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Merge tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git] / drivers / edac / sb_edac.c
blob93daa4297f2e0596d9999613edf54c017491d86f
1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Intel Sandy Bridge -EN/-EP/-EX Memory Controller kernel module
3 *
4 * This driver supports the memory controllers found on the Intel
5 * processor family Sandy Bridge.
6 *
7 * Copyright (c) 2011 by:
8 * Mauro Carvalho Chehab
9 */
10
11 #include <linux/module.h>
12 #include <linux/init.h>
13 #include <linux/pci.h>
14 #include <linux/pci_ids.h>
15 #include <linux/slab.h>
16 #include <linux/delay.h>
17 #include <linux/edac.h>
18 #include <linux/mmzone.h>
19 #include <linux/smp.h>
20 #include <linux/bitmap.h>
21 #include <linux/math64.h>
22 #include <linux/mod_devicetable.h>
23 #include <asm/cpu_device_id.h>
24 #include <asm/intel-family.h>
25 #include <asm/processor.h>
26 #include <asm/mce.h>
27
28 #include "edac_module.h"
29
30 /* Static vars */
31 static LIST_HEAD(sbridge_edac_list);
32
33 /*
34 * Alter this version for the module when modifications are made
35 */
36 #define SBRIDGE_REVISION " Ver: 1.1.2 "
37 #define EDAC_MOD_STR "sb_edac"
38
39 /*
40 * Debug macros
41 */
42 #define sbridge_printk(level, fmt, arg...) \
43 edac_printk(level, "sbridge", fmt, ##arg)
44
45 #define sbridge_mc_printk(mci, level, fmt, arg...) \
46 edac_mc_chipset_printk(mci, level, "sbridge", fmt, ##arg)
47
48 /*
49 * Get a bit field at register value <v>, from bit <lo> to bit <hi>
50 */
51 #define GET_BITFIELD(v, lo, hi) \
52 (((v) & GENMASK_ULL(hi, lo)) >> (lo))
53
54 /* Devices 12 Function 6, Offsets 0x80 to 0xcc */
55 static const u32 sbridge_dram_rule[] = {
56 0x80, 0x88, 0x90, 0x98, 0xa0,
57 0xa8, 0xb0, 0xb8, 0xc0, 0xc8,
58 };
59
60 static const u32 ibridge_dram_rule[] = {
61 0x60, 0x68, 0x70, 0x78, 0x80,
62 0x88, 0x90, 0x98, 0xa0, 0xa8,
63 0xb0, 0xb8, 0xc0, 0xc8, 0xd0,
64 0xd8, 0xe0, 0xe8, 0xf0, 0xf8,
65 };
66
67 static const u32 knl_dram_rule[] = {
68 0x60, 0x68, 0x70, 0x78, 0x80, /* 0-4 */
69 0x88, 0x90, 0x98, 0xa0, 0xa8, /* 5-9 */
70 0xb0, 0xb8, 0xc0, 0xc8, 0xd0, /* 10-14 */
71 0xd8, 0xe0, 0xe8, 0xf0, 0xf8, /* 15-19 */
72 0x100, 0x108, 0x110, 0x118, /* 20-23 */
73 };
74
75 #define DRAM_RULE_ENABLE(reg) GET_BITFIELD(reg, 0, 0)
76 #define A7MODE(reg) GET_BITFIELD(reg, 26, 26)
77
78 static char *show_dram_attr(u32 attr)
79 {
80 switch (attr) {
81 case 0:
82 return "DRAM";
83 case 1:
84 return "MMCFG";
85 case 2:
86 return "NXM";
87 default:
88 return "unknown";
89 }
90 }
91
92 static const u32 sbridge_interleave_list[] = {
93 0x84, 0x8c, 0x94, 0x9c, 0xa4,
94 0xac, 0xb4, 0xbc, 0xc4, 0xcc,
95 };
96
97 static const u32 ibridge_interleave_list[] = {
98 0x64, 0x6c, 0x74, 0x7c, 0x84,
99 0x8c, 0x94, 0x9c, 0xa4, 0xac,
100 0xb4, 0xbc, 0xc4, 0xcc, 0xd4,
101 0xdc, 0xe4, 0xec, 0xf4, 0xfc,
102 };
103
104 static const u32 knl_interleave_list[] = {
105 0x64, 0x6c, 0x74, 0x7c, 0x84, /* 0-4 */
106 0x8c, 0x94, 0x9c, 0xa4, 0xac, /* 5-9 */
107 0xb4, 0xbc, 0xc4, 0xcc, 0xd4, /* 10-14 */
108 0xdc, 0xe4, 0xec, 0xf4, 0xfc, /* 15-19 */
109 0x104, 0x10c, 0x114, 0x11c, /* 20-23 */
110 };
111 #define MAX_INTERLEAVE \
112 (max_t(unsigned int, ARRAY_SIZE(sbridge_interleave_list), \
113 max_t(unsigned int, ARRAY_SIZE(ibridge_interleave_list), \
114 ARRAY_SIZE(knl_interleave_list))))
115
116 struct interleave_pkg {
117 unsigned char start;
118 unsigned char end;
119 };
120
121 static const struct interleave_pkg sbridge_interleave_pkg[] = {
122 { 0, 2 },
123 { 3, 5 },
124 { 8, 10 },
125 { 11, 13 },
126 { 16, 18 },
127 { 19, 21 },
128 { 24, 26 },
129 { 27, 29 },
130 };
131
132 static const struct interleave_pkg ibridge_interleave_pkg[] = {
133 { 0, 3 },
134 { 4, 7 },
135 { 8, 11 },
136 { 12, 15 },
137 { 16, 19 },
138 { 20, 23 },
139 { 24, 27 },
140 { 28, 31 },
141 };
142
143 static inline int sad_pkg(const struct interleave_pkg *table, u32 reg,
144 int interleave)
145 {
146 return GET_BITFIELD(reg, table[interleave].start,
147 table[interleave].end);
148 }
149
150 /* Devices 12 Function 7 */
151
152 #define TOLM 0x80
153 #define TOHM 0x84
154 #define HASWELL_TOLM 0xd0
155 #define HASWELL_TOHM_0 0xd4
156 #define HASWELL_TOHM_1 0xd8
157 #define KNL_TOLM 0xd0
158 #define KNL_TOHM_0 0xd4
159 #define KNL_TOHM_1 0xd8
160
161 #define GET_TOLM(reg) ((GET_BITFIELD(reg, 0, 3) << 28) | 0x3ffffff)
162 #define GET_TOHM(reg) ((GET_BITFIELD(reg, 0, 20) << 25) | 0x3ffffff)
163
164 /* Device 13 Function 6 */
165
166 #define SAD_TARGET 0xf0
167
168 #define SOURCE_ID(reg) GET_BITFIELD(reg, 9, 11)
169
170 #define SOURCE_ID_KNL(reg) GET_BITFIELD(reg, 12, 14)
171
172 #define SAD_CONTROL 0xf4
173
174 /* Device 14 function 0 */
175
176 static const u32 tad_dram_rule[] = {
177 0x40, 0x44, 0x48, 0x4c,
178 0x50, 0x54, 0x58, 0x5c,
179 0x60, 0x64, 0x68, 0x6c,
180 };
181 #define MAX_TAD ARRAY_SIZE(tad_dram_rule)
182
183 #define TAD_LIMIT(reg) ((GET_BITFIELD(reg, 12, 31) << 26) | 0x3ffffff)
184 #define TAD_SOCK(reg) GET_BITFIELD(reg, 10, 11)
185 #define TAD_CH(reg) GET_BITFIELD(reg, 8, 9)
186 #define TAD_TGT3(reg) GET_BITFIELD(reg, 6, 7)
187 #define TAD_TGT2(reg) GET_BITFIELD(reg, 4, 5)
188 #define TAD_TGT1(reg) GET_BITFIELD(reg, 2, 3)
189 #define TAD_TGT0(reg) GET_BITFIELD(reg, 0, 1)
190
191 /* Device 15, function 0 */
192
193 #define MCMTR 0x7c
194 #define KNL_MCMTR 0x624
195
196 #define IS_ECC_ENABLED(mcmtr) GET_BITFIELD(mcmtr, 2, 2)
197 #define IS_LOCKSTEP_ENABLED(mcmtr) GET_BITFIELD(mcmtr, 1, 1)
198 #define IS_CLOSE_PG(mcmtr) GET_BITFIELD(mcmtr, 0, 0)
199
200 /* Device 15, function 1 */
201
202 #define RASENABLES 0xac
203 #define IS_MIRROR_ENABLED(reg) GET_BITFIELD(reg, 0, 0)
204
205 /* Device 15, functions 2-5 */
206
207 static const int mtr_regs[] = {
208 0x80, 0x84, 0x88,
209 };
210
211 static const int knl_mtr_reg = 0xb60;
212
213 #define RANK_DISABLE(mtr) GET_BITFIELD(mtr, 16, 19)
214 #define IS_DIMM_PRESENT(mtr) GET_BITFIELD(mtr, 14, 14)
215 #define RANK_CNT_BITS(mtr) GET_BITFIELD(mtr, 12, 13)
216 #define RANK_WIDTH_BITS(mtr) GET_BITFIELD(mtr, 2, 4)
217 #define COL_WIDTH_BITS(mtr) GET_BITFIELD(mtr, 0, 1)
218
219 static const u32 tad_ch_nilv_offset[] = {
220 0x90, 0x94, 0x98, 0x9c,
221 0xa0, 0xa4, 0xa8, 0xac,
222 0xb0, 0xb4, 0xb8, 0xbc,
223 };
224 #define CHN_IDX_OFFSET(reg) GET_BITFIELD(reg, 28, 29)
225 #define TAD_OFFSET(reg) (GET_BITFIELD(reg, 6, 25) << 26)
226
227 static const u32 rir_way_limit[] = {
228 0x108, 0x10c, 0x110, 0x114, 0x118,
229 };
230 #define MAX_RIR_RANGES ARRAY_SIZE(rir_way_limit)
231
232 #define IS_RIR_VALID(reg) GET_BITFIELD(reg, 31, 31)
233 #define RIR_WAY(reg) GET_BITFIELD(reg, 28, 29)
234
235 #define MAX_RIR_WAY 8
236
237 static const u32 rir_offset[MAX_RIR_RANGES][MAX_RIR_WAY] = {
238 { 0x120, 0x124, 0x128, 0x12c, 0x130, 0x134, 0x138, 0x13c },
239 { 0x140, 0x144, 0x148, 0x14c, 0x150, 0x154, 0x158, 0x15c },
240 { 0x160, 0x164, 0x168, 0x16c, 0x170, 0x174, 0x178, 0x17c },
241 { 0x180, 0x184, 0x188, 0x18c, 0x190, 0x194, 0x198, 0x19c },
242 { 0x1a0, 0x1a4, 0x1a8, 0x1ac, 0x1b0, 0x1b4, 0x1b8, 0x1bc },
243 };
244
245 #define RIR_RNK_TGT(type, reg) (((type) == BROADWELL) ? \
246 GET_BITFIELD(reg, 20, 23) : GET_BITFIELD(reg, 16, 19))
247
248 #define RIR_OFFSET(type, reg) (((type) == HASWELL || (type) == BROADWELL) ? \
249 GET_BITFIELD(reg, 2, 15) : GET_BITFIELD(reg, 2, 14))
250
251 /* Device 16, functions 2-7 */
252
253 /*
254 * FIXME: Implement the error count reads directly
255 */
256
257 #define RANK_ODD_OV(reg) GET_BITFIELD(reg, 31, 31)
258 #define RANK_ODD_ERR_CNT(reg) GET_BITFIELD(reg, 16, 30)
259 #define RANK_EVEN_OV(reg) GET_BITFIELD(reg, 15, 15)
260 #define RANK_EVEN_ERR_CNT(reg) GET_BITFIELD(reg, 0, 14)
261
262 #if 0 /* Currently unused*/
263 static const u32 correrrcnt[] = {
264 0x104, 0x108, 0x10c, 0x110,
265 };
266
267 static const u32 correrrthrsld[] = {
268 0x11c, 0x120, 0x124, 0x128,
269 };
270 #endif
271
272 #define RANK_ODD_ERR_THRSLD(reg) GET_BITFIELD(reg, 16, 30)
273 #define RANK_EVEN_ERR_THRSLD(reg) GET_BITFIELD(reg, 0, 14)
274
275
276 /* Device 17, function 0 */
277
278 #define SB_RANK_CFG_A 0x0328
279
280 #define IB_RANK_CFG_A 0x0320
281
282 /*
283 * sbridge structs
284 */
285
286 #define NUM_CHANNELS 6 /* Max channels per MC */
287 #define MAX_DIMMS 3 /* Max DIMMS per channel */
288 #define KNL_MAX_CHAS 38 /* KNL max num. of Cache Home Agents */
289 #define KNL_MAX_CHANNELS 6 /* KNL max num. of PCI channels */
290 #define KNL_MAX_EDCS 8 /* Embedded DRAM controllers */
291 #define CHANNEL_UNSPECIFIED 0xf /* Intel IA32 SDM 15-14 */
292
293 enum type {
294 SANDY_BRIDGE,
295 IVY_BRIDGE,
296 HASWELL,
297 BROADWELL,
298 KNIGHTS_LANDING,
299 };
300
301 enum domain {
302 IMC0 = 0,
303 IMC1,
304 SOCK,
305 };
306
307 enum mirroring_mode {
308 NON_MIRRORING,
309 ADDR_RANGE_MIRRORING,
310 FULL_MIRRORING,
311 };
312
313 struct sbridge_pvt;
314 struct sbridge_info {
315 enum type type;
316 u32 mcmtr;
317 u32 rankcfgr;
318 u64 (*get_tolm)(struct sbridge_pvt *pvt);
319 u64 (*get_tohm)(struct sbridge_pvt *pvt);
320 u64 (*rir_limit)(u32 reg);
321 u64 (*sad_limit)(u32 reg);
322 u32 (*interleave_mode)(u32 reg);
323 u32 (*dram_attr)(u32 reg);
324 const u32 *dram_rule;
325 const u32 *interleave_list;
326 const struct interleave_pkg *interleave_pkg;
327 u8 max_sad;
328 u8 (*get_node_id)(struct sbridge_pvt *pvt);
329 u8 (*get_ha)(u8 bank);
330 enum mem_type (*get_memory_type)(struct sbridge_pvt *pvt);
331 enum dev_type (*get_width)(struct sbridge_pvt *pvt, u32 mtr);
332 struct pci_dev *pci_vtd;
333 };
334
335 struct sbridge_channel {
336 u32 ranks;
337 u32 dimms;
338 };
339
340 struct pci_id_descr {
341 int dev_id;
342 int optional;
343 enum domain dom;
344 };
345
346 struct pci_id_table {
347 const struct pci_id_descr *descr;
348 int n_devs_per_imc;
349 int n_devs_per_sock;
350 int n_imcs_per_sock;
351 enum type type;
352 };
353
354 struct sbridge_dev {
355 struct list_head list;
356 int seg;
357 u8 bus, mc;
358 u8 node_id, source_id;
359 struct pci_dev **pdev;
360 enum domain dom;
361 int n_devs;
362 int i_devs;
363 struct mem_ctl_info *mci;
364 };
365
366 struct knl_pvt {
367 struct pci_dev *pci_cha[KNL_MAX_CHAS];
368 struct pci_dev *pci_channel[KNL_MAX_CHANNELS];
369 struct pci_dev *pci_mc0;
370 struct pci_dev *pci_mc1;
371 struct pci_dev *pci_mc0_misc;
372 struct pci_dev *pci_mc1_misc;
373 struct pci_dev *pci_mc_info; /* tolm, tohm */
374 };
375
376 struct sbridge_pvt {
377 /* Devices per socket */
378 struct pci_dev *pci_ddrio;
379 struct pci_dev *pci_sad0, *pci_sad1;
380 struct pci_dev *pci_br0, *pci_br1;
381 /* Devices per memory controller */
382 struct pci_dev *pci_ha, *pci_ta, *pci_ras;
383 struct pci_dev *pci_tad[NUM_CHANNELS];
384
385 struct sbridge_dev *sbridge_dev;
386
387 struct sbridge_info info;
388 struct sbridge_channel channel[NUM_CHANNELS];
389
390 /* Memory type detection */
391 bool is_cur_addr_mirrored, is_lockstep, is_close_pg;
392 bool is_chan_hash;
393 enum mirroring_mode mirror_mode;
394
395 /* Memory description */
396 u64 tolm, tohm;
397 struct knl_pvt knl;
398 };
399
400 #define PCI_DESCR(device_id, opt, domain) \
401 .dev_id = (device_id), \
402 .optional = opt, \
403 .dom = domain
404
405 static const struct pci_id_descr pci_dev_descr_sbridge[] = {
406 /* Processor Home Agent */
407 { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_HA0, 0, IMC0) },
408
409 /* Memory controller */
410 { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TA, 0, IMC0) },
411 { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_RAS, 0, IMC0) },
412 { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD0, 0, IMC0) },
413 { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD1, 0, IMC0) },
414 { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD2, 0, IMC0) },
415 { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD3, 0, IMC0) },
416 { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_DDRIO, 1, SOCK) },
417
418 /* System Address Decoder */
419 { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_SAD0, 0, SOCK) },
420 { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_SAD1, 0, SOCK) },
421
422 /* Broadcast Registers */
423 { PCI_DESCR(PCI_DEVICE_ID_INTEL_SBRIDGE_BR, 0, SOCK) },
424 };
425
426 #define PCI_ID_TABLE_ENTRY(A, N, M, T) { \
427 .descr = A, \
428 .n_devs_per_imc = N, \
429 .n_devs_per_sock = ARRAY_SIZE(A), \
430 .n_imcs_per_sock = M, \
431 .type = T \
432 }
433
434 static const struct pci_id_table pci_dev_descr_sbridge_table[] = {
435 PCI_ID_TABLE_ENTRY(pci_dev_descr_sbridge, ARRAY_SIZE(pci_dev_descr_sbridge), 1, SANDY_BRIDGE),
436 {0,} /* 0 terminated list. */
437 };
438
439 /* This changes depending if 1HA or 2HA:
440 * 1HA:
441 * 0x0eb8 (17.0) is DDRIO0
442 * 2HA:
443 * 0x0ebc (17.4) is DDRIO0
444 */
445 #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_1HA_DDRIO0 0x0eb8
446 #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_2HA_DDRIO0 0x0ebc
447
448 /* pci ids */
449 #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0 0x0ea0
450 #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA 0x0ea8
451 #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_RAS 0x0e71
452 #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD0 0x0eaa
453 #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD1 0x0eab
454 #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD2 0x0eac
455 #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD3 0x0ead
456 #define PCI_DEVICE_ID_INTEL_IBRIDGE_SAD 0x0ec8
457 #define PCI_DEVICE_ID_INTEL_IBRIDGE_BR0 0x0ec9
458 #define PCI_DEVICE_ID_INTEL_IBRIDGE_BR1 0x0eca
459 #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1 0x0e60
460 #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TA 0x0e68
461 #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_RAS 0x0e79
462 #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD0 0x0e6a
463 #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD1 0x0e6b
464 #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD2 0x0e6c
465 #define PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD3 0x0e6d
466
467 static const struct pci_id_descr pci_dev_descr_ibridge[] = {
468 /* Processor Home Agent */
469 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0, 0, IMC0) },
470 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1, 1, IMC1) },
471
472 /* Memory controller */
473 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA, 0, IMC0) },
474 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_RAS, 0, IMC0) },
475 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD0, 0, IMC0) },
476 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD1, 0, IMC0) },
477 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD2, 0, IMC0) },
478 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD3, 0, IMC0) },
479
480 /* Optional, mode 2HA */
481 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TA, 1, IMC1) },
482 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_RAS, 1, IMC1) },
483 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD0, 1, IMC1) },
484 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD1, 1, IMC1) },
485 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD2, 1, IMC1) },
486 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD3, 1, IMC1) },
487
488 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_1HA_DDRIO0, 1, SOCK) },
489 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_2HA_DDRIO0, 1, SOCK) },
490
491 /* System Address Decoder */
492 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_SAD, 0, SOCK) },
493
494 /* Broadcast Registers */
495 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_BR0, 1, SOCK) },
496 { PCI_DESCR(PCI_DEVICE_ID_INTEL_IBRIDGE_BR1, 0, SOCK) },
497
498 };
499
500 static const struct pci_id_table pci_dev_descr_ibridge_table[] = {
501 PCI_ID_TABLE_ENTRY(pci_dev_descr_ibridge, 12, 2, IVY_BRIDGE),
502 {0,} /* 0 terminated list. */
503 };
504
505 /* Haswell support */
506 /* EN processor:
507 * - 1 IMC
508 * - 3 DDR3 channels, 2 DPC per channel
509 * EP processor:
510 * - 1 or 2 IMC
511 * - 4 DDR4 channels, 3 DPC per channel
512 * EP 4S processor:
513 * - 2 IMC
514 * - 4 DDR4 channels, 3 DPC per channel
515 * EX processor:
516 * - 2 IMC
517 * - each IMC interfaces with a SMI 2 channel
518 * - each SMI channel interfaces with a scalable memory buffer
519 * - each scalable memory buffer supports 4 DDR3/DDR4 channels, 3 DPC
520 */
521 #define HASWELL_DDRCRCLKCONTROLS 0xa10 /* Ditto on Broadwell */
522 #define HASWELL_HASYSDEFEATURE2 0x84
523 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_VTD_MISC 0x2f28
524 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0 0x2fa0
525 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1 0x2f60
526 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TA 0x2fa8
527 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TM 0x2f71
528 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TA 0x2f68
529 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TM 0x2f79
530 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_CBO_SAD0 0x2ffc
531 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_CBO_SAD1 0x2ffd
532 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD0 0x2faa
533 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD1 0x2fab
534 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD2 0x2fac
535 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD3 0x2fad
536 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD0 0x2f6a
537 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD1 0x2f6b
538 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD2 0x2f6c
539 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD3 0x2f6d
540 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO0 0x2fbd
541 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO1 0x2fbf
542 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO2 0x2fb9
543 #define PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO3 0x2fbb
544 static const struct pci_id_descr pci_dev_descr_haswell[] = {
545 /* first item must be the HA */
546 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0, 0, IMC0) },
547 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1, 1, IMC1) },
548
549 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TA, 0, IMC0) },
550 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TM, 0, IMC0) },
551 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD0, 0, IMC0) },
552 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD1, 0, IMC0) },
553 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD2, 1, IMC0) },
554 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD3, 1, IMC0) },
555
556 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TA, 1, IMC1) },
557 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TM, 1, IMC1) },
558 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD0, 1, IMC1) },
559 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD1, 1, IMC1) },
560 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD2, 1, IMC1) },
561 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD3, 1, IMC1) },
562
563 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_CBO_SAD0, 0, SOCK) },
564 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_CBO_SAD1, 0, SOCK) },
565 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO0, 1, SOCK) },
566 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO1, 1, SOCK) },
567 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO2, 1, SOCK) },
568 { PCI_DESCR(PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO3, 1, SOCK) },
569 };
570
571 static const struct pci_id_table pci_dev_descr_haswell_table[] = {
572 PCI_ID_TABLE_ENTRY(pci_dev_descr_haswell, 13, 2, HASWELL),
573 {0,} /* 0 terminated list. */
574 };
575
576 /* Knight's Landing Support */
577 /*
578 * KNL's memory channels are swizzled between memory controllers.
579 * MC0 is mapped to CH3,4,5 and MC1 is mapped to CH0,1,2
580 */
581 #define knl_channel_remap(mc, chan) ((mc) ? (chan) : (chan) + 3)
582
583 /* Memory controller, TAD tables, error injection - 2-8-0, 2-9-0 (2 of these) */
584 #define PCI_DEVICE_ID_INTEL_KNL_IMC_MC 0x7840
585 /* DRAM channel stuff; bank addrs, dimmmtr, etc.. 2-8-2 - 2-9-4 (6 of these) */
586 #define PCI_DEVICE_ID_INTEL_KNL_IMC_CHAN 0x7843
587 /* kdrwdbu TAD limits/offsets, MCMTR - 2-10-1, 2-11-1 (2 of these) */
588 #define PCI_DEVICE_ID_INTEL_KNL_IMC_TA 0x7844
589 /* CHA broadcast registers, dram rules - 1-29-0 (1 of these) */
590 #define PCI_DEVICE_ID_INTEL_KNL_IMC_SAD0 0x782a
591 /* SAD target - 1-29-1 (1 of these) */
592 #define PCI_DEVICE_ID_INTEL_KNL_IMC_SAD1 0x782b
593 /* Caching / Home Agent */
594 #define PCI_DEVICE_ID_INTEL_KNL_IMC_CHA 0x782c
595 /* Device with TOLM and TOHM, 0-5-0 (1 of these) */
596 #define PCI_DEVICE_ID_INTEL_KNL_IMC_TOLHM 0x7810
597
598 /*
599 * KNL differs from SB, IB, and Haswell in that it has multiple
600 * instances of the same device with the same device ID, so we handle that
601 * by creating as many copies in the table as we expect to find.
602 * (Like device ID must be grouped together.)
603 */
604
605 static const struct pci_id_descr pci_dev_descr_knl[] = {
606 [0 ... 1] = { PCI_DESCR(PCI_DEVICE_ID_INTEL_KNL_IMC_MC, 0, IMC0)},
607 [2 ... 7] = { PCI_DESCR(PCI_DEVICE_ID_INTEL_KNL_IMC_CHAN, 0, IMC0) },
608 [8] = { PCI_DESCR(PCI_DEVICE_ID_INTEL_KNL_IMC_TA, 0, IMC0) },
609 [9] = { PCI_DESCR(PCI_DEVICE_ID_INTEL_KNL_IMC_TOLHM, 0, IMC0) },
610 [10] = { PCI_DESCR(PCI_DEVICE_ID_INTEL_KNL_IMC_SAD0, 0, SOCK) },
611 [11] = { PCI_DESCR(PCI_DEVICE_ID_INTEL_KNL_IMC_SAD1, 0, SOCK) },
612 [12 ... 49] = { PCI_DESCR(PCI_DEVICE_ID_INTEL_KNL_IMC_CHA, 0, SOCK) },
613 };
614
615 static const struct pci_id_table pci_dev_descr_knl_table[] = {
616 PCI_ID_TABLE_ENTRY(pci_dev_descr_knl, ARRAY_SIZE(pci_dev_descr_knl), 1, KNIGHTS_LANDING),
617 {0,}
618 };
619
620 /*
621 * Broadwell support
622 *
623 * DE processor:
624 * - 1 IMC
625 * - 2 DDR3 channels, 2 DPC per channel
626 * EP processor:
627 * - 1 or 2 IMC
628 * - 4 DDR4 channels, 3 DPC per channel
629 * EP 4S processor:
630 * - 2 IMC
631 * - 4 DDR4 channels, 3 DPC per channel
632 * EX processor:
633 * - 2 IMC
634 * - each IMC interfaces with a SMI 2 channel
635 * - each SMI channel interfaces with a scalable memory buffer
636 * - each scalable memory buffer supports 4 DDR3/DDR4 channels, 3 DPC
637 */
638 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_VTD_MISC 0x6f28
639 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0 0x6fa0
640 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1 0x6f60
641 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TA 0x6fa8
642 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TM 0x6f71
643 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TA 0x6f68
644 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TM 0x6f79
645 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD0 0x6ffc
646 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD1 0x6ffd
647 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD0 0x6faa
648 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD1 0x6fab
649 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD2 0x6fac
650 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD3 0x6fad
651 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD0 0x6f6a
652 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD1 0x6f6b
653 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD2 0x6f6c
654 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD3 0x6f6d
655 #define PCI_DEVICE_ID_INTEL_BROADWELL_IMC_DDRIO0 0x6faf
656
657 static const struct pci_id_descr pci_dev_descr_broadwell[] = {
658 /* first item must be the HA */
659 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0, 0, IMC0) },
660 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1, 1, IMC1) },
661
662 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TA, 0, IMC0) },
663 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TM, 0, IMC0) },
664 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD0, 0, IMC0) },
665 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD1, 0, IMC0) },
666 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD2, 1, IMC0) },
667 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD3, 1, IMC0) },
668
669 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TA, 1, IMC1) },
670 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TM, 1, IMC1) },
671 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD0, 1, IMC1) },
672 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD1, 1, IMC1) },
673 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD2, 1, IMC1) },
674 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD3, 1, IMC1) },
675
676 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD0, 0, SOCK) },
677 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD1, 0, SOCK) },
678 { PCI_DESCR(PCI_DEVICE_ID_INTEL_BROADWELL_IMC_DDRIO0, 1, SOCK) },
679 };
680
681 static const struct pci_id_table pci_dev_descr_broadwell_table[] = {
682 PCI_ID_TABLE_ENTRY(pci_dev_descr_broadwell, 10, 2, BROADWELL),
683 {0,} /* 0 terminated list. */
684 };
685
686
687 /****************************************************************************
688 Ancillary status routines
689 ****************************************************************************/
690
691 static inline int numrank(enum type type, u32 mtr)
692 {
693 int ranks = (1 << RANK_CNT_BITS(mtr));
694 int max = 4;
695
696 if (type == HASWELL || type == BROADWELL || type == KNIGHTS_LANDING)
697 max = 8;
698
699 if (ranks > max) {
700 edac_dbg(0, "Invalid number of ranks: %d (max = %i) raw value = %x (%04x)\n",
701 ranks, max, (unsigned int)RANK_CNT_BITS(mtr), mtr);
702 return -EINVAL;
703 }
704
705 return ranks;
706 }
707
708 static inline int numrow(u32 mtr)
709 {
710 int rows = (RANK_WIDTH_BITS(mtr) + 12);
711
712 if (rows < 13 || rows > 18) {
713 edac_dbg(0, "Invalid number of rows: %d (should be between 14 and 17) raw value = %x (%04x)\n",
714 rows, (unsigned int)RANK_WIDTH_BITS(mtr), mtr);
715 return -EINVAL;
716 }
717
718 return 1 << rows;
719 }
720
721 static inline int numcol(u32 mtr)
722 {
723 int cols = (COL_WIDTH_BITS(mtr) + 10);
724
725 if (cols > 12) {
726 edac_dbg(0, "Invalid number of cols: %d (max = 4) raw value = %x (%04x)\n",
727 cols, (unsigned int)COL_WIDTH_BITS(mtr), mtr);
728 return -EINVAL;
729 }
730
731 return 1 << cols;
732 }
733
734 static struct sbridge_dev *get_sbridge_dev(int seg, u8 bus, enum domain dom,
735 int multi_bus,
736 struct sbridge_dev *prev)
737 {
738 struct sbridge_dev *sbridge_dev;
739
740 /*
741 * If we have devices scattered across several busses that pertain
742 * to the same memory controller, we'll lump them all together.
743 */
744 if (multi_bus) {
745 return list_first_entry_or_null(&sbridge_edac_list,
746 struct sbridge_dev, list);
747 }
748
749 sbridge_dev = list_entry(prev ? prev->list.next
750 : sbridge_edac_list.next, struct sbridge_dev, list);
751
752 list_for_each_entry_from(sbridge_dev, &sbridge_edac_list, list) {
753 if ((sbridge_dev->seg == seg) && (sbridge_dev->bus == bus) &&
754 (dom == SOCK || dom == sbridge_dev->dom))
755 return sbridge_dev;
756 }
757
758 return NULL;
759 }
760
761 static struct sbridge_dev *alloc_sbridge_dev(int seg, u8 bus, enum domain dom,
762 const struct pci_id_table *table)
763 {
764 struct sbridge_dev *sbridge_dev;
765
766 sbridge_dev = kzalloc(sizeof(*sbridge_dev), GFP_KERNEL);
767 if (!sbridge_dev)
768 return NULL;
769
770 sbridge_dev->pdev = kcalloc(table->n_devs_per_imc,
771 sizeof(*sbridge_dev->pdev),
772 GFP_KERNEL);
773 if (!sbridge_dev->pdev) {
774 kfree(sbridge_dev);
775 return NULL;
776 }
777
778 sbridge_dev->seg = seg;
779 sbridge_dev->bus = bus;
780 sbridge_dev->dom = dom;
781 sbridge_dev->n_devs = table->n_devs_per_imc;
782 list_add_tail(&sbridge_dev->list, &sbridge_edac_list);
783
784 return sbridge_dev;
785 }
786
787 static void free_sbridge_dev(struct sbridge_dev *sbridge_dev)
788 {
789 list_del(&sbridge_dev->list);
790 kfree(sbridge_dev->pdev);
791 kfree(sbridge_dev);
792 }
793
794 static u64 sbridge_get_tolm(struct sbridge_pvt *pvt)
795 {
796 u32 reg;
797
798 /* Address range is 32:28 */
799 pci_read_config_dword(pvt->pci_sad1, TOLM, &reg);
800 return GET_TOLM(reg);
801 }
802
803 static u64 sbridge_get_tohm(struct sbridge_pvt *pvt)
804 {
805 u32 reg;
806
807 pci_read_config_dword(pvt->pci_sad1, TOHM, &reg);
808 return GET_TOHM(reg);
809 }
810
811 static u64 ibridge_get_tolm(struct sbridge_pvt *pvt)
812 {
813 u32 reg;
814
815 pci_read_config_dword(pvt->pci_br1, TOLM, &reg);
816
817 return GET_TOLM(reg);
818 }
819
820 static u64 ibridge_get_tohm(struct sbridge_pvt *pvt)
821 {
822 u32 reg;
823
824 pci_read_config_dword(pvt->pci_br1, TOHM, &reg);
825
826 return GET_TOHM(reg);
827 }
828
829 static u64 rir_limit(u32 reg)
830 {
831 return ((u64)GET_BITFIELD(reg, 1, 10) << 29) | 0x1fffffff;
832 }
833
834 static u64 sad_limit(u32 reg)
835 {
836 return (GET_BITFIELD(reg, 6, 25) << 26) | 0x3ffffff;
837 }
838
839 static u32 interleave_mode(u32 reg)
840 {
841 return GET_BITFIELD(reg, 1, 1);
842 }
843
844 static u32 dram_attr(u32 reg)
845 {
846 return GET_BITFIELD(reg, 2, 3);
847 }
848
849 static u64 knl_sad_limit(u32 reg)
850 {
851 return (GET_BITFIELD(reg, 7, 26) << 26) | 0x3ffffff;
852 }
853
854 static u32 knl_interleave_mode(u32 reg)
855 {
856 return GET_BITFIELD(reg, 1, 2);
857 }
858
859 static const char * const knl_intlv_mode[] = {
860 "[8:6]", "[10:8]", "[14:12]", "[32:30]"
861 };
862
863 static const char *get_intlv_mode_str(u32 reg, enum type t)
864 {
865 if (t == KNIGHTS_LANDING)
866 return knl_intlv_mode[knl_interleave_mode(reg)];
867 else
868 return interleave_mode(reg) ? "[8:6]" : "[8:6]XOR[18:16]";
869 }
870
871 static u32 dram_attr_knl(u32 reg)
872 {
873 return GET_BITFIELD(reg, 3, 4);
874 }
875
876
877 static enum mem_type get_memory_type(struct sbridge_pvt *pvt)
878 {
879 u32 reg;
880 enum mem_type mtype;
881
882 if (pvt->pci_ddrio) {
883 pci_read_config_dword(pvt->pci_ddrio, pvt->info.rankcfgr,
884 &reg);
885 if (GET_BITFIELD(reg, 11, 11))
886 /* FIXME: Can also be LRDIMM */
887 mtype = MEM_RDDR3;
888 else
889 mtype = MEM_DDR3;
890 } else
891 mtype = MEM_UNKNOWN;
892
893 return mtype;
894 }
895
896 static enum mem_type haswell_get_memory_type(struct sbridge_pvt *pvt)
897 {
898 u32 reg;
899 bool registered = false;
900 enum mem_type mtype = MEM_UNKNOWN;
901
902 if (!pvt->pci_ddrio)
903 goto out;
904
905 pci_read_config_dword(pvt->pci_ddrio,
906 HASWELL_DDRCRCLKCONTROLS, &reg);
907 /* Is_Rdimm */
908 if (GET_BITFIELD(reg, 16, 16))
909 registered = true;
910
911 pci_read_config_dword(pvt->pci_ta, MCMTR, &reg);
912 if (GET_BITFIELD(reg, 14, 14)) {
913 if (registered)
914 mtype = MEM_RDDR4;
915 else
916 mtype = MEM_DDR4;
917 } else {
918 if (registered)
919 mtype = MEM_RDDR3;
920 else
921 mtype = MEM_DDR3;
922 }
923
924 out:
925 return mtype;
926 }
927
928 static enum dev_type knl_get_width(struct sbridge_pvt *pvt, u32 mtr)
929 {
930 /* for KNL value is fixed */
931 return DEV_X16;
932 }
933
934 static enum dev_type sbridge_get_width(struct sbridge_pvt *pvt, u32 mtr)
935 {
936 /* there's no way to figure out */
937 return DEV_UNKNOWN;
938 }
939
940 static enum dev_type __ibridge_get_width(u32 mtr)
941 {
942 enum dev_type type = DEV_UNKNOWN;
943
944 switch (mtr) {
945 case 2:
946 type = DEV_X16;
947 break;
948 case 1:
949 type = DEV_X8;
950 break;
951 case 0:
952 type = DEV_X4;
953 break;
954 }
955
956 return type;
957 }
958
959 static enum dev_type ibridge_get_width(struct sbridge_pvt *pvt, u32 mtr)
960 {
961 /*
962 * ddr3_width on the documentation but also valid for DDR4 on
963 * Haswell
964 */
965 return __ibridge_get_width(GET_BITFIELD(mtr, 7, 8));
966 }
967
968 static enum dev_type broadwell_get_width(struct sbridge_pvt *pvt, u32 mtr)
969 {
970 /* ddr3_width on the documentation but also valid for DDR4 */
971 return __ibridge_get_width(GET_BITFIELD(mtr, 8, 9));
972 }
973
974 static enum mem_type knl_get_memory_type(struct sbridge_pvt *pvt)
975 {
976 /* DDR4 RDIMMS and LRDIMMS are supported */
977 return MEM_RDDR4;
978 }
979
980 static u8 get_node_id(struct sbridge_pvt *pvt)
981 {
982 u32 reg;
983 pci_read_config_dword(pvt->pci_br0, SAD_CONTROL, &reg);
984 return GET_BITFIELD(reg, 0, 2);
985 }
986
987 static u8 haswell_get_node_id(struct sbridge_pvt *pvt)
988 {
989 u32 reg;
990
991 pci_read_config_dword(pvt->pci_sad1, SAD_CONTROL, &reg);
992 return GET_BITFIELD(reg, 0, 3);
993 }
994
995 static u8 knl_get_node_id(struct sbridge_pvt *pvt)
996 {
997 u32 reg;
998
999 pci_read_config_dword(pvt->pci_sad1, SAD_CONTROL, &reg);
1000 return GET_BITFIELD(reg, 0, 2);
1001 }
1002
1003 /*
1004 * Use the reporting bank number to determine which memory
1005 * controller (also known as "ha" for "home agent"). Sandy
1006 * Bridge only has one memory controller per socket, so the
1007 * answer is always zero.
1008 */
1009 static u8 sbridge_get_ha(u8 bank)
1010 {
1011 return 0;
1012 }
1013
1014 /*
1015 * On Ivy Bridge, Haswell and Broadwell the error may be in a
1016 * home agent bank (7, 8), or one of the per-channel memory
1017 * controller banks (9 .. 16).
1018 */
1019 static u8 ibridge_get_ha(u8 bank)
1020 {
1021 switch (bank) {
1022 case 7 ... 8:
1023 return bank - 7;
1024 case 9 ... 16:
1025 return (bank - 9) / 4;
1026 default:
1027 return 0xff;
1028 }
1029 }
1030
1031 /* Not used, but included for safety/symmetry */
1032 static u8 knl_get_ha(u8 bank)
1033 {
1034 return 0xff;
1035 }
1036
1037 static u64 haswell_get_tolm(struct sbridge_pvt *pvt)
1038 {
1039 u32 reg;
1040
1041 pci_read_config_dword(pvt->info.pci_vtd, HASWELL_TOLM, &reg);
1042 return (GET_BITFIELD(reg, 26, 31) << 26) | 0x3ffffff;
1043 }
1044
1045 static u64 haswell_get_tohm(struct sbridge_pvt *pvt)
1046 {
1047 u64 rc;
1048 u32 reg;
1049
1050 pci_read_config_dword(pvt->info.pci_vtd, HASWELL_TOHM_0, &reg);
1051 rc = GET_BITFIELD(reg, 26, 31);
1052 pci_read_config_dword(pvt->info.pci_vtd, HASWELL_TOHM_1, &reg);
1053 rc = ((reg << 6) | rc) << 26;
1054
1055 return rc | 0x1ffffff;
1056 }
1057
1058 static u64 knl_get_tolm(struct sbridge_pvt *pvt)
1059 {
1060 u32 reg;
1061
1062 pci_read_config_dword(pvt->knl.pci_mc_info, KNL_TOLM, &reg);
1063 return (GET_BITFIELD(reg, 26, 31) << 26) | 0x3ffffff;
1064 }
1065
1066 static u64 knl_get_tohm(struct sbridge_pvt *pvt)
1067 {
1068 u64 rc;
1069 u32 reg_lo, reg_hi;
1070
1071 pci_read_config_dword(pvt->knl.pci_mc_info, KNL_TOHM_0, &reg_lo);
1072 pci_read_config_dword(pvt->knl.pci_mc_info, KNL_TOHM_1, &reg_hi);
1073 rc = ((u64)reg_hi << 32) | reg_lo;
1074 return rc | 0x3ffffff;
1075 }
1076
1077
1078 static u64 haswell_rir_limit(u32 reg)
1079 {
1080 return (((u64)GET_BITFIELD(reg, 1, 11) + 1) << 29) - 1;
1081 }
1082
1083 static inline u8 sad_pkg_socket(u8 pkg)
1084 {
1085 /* on Ivy Bridge, nodeID is SASS, where A is HA and S is node id */
1086 return ((pkg >> 3) << 2) | (pkg & 0x3);
1087 }
1088
1089 static inline u8 sad_pkg_ha(u8 pkg)
1090 {
1091 return (pkg >> 2) & 0x1;
1092 }
1093
1094 static int haswell_chan_hash(int idx, u64 addr)
1095 {
1096 int i;
1097
1098 /*
1099 * XOR even bits from 12:26 to bit0 of idx,
1100 * odd bits from 13:27 to bit1
1101 */
1102 for (i = 12; i < 28; i += 2)
1103 idx ^= (addr >> i) & 3;
1104
1105 return idx;
1106 }
1107
1108 /* Low bits of TAD limit, and some metadata. */
1109 static const u32 knl_tad_dram_limit_lo[] = {
1110 0x400, 0x500, 0x600, 0x700,
1111 0x800, 0x900, 0xa00, 0xb00,
1112 };
1113
1114 /* Low bits of TAD offset. */
1115 static const u32 knl_tad_dram_offset_lo[] = {
1116 0x404, 0x504, 0x604, 0x704,
1117 0x804, 0x904, 0xa04, 0xb04,
1118 };
1119
1120 /* High 16 bits of TAD limit and offset. */
1121 static const u32 knl_tad_dram_hi[] = {
1122 0x408, 0x508, 0x608, 0x708,
1123 0x808, 0x908, 0xa08, 0xb08,
1124 };
1125
1126 /* Number of ways a tad entry is interleaved. */
1127 static const u32 knl_tad_ways[] = {
1128 8, 6, 4, 3, 2, 1,
1129 };
1130
1131 /*
1132 * Retrieve the n'th Target Address Decode table entry
1133 * from the memory controller's TAD table.
1134 *
1135 * @pvt: driver private data
1136 * @entry: which entry you want to retrieve
1137 * @mc: which memory controller (0 or 1)
1138 * @offset: output tad range offset
1139 * @limit: output address of first byte above tad range
1140 * @ways: output number of interleave ways
1141 *
1142 * The offset value has curious semantics. It's a sort of running total
1143 * of the sizes of all the memory regions that aren't mapped in this
1144 * tad table.
1145 */
1146 static int knl_get_tad(const struct sbridge_pvt *pvt,
1147 const int entry,
1148 const int mc,
1149 u64 *offset,
1150 u64 *limit,
1151 int *ways)
1152 {
1153 u32 reg_limit_lo, reg_offset_lo, reg_hi;
1154 struct pci_dev *pci_mc;
1155 int way_id;
1156
1157 switch (mc) {
1158 case 0:
1159 pci_mc = pvt->knl.pci_mc0;
1160 break;
1161 case 1:
1162 pci_mc = pvt->knl.pci_mc1;
1163 break;
1164 default:
1165 WARN_ON(1);
1166 return -EINVAL;
1167 }
1168
1169 pci_read_config_dword(pci_mc,
1170 knl_tad_dram_limit_lo[entry], &reg_limit_lo);
1171 pci_read_config_dword(pci_mc,
1172 knl_tad_dram_offset_lo[entry], &reg_offset_lo);
1173 pci_read_config_dword(pci_mc,
1174 knl_tad_dram_hi[entry], &reg_hi);
1175
1176 /* Is this TAD entry enabled? */
1177 if (!GET_BITFIELD(reg_limit_lo, 0, 0))
1178 return -ENODEV;
1179
1180 way_id = GET_BITFIELD(reg_limit_lo, 3, 5);
1181
1182 if (way_id < ARRAY_SIZE(knl_tad_ways)) {
1183 *ways = knl_tad_ways[way_id];
1184 } else {
1185 *ways = 0;
1186 sbridge_printk(KERN_ERR,
1187 "Unexpected value %d in mc_tad_limit_lo wayness field\n",
1188 way_id);
1189 return -ENODEV;
1190 }
1191
1192 /*
1193 * The least significant 6 bits of base and limit are truncated.
1194 * For limit, we fill the missing bits with 1s.
1195 */
1196 *offset = ((u64) GET_BITFIELD(reg_offset_lo, 6, 31) << 6) |
1197 ((u64) GET_BITFIELD(reg_hi, 0, 15) << 32);
1198 *limit = ((u64) GET_BITFIELD(reg_limit_lo, 6, 31) << 6) | 63 |
1199 ((u64) GET_BITFIELD(reg_hi, 16, 31) << 32);
1200
1201 return 0;
1202 }
1203
1204 /* Determine which memory controller is responsible for a given channel. */
1205 static int knl_channel_mc(int channel)
1206 {
1207 WARN_ON(channel < 0 || channel >= 6);
1208
1209 return channel < 3 ? 1 : 0;
1210 }
1211
1212 /*
1213 * Get the Nth entry from EDC_ROUTE_TABLE register.
1214 * (This is the per-tile mapping of logical interleave targets to
1215 * physical EDC modules.)
1216 *
1217 * entry 0: 0:2
1218 * 1: 3:5
1219 * 2: 6:8
1220 * 3: 9:11
1221 * 4: 12:14
1222 * 5: 15:17
1223 * 6: 18:20
1224 * 7: 21:23
1225 * reserved: 24:31
1226 */
1227 static u32 knl_get_edc_route(int entry, u32 reg)
1228 {
1229 WARN_ON(entry >= KNL_MAX_EDCS);
1230 return GET_BITFIELD(reg, entry*3, (entry*3)+2);
1231 }
1232
1233 /*
1234 * Get the Nth entry from MC_ROUTE_TABLE register.
1235 * (This is the per-tile mapping of logical interleave targets to
1236 * physical DRAM channels modules.)
1237 *
1238 * entry 0: mc 0:2 channel 18:19
1239 * 1: mc 3:5 channel 20:21
1240 * 2: mc 6:8 channel 22:23
1241 * 3: mc 9:11 channel 24:25
1242 * 4: mc 12:14 channel 26:27
1243 * 5: mc 15:17 channel 28:29
1244 * reserved: 30:31
1245 *
1246 * Though we have 3 bits to identify the MC, we should only see
1247 * the values 0 or 1.
1248 */
1249
1250 static u32 knl_get_mc_route(int entry, u32 reg)
1251 {
1252 int mc, chan;
1253
1254 WARN_ON(entry >= KNL_MAX_CHANNELS);
1255
1256 mc = GET_BITFIELD(reg, entry*3, (entry*3)+2);
1257 chan = GET_BITFIELD(reg, (entry*2) + 18, (entry*2) + 18 + 1);
1258
1259 return knl_channel_remap(mc, chan);
1260 }
1261
1262 /*
1263 * Render the EDC_ROUTE register in human-readable form.
1264 * Output string s should be at least KNL_MAX_EDCS*2 bytes.
1265 */
1266 static void knl_show_edc_route(u32 reg, char *s)
1267 {
1268 int i;
1269
1270 for (i = 0; i < KNL_MAX_EDCS; i++) {
1271 s[i*2] = knl_get_edc_route(i, reg) + '0';
1272 s[i*2+1] = '-';
1273 }
1274
1275 s[KNL_MAX_EDCS*2 - 1] = '\0';
1276 }
1277
1278 /*
1279 * Render the MC_ROUTE register in human-readable form.
1280 * Output string s should be at least KNL_MAX_CHANNELS*2 bytes.
1281 */
1282 static void knl_show_mc_route(u32 reg, char *s)
1283 {
1284 int i;
1285
1286 for (i = 0; i < KNL_MAX_CHANNELS; i++) {
1287 s[i*2] = knl_get_mc_route(i, reg) + '0';
1288 s[i*2+1] = '-';
1289 }
1290
1291 s[KNL_MAX_CHANNELS*2 - 1] = '\0';
1292 }
1293
1294 #define KNL_EDC_ROUTE 0xb8
1295 #define KNL_MC_ROUTE 0xb4
1296
1297 /* Is this dram rule backed by regular DRAM in flat mode? */
1298 #define KNL_EDRAM(reg) GET_BITFIELD(reg, 29, 29)
1299
1300 /* Is this dram rule cached? */
1301 #define KNL_CACHEABLE(reg) GET_BITFIELD(reg, 28, 28)
1302
1303 /* Is this rule backed by edc ? */
1304 #define KNL_EDRAM_ONLY(reg) GET_BITFIELD(reg, 29, 29)
1305
1306 /* Is this rule backed by DRAM, cacheable in EDRAM? */
1307 #define KNL_CACHEABLE(reg) GET_BITFIELD(reg, 28, 28)
1308
1309 /* Is this rule mod3? */
1310 #define KNL_MOD3(reg) GET_BITFIELD(reg, 27, 27)
1311
1312 /*
1313 * Figure out how big our RAM modules are.
1314 *
1315 * The DIMMMTR register in KNL doesn't tell us the size of the DIMMs, so we
1316 * have to figure this out from the SAD rules, interleave lists, route tables,
1317 * and TAD rules.
1318 *
1319 * SAD rules can have holes in them (e.g. the 3G-4G hole), so we have to
1320 * inspect the TAD rules to figure out how large the SAD regions really are.
1321 *
1322 * When we know the real size of a SAD region and how many ways it's
1323 * interleaved, we know the individual contribution of each channel to
1324 * TAD is size/ways.
1325 *
1326 * Finally, we have to check whether each channel participates in each SAD
1327 * region.
1328 *
1329 * Fortunately, KNL only supports one DIMM per channel, so once we know how
1330 * much memory the channel uses, we know the DIMM is at least that large.
1331 * (The BIOS might possibly choose not to map all available memory, in which
1332 * case we will underreport the size of the DIMM.)
1333 *
1334 * In theory, we could try to determine the EDC sizes as well, but that would
1335 * only work in flat mode, not in cache mode.
1336 *
1337 * @mc_sizes: Output sizes of channels (must have space for KNL_MAX_CHANNELS
1338 * elements)
1339 */
1340 static int knl_get_dimm_capacity(struct sbridge_pvt *pvt, u64 *mc_sizes)
1341 {
1342 u64 sad_base, sad_limit = 0;
1343 u64 tad_base, tad_size, tad_limit, tad_deadspace, tad_livespace;
1344 int sad_rule = 0;
1345 int tad_rule = 0;
1346 int intrlv_ways, tad_ways;
1347 u32 first_pkg, pkg;
1348 int i;
1349 u64 sad_actual_size[2]; /* sad size accounting for holes, per mc */
1350 u32 dram_rule, interleave_reg;
1351 u32 mc_route_reg[KNL_MAX_CHAS];
1352 u32 edc_route_reg[KNL_MAX_CHAS];
1353 int edram_only;
1354 char edc_route_string[KNL_MAX_EDCS*2];
1355 char mc_route_string[KNL_MAX_CHANNELS*2];
1356 int cur_reg_start;
1357 int mc;
1358 int channel;
1359 int participants[KNL_MAX_CHANNELS];
1360
1361 for (i = 0; i < KNL_MAX_CHANNELS; i++)
1362 mc_sizes[i] = 0;
1363
1364 /* Read the EDC route table in each CHA. */
1365 cur_reg_start = 0;
1366 for (i = 0; i < KNL_MAX_CHAS; i++) {
1367 pci_read_config_dword(pvt->knl.pci_cha[i],
1368 KNL_EDC_ROUTE, &edc_route_reg[i]);
1369
1370 if (i > 0 && edc_route_reg[i] != edc_route_reg[i-1]) {
1371 knl_show_edc_route(edc_route_reg[i-1],
1372 edc_route_string);
1373 if (cur_reg_start == i-1)
1374 edac_dbg(0, "edc route table for CHA %d: %s\n",
1375 cur_reg_start, edc_route_string);
1376 else
1377 edac_dbg(0, "edc route table for CHA %d-%d: %s\n",
1378 cur_reg_start, i-1, edc_route_string);
1379 cur_reg_start = i;
1380 }
1381 }
1382 knl_show_edc_route(edc_route_reg[i-1], edc_route_string);
1383 if (cur_reg_start == i-1)
1384 edac_dbg(0, "edc route table for CHA %d: %s\n",
1385 cur_reg_start, edc_route_string);
1386 else
1387 edac_dbg(0, "edc route table for CHA %d-%d: %s\n",
1388 cur_reg_start, i-1, edc_route_string);
1389
1390 /* Read the MC route table in each CHA. */
1391 cur_reg_start = 0;
1392 for (i = 0; i < KNL_MAX_CHAS; i++) {
1393 pci_read_config_dword(pvt->knl.pci_cha[i],
1394 KNL_MC_ROUTE, &mc_route_reg[i]);
1395
1396 if (i > 0 && mc_route_reg[i] != mc_route_reg[i-1]) {
1397 knl_show_mc_route(mc_route_reg[i-1], mc_route_string);
1398 if (cur_reg_start == i-1)
1399 edac_dbg(0, "mc route table for CHA %d: %s\n",
1400 cur_reg_start, mc_route_string);
1401 else
1402 edac_dbg(0, "mc route table for CHA %d-%d: %s\n",
1403 cur_reg_start, i-1, mc_route_string);
1404 cur_reg_start = i;
1405 }
1406 }
1407 knl_show_mc_route(mc_route_reg[i-1], mc_route_string);
1408 if (cur_reg_start == i-1)
1409 edac_dbg(0, "mc route table for CHA %d: %s\n",
1410 cur_reg_start, mc_route_string);
1411 else
1412 edac_dbg(0, "mc route table for CHA %d-%d: %s\n",
1413 cur_reg_start, i-1, mc_route_string);
1414
1415 /* Process DRAM rules */
1416 for (sad_rule = 0; sad_rule < pvt->info.max_sad; sad_rule++) {
1417 /* previous limit becomes the new base */
1418 sad_base = sad_limit;
1419
1420 pci_read_config_dword(pvt->pci_sad0,
1421 pvt->info.dram_rule[sad_rule], &dram_rule);
1422
1423 if (!DRAM_RULE_ENABLE(dram_rule))
1424 break;
1425
1426 edram_only = KNL_EDRAM_ONLY(dram_rule);
1427
1428 sad_limit = pvt->info.sad_limit(dram_rule)+1;
1429
1430 pci_read_config_dword(pvt->pci_sad0,
1431 pvt->info.interleave_list[sad_rule], &interleave_reg);
1432
1433 /*
1434 * Find out how many ways this dram rule is interleaved.
1435 * We stop when we see the first channel again.
1436 */
1437 first_pkg = sad_pkg(pvt->info.interleave_pkg,
1438 interleave_reg, 0);
1439 for (intrlv_ways = 1; intrlv_ways < 8; intrlv_ways++) {
1440 pkg = sad_pkg(pvt->info.interleave_pkg,
1441 interleave_reg, intrlv_ways);
1442
1443 if ((pkg & 0x8) == 0) {
1444 /*
1445 * 0 bit means memory is non-local,
1446 * which KNL doesn't support
1447 */
1448 edac_dbg(0, "Unexpected interleave target %d\n",
1449 pkg);
1450 return -1;
1451 }
1452
1453 if (pkg == first_pkg)
1454 break;
1455 }
1456 if (KNL_MOD3(dram_rule))
1457 intrlv_ways *= 3;
1458
1459 edac_dbg(3, "dram rule %d (base 0x%llx, limit 0x%llx), %d way interleave%s\n",
1460 sad_rule,
1461 sad_base,
1462 sad_limit,
1463 intrlv_ways,
1464 edram_only ? ", EDRAM" : "");
1465
1466 /*
1467 * Find out how big the SAD region really is by iterating
1468 * over TAD tables (SAD regions may contain holes).
1469 * Each memory controller might have a different TAD table, so
1470 * we have to look at both.
1471 *
1472 * Livespace is the memory that's mapped in this TAD table,
1473 * deadspace is the holes (this could be the MMIO hole, or it
1474 * could be memory that's mapped by the other TAD table but
1475 * not this one).
1476 */
1477 for (mc = 0; mc < 2; mc++) {
1478 sad_actual_size[mc] = 0;
1479 tad_livespace = 0;
1480 for (tad_rule = 0;
1481 tad_rule < ARRAY_SIZE(
1482 knl_tad_dram_limit_lo);
1483 tad_rule++) {
1484 if (knl_get_tad(pvt,
1485 tad_rule,
1486 mc,
1487 &tad_deadspace,
1488 &tad_limit,
1489 &tad_ways))
1490 break;
1491
1492 tad_size = (tad_limit+1) -
1493 (tad_livespace + tad_deadspace);
1494 tad_livespace += tad_size;
1495 tad_base = (tad_limit+1) - tad_size;
1496
1497 if (tad_base < sad_base) {
1498 if (tad_limit > sad_base)
1499 edac_dbg(0, "TAD region overlaps lower SAD boundary -- TAD tables may be configured incorrectly.\n");
1500 } else if (tad_base < sad_limit) {
1501 if (tad_limit+1 > sad_limit) {
1502 edac_dbg(0, "TAD region overlaps upper SAD boundary -- TAD tables may be configured incorrectly.\n");
1503 } else {
1504 /* TAD region is completely inside SAD region */
1505 edac_dbg(3, "TAD region %d 0x%llx - 0x%llx (%lld bytes) table%d\n",
1506 tad_rule, tad_base,
1507 tad_limit, tad_size,
1508 mc);
1509 sad_actual_size[mc] += tad_size;
1510 }
1511 }
1512 }
1513 }
1514
1515 for (mc = 0; mc < 2; mc++) {
1516 edac_dbg(3, " total TAD DRAM footprint in table%d : 0x%llx (%lld bytes)\n",
1517 mc, sad_actual_size[mc], sad_actual_size[mc]);
1518 }
1519
1520 /* Ignore EDRAM rule */
1521 if (edram_only)
1522 continue;
1523
1524 /* Figure out which channels participate in interleave. */
1525 for (channel = 0; channel < KNL_MAX_CHANNELS; channel++)
1526 participants[channel] = 0;
1527
1528 /* For each channel, does at least one CHA have
1529 * this channel mapped to the given target?
1530 */
1531 for (channel = 0; channel < KNL_MAX_CHANNELS; channel++) {
1532 int target;
1533 int cha;
1534
1535 for (target = 0; target < KNL_MAX_CHANNELS; target++) {
1536 for (cha = 0; cha < KNL_MAX_CHAS; cha++) {
1537 if (knl_get_mc_route(target,
1538 mc_route_reg[cha]) == channel
1539 && !participants[channel]) {
1540 participants[channel] = 1;
1541 break;
1542 }
1543 }
1544 }
1545 }
1546
1547 for (channel = 0; channel < KNL_MAX_CHANNELS; channel++) {
1548 mc = knl_channel_mc(channel);
1549 if (participants[channel]) {
1550 edac_dbg(4, "mc channel %d contributes %lld bytes via sad entry %d\n",
1551 channel,
1552 sad_actual_size[mc]/intrlv_ways,
1553 sad_rule);
1554 mc_sizes[channel] +=
1555 sad_actual_size[mc]/intrlv_ways;
1556 }
1557 }
1558 }
1559
1560 return 0;
1561 }
1562
1563 static void get_source_id(struct mem_ctl_info *mci)
1564 {
1565 struct sbridge_pvt *pvt = mci->pvt_info;
1566 u32 reg;
1567
1568 if (pvt->info.type == HASWELL || pvt->info.type == BROADWELL ||
1569 pvt->info.type == KNIGHTS_LANDING)
1570 pci_read_config_dword(pvt->pci_sad1, SAD_TARGET, &reg);
1571 else
1572 pci_read_config_dword(pvt->pci_br0, SAD_TARGET, &reg);
1573
1574 if (pvt->info.type == KNIGHTS_LANDING)
1575 pvt->sbridge_dev->source_id = SOURCE_ID_KNL(reg);
1576 else
1577 pvt->sbridge_dev->source_id = SOURCE_ID(reg);
1578 }
1579
1580 static int __populate_dimms(struct mem_ctl_info *mci,
1581 u64 knl_mc_sizes[KNL_MAX_CHANNELS],
1582 enum edac_type mode)
1583 {
1584 struct sbridge_pvt *pvt = mci->pvt_info;
1585 int channels = pvt->info.type == KNIGHTS_LANDING ? KNL_MAX_CHANNELS
1586 : NUM_CHANNELS;
1587 unsigned int i, j, banks, ranks, rows, cols, npages;
1588 struct dimm_info *dimm;
1589 enum mem_type mtype;
1590 u64 size;
1591
1592 mtype = pvt->info.get_memory_type(pvt);
1593 if (mtype == MEM_RDDR3 || mtype == MEM_RDDR4)
1594 edac_dbg(0, "Memory is registered\n");
1595 else if (mtype == MEM_UNKNOWN)
1596 edac_dbg(0, "Cannot determine memory type\n");
1597 else
1598 edac_dbg(0, "Memory is unregistered\n");
1599
1600 if (mtype == MEM_DDR4 || mtype == MEM_RDDR4)
1601 banks = 16;
1602 else
1603 banks = 8;
1604
1605 for (i = 0; i < channels; i++) {
1606 u32 mtr;
1607
1608 int max_dimms_per_channel;
1609
1610 if (pvt->info.type == KNIGHTS_LANDING) {
1611 max_dimms_per_channel = 1;
1612 if (!pvt->knl.pci_channel[i])
1613 continue;
1614 } else {
1615 max_dimms_per_channel = ARRAY_SIZE(mtr_regs);
1616 if (!pvt->pci_tad[i])
1617 continue;
1618 }
1619
1620 for (j = 0; j < max_dimms_per_channel; j++) {
1621 dimm = edac_get_dimm(mci, i, j, 0);
1622 if (pvt->info.type == KNIGHTS_LANDING) {
1623 pci_read_config_dword(pvt->knl.pci_channel[i],
1624 knl_mtr_reg, &mtr);
1625 } else {
1626 pci_read_config_dword(pvt->pci_tad[i],
1627 mtr_regs[j], &mtr);
1628 }
1629 edac_dbg(4, "Channel #%d MTR%d = %x\n", i, j, mtr);
1630 if (IS_DIMM_PRESENT(mtr)) {
1631 if (!IS_ECC_ENABLED(pvt->info.mcmtr)) {
1632 sbridge_printk(KERN_ERR, "CPU SrcID #%d, Ha #%d, Channel #%d has DIMMs, but ECC is disabled\n",
1633 pvt->sbridge_dev->source_id,
1634 pvt->sbridge_dev->dom, i);
1635 return -ENODEV;
1636 }
1637 pvt->channel[i].dimms++;
1638
1639 ranks = numrank(pvt->info.type, mtr);
1640
1641 if (pvt->info.type == KNIGHTS_LANDING) {
1642 /* For DDR4, this is fixed. */
1643 cols = 1 << 10;
1644 rows = knl_mc_sizes[i] /
1645 ((u64) cols * ranks * banks * 8);
1646 } else {
1647 rows = numrow(mtr);
1648 cols = numcol(mtr);
1649 }
1650
1651 size = ((u64)rows * cols * banks * ranks) >> (20 - 3);
1652 npages = MiB_TO_PAGES(size);
1653
1654 edac_dbg(0, "mc#%d: ha %d channel %d, dimm %d, %lld MiB (%d pages) bank: %d, rank: %d, row: %#x, col: %#x\n",
1655 pvt->sbridge_dev->mc, pvt->sbridge_dev->dom, i, j,
1656 size, npages,
1657 banks, ranks, rows, cols);
1658
1659 dimm->nr_pages = npages;
1660 dimm->grain = 32;
1661 dimm->dtype = pvt->info.get_width(pvt, mtr);
1662 dimm->mtype = mtype;
1663 dimm->edac_mode = mode;
1664 snprintf(dimm->label, sizeof(dimm->label),
1665 "CPU_SrcID#%u_Ha#%u_Chan#%u_DIMM#%u",
1666 pvt->sbridge_dev->source_id, pvt->sbridge_dev->dom, i, j);
1667 }
1668 }
1669 }
1670
1671 return 0;
1672 }
1673
1674 static int get_dimm_config(struct mem_ctl_info *mci)
1675 {
1676 struct sbridge_pvt *pvt = mci->pvt_info;
1677 u64 knl_mc_sizes[KNL_MAX_CHANNELS];
1678 enum edac_type mode;
1679 u32 reg;
1680
1681 pvt->sbridge_dev->node_id = pvt->info.get_node_id(pvt);
1682 edac_dbg(0, "mc#%d: Node ID: %d, source ID: %d\n",
1683 pvt->sbridge_dev->mc,
1684 pvt->sbridge_dev->node_id,
1685 pvt->sbridge_dev->source_id);
1686
1687 /* KNL doesn't support mirroring or lockstep,
1688 * and is always closed page
1689 */
1690 if (pvt->info.type == KNIGHTS_LANDING) {
1691 mode = EDAC_S4ECD4ED;
1692 pvt->mirror_mode = NON_MIRRORING;
1693 pvt->is_cur_addr_mirrored = false;
1694
1695 if (knl_get_dimm_capacity(pvt, knl_mc_sizes) != 0)
1696 return -1;
1697 if (pci_read_config_dword(pvt->pci_ta, KNL_MCMTR, &pvt->info.mcmtr)) {
1698 edac_dbg(0, "Failed to read KNL_MCMTR register\n");
1699 return -ENODEV;
1700 }
1701 } else {
1702 if (pvt->info.type == HASWELL || pvt->info.type == BROADWELL) {
1703 if (pci_read_config_dword(pvt->pci_ha, HASWELL_HASYSDEFEATURE2, &reg)) {
1704 edac_dbg(0, "Failed to read HASWELL_HASYSDEFEATURE2 register\n");
1705 return -ENODEV;
1706 }
1707 pvt->is_chan_hash = GET_BITFIELD(reg, 21, 21);
1708 if (GET_BITFIELD(reg, 28, 28)) {
1709 pvt->mirror_mode = ADDR_RANGE_MIRRORING;
1710 edac_dbg(0, "Address range partial memory mirroring is enabled\n");
1711 goto next;
1712 }
1713 }
1714 if (pci_read_config_dword(pvt->pci_ras, RASENABLES, &reg)) {
1715 edac_dbg(0, "Failed to read RASENABLES register\n");
1716 return -ENODEV;
1717 }
1718 if (IS_MIRROR_ENABLED(reg)) {
1719 pvt->mirror_mode = FULL_MIRRORING;
1720 edac_dbg(0, "Full memory mirroring is enabled\n");
1721 } else {
1722 pvt->mirror_mode = NON_MIRRORING;
1723 edac_dbg(0, "Memory mirroring is disabled\n");
1724 }
1725
1726 next:
1727 if (pci_read_config_dword(pvt->pci_ta, MCMTR, &pvt->info.mcmtr)) {
1728 edac_dbg(0, "Failed to read MCMTR register\n");
1729 return -ENODEV;
1730 }
1731 if (IS_LOCKSTEP_ENABLED(pvt->info.mcmtr)) {
1732 edac_dbg(0, "Lockstep is enabled\n");
1733 mode = EDAC_S8ECD8ED;
1734 pvt->is_lockstep = true;
1735 } else {
1736 edac_dbg(0, "Lockstep is disabled\n");
1737 mode = EDAC_S4ECD4ED;
1738 pvt->is_lockstep = false;
1739 }
1740 if (IS_CLOSE_PG(pvt->info.mcmtr)) {
1741 edac_dbg(0, "address map is on closed page mode\n");
1742 pvt->is_close_pg = true;
1743 } else {
1744 edac_dbg(0, "address map is on open page mode\n");
1745 pvt->is_close_pg = false;
1746 }
1747 }
1748
1749 return __populate_dimms(mci, knl_mc_sizes, mode);
1750 }
1751
1752 static void get_memory_layout(const struct mem_ctl_info *mci)
1753 {
1754 struct sbridge_pvt *pvt = mci->pvt_info;
1755 int i, j, k, n_sads, n_tads, sad_interl;
1756 u32 reg;
1757 u64 limit, prv = 0;
1758 u64 tmp_mb;
1759 u32 gb, mb;
1760 u32 rir_way;
1761
1762 /*
1763 * Step 1) Get TOLM/TOHM ranges
1764 */
1765
1766 pvt->tolm = pvt->info.get_tolm(pvt);
1767 tmp_mb = (1 + pvt->tolm) >> 20;
1768
1769 gb = div_u64_rem(tmp_mb, 1024, &mb);
1770 edac_dbg(0, "TOLM: %u.%03u GB (0x%016Lx)\n",
1771 gb, (mb*1000)/1024, (u64)pvt->tolm);
1772
1773 /* Address range is already 45:25 */
1774 pvt->tohm = pvt->info.get_tohm(pvt);
1775 tmp_mb = (1 + pvt->tohm) >> 20;
1776
1777 gb = div_u64_rem(tmp_mb, 1024, &mb);
1778 edac_dbg(0, "TOHM: %u.%03u GB (0x%016Lx)\n",
1779 gb, (mb*1000)/1024, (u64)pvt->tohm);
1780
1781 /*
1782 * Step 2) Get SAD range and SAD Interleave list
1783 * TAD registers contain the interleave wayness. However, it
1784 * seems simpler to just discover it indirectly, with the
1785 * algorithm bellow.
1786 */
1787 prv = 0;
1788 for (n_sads = 0; n_sads < pvt->info.max_sad; n_sads++) {
1789 /* SAD_LIMIT Address range is 45:26 */
1790 pci_read_config_dword(pvt->pci_sad0, pvt->info.dram_rule[n_sads],
1791 &reg);
1792 limit = pvt->info.sad_limit(reg);
1793
1794 if (!DRAM_RULE_ENABLE(reg))
1795 continue;
1796
1797 if (limit <= prv)
1798 break;
1799
1800 tmp_mb = (limit + 1) >> 20;
1801 gb = div_u64_rem(tmp_mb, 1024, &mb);
1802 edac_dbg(0, "SAD#%d %s up to %u.%03u GB (0x%016Lx) Interleave: %s reg=0x%08x\n",
1803 n_sads,
1804 show_dram_attr(pvt->info.dram_attr(reg)),
1805 gb, (mb*1000)/1024,
1806 ((u64)tmp_mb) << 20L,
1807 get_intlv_mode_str(reg, pvt->info.type),
1808 reg);
1809 prv = limit;
1810
1811 pci_read_config_dword(pvt->pci_sad0, pvt->info.interleave_list[n_sads],
1812 &reg);
1813 sad_interl = sad_pkg(pvt->info.interleave_pkg, reg, 0);
1814 for (j = 0; j < 8; j++) {
1815 u32 pkg = sad_pkg(pvt->info.interleave_pkg, reg, j);
1816 if (j > 0 && sad_interl == pkg)
1817 break;
1818
1819 edac_dbg(0, "SAD#%d, interleave #%d: %d\n",
1820 n_sads, j, pkg);
1821 }
1822 }
1823
1824 if (pvt->info.type == KNIGHTS_LANDING)
1825 return;
1826
1827 /*
1828 * Step 3) Get TAD range
1829 */
1830 prv = 0;
1831 for (n_tads = 0; n_tads < MAX_TAD; n_tads++) {
1832 pci_read_config_dword(pvt->pci_ha, tad_dram_rule[n_tads], &reg);
1833 limit = TAD_LIMIT(reg);
1834 if (limit <= prv)
1835 break;
1836 tmp_mb = (limit + 1) >> 20;
1837
1838 gb = div_u64_rem(tmp_mb, 1024, &mb);
1839 edac_dbg(0, "TAD#%d: up to %u.%03u GB (0x%016Lx), socket interleave %d, memory interleave %d, TGT: %d, %d, %d, %d, reg=0x%08x\n",
1840 n_tads, gb, (mb*1000)/1024,
1841 ((u64)tmp_mb) << 20L,
1842 (u32)(1 << TAD_SOCK(reg)),
1843 (u32)TAD_CH(reg) + 1,
1844 (u32)TAD_TGT0(reg),
1845 (u32)TAD_TGT1(reg),
1846 (u32)TAD_TGT2(reg),
1847 (u32)TAD_TGT3(reg),
1848 reg);
1849 prv = limit;
1850 }
1851
1852 /*
1853 * Step 4) Get TAD offsets, per each channel
1854 */
1855 for (i = 0; i < NUM_CHANNELS; i++) {
1856 if (!pvt->channel[i].dimms)
1857 continue;
1858 for (j = 0; j < n_tads; j++) {
1859 pci_read_config_dword(pvt->pci_tad[i],
1860 tad_ch_nilv_offset[j],
1861 &reg);
1862 tmp_mb = TAD_OFFSET(reg) >> 20;
1863 gb = div_u64_rem(tmp_mb, 1024, &mb);
1864 edac_dbg(0, "TAD CH#%d, offset #%d: %u.%03u GB (0x%016Lx), reg=0x%08x\n",
1865 i, j,
1866 gb, (mb*1000)/1024,
1867 ((u64)tmp_mb) << 20L,
1868 reg);
1869 }
1870 }
1871
1872 /*
1873 * Step 6) Get RIR Wayness/Limit, per each channel
1874 */
1875 for (i = 0; i < NUM_CHANNELS; i++) {
1876 if (!pvt->channel[i].dimms)
1877 continue;
1878 for (j = 0; j < MAX_RIR_RANGES; j++) {
1879 pci_read_config_dword(pvt->pci_tad[i],
1880 rir_way_limit[j],
1881 &reg);
1882
1883 if (!IS_RIR_VALID(reg))
1884 continue;
1885
1886 tmp_mb = pvt->info.rir_limit(reg) >> 20;
1887 rir_way = 1 << RIR_WAY(reg);
1888 gb = div_u64_rem(tmp_mb, 1024, &mb);
1889 edac_dbg(0, "CH#%d RIR#%d, limit: %u.%03u GB (0x%016Lx), way: %d, reg=0x%08x\n",
1890 i, j,
1891 gb, (mb*1000)/1024,
1892 ((u64)tmp_mb) << 20L,
1893 rir_way,
1894 reg);
1895
1896 for (k = 0; k < rir_way; k++) {
1897 pci_read_config_dword(pvt->pci_tad[i],
1898 rir_offset[j][k],
1899 &reg);
1900 tmp_mb = RIR_OFFSET(pvt->info.type, reg) << 6;
1901
1902 gb = div_u64_rem(tmp_mb, 1024, &mb);
1903 edac_dbg(0, "CH#%d RIR#%d INTL#%d, offset %u.%03u GB (0x%016Lx), tgt: %d, reg=0x%08x\n",
1904 i, j, k,
1905 gb, (mb*1000)/1024,
1906 ((u64)tmp_mb) << 20L,
1907 (u32)RIR_RNK_TGT(pvt->info.type, reg),
1908 reg);
1909 }
1910 }
1911 }
1912 }
1913
1914 static struct mem_ctl_info *get_mci_for_node_id(u8 node_id, u8 ha)
1915 {
1916 struct sbridge_dev *sbridge_dev;
1917
1918 list_for_each_entry(sbridge_dev, &sbridge_edac_list, list) {
1919 if (sbridge_dev->node_id == node_id && sbridge_dev->dom == ha)
1920 return sbridge_dev->mci;
1921 }
1922 return NULL;
1923 }
1924
1925 static int get_memory_error_data(struct mem_ctl_info *mci,
1926 u64 addr,
1927 u8 *socket, u8 *ha,
1928 long *channel_mask,
1929 u8 *rank,
1930 char **area_type, char *msg)
1931 {
1932 struct mem_ctl_info *new_mci;
1933 struct sbridge_pvt *pvt = mci->pvt_info;
1934 struct pci_dev *pci_ha;
1935 int n_rir, n_sads, n_tads, sad_way, sck_xch;
1936 int sad_interl, idx, base_ch;
1937 int interleave_mode, shiftup = 0;
1938 unsigned int sad_interleave[MAX_INTERLEAVE];
1939 u32 reg, dram_rule;
1940 u8 ch_way, sck_way, pkg, sad_ha = 0;
1941 u32 tad_offset;
1942 u32 rir_way;
1943 u32 mb, gb;
1944 u64 ch_addr, offset, limit = 0, prv = 0;
1945
1946
1947 /*
1948 * Step 0) Check if the address is at special memory ranges
1949 * The check bellow is probably enough to fill all cases where
1950 * the error is not inside a memory, except for the legacy
1951 * range (e. g. VGA addresses). It is unlikely, however, that the
1952 * memory controller would generate an error on that range.
1953 */
1954 if ((addr > (u64) pvt->tolm) && (addr < (1LL << 32))) {
1955 sprintf(msg, "Error at TOLM area, on addr 0x%08Lx", addr);
1956 return -EINVAL;
1957 }
1958 if (addr >= (u64)pvt->tohm) {
1959 sprintf(msg, "Error at MMIOH area, on addr 0x%016Lx", addr);
1960 return -EINVAL;
1961 }
1962
1963 /*
1964 * Step 1) Get socket
1965 */
1966 for (n_sads = 0; n_sads < pvt->info.max_sad; n_sads++) {
1967 pci_read_config_dword(pvt->pci_sad0, pvt->info.dram_rule[n_sads],
1968 &reg);
1969
1970 if (!DRAM_RULE_ENABLE(reg))
1971 continue;
1972
1973 limit = pvt->info.sad_limit(reg);
1974 if (limit <= prv) {
1975 sprintf(msg, "Can't discover the memory socket");
1976 return -EINVAL;
1977 }
1978 if (addr <= limit)
1979 break;
1980 prv = limit;
1981 }
1982 if (n_sads == pvt->info.max_sad) {
1983 sprintf(msg, "Can't discover the memory socket");
1984 return -EINVAL;
1985 }
1986 dram_rule = reg;
1987 *area_type = show_dram_attr(pvt->info.dram_attr(dram_rule));
1988 interleave_mode = pvt->info.interleave_mode(dram_rule);
1989
1990 pci_read_config_dword(pvt->pci_sad0, pvt->info.interleave_list[n_sads],
1991 &reg);
1992
1993 if (pvt->info.type == SANDY_BRIDGE) {
1994 sad_interl = sad_pkg(pvt->info.interleave_pkg, reg, 0);
1995 for (sad_way = 0; sad_way < 8; sad_way++) {
1996 u32 pkg = sad_pkg(pvt->info.interleave_pkg, reg, sad_way);
1997 if (sad_way > 0 && sad_interl == pkg)
1998 break;
1999 sad_interleave[sad_way] = pkg;
2000 edac_dbg(0, "SAD interleave #%d: %d\n",
2001 sad_way, sad_interleave[sad_way]);
2002 }
2003 edac_dbg(0, "mc#%d: Error detected on SAD#%d: address 0x%016Lx < 0x%016Lx, Interleave [%d:6]%s\n",
2004 pvt->sbridge_dev->mc,
2005 n_sads,
2006 addr,
2007 limit,
2008 sad_way + 7,
2009 !interleave_mode ? "" : "XOR[18:16]");
2010 if (interleave_mode)
2011 idx = ((addr >> 6) ^ (addr >> 16)) & 7;
2012 else
2013 idx = (addr >> 6) & 7;
2014 switch (sad_way) {
2015 case 1:
2016 idx = 0;
2017 break;
2018 case 2:
2019 idx = idx & 1;
2020 break;
2021 case 4:
2022 idx = idx & 3;
2023 break;
2024 case 8:
2025 break;
2026 default:
2027 sprintf(msg, "Can't discover socket interleave");
2028 return -EINVAL;
2029 }
2030 *socket = sad_interleave[idx];
2031 edac_dbg(0, "SAD interleave index: %d (wayness %d) = CPU socket %d\n",
2032 idx, sad_way, *socket);
2033 } else if (pvt->info.type == HASWELL || pvt->info.type == BROADWELL) {
2034 int bits, a7mode = A7MODE(dram_rule);
2035
2036 if (a7mode) {
2037 /* A7 mode swaps P9 with P6 */
2038 bits = GET_BITFIELD(addr, 7, 8) << 1;
2039 bits |= GET_BITFIELD(addr, 9, 9);
2040 } else
2041 bits = GET_BITFIELD(addr, 6, 8);
2042
2043 if (interleave_mode == 0) {
2044 /* interleave mode will XOR {8,7,6} with {18,17,16} */
2045 idx = GET_BITFIELD(addr, 16, 18);
2046 idx ^= bits;
2047 } else
2048 idx = bits;
2049
2050 pkg = sad_pkg(pvt->info.interleave_pkg, reg, idx);
2051 *socket = sad_pkg_socket(pkg);
2052 sad_ha = sad_pkg_ha(pkg);
2053
2054 if (a7mode) {
2055 /* MCChanShiftUpEnable */
2056 pci_read_config_dword(pvt->pci_ha, HASWELL_HASYSDEFEATURE2, &reg);
2057 shiftup = GET_BITFIELD(reg, 22, 22);
2058 }
2059
2060 edac_dbg(0, "SAD interleave package: %d = CPU socket %d, HA %i, shiftup: %i\n",
2061 idx, *socket, sad_ha, shiftup);
2062 } else {
2063 /* Ivy Bridge's SAD mode doesn't support XOR interleave mode */
2064 idx = (addr >> 6) & 7;
2065 pkg = sad_pkg(pvt->info.interleave_pkg, reg, idx);
2066 *socket = sad_pkg_socket(pkg);
2067 sad_ha = sad_pkg_ha(pkg);
2068 edac_dbg(0, "SAD interleave package: %d = CPU socket %d, HA %d\n",
2069 idx, *socket, sad_ha);
2070 }
2071
2072 *ha = sad_ha;
2073
2074 /*
2075 * Move to the proper node structure, in order to access the
2076 * right PCI registers
2077 */
2078 new_mci = get_mci_for_node_id(*socket, sad_ha);
2079 if (!new_mci) {
2080 sprintf(msg, "Struct for socket #%u wasn't initialized",
2081 *socket);
2082 return -EINVAL;
2083 }
2084 mci = new_mci;
2085 pvt = mci->pvt_info;
2086
2087 /*
2088 * Step 2) Get memory channel
2089 */
2090 prv = 0;
2091 pci_ha = pvt->pci_ha;
2092 for (n_tads = 0; n_tads < MAX_TAD; n_tads++) {
2093 pci_read_config_dword(pci_ha, tad_dram_rule[n_tads], &reg);
2094 limit = TAD_LIMIT(reg);
2095 if (limit <= prv) {
2096 sprintf(msg, "Can't discover the memory channel");
2097 return -EINVAL;
2098 }
2099 if (addr <= limit)
2100 break;
2101 prv = limit;
2102 }
2103 if (n_tads == MAX_TAD) {
2104 sprintf(msg, "Can't discover the memory channel");
2105 return -EINVAL;
2106 }
2107
2108 ch_way = TAD_CH(reg) + 1;
2109 sck_way = TAD_SOCK(reg);
2110
2111 if (ch_way == 3)
2112 idx = addr >> 6;
2113 else {
2114 idx = (addr >> (6 + sck_way + shiftup)) & 0x3;
2115 if (pvt->is_chan_hash)
2116 idx = haswell_chan_hash(idx, addr);
2117 }
2118 idx = idx % ch_way;
2119
2120 /*
2121 * FIXME: Shouldn't we use CHN_IDX_OFFSET() here, when ch_way == 3 ???
2122 */
2123 switch (idx) {
2124 case 0:
2125 base_ch = TAD_TGT0(reg);
2126 break;
2127 case 1:
2128 base_ch = TAD_TGT1(reg);
2129 break;
2130 case 2:
2131 base_ch = TAD_TGT2(reg);
2132 break;
2133 case 3:
2134 base_ch = TAD_TGT3(reg);
2135 break;
2136 default:
2137 sprintf(msg, "Can't discover the TAD target");
2138 return -EINVAL;
2139 }
2140 *channel_mask = 1 << base_ch;
2141
2142 pci_read_config_dword(pvt->pci_tad[base_ch], tad_ch_nilv_offset[n_tads], &tad_offset);
2143
2144 if (pvt->mirror_mode == FULL_MIRRORING ||
2145 (pvt->mirror_mode == ADDR_RANGE_MIRRORING && n_tads == 0)) {
2146 *channel_mask |= 1 << ((base_ch + 2) % 4);
2147 switch(ch_way) {
2148 case 2:
2149 case 4:
2150 sck_xch = (1 << sck_way) * (ch_way >> 1);
2151 break;
2152 default:
2153 sprintf(msg, "Invalid mirror set. Can't decode addr");
2154 return -EINVAL;
2155 }
2156
2157 pvt->is_cur_addr_mirrored = true;
2158 } else {
2159 sck_xch = (1 << sck_way) * ch_way;
2160 pvt->is_cur_addr_mirrored = false;
2161 }
2162
2163 if (pvt->is_lockstep)
2164 *channel_mask |= 1 << ((base_ch + 1) % 4);
2165
2166 offset = TAD_OFFSET(tad_offset);
2167
2168 edac_dbg(0, "TAD#%d: address 0x%016Lx < 0x%016Lx, socket interleave %d, channel interleave %d (offset 0x%08Lx), index %d, base ch: %d, ch mask: 0x%02lx\n",
2169 n_tads,
2170 addr,
2171 limit,
2172 sck_way,
2173 ch_way,
2174 offset,
2175 idx,
2176 base_ch,
2177 *channel_mask);
2178
2179 /* Calculate channel address */
2180 /* Remove the TAD offset */
2181
2182 if (offset > addr) {
2183 sprintf(msg, "Can't calculate ch addr: TAD offset 0x%08Lx is too high for addr 0x%08Lx!",
2184 offset, addr);
2185 return -EINVAL;
2186 }
2187
2188 ch_addr = addr - offset;
2189 ch_addr >>= (6 + shiftup);
2190 ch_addr /= sck_xch;
2191 ch_addr <<= (6 + shiftup);
2192 ch_addr |= addr & ((1 << (6 + shiftup)) - 1);
2193
2194 /*
2195 * Step 3) Decode rank
2196 */
2197 for (n_rir = 0; n_rir < MAX_RIR_RANGES; n_rir++) {
2198 pci_read_config_dword(pvt->pci_tad[base_ch], rir_way_limit[n_rir], &reg);
2199
2200 if (!IS_RIR_VALID(reg))
2201 continue;
2202
2203 limit = pvt->info.rir_limit(reg);
2204 gb = div_u64_rem(limit >> 20, 1024, &mb);
2205 edac_dbg(0, "RIR#%d, limit: %u.%03u GB (0x%016Lx), way: %d\n",
2206 n_rir,
2207 gb, (mb*1000)/1024,
2208 limit,
2209 1 << RIR_WAY(reg));
2210 if (ch_addr <= limit)
2211 break;
2212 }
2213 if (n_rir == MAX_RIR_RANGES) {
2214 sprintf(msg, "Can't discover the memory rank for ch addr 0x%08Lx",
2215 ch_addr);
2216 return -EINVAL;
2217 }
2218 rir_way = RIR_WAY(reg);
2219
2220 if (pvt->is_close_pg)
2221 idx = (ch_addr >> 6);
2222 else
2223 idx = (ch_addr >> 13); /* FIXME: Datasheet says to shift by 15 */
2224 idx %= 1 << rir_way;
2225
2226 pci_read_config_dword(pvt->pci_tad[base_ch], rir_offset[n_rir][idx], &reg);
2227 *rank = RIR_RNK_TGT(pvt->info.type, reg);
2228
2229 edac_dbg(0, "RIR#%d: channel address 0x%08Lx < 0x%08Lx, RIR interleave %d, index %d\n",
2230 n_rir,
2231 ch_addr,
2232 limit,
2233 rir_way,
2234 idx);
2235
2236 return 0;
2237 }
2238
2239 static int get_memory_error_data_from_mce(struct mem_ctl_info *mci,
2240 const struct mce *m, u8 *socket,
2241 u8 *ha, long *channel_mask,
2242 char *msg)
2243 {
2244 u32 reg, channel = GET_BITFIELD(m->status, 0, 3);
2245 struct mem_ctl_info *new_mci;
2246 struct sbridge_pvt *pvt;
2247 struct pci_dev *pci_ha;
2248 bool tad0;
2249
2250 if (channel >= NUM_CHANNELS) {
2251 sprintf(msg, "Invalid channel 0x%x", channel);
2252 return -EINVAL;
2253 }
2254
2255 pvt = mci->pvt_info;
2256 if (!pvt->info.get_ha) {
2257 sprintf(msg, "No get_ha()");
2258 return -EINVAL;
2259 }
2260 *ha = pvt->info.get_ha(m->bank);
2261 if (*ha != 0 && *ha != 1) {
2262 sprintf(msg, "Impossible bank %d", m->bank);
2263 return -EINVAL;
2264 }
2265
2266 *socket = m->socketid;
2267 new_mci = get_mci_for_node_id(*socket, *ha);
2268 if (!new_mci) {
2269 strcpy(msg, "mci socket got corrupted!");
2270 return -EINVAL;
2271 }
2272
2273 pvt = new_mci->pvt_info;
2274 pci_ha = pvt->pci_ha;
2275 pci_read_config_dword(pci_ha, tad_dram_rule[0], &reg);
2276 tad0 = m->addr <= TAD_LIMIT(reg);
2277
2278 *channel_mask = 1 << channel;
2279 if (pvt->mirror_mode == FULL_MIRRORING ||
2280 (pvt->mirror_mode == ADDR_RANGE_MIRRORING && tad0)) {
2281 *channel_mask |= 1 << ((channel + 2) % 4);
2282 pvt->is_cur_addr_mirrored = true;
2283 } else {
2284 pvt->is_cur_addr_mirrored = false;
2285 }
2286
2287 if (pvt->is_lockstep)
2288 *channel_mask |= 1 << ((channel + 1) % 4);
2289
2290 return 0;
2291 }
2292
2293 /****************************************************************************
2294 Device initialization routines: put/get, init/exit
2295 ****************************************************************************/
2296
2297 /*
2298 * sbridge_put_all_devices 'put' all the devices that we have
2299 * reserved via 'get'
2300 */
2301 static void sbridge_put_devices(struct sbridge_dev *sbridge_dev)
2302 {
2303 int i;
2304
2305 edac_dbg(0, "\n");
2306 for (i = 0; i < sbridge_dev->n_devs; i++) {
2307 struct pci_dev *pdev = sbridge_dev->pdev[i];
2308 if (!pdev)
2309 continue;
2310 edac_dbg(0, "Removing dev %02x:%02x.%d\n",
2311 pdev->bus->number,
2312 PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
2313 pci_dev_put(pdev);
2314 }
2315 }
2316
2317 static void sbridge_put_all_devices(void)
2318 {
2319 struct sbridge_dev *sbridge_dev, *tmp;
2320
2321 list_for_each_entry_safe(sbridge_dev, tmp, &sbridge_edac_list, list) {
2322 sbridge_put_devices(sbridge_dev);
2323 free_sbridge_dev(sbridge_dev);
2324 }
2325 }
2326
2327 static int sbridge_get_onedevice(struct pci_dev **prev,
2328 u8 *num_mc,
2329 const struct pci_id_table *table,
2330 const unsigned devno,
2331 const int multi_bus)
2332 {
2333 struct sbridge_dev *sbridge_dev = NULL;
2334 const struct pci_id_descr *dev_descr = &table->descr[devno];
2335 struct pci_dev *pdev = NULL;
2336 int seg = 0;
2337 u8 bus = 0;
2338 int i = 0;
2339
2340 sbridge_printk(KERN_DEBUG,
2341 "Seeking for: PCI ID %04x:%04x\n",
2342 PCI_VENDOR_ID_INTEL, dev_descr->dev_id);
2343
2344 pdev = pci_get_device(PCI_VENDOR_ID_INTEL,
2345 dev_descr->dev_id, *prev);
2346
2347 if (!pdev) {
2348 if (*prev) {
2349 *prev = pdev;
2350 return 0;
2351 }
2352
2353 if (dev_descr->optional)
2354 return 0;
2355
2356 /* if the HA wasn't found */
2357 if (devno == 0)
2358 return -ENODEV;
2359
2360 sbridge_printk(KERN_INFO,
2361 "Device not found: %04x:%04x\n",
2362 PCI_VENDOR_ID_INTEL, dev_descr->dev_id);
2363
2364 /* End of list, leave */
2365 return -ENODEV;
2366 }
2367 seg = pci_domain_nr(pdev->bus);
2368 bus = pdev->bus->number;
2369
2370 next_imc:
2371 sbridge_dev = get_sbridge_dev(seg, bus, dev_descr->dom,
2372 multi_bus, sbridge_dev);
2373 if (!sbridge_dev) {
2374 /* If the HA1 wasn't found, don't create EDAC second memory controller */
2375 if (dev_descr->dom == IMC1 && devno != 1) {
2376 edac_dbg(0, "Skip IMC1: %04x:%04x (since HA1 was absent)\n",
2377 PCI_VENDOR_ID_INTEL, dev_descr->dev_id);
2378 pci_dev_put(pdev);
2379 return 0;
2380 }
2381
2382 if (dev_descr->dom == SOCK)
2383 goto out_imc;
2384
2385 sbridge_dev = alloc_sbridge_dev(seg, bus, dev_descr->dom, table);
2386 if (!sbridge_dev) {
2387 pci_dev_put(pdev);
2388 return -ENOMEM;
2389 }
2390 (*num_mc)++;
2391 }
2392
2393 if (sbridge_dev->pdev[sbridge_dev->i_devs]) {
2394 sbridge_printk(KERN_ERR,
2395 "Duplicated device for %04x:%04x\n",
2396 PCI_VENDOR_ID_INTEL, dev_descr->dev_id);
2397 pci_dev_put(pdev);
2398 return -ENODEV;
2399 }
2400
2401 sbridge_dev->pdev[sbridge_dev->i_devs++] = pdev;
2402
2403 /* pdev belongs to more than one IMC, do extra gets */
2404 if (++i > 1)
2405 pci_dev_get(pdev);
2406
2407 if (dev_descr->dom == SOCK && i < table->n_imcs_per_sock)
2408 goto next_imc;
2409
2410 out_imc:
2411 /* Be sure that the device is enabled */
2412 if (unlikely(pci_enable_device(pdev) < 0)) {
2413 sbridge_printk(KERN_ERR,
2414 "Couldn't enable %04x:%04x\n",
2415 PCI_VENDOR_ID_INTEL, dev_descr->dev_id);
2416 return -ENODEV;
2417 }
2418
2419 edac_dbg(0, "Detected %04x:%04x\n",
2420 PCI_VENDOR_ID_INTEL, dev_descr->dev_id);
2421
2422 /*
2423 * As stated on drivers/pci/search.c, the reference count for
2424 * @from is always decremented if it is not %NULL. So, as we need
2425 * to get all devices up to null, we need to do a get for the device
2426 */
2427 pci_dev_get(pdev);
2428
2429 *prev = pdev;
2430
2431 return 0;
2432 }
2433
2434 /*
2435 * sbridge_get_all_devices - Find and perform 'get' operation on the MCH's
2436 * devices we want to reference for this driver.
2437 * @num_mc: pointer to the memory controllers count, to be incremented in case
2438 * of success.
2439 * @table: model specific table
2440 *
2441 * returns 0 in case of success or error code
2442 */
2443 static int sbridge_get_all_devices(u8 *num_mc,
2444 const struct pci_id_table *table)
2445 {
2446 int i, rc;
2447 struct pci_dev *pdev = NULL;
2448 int allow_dups = 0;
2449 int multi_bus = 0;
2450
2451 if (table->type == KNIGHTS_LANDING)
2452 allow_dups = multi_bus = 1;
2453 while (table && table->descr) {
2454 for (i = 0; i < table->n_devs_per_sock; i++) {
2455 if (!allow_dups || i == 0 ||
2456 table->descr[i].dev_id !=
2457 table->descr[i-1].dev_id) {
2458 pdev = NULL;
2459 }
2460 do {
2461 rc = sbridge_get_onedevice(&pdev, num_mc,
2462 table, i, multi_bus);
2463 if (rc < 0) {
2464 if (i == 0) {
2465 i = table->n_devs_per_sock;
2466 break;
2467 }
2468 sbridge_put_all_devices();
2469 return -ENODEV;
2470 }
2471 } while (pdev && !allow_dups);
2472 }
2473 table++;
2474 }
2475
2476 return 0;
2477 }
2478
2479 /*
2480 * Device IDs for {SBRIDGE,IBRIDGE,HASWELL,BROADWELL}_IMC_HA0_TAD0 are in
2481 * the format: XXXa. So we can convert from a device to the corresponding
2482 * channel like this
2483 */
2484 #define TAD_DEV_TO_CHAN(dev) (((dev) & 0xf) - 0xa)
2485
2486 static int sbridge_mci_bind_devs(struct mem_ctl_info *mci,
2487 struct sbridge_dev *sbridge_dev)
2488 {
2489 struct sbridge_pvt *pvt = mci->pvt_info;
2490 struct pci_dev *pdev;
2491 u8 saw_chan_mask = 0;
2492 int i;
2493
2494 for (i = 0; i < sbridge_dev->n_devs; i++) {
2495 pdev = sbridge_dev->pdev[i];
2496 if (!pdev)
2497 continue;
2498
2499 switch (pdev->device) {
2500 case PCI_DEVICE_ID_INTEL_SBRIDGE_SAD0:
2501 pvt->pci_sad0 = pdev;
2502 break;
2503 case PCI_DEVICE_ID_INTEL_SBRIDGE_SAD1:
2504 pvt->pci_sad1 = pdev;
2505 break;
2506 case PCI_DEVICE_ID_INTEL_SBRIDGE_BR:
2507 pvt->pci_br0 = pdev;
2508 break;
2509 case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_HA0:
2510 pvt->pci_ha = pdev;
2511 break;
2512 case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TA:
2513 pvt->pci_ta = pdev;
2514 break;
2515 case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_RAS:
2516 pvt->pci_ras = pdev;
2517 break;
2518 case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD0:
2519 case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD1:
2520 case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD2:
2521 case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_TAD3:
2522 {
2523 int id = TAD_DEV_TO_CHAN(pdev->device);
2524 pvt->pci_tad[id] = pdev;
2525 saw_chan_mask |= 1 << id;
2526 }
2527 break;
2528 case PCI_DEVICE_ID_INTEL_SBRIDGE_IMC_DDRIO:
2529 pvt->pci_ddrio = pdev;
2530 break;
2531 default:
2532 goto error;
2533 }
2534
2535 edac_dbg(0, "Associated PCI %02x:%02x, bus %d with dev = %p\n",
2536 pdev->vendor, pdev->device,
2537 sbridge_dev->bus,
2538 pdev);
2539 }
2540
2541 /* Check if everything were registered */
2542 if (!pvt->pci_sad0 || !pvt->pci_sad1 || !pvt->pci_ha ||
2543 !pvt->pci_ras || !pvt->pci_ta)
2544 goto enodev;
2545
2546 if (saw_chan_mask != 0x0f)
2547 goto enodev;
2548 return 0;
2549
2550 enodev:
2551 sbridge_printk(KERN_ERR, "Some needed devices are missing\n");
2552 return -ENODEV;
2553
2554 error:
2555 sbridge_printk(KERN_ERR, "Unexpected device %02x:%02x\n",
2556 PCI_VENDOR_ID_INTEL, pdev->device);
2557 return -EINVAL;
2558 }
2559
2560 static int ibridge_mci_bind_devs(struct mem_ctl_info *mci,
2561 struct sbridge_dev *sbridge_dev)
2562 {
2563 struct sbridge_pvt *pvt = mci->pvt_info;
2564 struct pci_dev *pdev;
2565 u8 saw_chan_mask = 0;
2566 int i;
2567
2568 for (i = 0; i < sbridge_dev->n_devs; i++) {
2569 pdev = sbridge_dev->pdev[i];
2570 if (!pdev)
2571 continue;
2572
2573 switch (pdev->device) {
2574 case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0:
2575 case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1:
2576 pvt->pci_ha = pdev;
2577 break;
2578 case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TA:
2579 case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TA:
2580 pvt->pci_ta = pdev;
2581 break;
2582 case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_RAS:
2583 case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_RAS:
2584 pvt->pci_ras = pdev;
2585 break;
2586 case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD0:
2587 case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD1:
2588 case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD2:
2589 case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA0_TAD3:
2590 case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD0:
2591 case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD1:
2592 case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD2:
2593 case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_HA1_TAD3:
2594 {
2595 int id = TAD_DEV_TO_CHAN(pdev->device);
2596 pvt->pci_tad[id] = pdev;
2597 saw_chan_mask |= 1 << id;
2598 }
2599 break;
2600 case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_2HA_DDRIO0:
2601 pvt->pci_ddrio = pdev;
2602 break;
2603 case PCI_DEVICE_ID_INTEL_IBRIDGE_IMC_1HA_DDRIO0:
2604 pvt->pci_ddrio = pdev;
2605 break;
2606 case PCI_DEVICE_ID_INTEL_IBRIDGE_SAD:
2607 pvt->pci_sad0 = pdev;
2608 break;
2609 case PCI_DEVICE_ID_INTEL_IBRIDGE_BR0:
2610 pvt->pci_br0 = pdev;
2611 break;
2612 case PCI_DEVICE_ID_INTEL_IBRIDGE_BR1:
2613 pvt->pci_br1 = pdev;
2614 break;
2615 default:
2616 goto error;
2617 }
2618
2619 edac_dbg(0, "Associated PCI %02x.%02d.%d with dev = %p\n",
2620 sbridge_dev->bus,
2621 PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
2622 pdev);
2623 }
2624
2625 /* Check if everything were registered */
2626 if (!pvt->pci_sad0 || !pvt->pci_ha || !pvt->pci_br0 ||
2627 !pvt->pci_br1 || !pvt->pci_ras || !pvt->pci_ta)
2628 goto enodev;
2629
2630 if (saw_chan_mask != 0x0f && /* -EN/-EX */
2631 saw_chan_mask != 0x03) /* -EP */
2632 goto enodev;
2633 return 0;
2634
2635 enodev:
2636 sbridge_printk(KERN_ERR, "Some needed devices are missing\n");
2637 return -ENODEV;
2638
2639 error:
2640 sbridge_printk(KERN_ERR,
2641 "Unexpected device %02x:%02x\n", PCI_VENDOR_ID_INTEL,
2642 pdev->device);
2643 return -EINVAL;
2644 }
2645
2646 static int haswell_mci_bind_devs(struct mem_ctl_info *mci,
2647 struct sbridge_dev *sbridge_dev)
2648 {
2649 struct sbridge_pvt *pvt = mci->pvt_info;
2650 struct pci_dev *pdev;
2651 u8 saw_chan_mask = 0;
2652 int i;
2653
2654 /* there's only one device per system; not tied to any bus */
2655 if (pvt->info.pci_vtd == NULL)
2656 /* result will be checked later */
2657 pvt->info.pci_vtd = pci_get_device(PCI_VENDOR_ID_INTEL,
2658 PCI_DEVICE_ID_INTEL_HASWELL_IMC_VTD_MISC,
2659 NULL);
2660
2661 for (i = 0; i < sbridge_dev->n_devs; i++) {
2662 pdev = sbridge_dev->pdev[i];
2663 if (!pdev)
2664 continue;
2665
2666 switch (pdev->device) {
2667 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_CBO_SAD0:
2668 pvt->pci_sad0 = pdev;
2669 break;
2670 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_CBO_SAD1:
2671 pvt->pci_sad1 = pdev;
2672 break;
2673 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0:
2674 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1:
2675 pvt->pci_ha = pdev;
2676 break;
2677 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TA:
2678 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TA:
2679 pvt->pci_ta = pdev;
2680 break;
2681 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TM:
2682 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TM:
2683 pvt->pci_ras = pdev;
2684 break;
2685 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD0:
2686 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD1:
2687 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD2:
2688 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA0_TAD3:
2689 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD0:
2690 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD1:
2691 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD2:
2692 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_HA1_TAD3:
2693 {
2694 int id = TAD_DEV_TO_CHAN(pdev->device);
2695 pvt->pci_tad[id] = pdev;
2696 saw_chan_mask |= 1 << id;
2697 }
2698 break;
2699 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO0:
2700 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO1:
2701 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO2:
2702 case PCI_DEVICE_ID_INTEL_HASWELL_IMC_DDRIO3:
2703 if (!pvt->pci_ddrio)
2704 pvt->pci_ddrio = pdev;
2705 break;
2706 default:
2707 break;
2708 }
2709
2710 edac_dbg(0, "Associated PCI %02x.%02d.%d with dev = %p\n",
2711 sbridge_dev->bus,
2712 PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
2713 pdev);
2714 }
2715
2716 /* Check if everything were registered */
2717 if (!pvt->pci_sad0 || !pvt->pci_ha || !pvt->pci_sad1 ||
2718 !pvt->pci_ras || !pvt->pci_ta || !pvt->info.pci_vtd)
2719 goto enodev;
2720
2721 if (saw_chan_mask != 0x0f && /* -EN/-EX */
2722 saw_chan_mask != 0x03) /* -EP */
2723 goto enodev;
2724 return 0;
2725
2726 enodev:
2727 sbridge_printk(KERN_ERR, "Some needed devices are missing\n");
2728 return -ENODEV;
2729 }
2730
2731 static int broadwell_mci_bind_devs(struct mem_ctl_info *mci,
2732 struct sbridge_dev *sbridge_dev)
2733 {
2734 struct sbridge_pvt *pvt = mci->pvt_info;
2735 struct pci_dev *pdev;
2736 u8 saw_chan_mask = 0;
2737 int i;
2738
2739 /* there's only one device per system; not tied to any bus */
2740 if (pvt->info.pci_vtd == NULL)
2741 /* result will be checked later */
2742 pvt->info.pci_vtd = pci_get_device(PCI_VENDOR_ID_INTEL,
2743 PCI_DEVICE_ID_INTEL_BROADWELL_IMC_VTD_MISC,
2744 NULL);
2745
2746 for (i = 0; i < sbridge_dev->n_devs; i++) {
2747 pdev = sbridge_dev->pdev[i];
2748 if (!pdev)
2749 continue;
2750
2751 switch (pdev->device) {
2752 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD0:
2753 pvt->pci_sad0 = pdev;
2754 break;
2755 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_CBO_SAD1:
2756 pvt->pci_sad1 = pdev;
2757 break;
2758 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0:
2759 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1:
2760 pvt->pci_ha = pdev;
2761 break;
2762 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TA:
2763 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TA:
2764 pvt->pci_ta = pdev;
2765 break;
2766 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TM:
2767 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TM:
2768 pvt->pci_ras = pdev;
2769 break;
2770 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD0:
2771 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD1:
2772 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD2:
2773 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA0_TAD3:
2774 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD0:
2775 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD1:
2776 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD2:
2777 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_HA1_TAD3:
2778 {
2779 int id = TAD_DEV_TO_CHAN(pdev->device);
2780 pvt->pci_tad[id] = pdev;
2781 saw_chan_mask |= 1 << id;
2782 }
2783 break;
2784 case PCI_DEVICE_ID_INTEL_BROADWELL_IMC_DDRIO0:
2785 pvt->pci_ddrio = pdev;
2786 break;
2787 default:
2788 break;
2789 }
2790
2791 edac_dbg(0, "Associated PCI %02x.%02d.%d with dev = %p\n",
2792 sbridge_dev->bus,
2793 PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn),
2794 pdev);
2795 }
2796
2797 /* Check if everything were registered */
2798 if (!pvt->pci_sad0 || !pvt->pci_ha || !pvt->pci_sad1 ||
2799 !pvt->pci_ras || !pvt->pci_ta || !pvt->info.pci_vtd)
2800 goto enodev;
2801
2802 if (saw_chan_mask != 0x0f && /* -EN/-EX */
2803 saw_chan_mask != 0x03) /* -EP */
2804 goto enodev;
2805 return 0;
2806
2807 enodev:
2808 sbridge_printk(KERN_ERR, "Some needed devices are missing\n");
2809 return -ENODEV;
2810 }
2811
2812 static int knl_mci_bind_devs(struct mem_ctl_info *mci,
2813 struct sbridge_dev *sbridge_dev)
2814 {
2815 struct sbridge_pvt *pvt = mci->pvt_info;
2816 struct pci_dev *pdev;
2817 int dev, func;
2818
2819 int i;
2820 int devidx;
2821
2822 for (i = 0; i < sbridge_dev->n_devs; i++) {
2823 pdev = sbridge_dev->pdev[i];
2824 if (!pdev)
2825 continue;
2826
2827 /* Extract PCI device and function. */
2828 dev = (pdev->devfn >> 3) & 0x1f;
2829 func = pdev->devfn & 0x7;
2830
2831 switch (pdev->device) {
2832 case PCI_DEVICE_ID_INTEL_KNL_IMC_MC:
2833 if (dev == 8)
2834 pvt->knl.pci_mc0 = pdev;
2835 else if (dev == 9)
2836 pvt->knl.pci_mc1 = pdev;
2837 else {
2838 sbridge_printk(KERN_ERR,
2839 "Memory controller in unexpected place! (dev %d, fn %d)\n",
2840 dev, func);
2841 continue;
2842 }
2843 break;
2844
2845 case PCI_DEVICE_ID_INTEL_KNL_IMC_SAD0:
2846 pvt->pci_sad0 = pdev;
2847 break;
2848
2849 case PCI_DEVICE_ID_INTEL_KNL_IMC_SAD1:
2850 pvt->pci_sad1 = pdev;
2851 break;
2852
2853 case PCI_DEVICE_ID_INTEL_KNL_IMC_CHA:
2854 /* There are one of these per tile, and range from
2855 * 1.14.0 to 1.18.5.
2856 */
2857 devidx = ((dev-14)*8)+func;
2858
2859 if (devidx < 0 || devidx >= KNL_MAX_CHAS) {
2860 sbridge_printk(KERN_ERR,
2861 "Caching and Home Agent in unexpected place! (dev %d, fn %d)\n",
2862 dev, func);
2863 continue;
2864 }
2865
2866 WARN_ON(pvt->knl.pci_cha[devidx] != NULL);
2867
2868 pvt->knl.pci_cha[devidx] = pdev;
2869 break;
2870
2871 case PCI_DEVICE_ID_INTEL_KNL_IMC_CHAN:
2872 devidx = -1;
2873
2874 /*
2875 * MC0 channels 0-2 are device 9 function 2-4,
2876 * MC1 channels 3-5 are device 8 function 2-4.
2877 */
2878
2879 if (dev == 9)
2880 devidx = func-2;
2881 else if (dev == 8)
2882 devidx = 3 + (func-2);
2883
2884 if (devidx < 0 || devidx >= KNL_MAX_CHANNELS) {
2885 sbridge_printk(KERN_ERR,
2886 "DRAM Channel Registers in unexpected place! (dev %d, fn %d)\n",
2887 dev, func);
2888 continue;
2889 }
2890
2891 WARN_ON(pvt->knl.pci_channel[devidx] != NULL);
2892 pvt->knl.pci_channel[devidx] = pdev;
2893 break;
2894
2895 case PCI_DEVICE_ID_INTEL_KNL_IMC_TOLHM:
2896 pvt->knl.pci_mc_info = pdev;
2897 break;
2898
2899 case PCI_DEVICE_ID_INTEL_KNL_IMC_TA:
2900 pvt->pci_ta = pdev;
2901 break;
2902
2903 default:
2904 sbridge_printk(KERN_ERR, "Unexpected device %d\n",
2905 pdev->device);
2906 break;
2907 }
2908 }
2909
2910 if (!pvt->knl.pci_mc0 || !pvt->knl.pci_mc1 ||
2911 !pvt->pci_sad0 || !pvt->pci_sad1 ||
2912 !pvt->pci_ta) {
2913 goto enodev;
2914 }
2915
2916 for (i = 0; i < KNL_MAX_CHANNELS; i++) {
2917 if (!pvt->knl.pci_channel[i]) {
2918 sbridge_printk(KERN_ERR, "Missing channel %d\n", i);
2919 goto enodev;
2920 }
2921 }
2922
2923 for (i = 0; i < KNL_MAX_CHAS; i++) {
2924 if (!pvt->knl.pci_cha[i]) {
2925 sbridge_printk(KERN_ERR, "Missing CHA %d\n", i);
2926 goto enodev;
2927 }
2928 }
2929
2930 return 0;
2931
2932 enodev:
2933 sbridge_printk(KERN_ERR, "Some needed devices are missing\n");
2934 return -ENODEV;
2935 }
2936
2937 /****************************************************************************
2938 Error check routines
2939 ****************************************************************************/
2940
2941 /*
2942 * While Sandy Bridge has error count registers, SMI BIOS read values from
2943 * and resets the counters. So, they are not reliable for the OS to read
2944 * from them. So, we have no option but to just trust on whatever MCE is
2945 * telling us about the errors.
2946 */
2947 static void sbridge_mce_output_error(struct mem_ctl_info *mci,
2948 const struct mce *m)
2949 {
2950 struct mem_ctl_info *new_mci;
2951 struct sbridge_pvt *pvt = mci->pvt_info;
2952 enum hw_event_mc_err_type tp_event;
2953 char *optype, msg[256];
2954 bool ripv = GET_BITFIELD(m->mcgstatus, 0, 0);
2955 bool overflow = GET_BITFIELD(m->status, 62, 62);
2956 bool uncorrected_error = GET_BITFIELD(m->status, 61, 61);
2957 bool recoverable;
2958 u32 core_err_cnt = GET_BITFIELD(m->status, 38, 52);
2959 u32 mscod = GET_BITFIELD(m->status, 16, 31);
2960 u32 errcode = GET_BITFIELD(m->status, 0, 15);
2961 u32 channel = GET_BITFIELD(m->status, 0, 3);
2962 u32 optypenum = GET_BITFIELD(m->status, 4, 6);
2963 /*
2964 * Bits 5-0 of MCi_MISC give the least significant bit that is valid.
2965 * A value 6 is for cache line aligned address, a value 12 is for page
2966 * aligned address reported by patrol scrubber.
2967 */
2968 u32 lsb = GET_BITFIELD(m->misc, 0, 5);
2969 long channel_mask, first_channel;
2970 u8 rank = 0xff, socket, ha;
2971 int rc, dimm;
2972 char *area_type = "DRAM";
2973
2974 if (pvt->info.type != SANDY_BRIDGE)
2975 recoverable = true;
2976 else
2977 recoverable = GET_BITFIELD(m->status, 56, 56);
2978
2979 if (uncorrected_error) {
2980 core_err_cnt = 1;
2981 if (ripv) {
2982 tp_event = HW_EVENT_ERR_UNCORRECTED;
2983 } else {
2984 tp_event = HW_EVENT_ERR_FATAL;
2985 }
2986 } else {
2987 tp_event = HW_EVENT_ERR_CORRECTED;
2988 }
2989
2990 /*
2991 * According with Table 15-9 of the Intel Architecture spec vol 3A,
2992 * memory errors should fit in this mask:
2993 * 000f 0000 1mmm cccc (binary)
2994 * where:
2995 * f = Correction Report Filtering Bit. If 1, subsequent errors
2996 * won't be shown
2997 * mmm = error type
2998 * cccc = channel
2999 * If the mask doesn't match, report an error to the parsing logic
3000 */
3001 switch (optypenum) {
3002 case 0:
3003 optype = "generic undef request error";
3004 break;
3005 case 1:
3006 optype = "memory read error";
3007 break;
3008 case 2:
3009 optype = "memory write error";
3010 break;
3011 case 3:
3012 optype = "addr/cmd error";
3013 break;
3014 case 4:
3015 optype = "memory scrubbing error";
3016 break;
3017 default:
3018 optype = "reserved";
3019 break;
3020 }
3021
3022 if (pvt->info.type == KNIGHTS_LANDING) {
3023 if (channel == 14) {
3024 edac_dbg(0, "%s%s err_code:%04x:%04x EDRAM bank %d\n",
3025 overflow ? " OVERFLOW" : "",
3026 (uncorrected_error && recoverable)
3027 ? " recoverable" : "",
3028 mscod, errcode,
3029 m->bank);
3030 } else {
3031 char A = *("A");
3032
3033 /*
3034 * Reported channel is in range 0-2, so we can't map it
3035 * back to mc. To figure out mc we check machine check
3036 * bank register that reported this error.
3037 * bank15 means mc0 and bank16 means mc1.
3038 */
3039 channel = knl_channel_remap(m->bank == 16, channel);
3040 channel_mask = 1 << channel;
3041
3042 snprintf(msg, sizeof(msg),
3043 "%s%s err_code:%04x:%04x channel:%d (DIMM_%c)",
3044 overflow ? " OVERFLOW" : "",
3045 (uncorrected_error && recoverable)
3046 ? " recoverable" : " ",
3047 mscod, errcode, channel, A + channel);
3048 edac_mc_handle_error(tp_event, mci, core_err_cnt,
3049 m->addr >> PAGE_SHIFT, m->addr & ~PAGE_MASK, 0,
3050 channel, 0, -1,
3051 optype, msg);
3052 }
3053 return;
3054 } else if (lsb < 12) {
3055 rc = get_memory_error_data(mci, m->addr, &socket, &ha,
3056 &channel_mask, &rank,
3057 &area_type, msg);
3058 } else {
3059 rc = get_memory_error_data_from_mce(mci, m, &socket, &ha,
3060 &channel_mask, msg);
3061 }
3062
3063 if (rc < 0)
3064 goto err_parsing;
3065 new_mci = get_mci_for_node_id(socket, ha);
3066 if (!new_mci) {
3067 strcpy(msg, "Error: socket got corrupted!");
3068 goto err_parsing;
3069 }
3070 mci = new_mci;
3071 pvt = mci->pvt_info;
3072
3073 first_channel = find_first_bit(&channel_mask, NUM_CHANNELS);
3074
3075 if (rank == 0xff)
3076 dimm = -1;
3077 else if (rank < 4)
3078 dimm = 0;
3079 else if (rank < 8)
3080 dimm = 1;
3081 else
3082 dimm = 2;
3083
3084 /*
3085 * FIXME: On some memory configurations (mirror, lockstep), the
3086 * Memory Controller can't point the error to a single DIMM. The
3087 * EDAC core should be handling the channel mask, in order to point
3088 * to the group of dimm's where the error may be happening.
3089 */
3090 if (!pvt->is_lockstep && !pvt->is_cur_addr_mirrored && !pvt->is_close_pg)
3091 channel = first_channel;
3092
3093 snprintf(msg, sizeof(msg),
3094 "%s%s area:%s err_code:%04x:%04x socket:%d ha:%d channel_mask:%ld rank:%d",
3095 overflow ? " OVERFLOW" : "",
3096 (uncorrected_error && recoverable) ? " recoverable" : "",
3097 area_type,
3098 mscod, errcode,
3099 socket, ha,
3100 channel_mask,
3101 rank);
3102
3103 edac_dbg(0, "%s\n", msg);
3104
3105 /* FIXME: need support for channel mask */
3106
3107 if (channel == CHANNEL_UNSPECIFIED)
3108 channel = -1;
3109
3110 /* Call the helper to output message */
3111 edac_mc_handle_error(tp_event, mci, core_err_cnt,
3112 m->addr >> PAGE_SHIFT, m->addr & ~PAGE_MASK, 0,
3113 channel, dimm, -1,
3114 optype, msg);
3115 return;
3116 err_parsing:
3117 edac_mc_handle_error(tp_event, mci, core_err_cnt, 0, 0, 0,
3118 -1, -1, -1,
3119 msg, "");
3120
3121 }
3122
3123 /*
3124 * Check that logging is enabled and that this is the right type
3125 * of error for us to handle.
3126 */
3127 static int sbridge_mce_check_error(struct notifier_block *nb, unsigned long val,
3128 void *data)
3129 {
3130 struct mce *mce = (struct mce *)data;
3131 struct mem_ctl_info *mci;
3132 char *type;
3133
3134 if (mce->kflags & MCE_HANDLED_CEC)
3135 return NOTIFY_DONE;
3136
3137 /*
3138 * Just let mcelog handle it if the error is
3139 * outside the memory controller. A memory error
3140 * is indicated by bit 7 = 1 and bits = 8-11,13-15 = 0.
3141 * bit 12 has an special meaning.
3142 */
3143 if ((mce->status & 0xefff) >> 7 != 1)
3144 return NOTIFY_DONE;
3145
3146 /* Check ADDRV bit in STATUS */
3147 if (!GET_BITFIELD(mce->status, 58, 58))
3148 return NOTIFY_DONE;
3149
3150 /* Check MISCV bit in STATUS */
3151 if (!GET_BITFIELD(mce->status, 59, 59))
3152 return NOTIFY_DONE;
3153
3154 /* Check address type in MISC (physical address only) */
3155 if (GET_BITFIELD(mce->misc, 6, 8) != 2)
3156 return NOTIFY_DONE;
3157
3158 mci = get_mci_for_node_id(mce->socketid, IMC0);
3159 if (!mci)
3160 return NOTIFY_DONE;
3161
3162 if (mce->mcgstatus & MCG_STATUS_MCIP)
3163 type = "Exception";
3164 else
3165 type = "Event";
3166
3167 sbridge_mc_printk(mci, KERN_DEBUG, "HANDLING MCE MEMORY ERROR\n");
3168
3169 sbridge_mc_printk(mci, KERN_DEBUG, "CPU %d: Machine Check %s: %Lx "
3170 "Bank %d: %016Lx\n", mce->extcpu, type,
3171 mce->mcgstatus, mce->bank, mce->status);
3172 sbridge_mc_printk(mci, KERN_DEBUG, "TSC %llx ", mce->tsc);
3173 sbridge_mc_printk(mci, KERN_DEBUG, "ADDR %llx ", mce->addr);
3174 sbridge_mc_printk(mci, KERN_DEBUG, "MISC %llx ", mce->misc);
3175
3176 sbridge_mc_printk(mci, KERN_DEBUG, "PROCESSOR %u:%x TIME %llu SOCKET "
3177 "%u APIC %x\n", mce->cpuvendor, mce->cpuid,
3178 mce->time, mce->socketid, mce->apicid);
3179
3180 sbridge_mce_output_error(mci, mce);
3181
3182 /* Advice mcelog that the error were handled */
3183 mce->kflags |= MCE_HANDLED_EDAC;
3184 return NOTIFY_OK;
3185 }
3186
3187 static struct notifier_block sbridge_mce_dec = {
3188 .notifier_call = sbridge_mce_check_error,
3189 .priority = MCE_PRIO_EDAC,
3190 };
3191
3192 /****************************************************************************
3193 EDAC register/unregister logic
3194 ****************************************************************************/
3195
3196 static void sbridge_unregister_mci(struct sbridge_dev *sbridge_dev)
3197 {
3198 struct mem_ctl_info *mci = sbridge_dev->mci;
3199
3200 if (unlikely(!mci || !mci->pvt_info)) {
3201 edac_dbg(0, "MC: dev = %p\n", &sbridge_dev->pdev[0]->dev);
3202
3203 sbridge_printk(KERN_ERR, "Couldn't find mci handler\n");
3204 return;
3205 }
3206
3207 edac_dbg(0, "MC: mci = %p, dev = %p\n",
3208 mci, &sbridge_dev->pdev[0]->dev);
3209
3210 /* Remove MC sysfs nodes */
3211 edac_mc_del_mc(mci->pdev);
3212
3213 edac_dbg(1, "%s: free mci struct\n", mci->ctl_name);
3214 kfree(mci->ctl_name);
3215 edac_mc_free(mci);
3216 sbridge_dev->mci = NULL;
3217 }
3218
3219 static int sbridge_register_mci(struct sbridge_dev *sbridge_dev, enum type type)
3220 {
3221 struct mem_ctl_info *mci;
3222 struct edac_mc_layer layers[2];
3223 struct sbridge_pvt *pvt;
3224 struct pci_dev *pdev = sbridge_dev->pdev[0];
3225 int rc;
3226
3227 /* allocate a new MC control structure */
3228 layers[0].type = EDAC_MC_LAYER_CHANNEL;
3229 layers[0].size = type == KNIGHTS_LANDING ?
3230 KNL_MAX_CHANNELS : NUM_CHANNELS;
3231 layers[0].is_virt_csrow = false;
3232 layers[1].type = EDAC_MC_LAYER_SLOT;
3233 layers[1].size = type == KNIGHTS_LANDING ? 1 : MAX_DIMMS;
3234 layers[1].is_virt_csrow = true;
3235 mci = edac_mc_alloc(sbridge_dev->mc, ARRAY_SIZE(layers), layers,
3236 sizeof(*pvt));
3237
3238 if (unlikely(!mci))
3239 return -ENOMEM;
3240
3241 edac_dbg(0, "MC: mci = %p, dev = %p\n",
3242 mci, &pdev->dev);
3243
3244 pvt = mci->pvt_info;
3245 memset(pvt, 0, sizeof(*pvt));
3246
3247 /* Associate sbridge_dev and mci for future usage */
3248 pvt->sbridge_dev = sbridge_dev;
3249 sbridge_dev->mci = mci;
3250
3251 mci->mtype_cap = type == KNIGHTS_LANDING ?
3252 MEM_FLAG_DDR4 : MEM_FLAG_DDR3;
3253 mci->edac_ctl_cap = EDAC_FLAG_NONE;
3254 mci->edac_cap = EDAC_FLAG_NONE;
3255 mci->mod_name = EDAC_MOD_STR;
3256 mci->dev_name = pci_name(pdev);
3257 mci->ctl_page_to_phys = NULL;
3258
3259 pvt->info.type = type;
3260 switch (type) {
3261 case IVY_BRIDGE:
3262 pvt->info.rankcfgr = IB_RANK_CFG_A;
3263 pvt->info.get_tolm = ibridge_get_tolm;
3264 pvt->info.get_tohm = ibridge_get_tohm;
3265 pvt->info.dram_rule = ibridge_dram_rule;
3266 pvt->info.get_memory_type = get_memory_type;
3267 pvt->info.get_node_id = get_node_id;
3268 pvt->info.get_ha = ibridge_get_ha;
3269 pvt->info.rir_limit = rir_limit;
3270 pvt->info.sad_limit = sad_limit;
3271 pvt->info.interleave_mode = interleave_mode;
3272 pvt->info.dram_attr = dram_attr;
3273 pvt->info.max_sad = ARRAY_SIZE(ibridge_dram_rule);
3274 pvt->info.interleave_list = ibridge_interleave_list;
3275 pvt->info.interleave_pkg = ibridge_interleave_pkg;
3276 pvt->info.get_width = ibridge_get_width;
3277
3278 /* Store pci devices at mci for faster access */
3279 rc = ibridge_mci_bind_devs(mci, sbridge_dev);
3280 if (unlikely(rc < 0))
3281 goto fail0;
3282 get_source_id(mci);
3283 mci->ctl_name = kasprintf(GFP_KERNEL, "Ivy Bridge SrcID#%d_Ha#%d",
3284 pvt->sbridge_dev->source_id, pvt->sbridge_dev->dom);
3285 break;
3286 case SANDY_BRIDGE:
3287 pvt->info.rankcfgr = SB_RANK_CFG_A;
3288 pvt->info.get_tolm = sbridge_get_tolm;
3289 pvt->info.get_tohm = sbridge_get_tohm;
3290 pvt->info.dram_rule = sbridge_dram_rule;
3291 pvt->info.get_memory_type = get_memory_type;
3292 pvt->info.get_node_id = get_node_id;
3293 pvt->info.get_ha = sbridge_get_ha;
3294 pvt->info.rir_limit = rir_limit;
3295 pvt->info.sad_limit = sad_limit;
3296 pvt->info.interleave_mode = interleave_mode;
3297 pvt->info.dram_attr = dram_attr;
3298 pvt->info.max_sad = ARRAY_SIZE(sbridge_dram_rule);
3299 pvt->info.interleave_list = sbridge_interleave_list;
3300 pvt->info.interleave_pkg = sbridge_interleave_pkg;
3301 pvt->info.get_width = sbridge_get_width;
3302
3303 /* Store pci devices at mci for faster access */
3304 rc = sbridge_mci_bind_devs(mci, sbridge_dev);
3305 if (unlikely(rc < 0))
3306 goto fail0;
3307 get_source_id(mci);
3308 mci->ctl_name = kasprintf(GFP_KERNEL, "Sandy Bridge SrcID#%d_Ha#%d",
3309 pvt->sbridge_dev->source_id, pvt->sbridge_dev->dom);
3310 break;
3311 case HASWELL:
3312 /* rankcfgr isn't used */
3313 pvt->info.get_tolm = haswell_get_tolm;
3314 pvt->info.get_tohm = haswell_get_tohm;
3315 pvt->info.dram_rule = ibridge_dram_rule;
3316 pvt->info.get_memory_type = haswell_get_memory_type;
3317 pvt->info.get_node_id = haswell_get_node_id;
3318 pvt->info.get_ha = ibridge_get_ha;
3319 pvt->info.rir_limit = haswell_rir_limit;
3320 pvt->info.sad_limit = sad_limit;
3321 pvt->info.interleave_mode = interleave_mode;
3322 pvt->info.dram_attr = dram_attr;
3323 pvt->info.max_sad = ARRAY_SIZE(ibridge_dram_rule);
3324 pvt->info.interleave_list = ibridge_interleave_list;
3325 pvt->info.interleave_pkg = ibridge_interleave_pkg;
3326 pvt->info.get_width = ibridge_get_width;
3327
3328 /* Store pci devices at mci for faster access */
3329 rc = haswell_mci_bind_devs(mci, sbridge_dev);
3330 if (unlikely(rc < 0))
3331 goto fail0;
3332 get_source_id(mci);
3333 mci->ctl_name = kasprintf(GFP_KERNEL, "Haswell SrcID#%d_Ha#%d",
3334 pvt->sbridge_dev->source_id, pvt->sbridge_dev->dom);
3335 break;
3336 case BROADWELL:
3337 /* rankcfgr isn't used */
3338 pvt->info.get_tolm = haswell_get_tolm;
3339 pvt->info.get_tohm = haswell_get_tohm;
3340 pvt->info.dram_rule = ibridge_dram_rule;
3341 pvt->info.get_memory_type = haswell_get_memory_type;
3342 pvt->info.get_node_id = haswell_get_node_id;
3343 pvt->info.get_ha = ibridge_get_ha;
3344 pvt->info.rir_limit = haswell_rir_limit;
3345 pvt->info.sad_limit = sad_limit;
3346 pvt->info.interleave_mode = interleave_mode;
3347 pvt->info.dram_attr = dram_attr;
3348 pvt->info.max_sad = ARRAY_SIZE(ibridge_dram_rule);
3349 pvt->info.interleave_list = ibridge_interleave_list;
3350 pvt->info.interleave_pkg = ibridge_interleave_pkg;
3351 pvt->info.get_width = broadwell_get_width;
3352
3353 /* Store pci devices at mci for faster access */
3354 rc = broadwell_mci_bind_devs(mci, sbridge_dev);
3355 if (unlikely(rc < 0))
3356 goto fail0;
3357 get_source_id(mci);
3358 mci->ctl_name = kasprintf(GFP_KERNEL, "Broadwell SrcID#%d_Ha#%d",
3359 pvt->sbridge_dev->source_id, pvt->sbridge_dev->dom);
3360 break;
3361 case KNIGHTS_LANDING:
3362 /* pvt->info.rankcfgr == ??? */
3363 pvt->info.get_tolm = knl_get_tolm;
3364 pvt->info.get_tohm = knl_get_tohm;
3365 pvt->info.dram_rule = knl_dram_rule;
3366 pvt->info.get_memory_type = knl_get_memory_type;
3367 pvt->info.get_node_id = knl_get_node_id;
3368 pvt->info.get_ha = knl_get_ha;
3369 pvt->info.rir_limit = NULL;
3370 pvt->info.sad_limit = knl_sad_limit;
3371 pvt->info.interleave_mode = knl_interleave_mode;
3372 pvt->info.dram_attr = dram_attr_knl;
3373 pvt->info.max_sad = ARRAY_SIZE(knl_dram_rule);
3374 pvt->info.interleave_list = knl_interleave_list;
3375 pvt->info.interleave_pkg = ibridge_interleave_pkg;
3376 pvt->info.get_width = knl_get_width;
3377
3378 rc = knl_mci_bind_devs(mci, sbridge_dev);
3379 if (unlikely(rc < 0))
3380 goto fail0;
3381 get_source_id(mci);
3382 mci->ctl_name = kasprintf(GFP_KERNEL, "Knights Landing SrcID#%d_Ha#%d",
3383 pvt->sbridge_dev->source_id, pvt->sbridge_dev->dom);
3384 break;
3385 }
3386
3387 if (!mci->ctl_name) {
3388 rc = -ENOMEM;
3389 goto fail0;
3390 }
3391
3392 /* Get dimm basic config and the memory layout */
3393 rc = get_dimm_config(mci);
3394 if (rc < 0) {
3395 edac_dbg(0, "MC: failed to get_dimm_config()\n");
3396 goto fail;
3397 }
3398 get_memory_layout(mci);
3399
3400 /* record ptr to the generic device */
3401 mci->pdev = &pdev->dev;
3402
3403 /* add this new MC control structure to EDAC's list of MCs */
3404 if (unlikely(edac_mc_add_mc(mci))) {
3405 edac_dbg(0, "MC: failed edac_mc_add_mc()\n");
3406 rc = -EINVAL;
3407 goto fail;
3408 }
3409
3410 return 0;
3411
3412 fail:
3413 kfree(mci->ctl_name);
3414 fail0:
3415 edac_mc_free(mci);
3416 sbridge_dev->mci = NULL;
3417 return rc;
3418 }
3419
3420 static const struct x86_cpu_id sbridge_cpuids[] = {
3421 X86_MATCH_INTEL_FAM6_MODEL(SANDYBRIDGE_X, &pci_dev_descr_sbridge_table),
3422 X86_MATCH_INTEL_FAM6_MODEL(IVYBRIDGE_X, &pci_dev_descr_ibridge_table),
3423 X86_MATCH_INTEL_FAM6_MODEL(HASWELL_X, &pci_dev_descr_haswell_table),
3424 X86_MATCH_INTEL_FAM6_MODEL(BROADWELL_X, &pci_dev_descr_broadwell_table),
3425 X86_MATCH_INTEL_FAM6_MODEL(BROADWELL_D, &pci_dev_descr_broadwell_table),
3426 X86_MATCH_INTEL_FAM6_MODEL(XEON_PHI_KNL, &pci_dev_descr_knl_table),
3427 X86_MATCH_INTEL_FAM6_MODEL(XEON_PHI_KNM, &pci_dev_descr_knl_table),
3428 { }
3429 };
3430 MODULE_DEVICE_TABLE(x86cpu, sbridge_cpuids);
3431
3432 /*
3433 * sbridge_probe Get all devices and register memory controllers
3434 * present.
3435 * return:
3436 * 0 for FOUND a device
3437 * < 0 for error code
3438 */
3439
3440 static int sbridge_probe(const struct x86_cpu_id *id)
3441 {
3442 int rc = -ENODEV;
3443 u8 mc, num_mc = 0;
3444 struct sbridge_dev *sbridge_dev;
3445 struct pci_id_table *ptable = (struct pci_id_table *)id->driver_data;
3446
3447 /* get the pci devices we want to reserve for our use */
3448 rc = sbridge_get_all_devices(&num_mc, ptable);
3449
3450 if (unlikely(rc < 0)) {
3451 edac_dbg(0, "couldn't get all devices\n");
3452 goto fail0;
3453 }
3454
3455 mc = 0;
3456
3457 list_for_each_entry(sbridge_dev, &sbridge_edac_list, list) {
3458 edac_dbg(0, "Registering MC#%d (%d of %d)\n",
3459 mc, mc + 1, num_mc);
3460
3461 sbridge_dev->mc = mc++;
3462 rc = sbridge_register_mci(sbridge_dev, ptable->type);
3463 if (unlikely(rc < 0))
3464 goto fail1;
3465 }
3466
3467 sbridge_printk(KERN_INFO, "%s\n", SBRIDGE_REVISION);
3468
3469 return 0;
3470
3471 fail1:
3472 list_for_each_entry(sbridge_dev, &sbridge_edac_list, list)
3473 sbridge_unregister_mci(sbridge_dev);
3474
3475 sbridge_put_all_devices();
3476 fail0:
3477 return rc;
3478 }
3479
3480 /*
3481 * sbridge_remove cleanup
3482 *
3483 */
3484 static void sbridge_remove(void)
3485 {
3486 struct sbridge_dev *sbridge_dev;
3487
3488 edac_dbg(0, "\n");
3489
3490 list_for_each_entry(sbridge_dev, &sbridge_edac_list, list)
3491 sbridge_unregister_mci(sbridge_dev);
3492
3493 /* Release PCI resources */
3494 sbridge_put_all_devices();
3495 }
3496
3497 /*
3498 * sbridge_init Module entry function
3499 * Try to initialize this module for its devices
3500 */
3501 static int __init sbridge_init(void)
3502 {
3503 const struct x86_cpu_id *id;
3504 const char *owner;
3505 int rc;
3506
3507 edac_dbg(2, "\n");
3508
3509 owner = edac_get_owner();
3510 if (owner && strncmp(owner, EDAC_MOD_STR, sizeof(EDAC_MOD_STR)))
3511 return -EBUSY;
3512
3513 id = x86_match_cpu(sbridge_cpuids);
3514 if (!id)
3515 return -ENODEV;
3516
3517 /* Ensure that the OPSTATE is set correctly for POLL or NMI */
3518 opstate_init();
3519
3520 rc = sbridge_probe(id);
3521
3522 if (rc >= 0) {
3523 mce_register_decode_chain(&sbridge_mce_dec);
3524 return 0;
3525 }
3526
3527 sbridge_printk(KERN_ERR, "Failed to register device with error %d.\n",
3528 rc);
3529
3530 return rc;
3531 }
3532
3533 /*
3534 * sbridge_exit() Module exit function
3535 * Unregister the driver
3536 */
3537 static void __exit sbridge_exit(void)
3538 {
3539 edac_dbg(2, "\n");
3540 sbridge_remove();
3541 mce_unregister_decode_chain(&sbridge_mce_dec);
3542 }
3543
3544 module_init(sbridge_init);
3545 module_exit(sbridge_exit);
3546
3547 module_param(edac_op_state, int, 0444);
3548 MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll,1=NMI");
3549
3550 MODULE_LICENSE("GPL");
3551 MODULE_AUTHOR("Mauro Carvalho Chehab");
3552 MODULE_AUTHOR("Red Hat Inc. (https://www.redhat.com)");
3553 MODULE_DESCRIPTION("MC Driver for Intel Sandy Bridge and Ivy Bridge memory controllers - "
3554 SBRIDGE_REVISION);
Linux with added FPC-III support