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c0d12172 DJ |
1 | /* |
2 | * Generic EDAC defs | |
3 | * | |
4 | * Author: Dave Jiang <djiang@mvista.com> | |
5 | * | |
c3c52bce | 6 | * 2006-2008 (c) MontaVista Software, Inc. This file is licensed under |
c0d12172 DJ |
7 | * the terms of the GNU General Public License version 2. This program |
8 | * is licensed "as is" without any warranty of any kind, whether express | |
9 | * or implied. | |
10 | * | |
11 | */ | |
12 | #ifndef _LINUX_EDAC_H_ | |
13 | #define _LINUX_EDAC_H_ | |
14 | ||
60063497 | 15 | #include <linux/atomic.h> |
7a623c03 | 16 | #include <linux/device.h> |
313162d0 PG |
17 | #include <linux/completion.h> |
18 | #include <linux/workqueue.h> | |
452a6bf9 | 19 | #include <linux/debugfs.h> |
6b588594 | 20 | #include <linux/numa.h> |
313162d0 | 21 | |
0b892c71 MCC |
22 | #define EDAC_DEVICE_NAME_LEN 31 |
23 | ||
313162d0 | 24 | struct device; |
c0d12172 DJ |
25 | |
26 | #define EDAC_OPSTATE_INVAL -1 | |
27 | #define EDAC_OPSTATE_POLL 0 | |
28 | #define EDAC_OPSTATE_NMI 1 | |
29 | #define EDAC_OPSTATE_INT 2 | |
30 | ||
31 | extern int edac_op_state; | |
c0d12172 | 32 | |
fee27d7d | 33 | struct bus_type *edac_get_sysfs_subsys(void); |
bffc7dec BP |
34 | int edac_get_report_status(void); |
35 | void edac_set_report_status(int new); | |
c0d12172 | 36 | |
c700f013 CG |
37 | enum { |
38 | EDAC_REPORTING_ENABLED, | |
39 | EDAC_REPORTING_DISABLED, | |
40 | EDAC_REPORTING_FORCE | |
41 | }; | |
42 | ||
c3c52bce HM |
43 | static inline void opstate_init(void) |
44 | { | |
45 | switch (edac_op_state) { | |
46 | case EDAC_OPSTATE_POLL: | |
47 | case EDAC_OPSTATE_NMI: | |
48 | break; | |
49 | default: | |
50 | edac_op_state = EDAC_OPSTATE_POLL; | |
51 | } | |
52 | return; | |
53 | } | |
54 | ||
c7ef7645 | 55 | /* Max length of a DIMM label*/ |
ddeb3547 | 56 | #define EDAC_MC_LABEL_LEN 31 |
ddeb3547 | 57 | |
c7ef7645 | 58 | /* Maximum size of the location string */ |
56507694 | 59 | #define LOCATION_SIZE 256 |
c7ef7645 MCC |
60 | |
61 | /* Defines the maximum number of labels that can be reported */ | |
62 | #define EDAC_MAX_LABELS 8 | |
63 | ||
64 | /* String used to join two or more labels */ | |
65 | #define OTHER_LABEL " or " | |
66 | ||
b0610bb8 MCC |
67 | /** |
68 | * enum dev_type - describe the type of memory DRAM chips used at the stick | |
69 | * @DEV_UNKNOWN: Can't be determined, or MC doesn't support detect it | |
70 | * @DEV_X1: 1 bit for data | |
71 | * @DEV_X2: 2 bits for data | |
72 | * @DEV_X4: 4 bits for data | |
73 | * @DEV_X8: 8 bits for data | |
74 | * @DEV_X16: 16 bits for data | |
75 | * @DEV_X32: 32 bits for data | |
76 | * @DEV_X64: 64 bits for data | |
77 | * | |
78 | * Typical values are x4 and x8. | |
79 | */ | |
ddeb3547 MCC |
80 | enum dev_type { |
81 | DEV_UNKNOWN = 0, | |
82 | DEV_X1, | |
83 | DEV_X2, | |
84 | DEV_X4, | |
85 | DEV_X8, | |
86 | DEV_X16, | |
87 | DEV_X32, /* Do these parts exist? */ | |
88 | DEV_X64 /* Do these parts exist? */ | |
89 | }; | |
90 | ||
91 | #define DEV_FLAG_UNKNOWN BIT(DEV_UNKNOWN) | |
92 | #define DEV_FLAG_X1 BIT(DEV_X1) | |
93 | #define DEV_FLAG_X2 BIT(DEV_X2) | |
94 | #define DEV_FLAG_X4 BIT(DEV_X4) | |
95 | #define DEV_FLAG_X8 BIT(DEV_X8) | |
96 | #define DEV_FLAG_X16 BIT(DEV_X16) | |
97 | #define DEV_FLAG_X32 BIT(DEV_X32) | |
98 | #define DEV_FLAG_X64 BIT(DEV_X64) | |
99 | ||
982216a4 MCC |
100 | /** |
101 | * enum hw_event_mc_err_type - type of the detected error | |
102 | * | |
103 | * @HW_EVENT_ERR_CORRECTED: Corrected Error - Indicates that an ECC | |
104 | * corrected error was detected | |
105 | * @HW_EVENT_ERR_UNCORRECTED: Uncorrected Error - Indicates an error that | |
106 | * can't be corrected by ECC, but it is not | |
107 | * fatal (maybe it is on an unused memory area, | |
108 | * or the memory controller could recover from | |
109 | * it for example, by re-trying the operation). | |
4838a0de YG |
110 | * @HW_EVENT_ERR_DEFERRED: Deferred Error - Indicates an uncorrectable |
111 | * error whose handling is not urgent. This could | |
112 | * be due to hardware data poisoning where the | |
113 | * system can continue operation until the poisoned | |
114 | * data is consumed. Preemptive measures may also | |
115 | * be taken, e.g. offlining pages, etc. | |
982216a4 MCC |
116 | * @HW_EVENT_ERR_FATAL: Fatal Error - Uncorrected error that could not |
117 | * be recovered. | |
e0020758 MCC |
118 | * @HW_EVENT_ERR_INFO: Informational - The CPER spec defines a forth |
119 | * type of error: informational logs. | |
982216a4 MCC |
120 | */ |
121 | enum hw_event_mc_err_type { | |
122 | HW_EVENT_ERR_CORRECTED, | |
123 | HW_EVENT_ERR_UNCORRECTED, | |
d12a969e | 124 | HW_EVENT_ERR_DEFERRED, |
982216a4 | 125 | HW_EVENT_ERR_FATAL, |
8dd93d45 | 126 | HW_EVENT_ERR_INFO, |
982216a4 MCC |
127 | }; |
128 | ||
8dd93d45 MCC |
129 | static inline char *mc_event_error_type(const unsigned int err_type) |
130 | { | |
131 | switch (err_type) { | |
132 | case HW_EVENT_ERR_CORRECTED: | |
133 | return "Corrected"; | |
134 | case HW_EVENT_ERR_UNCORRECTED: | |
135 | return "Uncorrected"; | |
d12a969e YG |
136 | case HW_EVENT_ERR_DEFERRED: |
137 | return "Deferred"; | |
8dd93d45 MCC |
138 | case HW_EVENT_ERR_FATAL: |
139 | return "Fatal"; | |
140 | default: | |
141 | case HW_EVENT_ERR_INFO: | |
142 | return "Info"; | |
143 | } | |
144 | } | |
145 | ||
01a6e28b MCC |
146 | /** |
147 | * enum mem_type - memory types. For a more detailed reference, please see | |
148 | * http://en.wikipedia.org/wiki/DRAM | |
149 | * | |
e0020758 | 150 | * @MEM_EMPTY: Empty csrow |
01a6e28b MCC |
151 | * @MEM_RESERVED: Reserved csrow type |
152 | * @MEM_UNKNOWN: Unknown csrow type | |
153 | * @MEM_FPM: FPM - Fast Page Mode, used on systems up to 1995. | |
154 | * @MEM_EDO: EDO - Extended data out, used on systems up to 1998. | |
155 | * @MEM_BEDO: BEDO - Burst Extended data out, an EDO variant. | |
156 | * @MEM_SDR: SDR - Single data rate SDRAM | |
157 | * http://en.wikipedia.org/wiki/Synchronous_dynamic_random-access_memory | |
158 | * They use 3 pins for chip select: Pins 0 and 2 are | |
159 | * for rank 0; pins 1 and 3 are for rank 1, if the memory | |
160 | * is dual-rank. | |
161 | * @MEM_RDR: Registered SDR SDRAM | |
162 | * @MEM_DDR: Double data rate SDRAM | |
163 | * http://en.wikipedia.org/wiki/DDR_SDRAM | |
164 | * @MEM_RDDR: Registered Double data rate SDRAM | |
165 | * This is a variant of the DDR memories. | |
166 | * A registered memory has a buffer inside it, hiding | |
167 | * part of the memory details to the memory controller. | |
168 | * @MEM_RMBS: Rambus DRAM, used on a few Pentium III/IV controllers. | |
169 | * @MEM_DDR2: DDR2 RAM, as described at JEDEC JESD79-2F. | |
eca90a3b AA |
170 | * Those memories are labeled as "PC2-" instead of "PC" to |
171 | * differentiate from DDR. | |
01a6e28b MCC |
172 | * @MEM_FB_DDR2: Fully-Buffered DDR2, as described at JEDEC Std No. 205 |
173 | * and JESD206. | |
174 | * Those memories are accessed per DIMM slot, and not by | |
175 | * a chip select signal. | |
176 | * @MEM_RDDR2: Registered DDR2 RAM | |
177 | * This is a variant of the DDR2 memories. | |
178 | * @MEM_XDR: Rambus XDR | |
179 | * It is an evolution of the original RAMBUS memories, | |
180 | * created to compete with DDR2. Weren't used on any | |
181 | * x86 arch, but cell_edac PPC memory controller uses it. | |
182 | * @MEM_DDR3: DDR3 RAM | |
183 | * @MEM_RDDR3: Registered DDR3 RAM | |
184 | * This is a variant of the DDR3 memories. | |
1e8096bb | 185 | * @MEM_LRDDR3: Load-Reduced DDR3 memory. |
348fec70 | 186 | * @MEM_DDR4: Unbuffered DDR4 RAM |
7b827835 AR |
187 | * @MEM_RDDR4: Registered DDR4 RAM |
188 | * This is a variant of the DDR4 memories. | |
1e8096bb | 189 | * @MEM_LRDDR4: Load-Reduced DDR4 memory. |
001f8613 | 190 | * @MEM_NVDIMM: Non-volatile RAM |
01a6e28b | 191 | */ |
ddeb3547 | 192 | enum mem_type { |
01a6e28b MCC |
193 | MEM_EMPTY = 0, |
194 | MEM_RESERVED, | |
195 | MEM_UNKNOWN, | |
196 | MEM_FPM, | |
197 | MEM_EDO, | |
198 | MEM_BEDO, | |
199 | MEM_SDR, | |
200 | MEM_RDR, | |
201 | MEM_DDR, | |
202 | MEM_RDDR, | |
203 | MEM_RMBS, | |
204 | MEM_DDR2, | |
205 | MEM_FB_DDR2, | |
206 | MEM_RDDR2, | |
207 | MEM_XDR, | |
208 | MEM_DDR3, | |
209 | MEM_RDDR3, | |
348fec70 | 210 | MEM_LRDDR3, |
7b827835 AR |
211 | MEM_DDR4, |
212 | MEM_RDDR4, | |
1e8096bb | 213 | MEM_LRDDR4, |
001f8613 | 214 | MEM_NVDIMM, |
ddeb3547 MCC |
215 | }; |
216 | ||
217 | #define MEM_FLAG_EMPTY BIT(MEM_EMPTY) | |
218 | #define MEM_FLAG_RESERVED BIT(MEM_RESERVED) | |
219 | #define MEM_FLAG_UNKNOWN BIT(MEM_UNKNOWN) | |
220 | #define MEM_FLAG_FPM BIT(MEM_FPM) | |
221 | #define MEM_FLAG_EDO BIT(MEM_EDO) | |
222 | #define MEM_FLAG_BEDO BIT(MEM_BEDO) | |
223 | #define MEM_FLAG_SDR BIT(MEM_SDR) | |
224 | #define MEM_FLAG_RDR BIT(MEM_RDR) | |
225 | #define MEM_FLAG_DDR BIT(MEM_DDR) | |
226 | #define MEM_FLAG_RDDR BIT(MEM_RDDR) | |
227 | #define MEM_FLAG_RMBS BIT(MEM_RMBS) | |
228 | #define MEM_FLAG_DDR2 BIT(MEM_DDR2) | |
229 | #define MEM_FLAG_FB_DDR2 BIT(MEM_FB_DDR2) | |
230 | #define MEM_FLAG_RDDR2 BIT(MEM_RDDR2) | |
231 | #define MEM_FLAG_XDR BIT(MEM_XDR) | |
255379ae JS |
232 | #define MEM_FLAG_DDR3 BIT(MEM_DDR3) |
233 | #define MEM_FLAG_RDDR3 BIT(MEM_RDDR3) | |
234 | #define MEM_FLAG_DDR4 BIT(MEM_DDR4) | |
235 | #define MEM_FLAG_RDDR4 BIT(MEM_RDDR4) | |
1e8096bb | 236 | #define MEM_FLAG_LRDDR4 BIT(MEM_LRDDR4) |
001f8613 | 237 | #define MEM_FLAG_NVDIMM BIT(MEM_NVDIMM) |
ddeb3547 | 238 | |
b0610bb8 MCC |
239 | /** |
240 | * enum edac-type - Error Detection and Correction capabilities and mode | |
241 | * @EDAC_UNKNOWN: Unknown if ECC is available | |
242 | * @EDAC_NONE: Doesn't support ECC | |
243 | * @EDAC_RESERVED: Reserved ECC type | |
244 | * @EDAC_PARITY: Detects parity errors | |
245 | * @EDAC_EC: Error Checking - no correction | |
246 | * @EDAC_SECDED: Single bit error correction, Double detection | |
247 | * @EDAC_S2ECD2ED: Chipkill x2 devices - do these exist? | |
248 | * @EDAC_S4ECD4ED: Chipkill x4 devices | |
249 | * @EDAC_S8ECD8ED: Chipkill x8 devices | |
250 | * @EDAC_S16ECD16ED: Chipkill x16 devices | |
251 | */ | |
ddeb3547 | 252 | enum edac_type { |
b0610bb8 MCC |
253 | EDAC_UNKNOWN = 0, |
254 | EDAC_NONE, | |
255 | EDAC_RESERVED, | |
256 | EDAC_PARITY, | |
257 | EDAC_EC, | |
258 | EDAC_SECDED, | |
259 | EDAC_S2ECD2ED, | |
260 | EDAC_S4ECD4ED, | |
261 | EDAC_S8ECD8ED, | |
262 | EDAC_S16ECD16ED, | |
ddeb3547 MCC |
263 | }; |
264 | ||
265 | #define EDAC_FLAG_UNKNOWN BIT(EDAC_UNKNOWN) | |
266 | #define EDAC_FLAG_NONE BIT(EDAC_NONE) | |
267 | #define EDAC_FLAG_PARITY BIT(EDAC_PARITY) | |
268 | #define EDAC_FLAG_EC BIT(EDAC_EC) | |
269 | #define EDAC_FLAG_SECDED BIT(EDAC_SECDED) | |
270 | #define EDAC_FLAG_S2ECD2ED BIT(EDAC_S2ECD2ED) | |
271 | #define EDAC_FLAG_S4ECD4ED BIT(EDAC_S4ECD4ED) | |
272 | #define EDAC_FLAG_S8ECD8ED BIT(EDAC_S8ECD8ED) | |
273 | #define EDAC_FLAG_S16ECD16ED BIT(EDAC_S16ECD16ED) | |
274 | ||
b0610bb8 MCC |
275 | /** |
276 | * enum scrub_type - scrubbing capabilities | |
e0020758 | 277 | * @SCRUB_UNKNOWN: Unknown if scrubber is available |
b0610bb8 MCC |
278 | * @SCRUB_NONE: No scrubber |
279 | * @SCRUB_SW_PROG: SW progressive (sequential) scrubbing | |
280 | * @SCRUB_SW_SRC: Software scrub only errors | |
281 | * @SCRUB_SW_PROG_SRC: Progressive software scrub from an error | |
282 | * @SCRUB_SW_TUNABLE: Software scrub frequency is tunable | |
283 | * @SCRUB_HW_PROG: HW progressive (sequential) scrubbing | |
284 | * @SCRUB_HW_SRC: Hardware scrub only errors | |
285 | * @SCRUB_HW_PROG_SRC: Progressive hardware scrub from an error | |
e0020758 | 286 | * @SCRUB_HW_TUNABLE: Hardware scrub frequency is tunable |
b0610bb8 | 287 | */ |
ddeb3547 | 288 | enum scrub_type { |
b0610bb8 MCC |
289 | SCRUB_UNKNOWN = 0, |
290 | SCRUB_NONE, | |
291 | SCRUB_SW_PROG, | |
292 | SCRUB_SW_SRC, | |
293 | SCRUB_SW_PROG_SRC, | |
294 | SCRUB_SW_TUNABLE, | |
295 | SCRUB_HW_PROG, | |
296 | SCRUB_HW_SRC, | |
297 | SCRUB_HW_PROG_SRC, | |
298 | SCRUB_HW_TUNABLE | |
ddeb3547 MCC |
299 | }; |
300 | ||
301 | #define SCRUB_FLAG_SW_PROG BIT(SCRUB_SW_PROG) | |
302 | #define SCRUB_FLAG_SW_SRC BIT(SCRUB_SW_SRC) | |
303 | #define SCRUB_FLAG_SW_PROG_SRC BIT(SCRUB_SW_PROG_SRC) | |
304 | #define SCRUB_FLAG_SW_TUN BIT(SCRUB_SW_SCRUB_TUNABLE) | |
305 | #define SCRUB_FLAG_HW_PROG BIT(SCRUB_HW_PROG) | |
306 | #define SCRUB_FLAG_HW_SRC BIT(SCRUB_HW_SRC) | |
307 | #define SCRUB_FLAG_HW_PROG_SRC BIT(SCRUB_HW_PROG_SRC) | |
308 | #define SCRUB_FLAG_HW_TUN BIT(SCRUB_HW_TUNABLE) | |
309 | ||
310 | /* FIXME - should have notify capabilities: NMI, LOG, PROC, etc */ | |
311 | ||
312 | /* EDAC internal operation states */ | |
313 | #define OP_ALLOC 0x100 | |
314 | #define OP_RUNNING_POLL 0x201 | |
315 | #define OP_RUNNING_INTERRUPT 0x202 | |
316 | #define OP_RUNNING_POLL_INTR 0x203 | |
317 | #define OP_OFFLINE 0x300 | |
318 | ||
982216a4 MCC |
319 | /** |
320 | * enum edac_mc_layer - memory controller hierarchy layer | |
321 | * | |
322 | * @EDAC_MC_LAYER_BRANCH: memory layer is named "branch" | |
323 | * @EDAC_MC_LAYER_CHANNEL: memory layer is named "channel" | |
324 | * @EDAC_MC_LAYER_SLOT: memory layer is named "slot" | |
325 | * @EDAC_MC_LAYER_CHIP_SELECT: memory layer is named "chip select" | |
c66b5a79 MCC |
326 | * @EDAC_MC_LAYER_ALL_MEM: memory layout is unknown. All memory is mapped |
327 | * as a single memory area. This is used when | |
328 | * retrieving errors from a firmware driven driver. | |
982216a4 MCC |
329 | * |
330 | * This enum is used by the drivers to tell edac_mc_sysfs what name should | |
331 | * be used when describing a memory stick location. | |
332 | */ | |
333 | enum edac_mc_layer_type { | |
334 | EDAC_MC_LAYER_BRANCH, | |
335 | EDAC_MC_LAYER_CHANNEL, | |
336 | EDAC_MC_LAYER_SLOT, | |
337 | EDAC_MC_LAYER_CHIP_SELECT, | |
c66b5a79 | 338 | EDAC_MC_LAYER_ALL_MEM, |
982216a4 MCC |
339 | }; |
340 | ||
341 | /** | |
342 | * struct edac_mc_layer - describes the memory controller hierarchy | |
e0020758 | 343 | * @type: layer type |
982216a4 MCC |
344 | * @size: number of components per layer. For example, |
345 | * if the channel layer has two channels, size = 2 | |
346 | * @is_virt_csrow: This layer is part of the "csrow" when old API | |
347 | * compatibility mode is enabled. Otherwise, it is | |
348 | * a channel | |
349 | */ | |
350 | struct edac_mc_layer { | |
351 | enum edac_mc_layer_type type; | |
352 | unsigned size; | |
353 | bool is_virt_csrow; | |
354 | }; | |
355 | ||
356 | /* | |
357 | * Maximum number of layers used by the memory controller to uniquely | |
358 | * identify a single memory stick. | |
359 | * NOTE: Changing this constant requires not only to change the constant | |
360 | * below, but also to change the existing code at the core, as there are | |
361 | * some code there that are optimized for 3 layers. | |
362 | */ | |
363 | #define EDAC_MAX_LAYERS 3 | |
364 | ||
a7d7d2e1 | 365 | struct dimm_info { |
7a623c03 MCC |
366 | struct device dev; |
367 | ||
a7d7d2e1 | 368 | char label[EDAC_MC_LABEL_LEN + 1]; /* DIMM label on motherboard */ |
4275be63 MCC |
369 | |
370 | /* Memory location data */ | |
d55c79ac | 371 | unsigned int location[EDAC_MAX_LAYERS]; |
4275be63 MCC |
372 | |
373 | struct mem_ctl_info *mci; /* the parent */ | |
977b1ce7 | 374 | unsigned int idx; /* index within the parent dimm array */ |
084a4fcc MCC |
375 | |
376 | u32 grain; /* granularity of reported error in bytes */ | |
377 | enum dev_type dtype; /* memory device type */ | |
378 | enum mem_type mtype; /* memory dimm type */ | |
379 | enum edac_type edac_mode; /* EDAC mode for this dimm */ | |
380 | ||
4275be63 | 381 | u32 nr_pages; /* number of pages on this dimm */ |
a895bf8b | 382 | |
d55c79ac | 383 | unsigned int csrow, cschannel; /* Points to the old API data */ |
c798c88f FW |
384 | |
385 | u16 smbios_handle; /* Handle for SMBIOS type 17 */ | |
4aa92c86 RR |
386 | |
387 | u32 ce_count; | |
388 | u32 ue_count; | |
a7d7d2e1 MCC |
389 | }; |
390 | ||
a4b4be3f MCC |
391 | /** |
392 | * struct rank_info - contains the information for one DIMM rank | |
393 | * | |
394 | * @chan_idx: channel number where the rank is (typically, 0 or 1) | |
395 | * @ce_count: number of correctable errors for this rank | |
a4b4be3f MCC |
396 | * @csrow: A pointer to the chip select row structure (the parent |
397 | * structure). The location of the rank is given by | |
398 | * the (csrow->csrow_idx, chan_idx) vector. | |
a7d7d2e1 MCC |
399 | * @dimm: A pointer to the DIMM structure, where the DIMM label |
400 | * information is stored. | |
401 | * | |
402 | * FIXME: Currently, the EDAC core model will assume one DIMM per rank. | |
403 | * This is a bad assumption, but it makes this patch easier. Later | |
404 | * patches in this series will fix this issue. | |
a4b4be3f MCC |
405 | */ |
406 | struct rank_info { | |
407 | int chan_idx; | |
a7d7d2e1 MCC |
408 | struct csrow_info *csrow; |
409 | struct dimm_info *dimm; | |
4275be63 MCC |
410 | |
411 | u32 ce_count; /* Correctable Errors for this csrow */ | |
ddeb3547 MCC |
412 | }; |
413 | ||
414 | struct csrow_info { | |
7a623c03 MCC |
415 | struct device dev; |
416 | ||
a895bf8b | 417 | /* Used only by edac_mc_find_csrow_by_page() */ |
084a4fcc MCC |
418 | unsigned long first_page; /* first page number in csrow */ |
419 | unsigned long last_page; /* last page number in csrow */ | |
ddeb3547 | 420 | unsigned long page_mask; /* used for interleaving - |
a895bf8b MCC |
421 | * 0UL for non intlv */ |
422 | ||
084a4fcc MCC |
423 | int csrow_idx; /* the chip-select row */ |
424 | ||
ddeb3547 MCC |
425 | u32 ue_count; /* Uncorrectable Errors for this csrow */ |
426 | u32 ce_count; /* Correctable Errors for this csrow */ | |
084a4fcc | 427 | |
ddeb3547 MCC |
428 | struct mem_ctl_info *mci; /* the parent */ |
429 | ||
ddeb3547 MCC |
430 | /* channel information for this csrow */ |
431 | u32 nr_channels; | |
de3910eb | 432 | struct rank_info **channels; |
ddeb3547 MCC |
433 | }; |
434 | ||
7a623c03 MCC |
435 | /* |
436 | * struct errcount_attribute - used to store the several error counts | |
437 | */ | |
438 | struct errcount_attribute_data { | |
439 | int n_layers; | |
440 | int pos[EDAC_MAX_LAYERS]; | |
441 | int layer0, layer1, layer2; | |
ddeb3547 MCC |
442 | }; |
443 | ||
c7ef7645 | 444 | /** |
e0020758 | 445 | * struct edac_raw_error_desc - Raw error report structure |
c7ef7645 MCC |
446 | * @grain: minimum granularity for an error report, in bytes |
447 | * @error_count: number of errors of the same type | |
672ef0e5 | 448 | * @type: severity of the error (CE/UE/Fatal) |
c7ef7645 MCC |
449 | * @top_layer: top layer of the error (layer[0]) |
450 | * @mid_layer: middle layer of the error (layer[1]) | |
451 | * @low_layer: low layer of the error (layer[2]) | |
452 | * @page_frame_number: page where the error happened | |
453 | * @offset_in_page: page offset | |
454 | * @syndrome: syndrome of the error (or 0 if unknown or if | |
455 | * the syndrome is not applicable) | |
456 | * @msg: error message | |
457 | * @location: location of the error | |
458 | * @label: label of the affected DIMM(s) | |
459 | * @other_detail: other driver-specific detail about the error | |
c7ef7645 MCC |
460 | */ |
461 | struct edac_raw_error_desc { | |
c7ef7645 MCC |
462 | char location[LOCATION_SIZE]; |
463 | char label[(EDAC_MC_LABEL_LEN + 1 + sizeof(OTHER_LABEL)) * EDAC_MAX_LABELS]; | |
464 | long grain; | |
465 | ||
c7ef7645 | 466 | u16 error_count; |
672ef0e5 | 467 | enum hw_event_mc_err_type type; |
c7ef7645 MCC |
468 | int top_layer; |
469 | int mid_layer; | |
470 | int low_layer; | |
471 | unsigned long page_frame_number; | |
472 | unsigned long offset_in_page; | |
473 | unsigned long syndrome; | |
474 | const char *msg; | |
475 | const char *other_detail; | |
c7ef7645 MCC |
476 | }; |
477 | ||
ddeb3547 MCC |
478 | /* MEMORY controller information structure |
479 | */ | |
480 | struct mem_ctl_info { | |
7a623c03 | 481 | struct device dev; |
88d84ac9 | 482 | struct bus_type *bus; |
7a623c03 | 483 | |
ddeb3547 MCC |
484 | struct list_head link; /* for global list of mem_ctl_info structs */ |
485 | ||
486 | struct module *owner; /* Module owner of this control struct */ | |
487 | ||
488 | unsigned long mtype_cap; /* memory types supported by mc */ | |
489 | unsigned long edac_ctl_cap; /* Mem controller EDAC capabilities */ | |
490 | unsigned long edac_cap; /* configuration capabilities - this is | |
491 | * closely related to edac_ctl_cap. The | |
492 | * difference is that the controller may be | |
493 | * capable of s4ecd4ed which would be listed | |
494 | * in edac_ctl_cap, but if channels aren't | |
495 | * capable of s4ecd4ed then the edac_cap would | |
496 | * not have that capability. | |
497 | */ | |
498 | unsigned long scrub_cap; /* chipset scrub capabilities */ | |
499 | enum scrub_type scrub_mode; /* current scrub mode */ | |
500 | ||
501 | /* Translates sdram memory scrub rate given in bytes/sec to the | |
502 | internal representation and configures whatever else needs | |
503 | to be configured. | |
504 | */ | |
505 | int (*set_sdram_scrub_rate) (struct mem_ctl_info * mci, u32 bw); | |
506 | ||
507 | /* Get the current sdram memory scrub rate from the internal | |
508 | representation and converts it to the closest matching | |
509 | bandwidth in bytes/sec. | |
510 | */ | |
511 | int (*get_sdram_scrub_rate) (struct mem_ctl_info * mci); | |
512 | ||
513 | ||
514 | /* pointer to edac checking routine */ | |
515 | void (*edac_check) (struct mem_ctl_info * mci); | |
516 | ||
517 | /* | |
518 | * Remaps memory pages: controller pages to physical pages. | |
519 | * For most MC's, this will be NULL. | |
520 | */ | |
521 | /* FIXME - why not send the phys page to begin with? */ | |
522 | unsigned long (*ctl_page_to_phys) (struct mem_ctl_info * mci, | |
523 | unsigned long page); | |
524 | int mc_idx; | |
de3910eb | 525 | struct csrow_info **csrows; |
d55c79ac | 526 | unsigned int nr_csrows, num_cschannel; |
4275be63 | 527 | |
7a623c03 MCC |
528 | /* |
529 | * Memory Controller hierarchy | |
530 | * | |
531 | * There are basically two types of memory controller: the ones that | |
532 | * sees memory sticks ("dimms"), and the ones that sees memory ranks. | |
533 | * All old memory controllers enumerate memories per rank, but most | |
534 | * of the recent drivers enumerate memories per DIMM, instead. | |
9713faec | 535 | * When the memory controller is per rank, csbased is true. |
7a623c03 | 536 | */ |
d55c79ac | 537 | unsigned int n_layers; |
4275be63 | 538 | struct edac_mc_layer *layers; |
9713faec | 539 | bool csbased; |
a7d7d2e1 MCC |
540 | |
541 | /* | |
542 | * DIMM info. Will eventually remove the entire csrows_info some day | |
543 | */ | |
d55c79ac | 544 | unsigned int tot_dimms; |
de3910eb | 545 | struct dimm_info **dimms; |
a7d7d2e1 | 546 | |
ddeb3547 MCC |
547 | /* |
548 | * FIXME - what about controllers on other busses? - IDs must be | |
549 | * unique. dev pointer should be sufficiently unique, but | |
550 | * BUS:SLOT.FUNC numbers may not be unique. | |
551 | */ | |
fd687502 | 552 | struct device *pdev; |
ddeb3547 | 553 | const char *mod_name; |
ddeb3547 MCC |
554 | const char *ctl_name; |
555 | const char *dev_name; | |
ddeb3547 | 556 | void *pvt_info; |
ddeb3547 MCC |
557 | unsigned long start_time; /* mci load start time (in jiffies) */ |
558 | ||
4275be63 MCC |
559 | /* |
560 | * drivers shouldn't access those fields directly, as the core | |
561 | * already handles that. | |
562 | */ | |
563 | u32 ce_noinfo_count, ue_noinfo_count; | |
5926ff50 | 564 | u32 ue_mc, ce_mc; |
4275be63 | 565 | |
ddeb3547 MCC |
566 | struct completion complete; |
567 | ||
ddeb3547 MCC |
568 | /* Additional top controller level attributes, but specified |
569 | * by the low level driver. | |
570 | * | |
571 | * Set by the low level driver to provide attributes at the | |
4275be63 | 572 | * controller level. |
ddeb3547 MCC |
573 | * An array of structures, NULL terminated |
574 | * | |
575 | * If attributes are desired, then set to array of attributes | |
576 | * If no attributes are desired, leave NULL | |
577 | */ | |
578 | const struct mcidev_sysfs_attribute *mc_driver_sysfs_attributes; | |
579 | ||
580 | /* work struct for this MC */ | |
581 | struct delayed_work work; | |
582 | ||
c7ef7645 MCC |
583 | /* |
584 | * Used to report an error - by being at the global struct | |
585 | * makes the memory allocated by the EDAC core | |
586 | */ | |
587 | struct edac_raw_error_desc error_desc; | |
588 | ||
ddeb3547 MCC |
589 | /* the internal state of this controller instance */ |
590 | int op_state; | |
452a6bf9 | 591 | |
452a6bf9 MCC |
592 | struct dentry *debugfs; |
593 | u8 fake_inject_layer[EDAC_MAX_LAYERS]; | |
621a5f7a | 594 | bool fake_inject_ue; |
38ced28b | 595 | u16 fake_inject_count; |
ddeb3547 | 596 | }; |
bc9ad9e4 | 597 | |
c498afaf RR |
598 | #define mci_for_each_dimm(mci, dimm) \ |
599 | for ((dimm) = (mci)->dimms[0]; \ | |
600 | (dimm); \ | |
601 | (dimm) = (dimm)->idx + 1 < (mci)->tot_dimms \ | |
602 | ? (mci)->dimms[(dimm)->idx + 1] \ | |
603 | : NULL) | |
604 | ||
bc9ad9e4 RR |
605 | /** |
606 | * edac_get_dimm_by_index - Get DIMM info at @index from a memory | |
607 | * controller | |
608 | * | |
609 | * @mci: MC descriptor struct mem_ctl_info | |
610 | * @index: index in the memory controller's DIMM array | |
611 | * | |
612 | * Returns a struct dimm_info * or NULL on failure. | |
613 | */ | |
614 | static inline struct dimm_info * | |
615 | edac_get_dimm_by_index(struct mem_ctl_info *mci, int index) | |
616 | { | |
617 | if (index < 0 || index >= mci->tot_dimms) | |
618 | return NULL; | |
619 | ||
977b1ce7 RR |
620 | if (WARN_ON_ONCE(mci->dimms[index]->idx != index)) |
621 | return NULL; | |
622 | ||
bc9ad9e4 RR |
623 | return mci->dimms[index]; |
624 | } | |
625 | ||
626 | /** | |
627 | * edac_get_dimm - Get DIMM info from a memory controller given by | |
628 | * [layer0,layer1,layer2] position | |
629 | * | |
630 | * @mci: MC descriptor struct mem_ctl_info | |
631 | * @layer0: layer0 position | |
632 | * @layer1: layer1 position. Unused if n_layers < 2 | |
633 | * @layer2: layer2 position. Unused if n_layers < 3 | |
634 | * | |
635 | * For 1 layer, this function returns "dimms[layer0]"; | |
636 | * | |
637 | * For 2 layers, this function is similar to allocating a two-dimensional | |
638 | * array and returning "dimms[layer0][layer1]"; | |
639 | * | |
640 | * For 3 layers, this function is similar to allocating a tri-dimensional | |
641 | * array and returning "dimms[layer0][layer1][layer2]"; | |
642 | */ | |
643 | static inline struct dimm_info *edac_get_dimm(struct mem_ctl_info *mci, | |
644 | int layer0, int layer1, int layer2) | |
645 | { | |
646 | int index; | |
647 | ||
648 | if (layer0 < 0 | |
649 | || (mci->n_layers > 1 && layer1 < 0) | |
650 | || (mci->n_layers > 2 && layer2 < 0)) | |
651 | return NULL; | |
652 | ||
653 | index = layer0; | |
654 | ||
655 | if (mci->n_layers > 1) | |
656 | index = index * mci->layers[1].size + layer1; | |
657 | ||
658 | if (mci->n_layers > 2) | |
659 | index = index * mci->layers[2].size + layer2; | |
660 | ||
661 | return edac_get_dimm_by_index(mci, index); | |
662 | } | |
663 | #endif /* _LINUX_EDAC_H_ */ |