2 * Intel 5100 Memory Controllers kernel module
4 * This file may be distributed under the terms of the
5 * GNU General Public License.
7 * This module is based on the following document:
9 * Intel 5100X Chipset Memory Controller Hub (MCH) - Datasheet
10 * http://download.intel.com/design/chipsets/datashts/318378.pdf
12 * The intel 5100 has two independent channels. EDAC core currently
13 * can not reflect this configuration so instead the chip-select
14 * rows for each respective channel are layed out one after another,
15 * the first half belonging to channel 0, the second half belonging
18 #include <linux/module.h>
19 #include <linux/init.h>
20 #include <linux/pci.h>
21 #include <linux/pci_ids.h>
22 #include <linux/slab.h>
23 #include <linux/edac.h>
24 #include <linux/delay.h>
25 #include <linux/mmzone.h>
27 #include "edac_core.h"
29 /* register addresses */
31 /* device 16, func 1 */
32 #define I5100_MC 0x40 /* Memory Control Register */
33 #define I5100_MC_SCRBEN_MASK (1 << 7)
34 #define I5100_MC_SCRBDONE_MASK (1 << 4)
35 #define I5100_MS 0x44 /* Memory Status Register */
36 #define I5100_SPDDATA 0x48 /* Serial Presence Detect Status Reg */
37 #define I5100_SPDCMD 0x4c /* Serial Presence Detect Command Reg */
38 #define I5100_TOLM 0x6c /* Top of Low Memory */
39 #define I5100_MIR0 0x80 /* Memory Interleave Range 0 */
40 #define I5100_MIR1 0x84 /* Memory Interleave Range 1 */
41 #define I5100_AMIR_0 0x8c /* Adjusted Memory Interleave Range 0 */
42 #define I5100_AMIR_1 0x90 /* Adjusted Memory Interleave Range 1 */
43 #define I5100_FERR_NF_MEM 0xa0 /* MC First Non Fatal Errors */
44 #define I5100_FERR_NF_MEM_M16ERR_MASK (1 << 16)
45 #define I5100_FERR_NF_MEM_M15ERR_MASK (1 << 15)
46 #define I5100_FERR_NF_MEM_M14ERR_MASK (1 << 14)
47 #define I5100_FERR_NF_MEM_M12ERR_MASK (1 << 12)
48 #define I5100_FERR_NF_MEM_M11ERR_MASK (1 << 11)
49 #define I5100_FERR_NF_MEM_M10ERR_MASK (1 << 10)
50 #define I5100_FERR_NF_MEM_M6ERR_MASK (1 << 6)
51 #define I5100_FERR_NF_MEM_M5ERR_MASK (1 << 5)
52 #define I5100_FERR_NF_MEM_M4ERR_MASK (1 << 4)
53 #define I5100_FERR_NF_MEM_M1ERR_MASK 1
54 #define I5100_FERR_NF_MEM_ANY_MASK \
55 (I5100_FERR_NF_MEM_M16ERR_MASK | \
56 I5100_FERR_NF_MEM_M15ERR_MASK | \
57 I5100_FERR_NF_MEM_M14ERR_MASK | \
58 I5100_FERR_NF_MEM_M12ERR_MASK | \
59 I5100_FERR_NF_MEM_M11ERR_MASK | \
60 I5100_FERR_NF_MEM_M10ERR_MASK | \
61 I5100_FERR_NF_MEM_M6ERR_MASK | \
62 I5100_FERR_NF_MEM_M5ERR_MASK | \
63 I5100_FERR_NF_MEM_M4ERR_MASK | \
64 I5100_FERR_NF_MEM_M1ERR_MASK)
65 #define I5100_NERR_NF_MEM 0xa4 /* MC Next Non-Fatal Errors */
66 #define I5100_EMASK_MEM 0xa8 /* MC Error Mask Register */
68 /* device 21 and 22, func 0 */
69 #define I5100_MTR_0 0x154 /* Memory Technology Registers 0-3 */
70 #define I5100_DMIR 0x15c /* DIMM Interleave Range */
71 #define I5100_VALIDLOG 0x18c /* Valid Log Markers */
72 #define I5100_NRECMEMA 0x190 /* Non-Recoverable Memory Error Log Reg A */
73 #define I5100_NRECMEMB 0x194 /* Non-Recoverable Memory Error Log Reg B */
74 #define I5100_REDMEMA 0x198 /* Recoverable Memory Data Error Log Reg A */
75 #define I5100_REDMEMB 0x19c /* Recoverable Memory Data Error Log Reg B */
76 #define I5100_RECMEMA 0x1a0 /* Recoverable Memory Error Log Reg A */
77 #define I5100_RECMEMB 0x1a4 /* Recoverable Memory Error Log Reg B */
78 #define I5100_MTR_4 0x1b0 /* Memory Technology Registers 4,5 */
80 /* bit field accessors */
82 static inline u32
i5100_mc_scrben(u32 mc
)
87 static inline u32
i5100_mc_errdeten(u32 mc
)
92 static inline u32
i5100_mc_scrbdone(u32 mc
)
97 static inline u16
i5100_spddata_rdo(u16 a
)
102 static inline u16
i5100_spddata_sbe(u16 a
)
107 static inline u16
i5100_spddata_busy(u16 a
)
112 static inline u16
i5100_spddata_data(u16 a
)
114 return a
& ((1 << 8) - 1);
117 static inline u32
i5100_spdcmd_create(u32 dti
, u32 ckovrd
, u32 sa
, u32 ba
,
120 return ((dti
& ((1 << 4) - 1)) << 28) |
121 ((ckovrd
& 1) << 27) |
122 ((sa
& ((1 << 3) - 1)) << 24) |
123 ((ba
& ((1 << 8) - 1)) << 16) |
124 ((data
& ((1 << 8) - 1)) << 8) |
128 static inline u16
i5100_tolm_tolm(u16 a
)
130 return a
>> 12 & ((1 << 4) - 1);
133 static inline u16
i5100_mir_limit(u16 a
)
135 return a
>> 4 & ((1 << 12) - 1);
138 static inline u16
i5100_mir_way1(u16 a
)
143 static inline u16
i5100_mir_way0(u16 a
)
148 static inline u32
i5100_ferr_nf_mem_chan_indx(u32 a
)
153 static inline u32
i5100_ferr_nf_mem_any(u32 a
)
155 return a
& I5100_FERR_NF_MEM_ANY_MASK
;
158 static inline u32
i5100_nerr_nf_mem_any(u32 a
)
160 return i5100_ferr_nf_mem_any(a
);
163 static inline u32
i5100_dmir_limit(u32 a
)
165 return a
>> 16 & ((1 << 11) - 1);
168 static inline u32
i5100_dmir_rank(u32 a
, u32 i
)
170 return a
>> (4 * i
) & ((1 << 2) - 1);
173 static inline u16
i5100_mtr_present(u16 a
)
178 static inline u16
i5100_mtr_ethrottle(u16 a
)
183 static inline u16
i5100_mtr_width(u16 a
)
188 static inline u16
i5100_mtr_numbank(u16 a
)
193 static inline u16
i5100_mtr_numrow(u16 a
)
195 return a
>> 2 & ((1 << 2) - 1);
198 static inline u16
i5100_mtr_numcol(u16 a
)
200 return a
& ((1 << 2) - 1);
204 static inline u32
i5100_validlog_redmemvalid(u32 a
)
209 static inline u32
i5100_validlog_recmemvalid(u32 a
)
214 static inline u32
i5100_validlog_nrecmemvalid(u32 a
)
219 static inline u32
i5100_nrecmema_merr(u32 a
)
221 return a
>> 15 & ((1 << 5) - 1);
224 static inline u32
i5100_nrecmema_bank(u32 a
)
226 return a
>> 12 & ((1 << 3) - 1);
229 static inline u32
i5100_nrecmema_rank(u32 a
)
231 return a
>> 8 & ((1 << 3) - 1);
234 static inline u32
i5100_nrecmema_dm_buf_id(u32 a
)
236 return a
& ((1 << 8) - 1);
239 static inline u32
i5100_nrecmemb_cas(u32 a
)
241 return a
>> 16 & ((1 << 13) - 1);
244 static inline u32
i5100_nrecmemb_ras(u32 a
)
246 return a
& ((1 << 16) - 1);
249 static inline u32
i5100_redmemb_ecc_locator(u32 a
)
251 return a
& ((1 << 18) - 1);
254 static inline u32
i5100_recmema_merr(u32 a
)
256 return i5100_nrecmema_merr(a
);
259 static inline u32
i5100_recmema_bank(u32 a
)
261 return i5100_nrecmema_bank(a
);
264 static inline u32
i5100_recmema_rank(u32 a
)
266 return i5100_nrecmema_rank(a
);
269 static inline u32
i5100_recmema_dm_buf_id(u32 a
)
271 return i5100_nrecmema_dm_buf_id(a
);
274 static inline u32
i5100_recmemb_cas(u32 a
)
276 return i5100_nrecmemb_cas(a
);
279 static inline u32
i5100_recmemb_ras(u32 a
)
281 return i5100_nrecmemb_ras(a
);
284 /* some generic limits */
285 #define I5100_MAX_RANKS_PER_CHAN 6
286 #define I5100_CHANNELS 2
287 #define I5100_MAX_RANKS_PER_DIMM 4
288 #define I5100_DIMM_ADDR_LINES (6 - 3) /* 64 bits / 8 bits per byte */
289 #define I5100_MAX_DIMM_SLOTS_PER_CHAN 4
290 #define I5100_MAX_RANK_INTERLEAVE 4
291 #define I5100_MAX_DMIRS 5
292 #define I5100_SCRUB_REFRESH_RATE (5 * 60 * HZ)
295 /* ranks on each dimm -- 0 maps to not present -- obtained via SPD */
296 int dimm_numrank
[I5100_CHANNELS
][I5100_MAX_DIMM_SLOTS_PER_CHAN
];
299 * mainboard chip select map -- maps i5100 chip selects to
300 * DIMM slot chip selects. In the case of only 4 ranks per
301 * channel, the mapping is fairly obvious but not unique.
302 * we map -1 -> NC and assume both channels use the same
306 int dimm_csmap
[I5100_MAX_DIMM_SLOTS_PER_CHAN
][I5100_MAX_RANKS_PER_DIMM
];
308 /* memory interleave range */
312 } mir
[I5100_CHANNELS
];
314 /* adjusted memory interleave range register */
315 unsigned amir
[I5100_CHANNELS
];
317 /* dimm interleave range */
319 unsigned rank
[I5100_MAX_RANK_INTERLEAVE
];
321 } dmir
[I5100_CHANNELS
][I5100_MAX_DMIRS
];
323 /* memory technology registers... */
325 unsigned present
; /* 0 or 1 */
326 unsigned ethrottle
; /* 0 or 1 */
327 unsigned width
; /* 4 or 8 bits */
328 unsigned numbank
; /* 2 or 3 lines */
329 unsigned numrow
; /* 13 .. 16 lines */
330 unsigned numcol
; /* 11 .. 12 lines */
331 } mtr
[I5100_CHANNELS
][I5100_MAX_RANKS_PER_CHAN
];
333 u64 tolm
; /* top of low memory in bytes */
334 unsigned ranksperchan
; /* number of ranks per channel */
336 struct pci_dev
*mc
; /* device 16 func 1 */
337 struct pci_dev
*ch0mm
; /* device 21 func 0 */
338 struct pci_dev
*ch1mm
; /* device 22 func 0 */
340 struct delayed_work i5100_scrubbing
;
344 /* map a rank/chan to a slot number on the mainboard */
345 static int i5100_rank_to_slot(const struct mem_ctl_info
*mci
,
348 const struct i5100_priv
*priv
= mci
->pvt_info
;
351 for (i
= 0; i
< I5100_MAX_DIMM_SLOTS_PER_CHAN
; i
++) {
353 const int numrank
= priv
->dimm_numrank
[chan
][i
];
355 for (j
= 0; j
< numrank
; j
++)
356 if (priv
->dimm_csmap
[i
][j
] == rank
)
363 static const char *i5100_err_msg(unsigned err
)
365 static const char *merrs
[] = {
367 "uncorrectable data ECC on replay", /* 1 */
370 "aliased uncorrectable demand data ECC", /* 4 */
371 "aliased uncorrectable spare-copy data ECC", /* 5 */
372 "aliased uncorrectable patrol data ECC", /* 6 */
376 "non-aliased uncorrectable demand data ECC", /* 10 */
377 "non-aliased uncorrectable spare-copy data ECC", /* 11 */
378 "non-aliased uncorrectable patrol data ECC", /* 12 */
380 "correctable demand data ECC", /* 14 */
381 "correctable spare-copy data ECC", /* 15 */
382 "correctable patrol data ECC", /* 16 */
384 "SPD protocol error", /* 18 */
386 "spare copy initiated", /* 20 */
387 "spare copy completed", /* 21 */
391 for (i
= 0; i
< ARRAY_SIZE(merrs
); i
++)
398 /* convert csrow index into a rank (per channel -- 0..5) */
399 static int i5100_csrow_to_rank(const struct mem_ctl_info
*mci
, int csrow
)
401 const struct i5100_priv
*priv
= mci
->pvt_info
;
403 return csrow
% priv
->ranksperchan
;
406 /* convert csrow index into a channel (0..1) */
407 static int i5100_csrow_to_chan(const struct mem_ctl_info
*mci
, int csrow
)
409 const struct i5100_priv
*priv
= mci
->pvt_info
;
411 return csrow
/ priv
->ranksperchan
;
414 static unsigned i5100_rank_to_csrow(const struct mem_ctl_info
*mci
,
417 const struct i5100_priv
*priv
= mci
->pvt_info
;
419 return chan
* priv
->ranksperchan
+ rank
;
422 static void i5100_handle_ce(struct mem_ctl_info
*mci
,
426 unsigned long syndrome
,
431 const int csrow
= i5100_rank_to_csrow(mci
, chan
, rank
);
434 "CE chan %d, bank %u, rank %u, syndrome 0x%lx, "
435 "cas %u, ras %u, csrow %u, label \"%s\": %s\n",
436 chan
, bank
, rank
, syndrome
, cas
, ras
,
437 csrow
, mci
->csrows
[csrow
].channels
[0].label
, msg
);
440 mci
->csrows
[csrow
].ce_count
++;
441 mci
->csrows
[csrow
].channels
[0].ce_count
++;
444 static void i5100_handle_ue(struct mem_ctl_info
*mci
,
448 unsigned long syndrome
,
453 const int csrow
= i5100_rank_to_csrow(mci
, chan
, rank
);
456 "UE chan %d, bank %u, rank %u, syndrome 0x%lx, "
457 "cas %u, ras %u, csrow %u, label \"%s\": %s\n",
458 chan
, bank
, rank
, syndrome
, cas
, ras
,
459 csrow
, mci
->csrows
[csrow
].channels
[0].label
, msg
);
462 mci
->csrows
[csrow
].ue_count
++;
465 static void i5100_read_log(struct mem_ctl_info
*mci
, int chan
,
468 struct i5100_priv
*priv
= mci
->pvt_info
;
469 struct pci_dev
*pdev
= (chan
) ? priv
->ch1mm
: priv
->ch0mm
;
472 unsigned syndrome
= 0;
473 unsigned ecc_loc
= 0;
480 pci_read_config_dword(pdev
, I5100_VALIDLOG
, &dw
);
482 if (i5100_validlog_redmemvalid(dw
)) {
483 pci_read_config_dword(pdev
, I5100_REDMEMA
, &dw2
);
485 pci_read_config_dword(pdev
, I5100_REDMEMB
, &dw2
);
486 ecc_loc
= i5100_redmemb_ecc_locator(dw2
);
489 if (i5100_validlog_recmemvalid(dw
)) {
492 pci_read_config_dword(pdev
, I5100_RECMEMA
, &dw2
);
493 merr
= i5100_recmema_merr(dw2
);
494 bank
= i5100_recmema_bank(dw2
);
495 rank
= i5100_recmema_rank(dw2
);
497 pci_read_config_dword(pdev
, I5100_RECMEMB
, &dw2
);
498 cas
= i5100_recmemb_cas(dw2
);
499 ras
= i5100_recmemb_ras(dw2
);
501 /* FIXME: not really sure if this is what merr is...
504 msg
= i5100_err_msg(ferr
);
506 msg
= i5100_err_msg(nerr
);
508 i5100_handle_ce(mci
, chan
, bank
, rank
, syndrome
, cas
, ras
, msg
);
511 if (i5100_validlog_nrecmemvalid(dw
)) {
514 pci_read_config_dword(pdev
, I5100_NRECMEMA
, &dw2
);
515 merr
= i5100_nrecmema_merr(dw2
);
516 bank
= i5100_nrecmema_bank(dw2
);
517 rank
= i5100_nrecmema_rank(dw2
);
519 pci_read_config_dword(pdev
, I5100_NRECMEMB
, &dw2
);
520 cas
= i5100_nrecmemb_cas(dw2
);
521 ras
= i5100_nrecmemb_ras(dw2
);
523 /* FIXME: not really sure if this is what merr is...
526 msg
= i5100_err_msg(ferr
);
528 msg
= i5100_err_msg(nerr
);
530 i5100_handle_ue(mci
, chan
, bank
, rank
, syndrome
, cas
, ras
, msg
);
533 pci_write_config_dword(pdev
, I5100_VALIDLOG
, dw
);
536 static void i5100_check_error(struct mem_ctl_info
*mci
)
538 struct i5100_priv
*priv
= mci
->pvt_info
;
542 pci_read_config_dword(priv
->mc
, I5100_FERR_NF_MEM
, &dw
);
543 if (i5100_ferr_nf_mem_any(dw
)) {
546 pci_read_config_dword(priv
->mc
, I5100_NERR_NF_MEM
, &dw2
);
548 pci_write_config_dword(priv
->mc
, I5100_NERR_NF_MEM
,
550 pci_write_config_dword(priv
->mc
, I5100_FERR_NF_MEM
, dw
);
552 i5100_read_log(mci
, i5100_ferr_nf_mem_chan_indx(dw
),
553 i5100_ferr_nf_mem_any(dw
),
554 i5100_nerr_nf_mem_any(dw2
));
558 /* The i5100 chipset will scrub the entire memory once, then
559 * set a done bit. Continuous scrubbing is achieved by enqueing
560 * delayed work to a workqueue, checking every few minutes if
561 * the scrubbing has completed and if so reinitiating it.
564 static void i5100_refresh_scrubbing(struct work_struct
*work
)
566 struct delayed_work
*i5100_scrubbing
= container_of(work
,
569 struct i5100_priv
*priv
= container_of(i5100_scrubbing
,
574 pci_read_config_dword(priv
->mc
, I5100_MC
, &dw
);
576 if (priv
->scrub_enable
) {
578 pci_read_config_dword(priv
->mc
, I5100_MC
, &dw
);
580 if (i5100_mc_scrbdone(dw
)) {
581 dw
|= I5100_MC_SCRBEN_MASK
;
582 pci_write_config_dword(priv
->mc
, I5100_MC
, dw
);
583 pci_read_config_dword(priv
->mc
, I5100_MC
, &dw
);
586 schedule_delayed_work(&(priv
->i5100_scrubbing
),
587 I5100_SCRUB_REFRESH_RATE
);
591 * The bandwidth is based on experimentation, feel free to refine it.
593 static int i5100_set_scrub_rate(struct mem_ctl_info
*mci
,
596 struct i5100_priv
*priv
= mci
->pvt_info
;
599 pci_read_config_dword(priv
->mc
, I5100_MC
, &dw
);
601 priv
->scrub_enable
= 1;
602 dw
|= I5100_MC_SCRBEN_MASK
;
603 schedule_delayed_work(&(priv
->i5100_scrubbing
),
604 I5100_SCRUB_REFRESH_RATE
);
606 priv
->scrub_enable
= 0;
607 dw
&= ~I5100_MC_SCRBEN_MASK
;
608 cancel_delayed_work(&(priv
->i5100_scrubbing
));
610 pci_write_config_dword(priv
->mc
, I5100_MC
, dw
);
612 pci_read_config_dword(priv
->mc
, I5100_MC
, &dw
);
614 *bandwidth
= 5900000 * i5100_mc_scrben(dw
);
619 static int i5100_get_scrub_rate(struct mem_ctl_info
*mci
,
622 struct i5100_priv
*priv
= mci
->pvt_info
;
625 pci_read_config_dword(priv
->mc
, I5100_MC
, &dw
);
627 *bandwidth
= 5900000 * i5100_mc_scrben(dw
);
632 static struct pci_dev
*pci_get_device_func(unsigned vendor
,
636 struct pci_dev
*ret
= NULL
;
639 ret
= pci_get_device(vendor
, device
, ret
);
644 if (PCI_FUNC(ret
->devfn
) == func
)
651 static unsigned long __devinit
i5100_npages(struct mem_ctl_info
*mci
,
654 struct i5100_priv
*priv
= mci
->pvt_info
;
655 const unsigned chan_rank
= i5100_csrow_to_rank(mci
, csrow
);
656 const unsigned chan
= i5100_csrow_to_chan(mci
, csrow
);
660 if (!priv
->mtr
[chan
][chan_rank
].present
)
664 I5100_DIMM_ADDR_LINES
+
665 priv
->mtr
[chan
][chan_rank
].numcol
+
666 priv
->mtr
[chan
][chan_rank
].numrow
+
667 priv
->mtr
[chan
][chan_rank
].numbank
;
669 return (unsigned long)
670 ((unsigned long long) (1ULL << addr_lines
) / PAGE_SIZE
);
673 static void __devinit
i5100_init_mtr(struct mem_ctl_info
*mci
)
675 struct i5100_priv
*priv
= mci
->pvt_info
;
676 struct pci_dev
*mms
[2] = { priv
->ch0mm
, priv
->ch1mm
};
679 for (i
= 0; i
< I5100_CHANNELS
; i
++) {
681 struct pci_dev
*pdev
= mms
[i
];
683 for (j
= 0; j
< I5100_MAX_RANKS_PER_CHAN
; j
++) {
684 const unsigned addr
=
685 (j
< 4) ? I5100_MTR_0
+ j
* 2 :
686 I5100_MTR_4
+ (j
- 4) * 2;
689 pci_read_config_word(pdev
, addr
, &w
);
691 priv
->mtr
[i
][j
].present
= i5100_mtr_present(w
);
692 priv
->mtr
[i
][j
].ethrottle
= i5100_mtr_ethrottle(w
);
693 priv
->mtr
[i
][j
].width
= 4 + 4 * i5100_mtr_width(w
);
694 priv
->mtr
[i
][j
].numbank
= 2 + i5100_mtr_numbank(w
);
695 priv
->mtr
[i
][j
].numrow
= 13 + i5100_mtr_numrow(w
);
696 priv
->mtr
[i
][j
].numcol
= 10 + i5100_mtr_numcol(w
);
702 * FIXME: make this into a real i2c adapter (so that dimm-decode
705 static int i5100_read_spd_byte(const struct mem_ctl_info
*mci
,
706 u8 ch
, u8 slot
, u8 addr
, u8
*byte
)
708 struct i5100_priv
*priv
= mci
->pvt_info
;
712 pci_read_config_word(priv
->mc
, I5100_SPDDATA
, &w
);
713 if (i5100_spddata_busy(w
))
716 pci_write_config_dword(priv
->mc
, I5100_SPDCMD
,
717 i5100_spdcmd_create(0xa, 1, ch
* 4 + slot
, addr
,
720 /* wait up to 100ms */
721 et
= jiffies
+ HZ
/ 10;
724 pci_read_config_word(priv
->mc
, I5100_SPDDATA
, &w
);
725 if (!i5100_spddata_busy(w
))
730 if (!i5100_spddata_rdo(w
) || i5100_spddata_sbe(w
))
733 *byte
= i5100_spddata_data(w
);
739 * fill dimm chip select map
742 * o not the only way to may chip selects to dimm slots
743 * o investigate if there is some way to obtain this map from the bios
745 static void __devinit
i5100_init_dimm_csmap(struct mem_ctl_info
*mci
)
747 struct i5100_priv
*priv
= mci
->pvt_info
;
750 for (i
= 0; i
< I5100_MAX_DIMM_SLOTS_PER_CHAN
; i
++) {
753 for (j
= 0; j
< I5100_MAX_RANKS_PER_DIMM
; j
++)
754 priv
->dimm_csmap
[i
][j
] = -1; /* default NC */
757 /* only 2 chip selects per slot... */
758 if (priv
->ranksperchan
== 4) {
759 priv
->dimm_csmap
[0][0] = 0;
760 priv
->dimm_csmap
[0][1] = 3;
761 priv
->dimm_csmap
[1][0] = 1;
762 priv
->dimm_csmap
[1][1] = 2;
763 priv
->dimm_csmap
[2][0] = 2;
764 priv
->dimm_csmap
[3][0] = 3;
766 priv
->dimm_csmap
[0][0] = 0;
767 priv
->dimm_csmap
[0][1] = 1;
768 priv
->dimm_csmap
[1][0] = 2;
769 priv
->dimm_csmap
[1][1] = 3;
770 priv
->dimm_csmap
[2][0] = 4;
771 priv
->dimm_csmap
[2][1] = 5;
775 static void __devinit
i5100_init_dimm_layout(struct pci_dev
*pdev
,
776 struct mem_ctl_info
*mci
)
778 struct i5100_priv
*priv
= mci
->pvt_info
;
781 for (i
= 0; i
< I5100_CHANNELS
; i
++) {
784 for (j
= 0; j
< I5100_MAX_DIMM_SLOTS_PER_CHAN
; j
++) {
787 if (i5100_read_spd_byte(mci
, i
, j
, 5, &rank
) < 0)
788 priv
->dimm_numrank
[i
][j
] = 0;
790 priv
->dimm_numrank
[i
][j
] = (rank
& 3) + 1;
794 i5100_init_dimm_csmap(mci
);
797 static void __devinit
i5100_init_interleaving(struct pci_dev
*pdev
,
798 struct mem_ctl_info
*mci
)
802 struct i5100_priv
*priv
= mci
->pvt_info
;
803 struct pci_dev
*mms
[2] = { priv
->ch0mm
, priv
->ch1mm
};
806 pci_read_config_word(pdev
, I5100_TOLM
, &w
);
807 priv
->tolm
= (u64
) i5100_tolm_tolm(w
) * 256 * 1024 * 1024;
809 pci_read_config_word(pdev
, I5100_MIR0
, &w
);
810 priv
->mir
[0].limit
= (u64
) i5100_mir_limit(w
) << 28;
811 priv
->mir
[0].way
[1] = i5100_mir_way1(w
);
812 priv
->mir
[0].way
[0] = i5100_mir_way0(w
);
814 pci_read_config_word(pdev
, I5100_MIR1
, &w
);
815 priv
->mir
[1].limit
= (u64
) i5100_mir_limit(w
) << 28;
816 priv
->mir
[1].way
[1] = i5100_mir_way1(w
);
817 priv
->mir
[1].way
[0] = i5100_mir_way0(w
);
819 pci_read_config_word(pdev
, I5100_AMIR_0
, &w
);
821 pci_read_config_word(pdev
, I5100_AMIR_1
, &w
);
824 for (i
= 0; i
< I5100_CHANNELS
; i
++) {
827 for (j
= 0; j
< 5; j
++) {
830 pci_read_config_dword(mms
[i
], I5100_DMIR
+ j
* 4, &dw
);
832 priv
->dmir
[i
][j
].limit
=
833 (u64
) i5100_dmir_limit(dw
) << 28;
834 for (k
= 0; k
< I5100_MAX_RANKS_PER_DIMM
; k
++)
835 priv
->dmir
[i
][j
].rank
[k
] =
836 i5100_dmir_rank(dw
, k
);
843 static void __devinit
i5100_init_csrows(struct mem_ctl_info
*mci
)
846 unsigned long total_pages
= 0UL;
847 struct i5100_priv
*priv
= mci
->pvt_info
;
849 for (i
= 0; i
< mci
->nr_csrows
; i
++) {
850 const unsigned long npages
= i5100_npages(mci
, i
);
851 const unsigned chan
= i5100_csrow_to_chan(mci
, i
);
852 const unsigned rank
= i5100_csrow_to_rank(mci
, i
);
858 * FIXME: these two are totally bogus -- I don't see how to
859 * map them correctly to this structure...
861 mci
->csrows
[i
].first_page
= total_pages
;
862 mci
->csrows
[i
].last_page
= total_pages
+ npages
- 1;
863 mci
->csrows
[i
].page_mask
= 0UL;
865 mci
->csrows
[i
].nr_pages
= npages
;
866 mci
->csrows
[i
].grain
= 32;
867 mci
->csrows
[i
].csrow_idx
= i
;
868 mci
->csrows
[i
].dtype
=
869 (priv
->mtr
[chan
][rank
].width
== 4) ? DEV_X4
: DEV_X8
;
870 mci
->csrows
[i
].ue_count
= 0;
871 mci
->csrows
[i
].ce_count
= 0;
872 mci
->csrows
[i
].mtype
= MEM_RDDR2
;
873 mci
->csrows
[i
].edac_mode
= EDAC_SECDED
;
874 mci
->csrows
[i
].mci
= mci
;
875 mci
->csrows
[i
].nr_channels
= 1;
876 mci
->csrows
[i
].channels
[0].chan_idx
= 0;
877 mci
->csrows
[i
].channels
[0].ce_count
= 0;
878 mci
->csrows
[i
].channels
[0].csrow
= mci
->csrows
+ i
;
879 snprintf(mci
->csrows
[i
].channels
[0].label
,
880 sizeof(mci
->csrows
[i
].channels
[0].label
),
881 "DIMM%u", i5100_rank_to_slot(mci
, chan
, rank
));
883 total_pages
+= npages
;
887 static int __devinit
i5100_init_one(struct pci_dev
*pdev
,
888 const struct pci_device_id
*id
)
891 struct mem_ctl_info
*mci
;
892 struct i5100_priv
*priv
;
893 struct pci_dev
*ch0mm
, *ch1mm
;
898 if (PCI_FUNC(pdev
->devfn
) != 1)
901 rc
= pci_enable_device(pdev
);
908 pci_read_config_dword(pdev
, I5100_MC
, &dw
);
909 if (!i5100_mc_errdeten(dw
)) {
910 printk(KERN_INFO
"i5100_edac: ECC not enabled.\n");
915 /* figure out how many ranks, from strapped state of 48GB_Mode input */
916 pci_read_config_dword(pdev
, I5100_MS
, &dw
);
917 ranksperch
= !!(dw
& (1 << 8)) * 2 + 4;
919 /* enable error reporting... */
920 pci_read_config_dword(pdev
, I5100_EMASK_MEM
, &dw
);
921 dw
&= ~I5100_FERR_NF_MEM_ANY_MASK
;
922 pci_write_config_dword(pdev
, I5100_EMASK_MEM
, dw
);
924 /* device 21, func 0, Channel 0 Memory Map, Error Flag/Mask, etc... */
925 ch0mm
= pci_get_device_func(PCI_VENDOR_ID_INTEL
,
926 PCI_DEVICE_ID_INTEL_5100_21
, 0);
932 rc
= pci_enable_device(ch0mm
);
938 /* device 22, func 0, Channel 1 Memory Map, Error Flag/Mask, etc... */
939 ch1mm
= pci_get_device_func(PCI_VENDOR_ID_INTEL
,
940 PCI_DEVICE_ID_INTEL_5100_22
, 0);
943 goto bail_disable_ch0
;
946 rc
= pci_enable_device(ch1mm
);
952 mci
= edac_mc_alloc(sizeof(*priv
), ranksperch
* 2, 1, 0);
955 goto bail_disable_ch1
;
958 mci
->dev
= &pdev
->dev
;
960 priv
= mci
->pvt_info
;
961 priv
->ranksperchan
= ranksperch
;
966 INIT_DELAYED_WORK(&(priv
->i5100_scrubbing
), i5100_refresh_scrubbing
);
968 /* If scrubbing was already enabled by the bios, start maintaining it */
969 pci_read_config_dword(pdev
, I5100_MC
, &dw
);
970 if (i5100_mc_scrben(dw
)) {
971 priv
->scrub_enable
= 1;
972 schedule_delayed_work(&(priv
->i5100_scrubbing
),
973 I5100_SCRUB_REFRESH_RATE
);
976 i5100_init_dimm_layout(pdev
, mci
);
977 i5100_init_interleaving(pdev
, mci
);
979 mci
->mtype_cap
= MEM_FLAG_FB_DDR2
;
980 mci
->edac_ctl_cap
= EDAC_FLAG_SECDED
;
981 mci
->edac_cap
= EDAC_FLAG_SECDED
;
982 mci
->mod_name
= "i5100_edac.c";
983 mci
->mod_ver
= "not versioned";
984 mci
->ctl_name
= "i5100";
985 mci
->dev_name
= pci_name(pdev
);
986 mci
->ctl_page_to_phys
= NULL
;
988 mci
->edac_check
= i5100_check_error
;
989 mci
->set_sdram_scrub_rate
= i5100_set_scrub_rate
;
990 mci
->get_sdram_scrub_rate
= i5100_get_scrub_rate
;
992 i5100_init_csrows(mci
);
994 /* this strange construction seems to be in every driver, dunno why */
995 switch (edac_op_state
) {
996 case EDAC_OPSTATE_POLL
:
997 case EDAC_OPSTATE_NMI
:
1000 edac_op_state
= EDAC_OPSTATE_POLL
;
1004 if (edac_mc_add_mc(mci
)) {
1012 priv
->scrub_enable
= 0;
1013 cancel_delayed_work_sync(&(priv
->i5100_scrubbing
));
1017 pci_disable_device(ch1mm
);
1023 pci_disable_device(ch0mm
);
1029 pci_disable_device(pdev
);
1035 static void __devexit
i5100_remove_one(struct pci_dev
*pdev
)
1037 struct mem_ctl_info
*mci
;
1038 struct i5100_priv
*priv
;
1040 mci
= edac_mc_del_mc(&pdev
->dev
);
1045 priv
= mci
->pvt_info
;
1047 priv
->scrub_enable
= 0;
1048 cancel_delayed_work_sync(&(priv
->i5100_scrubbing
));
1050 pci_disable_device(pdev
);
1051 pci_disable_device(priv
->ch0mm
);
1052 pci_disable_device(priv
->ch1mm
);
1053 pci_dev_put(priv
->ch0mm
);
1054 pci_dev_put(priv
->ch1mm
);
1059 static const struct pci_device_id i5100_pci_tbl
[] __devinitdata
= {
1060 /* Device 16, Function 0, Channel 0 Memory Map, Error Flag/Mask, ... */
1061 { PCI_DEVICE(PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_INTEL_5100_16
) },
1064 MODULE_DEVICE_TABLE(pci
, i5100_pci_tbl
);
1066 static struct pci_driver i5100_driver
= {
1067 .name
= KBUILD_BASENAME
,
1068 .probe
= i5100_init_one
,
1069 .remove
= __devexit_p(i5100_remove_one
),
1070 .id_table
= i5100_pci_tbl
,
1073 static int __init
i5100_init(void)
1077 pci_rc
= pci_register_driver(&i5100_driver
);
1079 return (pci_rc
< 0) ? pci_rc
: 0;
1082 static void __exit
i5100_exit(void)
1084 pci_unregister_driver(&i5100_driver
);
1087 module_init(i5100_init
);
1088 module_exit(i5100_exit
);
1090 MODULE_LICENSE("GPL");
1092 ("Arthur Jones <ajones@riverbed.com>");
1093 MODULE_DESCRIPTION("MC Driver for Intel I5100 memory controllers");