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a0c36a1f MCC |
1 | /* Intel 7 core Memory Controller kernel module (Nehalem) |
2 | * | |
3 | * This file may be distributed under the terms of the | |
4 | * GNU General Public License version 2 only. | |
5 | * | |
6 | * Copyright (c) 2009 by: | |
7 | * Mauro Carvalho Chehab <mchehab@redhat.com> | |
8 | * | |
9 | * Red Hat Inc. http://www.redhat.com | |
10 | * | |
11 | * Forked and adapted from the i5400_edac driver | |
12 | * | |
13 | * Based on the following public Intel datasheets: | |
14 | * Intel Core i7 Processor Extreme Edition and Intel Core i7 Processor | |
15 | * Datasheet, Volume 2: | |
16 | * http://download.intel.com/design/processor/datashts/320835.pdf | |
17 | * Intel Xeon Processor 5500 Series Datasheet Volume 2 | |
18 | * http://www.intel.com/Assets/PDF/datasheet/321322.pdf | |
19 | * also available at: | |
20 | * http://www.arrownac.com/manufacturers/intel/s/nehalem/5500-datasheet-v2.pdf | |
21 | */ | |
22 | ||
a0c36a1f MCC |
23 | #include <linux/module.h> |
24 | #include <linux/init.h> | |
25 | #include <linux/pci.h> | |
26 | #include <linux/pci_ids.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/edac.h> | |
29 | #include <linux/mmzone.h> | |
30 | ||
31 | #include "edac_core.h" | |
32 | ||
7b029d03 MCC |
33 | /* To use the new pci_[read/write]_config_qword instead of two dword */ |
34 | #define USE_QWORD 1 | |
a0c36a1f MCC |
35 | |
36 | /* | |
37 | * Alter this version for the module when modifications are made | |
38 | */ | |
39 | #define I7CORE_REVISION " Ver: 1.0.0 " __DATE__ | |
40 | #define EDAC_MOD_STR "i7core_edac" | |
41 | ||
42 | /* HACK: temporary, just to enable all logs, for now */ | |
43 | #undef debugf0 | |
44 | #define debugf0(fmt, arg...) edac_printk(KERN_INFO, "i7core", fmt, ##arg) | |
45 | ||
46 | /* | |
47 | * Debug macros | |
48 | */ | |
49 | #define i7core_printk(level, fmt, arg...) \ | |
50 | edac_printk(level, "i7core", fmt, ##arg) | |
51 | ||
52 | #define i7core_mc_printk(mci, level, fmt, arg...) \ | |
53 | edac_mc_chipset_printk(mci, level, "i7core", fmt, ##arg) | |
54 | ||
55 | /* | |
56 | * i7core Memory Controller Registers | |
57 | */ | |
58 | ||
59 | /* OFFSETS for Device 3 Function 0 */ | |
60 | ||
61 | #define MC_CONTROL 0x48 | |
62 | #define MC_STATUS 0x4c | |
63 | #define MC_MAX_DOD 0x64 | |
64 | ||
442305b1 MCC |
65 | /* |
66 | * OFFSETS for Device 3 Function 4, as inicated on Xeon 5500 datasheet: | |
67 | * http://www.arrownac.com/manufacturers/intel/s/nehalem/5500-datasheet-v2.pdf | |
68 | */ | |
69 | ||
70 | #define MC_TEST_ERR_RCV1 0x60 | |
71 | #define DIMM2_COR_ERR(r) ((r) & 0x7fff) | |
72 | ||
73 | #define MC_TEST_ERR_RCV0 0x64 | |
74 | #define DIMM1_COR_ERR(r) (((r) >> 16) & 0x7fff) | |
75 | #define DIMM0_COR_ERR(r) ((r) & 0x7fff) | |
76 | ||
a0c36a1f MCC |
77 | /* OFFSETS for Devices 4,5 and 6 Function 0 */ |
78 | ||
0b2b7b7e MCC |
79 | #define MC_CHANNEL_DIMM_INIT_PARAMS 0x58 |
80 | #define THREE_DIMMS_PRESENT (1 << 24) | |
81 | #define SINGLE_QUAD_RANK_PRESENT (1 << 23) | |
82 | #define QUAD_RANK_PRESENT (1 << 22) | |
83 | #define REGISTERED_DIMM (1 << 15) | |
84 | ||
f122a892 MCC |
85 | #define MC_CHANNEL_MAPPER 0x60 |
86 | #define RDLCH(r, ch) ((((r) >> (3 + (ch * 6))) & 0x07) - 1) | |
87 | #define WRLCH(r, ch) ((((r) >> (ch * 6)) & 0x07) - 1) | |
88 | ||
0b2b7b7e MCC |
89 | #define MC_CHANNEL_RANK_PRESENT 0x7c |
90 | #define RANK_PRESENT_MASK 0xffff | |
91 | ||
a0c36a1f | 92 | #define MC_CHANNEL_ADDR_MATCH 0xf0 |
194a40fe MCC |
93 | #define MC_CHANNEL_ERROR_MASK 0xf8 |
94 | #define MC_CHANNEL_ERROR_INJECT 0xfc | |
95 | #define INJECT_ADDR_PARITY 0x10 | |
96 | #define INJECT_ECC 0x08 | |
97 | #define MASK_CACHELINE 0x06 | |
98 | #define MASK_FULL_CACHELINE 0x06 | |
99 | #define MASK_MSB32_CACHELINE 0x04 | |
100 | #define MASK_LSB32_CACHELINE 0x02 | |
101 | #define NO_MASK_CACHELINE 0x00 | |
102 | #define REPEAT_EN 0x01 | |
a0c36a1f | 103 | |
0b2b7b7e MCC |
104 | /* OFFSETS for Devices 4,5 and 6 Function 1 */ |
105 | #define MC_DOD_CH_DIMM0 0x48 | |
106 | #define MC_DOD_CH_DIMM1 0x4c | |
107 | #define MC_DOD_CH_DIMM2 0x50 | |
108 | #define RANKOFFSET_MASK ((1 << 12) | (1 << 11) | (1 << 10)) | |
109 | #define RANKOFFSET(x) ((x & RANKOFFSET_MASK) >> 10) | |
110 | #define DIMM_PRESENT_MASK (1 << 9) | |
111 | #define DIMM_PRESENT(x) (((x) & DIMM_PRESENT_MASK) >> 9) | |
112 | #define NUMBANK_MASK ((1 << 8) | (1 << 7)) | |
113 | #define NUMBANK(x) (((x) & NUMBANK_MASK) >> 7) | |
114 | #define NUMRANK_MASK ((1 << 6) | (1 << 5)) | |
115 | #define NUMRANK(x) (((x) & NUMRANK_MASK) >> 5) | |
116 | #define NUMROW_MASK ((1 << 4) | (1 << 3)) | |
117 | #define NUMROW(x) (((x) & NUMROW_MASK) >> 3) | |
118 | #define NUMCOL_MASK 3 | |
119 | #define NUMCOL(x) ((x) & NUMCOL_MASK) | |
120 | ||
f122a892 MCC |
121 | #define MC_RANK_PRESENT 0x7c |
122 | ||
0b2b7b7e MCC |
123 | #define MC_SAG_CH_0 0x80 |
124 | #define MC_SAG_CH_1 0x84 | |
125 | #define MC_SAG_CH_2 0x88 | |
126 | #define MC_SAG_CH_3 0x8c | |
127 | #define MC_SAG_CH_4 0x90 | |
128 | #define MC_SAG_CH_5 0x94 | |
129 | #define MC_SAG_CH_6 0x98 | |
130 | #define MC_SAG_CH_7 0x9c | |
131 | ||
132 | #define MC_RIR_LIMIT_CH_0 0x40 | |
133 | #define MC_RIR_LIMIT_CH_1 0x44 | |
134 | #define MC_RIR_LIMIT_CH_2 0x48 | |
135 | #define MC_RIR_LIMIT_CH_3 0x4C | |
136 | #define MC_RIR_LIMIT_CH_4 0x50 | |
137 | #define MC_RIR_LIMIT_CH_5 0x54 | |
138 | #define MC_RIR_LIMIT_CH_6 0x58 | |
139 | #define MC_RIR_LIMIT_CH_7 0x5C | |
140 | #define MC_RIR_LIMIT_MASK ((1 << 10) - 1) | |
141 | ||
142 | #define MC_RIR_WAY_CH 0x80 | |
143 | #define MC_RIR_WAY_OFFSET_MASK (((1 << 14) - 1) & ~0x7) | |
144 | #define MC_RIR_WAY_RANK_MASK 0x7 | |
145 | ||
a0c36a1f MCC |
146 | /* |
147 | * i7core structs | |
148 | */ | |
149 | ||
150 | #define NUM_CHANS 3 | |
442305b1 MCC |
151 | #define MAX_DIMMS 3 /* Max DIMMS per channel */ |
152 | #define MAX_MCR_FUNC 4 | |
153 | #define MAX_CHAN_FUNC 3 | |
a0c36a1f MCC |
154 | |
155 | struct i7core_info { | |
156 | u32 mc_control; | |
157 | u32 mc_status; | |
158 | u32 max_dod; | |
f122a892 | 159 | u32 ch_map; |
a0c36a1f MCC |
160 | }; |
161 | ||
194a40fe MCC |
162 | |
163 | struct i7core_inject { | |
164 | int enable; | |
165 | ||
166 | u32 section; | |
167 | u32 type; | |
168 | u32 eccmask; | |
169 | ||
170 | /* Error address mask */ | |
171 | int channel, dimm, rank, bank, page, col; | |
172 | }; | |
173 | ||
0b2b7b7e | 174 | struct i7core_channel { |
442305b1 MCC |
175 | u32 ranks; |
176 | u32 dimms; | |
0b2b7b7e MCC |
177 | }; |
178 | ||
8f331907 MCC |
179 | struct pci_id_descr { |
180 | int dev; | |
181 | int func; | |
182 | int dev_id; | |
183 | struct pci_dev *pdev; | |
184 | }; | |
185 | ||
a0c36a1f | 186 | struct i7core_pvt { |
442305b1 MCC |
187 | struct pci_dev *pci_mcr[MAX_MCR_FUNC + 1]; |
188 | struct pci_dev *pci_ch[NUM_CHANS][MAX_CHAN_FUNC + 1]; | |
a0c36a1f | 189 | struct i7core_info info; |
194a40fe | 190 | struct i7core_inject inject; |
0b2b7b7e | 191 | struct i7core_channel channel[NUM_CHANS]; |
ef708b53 | 192 | int channels; /* Number of active channels */ |
442305b1 MCC |
193 | |
194 | int ce_count_available; | |
195 | unsigned long ce_count[MAX_DIMMS]; /* ECC corrected errors counts per dimm */ | |
196 | int last_ce_count[MAX_DIMMS]; | |
197 | ||
a0c36a1f MCC |
198 | }; |
199 | ||
200 | /* Device name and register DID (Device ID) */ | |
201 | struct i7core_dev_info { | |
202 | const char *ctl_name; /* name for this device */ | |
203 | u16 fsb_mapping_errors; /* DID for the branchmap,control */ | |
204 | }; | |
205 | ||
8f331907 MCC |
206 | #define PCI_DESCR(device, function, device_id) \ |
207 | .dev = (device), \ | |
208 | .func = (function), \ | |
209 | .dev_id = (device_id) | |
210 | ||
211 | struct pci_id_descr pci_devs[] = { | |
212 | /* Memory controller */ | |
213 | { PCI_DESCR(3, 0, PCI_DEVICE_ID_INTEL_I7_MCR) }, | |
214 | { PCI_DESCR(3, 1, PCI_DEVICE_ID_INTEL_I7_MC_TAD) }, | |
215 | { PCI_DESCR(3, 2, PCI_DEVICE_ID_INTEL_I7_MC_RAS) }, /* if RDIMM is supported */ | |
216 | { PCI_DESCR(3, 4, PCI_DEVICE_ID_INTEL_I7_MC_TEST) }, | |
217 | ||
218 | /* Channel 0 */ | |
219 | { PCI_DESCR(4, 0, PCI_DEVICE_ID_INTEL_I7_MC_CH0_CTRL) }, | |
220 | { PCI_DESCR(4, 1, PCI_DEVICE_ID_INTEL_I7_MC_CH0_ADDR) }, | |
221 | { PCI_DESCR(4, 2, PCI_DEVICE_ID_INTEL_I7_MC_CH0_RANK) }, | |
222 | { PCI_DESCR(4, 3, PCI_DEVICE_ID_INTEL_I7_MC_CH0_TC) }, | |
223 | ||
224 | /* Channel 1 */ | |
225 | { PCI_DESCR(5, 0, PCI_DEVICE_ID_INTEL_I7_MC_CH1_CTRL) }, | |
226 | { PCI_DESCR(5, 1, PCI_DEVICE_ID_INTEL_I7_MC_CH1_ADDR) }, | |
227 | { PCI_DESCR(5, 2, PCI_DEVICE_ID_INTEL_I7_MC_CH1_RANK) }, | |
228 | { PCI_DESCR(5, 3, PCI_DEVICE_ID_INTEL_I7_MC_CH1_TC) }, | |
229 | ||
230 | /* Channel 2 */ | |
231 | { PCI_DESCR(6, 0, PCI_DEVICE_ID_INTEL_I7_MC_CH2_CTRL) }, | |
232 | { PCI_DESCR(6, 1, PCI_DEVICE_ID_INTEL_I7_MC_CH2_ADDR) }, | |
233 | { PCI_DESCR(6, 2, PCI_DEVICE_ID_INTEL_I7_MC_CH2_RANK) }, | |
234 | { PCI_DESCR(6, 3, PCI_DEVICE_ID_INTEL_I7_MC_CH2_TC) }, | |
a0c36a1f | 235 | }; |
8f331907 MCC |
236 | #define N_DEVS ARRAY_SIZE(pci_devs) |
237 | ||
238 | /* | |
239 | * pci_device_id table for which devices we are looking for | |
240 | * This should match the first device at pci_devs table | |
241 | */ | |
242 | static const struct pci_device_id i7core_pci_tbl[] __devinitdata = { | |
243 | {PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_I7_MCR)}, | |
244 | {0,} /* 0 terminated list. */ | |
245 | }; | |
246 | ||
a0c36a1f MCC |
247 | |
248 | /* Table of devices attributes supported by this driver */ | |
249 | static const struct i7core_dev_info i7core_devs[] = { | |
250 | { | |
251 | .ctl_name = "i7 Core", | |
252 | .fsb_mapping_errors = PCI_DEVICE_ID_INTEL_I7_MCR, | |
253 | }, | |
254 | }; | |
255 | ||
256 | static struct edac_pci_ctl_info *i7core_pci; | |
257 | ||
258 | /**************************************************************************** | |
259 | Anciliary status routines | |
260 | ****************************************************************************/ | |
261 | ||
262 | /* MC_CONTROL bits */ | |
ef708b53 MCC |
263 | #define CH_ACTIVE(pvt, ch) ((pvt)->info.mc_control & (1 << (8 + ch))) |
264 | #define ECCx8(pvt) ((pvt)->info.mc_control & (1 << 1)) | |
a0c36a1f MCC |
265 | |
266 | /* MC_STATUS bits */ | |
ef708b53 MCC |
267 | #define ECC_ENABLED(pvt) ((pvt)->info.mc_status & (1 << 3)) |
268 | #define CH_DISABLED(pvt, ch) ((pvt)->info.mc_status & (1 << ch)) | |
a0c36a1f MCC |
269 | |
270 | /* MC_MAX_DOD read functions */ | |
271 | static inline int maxnumdimms(struct i7core_pvt *pvt) | |
272 | { | |
273 | return (pvt->info.max_dod & 0x3) + 1; | |
274 | } | |
275 | ||
276 | static inline int maxnumrank(struct i7core_pvt *pvt) | |
277 | { | |
278 | static int ranks[4] = { 1, 2, 4, -EINVAL }; | |
279 | ||
280 | return ranks[(pvt->info.max_dod >> 2) & 0x3]; | |
281 | } | |
282 | ||
283 | static inline int maxnumbank(struct i7core_pvt *pvt) | |
284 | { | |
285 | static int banks[4] = { 4, 8, 16, -EINVAL }; | |
286 | ||
287 | return banks[(pvt->info.max_dod >> 4) & 0x3]; | |
288 | } | |
289 | ||
290 | static inline int maxnumrow(struct i7core_pvt *pvt) | |
291 | { | |
292 | static int rows[8] = { | |
293 | 1 << 12, 1 << 13, 1 << 14, 1 << 15, | |
294 | 1 << 16, -EINVAL, -EINVAL, -EINVAL, | |
295 | }; | |
296 | ||
297 | return rows[((pvt->info.max_dod >> 6) & 0x7)]; | |
298 | } | |
299 | ||
300 | static inline int maxnumcol(struct i7core_pvt *pvt) | |
301 | { | |
302 | static int cols[8] = { | |
303 | 1 << 10, 1 << 11, 1 << 12, -EINVAL, | |
304 | }; | |
305 | return cols[((pvt->info.max_dod >> 9) & 0x3) << 12]; | |
306 | } | |
307 | ||
194a40fe | 308 | |
a0c36a1f MCC |
309 | /**************************************************************************** |
310 | Memory check routines | |
311 | ****************************************************************************/ | |
ef708b53 MCC |
312 | static int i7core_get_active_channels(int *channels) |
313 | { | |
314 | struct pci_dev *pdev = NULL; | |
315 | int i; | |
316 | u32 status, control; | |
317 | ||
318 | *channels = 0; | |
319 | ||
320 | for (i = 0; i < N_DEVS; i++) { | |
321 | if (!pci_devs[i].pdev) | |
322 | continue; | |
323 | ||
324 | if (PCI_SLOT(pci_devs[i].pdev->devfn) == 3 && | |
325 | PCI_FUNC(pci_devs[i].pdev->devfn) == 0) { | |
326 | pdev = pci_devs[i].pdev; | |
327 | break; | |
328 | } | |
329 | } | |
330 | ||
331 | if (!pdev) | |
332 | return -ENODEV; | |
333 | ||
334 | /* Device 3 function 0 reads */ | |
335 | pci_read_config_dword(pdev, MC_STATUS, &status); | |
336 | pci_read_config_dword(pdev, MC_CONTROL, &control); | |
337 | ||
338 | for (i = 0; i < NUM_CHANS; i++) { | |
339 | /* Check if the channel is active */ | |
340 | if (!(control & (1 << (8 + i)))) | |
341 | continue; | |
342 | ||
343 | /* Check if the channel is disabled */ | |
344 | if (status & (1 << i)) { | |
345 | continue; | |
346 | } | |
347 | ||
348 | (*channels)++; | |
349 | } | |
350 | ||
351 | return 0; | |
352 | } | |
353 | ||
a0c36a1f MCC |
354 | static int get_dimm_config(struct mem_ctl_info *mci) |
355 | { | |
356 | struct i7core_pvt *pvt = mci->pvt_info; | |
0b2b7b7e | 357 | int i; |
a0c36a1f | 358 | |
8f331907 MCC |
359 | if (!pvt->pci_mcr[0]) |
360 | return -ENODEV; | |
361 | ||
f122a892 MCC |
362 | /* Device 3 function 0 reads */ |
363 | pci_read_config_dword(pvt->pci_mcr[0], MC_CONTROL, | |
364 | &pvt->info.mc_control); | |
365 | pci_read_config_dword(pvt->pci_mcr[0], MC_STATUS, | |
366 | &pvt->info.mc_status); | |
367 | pci_read_config_dword(pvt->pci_mcr[0], MC_MAX_DOD, | |
368 | &pvt->info.max_dod); | |
369 | pci_read_config_dword(pvt->pci_mcr[0], MC_CHANNEL_MAPPER, | |
370 | &pvt->info.ch_map); | |
371 | ||
372 | debugf0("MC control=0x%08x status=0x%08x dod=0x%08x map=0x%08x\n", | |
373 | pvt->info.mc_control, pvt->info.mc_status, | |
374 | pvt->info.max_dod, pvt->info.ch_map); | |
a0c36a1f | 375 | |
a0c36a1f MCC |
376 | if (ECC_ENABLED(pvt)) |
377 | debugf0("ECC enabled with x%d SDCC\n", ECCx8(pvt)?8:4); | |
378 | else | |
379 | debugf0("ECC disabled\n"); | |
380 | ||
381 | /* FIXME: need to handle the error codes */ | |
382 | debugf0("DOD Maximum limits: DIMMS: %d, %d-ranked, %d-banked\n", | |
383 | maxnumdimms(pvt), maxnumrank(pvt), maxnumbank(pvt)); | |
384 | debugf0("DOD Maximum rows x colums = 0x%x x 0x%x\n", | |
385 | maxnumrow(pvt), maxnumcol(pvt)); | |
386 | ||
0b2b7b7e MCC |
387 | debugf0("Memory channel configuration:\n"); |
388 | ||
389 | for (i = 0; i < NUM_CHANS; i++) { | |
390 | u32 data; | |
391 | ||
392 | if (!CH_ACTIVE(pvt, i)) { | |
393 | debugf0("Channel %i is not active\n", i); | |
394 | continue; | |
395 | } | |
396 | if (CH_DISABLED(pvt, i)) { | |
397 | debugf0("Channel %i is disabled\n", i); | |
398 | continue; | |
399 | } | |
400 | ||
f122a892 | 401 | /* Devices 4-6 function 0 */ |
0b2b7b7e MCC |
402 | pci_read_config_dword(pvt->pci_ch[i][0], |
403 | MC_CHANNEL_DIMM_INIT_PARAMS, &data); | |
404 | ||
405 | pvt->channel[i].ranks = (data & QUAD_RANK_PRESENT)? 4 : 2; | |
406 | ||
407 | if (data & THREE_DIMMS_PRESENT) | |
408 | pvt->channel[i].dimms = 3; | |
409 | else if (data & SINGLE_QUAD_RANK_PRESENT) | |
410 | pvt->channel[i].dimms = 1; | |
411 | else | |
412 | pvt->channel[i].dimms = 2; | |
413 | ||
f122a892 MCC |
414 | debugf0("Ch%d (0x%08x): rd ch %d, wr ch %d, " |
415 | "%d ranks, %d %cDIMMs\n", | |
416 | i, data, | |
417 | RDLCH(pvt->info.ch_map, i), | |
418 | WRLCH(pvt->info.ch_map, i), | |
0b2b7b7e | 419 | pvt->channel[i].ranks, pvt->channel[i].dimms, |
f122a892 | 420 | (data & REGISTERED_DIMM)? 'R' : 'U' ); |
0b2b7b7e MCC |
421 | } |
422 | ||
a0c36a1f MCC |
423 | return 0; |
424 | } | |
425 | ||
194a40fe MCC |
426 | /**************************************************************************** |
427 | Error insertion routines | |
428 | ****************************************************************************/ | |
429 | ||
430 | /* The i7core has independent error injection features per channel. | |
431 | However, to have a simpler code, we don't allow enabling error injection | |
432 | on more than one channel. | |
433 | Also, since a change at an inject parameter will be applied only at enable, | |
434 | we're disabling error injection on all write calls to the sysfs nodes that | |
435 | controls the error code injection. | |
436 | */ | |
8f331907 | 437 | static int disable_inject(struct mem_ctl_info *mci) |
194a40fe MCC |
438 | { |
439 | struct i7core_pvt *pvt = mci->pvt_info; | |
440 | ||
441 | pvt->inject.enable = 0; | |
442 | ||
8f331907 MCC |
443 | if (!pvt->pci_ch[pvt->inject.channel][0]) |
444 | return -ENODEV; | |
445 | ||
194a40fe MCC |
446 | pci_write_config_dword(pvt->pci_ch[pvt->inject.channel][0], |
447 | MC_CHANNEL_ERROR_MASK, 0); | |
8f331907 MCC |
448 | |
449 | return 0; | |
194a40fe MCC |
450 | } |
451 | ||
452 | /* | |
453 | * i7core inject inject.section | |
454 | * | |
455 | * accept and store error injection inject.section value | |
456 | * bit 0 - refers to the lower 32-byte half cacheline | |
457 | * bit 1 - refers to the upper 32-byte half cacheline | |
458 | */ | |
459 | static ssize_t i7core_inject_section_store(struct mem_ctl_info *mci, | |
460 | const char *data, size_t count) | |
461 | { | |
462 | struct i7core_pvt *pvt = mci->pvt_info; | |
463 | unsigned long value; | |
464 | int rc; | |
465 | ||
466 | if (pvt->inject.enable) | |
467 | disable_inject(mci); | |
468 | ||
469 | rc = strict_strtoul(data, 10, &value); | |
470 | if ((rc < 0) || (value > 3)) | |
471 | return 0; | |
472 | ||
473 | pvt->inject.section = (u32) value; | |
474 | return count; | |
475 | } | |
476 | ||
477 | static ssize_t i7core_inject_section_show(struct mem_ctl_info *mci, | |
478 | char *data) | |
479 | { | |
480 | struct i7core_pvt *pvt = mci->pvt_info; | |
481 | return sprintf(data, "0x%08x\n", pvt->inject.section); | |
482 | } | |
483 | ||
484 | /* | |
485 | * i7core inject.type | |
486 | * | |
487 | * accept and store error injection inject.section value | |
488 | * bit 0 - repeat enable - Enable error repetition | |
489 | * bit 1 - inject ECC error | |
490 | * bit 2 - inject parity error | |
491 | */ | |
492 | static ssize_t i7core_inject_type_store(struct mem_ctl_info *mci, | |
493 | const char *data, size_t count) | |
494 | { | |
495 | struct i7core_pvt *pvt = mci->pvt_info; | |
496 | unsigned long value; | |
497 | int rc; | |
498 | ||
499 | if (pvt->inject.enable) | |
500 | disable_inject(mci); | |
501 | ||
502 | rc = strict_strtoul(data, 10, &value); | |
503 | if ((rc < 0) || (value > 7)) | |
504 | return 0; | |
505 | ||
506 | pvt->inject.type = (u32) value; | |
507 | return count; | |
508 | } | |
509 | ||
510 | static ssize_t i7core_inject_type_show(struct mem_ctl_info *mci, | |
511 | char *data) | |
512 | { | |
513 | struct i7core_pvt *pvt = mci->pvt_info; | |
514 | return sprintf(data, "0x%08x\n", pvt->inject.type); | |
515 | } | |
516 | ||
517 | /* | |
518 | * i7core_inject_inject.eccmask_store | |
519 | * | |
520 | * The type of error (UE/CE) will depend on the inject.eccmask value: | |
521 | * Any bits set to a 1 will flip the corresponding ECC bit | |
522 | * Correctable errors can be injected by flipping 1 bit or the bits within | |
523 | * a symbol pair (2 consecutive aligned 8-bit pairs - i.e. 7:0 and 15:8 or | |
524 | * 23:16 and 31:24). Flipping bits in two symbol pairs will cause an | |
525 | * uncorrectable error to be injected. | |
526 | */ | |
527 | static ssize_t i7core_inject_eccmask_store(struct mem_ctl_info *mci, | |
528 | const char *data, size_t count) | |
529 | { | |
530 | struct i7core_pvt *pvt = mci->pvt_info; | |
531 | unsigned long value; | |
532 | int rc; | |
533 | ||
534 | if (pvt->inject.enable) | |
535 | disable_inject(mci); | |
536 | ||
537 | rc = strict_strtoul(data, 10, &value); | |
538 | if (rc < 0) | |
539 | return 0; | |
540 | ||
541 | pvt->inject.eccmask = (u32) value; | |
542 | return count; | |
543 | } | |
544 | ||
545 | static ssize_t i7core_inject_eccmask_show(struct mem_ctl_info *mci, | |
546 | char *data) | |
547 | { | |
548 | struct i7core_pvt *pvt = mci->pvt_info; | |
549 | return sprintf(data, "0x%08x\n", pvt->inject.eccmask); | |
550 | } | |
551 | ||
552 | /* | |
553 | * i7core_addrmatch | |
554 | * | |
555 | * The type of error (UE/CE) will depend on the inject.eccmask value: | |
556 | * Any bits set to a 1 will flip the corresponding ECC bit | |
557 | * Correctable errors can be injected by flipping 1 bit or the bits within | |
558 | * a symbol pair (2 consecutive aligned 8-bit pairs - i.e. 7:0 and 15:8 or | |
559 | * 23:16 and 31:24). Flipping bits in two symbol pairs will cause an | |
560 | * uncorrectable error to be injected. | |
561 | */ | |
562 | static ssize_t i7core_inject_addrmatch_store(struct mem_ctl_info *mci, | |
563 | const char *data, size_t count) | |
564 | { | |
565 | struct i7core_pvt *pvt = mci->pvt_info; | |
566 | char *cmd, *val; | |
567 | long value; | |
568 | int rc; | |
569 | ||
570 | if (pvt->inject.enable) | |
571 | disable_inject(mci); | |
572 | ||
573 | do { | |
574 | cmd = strsep((char **) &data, ":"); | |
575 | if (!cmd) | |
576 | break; | |
577 | val = strsep((char **) &data, " \n\t"); | |
578 | if (!val) | |
579 | return cmd - data; | |
580 | ||
581 | if (!strcasecmp(val,"any")) | |
582 | value = -1; | |
583 | else { | |
584 | rc = strict_strtol(val, 10, &value); | |
585 | if ((rc < 0) || (value < 0)) | |
586 | return cmd - data; | |
587 | } | |
588 | ||
589 | if (!strcasecmp(cmd,"channel")) { | |
590 | if (value < 3) | |
591 | pvt->inject.channel = value; | |
592 | else | |
593 | return cmd - data; | |
594 | } else if (!strcasecmp(cmd,"dimm")) { | |
595 | if (value < 4) | |
596 | pvt->inject.dimm = value; | |
597 | else | |
598 | return cmd - data; | |
599 | } else if (!strcasecmp(cmd,"rank")) { | |
600 | if (value < 4) | |
601 | pvt->inject.rank = value; | |
602 | else | |
603 | return cmd - data; | |
604 | } else if (!strcasecmp(cmd,"bank")) { | |
605 | if (value < 4) | |
606 | pvt->inject.bank = value; | |
607 | else | |
608 | return cmd - data; | |
609 | } else if (!strcasecmp(cmd,"page")) { | |
610 | if (value <= 0xffff) | |
611 | pvt->inject.page = value; | |
612 | else | |
613 | return cmd - data; | |
614 | } else if (!strcasecmp(cmd,"col") || | |
615 | !strcasecmp(cmd,"column")) { | |
616 | if (value <= 0x3fff) | |
617 | pvt->inject.col = value; | |
618 | else | |
619 | return cmd - data; | |
620 | } | |
621 | } while (1); | |
622 | ||
623 | return count; | |
624 | } | |
625 | ||
626 | static ssize_t i7core_inject_addrmatch_show(struct mem_ctl_info *mci, | |
627 | char *data) | |
628 | { | |
629 | struct i7core_pvt *pvt = mci->pvt_info; | |
630 | char channel[4], dimm[4], bank[4], rank[4], page[7], col[7]; | |
631 | ||
632 | if (pvt->inject.channel < 0) | |
633 | sprintf(channel, "any"); | |
634 | else | |
635 | sprintf(channel, "%d", pvt->inject.channel); | |
636 | if (pvt->inject.dimm < 0) | |
637 | sprintf(dimm, "any"); | |
638 | else | |
639 | sprintf(dimm, "%d", pvt->inject.dimm); | |
640 | if (pvt->inject.bank < 0) | |
641 | sprintf(bank, "any"); | |
642 | else | |
643 | sprintf(bank, "%d", pvt->inject.bank); | |
644 | if (pvt->inject.rank < 0) | |
645 | sprintf(rank, "any"); | |
646 | else | |
647 | sprintf(rank, "%d", pvt->inject.rank); | |
648 | if (pvt->inject.page < 0) | |
649 | sprintf(page, "any"); | |
650 | else | |
651 | sprintf(page, "0x%04x", pvt->inject.page); | |
652 | if (pvt->inject.col < 0) | |
653 | sprintf(col, "any"); | |
654 | else | |
655 | sprintf(col, "0x%04x", pvt->inject.col); | |
656 | ||
657 | return sprintf(data, "channel: %s\ndimm: %s\nbank: %s\n" | |
658 | "rank: %s\npage: %s\ncolumn: %s\n", | |
659 | channel, dimm, bank, rank, page, col); | |
660 | } | |
661 | ||
662 | /* | |
663 | * This routine prepares the Memory Controller for error injection. | |
664 | * The error will be injected when some process tries to write to the | |
665 | * memory that matches the given criteria. | |
666 | * The criteria can be set in terms of a mask where dimm, rank, bank, page | |
667 | * and col can be specified. | |
668 | * A -1 value for any of the mask items will make the MCU to ignore | |
669 | * that matching criteria for error injection. | |
670 | * | |
671 | * It should be noticed that the error will only happen after a write operation | |
672 | * on a memory that matches the condition. if REPEAT_EN is not enabled at | |
673 | * inject mask, then it will produce just one error. Otherwise, it will repeat | |
674 | * until the injectmask would be cleaned. | |
675 | * | |
676 | * FIXME: This routine assumes that MAXNUMDIMMS value of MC_MAX_DOD | |
677 | * is reliable enough to check if the MC is using the | |
678 | * three channels. However, this is not clear at the datasheet. | |
679 | */ | |
680 | static ssize_t i7core_inject_enable_store(struct mem_ctl_info *mci, | |
681 | const char *data, size_t count) | |
682 | { | |
683 | struct i7core_pvt *pvt = mci->pvt_info; | |
684 | u32 injectmask; | |
685 | u64 mask = 0; | |
686 | int rc; | |
687 | long enable; | |
688 | ||
8f331907 MCC |
689 | if (!pvt->pci_ch[pvt->inject.channel][0]) |
690 | return 0; | |
691 | ||
194a40fe MCC |
692 | rc = strict_strtoul(data, 10, &enable); |
693 | if ((rc < 0)) | |
694 | return 0; | |
695 | ||
696 | if (enable) { | |
697 | pvt->inject.enable = 1; | |
698 | } else { | |
699 | disable_inject(mci); | |
700 | return count; | |
701 | } | |
702 | ||
703 | /* Sets pvt->inject.dimm mask */ | |
704 | if (pvt->inject.dimm < 0) | |
7b029d03 | 705 | mask |= 1L << 41; |
194a40fe | 706 | else { |
0b2b7b7e | 707 | if (pvt->channel[pvt->inject.channel].dimms > 2) |
7b029d03 | 708 | mask |= (pvt->inject.dimm & 0x3L) << 35; |
194a40fe | 709 | else |
7b029d03 | 710 | mask |= (pvt->inject.dimm & 0x1L) << 36; |
194a40fe MCC |
711 | } |
712 | ||
713 | /* Sets pvt->inject.rank mask */ | |
714 | if (pvt->inject.rank < 0) | |
7b029d03 | 715 | mask |= 1L << 40; |
194a40fe | 716 | else { |
0b2b7b7e | 717 | if (pvt->channel[pvt->inject.channel].dimms > 2) |
7b029d03 | 718 | mask |= (pvt->inject.rank & 0x1L) << 34; |
194a40fe | 719 | else |
7b029d03 | 720 | mask |= (pvt->inject.rank & 0x3L) << 34; |
194a40fe MCC |
721 | } |
722 | ||
723 | /* Sets pvt->inject.bank mask */ | |
724 | if (pvt->inject.bank < 0) | |
7b029d03 | 725 | mask |= 1L << 39; |
194a40fe | 726 | else |
7b029d03 | 727 | mask |= (pvt->inject.bank & 0x15L) << 30; |
194a40fe MCC |
728 | |
729 | /* Sets pvt->inject.page mask */ | |
730 | if (pvt->inject.page < 0) | |
7b029d03 | 731 | mask |= 1L << 38; |
194a40fe | 732 | else |
7b029d03 | 733 | mask |= (pvt->inject.page & 0xffffL) << 14; |
194a40fe MCC |
734 | |
735 | /* Sets pvt->inject.column mask */ | |
736 | if (pvt->inject.col < 0) | |
7b029d03 | 737 | mask |= 1L << 37; |
194a40fe | 738 | else |
7b029d03 | 739 | mask |= (pvt->inject.col & 0x3fffL); |
194a40fe | 740 | |
7b029d03 | 741 | #if USE_QWORD |
194a40fe MCC |
742 | pci_write_config_qword(pvt->pci_ch[pvt->inject.channel][0], |
743 | MC_CHANNEL_ADDR_MATCH, mask); | |
7b029d03 MCC |
744 | #else |
745 | pci_write_config_dword(pvt->pci_ch[pvt->inject.channel][0], | |
746 | MC_CHANNEL_ADDR_MATCH, mask); | |
747 | pci_write_config_dword(pvt->pci_ch[pvt->inject.channel][0], | |
748 | MC_CHANNEL_ADDR_MATCH + 4, mask >> 32L); | |
749 | #endif | |
750 | ||
751 | #if 1 | |
752 | #if USE_QWORD | |
753 | u64 rdmask; | |
754 | pci_read_config_qword(pvt->pci_ch[pvt->inject.channel][0], | |
755 | MC_CHANNEL_ADDR_MATCH, &rdmask); | |
756 | debugf0("Inject addr match write 0x%016llx, read: 0x%016llx\n", | |
757 | mask, rdmask); | |
758 | #else | |
759 | u32 rdmask1, rdmask2; | |
760 | ||
761 | pci_read_config_dword(pvt->pci_ch[pvt->inject.channel][0], | |
762 | MC_CHANNEL_ADDR_MATCH, &rdmask1); | |
763 | pci_read_config_dword(pvt->pci_ch[pvt->inject.channel][0], | |
764 | MC_CHANNEL_ADDR_MATCH + 4, &rdmask2); | |
765 | ||
766 | debugf0("Inject addr match write 0x%016llx, read: 0x%08x%08x\n", | |
767 | mask, rdmask1, rdmask2); | |
768 | #endif | |
769 | #endif | |
194a40fe MCC |
770 | |
771 | pci_write_config_dword(pvt->pci_ch[pvt->inject.channel][0], | |
772 | MC_CHANNEL_ERROR_MASK, pvt->inject.eccmask); | |
773 | ||
774 | /* | |
775 | * bit 0: REPEAT_EN | |
776 | * bits 1-2: MASK_HALF_CACHELINE | |
777 | * bit 3: INJECT_ECC | |
778 | * bit 4: INJECT_ADDR_PARITY | |
779 | */ | |
780 | ||
7b029d03 MCC |
781 | injectmask = (pvt->inject.type & 1) | |
782 | (pvt->inject.section & 0x3) << 1 | | |
194a40fe MCC |
783 | (pvt->inject.type & 0x6) << (3 - 1); |
784 | ||
785 | pci_write_config_dword(pvt->pci_ch[pvt->inject.channel][0], | |
786 | MC_CHANNEL_ERROR_MASK, injectmask); | |
787 | ||
194a40fe MCC |
788 | debugf0("Error inject addr match 0x%016llx, ecc 0x%08x, inject 0x%08x\n", |
789 | mask, pvt->inject.eccmask, injectmask); | |
790 | ||
7b029d03 MCC |
791 | |
792 | ||
194a40fe MCC |
793 | return count; |
794 | } | |
795 | ||
796 | static ssize_t i7core_inject_enable_show(struct mem_ctl_info *mci, | |
797 | char *data) | |
798 | { | |
799 | struct i7core_pvt *pvt = mci->pvt_info; | |
7b029d03 MCC |
800 | u32 injectmask; |
801 | ||
802 | pci_read_config_dword(pvt->pci_ch[pvt->inject.channel][0], | |
803 | MC_CHANNEL_ERROR_MASK, &injectmask); | |
804 | ||
805 | debugf0("Inject error read: 0x%018x\n", injectmask); | |
806 | ||
807 | if (injectmask & 0x0c) | |
808 | pvt->inject.enable = 1; | |
809 | ||
194a40fe MCC |
810 | return sprintf(data, "%d\n", pvt->inject.enable); |
811 | } | |
812 | ||
442305b1 MCC |
813 | static ssize_t i7core_ce_regs_show(struct mem_ctl_info *mci, char *data) |
814 | { | |
815 | struct i7core_pvt *pvt = mci->pvt_info; | |
816 | ||
817 | if (!pvt->ce_count_available) | |
818 | return sprintf(data, "unavailable\n"); | |
819 | ||
820 | return sprintf(data, "dimm0: %lu\ndimm1: %lu\ndimm2: %lu\n", | |
821 | pvt->ce_count[0], | |
822 | pvt->ce_count[1], | |
823 | pvt->ce_count[2]); | |
824 | } | |
825 | ||
194a40fe MCC |
826 | /* |
827 | * Sysfs struct | |
828 | */ | |
829 | static struct mcidev_sysfs_attribute i7core_inj_attrs[] = { | |
830 | ||
831 | { | |
832 | .attr = { | |
833 | .name = "inject_section", | |
834 | .mode = (S_IRUGO | S_IWUSR) | |
835 | }, | |
836 | .show = i7core_inject_section_show, | |
837 | .store = i7core_inject_section_store, | |
838 | }, { | |
839 | .attr = { | |
840 | .name = "inject_type", | |
841 | .mode = (S_IRUGO | S_IWUSR) | |
842 | }, | |
843 | .show = i7core_inject_type_show, | |
844 | .store = i7core_inject_type_store, | |
845 | }, { | |
846 | .attr = { | |
847 | .name = "inject_eccmask", | |
848 | .mode = (S_IRUGO | S_IWUSR) | |
849 | }, | |
850 | .show = i7core_inject_eccmask_show, | |
851 | .store = i7core_inject_eccmask_store, | |
852 | }, { | |
853 | .attr = { | |
854 | .name = "inject_addrmatch", | |
855 | .mode = (S_IRUGO | S_IWUSR) | |
856 | }, | |
857 | .show = i7core_inject_addrmatch_show, | |
858 | .store = i7core_inject_addrmatch_store, | |
859 | }, { | |
860 | .attr = { | |
861 | .name = "inject_enable", | |
862 | .mode = (S_IRUGO | S_IWUSR) | |
863 | }, | |
864 | .show = i7core_inject_enable_show, | |
865 | .store = i7core_inject_enable_store, | |
442305b1 MCC |
866 | }, { |
867 | .attr = { | |
868 | .name = "corrected_error_counts", | |
869 | .mode = (S_IRUGO | S_IWUSR) | |
870 | }, | |
871 | .show = i7core_ce_regs_show, | |
872 | .store = NULL, | |
194a40fe MCC |
873 | }, |
874 | }; | |
875 | ||
a0c36a1f MCC |
876 | /**************************************************************************** |
877 | Device initialization routines: put/get, init/exit | |
878 | ****************************************************************************/ | |
879 | ||
880 | /* | |
881 | * i7core_put_devices 'put' all the devices that we have | |
882 | * reserved via 'get' | |
883 | */ | |
8f331907 | 884 | static void i7core_put_devices(void) |
a0c36a1f | 885 | { |
8f331907 | 886 | int i; |
a0c36a1f | 887 | |
8f331907 MCC |
888 | for (i = 0; i < N_DEVS; i++) |
889 | pci_dev_put(pci_devs[i].pdev); | |
a0c36a1f MCC |
890 | } |
891 | ||
892 | /* | |
893 | * i7core_get_devices Find and perform 'get' operation on the MCH's | |
894 | * device/functions we want to reference for this driver | |
895 | * | |
896 | * Need to 'get' device 16 func 1 and func 2 | |
897 | */ | |
ef708b53 | 898 | static int i7core_get_devices(void) |
a0c36a1f | 899 | { |
ef708b53 | 900 | int rc, i; |
8f331907 | 901 | struct pci_dev *pdev = NULL; |
a0c36a1f | 902 | |
8f331907 MCC |
903 | for (i = 0; i < N_DEVS; i++) { |
904 | pdev = pci_get_device(PCI_VENDOR_ID_INTEL, | |
905 | pci_devs[i].dev_id, NULL); | |
ef708b53 MCC |
906 | if (likely(pdev)) |
907 | pci_devs[i].pdev = pdev; | |
908 | else { | |
8f331907 MCC |
909 | i7core_printk(KERN_ERR, |
910 | "Device not found: PCI ID %04x:%04x " | |
911 | "(dev %d, func %d)\n", | |
912 | PCI_VENDOR_ID_INTEL, pci_devs[i].dev_id, | |
913 | pci_devs[i].dev,pci_devs[i].func); | |
ef708b53 MCC |
914 | |
915 | /* Dev 3 function 2 only exists on chips with RDIMMs */ | |
8f331907 | 916 | if ((pci_devs[i].dev == 3) && (pci_devs[i].func == 2)) |
ef708b53 MCC |
917 | continue; |
918 | ||
919 | /* End of list, leave */ | |
920 | rc = -ENODEV; | |
921 | goto error; | |
8f331907 | 922 | } |
8f331907 | 923 | |
ef708b53 MCC |
924 | /* Sanity check */ |
925 | if (unlikely(PCI_SLOT(pdev->devfn) != pci_devs[i].dev || | |
926 | PCI_FUNC(pdev->devfn) != pci_devs[i].func)) { | |
8f331907 | 927 | i7core_printk(KERN_ERR, |
ef708b53 MCC |
928 | "Device PCI ID %04x:%04x " |
929 | "has fn %d.%d instead of fn %d.%d\n", | |
8f331907 | 930 | PCI_VENDOR_ID_INTEL, pci_devs[i].dev_id, |
ef708b53 | 931 | PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), |
8f331907 | 932 | pci_devs[i].dev, pci_devs[i].func); |
ef708b53 MCC |
933 | rc = -EINVAL; |
934 | goto error; | |
8f331907 | 935 | } |
ef708b53 MCC |
936 | |
937 | /* Be sure that the device is enabled */ | |
938 | rc = pci_enable_device(pdev); | |
939 | if (unlikely(rc < 0)) { | |
8f331907 | 940 | i7core_printk(KERN_ERR, |
ef708b53 MCC |
941 | "Couldn't enable PCI ID %04x:%04x " |
942 | "fn %d.%d\n", | |
8f331907 | 943 | PCI_VENDOR_ID_INTEL, pci_devs[i].dev_id, |
ef708b53 MCC |
944 | PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); |
945 | goto error; | |
8f331907 | 946 | } |
a0c36a1f | 947 | |
8f331907 | 948 | i7core_printk(KERN_INFO, |
ef708b53 | 949 | "Registered device %0x:%0x fn %d.%d\n", |
8f331907 MCC |
950 | PCI_VENDOR_ID_INTEL, pci_devs[i].dev_id, |
951 | PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn)); | |
ef708b53 MCC |
952 | } |
953 | ||
954 | return 0; | |
955 | ||
956 | error: | |
957 | i7core_put_devices(); | |
958 | return -EINVAL; | |
959 | } | |
960 | ||
961 | static int mci_bind_devs(struct mem_ctl_info *mci) | |
962 | { | |
963 | struct i7core_pvt *pvt = mci->pvt_info; | |
964 | struct pci_dev *pdev; | |
965 | int i, func, slot; | |
966 | ||
967 | for (i = 0; i < N_DEVS; i++) { | |
968 | pdev = pci_devs[i].pdev; | |
969 | if (!pdev) | |
970 | continue; | |
8f331907 MCC |
971 | |
972 | func = PCI_FUNC(pdev->devfn); | |
ef708b53 MCC |
973 | slot = PCI_SLOT(pdev->devfn); |
974 | if (slot == 3) { | |
975 | if (unlikely(func > MAX_MCR_FUNC)) | |
976 | goto error; | |
8f331907 | 977 | pvt->pci_mcr[func] = pdev; |
ef708b53 MCC |
978 | } else if (likely(slot >= 4 && slot < 4 + NUM_CHANS)) { |
979 | if (unlikely(func > MAX_CHAN_FUNC)) | |
980 | goto error; | |
981 | pvt->pci_ch[slot - 4][func] = pdev; | |
982 | } else | |
983 | goto error; | |
984 | ||
985 | debugf0("Associated fn %d.%d, dev = %p\n", | |
986 | PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn), pdev); | |
a0c36a1f | 987 | } |
a0c36a1f | 988 | return 0; |
ef708b53 MCC |
989 | |
990 | error: | |
991 | i7core_printk(KERN_ERR, "Device %d, function %d " | |
992 | "is out of the expected range\n", | |
993 | slot, func); | |
994 | return -EINVAL; | |
a0c36a1f MCC |
995 | } |
996 | ||
442305b1 MCC |
997 | /**************************************************************************** |
998 | Error check routines | |
999 | ****************************************************************************/ | |
1000 | ||
1001 | /* This function is based on the device 3 function 4 registers as described on: | |
1002 | * Intel Xeon Processor 5500 Series Datasheet Volume 2 | |
1003 | * http://www.intel.com/Assets/PDF/datasheet/321322.pdf | |
1004 | * also available at: | |
1005 | * http://www.arrownac.com/manufacturers/intel/s/nehalem/5500-datasheet-v2.pdf | |
1006 | */ | |
1007 | static void check_mc_test_err(struct mem_ctl_info *mci) | |
1008 | { | |
1009 | struct i7core_pvt *pvt = mci->pvt_info; | |
1010 | u32 rcv1, rcv0; | |
1011 | int new0, new1, new2; | |
1012 | ||
1013 | if (!pvt->pci_mcr[4]) { | |
1014 | debugf0("%s MCR registers not found\n",__func__); | |
1015 | return; | |
1016 | } | |
1017 | ||
1018 | /* Corrected error reads */ | |
1019 | pci_read_config_dword(pvt->pci_mcr[4], MC_TEST_ERR_RCV1, &rcv1); | |
1020 | pci_read_config_dword(pvt->pci_mcr[4], MC_TEST_ERR_RCV0, &rcv0); | |
1021 | ||
1022 | /* Store the new values */ | |
1023 | new2 = DIMM2_COR_ERR(rcv1); | |
1024 | new1 = DIMM1_COR_ERR(rcv0); | |
1025 | new0 = DIMM0_COR_ERR(rcv0); | |
1026 | ||
1027 | debugf2("%s CE rcv1=0x%08x rcv0=0x%08x, %d %d %d\n", | |
1028 | (pvt->ce_count_available ? "UPDATE" : "READ"), | |
1029 | rcv1, rcv0, new0, new1, new2); | |
1030 | ||
1031 | /* Updates CE counters if it is not the first time here */ | |
1032 | if (pvt->ce_count_available) { | |
1033 | /* Updates CE counters */ | |
1034 | int add0, add1, add2; | |
1035 | ||
1036 | add2 = new2 - pvt->last_ce_count[2]; | |
1037 | add1 = new1 - pvt->last_ce_count[1]; | |
1038 | add0 = new0 - pvt->last_ce_count[0]; | |
1039 | ||
1040 | if (add2 < 0) | |
1041 | add2 += 0x7fff; | |
1042 | pvt->ce_count[2] += add2; | |
1043 | ||
1044 | if (add1 < 0) | |
1045 | add1 += 0x7fff; | |
1046 | pvt->ce_count[1] += add1; | |
1047 | ||
1048 | if (add0 < 0) | |
1049 | add0 += 0x7fff; | |
1050 | pvt->ce_count[0] += add0; | |
1051 | } else | |
1052 | pvt->ce_count_available = 1; | |
1053 | ||
1054 | /* Store the new values */ | |
1055 | pvt->last_ce_count[2] = new2; | |
1056 | pvt->last_ce_count[1] = new1; | |
1057 | pvt->last_ce_count[0] = new0; | |
1058 | } | |
1059 | ||
87d1d272 MCC |
1060 | /* |
1061 | * i7core_check_error Retrieve and process errors reported by the | |
1062 | * hardware. Called by the Core module. | |
1063 | */ | |
1064 | static void i7core_check_error(struct mem_ctl_info *mci) | |
1065 | { | |
442305b1 | 1066 | check_mc_test_err(mci); |
87d1d272 MCC |
1067 | } |
1068 | ||
a0c36a1f MCC |
1069 | /* |
1070 | * i7core_probe Probe for ONE instance of device to see if it is | |
1071 | * present. | |
1072 | * return: | |
1073 | * 0 for FOUND a device | |
1074 | * < 0 for error code | |
1075 | */ | |
1076 | static int __devinit i7core_probe(struct pci_dev *pdev, | |
1077 | const struct pci_device_id *id) | |
1078 | { | |
1079 | struct mem_ctl_info *mci; | |
1080 | struct i7core_pvt *pvt; | |
ef708b53 | 1081 | int num_channels = 0; |
a0c36a1f | 1082 | int num_csrows; |
a0c36a1f MCC |
1083 | int dev_idx = id->driver_data; |
1084 | ||
ef708b53 | 1085 | if (unlikely(dev_idx >= ARRAY_SIZE(i7core_devs))) |
a0c36a1f MCC |
1086 | return -EINVAL; |
1087 | ||
ef708b53 MCC |
1088 | /* get the pci devices we want to reserve for our use */ |
1089 | if (unlikely(i7core_get_devices() < 0)) | |
1090 | return -ENODEV; | |
1091 | ||
1092 | /* Check the number of active and not disabled channels */ | |
1093 | if (unlikely (i7core_get_active_channels(&num_channels)) < 0) | |
1094 | goto fail0; | |
a0c36a1f | 1095 | |
ef708b53 MCC |
1096 | /* FIXME: we currently don't know the number of csrows */ |
1097 | num_csrows = num_channels; | |
a0c36a1f MCC |
1098 | |
1099 | /* allocate a new MC control structure */ | |
1100 | mci = edac_mc_alloc(sizeof(*pvt), num_csrows, num_channels, 0); | |
ef708b53 | 1101 | if (unlikely (!mci)) |
a0c36a1f MCC |
1102 | return -ENOMEM; |
1103 | ||
1104 | debugf0("MC: " __FILE__ ": %s(): mci = %p\n", __func__, mci); | |
1105 | ||
194a40fe | 1106 | mci->dev = &pdev->dev; /* record ptr to the generic device */ |
a0c36a1f MCC |
1107 | |
1108 | pvt = mci->pvt_info; | |
ef708b53 | 1109 | memset(pvt, 0, sizeof(*pvt)); |
a0c36a1f | 1110 | |
a0c36a1f | 1111 | mci->mc_idx = 0; |
ef708b53 | 1112 | mci->mtype_cap = MEM_FLAG_DDR3; /* FIXME: how to handle RDDR3? */ |
a0c36a1f MCC |
1113 | mci->edac_ctl_cap = EDAC_FLAG_NONE; |
1114 | mci->edac_cap = EDAC_FLAG_NONE; | |
1115 | mci->mod_name = "i7core_edac.c"; | |
1116 | mci->mod_ver = I7CORE_REVISION; | |
1117 | mci->ctl_name = i7core_devs[dev_idx].ctl_name; | |
1118 | mci->dev_name = pci_name(pdev); | |
1119 | mci->ctl_page_to_phys = NULL; | |
194a40fe | 1120 | mci->mc_driver_sysfs_attributes = i7core_inj_attrs; |
87d1d272 MCC |
1121 | /* Set the function pointer to an actual operation function */ |
1122 | mci->edac_check = i7core_check_error; | |
8f331907 | 1123 | |
ef708b53 MCC |
1124 | /* Store pci devices at mci for faster access */ |
1125 | if (unlikely (mci_bind_devs(mci)) < 0) | |
1126 | goto fail1; | |
1127 | ||
1128 | /* Get dimm basic config */ | |
1129 | get_dimm_config(mci); | |
1130 | ||
a0c36a1f | 1131 | /* add this new MC control structure to EDAC's list of MCs */ |
ef708b53 | 1132 | if (unlikely(edac_mc_add_mc(mci)) < 0) { |
a0c36a1f MCC |
1133 | debugf0("MC: " __FILE__ |
1134 | ": %s(): failed edac_mc_add_mc()\n", __func__); | |
1135 | /* FIXME: perhaps some code should go here that disables error | |
1136 | * reporting if we just enabled it | |
1137 | */ | |
1138 | goto fail1; | |
1139 | } | |
1140 | ||
1141 | /* allocating generic PCI control info */ | |
1142 | i7core_pci = edac_pci_create_generic_ctl(&pdev->dev, EDAC_MOD_STR); | |
ef708b53 | 1143 | if (unlikely (!i7core_pci)) { |
a0c36a1f MCC |
1144 | printk(KERN_WARNING |
1145 | "%s(): Unable to create PCI control\n", | |
1146 | __func__); | |
1147 | printk(KERN_WARNING | |
1148 | "%s(): PCI error report via EDAC not setup\n", | |
1149 | __func__); | |
1150 | } | |
1151 | ||
194a40fe | 1152 | /* Default error mask is any memory */ |
ef708b53 | 1153 | pvt->inject.channel = 0; |
194a40fe MCC |
1154 | pvt->inject.dimm = -1; |
1155 | pvt->inject.rank = -1; | |
1156 | pvt->inject.bank = -1; | |
1157 | pvt->inject.page = -1; | |
1158 | pvt->inject.col = -1; | |
1159 | ||
ef708b53 | 1160 | i7core_printk(KERN_INFO, "Driver loaded.\n"); |
8f331907 | 1161 | |
a0c36a1f MCC |
1162 | return 0; |
1163 | ||
1164 | fail1: | |
8f331907 | 1165 | i7core_put_devices(); |
a0c36a1f MCC |
1166 | |
1167 | fail0: | |
1168 | edac_mc_free(mci); | |
1169 | return -ENODEV; | |
1170 | } | |
1171 | ||
1172 | /* | |
1173 | * i7core_remove destructor for one instance of device | |
1174 | * | |
1175 | */ | |
1176 | static void __devexit i7core_remove(struct pci_dev *pdev) | |
1177 | { | |
1178 | struct mem_ctl_info *mci; | |
1179 | ||
1180 | debugf0(__FILE__ ": %s()\n", __func__); | |
1181 | ||
1182 | if (i7core_pci) | |
1183 | edac_pci_release_generic_ctl(i7core_pci); | |
1184 | ||
1185 | mci = edac_mc_del_mc(&pdev->dev); | |
87d1d272 | 1186 | |
a0c36a1f MCC |
1187 | if (!mci) |
1188 | return; | |
1189 | ||
1190 | /* retrieve references to resources, and free those resources */ | |
8f331907 | 1191 | i7core_put_devices(); |
a0c36a1f MCC |
1192 | |
1193 | edac_mc_free(mci); | |
1194 | } | |
1195 | ||
a0c36a1f MCC |
1196 | MODULE_DEVICE_TABLE(pci, i7core_pci_tbl); |
1197 | ||
1198 | /* | |
1199 | * i7core_driver pci_driver structure for this module | |
1200 | * | |
1201 | */ | |
1202 | static struct pci_driver i7core_driver = { | |
1203 | .name = "i7core_edac", | |
1204 | .probe = i7core_probe, | |
1205 | .remove = __devexit_p(i7core_remove), | |
1206 | .id_table = i7core_pci_tbl, | |
1207 | }; | |
1208 | ||
1209 | /* | |
1210 | * i7core_init Module entry function | |
1211 | * Try to initialize this module for its devices | |
1212 | */ | |
1213 | static int __init i7core_init(void) | |
1214 | { | |
1215 | int pci_rc; | |
1216 | ||
1217 | debugf2("MC: " __FILE__ ": %s()\n", __func__); | |
1218 | ||
1219 | /* Ensure that the OPSTATE is set correctly for POLL or NMI */ | |
1220 | opstate_init(); | |
1221 | ||
1222 | pci_rc = pci_register_driver(&i7core_driver); | |
1223 | ||
1224 | return (pci_rc < 0) ? pci_rc : 0; | |
1225 | } | |
1226 | ||
1227 | /* | |
1228 | * i7core_exit() Module exit function | |
1229 | * Unregister the driver | |
1230 | */ | |
1231 | static void __exit i7core_exit(void) | |
1232 | { | |
1233 | debugf2("MC: " __FILE__ ": %s()\n", __func__); | |
1234 | pci_unregister_driver(&i7core_driver); | |
1235 | } | |
1236 | ||
1237 | module_init(i7core_init); | |
1238 | module_exit(i7core_exit); | |
1239 | ||
1240 | MODULE_LICENSE("GPL"); | |
1241 | MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>"); | |
1242 | MODULE_AUTHOR("Red Hat Inc. (http://www.redhat.com)"); | |
1243 | MODULE_DESCRIPTION("MC Driver for Intel i7 Core memory controllers - " | |
1244 | I7CORE_REVISION); | |
1245 | ||
1246 | module_param(edac_op_state, int, 0444); | |
1247 | MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll,1=NMI"); |