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8f421c59 AJ |
1 | /* |
2 | * Intel 5100 Memory Controllers kernel module | |
3 | * | |
4 | * This file may be distributed under the terms of the | |
5 | * GNU General Public License. | |
6 | * | |
7 | * This module is based on the following document: | |
8 | * | |
9 | * Intel 5100X Chipset Memory Controller Hub (MCH) - Datasheet | |
10 | * http://download.intel.com/design/chipsets/datashts/318378.pdf | |
11 | * | |
bbead210 NC |
12 | * The intel 5100 has two independent channels. EDAC core currently |
13 | * can not reflect this configuration so instead the chip-select | |
25985edc | 14 | * rows for each respective channel are laid out one after another, |
bbead210 NC |
15 | * the first half belonging to channel 0, the second half belonging |
16 | * to channel 1. | |
d1afaa0a MCC |
17 | * |
18 | * This driver is for DDR2 DIMMs, and it uses chip select to select among the | |
19 | * several ranks. However, instead of showing memories as ranks, it outputs | |
20 | * them as DIMM's. An internal table creates the association between ranks | |
21 | * and DIMM's. | |
8f421c59 AJ |
22 | */ |
23 | #include <linux/module.h> | |
24 | #include <linux/init.h> | |
25 | #include <linux/pci.h> | |
26 | #include <linux/pci_ids.h> | |
8f421c59 AJ |
27 | #include <linux/edac.h> |
28 | #include <linux/delay.h> | |
29 | #include <linux/mmzone.h> | |
9cbc6d38 | 30 | #include <linux/debugfs.h> |
8f421c59 AJ |
31 | |
32 | #include "edac_core.h" | |
33 | ||
b238e577 | 34 | /* register addresses */ |
8f421c59 AJ |
35 | |
36 | /* device 16, func 1 */ | |
43920a59 | 37 | #define I5100_MC 0x40 /* Memory Control Register */ |
295439f2 NC |
38 | #define I5100_MC_SCRBEN_MASK (1 << 7) |
39 | #define I5100_MC_SCRBDONE_MASK (1 << 4) | |
8f421c59 AJ |
40 | #define I5100_MS 0x44 /* Memory Status Register */ |
41 | #define I5100_SPDDATA 0x48 /* Serial Presence Detect Status Reg */ | |
8f421c59 | 42 | #define I5100_SPDCMD 0x4c /* Serial Presence Detect Command Reg */ |
8f421c59 | 43 | #define I5100_TOLM 0x6c /* Top of Low Memory */ |
8f421c59 AJ |
44 | #define I5100_MIR0 0x80 /* Memory Interleave Range 0 */ |
45 | #define I5100_MIR1 0x84 /* Memory Interleave Range 1 */ | |
46 | #define I5100_AMIR_0 0x8c /* Adjusted Memory Interleave Range 0 */ | |
47 | #define I5100_AMIR_1 0x90 /* Adjusted Memory Interleave Range 1 */ | |
8f421c59 | 48 | #define I5100_FERR_NF_MEM 0xa0 /* MC First Non Fatal Errors */ |
8f421c59 AJ |
49 | #define I5100_FERR_NF_MEM_M16ERR_MASK (1 << 16) |
50 | #define I5100_FERR_NF_MEM_M15ERR_MASK (1 << 15) | |
51 | #define I5100_FERR_NF_MEM_M14ERR_MASK (1 << 14) | |
f7952ffc AJ |
52 | #define I5100_FERR_NF_MEM_M12ERR_MASK (1 << 12) |
53 | #define I5100_FERR_NF_MEM_M11ERR_MASK (1 << 11) | |
54 | #define I5100_FERR_NF_MEM_M10ERR_MASK (1 << 10) | |
55 | #define I5100_FERR_NF_MEM_M6ERR_MASK (1 << 6) | |
56 | #define I5100_FERR_NF_MEM_M5ERR_MASK (1 << 5) | |
57 | #define I5100_FERR_NF_MEM_M4ERR_MASK (1 << 4) | |
b6378cb3 | 58 | #define I5100_FERR_NF_MEM_M1ERR_MASK (1 << 1) |
8f421c59 AJ |
59 | #define I5100_FERR_NF_MEM_ANY_MASK \ |
60 | (I5100_FERR_NF_MEM_M16ERR_MASK | \ | |
61 | I5100_FERR_NF_MEM_M15ERR_MASK | \ | |
f7952ffc AJ |
62 | I5100_FERR_NF_MEM_M14ERR_MASK | \ |
63 | I5100_FERR_NF_MEM_M12ERR_MASK | \ | |
64 | I5100_FERR_NF_MEM_M11ERR_MASK | \ | |
65 | I5100_FERR_NF_MEM_M10ERR_MASK | \ | |
66 | I5100_FERR_NF_MEM_M6ERR_MASK | \ | |
67 | I5100_FERR_NF_MEM_M5ERR_MASK | \ | |
68 | I5100_FERR_NF_MEM_M4ERR_MASK | \ | |
69 | I5100_FERR_NF_MEM_M1ERR_MASK) | |
8f421c59 | 70 | #define I5100_NERR_NF_MEM 0xa4 /* MC Next Non-Fatal Errors */ |
178d5a74 | 71 | #define I5100_EMASK_MEM 0xa8 /* MC Error Mask Register */ |
53ceafd6 NS |
72 | #define I5100_MEM0EINJMSK0 0x200 /* Injection Mask0 Register Channel 0 */ |
73 | #define I5100_MEM1EINJMSK0 0x208 /* Injection Mask0 Register Channel 1 */ | |
74 | #define I5100_MEMXEINJMSK0_EINJEN (1 << 27) | |
75 | #define I5100_MEM0EINJMSK1 0x204 /* Injection Mask1 Register Channel 0 */ | |
76 | #define I5100_MEM1EINJMSK1 0x206 /* Injection Mask1 Register Channel 1 */ | |
77 | ||
78 | /* Device 19, Function 0 */ | |
79 | #define I5100_DINJ0 0x9a | |
8f421c59 AJ |
80 | |
81 | /* device 21 and 22, func 0 */ | |
82 | #define I5100_MTR_0 0x154 /* Memory Technology Registers 0-3 */ | |
83 | #define I5100_DMIR 0x15c /* DIMM Interleave Range */ | |
8f421c59 | 84 | #define I5100_VALIDLOG 0x18c /* Valid Log Markers */ |
8f421c59 | 85 | #define I5100_NRECMEMA 0x190 /* Non-Recoverable Memory Error Log Reg A */ |
8f421c59 | 86 | #define I5100_NRECMEMB 0x194 /* Non-Recoverable Memory Error Log Reg B */ |
8f421c59 | 87 | #define I5100_REDMEMA 0x198 /* Recoverable Memory Data Error Log Reg A */ |
8f421c59 | 88 | #define I5100_REDMEMB 0x19c /* Recoverable Memory Data Error Log Reg B */ |
8f421c59 | 89 | #define I5100_RECMEMA 0x1a0 /* Recoverable Memory Error Log Reg A */ |
8f421c59 | 90 | #define I5100_RECMEMB 0x1a4 /* Recoverable Memory Error Log Reg B */ |
b238e577 AJ |
91 | #define I5100_MTR_4 0x1b0 /* Memory Technology Registers 4,5 */ |
92 | ||
93 | /* bit field accessors */ | |
94 | ||
295439f2 NC |
95 | static inline u32 i5100_mc_scrben(u32 mc) |
96 | { | |
97 | return mc >> 7 & 1; | |
98 | } | |
99 | ||
b238e577 AJ |
100 | static inline u32 i5100_mc_errdeten(u32 mc) |
101 | { | |
102 | return mc >> 5 & 1; | |
103 | } | |
104 | ||
295439f2 NC |
105 | static inline u32 i5100_mc_scrbdone(u32 mc) |
106 | { | |
107 | return mc >> 4 & 1; | |
108 | } | |
109 | ||
b238e577 AJ |
110 | static inline u16 i5100_spddata_rdo(u16 a) |
111 | { | |
112 | return a >> 15 & 1; | |
113 | } | |
114 | ||
115 | static inline u16 i5100_spddata_sbe(u16 a) | |
116 | { | |
117 | return a >> 13 & 1; | |
118 | } | |
119 | ||
120 | static inline u16 i5100_spddata_busy(u16 a) | |
121 | { | |
122 | return a >> 12 & 1; | |
123 | } | |
124 | ||
125 | static inline u16 i5100_spddata_data(u16 a) | |
126 | { | |
127 | return a & ((1 << 8) - 1); | |
128 | } | |
129 | ||
130 | static inline u32 i5100_spdcmd_create(u32 dti, u32 ckovrd, u32 sa, u32 ba, | |
131 | u32 data, u32 cmd) | |
132 | { | |
133 | return ((dti & ((1 << 4) - 1)) << 28) | | |
134 | ((ckovrd & 1) << 27) | | |
135 | ((sa & ((1 << 3) - 1)) << 24) | | |
136 | ((ba & ((1 << 8) - 1)) << 16) | | |
137 | ((data & ((1 << 8) - 1)) << 8) | | |
138 | (cmd & 1); | |
139 | } | |
140 | ||
141 | static inline u16 i5100_tolm_tolm(u16 a) | |
142 | { | |
143 | return a >> 12 & ((1 << 4) - 1); | |
144 | } | |
145 | ||
146 | static inline u16 i5100_mir_limit(u16 a) | |
147 | { | |
148 | return a >> 4 & ((1 << 12) - 1); | |
149 | } | |
150 | ||
151 | static inline u16 i5100_mir_way1(u16 a) | |
152 | { | |
153 | return a >> 1 & 1; | |
154 | } | |
155 | ||
156 | static inline u16 i5100_mir_way0(u16 a) | |
157 | { | |
158 | return a & 1; | |
159 | } | |
160 | ||
161 | static inline u32 i5100_ferr_nf_mem_chan_indx(u32 a) | |
162 | { | |
163 | return a >> 28 & 1; | |
164 | } | |
165 | ||
166 | static inline u32 i5100_ferr_nf_mem_any(u32 a) | |
167 | { | |
168 | return a & I5100_FERR_NF_MEM_ANY_MASK; | |
169 | } | |
170 | ||
171 | static inline u32 i5100_nerr_nf_mem_any(u32 a) | |
172 | { | |
173 | return i5100_ferr_nf_mem_any(a); | |
174 | } | |
175 | ||
176 | static inline u32 i5100_dmir_limit(u32 a) | |
177 | { | |
178 | return a >> 16 & ((1 << 11) - 1); | |
179 | } | |
180 | ||
181 | static inline u32 i5100_dmir_rank(u32 a, u32 i) | |
182 | { | |
183 | return a >> (4 * i) & ((1 << 2) - 1); | |
184 | } | |
185 | ||
186 | static inline u16 i5100_mtr_present(u16 a) | |
187 | { | |
188 | return a >> 10 & 1; | |
189 | } | |
190 | ||
191 | static inline u16 i5100_mtr_ethrottle(u16 a) | |
192 | { | |
193 | return a >> 9 & 1; | |
194 | } | |
195 | ||
196 | static inline u16 i5100_mtr_width(u16 a) | |
197 | { | |
198 | return a >> 8 & 1; | |
199 | } | |
200 | ||
201 | static inline u16 i5100_mtr_numbank(u16 a) | |
202 | { | |
203 | return a >> 6 & 1; | |
204 | } | |
205 | ||
206 | static inline u16 i5100_mtr_numrow(u16 a) | |
207 | { | |
208 | return a >> 2 & ((1 << 2) - 1); | |
209 | } | |
210 | ||
211 | static inline u16 i5100_mtr_numcol(u16 a) | |
212 | { | |
213 | return a & ((1 << 2) - 1); | |
214 | } | |
215 | ||
216 | ||
217 | static inline u32 i5100_validlog_redmemvalid(u32 a) | |
218 | { | |
219 | return a >> 2 & 1; | |
220 | } | |
221 | ||
222 | static inline u32 i5100_validlog_recmemvalid(u32 a) | |
223 | { | |
224 | return a >> 1 & 1; | |
225 | } | |
226 | ||
227 | static inline u32 i5100_validlog_nrecmemvalid(u32 a) | |
228 | { | |
229 | return a & 1; | |
230 | } | |
231 | ||
232 | static inline u32 i5100_nrecmema_merr(u32 a) | |
233 | { | |
234 | return a >> 15 & ((1 << 5) - 1); | |
235 | } | |
236 | ||
237 | static inline u32 i5100_nrecmema_bank(u32 a) | |
238 | { | |
239 | return a >> 12 & ((1 << 3) - 1); | |
240 | } | |
241 | ||
242 | static inline u32 i5100_nrecmema_rank(u32 a) | |
243 | { | |
244 | return a >> 8 & ((1 << 3) - 1); | |
245 | } | |
246 | ||
247 | static inline u32 i5100_nrecmema_dm_buf_id(u32 a) | |
248 | { | |
249 | return a & ((1 << 8) - 1); | |
250 | } | |
251 | ||
252 | static inline u32 i5100_nrecmemb_cas(u32 a) | |
253 | { | |
254 | return a >> 16 & ((1 << 13) - 1); | |
255 | } | |
256 | ||
257 | static inline u32 i5100_nrecmemb_ras(u32 a) | |
258 | { | |
259 | return a & ((1 << 16) - 1); | |
260 | } | |
261 | ||
262 | static inline u32 i5100_redmemb_ecc_locator(u32 a) | |
263 | { | |
264 | return a & ((1 << 18) - 1); | |
265 | } | |
266 | ||
267 | static inline u32 i5100_recmema_merr(u32 a) | |
268 | { | |
269 | return i5100_nrecmema_merr(a); | |
270 | } | |
271 | ||
272 | static inline u32 i5100_recmema_bank(u32 a) | |
273 | { | |
274 | return i5100_nrecmema_bank(a); | |
275 | } | |
276 | ||
277 | static inline u32 i5100_recmema_rank(u32 a) | |
278 | { | |
279 | return i5100_nrecmema_rank(a); | |
280 | } | |
281 | ||
282 | static inline u32 i5100_recmema_dm_buf_id(u32 a) | |
283 | { | |
284 | return i5100_nrecmema_dm_buf_id(a); | |
285 | } | |
286 | ||
287 | static inline u32 i5100_recmemb_cas(u32 a) | |
288 | { | |
289 | return i5100_nrecmemb_cas(a); | |
290 | } | |
291 | ||
292 | static inline u32 i5100_recmemb_ras(u32 a) | |
293 | { | |
294 | return i5100_nrecmemb_ras(a); | |
295 | } | |
8f421c59 AJ |
296 | |
297 | /* some generic limits */ | |
b18dfd05 NC |
298 | #define I5100_MAX_RANKS_PER_CHAN 6 |
299 | #define I5100_CHANNELS 2 | |
8f421c59 AJ |
300 | #define I5100_MAX_RANKS_PER_DIMM 4 |
301 | #define I5100_DIMM_ADDR_LINES (6 - 3) /* 64 bits / 8 bits per byte */ | |
b18dfd05 | 302 | #define I5100_MAX_DIMM_SLOTS_PER_CHAN 4 |
8f421c59 AJ |
303 | #define I5100_MAX_RANK_INTERLEAVE 4 |
304 | #define I5100_MAX_DMIRS 5 | |
295439f2 | 305 | #define I5100_SCRUB_REFRESH_RATE (5 * 60 * HZ) |
8f421c59 AJ |
306 | |
307 | struct i5100_priv { | |
308 | /* ranks on each dimm -- 0 maps to not present -- obtained via SPD */ | |
b18dfd05 | 309 | int dimm_numrank[I5100_CHANNELS][I5100_MAX_DIMM_SLOTS_PER_CHAN]; |
8f421c59 AJ |
310 | |
311 | /* | |
312 | * mainboard chip select map -- maps i5100 chip selects to | |
313 | * DIMM slot chip selects. In the case of only 4 ranks per | |
b18dfd05 NC |
314 | * channel, the mapping is fairly obvious but not unique. |
315 | * we map -1 -> NC and assume both channels use the same | |
8f421c59 AJ |
316 | * map... |
317 | * | |
318 | */ | |
b18dfd05 | 319 | int dimm_csmap[I5100_MAX_DIMM_SLOTS_PER_CHAN][I5100_MAX_RANKS_PER_DIMM]; |
8f421c59 AJ |
320 | |
321 | /* memory interleave range */ | |
322 | struct { | |
323 | u64 limit; | |
324 | unsigned way[2]; | |
b18dfd05 | 325 | } mir[I5100_CHANNELS]; |
8f421c59 AJ |
326 | |
327 | /* adjusted memory interleave range register */ | |
b18dfd05 | 328 | unsigned amir[I5100_CHANNELS]; |
8f421c59 AJ |
329 | |
330 | /* dimm interleave range */ | |
331 | struct { | |
332 | unsigned rank[I5100_MAX_RANK_INTERLEAVE]; | |
333 | u64 limit; | |
b18dfd05 | 334 | } dmir[I5100_CHANNELS][I5100_MAX_DMIRS]; |
8f421c59 AJ |
335 | |
336 | /* memory technology registers... */ | |
337 | struct { | |
338 | unsigned present; /* 0 or 1 */ | |
339 | unsigned ethrottle; /* 0 or 1 */ | |
340 | unsigned width; /* 4 or 8 bits */ | |
341 | unsigned numbank; /* 2 or 3 lines */ | |
342 | unsigned numrow; /* 13 .. 16 lines */ | |
343 | unsigned numcol; /* 11 .. 12 lines */ | |
b18dfd05 | 344 | } mtr[I5100_CHANNELS][I5100_MAX_RANKS_PER_CHAN]; |
8f421c59 AJ |
345 | |
346 | u64 tolm; /* top of low memory in bytes */ | |
b18dfd05 | 347 | unsigned ranksperchan; /* number of ranks per channel */ |
8f421c59 AJ |
348 | |
349 | struct pci_dev *mc; /* device 16 func 1 */ | |
52608ba2 | 350 | struct pci_dev *einj; /* device 19 func 0 */ |
8f421c59 AJ |
351 | struct pci_dev *ch0mm; /* device 21 func 0 */ |
352 | struct pci_dev *ch1mm; /* device 22 func 0 */ | |
295439f2 NC |
353 | |
354 | struct delayed_work i5100_scrubbing; | |
355 | int scrub_enable; | |
53ceafd6 NS |
356 | |
357 | /* Error injection */ | |
358 | u8 inject_channel; | |
359 | u8 inject_hlinesel; | |
360 | u8 inject_deviceptr1; | |
361 | u8 inject_deviceptr2; | |
362 | u16 inject_eccmask1; | |
363 | u16 inject_eccmask2; | |
9cbc6d38 NS |
364 | |
365 | struct dentry *debugfs; | |
8f421c59 AJ |
366 | }; |
367 | ||
9cbc6d38 NS |
368 | static struct dentry *i5100_debugfs; |
369 | ||
b18dfd05 | 370 | /* map a rank/chan to a slot number on the mainboard */ |
8f421c59 | 371 | static int i5100_rank_to_slot(const struct mem_ctl_info *mci, |
b18dfd05 | 372 | int chan, int rank) |
8f421c59 AJ |
373 | { |
374 | const struct i5100_priv *priv = mci->pvt_info; | |
375 | int i; | |
376 | ||
b18dfd05 | 377 | for (i = 0; i < I5100_MAX_DIMM_SLOTS_PER_CHAN; i++) { |
8f421c59 | 378 | int j; |
b18dfd05 | 379 | const int numrank = priv->dimm_numrank[chan][i]; |
8f421c59 AJ |
380 | |
381 | for (j = 0; j < numrank; j++) | |
382 | if (priv->dimm_csmap[i][j] == rank) | |
b18dfd05 | 383 | return i * 2 + chan; |
8f421c59 AJ |
384 | } |
385 | ||
386 | return -1; | |
387 | } | |
388 | ||
8f421c59 AJ |
389 | static const char *i5100_err_msg(unsigned err) |
390 | { | |
b238e577 | 391 | static const char *merrs[] = { |
8f421c59 AJ |
392 | "unknown", /* 0 */ |
393 | "uncorrectable data ECC on replay", /* 1 */ | |
394 | "unknown", /* 2 */ | |
395 | "unknown", /* 3 */ | |
396 | "aliased uncorrectable demand data ECC", /* 4 */ | |
397 | "aliased uncorrectable spare-copy data ECC", /* 5 */ | |
398 | "aliased uncorrectable patrol data ECC", /* 6 */ | |
399 | "unknown", /* 7 */ | |
400 | "unknown", /* 8 */ | |
401 | "unknown", /* 9 */ | |
402 | "non-aliased uncorrectable demand data ECC", /* 10 */ | |
403 | "non-aliased uncorrectable spare-copy data ECC", /* 11 */ | |
404 | "non-aliased uncorrectable patrol data ECC", /* 12 */ | |
405 | "unknown", /* 13 */ | |
406 | "correctable demand data ECC", /* 14 */ | |
407 | "correctable spare-copy data ECC", /* 15 */ | |
408 | "correctable patrol data ECC", /* 16 */ | |
409 | "unknown", /* 17 */ | |
410 | "SPD protocol error", /* 18 */ | |
411 | "unknown", /* 19 */ | |
412 | "spare copy initiated", /* 20 */ | |
413 | "spare copy completed", /* 21 */ | |
414 | }; | |
415 | unsigned i; | |
416 | ||
417 | for (i = 0; i < ARRAY_SIZE(merrs); i++) | |
418 | if (1 << i & err) | |
419 | return merrs[i]; | |
420 | ||
421 | return "none"; | |
422 | } | |
423 | ||
b18dfd05 | 424 | /* convert csrow index into a rank (per channel -- 0..5) */ |
8f421c59 AJ |
425 | static int i5100_csrow_to_rank(const struct mem_ctl_info *mci, int csrow) |
426 | { | |
427 | const struct i5100_priv *priv = mci->pvt_info; | |
428 | ||
b18dfd05 | 429 | return csrow % priv->ranksperchan; |
8f421c59 AJ |
430 | } |
431 | ||
b18dfd05 NC |
432 | /* convert csrow index into a channel (0..1) */ |
433 | static int i5100_csrow_to_chan(const struct mem_ctl_info *mci, int csrow) | |
8f421c59 AJ |
434 | { |
435 | const struct i5100_priv *priv = mci->pvt_info; | |
436 | ||
b18dfd05 | 437 | return csrow / priv->ranksperchan; |
8f421c59 AJ |
438 | } |
439 | ||
8f421c59 | 440 | static void i5100_handle_ce(struct mem_ctl_info *mci, |
b18dfd05 | 441 | int chan, |
8f421c59 AJ |
442 | unsigned bank, |
443 | unsigned rank, | |
444 | unsigned long syndrome, | |
445 | unsigned cas, | |
446 | unsigned ras, | |
447 | const char *msg) | |
448 | { | |
d1afaa0a | 449 | char detail[80]; |
084a4fcc | 450 | |
d1afaa0a MCC |
451 | /* Form out message */ |
452 | snprintf(detail, sizeof(detail), | |
453 | "bank %u, cas %u, ras %u\n", | |
454 | bank, cas, ras); | |
8f421c59 | 455 | |
9eb07a7f | 456 | edac_mc_handle_error(HW_EVENT_ERR_CORRECTED, mci, 1, |
d1afaa0a MCC |
457 | 0, 0, syndrome, |
458 | chan, rank, -1, | |
03f7eae8 | 459 | msg, detail); |
8f421c59 AJ |
460 | } |
461 | ||
462 | static void i5100_handle_ue(struct mem_ctl_info *mci, | |
b18dfd05 | 463 | int chan, |
8f421c59 AJ |
464 | unsigned bank, |
465 | unsigned rank, | |
466 | unsigned long syndrome, | |
467 | unsigned cas, | |
468 | unsigned ras, | |
469 | const char *msg) | |
470 | { | |
d1afaa0a | 471 | char detail[80]; |
8f421c59 | 472 | |
d1afaa0a MCC |
473 | /* Form out message */ |
474 | snprintf(detail, sizeof(detail), | |
475 | "bank %u, cas %u, ras %u\n", | |
476 | bank, cas, ras); | |
8f421c59 | 477 | |
9eb07a7f | 478 | edac_mc_handle_error(HW_EVENT_ERR_UNCORRECTED, mci, 1, |
d1afaa0a MCC |
479 | 0, 0, syndrome, |
480 | chan, rank, -1, | |
03f7eae8 | 481 | msg, detail); |
8f421c59 AJ |
482 | } |
483 | ||
b18dfd05 | 484 | static void i5100_read_log(struct mem_ctl_info *mci, int chan, |
8f421c59 AJ |
485 | u32 ferr, u32 nerr) |
486 | { | |
487 | struct i5100_priv *priv = mci->pvt_info; | |
b18dfd05 | 488 | struct pci_dev *pdev = (chan) ? priv->ch1mm : priv->ch0mm; |
8f421c59 AJ |
489 | u32 dw; |
490 | u32 dw2; | |
491 | unsigned syndrome = 0; | |
492 | unsigned ecc_loc = 0; | |
493 | unsigned merr; | |
494 | unsigned bank; | |
495 | unsigned rank; | |
496 | unsigned cas; | |
497 | unsigned ras; | |
498 | ||
499 | pci_read_config_dword(pdev, I5100_VALIDLOG, &dw); | |
500 | ||
b238e577 | 501 | if (i5100_validlog_redmemvalid(dw)) { |
8f421c59 | 502 | pci_read_config_dword(pdev, I5100_REDMEMA, &dw2); |
b238e577 | 503 | syndrome = dw2; |
8f421c59 | 504 | pci_read_config_dword(pdev, I5100_REDMEMB, &dw2); |
b238e577 | 505 | ecc_loc = i5100_redmemb_ecc_locator(dw2); |
8f421c59 AJ |
506 | } |
507 | ||
b238e577 | 508 | if (i5100_validlog_recmemvalid(dw)) { |
8f421c59 AJ |
509 | const char *msg; |
510 | ||
511 | pci_read_config_dword(pdev, I5100_RECMEMA, &dw2); | |
b238e577 AJ |
512 | merr = i5100_recmema_merr(dw2); |
513 | bank = i5100_recmema_bank(dw2); | |
514 | rank = i5100_recmema_rank(dw2); | |
8f421c59 AJ |
515 | |
516 | pci_read_config_dword(pdev, I5100_RECMEMB, &dw2); | |
b238e577 AJ |
517 | cas = i5100_recmemb_cas(dw2); |
518 | ras = i5100_recmemb_ras(dw2); | |
8f421c59 AJ |
519 | |
520 | /* FIXME: not really sure if this is what merr is... | |
521 | */ | |
522 | if (!merr) | |
523 | msg = i5100_err_msg(ferr); | |
524 | else | |
525 | msg = i5100_err_msg(nerr); | |
526 | ||
b18dfd05 | 527 | i5100_handle_ce(mci, chan, bank, rank, syndrome, cas, ras, msg); |
8f421c59 AJ |
528 | } |
529 | ||
b238e577 | 530 | if (i5100_validlog_nrecmemvalid(dw)) { |
8f421c59 AJ |
531 | const char *msg; |
532 | ||
533 | pci_read_config_dword(pdev, I5100_NRECMEMA, &dw2); | |
b238e577 AJ |
534 | merr = i5100_nrecmema_merr(dw2); |
535 | bank = i5100_nrecmema_bank(dw2); | |
536 | rank = i5100_nrecmema_rank(dw2); | |
8f421c59 AJ |
537 | |
538 | pci_read_config_dword(pdev, I5100_NRECMEMB, &dw2); | |
b238e577 AJ |
539 | cas = i5100_nrecmemb_cas(dw2); |
540 | ras = i5100_nrecmemb_ras(dw2); | |
8f421c59 AJ |
541 | |
542 | /* FIXME: not really sure if this is what merr is... | |
543 | */ | |
544 | if (!merr) | |
545 | msg = i5100_err_msg(ferr); | |
546 | else | |
547 | msg = i5100_err_msg(nerr); | |
548 | ||
b18dfd05 | 549 | i5100_handle_ue(mci, chan, bank, rank, syndrome, cas, ras, msg); |
8f421c59 AJ |
550 | } |
551 | ||
552 | pci_write_config_dword(pdev, I5100_VALIDLOG, dw); | |
553 | } | |
554 | ||
555 | static void i5100_check_error(struct mem_ctl_info *mci) | |
556 | { | |
557 | struct i5100_priv *priv = mci->pvt_info; | |
df95e42e | 558 | u32 dw, dw2; |
8f421c59 AJ |
559 | |
560 | pci_read_config_dword(priv->mc, I5100_FERR_NF_MEM, &dw); | |
b238e577 | 561 | if (i5100_ferr_nf_mem_any(dw)) { |
8f421c59 AJ |
562 | |
563 | pci_read_config_dword(priv->mc, I5100_NERR_NF_MEM, &dw2); | |
8f421c59 | 564 | |
b238e577 AJ |
565 | i5100_read_log(mci, i5100_ferr_nf_mem_chan_indx(dw), |
566 | i5100_ferr_nf_mem_any(dw), | |
567 | i5100_nerr_nf_mem_any(dw2)); | |
df95e42e NS |
568 | |
569 | pci_write_config_dword(priv->mc, I5100_NERR_NF_MEM, dw2); | |
8f421c59 | 570 | } |
df95e42e | 571 | pci_write_config_dword(priv->mc, I5100_FERR_NF_MEM, dw); |
8f421c59 AJ |
572 | } |
573 | ||
295439f2 NC |
574 | /* The i5100 chipset will scrub the entire memory once, then |
575 | * set a done bit. Continuous scrubbing is achieved by enqueing | |
576 | * delayed work to a workqueue, checking every few minutes if | |
577 | * the scrubbing has completed and if so reinitiating it. | |
578 | */ | |
579 | ||
580 | static void i5100_refresh_scrubbing(struct work_struct *work) | |
581 | { | |
582 | struct delayed_work *i5100_scrubbing = container_of(work, | |
583 | struct delayed_work, | |
584 | work); | |
585 | struct i5100_priv *priv = container_of(i5100_scrubbing, | |
586 | struct i5100_priv, | |
587 | i5100_scrubbing); | |
588 | u32 dw; | |
589 | ||
590 | pci_read_config_dword(priv->mc, I5100_MC, &dw); | |
591 | ||
592 | if (priv->scrub_enable) { | |
593 | ||
594 | pci_read_config_dword(priv->mc, I5100_MC, &dw); | |
595 | ||
596 | if (i5100_mc_scrbdone(dw)) { | |
597 | dw |= I5100_MC_SCRBEN_MASK; | |
598 | pci_write_config_dword(priv->mc, I5100_MC, dw); | |
599 | pci_read_config_dword(priv->mc, I5100_MC, &dw); | |
600 | } | |
601 | ||
602 | schedule_delayed_work(&(priv->i5100_scrubbing), | |
603 | I5100_SCRUB_REFRESH_RATE); | |
604 | } | |
605 | } | |
606 | /* | |
607 | * The bandwidth is based on experimentation, feel free to refine it. | |
608 | */ | |
eba042a8 | 609 | static int i5100_set_scrub_rate(struct mem_ctl_info *mci, u32 bandwidth) |
295439f2 NC |
610 | { |
611 | struct i5100_priv *priv = mci->pvt_info; | |
612 | u32 dw; | |
613 | ||
614 | pci_read_config_dword(priv->mc, I5100_MC, &dw); | |
eba042a8 | 615 | if (bandwidth) { |
295439f2 NC |
616 | priv->scrub_enable = 1; |
617 | dw |= I5100_MC_SCRBEN_MASK; | |
618 | schedule_delayed_work(&(priv->i5100_scrubbing), | |
619 | I5100_SCRUB_REFRESH_RATE); | |
620 | } else { | |
621 | priv->scrub_enable = 0; | |
622 | dw &= ~I5100_MC_SCRBEN_MASK; | |
623 | cancel_delayed_work(&(priv->i5100_scrubbing)); | |
624 | } | |
625 | pci_write_config_dword(priv->mc, I5100_MC, dw); | |
626 | ||
627 | pci_read_config_dword(priv->mc, I5100_MC, &dw); | |
628 | ||
eba042a8 | 629 | bandwidth = 5900000 * i5100_mc_scrben(dw); |
295439f2 | 630 | |
39094443 | 631 | return bandwidth; |
295439f2 NC |
632 | } |
633 | ||
39094443 | 634 | static int i5100_get_scrub_rate(struct mem_ctl_info *mci) |
295439f2 NC |
635 | { |
636 | struct i5100_priv *priv = mci->pvt_info; | |
637 | u32 dw; | |
638 | ||
639 | pci_read_config_dword(priv->mc, I5100_MC, &dw); | |
640 | ||
39094443 | 641 | return 5900000 * i5100_mc_scrben(dw); |
295439f2 NC |
642 | } |
643 | ||
8f421c59 AJ |
644 | static struct pci_dev *pci_get_device_func(unsigned vendor, |
645 | unsigned device, | |
646 | unsigned func) | |
647 | { | |
648 | struct pci_dev *ret = NULL; | |
649 | ||
650 | while (1) { | |
651 | ret = pci_get_device(vendor, device, ret); | |
652 | ||
653 | if (!ret) | |
654 | break; | |
655 | ||
656 | if (PCI_FUNC(ret->devfn) == func) | |
657 | break; | |
658 | } | |
659 | ||
660 | return ret; | |
661 | } | |
662 | ||
9b3c6e85 | 663 | static unsigned long i5100_npages(struct mem_ctl_info *mci, int csrow) |
8f421c59 AJ |
664 | { |
665 | struct i5100_priv *priv = mci->pvt_info; | |
b18dfd05 NC |
666 | const unsigned chan_rank = i5100_csrow_to_rank(mci, csrow); |
667 | const unsigned chan = i5100_csrow_to_chan(mci, csrow); | |
8f421c59 AJ |
668 | unsigned addr_lines; |
669 | ||
670 | /* dimm present? */ | |
b18dfd05 | 671 | if (!priv->mtr[chan][chan_rank].present) |
8f421c59 AJ |
672 | return 0ULL; |
673 | ||
674 | addr_lines = | |
675 | I5100_DIMM_ADDR_LINES + | |
b18dfd05 NC |
676 | priv->mtr[chan][chan_rank].numcol + |
677 | priv->mtr[chan][chan_rank].numrow + | |
678 | priv->mtr[chan][chan_rank].numbank; | |
8f421c59 AJ |
679 | |
680 | return (unsigned long) | |
681 | ((unsigned long long) (1ULL << addr_lines) / PAGE_SIZE); | |
682 | } | |
683 | ||
9b3c6e85 | 684 | static void i5100_init_mtr(struct mem_ctl_info *mci) |
8f421c59 AJ |
685 | { |
686 | struct i5100_priv *priv = mci->pvt_info; | |
687 | struct pci_dev *mms[2] = { priv->ch0mm, priv->ch1mm }; | |
688 | int i; | |
689 | ||
b18dfd05 | 690 | for (i = 0; i < I5100_CHANNELS; i++) { |
8f421c59 AJ |
691 | int j; |
692 | struct pci_dev *pdev = mms[i]; | |
693 | ||
b18dfd05 | 694 | for (j = 0; j < I5100_MAX_RANKS_PER_CHAN; j++) { |
8f421c59 AJ |
695 | const unsigned addr = |
696 | (j < 4) ? I5100_MTR_0 + j * 2 : | |
697 | I5100_MTR_4 + (j - 4) * 2; | |
698 | u16 w; | |
699 | ||
700 | pci_read_config_word(pdev, addr, &w); | |
701 | ||
b238e577 AJ |
702 | priv->mtr[i][j].present = i5100_mtr_present(w); |
703 | priv->mtr[i][j].ethrottle = i5100_mtr_ethrottle(w); | |
704 | priv->mtr[i][j].width = 4 + 4 * i5100_mtr_width(w); | |
705 | priv->mtr[i][j].numbank = 2 + i5100_mtr_numbank(w); | |
706 | priv->mtr[i][j].numrow = 13 + i5100_mtr_numrow(w); | |
707 | priv->mtr[i][j].numcol = 10 + i5100_mtr_numcol(w); | |
8f421c59 AJ |
708 | } |
709 | } | |
710 | } | |
711 | ||
712 | /* | |
713 | * FIXME: make this into a real i2c adapter (so that dimm-decode | |
714 | * will work)? | |
715 | */ | |
716 | static int i5100_read_spd_byte(const struct mem_ctl_info *mci, | |
717 | u8 ch, u8 slot, u8 addr, u8 *byte) | |
718 | { | |
719 | struct i5100_priv *priv = mci->pvt_info; | |
720 | u16 w; | |
8f421c59 AJ |
721 | unsigned long et; |
722 | ||
723 | pci_read_config_word(priv->mc, I5100_SPDDATA, &w); | |
b238e577 | 724 | if (i5100_spddata_busy(w)) |
8f421c59 AJ |
725 | return -1; |
726 | ||
b238e577 AJ |
727 | pci_write_config_dword(priv->mc, I5100_SPDCMD, |
728 | i5100_spdcmd_create(0xa, 1, ch * 4 + slot, addr, | |
729 | 0, 0)); | |
8f421c59 AJ |
730 | |
731 | /* wait up to 100ms */ | |
732 | et = jiffies + HZ / 10; | |
733 | udelay(100); | |
734 | while (1) { | |
735 | pci_read_config_word(priv->mc, I5100_SPDDATA, &w); | |
b238e577 | 736 | if (!i5100_spddata_busy(w)) |
8f421c59 AJ |
737 | break; |
738 | udelay(100); | |
739 | } | |
740 | ||
b238e577 | 741 | if (!i5100_spddata_rdo(w) || i5100_spddata_sbe(w)) |
8f421c59 AJ |
742 | return -1; |
743 | ||
b238e577 | 744 | *byte = i5100_spddata_data(w); |
8f421c59 AJ |
745 | |
746 | return 0; | |
747 | } | |
748 | ||
749 | /* | |
750 | * fill dimm chip select map | |
751 | * | |
752 | * FIXME: | |
8f421c59 AJ |
753 | * o not the only way to may chip selects to dimm slots |
754 | * o investigate if there is some way to obtain this map from the bios | |
755 | */ | |
9b3c6e85 | 756 | static void i5100_init_dimm_csmap(struct mem_ctl_info *mci) |
8f421c59 AJ |
757 | { |
758 | struct i5100_priv *priv = mci->pvt_info; | |
759 | int i; | |
760 | ||
b18dfd05 | 761 | for (i = 0; i < I5100_MAX_DIMM_SLOTS_PER_CHAN; i++) { |
8f421c59 AJ |
762 | int j; |
763 | ||
764 | for (j = 0; j < I5100_MAX_RANKS_PER_DIMM; j++) | |
765 | priv->dimm_csmap[i][j] = -1; /* default NC */ | |
766 | } | |
767 | ||
768 | /* only 2 chip selects per slot... */ | |
bbead210 NC |
769 | if (priv->ranksperchan == 4) { |
770 | priv->dimm_csmap[0][0] = 0; | |
771 | priv->dimm_csmap[0][1] = 3; | |
772 | priv->dimm_csmap[1][0] = 1; | |
773 | priv->dimm_csmap[1][1] = 2; | |
774 | priv->dimm_csmap[2][0] = 2; | |
775 | priv->dimm_csmap[3][0] = 3; | |
776 | } else { | |
777 | priv->dimm_csmap[0][0] = 0; | |
778 | priv->dimm_csmap[0][1] = 1; | |
779 | priv->dimm_csmap[1][0] = 2; | |
780 | priv->dimm_csmap[1][1] = 3; | |
781 | priv->dimm_csmap[2][0] = 4; | |
782 | priv->dimm_csmap[2][1] = 5; | |
783 | } | |
8f421c59 AJ |
784 | } |
785 | ||
9b3c6e85 GKH |
786 | static void i5100_init_dimm_layout(struct pci_dev *pdev, |
787 | struct mem_ctl_info *mci) | |
8f421c59 AJ |
788 | { |
789 | struct i5100_priv *priv = mci->pvt_info; | |
790 | int i; | |
791 | ||
b18dfd05 | 792 | for (i = 0; i < I5100_CHANNELS; i++) { |
8f421c59 AJ |
793 | int j; |
794 | ||
b18dfd05 | 795 | for (j = 0; j < I5100_MAX_DIMM_SLOTS_PER_CHAN; j++) { |
8f421c59 AJ |
796 | u8 rank; |
797 | ||
798 | if (i5100_read_spd_byte(mci, i, j, 5, &rank) < 0) | |
799 | priv->dimm_numrank[i][j] = 0; | |
800 | else | |
801 | priv->dimm_numrank[i][j] = (rank & 3) + 1; | |
802 | } | |
803 | } | |
804 | ||
805 | i5100_init_dimm_csmap(mci); | |
806 | } | |
807 | ||
9b3c6e85 GKH |
808 | static void i5100_init_interleaving(struct pci_dev *pdev, |
809 | struct mem_ctl_info *mci) | |
8f421c59 AJ |
810 | { |
811 | u16 w; | |
812 | u32 dw; | |
813 | struct i5100_priv *priv = mci->pvt_info; | |
814 | struct pci_dev *mms[2] = { priv->ch0mm, priv->ch1mm }; | |
815 | int i; | |
816 | ||
817 | pci_read_config_word(pdev, I5100_TOLM, &w); | |
b238e577 | 818 | priv->tolm = (u64) i5100_tolm_tolm(w) * 256 * 1024 * 1024; |
8f421c59 AJ |
819 | |
820 | pci_read_config_word(pdev, I5100_MIR0, &w); | |
b238e577 AJ |
821 | priv->mir[0].limit = (u64) i5100_mir_limit(w) << 28; |
822 | priv->mir[0].way[1] = i5100_mir_way1(w); | |
823 | priv->mir[0].way[0] = i5100_mir_way0(w); | |
8f421c59 AJ |
824 | |
825 | pci_read_config_word(pdev, I5100_MIR1, &w); | |
b238e577 AJ |
826 | priv->mir[1].limit = (u64) i5100_mir_limit(w) << 28; |
827 | priv->mir[1].way[1] = i5100_mir_way1(w); | |
828 | priv->mir[1].way[0] = i5100_mir_way0(w); | |
8f421c59 AJ |
829 | |
830 | pci_read_config_word(pdev, I5100_AMIR_0, &w); | |
831 | priv->amir[0] = w; | |
832 | pci_read_config_word(pdev, I5100_AMIR_1, &w); | |
833 | priv->amir[1] = w; | |
834 | ||
b18dfd05 | 835 | for (i = 0; i < I5100_CHANNELS; i++) { |
8f421c59 AJ |
836 | int j; |
837 | ||
838 | for (j = 0; j < 5; j++) { | |
839 | int k; | |
840 | ||
841 | pci_read_config_dword(mms[i], I5100_DMIR + j * 4, &dw); | |
842 | ||
843 | priv->dmir[i][j].limit = | |
b238e577 | 844 | (u64) i5100_dmir_limit(dw) << 28; |
8f421c59 AJ |
845 | for (k = 0; k < I5100_MAX_RANKS_PER_DIMM; k++) |
846 | priv->dmir[i][j].rank[k] = | |
b238e577 | 847 | i5100_dmir_rank(dw, k); |
8f421c59 AJ |
848 | } |
849 | } | |
850 | ||
851 | i5100_init_mtr(mci); | |
852 | } | |
853 | ||
9b3c6e85 | 854 | static void i5100_init_csrows(struct mem_ctl_info *mci) |
8f421c59 AJ |
855 | { |
856 | int i; | |
8f421c59 AJ |
857 | struct i5100_priv *priv = mci->pvt_info; |
858 | ||
d1afaa0a MCC |
859 | for (i = 0; i < mci->tot_dimms; i++) { |
860 | struct dimm_info *dimm; | |
8f421c59 | 861 | const unsigned long npages = i5100_npages(mci, i); |
b18dfd05 | 862 | const unsigned chan = i5100_csrow_to_chan(mci, i); |
8f421c59 AJ |
863 | const unsigned rank = i5100_csrow_to_rank(mci, i); |
864 | ||
865 | if (!npages) | |
866 | continue; | |
867 | ||
d1afaa0a MCC |
868 | dimm = EDAC_DIMM_PTR(mci->layers, mci->dimms, mci->n_layers, |
869 | chan, rank, 0); | |
084a4fcc | 870 | |
a895bf8b MCC |
871 | dimm->nr_pages = npages; |
872 | if (npages) { | |
a895bf8b MCC |
873 | dimm->grain = 32; |
874 | dimm->dtype = (priv->mtr[chan][rank].width == 4) ? | |
d1afaa0a | 875 | DEV_X4 : DEV_X8; |
a895bf8b MCC |
876 | dimm->mtype = MEM_RDDR2; |
877 | dimm->edac_mode = EDAC_SECDED; | |
878 | snprintf(dimm->label, sizeof(dimm->label), | |
879 | "DIMM%u", | |
880 | i5100_rank_to_slot(mci, chan, rank)); | |
881 | } | |
d1afaa0a | 882 | |
956b9ba1 JP |
883 | edac_dbg(2, "dimm channel %d, rank %d, size %ld\n", |
884 | chan, rank, (long)PAGES_TO_MiB(npages)); | |
8f421c59 AJ |
885 | } |
886 | } | |
887 | ||
53ceafd6 NS |
888 | /**************************************************************************** |
889 | * Error injection routines | |
890 | ****************************************************************************/ | |
891 | ||
892 | static void i5100_do_inject(struct mem_ctl_info *mci) | |
893 | { | |
894 | struct i5100_priv *priv = mci->pvt_info; | |
895 | u32 mask0; | |
896 | u16 mask1; | |
897 | ||
898 | /* MEM[1:0]EINJMSK0 | |
899 | * 31 - ADDRMATCHEN | |
900 | * 29:28 - HLINESEL | |
901 | * 00 Reserved | |
902 | * 01 Lower half of cache line | |
903 | * 10 Upper half of cache line | |
904 | * 11 Both upper and lower parts of cache line | |
905 | * 27 - EINJEN | |
906 | * 25:19 - XORMASK1 for deviceptr1 | |
907 | * 9:5 - SEC2RAM for deviceptr2 | |
908 | * 4:0 - FIR2RAM for deviceptr1 | |
909 | */ | |
910 | mask0 = ((priv->inject_hlinesel & 0x3) << 28) | | |
911 | I5100_MEMXEINJMSK0_EINJEN | | |
912 | ((priv->inject_eccmask1 & 0xffff) << 10) | | |
913 | ((priv->inject_deviceptr2 & 0x1f) << 5) | | |
914 | (priv->inject_deviceptr1 & 0x1f); | |
915 | ||
916 | /* MEM[1:0]EINJMSK1 | |
917 | * 15:0 - XORMASK2 for deviceptr2 | |
918 | */ | |
919 | mask1 = priv->inject_eccmask2; | |
920 | ||
921 | if (priv->inject_channel == 0) { | |
922 | pci_write_config_dword(priv->mc, I5100_MEM0EINJMSK0, mask0); | |
923 | pci_write_config_word(priv->mc, I5100_MEM0EINJMSK1, mask1); | |
924 | } else { | |
925 | pci_write_config_dword(priv->mc, I5100_MEM1EINJMSK0, mask0); | |
926 | pci_write_config_word(priv->mc, I5100_MEM1EINJMSK1, mask1); | |
927 | } | |
928 | ||
929 | /* Error Injection Response Function | |
930 | * Intel 5100 Memory Controller Hub Chipset (318378) datasheet | |
931 | * hints about this register but carry no data about them. All | |
932 | * data regarding device 19 is based on experimentation and the | |
933 | * Intel 7300 Chipset Memory Controller Hub (318082) datasheet | |
934 | * which appears to be accurate for the i5100 in this area. | |
935 | * | |
936 | * The injection code don't work without setting this register. | |
937 | * The register needs to be flipped off then on else the hardware | |
938 | * will only preform the first injection. | |
939 | * | |
940 | * Stop condition bits 7:4 | |
941 | * 1010 - Stop after one injection | |
942 | * 1011 - Never stop injecting faults | |
943 | * | |
944 | * Start condition bits 3:0 | |
945 | * 1010 - Never start | |
946 | * 1011 - Start immediately | |
947 | */ | |
948 | pci_write_config_byte(priv->einj, I5100_DINJ0, 0xaa); | |
949 | pci_write_config_byte(priv->einj, I5100_DINJ0, 0xab); | |
950 | } | |
951 | ||
9cbc6d38 NS |
952 | #define to_mci(k) container_of(k, struct mem_ctl_info, dev) |
953 | static ssize_t inject_enable_write(struct file *file, const char __user *data, | |
954 | size_t count, loff_t *ppos) | |
955 | { | |
956 | struct device *dev = file->private_data; | |
957 | struct mem_ctl_info *mci = to_mci(dev); | |
958 | ||
959 | i5100_do_inject(mci); | |
960 | ||
961 | return count; | |
962 | } | |
963 | ||
9cbc6d38 | 964 | static const struct file_operations i5100_inject_enable_fops = { |
b0769891 | 965 | .open = simple_open, |
9cbc6d38 NS |
966 | .write = inject_enable_write, |
967 | .llseek = generic_file_llseek, | |
968 | }; | |
969 | ||
970 | static int i5100_setup_debugfs(struct mem_ctl_info *mci) | |
971 | { | |
972 | struct i5100_priv *priv = mci->pvt_info; | |
973 | ||
974 | if (!i5100_debugfs) | |
975 | return -ENODEV; | |
976 | ||
88d84ac9 | 977 | priv->debugfs = debugfs_create_dir(mci->bus->name, i5100_debugfs); |
9cbc6d38 NS |
978 | |
979 | if (!priv->debugfs) | |
980 | return -ENOMEM; | |
981 | ||
982 | debugfs_create_x8("inject_channel", S_IRUGO | S_IWUSR, priv->debugfs, | |
983 | &priv->inject_channel); | |
984 | debugfs_create_x8("inject_hlinesel", S_IRUGO | S_IWUSR, priv->debugfs, | |
985 | &priv->inject_hlinesel); | |
986 | debugfs_create_x8("inject_deviceptr1", S_IRUGO | S_IWUSR, priv->debugfs, | |
987 | &priv->inject_deviceptr1); | |
988 | debugfs_create_x8("inject_deviceptr2", S_IRUGO | S_IWUSR, priv->debugfs, | |
989 | &priv->inject_deviceptr2); | |
990 | debugfs_create_x16("inject_eccmask1", S_IRUGO | S_IWUSR, priv->debugfs, | |
991 | &priv->inject_eccmask1); | |
992 | debugfs_create_x16("inject_eccmask2", S_IRUGO | S_IWUSR, priv->debugfs, | |
993 | &priv->inject_eccmask2); | |
994 | debugfs_create_file("inject_enable", S_IWUSR, priv->debugfs, | |
995 | &mci->dev, &i5100_inject_enable_fops); | |
996 | ||
997 | return 0; | |
998 | ||
999 | } | |
1000 | ||
9b3c6e85 | 1001 | static int i5100_init_one(struct pci_dev *pdev, const struct pci_device_id *id) |
8f421c59 AJ |
1002 | { |
1003 | int rc; | |
1004 | struct mem_ctl_info *mci; | |
d1afaa0a | 1005 | struct edac_mc_layer layers[2]; |
8f421c59 | 1006 | struct i5100_priv *priv; |
52608ba2 | 1007 | struct pci_dev *ch0mm, *ch1mm, *einj; |
8f421c59 AJ |
1008 | int ret = 0; |
1009 | u32 dw; | |
1010 | int ranksperch; | |
1011 | ||
1012 | if (PCI_FUNC(pdev->devfn) != 1) | |
1013 | return -ENODEV; | |
1014 | ||
1015 | rc = pci_enable_device(pdev); | |
1016 | if (rc < 0) { | |
1017 | ret = rc; | |
1018 | goto bail; | |
1019 | } | |
1020 | ||
43920a59 AJ |
1021 | /* ECC enabled? */ |
1022 | pci_read_config_dword(pdev, I5100_MC, &dw); | |
b238e577 | 1023 | if (!i5100_mc_errdeten(dw)) { |
43920a59 AJ |
1024 | printk(KERN_INFO "i5100_edac: ECC not enabled.\n"); |
1025 | ret = -ENODEV; | |
b238e577 | 1026 | goto bail_pdev; |
43920a59 AJ |
1027 | } |
1028 | ||
8f421c59 AJ |
1029 | /* figure out how many ranks, from strapped state of 48GB_Mode input */ |
1030 | pci_read_config_dword(pdev, I5100_MS, &dw); | |
1031 | ranksperch = !!(dw & (1 << 8)) * 2 + 4; | |
1032 | ||
178d5a74 AJ |
1033 | /* enable error reporting... */ |
1034 | pci_read_config_dword(pdev, I5100_EMASK_MEM, &dw); | |
1035 | dw &= ~I5100_FERR_NF_MEM_ANY_MASK; | |
1036 | pci_write_config_dword(pdev, I5100_EMASK_MEM, dw); | |
1037 | ||
8f421c59 AJ |
1038 | /* device 21, func 0, Channel 0 Memory Map, Error Flag/Mask, etc... */ |
1039 | ch0mm = pci_get_device_func(PCI_VENDOR_ID_INTEL, | |
1040 | PCI_DEVICE_ID_INTEL_5100_21, 0); | |
b238e577 AJ |
1041 | if (!ch0mm) { |
1042 | ret = -ENODEV; | |
1043 | goto bail_pdev; | |
1044 | } | |
8f421c59 AJ |
1045 | |
1046 | rc = pci_enable_device(ch0mm); | |
1047 | if (rc < 0) { | |
1048 | ret = rc; | |
1049 | goto bail_ch0; | |
1050 | } | |
1051 | ||
1052 | /* device 22, func 0, Channel 1 Memory Map, Error Flag/Mask, etc... */ | |
1053 | ch1mm = pci_get_device_func(PCI_VENDOR_ID_INTEL, | |
1054 | PCI_DEVICE_ID_INTEL_5100_22, 0); | |
1055 | if (!ch1mm) { | |
1056 | ret = -ENODEV; | |
b238e577 | 1057 | goto bail_disable_ch0; |
8f421c59 AJ |
1058 | } |
1059 | ||
1060 | rc = pci_enable_device(ch1mm); | |
1061 | if (rc < 0) { | |
1062 | ret = rc; | |
1063 | goto bail_ch1; | |
1064 | } | |
1065 | ||
d1afaa0a MCC |
1066 | layers[0].type = EDAC_MC_LAYER_CHANNEL; |
1067 | layers[0].size = 2; | |
1068 | layers[0].is_virt_csrow = false; | |
1069 | layers[1].type = EDAC_MC_LAYER_SLOT; | |
1070 | layers[1].size = ranksperch; | |
1071 | layers[1].is_virt_csrow = true; | |
ca0907b9 | 1072 | mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers, |
d1afaa0a | 1073 | sizeof(*priv)); |
8f421c59 AJ |
1074 | if (!mci) { |
1075 | ret = -ENOMEM; | |
b238e577 | 1076 | goto bail_disable_ch1; |
8f421c59 AJ |
1077 | } |
1078 | ||
52608ba2 NS |
1079 | |
1080 | /* device 19, func 0, Error injection */ | |
1081 | einj = pci_get_device_func(PCI_VENDOR_ID_INTEL, | |
1082 | PCI_DEVICE_ID_INTEL_5100_19, 0); | |
1083 | if (!einj) { | |
1084 | ret = -ENODEV; | |
1085 | goto bail_einj; | |
1086 | } | |
1087 | ||
1088 | rc = pci_enable_device(einj); | |
1089 | if (rc < 0) { | |
1090 | ret = rc; | |
1091 | goto bail_disable_einj; | |
1092 | } | |
1093 | ||
1094 | ||
fd687502 | 1095 | mci->pdev = &pdev->dev; |
8f421c59 AJ |
1096 | |
1097 | priv = mci->pvt_info; | |
b18dfd05 | 1098 | priv->ranksperchan = ranksperch; |
8f421c59 AJ |
1099 | priv->mc = pdev; |
1100 | priv->ch0mm = ch0mm; | |
1101 | priv->ch1mm = ch1mm; | |
52608ba2 | 1102 | priv->einj = einj; |
8f421c59 | 1103 | |
295439f2 NC |
1104 | INIT_DELAYED_WORK(&(priv->i5100_scrubbing), i5100_refresh_scrubbing); |
1105 | ||
1106 | /* If scrubbing was already enabled by the bios, start maintaining it */ | |
1107 | pci_read_config_dword(pdev, I5100_MC, &dw); | |
1108 | if (i5100_mc_scrben(dw)) { | |
1109 | priv->scrub_enable = 1; | |
1110 | schedule_delayed_work(&(priv->i5100_scrubbing), | |
1111 | I5100_SCRUB_REFRESH_RATE); | |
1112 | } | |
1113 | ||
8f421c59 AJ |
1114 | i5100_init_dimm_layout(pdev, mci); |
1115 | i5100_init_interleaving(pdev, mci); | |
1116 | ||
1117 | mci->mtype_cap = MEM_FLAG_FB_DDR2; | |
1118 | mci->edac_ctl_cap = EDAC_FLAG_SECDED; | |
1119 | mci->edac_cap = EDAC_FLAG_SECDED; | |
1120 | mci->mod_name = "i5100_edac.c"; | |
1121 | mci->mod_ver = "not versioned"; | |
1122 | mci->ctl_name = "i5100"; | |
1123 | mci->dev_name = pci_name(pdev); | |
b238e577 | 1124 | mci->ctl_page_to_phys = NULL; |
8f421c59 AJ |
1125 | |
1126 | mci->edac_check = i5100_check_error; | |
295439f2 NC |
1127 | mci->set_sdram_scrub_rate = i5100_set_scrub_rate; |
1128 | mci->get_sdram_scrub_rate = i5100_get_scrub_rate; | |
8f421c59 | 1129 | |
53ceafd6 NS |
1130 | priv->inject_channel = 0; |
1131 | priv->inject_hlinesel = 0; | |
1132 | priv->inject_deviceptr1 = 0; | |
1133 | priv->inject_deviceptr2 = 0; | |
1134 | priv->inject_eccmask1 = 0; | |
1135 | priv->inject_eccmask2 = 0; | |
1136 | ||
8f421c59 AJ |
1137 | i5100_init_csrows(mci); |
1138 | ||
1139 | /* this strange construction seems to be in every driver, dunno why */ | |
1140 | switch (edac_op_state) { | |
1141 | case EDAC_OPSTATE_POLL: | |
1142 | case EDAC_OPSTATE_NMI: | |
1143 | break; | |
1144 | default: | |
1145 | edac_op_state = EDAC_OPSTATE_POLL; | |
1146 | break; | |
1147 | } | |
1148 | ||
1149 | if (edac_mc_add_mc(mci)) { | |
1150 | ret = -ENODEV; | |
295439f2 | 1151 | goto bail_scrub; |
8f421c59 AJ |
1152 | } |
1153 | ||
9cbc6d38 NS |
1154 | i5100_setup_debugfs(mci); |
1155 | ||
b238e577 | 1156 | return ret; |
8f421c59 | 1157 | |
295439f2 NC |
1158 | bail_scrub: |
1159 | priv->scrub_enable = 0; | |
1160 | cancel_delayed_work_sync(&(priv->i5100_scrubbing)); | |
8f421c59 AJ |
1161 | edac_mc_free(mci); |
1162 | ||
52608ba2 NS |
1163 | bail_disable_einj: |
1164 | pci_disable_device(einj); | |
1165 | ||
1166 | bail_einj: | |
1167 | pci_dev_put(einj); | |
1168 | ||
b238e577 AJ |
1169 | bail_disable_ch1: |
1170 | pci_disable_device(ch1mm); | |
1171 | ||
8f421c59 AJ |
1172 | bail_ch1: |
1173 | pci_dev_put(ch1mm); | |
1174 | ||
b238e577 AJ |
1175 | bail_disable_ch0: |
1176 | pci_disable_device(ch0mm); | |
1177 | ||
8f421c59 AJ |
1178 | bail_ch0: |
1179 | pci_dev_put(ch0mm); | |
1180 | ||
b238e577 AJ |
1181 | bail_pdev: |
1182 | pci_disable_device(pdev); | |
1183 | ||
8f421c59 AJ |
1184 | bail: |
1185 | return ret; | |
1186 | } | |
1187 | ||
9b3c6e85 | 1188 | static void i5100_remove_one(struct pci_dev *pdev) |
8f421c59 AJ |
1189 | { |
1190 | struct mem_ctl_info *mci; | |
1191 | struct i5100_priv *priv; | |
1192 | ||
1193 | mci = edac_mc_del_mc(&pdev->dev); | |
1194 | ||
1195 | if (!mci) | |
1196 | return; | |
1197 | ||
1198 | priv = mci->pvt_info; | |
295439f2 | 1199 | |
59b9796d | 1200 | debugfs_remove_recursive(priv->debugfs); |
9cbc6d38 | 1201 | |
295439f2 NC |
1202 | priv->scrub_enable = 0; |
1203 | cancel_delayed_work_sync(&(priv->i5100_scrubbing)); | |
1204 | ||
b238e577 AJ |
1205 | pci_disable_device(pdev); |
1206 | pci_disable_device(priv->ch0mm); | |
1207 | pci_disable_device(priv->ch1mm); | |
52608ba2 | 1208 | pci_disable_device(priv->einj); |
8f421c59 AJ |
1209 | pci_dev_put(priv->ch0mm); |
1210 | pci_dev_put(priv->ch1mm); | |
52608ba2 | 1211 | pci_dev_put(priv->einj); |
8f421c59 AJ |
1212 | |
1213 | edac_mc_free(mci); | |
1214 | } | |
1215 | ||
36c46f31 | 1216 | static DEFINE_PCI_DEVICE_TABLE(i5100_pci_tbl) = { |
8f421c59 AJ |
1217 | /* Device 16, Function 0, Channel 0 Memory Map, Error Flag/Mask, ... */ |
1218 | { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5100_16) }, | |
1219 | { 0, } | |
1220 | }; | |
1221 | MODULE_DEVICE_TABLE(pci, i5100_pci_tbl); | |
1222 | ||
1223 | static struct pci_driver i5100_driver = { | |
1224 | .name = KBUILD_BASENAME, | |
1225 | .probe = i5100_init_one, | |
9b3c6e85 | 1226 | .remove = i5100_remove_one, |
8f421c59 AJ |
1227 | .id_table = i5100_pci_tbl, |
1228 | }; | |
1229 | ||
1230 | static int __init i5100_init(void) | |
1231 | { | |
1232 | int pci_rc; | |
1233 | ||
9cbc6d38 | 1234 | i5100_debugfs = debugfs_create_dir("i5100_edac", NULL); |
8f421c59 | 1235 | |
9cbc6d38 | 1236 | pci_rc = pci_register_driver(&i5100_driver); |
8f421c59 AJ |
1237 | return (pci_rc < 0) ? pci_rc : 0; |
1238 | } | |
1239 | ||
1240 | static void __exit i5100_exit(void) | |
1241 | { | |
59b9796d | 1242 | debugfs_remove(i5100_debugfs); |
9cbc6d38 | 1243 | |
8f421c59 AJ |
1244 | pci_unregister_driver(&i5100_driver); |
1245 | } | |
1246 | ||
1247 | module_init(i5100_init); | |
1248 | module_exit(i5100_exit); | |
1249 | ||
1250 | MODULE_LICENSE("GPL"); | |
1251 | MODULE_AUTHOR | |
1252 | ("Arthur Jones <ajones@riverbed.com>"); | |
1253 | MODULE_DESCRIPTION("MC Driver for Intel I5100 memory controllers"); |