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
13 #include <linux/module.h>
14 #include <linux/init.h>
15 #include <linux/pci.h>
16 #include <linux/pci_ids.h>
17 #include <linux/slab.h>
18 #include <linux/edac.h>
19 #include <linux/delay.h>
20 #include <linux/mmzone.h>
22 #include "edac_core.h"
24 /* register addresses */
26 /* device 16, func 1 */
27 #define I5100_MC 0x40 /* Memory Control Register */
28 #define I5100_MS 0x44 /* Memory Status Register */
29 #define I5100_SPDDATA 0x48 /* Serial Presence Detect Status Reg */
30 #define I5100_SPDCMD 0x4c /* Serial Presence Detect Command Reg */
31 #define I5100_TOLM 0x6c /* Top of Low Memory */
32 #define I5100_MIR0 0x80 /* Memory Interleave Range 0 */
33 #define I5100_MIR1 0x84 /* Memory Interleave Range 1 */
34 #define I5100_AMIR_0 0x8c /* Adjusted Memory Interleave Range 0 */
35 #define I5100_AMIR_1 0x90 /* Adjusted Memory Interleave Range 1 */
36 #define I5100_FERR_NF_MEM 0xa0 /* MC First Non Fatal Errors */
37 #define I5100_FERR_NF_MEM_M16ERR_MASK (1 << 16)
38 #define I5100_FERR_NF_MEM_M15ERR_MASK (1 << 15)
39 #define I5100_FERR_NF_MEM_M14ERR_MASK (1 << 14)
40 #define I5100_FERR_NF_MEM_M12ERR_MASK (1 << 12)
41 #define I5100_FERR_NF_MEM_M11ERR_MASK (1 << 11)
42 #define I5100_FERR_NF_MEM_M10ERR_MASK (1 << 10)
43 #define I5100_FERR_NF_MEM_M6ERR_MASK (1 << 6)
44 #define I5100_FERR_NF_MEM_M5ERR_MASK (1 << 5)
45 #define I5100_FERR_NF_MEM_M4ERR_MASK (1 << 4)
46 #define I5100_FERR_NF_MEM_M1ERR_MASK 1
47 #define I5100_FERR_NF_MEM_ANY_MASK \
48 (I5100_FERR_NF_MEM_M16ERR_MASK | \
49 I5100_FERR_NF_MEM_M15ERR_MASK | \
50 I5100_FERR_NF_MEM_M14ERR_MASK | \
51 I5100_FERR_NF_MEM_M12ERR_MASK | \
52 I5100_FERR_NF_MEM_M11ERR_MASK | \
53 I5100_FERR_NF_MEM_M10ERR_MASK | \
54 I5100_FERR_NF_MEM_M6ERR_MASK | \
55 I5100_FERR_NF_MEM_M5ERR_MASK | \
56 I5100_FERR_NF_MEM_M4ERR_MASK | \
57 I5100_FERR_NF_MEM_M1ERR_MASK)
58 #define I5100_NERR_NF_MEM 0xa4 /* MC Next Non-Fatal Errors */
59 #define I5100_EMASK_MEM 0xa8 /* MC Error Mask Register */
61 /* device 21 and 22, func 0 */
62 #define I5100_MTR_0 0x154 /* Memory Technology Registers 0-3 */
63 #define I5100_DMIR 0x15c /* DIMM Interleave Range */
64 #define I5100_VALIDLOG 0x18c /* Valid Log Markers */
65 #define I5100_NRECMEMA 0x190 /* Non-Recoverable Memory Error Log Reg A */
66 #define I5100_NRECMEMB 0x194 /* Non-Recoverable Memory Error Log Reg B */
67 #define I5100_REDMEMA 0x198 /* Recoverable Memory Data Error Log Reg A */
68 #define I5100_REDMEMB 0x19c /* Recoverable Memory Data Error Log Reg B */
69 #define I5100_RECMEMA 0x1a0 /* Recoverable Memory Error Log Reg A */
70 #define I5100_RECMEMB 0x1a4 /* Recoverable Memory Error Log Reg B */
71 #define I5100_MTR_4 0x1b0 /* Memory Technology Registers 4,5 */
73 /* bit field accessors */
75 static inline u32 i5100_mc_errdeten(u32 mc)
80 static inline u16 i5100_spddata_rdo(u16 a)
85 static inline u16 i5100_spddata_sbe(u16 a)
90 static inline u16 i5100_spddata_busy(u16 a)
95 static inline u16 i5100_spddata_data(u16 a)
97 return a & ((1 << 8) - 1);
100 static inline u32 i5100_spdcmd_create(u32 dti, u32 ckovrd, u32 sa, u32 ba,
103 return ((dti & ((1 << 4) - 1)) << 28) |
104 ((ckovrd & 1) << 27) |
105 ((sa & ((1 << 3) - 1)) << 24) |
106 ((ba & ((1 << 8) - 1)) << 16) |
107 ((data & ((1 << 8) - 1)) << 8) |
111 static inline u16 i5100_tolm_tolm(u16 a)
113 return a >> 12 & ((1 << 4) - 1);
116 static inline u16 i5100_mir_limit(u16 a)
118 return a >> 4 & ((1 << 12) - 1);
121 static inline u16 i5100_mir_way1(u16 a)
126 static inline u16 i5100_mir_way0(u16 a)
131 static inline u32 i5100_ferr_nf_mem_chan_indx(u32 a)
136 static inline u32 i5100_ferr_nf_mem_any(u32 a)
138 return a & I5100_FERR_NF_MEM_ANY_MASK;
141 static inline u32 i5100_nerr_nf_mem_any(u32 a)
143 return i5100_ferr_nf_mem_any(a);
146 static inline u32 i5100_dmir_limit(u32 a)
148 return a >> 16 & ((1 << 11) - 1);
151 static inline u32 i5100_dmir_rank(u32 a, u32 i)
153 return a >> (4 * i) & ((1 << 2) - 1);
156 static inline u16 i5100_mtr_present(u16 a)
161 static inline u16 i5100_mtr_ethrottle(u16 a)
166 static inline u16 i5100_mtr_width(u16 a)
171 static inline u16 i5100_mtr_numbank(u16 a)
176 static inline u16 i5100_mtr_numrow(u16 a)
178 return a >> 2 & ((1 << 2) - 1);
181 static inline u16 i5100_mtr_numcol(u16 a)
183 return a & ((1 << 2) - 1);
187 static inline u32 i5100_validlog_redmemvalid(u32 a)
192 static inline u32 i5100_validlog_recmemvalid(u32 a)
197 static inline u32 i5100_validlog_nrecmemvalid(u32 a)
202 static inline u32 i5100_nrecmema_merr(u32 a)
204 return a >> 15 & ((1 << 5) - 1);
207 static inline u32 i5100_nrecmema_bank(u32 a)
209 return a >> 12 & ((1 << 3) - 1);
212 static inline u32 i5100_nrecmema_rank(u32 a)
214 return a >> 8 & ((1 << 3) - 1);
217 static inline u32 i5100_nrecmema_dm_buf_id(u32 a)
219 return a & ((1 << 8) - 1);
222 static inline u32 i5100_nrecmemb_cas(u32 a)
224 return a >> 16 & ((1 << 13) - 1);
227 static inline u32 i5100_nrecmemb_ras(u32 a)
229 return a & ((1 << 16) - 1);
232 static inline u32 i5100_redmemb_ecc_locator(u32 a)
234 return a & ((1 << 18) - 1);
237 static inline u32 i5100_recmema_merr(u32 a)
239 return i5100_nrecmema_merr(a);
242 static inline u32 i5100_recmema_bank(u32 a)
244 return i5100_nrecmema_bank(a);
247 static inline u32 i5100_recmema_rank(u32 a)
249 return i5100_nrecmema_rank(a);
252 static inline u32 i5100_recmema_dm_buf_id(u32 a)
254 return i5100_nrecmema_dm_buf_id(a);
257 static inline u32 i5100_recmemb_cas(u32 a)
259 return i5100_nrecmemb_cas(a);
262 static inline u32 i5100_recmemb_ras(u32 a)
264 return i5100_nrecmemb_ras(a);
267 /* some generic limits */
268 #define I5100_MAX_RANKS_PER_CTLR 6
269 #define I5100_MAX_CTLRS 2
270 #define I5100_MAX_RANKS_PER_DIMM 4
271 #define I5100_DIMM_ADDR_LINES (6 - 3) /* 64 bits / 8 bits per byte */
272 #define I5100_MAX_DIMM_SLOTS_PER_CTLR 4
273 #define I5100_MAX_RANK_INTERLEAVE 4
274 #define I5100_MAX_DMIRS 5
277 /* ranks on each dimm -- 0 maps to not present -- obtained via SPD */
278 int dimm_numrank[I5100_MAX_CTLRS][I5100_MAX_DIMM_SLOTS_PER_CTLR];
281 * mainboard chip select map -- maps i5100 chip selects to
282 * DIMM slot chip selects. In the case of only 4 ranks per
283 * controller, the mapping is fairly obvious but not unique.
284 * we map -1 -> NC and assume both controllers use the same
288 int dimm_csmap[I5100_MAX_DIMM_SLOTS_PER_CTLR][I5100_MAX_RANKS_PER_DIMM];
290 /* memory interleave range */
294 } mir[I5100_MAX_CTLRS];
296 /* adjusted memory interleave range register */
297 unsigned amir[I5100_MAX_CTLRS];
299 /* dimm interleave range */
301 unsigned rank[I5100_MAX_RANK_INTERLEAVE];
303 } dmir[I5100_MAX_CTLRS][I5100_MAX_DMIRS];
305 /* memory technology registers... */
307 unsigned present; /* 0 or 1 */
308 unsigned ethrottle; /* 0 or 1 */
309 unsigned width; /* 4 or 8 bits */
310 unsigned numbank; /* 2 or 3 lines */
311 unsigned numrow; /* 13 .. 16 lines */
312 unsigned numcol; /* 11 .. 12 lines */
313 } mtr[I5100_MAX_CTLRS][I5100_MAX_RANKS_PER_CTLR];
315 u64 tolm; /* top of low memory in bytes */
316 unsigned ranksperctlr; /* number of ranks per controller */
318 struct pci_dev *mc; /* device 16 func 1 */
319 struct pci_dev *ch0mm; /* device 21 func 0 */
320 struct pci_dev *ch1mm; /* device 22 func 0 */
323 /* map a rank/ctlr to a slot number on the mainboard */
324 static int i5100_rank_to_slot(const struct mem_ctl_info *mci,
327 const struct i5100_priv *priv = mci->pvt_info;
330 for (i = 0; i < I5100_MAX_DIMM_SLOTS_PER_CTLR; i++) {
332 const int numrank = priv->dimm_numrank[ctlr][i];
334 for (j = 0; j < numrank; j++)
335 if (priv->dimm_csmap[i][j] == rank)
342 static const char *i5100_err_msg(unsigned err)
344 static const char *merrs[] = {
346 "uncorrectable data ECC on replay", /* 1 */
349 "aliased uncorrectable demand data ECC", /* 4 */
350 "aliased uncorrectable spare-copy data ECC", /* 5 */
351 "aliased uncorrectable patrol data ECC", /* 6 */
355 "non-aliased uncorrectable demand data ECC", /* 10 */
356 "non-aliased uncorrectable spare-copy data ECC", /* 11 */
357 "non-aliased uncorrectable patrol data ECC", /* 12 */
359 "correctable demand data ECC", /* 14 */
360 "correctable spare-copy data ECC", /* 15 */
361 "correctable patrol data ECC", /* 16 */
363 "SPD protocol error", /* 18 */
365 "spare copy initiated", /* 20 */
366 "spare copy completed", /* 21 */
370 for (i = 0; i < ARRAY_SIZE(merrs); i++)
377 /* convert csrow index into a rank (per controller -- 0..5) */
378 static int i5100_csrow_to_rank(const struct mem_ctl_info *mci, int csrow)
380 const struct i5100_priv *priv = mci->pvt_info;
382 return csrow % priv->ranksperctlr;
385 /* convert csrow index into a controller (0..1) */
386 static int i5100_csrow_to_cntlr(const struct mem_ctl_info *mci, int csrow)
388 const struct i5100_priv *priv = mci->pvt_info;
390 return csrow / priv->ranksperctlr;
393 static unsigned i5100_rank_to_csrow(const struct mem_ctl_info *mci,
396 const struct i5100_priv *priv = mci->pvt_info;
398 return ctlr * priv->ranksperctlr + rank;
401 static void i5100_handle_ce(struct mem_ctl_info *mci,
405 unsigned long syndrome,
410 const int csrow = i5100_rank_to_csrow(mci, ctlr, rank);
413 "CE ctlr %d, bank %u, rank %u, syndrome 0x%lx, "
414 "cas %u, ras %u, csrow %u, label \"%s\": %s\n",
415 ctlr, bank, rank, syndrome, cas, ras,
416 csrow, mci->csrows[csrow].channels[0].label, msg);
419 mci->csrows[csrow].ce_count++;
420 mci->csrows[csrow].channels[0].ce_count++;
423 static void i5100_handle_ue(struct mem_ctl_info *mci,
427 unsigned long syndrome,
432 const int csrow = i5100_rank_to_csrow(mci, ctlr, rank);
435 "UE ctlr %d, bank %u, rank %u, syndrome 0x%lx, "
436 "cas %u, ras %u, csrow %u, label \"%s\": %s\n",
437 ctlr, bank, rank, syndrome, cas, ras,
438 csrow, mci->csrows[csrow].channels[0].label, msg);
441 mci->csrows[csrow].ue_count++;
444 static void i5100_read_log(struct mem_ctl_info *mci, int ctlr,
447 struct i5100_priv *priv = mci->pvt_info;
448 struct pci_dev *pdev = (ctlr) ? priv->ch1mm : priv->ch0mm;
451 unsigned syndrome = 0;
452 unsigned ecc_loc = 0;
459 pci_read_config_dword(pdev, I5100_VALIDLOG, &dw);
461 if (i5100_validlog_redmemvalid(dw)) {
462 pci_read_config_dword(pdev, I5100_REDMEMA, &dw2);
464 pci_read_config_dword(pdev, I5100_REDMEMB, &dw2);
465 ecc_loc = i5100_redmemb_ecc_locator(dw2);
468 if (i5100_validlog_recmemvalid(dw)) {
471 pci_read_config_dword(pdev, I5100_RECMEMA, &dw2);
472 merr = i5100_recmema_merr(dw2);
473 bank = i5100_recmema_bank(dw2);
474 rank = i5100_recmema_rank(dw2);
476 pci_read_config_dword(pdev, I5100_RECMEMB, &dw2);
477 cas = i5100_recmemb_cas(dw2);
478 ras = i5100_recmemb_ras(dw2);
480 /* FIXME: not really sure if this is what merr is...
483 msg = i5100_err_msg(ferr);
485 msg = i5100_err_msg(nerr);
487 i5100_handle_ce(mci, ctlr, bank, rank, syndrome, cas, ras, msg);
490 if (i5100_validlog_nrecmemvalid(dw)) {
493 pci_read_config_dword(pdev, I5100_NRECMEMA, &dw2);
494 merr = i5100_nrecmema_merr(dw2);
495 bank = i5100_nrecmema_bank(dw2);
496 rank = i5100_nrecmema_rank(dw2);
498 pci_read_config_dword(pdev, I5100_NRECMEMB, &dw2);
499 cas = i5100_nrecmemb_cas(dw2);
500 ras = i5100_nrecmemb_ras(dw2);
502 /* FIXME: not really sure if this is what merr is...
505 msg = i5100_err_msg(ferr);
507 msg = i5100_err_msg(nerr);
509 i5100_handle_ue(mci, ctlr, bank, rank, syndrome, cas, ras, msg);
512 pci_write_config_dword(pdev, I5100_VALIDLOG, dw);
515 static void i5100_check_error(struct mem_ctl_info *mci)
517 struct i5100_priv *priv = mci->pvt_info;
521 pci_read_config_dword(priv->mc, I5100_FERR_NF_MEM, &dw);
522 if (i5100_ferr_nf_mem_any(dw)) {
525 pci_read_config_dword(priv->mc, I5100_NERR_NF_MEM, &dw2);
527 pci_write_config_dword(priv->mc, I5100_NERR_NF_MEM,
529 pci_write_config_dword(priv->mc, I5100_FERR_NF_MEM, dw);
531 i5100_read_log(mci, i5100_ferr_nf_mem_chan_indx(dw),
532 i5100_ferr_nf_mem_any(dw),
533 i5100_nerr_nf_mem_any(dw2));
537 static struct pci_dev *pci_get_device_func(unsigned vendor,
541 struct pci_dev *ret = NULL;
544 ret = pci_get_device(vendor, device, ret);
549 if (PCI_FUNC(ret->devfn) == func)
556 static unsigned long __devinit i5100_npages(struct mem_ctl_info *mci,
559 struct i5100_priv *priv = mci->pvt_info;
560 const unsigned ctlr_rank = i5100_csrow_to_rank(mci, csrow);
561 const unsigned ctlr = i5100_csrow_to_cntlr(mci, csrow);
565 if (!priv->mtr[ctlr][ctlr_rank].present)
569 I5100_DIMM_ADDR_LINES +
570 priv->mtr[ctlr][ctlr_rank].numcol +
571 priv->mtr[ctlr][ctlr_rank].numrow +
572 priv->mtr[ctlr][ctlr_rank].numbank;
574 return (unsigned long)
575 ((unsigned long long) (1ULL << addr_lines) / PAGE_SIZE);
578 static void __devinit i5100_init_mtr(struct mem_ctl_info *mci)
580 struct i5100_priv *priv = mci->pvt_info;
581 struct pci_dev *mms[2] = { priv->ch0mm, priv->ch1mm };
584 for (i = 0; i < I5100_MAX_CTLRS; i++) {
586 struct pci_dev *pdev = mms[i];
588 for (j = 0; j < I5100_MAX_RANKS_PER_CTLR; j++) {
589 const unsigned addr =
590 (j < 4) ? I5100_MTR_0 + j * 2 :
591 I5100_MTR_4 + (j - 4) * 2;
594 pci_read_config_word(pdev, addr, &w);
596 priv->mtr[i][j].present = i5100_mtr_present(w);
597 priv->mtr[i][j].ethrottle = i5100_mtr_ethrottle(w);
598 priv->mtr[i][j].width = 4 + 4 * i5100_mtr_width(w);
599 priv->mtr[i][j].numbank = 2 + i5100_mtr_numbank(w);
600 priv->mtr[i][j].numrow = 13 + i5100_mtr_numrow(w);
601 priv->mtr[i][j].numcol = 10 + i5100_mtr_numcol(w);
607 * FIXME: make this into a real i2c adapter (so that dimm-decode
610 static int i5100_read_spd_byte(const struct mem_ctl_info *mci,
611 u8 ch, u8 slot, u8 addr, u8 *byte)
613 struct i5100_priv *priv = mci->pvt_info;
617 pci_read_config_word(priv->mc, I5100_SPDDATA, &w);
618 if (i5100_spddata_busy(w))
621 pci_write_config_dword(priv->mc, I5100_SPDCMD,
622 i5100_spdcmd_create(0xa, 1, ch * 4 + slot, addr,
625 /* wait up to 100ms */
626 et = jiffies + HZ / 10;
629 pci_read_config_word(priv->mc, I5100_SPDDATA, &w);
630 if (!i5100_spddata_busy(w))
635 if (!i5100_spddata_rdo(w) || i5100_spddata_sbe(w))
638 *byte = i5100_spddata_data(w);
644 * fill dimm chip select map
647 * o only valid for 4 ranks per controller
648 * o not the only way to may chip selects to dimm slots
649 * o investigate if there is some way to obtain this map from the bios
651 static void __devinit i5100_init_dimm_csmap(struct mem_ctl_info *mci)
653 struct i5100_priv *priv = mci->pvt_info;
656 WARN_ON(priv->ranksperctlr != 4);
658 for (i = 0; i < I5100_MAX_DIMM_SLOTS_PER_CTLR; i++) {
661 for (j = 0; j < I5100_MAX_RANKS_PER_DIMM; j++)
662 priv->dimm_csmap[i][j] = -1; /* default NC */
665 /* only 2 chip selects per slot... */
666 priv->dimm_csmap[0][0] = 0;
667 priv->dimm_csmap[0][1] = 3;
668 priv->dimm_csmap[1][0] = 1;
669 priv->dimm_csmap[1][1] = 2;
670 priv->dimm_csmap[2][0] = 2;
671 priv->dimm_csmap[3][0] = 3;
674 static void __devinit i5100_init_dimm_layout(struct pci_dev *pdev,
675 struct mem_ctl_info *mci)
677 struct i5100_priv *priv = mci->pvt_info;
680 for (i = 0; i < I5100_MAX_CTLRS; i++) {
683 for (j = 0; j < I5100_MAX_DIMM_SLOTS_PER_CTLR; j++) {
686 if (i5100_read_spd_byte(mci, i, j, 5, &rank) < 0)
687 priv->dimm_numrank[i][j] = 0;
689 priv->dimm_numrank[i][j] = (rank & 3) + 1;
693 i5100_init_dimm_csmap(mci);
696 static void __devinit i5100_init_interleaving(struct pci_dev *pdev,
697 struct mem_ctl_info *mci)
701 struct i5100_priv *priv = mci->pvt_info;
702 struct pci_dev *mms[2] = { priv->ch0mm, priv->ch1mm };
705 pci_read_config_word(pdev, I5100_TOLM, &w);
706 priv->tolm = (u64) i5100_tolm_tolm(w) * 256 * 1024 * 1024;
708 pci_read_config_word(pdev, I5100_MIR0, &w);
709 priv->mir[0].limit = (u64) i5100_mir_limit(w) << 28;
710 priv->mir[0].way[1] = i5100_mir_way1(w);
711 priv->mir[0].way[0] = i5100_mir_way0(w);
713 pci_read_config_word(pdev, I5100_MIR1, &w);
714 priv->mir[1].limit = (u64) i5100_mir_limit(w) << 28;
715 priv->mir[1].way[1] = i5100_mir_way1(w);
716 priv->mir[1].way[0] = i5100_mir_way0(w);
718 pci_read_config_word(pdev, I5100_AMIR_0, &w);
720 pci_read_config_word(pdev, I5100_AMIR_1, &w);
723 for (i = 0; i < I5100_MAX_CTLRS; i++) {
726 for (j = 0; j < 5; j++) {
729 pci_read_config_dword(mms[i], I5100_DMIR + j * 4, &dw);
731 priv->dmir[i][j].limit =
732 (u64) i5100_dmir_limit(dw) << 28;
733 for (k = 0; k < I5100_MAX_RANKS_PER_DIMM; k++)
734 priv->dmir[i][j].rank[k] =
735 i5100_dmir_rank(dw, k);
742 static void __devinit i5100_init_csrows(struct mem_ctl_info *mci)
745 unsigned long total_pages = 0UL;
746 struct i5100_priv *priv = mci->pvt_info;
748 for (i = 0; i < mci->nr_csrows; i++) {
749 const unsigned long npages = i5100_npages(mci, i);
750 const unsigned cntlr = i5100_csrow_to_cntlr(mci, i);
751 const unsigned rank = i5100_csrow_to_rank(mci, i);
757 * FIXME: these two are totally bogus -- I don't see how to
758 * map them correctly to this structure...
760 mci->csrows[i].first_page = total_pages;
761 mci->csrows[i].last_page = total_pages + npages - 1;
762 mci->csrows[i].page_mask = 0UL;
764 mci->csrows[i].nr_pages = npages;
765 mci->csrows[i].grain = 32;
766 mci->csrows[i].csrow_idx = i;
767 mci->csrows[i].dtype =
768 (priv->mtr[cntlr][rank].width == 4) ? DEV_X4 : DEV_X8;
769 mci->csrows[i].ue_count = 0;
770 mci->csrows[i].ce_count = 0;
771 mci->csrows[i].mtype = MEM_RDDR2;
772 mci->csrows[i].edac_mode = EDAC_SECDED;
773 mci->csrows[i].mci = mci;
774 mci->csrows[i].nr_channels = 1;
775 mci->csrows[i].channels[0].chan_idx = 0;
776 mci->csrows[i].channels[0].ce_count = 0;
777 mci->csrows[i].channels[0].csrow = mci->csrows + i;
778 snprintf(mci->csrows[i].channels[0].label,
779 sizeof(mci->csrows[i].channels[0].label),
780 "DIMM%u", i5100_rank_to_slot(mci, cntlr, rank));
782 total_pages += npages;
786 static int __devinit i5100_init_one(struct pci_dev *pdev,
787 const struct pci_device_id *id)
790 struct mem_ctl_info *mci;
791 struct i5100_priv *priv;
792 struct pci_dev *ch0mm, *ch1mm;
797 if (PCI_FUNC(pdev->devfn) != 1)
800 rc = pci_enable_device(pdev);
807 pci_read_config_dword(pdev, I5100_MC, &dw);
808 if (!i5100_mc_errdeten(dw)) {
809 printk(KERN_INFO "i5100_edac: ECC not enabled.\n");
814 /* figure out how many ranks, from strapped state of 48GB_Mode input */
815 pci_read_config_dword(pdev, I5100_MS, &dw);
816 ranksperch = !!(dw & (1 << 8)) * 2 + 4;
818 if (ranksperch != 4) {
819 /* FIXME: get 6 ranks / controller to work - need hw... */
820 printk(KERN_INFO "i5100_edac: unsupported configuration.\n");
825 /* enable error reporting... */
826 pci_read_config_dword(pdev, I5100_EMASK_MEM, &dw);
827 dw &= ~I5100_FERR_NF_MEM_ANY_MASK;
828 pci_write_config_dword(pdev, I5100_EMASK_MEM, dw);
830 /* device 21, func 0, Channel 0 Memory Map, Error Flag/Mask, etc... */
831 ch0mm = pci_get_device_func(PCI_VENDOR_ID_INTEL,
832 PCI_DEVICE_ID_INTEL_5100_21, 0);
838 rc = pci_enable_device(ch0mm);
844 /* device 22, func 0, Channel 1 Memory Map, Error Flag/Mask, etc... */
845 ch1mm = pci_get_device_func(PCI_VENDOR_ID_INTEL,
846 PCI_DEVICE_ID_INTEL_5100_22, 0);
849 goto bail_disable_ch0;
852 rc = pci_enable_device(ch1mm);
858 mci = edac_mc_alloc(sizeof(*priv), ranksperch * 2, 1, 0);
861 goto bail_disable_ch1;
864 mci->dev = &pdev->dev;
866 priv = mci->pvt_info;
867 priv->ranksperctlr = ranksperch;
872 i5100_init_dimm_layout(pdev, mci);
873 i5100_init_interleaving(pdev, mci);
875 mci->mtype_cap = MEM_FLAG_FB_DDR2;
876 mci->edac_ctl_cap = EDAC_FLAG_SECDED;
877 mci->edac_cap = EDAC_FLAG_SECDED;
878 mci->mod_name = "i5100_edac.c";
879 mci->mod_ver = "not versioned";
880 mci->ctl_name = "i5100";
881 mci->dev_name = pci_name(pdev);
882 mci->ctl_page_to_phys = NULL;
884 mci->edac_check = i5100_check_error;
886 i5100_init_csrows(mci);
888 /* this strange construction seems to be in every driver, dunno why */
889 switch (edac_op_state) {
890 case EDAC_OPSTATE_POLL:
891 case EDAC_OPSTATE_NMI:
894 edac_op_state = EDAC_OPSTATE_POLL;
898 if (edac_mc_add_mc(mci)) {
909 pci_disable_device(ch1mm);
915 pci_disable_device(ch0mm);
921 pci_disable_device(pdev);
927 static void __devexit i5100_remove_one(struct pci_dev *pdev)
929 struct mem_ctl_info *mci;
930 struct i5100_priv *priv;
932 mci = edac_mc_del_mc(&pdev->dev);
937 priv = mci->pvt_info;
938 pci_disable_device(pdev);
939 pci_disable_device(priv->ch0mm);
940 pci_disable_device(priv->ch1mm);
941 pci_dev_put(priv->ch0mm);
942 pci_dev_put(priv->ch1mm);
947 static const struct pci_device_id i5100_pci_tbl[] __devinitdata = {
948 /* Device 16, Function 0, Channel 0 Memory Map, Error Flag/Mask, ... */
949 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_5100_16) },
952 MODULE_DEVICE_TABLE(pci, i5100_pci_tbl);
954 static struct pci_driver i5100_driver = {
955 .name = KBUILD_BASENAME,
956 .probe = i5100_init_one,
957 .remove = __devexit_p(i5100_remove_one),
958 .id_table = i5100_pci_tbl,
961 static int __init i5100_init(void)
965 pci_rc = pci_register_driver(&i5100_driver);
967 return (pci_rc < 0) ? pci_rc : 0;
970 static void __exit i5100_exit(void)
972 pci_unregister_driver(&i5100_driver);
975 module_init(i5100_init);
976 module_exit(i5100_exit);
978 MODULE_LICENSE("GPL");
980 ("Arthur Jones <ajones@riverbed.com>");
981 MODULE_DESCRIPTION("MC Driver for Intel I5100 memory controllers");