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Arthur Jones8f421c52008-07-25 01:49:04 -07001/*
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 *
Nils Carlsonbbead212009-12-15 16:47:42 -080012 * The intel 5100 has two independent channels. EDAC core currently
13 * can not reflect this configuration so instead the chip-select
Lucas De Marchi25985ed2011-03-30 22:57:33 -030014 * rows for each respective channel are laid out one after another,
Nils Carlsonbbead212009-12-15 16:47:42 -080015 * the first half belonging to channel 0, the second half belonging
16 * to channel 1.
Arthur Jones8f421c52008-07-25 01:49:04 -070017 */
18#include <linux/module.h>
19#include <linux/init.h>
20#include <linux/pci.h>
21#include <linux/pci_ids.h>
Arthur Jones8f421c52008-07-25 01:49:04 -070022#include <linux/edac.h>
23#include <linux/delay.h>
24#include <linux/mmzone.h>
25
26#include "edac_core.h"
27
Arthur Jonesb238e572008-07-25 01:49:08 -070028/* register addresses */
Arthur Jones8f421c52008-07-25 01:49:04 -070029
30/* device 16, func 1 */
Arthur Jones43920a52008-07-25 01:49:06 -070031#define I5100_MC 0x40 /* Memory Control Register */
Nils Carlson295439f2009-12-15 16:47:42 -080032#define I5100_MC_SCRBEN_MASK (1 << 7)
33#define I5100_MC_SCRBDONE_MASK (1 << 4)
Arthur Jones8f421c52008-07-25 01:49:04 -070034#define I5100_MS 0x44 /* Memory Status Register */
35#define I5100_SPDDATA 0x48 /* Serial Presence Detect Status Reg */
Arthur Jones8f421c52008-07-25 01:49:04 -070036#define I5100_SPDCMD 0x4c /* Serial Presence Detect Command Reg */
Arthur Jones8f421c52008-07-25 01:49:04 -070037#define I5100_TOLM 0x6c /* Top of Low Memory */
Arthur Jones8f421c52008-07-25 01:49:04 -070038#define I5100_MIR0 0x80 /* Memory Interleave Range 0 */
39#define I5100_MIR1 0x84 /* Memory Interleave Range 1 */
40#define I5100_AMIR_0 0x8c /* Adjusted Memory Interleave Range 0 */
41#define I5100_AMIR_1 0x90 /* Adjusted Memory Interleave Range 1 */
Arthur Jones8f421c52008-07-25 01:49:04 -070042#define I5100_FERR_NF_MEM 0xa0 /* MC First Non Fatal Errors */
Arthur Jones8f421c52008-07-25 01:49:04 -070043#define I5100_FERR_NF_MEM_M16ERR_MASK (1 << 16)
44#define I5100_FERR_NF_MEM_M15ERR_MASK (1 << 15)
45#define I5100_FERR_NF_MEM_M14ERR_MASK (1 << 14)
Arthur Jonesf7952ff2008-07-25 01:49:05 -070046#define I5100_FERR_NF_MEM_M12ERR_MASK (1 << 12)
47#define I5100_FERR_NF_MEM_M11ERR_MASK (1 << 11)
48#define I5100_FERR_NF_MEM_M10ERR_MASK (1 << 10)
49#define I5100_FERR_NF_MEM_M6ERR_MASK (1 << 6)
50#define I5100_FERR_NF_MEM_M5ERR_MASK (1 << 5)
51#define I5100_FERR_NF_MEM_M4ERR_MASK (1 << 4)
Niklas Söderlundb6378cb2012-02-17 07:36:54 -030052#define I5100_FERR_NF_MEM_M1ERR_MASK (1 << 1)
Arthur Jones8f421c52008-07-25 01:49:04 -070053#define I5100_FERR_NF_MEM_ANY_MASK \
54 (I5100_FERR_NF_MEM_M16ERR_MASK | \
55 I5100_FERR_NF_MEM_M15ERR_MASK | \
Arthur Jonesf7952ff2008-07-25 01:49:05 -070056 I5100_FERR_NF_MEM_M14ERR_MASK | \
57 I5100_FERR_NF_MEM_M12ERR_MASK | \
58 I5100_FERR_NF_MEM_M11ERR_MASK | \
59 I5100_FERR_NF_MEM_M10ERR_MASK | \
60 I5100_FERR_NF_MEM_M6ERR_MASK | \
61 I5100_FERR_NF_MEM_M5ERR_MASK | \
62 I5100_FERR_NF_MEM_M4ERR_MASK | \
63 I5100_FERR_NF_MEM_M1ERR_MASK)
Arthur Jones8f421c52008-07-25 01:49:04 -070064#define I5100_NERR_NF_MEM 0xa4 /* MC Next Non-Fatal Errors */
Arthur Jones178d5a72008-07-25 01:49:06 -070065#define I5100_EMASK_MEM 0xa8 /* MC Error Mask Register */
Arthur Jones8f421c52008-07-25 01:49:04 -070066
67/* device 21 and 22, func 0 */
68#define I5100_MTR_0 0x154 /* Memory Technology Registers 0-3 */
69#define I5100_DMIR 0x15c /* DIMM Interleave Range */
Arthur Jones8f421c52008-07-25 01:49:04 -070070#define I5100_VALIDLOG 0x18c /* Valid Log Markers */
Arthur Jones8f421c52008-07-25 01:49:04 -070071#define I5100_NRECMEMA 0x190 /* Non-Recoverable Memory Error Log Reg A */
Arthur Jones8f421c52008-07-25 01:49:04 -070072#define I5100_NRECMEMB 0x194 /* Non-Recoverable Memory Error Log Reg B */
Arthur Jones8f421c52008-07-25 01:49:04 -070073#define I5100_REDMEMA 0x198 /* Recoverable Memory Data Error Log Reg A */
Arthur Jones8f421c52008-07-25 01:49:04 -070074#define I5100_REDMEMB 0x19c /* Recoverable Memory Data Error Log Reg B */
Arthur Jones8f421c52008-07-25 01:49:04 -070075#define I5100_RECMEMA 0x1a0 /* Recoverable Memory Error Log Reg A */
Arthur Jones8f421c52008-07-25 01:49:04 -070076#define I5100_RECMEMB 0x1a4 /* Recoverable Memory Error Log Reg B */
Arthur Jonesb238e572008-07-25 01:49:08 -070077#define I5100_MTR_4 0x1b0 /* Memory Technology Registers 4,5 */
78
79/* bit field accessors */
80
Nils Carlson295439f2009-12-15 16:47:42 -080081static inline u32 i5100_mc_scrben(u32 mc)
82{
83 return mc >> 7 & 1;
84}
85
Arthur Jonesb238e572008-07-25 01:49:08 -070086static inline u32 i5100_mc_errdeten(u32 mc)
87{
88 return mc >> 5 & 1;
89}
90
Nils Carlson295439f2009-12-15 16:47:42 -080091static inline u32 i5100_mc_scrbdone(u32 mc)
92{
93 return mc >> 4 & 1;
94}
95
Arthur Jonesb238e572008-07-25 01:49:08 -070096static inline u16 i5100_spddata_rdo(u16 a)
97{
98 return a >> 15 & 1;
99}
100
101static inline u16 i5100_spddata_sbe(u16 a)
102{
103 return a >> 13 & 1;
104}
105
106static inline u16 i5100_spddata_busy(u16 a)
107{
108 return a >> 12 & 1;
109}
110
111static inline u16 i5100_spddata_data(u16 a)
112{
113 return a & ((1 << 8) - 1);
114}
115
116static inline u32 i5100_spdcmd_create(u32 dti, u32 ckovrd, u32 sa, u32 ba,
117 u32 data, u32 cmd)
118{
119 return ((dti & ((1 << 4) - 1)) << 28) |
120 ((ckovrd & 1) << 27) |
121 ((sa & ((1 << 3) - 1)) << 24) |
122 ((ba & ((1 << 8) - 1)) << 16) |
123 ((data & ((1 << 8) - 1)) << 8) |
124 (cmd & 1);
125}
126
127static inline u16 i5100_tolm_tolm(u16 a)
128{
129 return a >> 12 & ((1 << 4) - 1);
130}
131
132static inline u16 i5100_mir_limit(u16 a)
133{
134 return a >> 4 & ((1 << 12) - 1);
135}
136
137static inline u16 i5100_mir_way1(u16 a)
138{
139 return a >> 1 & 1;
140}
141
142static inline u16 i5100_mir_way0(u16 a)
143{
144 return a & 1;
145}
146
147static inline u32 i5100_ferr_nf_mem_chan_indx(u32 a)
148{
149 return a >> 28 & 1;
150}
151
152static inline u32 i5100_ferr_nf_mem_any(u32 a)
153{
154 return a & I5100_FERR_NF_MEM_ANY_MASK;
155}
156
157static inline u32 i5100_nerr_nf_mem_any(u32 a)
158{
159 return i5100_ferr_nf_mem_any(a);
160}
161
162static inline u32 i5100_dmir_limit(u32 a)
163{
164 return a >> 16 & ((1 << 11) - 1);
165}
166
167static inline u32 i5100_dmir_rank(u32 a, u32 i)
168{
169 return a >> (4 * i) & ((1 << 2) - 1);
170}
171
172static inline u16 i5100_mtr_present(u16 a)
173{
174 return a >> 10 & 1;
175}
176
177static inline u16 i5100_mtr_ethrottle(u16 a)
178{
179 return a >> 9 & 1;
180}
181
182static inline u16 i5100_mtr_width(u16 a)
183{
184 return a >> 8 & 1;
185}
186
187static inline u16 i5100_mtr_numbank(u16 a)
188{
189 return a >> 6 & 1;
190}
191
192static inline u16 i5100_mtr_numrow(u16 a)
193{
194 return a >> 2 & ((1 << 2) - 1);
195}
196
197static inline u16 i5100_mtr_numcol(u16 a)
198{
199 return a & ((1 << 2) - 1);
200}
201
202
203static inline u32 i5100_validlog_redmemvalid(u32 a)
204{
205 return a >> 2 & 1;
206}
207
208static inline u32 i5100_validlog_recmemvalid(u32 a)
209{
210 return a >> 1 & 1;
211}
212
213static inline u32 i5100_validlog_nrecmemvalid(u32 a)
214{
215 return a & 1;
216}
217
218static inline u32 i5100_nrecmema_merr(u32 a)
219{
220 return a >> 15 & ((1 << 5) - 1);
221}
222
223static inline u32 i5100_nrecmema_bank(u32 a)
224{
225 return a >> 12 & ((1 << 3) - 1);
226}
227
228static inline u32 i5100_nrecmema_rank(u32 a)
229{
230 return a >> 8 & ((1 << 3) - 1);
231}
232
233static inline u32 i5100_nrecmema_dm_buf_id(u32 a)
234{
235 return a & ((1 << 8) - 1);
236}
237
238static inline u32 i5100_nrecmemb_cas(u32 a)
239{
240 return a >> 16 & ((1 << 13) - 1);
241}
242
243static inline u32 i5100_nrecmemb_ras(u32 a)
244{
245 return a & ((1 << 16) - 1);
246}
247
248static inline u32 i5100_redmemb_ecc_locator(u32 a)
249{
250 return a & ((1 << 18) - 1);
251}
252
253static inline u32 i5100_recmema_merr(u32 a)
254{
255 return i5100_nrecmema_merr(a);
256}
257
258static inline u32 i5100_recmema_bank(u32 a)
259{
260 return i5100_nrecmema_bank(a);
261}
262
263static inline u32 i5100_recmema_rank(u32 a)
264{
265 return i5100_nrecmema_rank(a);
266}
267
268static inline u32 i5100_recmema_dm_buf_id(u32 a)
269{
270 return i5100_nrecmema_dm_buf_id(a);
271}
272
273static inline u32 i5100_recmemb_cas(u32 a)
274{
275 return i5100_nrecmemb_cas(a);
276}
277
278static inline u32 i5100_recmemb_ras(u32 a)
279{
280 return i5100_nrecmemb_ras(a);
281}
Arthur Jones8f421c52008-07-25 01:49:04 -0700282
283/* some generic limits */
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800284#define I5100_MAX_RANKS_PER_CHAN 6
285#define I5100_CHANNELS 2
Arthur Jones8f421c52008-07-25 01:49:04 -0700286#define I5100_MAX_RANKS_PER_DIMM 4
287#define I5100_DIMM_ADDR_LINES (6 - 3) /* 64 bits / 8 bits per byte */
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800288#define I5100_MAX_DIMM_SLOTS_PER_CHAN 4
Arthur Jones8f421c52008-07-25 01:49:04 -0700289#define I5100_MAX_RANK_INTERLEAVE 4
290#define I5100_MAX_DMIRS 5
Nils Carlson295439f2009-12-15 16:47:42 -0800291#define I5100_SCRUB_REFRESH_RATE (5 * 60 * HZ)
Arthur Jones8f421c52008-07-25 01:49:04 -0700292
293struct i5100_priv {
294 /* ranks on each dimm -- 0 maps to not present -- obtained via SPD */
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800295 int dimm_numrank[I5100_CHANNELS][I5100_MAX_DIMM_SLOTS_PER_CHAN];
Arthur Jones8f421c52008-07-25 01:49:04 -0700296
297 /*
298 * mainboard chip select map -- maps i5100 chip selects to
299 * DIMM slot chip selects. In the case of only 4 ranks per
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800300 * channel, the mapping is fairly obvious but not unique.
301 * we map -1 -> NC and assume both channels use the same
Arthur Jones8f421c52008-07-25 01:49:04 -0700302 * map...
303 *
304 */
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800305 int dimm_csmap[I5100_MAX_DIMM_SLOTS_PER_CHAN][I5100_MAX_RANKS_PER_DIMM];
Arthur Jones8f421c52008-07-25 01:49:04 -0700306
307 /* memory interleave range */
308 struct {
309 u64 limit;
310 unsigned way[2];
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800311 } mir[I5100_CHANNELS];
Arthur Jones8f421c52008-07-25 01:49:04 -0700312
313 /* adjusted memory interleave range register */
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800314 unsigned amir[I5100_CHANNELS];
Arthur Jones8f421c52008-07-25 01:49:04 -0700315
316 /* dimm interleave range */
317 struct {
318 unsigned rank[I5100_MAX_RANK_INTERLEAVE];
319 u64 limit;
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800320 } dmir[I5100_CHANNELS][I5100_MAX_DMIRS];
Arthur Jones8f421c52008-07-25 01:49:04 -0700321
322 /* memory technology registers... */
323 struct {
324 unsigned present; /* 0 or 1 */
325 unsigned ethrottle; /* 0 or 1 */
326 unsigned width; /* 4 or 8 bits */
327 unsigned numbank; /* 2 or 3 lines */
328 unsigned numrow; /* 13 .. 16 lines */
329 unsigned numcol; /* 11 .. 12 lines */
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800330 } mtr[I5100_CHANNELS][I5100_MAX_RANKS_PER_CHAN];
Arthur Jones8f421c52008-07-25 01:49:04 -0700331
332 u64 tolm; /* top of low memory in bytes */
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800333 unsigned ranksperchan; /* number of ranks per channel */
Arthur Jones8f421c52008-07-25 01:49:04 -0700334
335 struct pci_dev *mc; /* device 16 func 1 */
336 struct pci_dev *ch0mm; /* device 21 func 0 */
337 struct pci_dev *ch1mm; /* device 22 func 0 */
Nils Carlson295439f2009-12-15 16:47:42 -0800338
339 struct delayed_work i5100_scrubbing;
340 int scrub_enable;
Arthur Jones8f421c52008-07-25 01:49:04 -0700341};
342
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800343/* map a rank/chan to a slot number on the mainboard */
Arthur Jones8f421c52008-07-25 01:49:04 -0700344static int i5100_rank_to_slot(const struct mem_ctl_info *mci,
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800345 int chan, int rank)
Arthur Jones8f421c52008-07-25 01:49:04 -0700346{
347 const struct i5100_priv *priv = mci->pvt_info;
348 int i;
349
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800350 for (i = 0; i < I5100_MAX_DIMM_SLOTS_PER_CHAN; i++) {
Arthur Jones8f421c52008-07-25 01:49:04 -0700351 int j;
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800352 const int numrank = priv->dimm_numrank[chan][i];
Arthur Jones8f421c52008-07-25 01:49:04 -0700353
354 for (j = 0; j < numrank; j++)
355 if (priv->dimm_csmap[i][j] == rank)
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800356 return i * 2 + chan;
Arthur Jones8f421c52008-07-25 01:49:04 -0700357 }
358
359 return -1;
360}
361
Arthur Jones8f421c52008-07-25 01:49:04 -0700362static const char *i5100_err_msg(unsigned err)
363{
Arthur Jonesb238e572008-07-25 01:49:08 -0700364 static const char *merrs[] = {
Arthur Jones8f421c52008-07-25 01:49:04 -0700365 "unknown", /* 0 */
366 "uncorrectable data ECC on replay", /* 1 */
367 "unknown", /* 2 */
368 "unknown", /* 3 */
369 "aliased uncorrectable demand data ECC", /* 4 */
370 "aliased uncorrectable spare-copy data ECC", /* 5 */
371 "aliased uncorrectable patrol data ECC", /* 6 */
372 "unknown", /* 7 */
373 "unknown", /* 8 */
374 "unknown", /* 9 */
375 "non-aliased uncorrectable demand data ECC", /* 10 */
376 "non-aliased uncorrectable spare-copy data ECC", /* 11 */
377 "non-aliased uncorrectable patrol data ECC", /* 12 */
378 "unknown", /* 13 */
379 "correctable demand data ECC", /* 14 */
380 "correctable spare-copy data ECC", /* 15 */
381 "correctable patrol data ECC", /* 16 */
382 "unknown", /* 17 */
383 "SPD protocol error", /* 18 */
384 "unknown", /* 19 */
385 "spare copy initiated", /* 20 */
386 "spare copy completed", /* 21 */
387 };
388 unsigned i;
389
390 for (i = 0; i < ARRAY_SIZE(merrs); i++)
391 if (1 << i & err)
392 return merrs[i];
393
394 return "none";
395}
396
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800397/* convert csrow index into a rank (per channel -- 0..5) */
Arthur Jones8f421c52008-07-25 01:49:04 -0700398static int i5100_csrow_to_rank(const struct mem_ctl_info *mci, int csrow)
399{
400 const struct i5100_priv *priv = mci->pvt_info;
401
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800402 return csrow % priv->ranksperchan;
Arthur Jones8f421c52008-07-25 01:49:04 -0700403}
404
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800405/* convert csrow index into a channel (0..1) */
406static int i5100_csrow_to_chan(const struct mem_ctl_info *mci, int csrow)
Arthur Jones8f421c52008-07-25 01:49:04 -0700407{
408 const struct i5100_priv *priv = mci->pvt_info;
409
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800410 return csrow / priv->ranksperchan;
Arthur Jones8f421c52008-07-25 01:49:04 -0700411}
412
413static unsigned i5100_rank_to_csrow(const struct mem_ctl_info *mci,
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800414 int chan, int rank)
Arthur Jones8f421c52008-07-25 01:49:04 -0700415{
416 const struct i5100_priv *priv = mci->pvt_info;
417
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800418 return chan * priv->ranksperchan + rank;
Arthur Jones8f421c52008-07-25 01:49:04 -0700419}
420
421static void i5100_handle_ce(struct mem_ctl_info *mci,
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800422 int chan,
Arthur Jones8f421c52008-07-25 01:49:04 -0700423 unsigned bank,
424 unsigned rank,
425 unsigned long syndrome,
426 unsigned cas,
427 unsigned ras,
428 const char *msg)
429{
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800430 const int csrow = i5100_rank_to_csrow(mci, chan, rank);
Arthur Jones8f421c52008-07-25 01:49:04 -0700431
432 printk(KERN_ERR
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800433 "CE chan %d, bank %u, rank %u, syndrome 0x%lx, "
Arthur Jones8f421c52008-07-25 01:49:04 -0700434 "cas %u, ras %u, csrow %u, label \"%s\": %s\n",
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800435 chan, bank, rank, syndrome, cas, ras,
Arthur Jones8f421c52008-07-25 01:49:04 -0700436 csrow, mci->csrows[csrow].channels[0].label, msg);
437
438 mci->ce_count++;
439 mci->csrows[csrow].ce_count++;
440 mci->csrows[csrow].channels[0].ce_count++;
441}
442
443static void i5100_handle_ue(struct mem_ctl_info *mci,
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800444 int chan,
Arthur Jones8f421c52008-07-25 01:49:04 -0700445 unsigned bank,
446 unsigned rank,
447 unsigned long syndrome,
448 unsigned cas,
449 unsigned ras,
450 const char *msg)
451{
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800452 const int csrow = i5100_rank_to_csrow(mci, chan, rank);
Arthur Jones8f421c52008-07-25 01:49:04 -0700453
454 printk(KERN_ERR
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800455 "UE chan %d, bank %u, rank %u, syndrome 0x%lx, "
Arthur Jones8f421c52008-07-25 01:49:04 -0700456 "cas %u, ras %u, csrow %u, label \"%s\": %s\n",
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800457 chan, bank, rank, syndrome, cas, ras,
Arthur Jones8f421c52008-07-25 01:49:04 -0700458 csrow, mci->csrows[csrow].channels[0].label, msg);
459
460 mci->ue_count++;
461 mci->csrows[csrow].ue_count++;
462}
463
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800464static void i5100_read_log(struct mem_ctl_info *mci, int chan,
Arthur Jones8f421c52008-07-25 01:49:04 -0700465 u32 ferr, u32 nerr)
466{
467 struct i5100_priv *priv = mci->pvt_info;
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800468 struct pci_dev *pdev = (chan) ? priv->ch1mm : priv->ch0mm;
Arthur Jones8f421c52008-07-25 01:49:04 -0700469 u32 dw;
470 u32 dw2;
471 unsigned syndrome = 0;
472 unsigned ecc_loc = 0;
473 unsigned merr;
474 unsigned bank;
475 unsigned rank;
476 unsigned cas;
477 unsigned ras;
478
479 pci_read_config_dword(pdev, I5100_VALIDLOG, &dw);
480
Arthur Jonesb238e572008-07-25 01:49:08 -0700481 if (i5100_validlog_redmemvalid(dw)) {
Arthur Jones8f421c52008-07-25 01:49:04 -0700482 pci_read_config_dword(pdev, I5100_REDMEMA, &dw2);
Arthur Jonesb238e572008-07-25 01:49:08 -0700483 syndrome = dw2;
Arthur Jones8f421c52008-07-25 01:49:04 -0700484 pci_read_config_dword(pdev, I5100_REDMEMB, &dw2);
Arthur Jonesb238e572008-07-25 01:49:08 -0700485 ecc_loc = i5100_redmemb_ecc_locator(dw2);
Arthur Jones8f421c52008-07-25 01:49:04 -0700486 }
487
Arthur Jonesb238e572008-07-25 01:49:08 -0700488 if (i5100_validlog_recmemvalid(dw)) {
Arthur Jones8f421c52008-07-25 01:49:04 -0700489 const char *msg;
490
491 pci_read_config_dword(pdev, I5100_RECMEMA, &dw2);
Arthur Jonesb238e572008-07-25 01:49:08 -0700492 merr = i5100_recmema_merr(dw2);
493 bank = i5100_recmema_bank(dw2);
494 rank = i5100_recmema_rank(dw2);
Arthur Jones8f421c52008-07-25 01:49:04 -0700495
496 pci_read_config_dword(pdev, I5100_RECMEMB, &dw2);
Arthur Jonesb238e572008-07-25 01:49:08 -0700497 cas = i5100_recmemb_cas(dw2);
498 ras = i5100_recmemb_ras(dw2);
Arthur Jones8f421c52008-07-25 01:49:04 -0700499
500 /* FIXME: not really sure if this is what merr is...
501 */
502 if (!merr)
503 msg = i5100_err_msg(ferr);
504 else
505 msg = i5100_err_msg(nerr);
506
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800507 i5100_handle_ce(mci, chan, bank, rank, syndrome, cas, ras, msg);
Arthur Jones8f421c52008-07-25 01:49:04 -0700508 }
509
Arthur Jonesb238e572008-07-25 01:49:08 -0700510 if (i5100_validlog_nrecmemvalid(dw)) {
Arthur Jones8f421c52008-07-25 01:49:04 -0700511 const char *msg;
512
513 pci_read_config_dword(pdev, I5100_NRECMEMA, &dw2);
Arthur Jonesb238e572008-07-25 01:49:08 -0700514 merr = i5100_nrecmema_merr(dw2);
515 bank = i5100_nrecmema_bank(dw2);
516 rank = i5100_nrecmema_rank(dw2);
Arthur Jones8f421c52008-07-25 01:49:04 -0700517
518 pci_read_config_dword(pdev, I5100_NRECMEMB, &dw2);
Arthur Jonesb238e572008-07-25 01:49:08 -0700519 cas = i5100_nrecmemb_cas(dw2);
520 ras = i5100_nrecmemb_ras(dw2);
Arthur Jones8f421c52008-07-25 01:49:04 -0700521
522 /* FIXME: not really sure if this is what merr is...
523 */
524 if (!merr)
525 msg = i5100_err_msg(ferr);
526 else
527 msg = i5100_err_msg(nerr);
528
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800529 i5100_handle_ue(mci, chan, bank, rank, syndrome, cas, ras, msg);
Arthur Jones8f421c52008-07-25 01:49:04 -0700530 }
531
532 pci_write_config_dword(pdev, I5100_VALIDLOG, dw);
533}
534
535static void i5100_check_error(struct mem_ctl_info *mci)
536{
537 struct i5100_priv *priv = mci->pvt_info;
Niklas Söderlunddf95e422011-12-09 13:12:15 -0300538 u32 dw, dw2;
Arthur Jones8f421c52008-07-25 01:49:04 -0700539
540 pci_read_config_dword(priv->mc, I5100_FERR_NF_MEM, &dw);
Arthur Jonesb238e572008-07-25 01:49:08 -0700541 if (i5100_ferr_nf_mem_any(dw)) {
Arthur Jones8f421c52008-07-25 01:49:04 -0700542
543 pci_read_config_dword(priv->mc, I5100_NERR_NF_MEM, &dw2);
Arthur Jones8f421c52008-07-25 01:49:04 -0700544
Arthur Jonesb238e572008-07-25 01:49:08 -0700545 i5100_read_log(mci, i5100_ferr_nf_mem_chan_indx(dw),
546 i5100_ferr_nf_mem_any(dw),
547 i5100_nerr_nf_mem_any(dw2));
Niklas Söderlunddf95e422011-12-09 13:12:15 -0300548
549 pci_write_config_dword(priv->mc, I5100_NERR_NF_MEM, dw2);
Arthur Jones8f421c52008-07-25 01:49:04 -0700550 }
Niklas Söderlunddf95e422011-12-09 13:12:15 -0300551 pci_write_config_dword(priv->mc, I5100_FERR_NF_MEM, dw);
Arthur Jones8f421c52008-07-25 01:49:04 -0700552}
553
Nils Carlson295439f2009-12-15 16:47:42 -0800554/* The i5100 chipset will scrub the entire memory once, then
555 * set a done bit. Continuous scrubbing is achieved by enqueing
556 * delayed work to a workqueue, checking every few minutes if
557 * the scrubbing has completed and if so reinitiating it.
558 */
559
560static void i5100_refresh_scrubbing(struct work_struct *work)
561{
562 struct delayed_work *i5100_scrubbing = container_of(work,
563 struct delayed_work,
564 work);
565 struct i5100_priv *priv = container_of(i5100_scrubbing,
566 struct i5100_priv,
567 i5100_scrubbing);
568 u32 dw;
569
570 pci_read_config_dword(priv->mc, I5100_MC, &dw);
571
572 if (priv->scrub_enable) {
573
574 pci_read_config_dword(priv->mc, I5100_MC, &dw);
575
576 if (i5100_mc_scrbdone(dw)) {
577 dw |= I5100_MC_SCRBEN_MASK;
578 pci_write_config_dword(priv->mc, I5100_MC, dw);
579 pci_read_config_dword(priv->mc, I5100_MC, &dw);
580 }
581
582 schedule_delayed_work(&(priv->i5100_scrubbing),
583 I5100_SCRUB_REFRESH_RATE);
584 }
585}
586/*
587 * The bandwidth is based on experimentation, feel free to refine it.
588 */
Borislav Petkoveba042a2010-05-25 18:21:07 +0200589static int i5100_set_scrub_rate(struct mem_ctl_info *mci, u32 bandwidth)
Nils Carlson295439f2009-12-15 16:47:42 -0800590{
591 struct i5100_priv *priv = mci->pvt_info;
592 u32 dw;
593
594 pci_read_config_dword(priv->mc, I5100_MC, &dw);
Borislav Petkoveba042a2010-05-25 18:21:07 +0200595 if (bandwidth) {
Nils Carlson295439f2009-12-15 16:47:42 -0800596 priv->scrub_enable = 1;
597 dw |= I5100_MC_SCRBEN_MASK;
598 schedule_delayed_work(&(priv->i5100_scrubbing),
599 I5100_SCRUB_REFRESH_RATE);
600 } else {
601 priv->scrub_enable = 0;
602 dw &= ~I5100_MC_SCRBEN_MASK;
603 cancel_delayed_work(&(priv->i5100_scrubbing));
604 }
605 pci_write_config_dword(priv->mc, I5100_MC, dw);
606
607 pci_read_config_dword(priv->mc, I5100_MC, &dw);
608
Borislav Petkoveba042a2010-05-25 18:21:07 +0200609 bandwidth = 5900000 * i5100_mc_scrben(dw);
Nils Carlson295439f2009-12-15 16:47:42 -0800610
Borislav Petkov39094442010-11-24 19:52:09 +0100611 return bandwidth;
Nils Carlson295439f2009-12-15 16:47:42 -0800612}
613
Borislav Petkov39094442010-11-24 19:52:09 +0100614static int i5100_get_scrub_rate(struct mem_ctl_info *mci)
Nils Carlson295439f2009-12-15 16:47:42 -0800615{
616 struct i5100_priv *priv = mci->pvt_info;
617 u32 dw;
618
619 pci_read_config_dword(priv->mc, I5100_MC, &dw);
620
Borislav Petkov39094442010-11-24 19:52:09 +0100621 return 5900000 * i5100_mc_scrben(dw);
Nils Carlson295439f2009-12-15 16:47:42 -0800622}
623
Arthur Jones8f421c52008-07-25 01:49:04 -0700624static struct pci_dev *pci_get_device_func(unsigned vendor,
625 unsigned device,
626 unsigned func)
627{
628 struct pci_dev *ret = NULL;
629
630 while (1) {
631 ret = pci_get_device(vendor, device, ret);
632
633 if (!ret)
634 break;
635
636 if (PCI_FUNC(ret->devfn) == func)
637 break;
638 }
639
640 return ret;
641}
642
643static unsigned long __devinit i5100_npages(struct mem_ctl_info *mci,
644 int csrow)
645{
646 struct i5100_priv *priv = mci->pvt_info;
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800647 const unsigned chan_rank = i5100_csrow_to_rank(mci, csrow);
648 const unsigned chan = i5100_csrow_to_chan(mci, csrow);
Arthur Jones8f421c52008-07-25 01:49:04 -0700649 unsigned addr_lines;
650
651 /* dimm present? */
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800652 if (!priv->mtr[chan][chan_rank].present)
Arthur Jones8f421c52008-07-25 01:49:04 -0700653 return 0ULL;
654
655 addr_lines =
656 I5100_DIMM_ADDR_LINES +
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800657 priv->mtr[chan][chan_rank].numcol +
658 priv->mtr[chan][chan_rank].numrow +
659 priv->mtr[chan][chan_rank].numbank;
Arthur Jones8f421c52008-07-25 01:49:04 -0700660
661 return (unsigned long)
662 ((unsigned long long) (1ULL << addr_lines) / PAGE_SIZE);
663}
664
665static void __devinit i5100_init_mtr(struct mem_ctl_info *mci)
666{
667 struct i5100_priv *priv = mci->pvt_info;
668 struct pci_dev *mms[2] = { priv->ch0mm, priv->ch1mm };
669 int i;
670
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800671 for (i = 0; i < I5100_CHANNELS; i++) {
Arthur Jones8f421c52008-07-25 01:49:04 -0700672 int j;
673 struct pci_dev *pdev = mms[i];
674
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800675 for (j = 0; j < I5100_MAX_RANKS_PER_CHAN; j++) {
Arthur Jones8f421c52008-07-25 01:49:04 -0700676 const unsigned addr =
677 (j < 4) ? I5100_MTR_0 + j * 2 :
678 I5100_MTR_4 + (j - 4) * 2;
679 u16 w;
680
681 pci_read_config_word(pdev, addr, &w);
682
Arthur Jonesb238e572008-07-25 01:49:08 -0700683 priv->mtr[i][j].present = i5100_mtr_present(w);
684 priv->mtr[i][j].ethrottle = i5100_mtr_ethrottle(w);
685 priv->mtr[i][j].width = 4 + 4 * i5100_mtr_width(w);
686 priv->mtr[i][j].numbank = 2 + i5100_mtr_numbank(w);
687 priv->mtr[i][j].numrow = 13 + i5100_mtr_numrow(w);
688 priv->mtr[i][j].numcol = 10 + i5100_mtr_numcol(w);
Arthur Jones8f421c52008-07-25 01:49:04 -0700689 }
690 }
691}
692
693/*
694 * FIXME: make this into a real i2c adapter (so that dimm-decode
695 * will work)?
696 */
697static int i5100_read_spd_byte(const struct mem_ctl_info *mci,
698 u8 ch, u8 slot, u8 addr, u8 *byte)
699{
700 struct i5100_priv *priv = mci->pvt_info;
701 u16 w;
Arthur Jones8f421c52008-07-25 01:49:04 -0700702 unsigned long et;
703
704 pci_read_config_word(priv->mc, I5100_SPDDATA, &w);
Arthur Jonesb238e572008-07-25 01:49:08 -0700705 if (i5100_spddata_busy(w))
Arthur Jones8f421c52008-07-25 01:49:04 -0700706 return -1;
707
Arthur Jonesb238e572008-07-25 01:49:08 -0700708 pci_write_config_dword(priv->mc, I5100_SPDCMD,
709 i5100_spdcmd_create(0xa, 1, ch * 4 + slot, addr,
710 0, 0));
Arthur Jones8f421c52008-07-25 01:49:04 -0700711
712 /* wait up to 100ms */
713 et = jiffies + HZ / 10;
714 udelay(100);
715 while (1) {
716 pci_read_config_word(priv->mc, I5100_SPDDATA, &w);
Arthur Jonesb238e572008-07-25 01:49:08 -0700717 if (!i5100_spddata_busy(w))
Arthur Jones8f421c52008-07-25 01:49:04 -0700718 break;
719 udelay(100);
720 }
721
Arthur Jonesb238e572008-07-25 01:49:08 -0700722 if (!i5100_spddata_rdo(w) || i5100_spddata_sbe(w))
Arthur Jones8f421c52008-07-25 01:49:04 -0700723 return -1;
724
Arthur Jonesb238e572008-07-25 01:49:08 -0700725 *byte = i5100_spddata_data(w);
Arthur Jones8f421c52008-07-25 01:49:04 -0700726
727 return 0;
728}
729
730/*
731 * fill dimm chip select map
732 *
733 * FIXME:
Arthur Jones8f421c52008-07-25 01:49:04 -0700734 * o not the only way to may chip selects to dimm slots
735 * o investigate if there is some way to obtain this map from the bios
736 */
737static void __devinit i5100_init_dimm_csmap(struct mem_ctl_info *mci)
738{
739 struct i5100_priv *priv = mci->pvt_info;
740 int i;
741
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800742 for (i = 0; i < I5100_MAX_DIMM_SLOTS_PER_CHAN; i++) {
Arthur Jones8f421c52008-07-25 01:49:04 -0700743 int j;
744
745 for (j = 0; j < I5100_MAX_RANKS_PER_DIMM; j++)
746 priv->dimm_csmap[i][j] = -1; /* default NC */
747 }
748
749 /* only 2 chip selects per slot... */
Nils Carlsonbbead212009-12-15 16:47:42 -0800750 if (priv->ranksperchan == 4) {
751 priv->dimm_csmap[0][0] = 0;
752 priv->dimm_csmap[0][1] = 3;
753 priv->dimm_csmap[1][0] = 1;
754 priv->dimm_csmap[1][1] = 2;
755 priv->dimm_csmap[2][0] = 2;
756 priv->dimm_csmap[3][0] = 3;
757 } else {
758 priv->dimm_csmap[0][0] = 0;
759 priv->dimm_csmap[0][1] = 1;
760 priv->dimm_csmap[1][0] = 2;
761 priv->dimm_csmap[1][1] = 3;
762 priv->dimm_csmap[2][0] = 4;
763 priv->dimm_csmap[2][1] = 5;
764 }
Arthur Jones8f421c52008-07-25 01:49:04 -0700765}
766
767static void __devinit i5100_init_dimm_layout(struct pci_dev *pdev,
768 struct mem_ctl_info *mci)
769{
770 struct i5100_priv *priv = mci->pvt_info;
771 int i;
772
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800773 for (i = 0; i < I5100_CHANNELS; i++) {
Arthur Jones8f421c52008-07-25 01:49:04 -0700774 int j;
775
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800776 for (j = 0; j < I5100_MAX_DIMM_SLOTS_PER_CHAN; j++) {
Arthur Jones8f421c52008-07-25 01:49:04 -0700777 u8 rank;
778
779 if (i5100_read_spd_byte(mci, i, j, 5, &rank) < 0)
780 priv->dimm_numrank[i][j] = 0;
781 else
782 priv->dimm_numrank[i][j] = (rank & 3) + 1;
783 }
784 }
785
786 i5100_init_dimm_csmap(mci);
787}
788
789static void __devinit i5100_init_interleaving(struct pci_dev *pdev,
790 struct mem_ctl_info *mci)
791{
792 u16 w;
793 u32 dw;
794 struct i5100_priv *priv = mci->pvt_info;
795 struct pci_dev *mms[2] = { priv->ch0mm, priv->ch1mm };
796 int i;
797
798 pci_read_config_word(pdev, I5100_TOLM, &w);
Arthur Jonesb238e572008-07-25 01:49:08 -0700799 priv->tolm = (u64) i5100_tolm_tolm(w) * 256 * 1024 * 1024;
Arthur Jones8f421c52008-07-25 01:49:04 -0700800
801 pci_read_config_word(pdev, I5100_MIR0, &w);
Arthur Jonesb238e572008-07-25 01:49:08 -0700802 priv->mir[0].limit = (u64) i5100_mir_limit(w) << 28;
803 priv->mir[0].way[1] = i5100_mir_way1(w);
804 priv->mir[0].way[0] = i5100_mir_way0(w);
Arthur Jones8f421c52008-07-25 01:49:04 -0700805
806 pci_read_config_word(pdev, I5100_MIR1, &w);
Arthur Jonesb238e572008-07-25 01:49:08 -0700807 priv->mir[1].limit = (u64) i5100_mir_limit(w) << 28;
808 priv->mir[1].way[1] = i5100_mir_way1(w);
809 priv->mir[1].way[0] = i5100_mir_way0(w);
Arthur Jones8f421c52008-07-25 01:49:04 -0700810
811 pci_read_config_word(pdev, I5100_AMIR_0, &w);
812 priv->amir[0] = w;
813 pci_read_config_word(pdev, I5100_AMIR_1, &w);
814 priv->amir[1] = w;
815
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800816 for (i = 0; i < I5100_CHANNELS; i++) {
Arthur Jones8f421c52008-07-25 01:49:04 -0700817 int j;
818
819 for (j = 0; j < 5; j++) {
820 int k;
821
822 pci_read_config_dword(mms[i], I5100_DMIR + j * 4, &dw);
823
824 priv->dmir[i][j].limit =
Arthur Jonesb238e572008-07-25 01:49:08 -0700825 (u64) i5100_dmir_limit(dw) << 28;
Arthur Jones8f421c52008-07-25 01:49:04 -0700826 for (k = 0; k < I5100_MAX_RANKS_PER_DIMM; k++)
827 priv->dmir[i][j].rank[k] =
Arthur Jonesb238e572008-07-25 01:49:08 -0700828 i5100_dmir_rank(dw, k);
Arthur Jones8f421c52008-07-25 01:49:04 -0700829 }
830 }
831
832 i5100_init_mtr(mci);
833}
834
835static void __devinit i5100_init_csrows(struct mem_ctl_info *mci)
836{
837 int i;
838 unsigned long total_pages = 0UL;
839 struct i5100_priv *priv = mci->pvt_info;
840
841 for (i = 0; i < mci->nr_csrows; i++) {
842 const unsigned long npages = i5100_npages(mci, i);
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800843 const unsigned chan = i5100_csrow_to_chan(mci, i);
Arthur Jones8f421c52008-07-25 01:49:04 -0700844 const unsigned rank = i5100_csrow_to_rank(mci, i);
845
846 if (!npages)
847 continue;
848
849 /*
850 * FIXME: these two are totally bogus -- I don't see how to
851 * map them correctly to this structure...
852 */
853 mci->csrows[i].first_page = total_pages;
854 mci->csrows[i].last_page = total_pages + npages - 1;
855 mci->csrows[i].page_mask = 0UL;
856
857 mci->csrows[i].nr_pages = npages;
858 mci->csrows[i].grain = 32;
859 mci->csrows[i].csrow_idx = i;
860 mci->csrows[i].dtype =
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800861 (priv->mtr[chan][rank].width == 4) ? DEV_X4 : DEV_X8;
Arthur Jones8f421c52008-07-25 01:49:04 -0700862 mci->csrows[i].ue_count = 0;
863 mci->csrows[i].ce_count = 0;
864 mci->csrows[i].mtype = MEM_RDDR2;
865 mci->csrows[i].edac_mode = EDAC_SECDED;
866 mci->csrows[i].mci = mci;
867 mci->csrows[i].nr_channels = 1;
868 mci->csrows[i].channels[0].chan_idx = 0;
869 mci->csrows[i].channels[0].ce_count = 0;
870 mci->csrows[i].channels[0].csrow = mci->csrows + i;
871 snprintf(mci->csrows[i].channels[0].label,
872 sizeof(mci->csrows[i].channels[0].label),
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800873 "DIMM%u", i5100_rank_to_slot(mci, chan, rank));
Arthur Jones8f421c52008-07-25 01:49:04 -0700874
875 total_pages += npages;
876 }
877}
878
879static int __devinit i5100_init_one(struct pci_dev *pdev,
880 const struct pci_device_id *id)
881{
882 int rc;
883 struct mem_ctl_info *mci;
884 struct i5100_priv *priv;
885 struct pci_dev *ch0mm, *ch1mm;
886 int ret = 0;
887 u32 dw;
888 int ranksperch;
889
890 if (PCI_FUNC(pdev->devfn) != 1)
891 return -ENODEV;
892
893 rc = pci_enable_device(pdev);
894 if (rc < 0) {
895 ret = rc;
896 goto bail;
897 }
898
Arthur Jones43920a52008-07-25 01:49:06 -0700899 /* ECC enabled? */
900 pci_read_config_dword(pdev, I5100_MC, &dw);
Arthur Jonesb238e572008-07-25 01:49:08 -0700901 if (!i5100_mc_errdeten(dw)) {
Arthur Jones43920a52008-07-25 01:49:06 -0700902 printk(KERN_INFO "i5100_edac: ECC not enabled.\n");
903 ret = -ENODEV;
Arthur Jonesb238e572008-07-25 01:49:08 -0700904 goto bail_pdev;
Arthur Jones43920a52008-07-25 01:49:06 -0700905 }
906
Arthur Jones8f421c52008-07-25 01:49:04 -0700907 /* figure out how many ranks, from strapped state of 48GB_Mode input */
908 pci_read_config_dword(pdev, I5100_MS, &dw);
909 ranksperch = !!(dw & (1 << 8)) * 2 + 4;
910
Arthur Jones178d5a72008-07-25 01:49:06 -0700911 /* enable error reporting... */
912 pci_read_config_dword(pdev, I5100_EMASK_MEM, &dw);
913 dw &= ~I5100_FERR_NF_MEM_ANY_MASK;
914 pci_write_config_dword(pdev, I5100_EMASK_MEM, dw);
915
Arthur Jones8f421c52008-07-25 01:49:04 -0700916 /* device 21, func 0, Channel 0 Memory Map, Error Flag/Mask, etc... */
917 ch0mm = pci_get_device_func(PCI_VENDOR_ID_INTEL,
918 PCI_DEVICE_ID_INTEL_5100_21, 0);
Arthur Jonesb238e572008-07-25 01:49:08 -0700919 if (!ch0mm) {
920 ret = -ENODEV;
921 goto bail_pdev;
922 }
Arthur Jones8f421c52008-07-25 01:49:04 -0700923
924 rc = pci_enable_device(ch0mm);
925 if (rc < 0) {
926 ret = rc;
927 goto bail_ch0;
928 }
929
930 /* device 22, func 0, Channel 1 Memory Map, Error Flag/Mask, etc... */
931 ch1mm = pci_get_device_func(PCI_VENDOR_ID_INTEL,
932 PCI_DEVICE_ID_INTEL_5100_22, 0);
933 if (!ch1mm) {
934 ret = -ENODEV;
Arthur Jonesb238e572008-07-25 01:49:08 -0700935 goto bail_disable_ch0;
Arthur Jones8f421c52008-07-25 01:49:04 -0700936 }
937
938 rc = pci_enable_device(ch1mm);
939 if (rc < 0) {
940 ret = rc;
941 goto bail_ch1;
942 }
943
944 mci = edac_mc_alloc(sizeof(*priv), ranksperch * 2, 1, 0);
945 if (!mci) {
946 ret = -ENOMEM;
Arthur Jonesb238e572008-07-25 01:49:08 -0700947 goto bail_disable_ch1;
Arthur Jones8f421c52008-07-25 01:49:04 -0700948 }
949
950 mci->dev = &pdev->dev;
951
952 priv = mci->pvt_info;
Nils Carlsonb18dfd02009-12-15 16:47:40 -0800953 priv->ranksperchan = ranksperch;
Arthur Jones8f421c52008-07-25 01:49:04 -0700954 priv->mc = pdev;
955 priv->ch0mm = ch0mm;
956 priv->ch1mm = ch1mm;
957
Nils Carlson295439f2009-12-15 16:47:42 -0800958 INIT_DELAYED_WORK(&(priv->i5100_scrubbing), i5100_refresh_scrubbing);
959
960 /* If scrubbing was already enabled by the bios, start maintaining it */
961 pci_read_config_dword(pdev, I5100_MC, &dw);
962 if (i5100_mc_scrben(dw)) {
963 priv->scrub_enable = 1;
964 schedule_delayed_work(&(priv->i5100_scrubbing),
965 I5100_SCRUB_REFRESH_RATE);
966 }
967
Arthur Jones8f421c52008-07-25 01:49:04 -0700968 i5100_init_dimm_layout(pdev, mci);
969 i5100_init_interleaving(pdev, mci);
970
971 mci->mtype_cap = MEM_FLAG_FB_DDR2;
972 mci->edac_ctl_cap = EDAC_FLAG_SECDED;
973 mci->edac_cap = EDAC_FLAG_SECDED;
974 mci->mod_name = "i5100_edac.c";
975 mci->mod_ver = "not versioned";
976 mci->ctl_name = "i5100";
977 mci->dev_name = pci_name(pdev);
Arthur Jonesb238e572008-07-25 01:49:08 -0700978 mci->ctl_page_to_phys = NULL;
Arthur Jones8f421c52008-07-25 01:49:04 -0700979
980 mci->edac_check = i5100_check_error;
Nils Carlson295439f2009-12-15 16:47:42 -0800981 mci->set_sdram_scrub_rate = i5100_set_scrub_rate;
982 mci->get_sdram_scrub_rate = i5100_get_scrub_rate;
Arthur Jones8f421c52008-07-25 01:49:04 -0700983
984 i5100_init_csrows(mci);
985
986 /* this strange construction seems to be in every driver, dunno why */
987 switch (edac_op_state) {
988 case EDAC_OPSTATE_POLL:
989 case EDAC_OPSTATE_NMI:
990 break;
991 default:
992 edac_op_state = EDAC_OPSTATE_POLL;
993 break;
994 }
995
996 if (edac_mc_add_mc(mci)) {
997 ret = -ENODEV;
Nils Carlson295439f2009-12-15 16:47:42 -0800998 goto bail_scrub;
Arthur Jones8f421c52008-07-25 01:49:04 -0700999 }
1000
Arthur Jonesb238e572008-07-25 01:49:08 -07001001 return ret;
Arthur Jones8f421c52008-07-25 01:49:04 -07001002
Nils Carlson295439f2009-12-15 16:47:42 -08001003bail_scrub:
1004 priv->scrub_enable = 0;
1005 cancel_delayed_work_sync(&(priv->i5100_scrubbing));
Arthur Jones8f421c52008-07-25 01:49:04 -07001006 edac_mc_free(mci);
1007
Arthur Jonesb238e572008-07-25 01:49:08 -07001008bail_disable_ch1:
1009 pci_disable_device(ch1mm);
1010
Arthur Jones8f421c52008-07-25 01:49:04 -07001011bail_ch1:
1012 pci_dev_put(ch1mm);
1013
Arthur Jonesb238e572008-07-25 01:49:08 -07001014bail_disable_ch0:
1015 pci_disable_device(ch0mm);
1016
Arthur Jones8f421c52008-07-25 01:49:04 -07001017bail_ch0:
1018 pci_dev_put(ch0mm);
1019
Arthur Jonesb238e572008-07-25 01:49:08 -07001020bail_pdev:
1021 pci_disable_device(pdev);
1022
Arthur Jones8f421c52008-07-25 01:49:04 -07001023bail:
1024 return ret;
1025}
1026
1027static void __devexit i5100_remove_one(struct pci_dev *pdev)
1028{
1029 struct mem_ctl_info *mci;
1030 struct i5100_priv *priv;
1031
1032 mci = edac_mc_del_mc(&pdev->dev);
1033
1034 if (!mci)
1035 return;
1036
1037 priv = mci->pvt_info;
Nils Carlson295439f2009-12-15 16:47:42 -08001038
1039 priv->scrub_enable = 0;
1040 cancel_delayed_work_sync(&(priv->i5100_scrubbing));
1041
Arthur Jonesb238e572008-07-25 01:49:08 -07001042 pci_disable_device(pdev);
1043 pci_disable_device(priv->ch0mm);
1044 pci_disable_device(priv->ch1mm);
Arthur Jones8f421c52008-07-25 01:49:04 -07001045 pci_dev_put(priv->ch0mm);
1046 pci_dev_put(priv->ch1mm);
1047
1048 edac_mc_free(mci);
1049}
1050
Lionel Debroux36c46f32012-02-27 07:41:47 +01001051static DEFINE_PCI_DEVICE_TABLE(i5100_pci_tbl) = {
Arthur Jones8f421c52008-07-25 01:49:04 -07001052 /* Device 16, Function 0, Channel 0 Memory Map, Error Flag/Mask, ... */
1053 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5100_16) },
1054 { 0, }
1055};
1056MODULE_DEVICE_TABLE(pci, i5100_pci_tbl);
1057
1058static struct pci_driver i5100_driver = {
1059 .name = KBUILD_BASENAME,
1060 .probe = i5100_init_one,
1061 .remove = __devexit_p(i5100_remove_one),
1062 .id_table = i5100_pci_tbl,
1063};
1064
1065static int __init i5100_init(void)
1066{
1067 int pci_rc;
1068
1069 pci_rc = pci_register_driver(&i5100_driver);
1070
1071 return (pci_rc < 0) ? pci_rc : 0;
1072}
1073
1074static void __exit i5100_exit(void)
1075{
1076 pci_unregister_driver(&i5100_driver);
1077}
1078
1079module_init(i5100_init);
1080module_exit(i5100_exit);
1081
1082MODULE_LICENSE("GPL");
1083MODULE_AUTHOR
1084 ("Arthur Jones <ajones@riverbed.com>");
1085MODULE_DESCRIPTION("MC Driver for Intel I5100 memory controllers");