blob: c6f359a85207e24552baac189270cb3702173b51 [file] [log] [blame]
Doug Thompsoncfe40fd2009-05-04 19:25:34 +02001/*
2 * AMD64 class Memory Controller kernel module
3 *
4 * Copyright (c) 2009 SoftwareBitMaker.
5 * Copyright (c) 2009 Advanced Micro Devices, Inc.
6 *
7 * This file may be distributed under the terms of the
8 * GNU General Public License.
9 *
10 * Originally Written by Thayne Harbaugh
11 *
12 * Changes by Douglas "norsk" Thompson <dougthompson@xmission.com>:
13 * - K8 CPU Revision D and greater support
14 *
15 * Changes by Dave Peterson <dsp@llnl.gov> <dave_peterson@pobox.com>:
16 * - Module largely rewritten, with new (and hopefully correct)
17 * code for dealing with node and chip select interleaving,
18 * various code cleanup, and bug fixes
19 * - Added support for memory hoisting using DRAM hole address
20 * register
21 *
22 * Changes by Douglas "norsk" Thompson <dougthompson@xmission.com>:
23 * -K8 Rev (1207) revision support added, required Revision
24 * specific mini-driver code to support Rev F as well as
25 * prior revisions
26 *
27 * Changes by Douglas "norsk" Thompson <dougthompson@xmission.com>:
28 * -Family 10h revision support added. New PCI Device IDs,
29 * indicating new changes. Actual registers modified
30 * were slight, less than the Rev E to Rev F transition
31 * but changing the PCI Device ID was the proper thing to
32 * do, as it provides for almost automactic family
33 * detection. The mods to Rev F required more family
34 * information detection.
35 *
36 * Changes/Fixes by Borislav Petkov <borislav.petkov@amd.com>:
37 * - misc fixes and code cleanups
38 *
39 * This module is based on the following documents
40 * (available from http://www.amd.com/):
41 *
42 * Title: BIOS and Kernel Developer's Guide for AMD Athlon 64 and AMD
43 * Opteron Processors
44 * AMD publication #: 26094
45 *` Revision: 3.26
46 *
47 * Title: BIOS and Kernel Developer's Guide for AMD NPT Family 0Fh
48 * Processors
49 * AMD publication #: 32559
50 * Revision: 3.00
51 * Issue Date: May 2006
52 *
53 * Title: BIOS and Kernel Developer's Guide (BKDG) For AMD Family 10h
54 * Processors
55 * AMD publication #: 31116
56 * Revision: 3.00
57 * Issue Date: September 07, 2007
58 *
59 * Sections in the first 2 documents are no longer in sync with each other.
60 * The Family 10h BKDG was totally re-written from scratch with a new
61 * presentation model.
62 * Therefore, comments that refer to a Document section might be off.
63 */
64
65#include <linux/module.h>
66#include <linux/ctype.h>
67#include <linux/init.h>
68#include <linux/pci.h>
69#include <linux/pci_ids.h>
70#include <linux/slab.h>
71#include <linux/mmzone.h>
72#include <linux/edac.h>
Doug Thompsonf9431992009-04-27 19:46:08 +020073#include <asm/msr.h>
Doug Thompsoncfe40fd2009-05-04 19:25:34 +020074#include "edac_core.h"
Borislav Petkovb70ef012009-06-25 19:32:38 +020075#include "edac_mce_amd.h"
Doug Thompsoncfe40fd2009-05-04 19:25:34 +020076
77#define amd64_printk(level, fmt, arg...) \
78 edac_printk(level, "amd64", fmt, ##arg)
79
80#define amd64_mc_printk(mci, level, fmt, arg...) \
81 edac_mc_chipset_printk(mci, level, "amd64", fmt, ##arg)
82
83/*
84 * Throughout the comments in this code, the following terms are used:
85 *
86 * SysAddr, DramAddr, and InputAddr
87 *
88 * These terms come directly from the amd64 documentation
89 * (AMD publication #26094). They are defined as follows:
90 *
91 * SysAddr:
92 * This is a physical address generated by a CPU core or a device
93 * doing DMA. If generated by a CPU core, a SysAddr is the result of
94 * a virtual to physical address translation by the CPU core's address
95 * translation mechanism (MMU).
96 *
97 * DramAddr:
98 * A DramAddr is derived from a SysAddr by subtracting an offset that
99 * depends on which node the SysAddr maps to and whether the SysAddr
100 * is within a range affected by memory hoisting. The DRAM Base
101 * (section 3.4.4.1) and DRAM Limit (section 3.4.4.2) registers
102 * determine which node a SysAddr maps to.
103 *
104 * If the DRAM Hole Address Register (DHAR) is enabled and the SysAddr
105 * is within the range of addresses specified by this register, then
106 * a value x from the DHAR is subtracted from the SysAddr to produce a
107 * DramAddr. Here, x represents the base address for the node that
108 * the SysAddr maps to plus an offset due to memory hoisting. See
109 * section 3.4.8 and the comments in amd64_get_dram_hole_info() and
110 * sys_addr_to_dram_addr() below for more information.
111 *
112 * If the SysAddr is not affected by the DHAR then a value y is
113 * subtracted from the SysAddr to produce a DramAddr. Here, y is the
114 * base address for the node that the SysAddr maps to. See section
115 * 3.4.4 and the comments in sys_addr_to_dram_addr() below for more
116 * information.
117 *
118 * InputAddr:
119 * A DramAddr is translated to an InputAddr before being passed to the
120 * memory controller for the node that the DramAddr is associated
121 * with. The memory controller then maps the InputAddr to a csrow.
122 * If node interleaving is not in use, then the InputAddr has the same
123 * value as the DramAddr. Otherwise, the InputAddr is produced by
124 * discarding the bits used for node interleaving from the DramAddr.
125 * See section 3.4.4 for more information.
126 *
127 * The memory controller for a given node uses its DRAM CS Base and
128 * DRAM CS Mask registers to map an InputAddr to a csrow. See
129 * sections 3.5.4 and 3.5.5 for more information.
130 */
131
132#define EDAC_AMD64_VERSION " Ver: 3.2.0 " __DATE__
133#define EDAC_MOD_STR "amd64_edac"
134
Borislav Petkov3011b202009-09-21 13:23:34 +0200135#define EDAC_MAX_NUMNODES 8
136
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200137/* Extended Model from CPUID, for CPU Revision numbers */
138#define OPTERON_CPU_LE_REV_C 0
139#define OPTERON_CPU_REV_D 1
140#define OPTERON_CPU_REV_E 2
141
142/* NPT processors have the following Extended Models */
143#define OPTERON_CPU_REV_F 4
144#define OPTERON_CPU_REV_FA 5
145
146/* Hardware limit on ChipSelect rows per MC and processors per system */
Borislav Petkov9d858bb2009-09-21 14:35:51 +0200147#define MAX_CS_COUNT 8
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200148#define DRAM_REG_COUNT 8
149
150
151/*
152 * PCI-defined configuration space registers
153 */
154
155
156/*
157 * Function 1 - Address Map
158 */
159#define K8_DRAM_BASE_LOW 0x40
160#define K8_DRAM_LIMIT_LOW 0x44
161#define K8_DHAR 0xf0
162
163#define DHAR_VALID BIT(0)
164#define F10_DRAM_MEM_HOIST_VALID BIT(1)
165
166#define DHAR_BASE_MASK 0xff000000
167#define dhar_base(dhar) (dhar & DHAR_BASE_MASK)
168
169#define K8_DHAR_OFFSET_MASK 0x0000ff00
170#define k8_dhar_offset(dhar) ((dhar & K8_DHAR_OFFSET_MASK) << 16)
171
172#define F10_DHAR_OFFSET_MASK 0x0000ff80
173 /* NOTE: Extra mask bit vs K8 */
174#define f10_dhar_offset(dhar) ((dhar & F10_DHAR_OFFSET_MASK) << 16)
175
176
177/* F10 High BASE/LIMIT registers */
178#define F10_DRAM_BASE_HIGH 0x140
179#define F10_DRAM_LIMIT_HIGH 0x144
180
181
182/*
183 * Function 2 - DRAM controller
184 */
185#define K8_DCSB0 0x40
186#define F10_DCSB1 0x140
187
188#define K8_DCSB_CS_ENABLE BIT(0)
189#define K8_DCSB_NPT_SPARE BIT(1)
190#define K8_DCSB_NPT_TESTFAIL BIT(2)
191
192/*
193 * REV E: select [31:21] and [15:9] from DCSB and the shift amount to form
194 * the address
195 */
196#define REV_E_DCSB_BASE_BITS (0xFFE0FE00ULL)
197#define REV_E_DCS_SHIFT 4
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200198
199#define REV_F_F1Xh_DCSB_BASE_BITS (0x1FF83FE0ULL)
200#define REV_F_F1Xh_DCS_SHIFT 8
201
202/*
203 * REV F and later: selects [28:19] and [13:5] from DCSB and the shift amount
204 * to form the address
205 */
206#define REV_F_DCSB_BASE_BITS (0x1FF83FE0ULL)
207#define REV_F_DCS_SHIFT 8
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200208
209/* DRAM CS Mask Registers */
210#define K8_DCSM0 0x60
211#define F10_DCSM1 0x160
212
213/* REV E: select [29:21] and [15:9] from DCSM */
214#define REV_E_DCSM_MASK_BITS 0x3FE0FE00
215
216/* unused bits [24:20] and [12:0] */
217#define REV_E_DCS_NOTUSED_BITS 0x01F01FFF
218
219/* REV F and later: select [28:19] and [13:5] from DCSM */
220#define REV_F_F1Xh_DCSM_MASK_BITS 0x1FF83FE0
221
222/* unused bits [26:22] and [12:0] */
223#define REV_F_F1Xh_DCS_NOTUSED_BITS 0x07C01FFF
224
225#define DBAM0 0x80
226#define DBAM1 0x180
227
228/* Extract the DIMM 'type' on the i'th DIMM from the DBAM reg value passed */
229#define DBAM_DIMM(i, reg) ((((reg) >> (4*i))) & 0xF)
230
231#define DBAM_MAX_VALUE 11
232
233
234#define F10_DCLR_0 0x90
235#define F10_DCLR_1 0x190
236#define REVE_WIDTH_128 BIT(16)
237#define F10_WIDTH_128 BIT(11)
238
239
240#define F10_DCHR_0 0x94
241#define F10_DCHR_1 0x194
242
243#define F10_DCHR_FOUR_RANK_DIMM BIT(18)
244#define F10_DCHR_Ddr3Mode BIT(8)
245#define F10_DCHR_MblMode BIT(6)
246
247
248#define F10_DCTL_SEL_LOW 0x110
249
250#define dct_sel_baseaddr(pvt) \
251 ((pvt->dram_ctl_select_low) & 0xFFFFF800)
252
253#define dct_sel_interleave_addr(pvt) \
254 (((pvt->dram_ctl_select_low) >> 6) & 0x3)
255
256enum {
257 F10_DCTL_SEL_LOW_DctSelHiRngEn = BIT(0),
258 F10_DCTL_SEL_LOW_DctSelIntLvEn = BIT(2),
259 F10_DCTL_SEL_LOW_DctGangEn = BIT(4),
260 F10_DCTL_SEL_LOW_DctDatIntLv = BIT(5),
261 F10_DCTL_SEL_LOW_DramEnable = BIT(8),
262 F10_DCTL_SEL_LOW_MemCleared = BIT(10),
263};
264
265#define dct_high_range_enabled(pvt) \
266 (pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctSelHiRngEn)
267
268#define dct_interleave_enabled(pvt) \
269 (pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctSelIntLvEn)
270
271#define dct_ganging_enabled(pvt) \
272 (pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctGangEn)
273
274#define dct_data_intlv_enabled(pvt) \
275 (pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DctDatIntLv)
276
277#define dct_dram_enabled(pvt) \
278 (pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_DramEnable)
279
280#define dct_memory_cleared(pvt) \
281 (pvt->dram_ctl_select_low & F10_DCTL_SEL_LOW_MemCleared)
282
283
284#define F10_DCTL_SEL_HIGH 0x114
285
286
287/*
288 * Function 3 - Misc Control
289 */
290#define K8_NBCTL 0x40
291
292/* Correctable ECC error reporting enable */
293#define K8_NBCTL_CECCEn BIT(0)
294
295/* UnCorrectable ECC error reporting enable */
296#define K8_NBCTL_UECCEn BIT(1)
297
298#define K8_NBCFG 0x44
299#define K8_NBCFG_CHIPKILL BIT(23)
300#define K8_NBCFG_ECC_ENABLE BIT(22)
301
302#define K8_NBSL 0x48
303
304
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200305/* Family F10h: Normalized Extended Error Codes */
306#define F10_NBSL_EXT_ERR_RES 0x0
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200307#define F10_NBSL_EXT_ERR_ECC 0x8
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200308
309/* Next two are overloaded values */
310#define F10_NBSL_EXT_ERR_LINK_PROTO 0xB
311#define F10_NBSL_EXT_ERR_L3_PROTO 0xB
312
313#define F10_NBSL_EXT_ERR_NB_ARRAY 0xC
314#define F10_NBSL_EXT_ERR_DRAM_PARITY 0xD
315#define F10_NBSL_EXT_ERR_LINK_RETRY 0xE
316
317/* Next two are overloaded values */
318#define F10_NBSL_EXT_ERR_GART_WALK 0xF
319#define F10_NBSL_EXT_ERR_DEV_WALK 0xF
320
321/* 0x10 to 0x1B: Reserved */
322#define F10_NBSL_EXT_ERR_L3_DATA 0x1C
323#define F10_NBSL_EXT_ERR_L3_TAG 0x1D
324#define F10_NBSL_EXT_ERR_L3_LRU 0x1E
325
326/* K8: Normalized Extended Error Codes */
327#define K8_NBSL_EXT_ERR_ECC 0x0
328#define K8_NBSL_EXT_ERR_CRC 0x1
329#define K8_NBSL_EXT_ERR_SYNC 0x2
330#define K8_NBSL_EXT_ERR_MST 0x3
331#define K8_NBSL_EXT_ERR_TGT 0x4
332#define K8_NBSL_EXT_ERR_GART 0x5
333#define K8_NBSL_EXT_ERR_RMW 0x6
334#define K8_NBSL_EXT_ERR_WDT 0x7
335#define K8_NBSL_EXT_ERR_CHIPKILL_ECC 0x8
336#define K8_NBSL_EXT_ERR_DRAM_PARITY 0xD
337
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200338/*
339 * The following are for BUS type errors AFTER values have been normalized by
340 * shifting right
341 */
342#define K8_NBSL_PP_SRC 0x0
343#define K8_NBSL_PP_RES 0x1
344#define K8_NBSL_PP_OBS 0x2
345#define K8_NBSL_PP_GENERIC 0x3
346
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200347#define EXTRACT_ERR_CPU_MAP(x) ((x) & 0xF)
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200348
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200349#define K8_NBEAL 0x50
350#define K8_NBEAH 0x54
351#define K8_SCRCTRL 0x58
352
353#define F10_NB_CFG_LOW 0x88
354#define F10_NB_CFG_LOW_ENABLE_EXT_CFG BIT(14)
355
356#define F10_NB_CFG_HIGH 0x8C
357
358#define F10_ONLINE_SPARE 0xB0
359#define F10_ONLINE_SPARE_SWAPDONE0(x) ((x) & BIT(1))
360#define F10_ONLINE_SPARE_SWAPDONE1(x) ((x) & BIT(3))
361#define F10_ONLINE_SPARE_BADDRAM_CS0(x) (((x) >> 4) & 0x00000007)
362#define F10_ONLINE_SPARE_BADDRAM_CS1(x) (((x) >> 8) & 0x00000007)
363
364#define F10_NB_ARRAY_ADDR 0xB8
365
366#define F10_NB_ARRAY_DRAM_ECC 0x80000000
367
368/* Bits [2:1] are used to select 16-byte section within a 64-byte cacheline */
369#define SET_NB_ARRAY_ADDRESS(section) (((section) & 0x3) << 1)
370
371#define F10_NB_ARRAY_DATA 0xBC
372
373#define SET_NB_DRAM_INJECTION_WRITE(word, bits) \
374 (BIT(((word) & 0xF) + 20) | \
Borislav Petkov94baaee2009-09-24 11:05:30 +0200375 BIT(17) | bits)
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200376
377#define SET_NB_DRAM_INJECTION_READ(word, bits) \
378 (BIT(((word) & 0xF) + 20) | \
Borislav Petkov94baaee2009-09-24 11:05:30 +0200379 BIT(16) | bits)
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200380
381#define K8_NBCAP 0xE8
382#define K8_NBCAP_CORES (BIT(12)|BIT(13))
383#define K8_NBCAP_CHIPKILL BIT(4)
384#define K8_NBCAP_SECDED BIT(3)
385#define K8_NBCAP_8_NODE BIT(2)
386#define K8_NBCAP_DUAL_NODE BIT(1)
387#define K8_NBCAP_DCT_DUAL BIT(0)
388
389/*
390 * MSR Regs
391 */
392#define K8_MSR_MCGCTL 0x017b
393#define K8_MSR_MCGCTL_NBE BIT(4)
394
395#define K8_MSR_MC4CTL 0x0410
396#define K8_MSR_MC4STAT 0x0411
397#define K8_MSR_MC4ADDR 0x0412
398
399/* AMD sets the first MC device at device ID 0x18. */
Borislav Petkov37da0452009-06-10 17:36:57 +0200400static inline int get_node_id(struct pci_dev *pdev)
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200401{
402 return PCI_SLOT(pdev->devfn) - 0x18;
403}
404
405enum amd64_chipset_families {
406 K8_CPUS = 0,
407 F10_CPUS,
408 F11_CPUS,
409};
410
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200411/* Error injection control structure */
412struct error_injection {
413 u32 section;
414 u32 word;
415 u32 bit_map;
416};
417
418struct amd64_pvt {
419 /* pci_device handles which we utilize */
420 struct pci_dev *addr_f1_ctl;
421 struct pci_dev *dram_f2_ctl;
422 struct pci_dev *misc_f3_ctl;
423
424 int mc_node_id; /* MC index of this MC node */
425 int ext_model; /* extended model value of this node */
426
427 struct low_ops *ops; /* pointer to per PCI Device ID func table */
428
429 int channel_count;
430
431 /* Raw registers */
432 u32 dclr0; /* DRAM Configuration Low DCT0 reg */
433 u32 dclr1; /* DRAM Configuration Low DCT1 reg */
434 u32 dchr0; /* DRAM Configuration High DCT0 reg */
435 u32 dchr1; /* DRAM Configuration High DCT1 reg */
436 u32 nbcap; /* North Bridge Capabilities */
437 u32 nbcfg; /* F10 North Bridge Configuration */
438 u32 ext_nbcfg; /* Extended F10 North Bridge Configuration */
439 u32 dhar; /* DRAM Hoist reg */
440 u32 dbam0; /* DRAM Base Address Mapping reg for DCT0 */
441 u32 dbam1; /* DRAM Base Address Mapping reg for DCT1 */
442
443 /* DRAM CS Base Address Registers F2x[1,0][5C:40] */
Borislav Petkov9d858bb2009-09-21 14:35:51 +0200444 u32 dcsb0[MAX_CS_COUNT];
445 u32 dcsb1[MAX_CS_COUNT];
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200446
447 /* DRAM CS Mask Registers F2x[1,0][6C:60] */
Borislav Petkov9d858bb2009-09-21 14:35:51 +0200448 u32 dcsm0[MAX_CS_COUNT];
449 u32 dcsm1[MAX_CS_COUNT];
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200450
451 /*
452 * Decoded parts of DRAM BASE and LIMIT Registers
453 * F1x[78,70,68,60,58,50,48,40]
454 */
455 u64 dram_base[DRAM_REG_COUNT];
456 u64 dram_limit[DRAM_REG_COUNT];
457 u8 dram_IntlvSel[DRAM_REG_COUNT];
458 u8 dram_IntlvEn[DRAM_REG_COUNT];
459 u8 dram_DstNode[DRAM_REG_COUNT];
460 u8 dram_rw_en[DRAM_REG_COUNT];
461
462 /*
463 * The following fields are set at (load) run time, after CPU revision
464 * has been determined, since the dct_base and dct_mask registers vary
465 * based on revision
466 */
467 u32 dcsb_base; /* DCSB base bits */
468 u32 dcsm_mask; /* DCSM mask bits */
Borislav Petkov9d858bb2009-09-21 14:35:51 +0200469 u32 cs_count; /* num chip selects (== num DCSB registers) */
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200470 u32 num_dcsm; /* Number of DCSM registers */
471 u32 dcs_mask_notused; /* DCSM notused mask bits */
472 u32 dcs_shift; /* DCSB and DCSM shift value */
473
474 u64 top_mem; /* top of memory below 4GB */
475 u64 top_mem2; /* top of memory above 4GB */
476
477 u32 dram_ctl_select_low; /* DRAM Controller Select Low Reg */
478 u32 dram_ctl_select_high; /* DRAM Controller Select High Reg */
479 u32 online_spare; /* On-Line spare Reg */
480
481 /* temp storage for when input is received from sysfs */
Borislav Petkovef44cc42009-07-23 14:45:48 +0200482 struct err_regs ctl_error_info;
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200483
484 /* place to store error injection parameters prior to issue */
485 struct error_injection injection;
486
487 /* Save old hw registers' values before we modified them */
488 u32 nbctl_mcgctl_saved; /* When true, following 2 are valid */
489 u32 old_nbctl;
Doug Thompsonf9431992009-04-27 19:46:08 +0200490 unsigned long old_mcgctl; /* per core on this node */
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200491
492 /* MC Type Index value: socket F vs Family 10h */
493 u32 mc_type_index;
494
495 /* misc settings */
496 struct flags {
497 unsigned long cf8_extcfg:1;
498 } flags;
499};
500
501struct scrubrate {
502 u32 scrubval; /* bit pattern for scrub rate */
503 u32 bandwidth; /* bandwidth consumed (bytes/sec) */
504};
505
506extern struct scrubrate scrubrates[23];
507extern u32 revf_quad_ddr2_shift[16];
508extern const char *tt_msgs[4];
509extern const char *ll_msgs[4];
510extern const char *rrrr_msgs[16];
511extern const char *to_msgs[2];
512extern const char *pp_msgs[4];
513extern const char *ii_msgs[4];
514extern const char *ext_msgs[32];
515extern const char *htlink_msgs[8];
516
Doug Thompson7d6034d2009-04-27 20:01:01 +0200517#ifdef CONFIG_EDAC_DEBUG
518#define NUM_DBG_ATTRS 9
519#else
520#define NUM_DBG_ATTRS 0
521#endif
522
523#ifdef CONFIG_EDAC_AMD64_ERROR_INJECTION
524#define NUM_INJ_ATTRS 5
525#else
526#define NUM_INJ_ATTRS 0
527#endif
528
529extern struct mcidev_sysfs_attribute amd64_dbg_attrs[NUM_DBG_ATTRS],
530 amd64_inj_attrs[NUM_INJ_ATTRS];
531
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200532/*
533 * Each of the PCI Device IDs types have their own set of hardware accessor
534 * functions and per device encoding/decoding logic.
535 */
536struct low_ops {
537 int (*probe_valid_hardware)(struct amd64_pvt *pvt);
538 int (*early_channel_count)(struct amd64_pvt *pvt);
539
540 u64 (*get_error_address)(struct mem_ctl_info *mci,
Borislav Petkovef44cc42009-07-23 14:45:48 +0200541 struct err_regs *info);
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200542 void (*read_dram_base_limit)(struct amd64_pvt *pvt, int dram);
543 void (*read_dram_ctl_register)(struct amd64_pvt *pvt);
544 void (*map_sysaddr_to_csrow)(struct mem_ctl_info *mci,
Borislav Petkovef44cc42009-07-23 14:45:48 +0200545 struct err_regs *info,
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200546 u64 SystemAddr);
547 int (*dbam_map_to_pages)(struct amd64_pvt *pvt, int dram_map);
548};
549
550struct amd64_family_type {
551 const char *ctl_name;
552 u16 addr_f1_ctl;
553 u16 misc_f3_ctl;
554 struct low_ops ops;
555};
556
557static struct amd64_family_type amd64_family_types[];
558
559static inline const char *get_amd_family_name(int index)
560{
561 return amd64_family_types[index].ctl_name;
562}
563
564static inline struct low_ops *family_ops(int index)
565{
566 return &amd64_family_types[index].ops;
567}
568
569/*
570 * For future CPU versions, verify the following as new 'slow' rates appear and
571 * modify the necessary skip values for the supported CPU.
572 */
573#define K8_MIN_SCRUB_RATE_BITS 0x0
574#define F10_MIN_SCRUB_RATE_BITS 0x5
575#define F11_MIN_SCRUB_RATE_BITS 0x6
576
Doug Thompsoncfe40fd2009-05-04 19:25:34 +0200577int amd64_get_dram_hole_info(struct mem_ctl_info *mci, u64 *hole_base,
578 u64 *hole_offset, u64 *hole_size);