211 pvt->remapbase = ((u32) pci_data) << 14;
1212 pci_read_config_word(pdev, E752X_REMAPLIMIT, &pci_data);
1213 pvt->remaplimit = ((u32) pci_data) << 14;
1214 e752x_printk(KERN_INFO,
1215 "tolm = %x, remapbase = %x, remaplimit = %x\n",
1216 pvt->tolm, pvt->remapbase, pvt->remaplimit);
1217
1218 /* Here we assume that we will never see multiple instances of this
1219 * type of memory controller. The ID is therefore hardcoded to 0.
1220 */
1221 if (edac_mc_add_mc(mci)) {
1222 debugf3("%s(): failed edac_mc_add_mc()\n", __func__);
1223 goto fail;
1224 }
1225
1226 e752x_init_error_reporting_regs(pvt);
1227 e752x_get_error_info(mci, &discard); /* clear other MCH errors */
1228
1229 /* allocating generic PCI control info */
1230 e752x_pci = edac_pci_create_generic_ctl(&pdev->dev, EDAC_MOD_STR);
1231 if (!e752x_pci) {
1232 printk(KERN_WARNING
1233 "%s(): Unable to create PCI control\n", __func__);
1234 printk(KERN_WARNING
1235 "%s(): PCI error report via EDAC not setup\n",
1236 __func__);
1237 }
1238
1239 /* get this far and it's successful */
1240 debugf3("%s(): success\n", __func__);
1241 return 0;
1242
1243 fail:
1244 pci_dev_put(pvt->dev_d0f0);
1245 pci_dev_put(pvt->dev_d0f1);
1246 pci_dev_put(pvt->bridge_ck);
1247 edac_mc_free(mci);
1248
1249 return -ENODEV;
1250 }
1251
1252 /* returns count (>= 0), or negative on error */
1253 static int __devinit e752x_init_one(struct pci_dev *pdev,
1254 const struct pci_device_id *ent)
1255 {
1256 debugf0("%s()\n", __func__);
1257
1258 /* wake up and enable device */
1259 if (pci_enable_device(pdev) < 0)
1260 return -EIO;
1261
1262 return e752x_probe1(pdev, ent->driver_data);
1263 }
1264
1265 static void __devexit e752x_remove_one(struct pci_dev *pdev)
1266 {
1267 struct mem_ctl_info *mci;
1268 struct e752x_pvt *pvt;
1269
1270 debugf0("%s()\n", __func__);
1271
1272 if (e752x_pci)
1273 edac_pci_release_generic_ctl(e752x_pci);
1274
1275 if ((mci = edac_mc_del_mc(&pdev->dev)) == NULL)
1276 return;
1277
1278 pvt = (struct e752x_pvt *)mci->pvt_info;
1279 pci_dev_put(pvt->dev_d0f0);
1280 pci_dev_put(pvt->dev_d0f1);
1281 pci_dev_put(pvt->bridge_ck);
1282 edac_mc_free(mci);
1283 }
1284
1285 static const struct pci_device_id e752x_pci_tbl[] __devinitdata = {
1286 {
1287 PCI_VEND_DEV(INTEL, 7520_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1288 E7520},
1289 {
1290 PCI_VEND_DEV(INTEL, 7525_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1291 E7525},
1292 {
1293 PCI_VEND_DEV(INTEL, 7320_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1294 E7320},
1295 {
1296 PCI_VEND_DEV(INTEL, 3100_0), PCI_ANY_ID, PCI_ANY_ID, 0, 0,
1297 I3100},
1298 {
1299 0,
1300 } /* 0 terminated list. */
1301 };
1302
1303 MODULE_DEVICE_TABLE(pci, e752x_pci_tbl);
1304
1305 static struct pci_driver e752x_driver = {
1306 .name = EDAC_MOD_STR,
1307 .probe = e752x_init_one,
1308 .remove = __devexit_p(e752x_remove_one),
1309 .id_table = e752x_pci_tbl,
1310 };
1311
1312 static int __init e752x_init(void)
1313 {
1314 int pci_rc;
1315
1316 debugf3("%s()\n", __func__);
1317
1318 /* Ensure that the OPSTATE is set correctly for POLL or NMI */
1319 opstate_init();
1320
1321 pci_rc = pci_register_driver(&e752x_driver);
1322 return (pci_rc < 0) ? pci_rc : 0;
1323 }
1324
1325 static void __exit e752x_exit(void)
1326 {
1327 debugf3("%s()\n", __func__);
1328 pci_unregister_driver(&e752x_driver);
1329 }
1330
1331 module_init(e752x_init);
1332 module_exit(e752x_exit);
1333
1334 MODULE_LICENSE("GPL");
1335 MODULE_AUTHOR("Linux Networx (http://lnxi.com) Tom Zimmerman\n");
1336 MODULE_DESCRIPTION("MC support for Intel e752x/3100 memory controllers");
1337
1338 module_param(force_function_unhide, int, 0444);
1339 MODULE_PARM_DESC(force_function_unhide, "if BIOS sets Dev0:Fun1 up as hidden:"
1340 " 1=force unhide and hope BIOS doesn't fight driver for "
1341 "Dev0:Fun1 access");
1342
1343 module_param(edac_op_state, int, 0444);
1344 MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll,1=NMI");
1345
1346 module_param(sysbus_parity, int, 0444);
1347 MODULE_PARM_DESC(sysbus_parity, "0=disable system bus parity checking,"
1348 " 1=enable system bus parity checking, default=auto-detect");
1349 module_param(report_non_memory_errors, int, 0644);
1350 MODULE_PARM_DESC(report_non_memory_errors, "0=disable non-memory error "
1351 "reporting, 1=enable non-memory error reporting");
Support for the Chinese Samsung S3C2440 based development boards