Commit | Line | Data |
---|---|---|
2025cf9e | 1 | // SPDX-License-Identifier: GPL-2.0-only |
5c71ad17 TL |
2 | /* |
3 | * Driver for Pondicherry2 memory controller. | |
4 | * | |
5 | * Copyright (c) 2016, Intel Corporation. | |
6 | * | |
5c71ad17 TL |
7 | * [Derived from sb_edac.c] |
8 | * | |
9 | * Translation of system physical addresses to DIMM addresses | |
10 | * is a two stage process: | |
11 | * | |
12 | * First the Pondicherry 2 memory controller handles slice and channel interleaving | |
13 | * in "sys2pmi()". This is (almost) completley common between platforms. | |
14 | * | |
15 | * Then a platform specific dunit (DIMM unit) completes the process to provide DIMM, | |
16 | * rank, bank, row and column using the appropriate "dunit_ops" functions/parameters. | |
17 | */ | |
18 | ||
a69badad | 19 | #include <linux/bitmap.h> |
5c71ad17 TL |
20 | #include <linux/delay.h> |
21 | #include <linux/edac.h> | |
a69badad AS |
22 | #include <linux/init.h> |
23 | #include <linux/math64.h> | |
5c71ad17 | 24 | #include <linux/mmzone.h> |
a69badad AS |
25 | #include <linux/mod_devicetable.h> |
26 | #include <linux/module.h> | |
27 | #include <linux/pci.h> | |
28 | #include <linux/pci_ids.h> | |
a50cc8de | 29 | #include <linux/sizes.h> |
a69badad | 30 | #include <linux/slab.h> |
5c71ad17 | 31 | #include <linux/smp.h> |
a69badad | 32 | |
7b2db704 AS |
33 | #include <linux/platform_data/x86/p2sb.h> |
34 | ||
5c71ad17 TL |
35 | #include <asm/cpu_device_id.h> |
36 | #include <asm/intel-family.h> | |
37 | #include <asm/processor.h> | |
38 | #include <asm/mce.h> | |
39 | ||
40 | #include "edac_mc.h" | |
41 | #include "edac_module.h" | |
42 | #include "pnd2_edac.h" | |
43 | ||
301375e7 TK |
44 | #define EDAC_MOD_STR "pnd2_edac" |
45 | ||
5c71ad17 TL |
46 | #define APL_NUM_CHANNELS 4 |
47 | #define DNV_NUM_CHANNELS 2 | |
48 | #define DNV_MAX_DIMMS 2 /* Max DIMMs per channel */ | |
49 | ||
50 | enum type { | |
51 | APL, | |
52 | DNV, /* All requests go to PMI CH0 on each slice (CH1 disabled) */ | |
53 | }; | |
54 | ||
55 | struct dram_addr { | |
56 | int chan; | |
57 | int dimm; | |
58 | int rank; | |
59 | int bank; | |
60 | int row; | |
61 | int col; | |
62 | }; | |
63 | ||
64 | struct pnd2_pvt { | |
65 | int dimm_geom[APL_NUM_CHANNELS]; | |
66 | u64 tolm, tohm; | |
67 | }; | |
68 | ||
69 | /* | |
70 | * System address space is divided into multiple regions with | |
71 | * different interleave rules in each. The as0/as1 regions | |
72 | * have no interleaving at all. The as2 region is interleaved | |
73 | * between two channels. The mot region is magic and may overlap | |
74 | * other regions, with its interleave rules taking precedence. | |
75 | * Addresses not in any of these regions are interleaved across | |
76 | * all four channels. | |
77 | */ | |
78 | static struct region { | |
79 | u64 base; | |
80 | u64 limit; | |
81 | u8 enabled; | |
82 | } mot, as0, as1, as2; | |
83 | ||
84 | static struct dunit_ops { | |
85 | char *name; | |
86 | enum type type; | |
87 | int pmiaddr_shift; | |
88 | int pmiidx_shift; | |
89 | int channels; | |
90 | int dimms_per_channel; | |
91 | int (*rd_reg)(int port, int off, int op, void *data, size_t sz, char *name); | |
92 | int (*get_registers)(void); | |
93 | int (*check_ecc)(void); | |
94 | void (*mk_region)(char *name, struct region *rp, void *asym); | |
95 | void (*get_dimm_config)(struct mem_ctl_info *mci); | |
96 | int (*pmi2mem)(struct mem_ctl_info *mci, u64 pmiaddr, u32 pmiidx, | |
97 | struct dram_addr *daddr, char *msg); | |
98 | } *ops; | |
99 | ||
100 | static struct mem_ctl_info *pnd2_mci; | |
101 | ||
102 | #define PND2_MSG_SIZE 256 | |
103 | ||
104 | /* Debug macros */ | |
105 | #define pnd2_printk(level, fmt, arg...) \ | |
106 | edac_printk(level, "pnd2", fmt, ##arg) | |
107 | ||
108 | #define pnd2_mc_printk(mci, level, fmt, arg...) \ | |
109 | edac_mc_chipset_printk(mci, level, "pnd2", fmt, ##arg) | |
110 | ||
111 | #define MOT_CHAN_INTLV_BIT_1SLC_2CH 12 | |
112 | #define MOT_CHAN_INTLV_BIT_2SLC_2CH 13 | |
113 | #define SELECTOR_DISABLED (-1) | |
5c71ad17 TL |
114 | |
115 | #define PMI_ADDRESS_WIDTH 31 | |
116 | #define PND_MAX_PHYS_BIT 39 | |
117 | ||
118 | #define APL_ASYMSHIFT 28 | |
119 | #define DNV_ASYMSHIFT 31 | |
120 | #define CH_HASH_MASK_LSB 6 | |
121 | #define SLICE_HASH_MASK_LSB 6 | |
122 | #define MOT_SLC_INTLV_BIT 12 | |
123 | #define LOG2_PMI_ADDR_GRANULARITY 5 | |
124 | #define MOT_SHIFT 24 | |
125 | ||
126 | #define GET_BITFIELD(v, lo, hi) (((v) & GENMASK_ULL(hi, lo)) >> (lo)) | |
127 | #define U64_LSHIFT(val, s) ((u64)(val) << (s)) | |
128 | ||
3e5d2bd1 TL |
129 | /* |
130 | * On Apollo Lake we access memory controller registers via a | |
131 | * side-band mailbox style interface in a hidden PCI device | |
132 | * configuration space. | |
133 | */ | |
134 | static struct pci_bus *p2sb_bus; | |
135 | #define P2SB_DEVFN PCI_DEVFN(0xd, 0) | |
136 | #define P2SB_ADDR_OFF 0xd0 | |
137 | #define P2SB_DATA_OFF 0xd4 | |
138 | #define P2SB_STAT_OFF 0xd8 | |
139 | #define P2SB_ROUT_OFF 0xda | |
140 | #define P2SB_EADD_OFF 0xdc | |
141 | #define P2SB_HIDE_OFF 0xe1 | |
142 | ||
143 | #define P2SB_BUSY 1 | |
144 | ||
145 | #define P2SB_READ(size, off, ptr) \ | |
146 | pci_bus_read_config_##size(p2sb_bus, P2SB_DEVFN, off, ptr) | |
147 | #define P2SB_WRITE(size, off, val) \ | |
148 | pci_bus_write_config_##size(p2sb_bus, P2SB_DEVFN, off, val) | |
149 | ||
150 | static bool p2sb_is_busy(u16 *status) | |
5c71ad17 | 151 | { |
3e5d2bd1 | 152 | P2SB_READ(word, P2SB_STAT_OFF, status); |
5c71ad17 | 153 | |
3e5d2bd1 TL |
154 | return !!(*status & P2SB_BUSY); |
155 | } | |
5c71ad17 | 156 | |
3e5d2bd1 TL |
157 | static int _apl_rd_reg(int port, int off, int op, u32 *data) |
158 | { | |
159 | int retries = 0xff, ret; | |
160 | u16 status; | |
bc8f10ba | 161 | u8 hidden; |
3e5d2bd1 | 162 | |
bc8f10ba QZ |
163 | /* Unhide the P2SB device, if it's hidden */ |
164 | P2SB_READ(byte, P2SB_HIDE_OFF, &hidden); | |
165 | if (hidden) | |
166 | P2SB_WRITE(byte, P2SB_HIDE_OFF, 0); | |
3e5d2bd1 TL |
167 | |
168 | if (p2sb_is_busy(&status)) { | |
169 | ret = -EAGAIN; | |
170 | goto out; | |
171 | } | |
5c71ad17 | 172 | |
3e5d2bd1 TL |
173 | P2SB_WRITE(dword, P2SB_ADDR_OFF, (port << 24) | off); |
174 | P2SB_WRITE(dword, P2SB_DATA_OFF, 0); | |
175 | P2SB_WRITE(dword, P2SB_EADD_OFF, 0); | |
176 | P2SB_WRITE(word, P2SB_ROUT_OFF, 0); | |
177 | P2SB_WRITE(word, P2SB_STAT_OFF, (op << 8) | P2SB_BUSY); | |
5c71ad17 | 178 | |
3e5d2bd1 TL |
179 | while (p2sb_is_busy(&status)) { |
180 | if (retries-- == 0) { | |
181 | ret = -EBUSY; | |
182 | goto out; | |
183 | } | |
184 | } | |
5c71ad17 | 185 | |
3e5d2bd1 | 186 | P2SB_READ(dword, P2SB_DATA_OFF, data); |
530258f8 | 187 | ret = (status >> 1) & GENMASK(1, 0); |
3e5d2bd1 | 188 | out: |
bc8f10ba QZ |
189 | /* Hide the P2SB device, if it was hidden before */ |
190 | if (hidden) | |
191 | P2SB_WRITE(byte, P2SB_HIDE_OFF, hidden); | |
5c71ad17 TL |
192 | |
193 | return ret; | |
194 | } | |
5c71ad17 TL |
195 | |
196 | static int apl_rd_reg(int port, int off, int op, void *data, size_t sz, char *name) | |
197 | { | |
ee514c7a | 198 | int ret = 0; |
5c71ad17 TL |
199 | |
200 | edac_dbg(2, "Read %s port=%x off=%x op=%x\n", name, port, off, op); | |
201 | switch (sz) { | |
202 | case 8: | |
3e5d2bd1 | 203 | ret = _apl_rd_reg(port, off + 4, op, (u32 *)(data + 4)); |
df561f66 | 204 | fallthrough; |
5c71ad17 | 205 | case 4: |
3e5d2bd1 | 206 | ret |= _apl_rd_reg(port, off, op, (u32 *)data); |
5c71ad17 TL |
207 | pnd2_printk(KERN_DEBUG, "%s=%x%08x ret=%d\n", name, |
208 | sz == 8 ? *((u32 *)(data + 4)) : 0, *((u32 *)data), ret); | |
209 | break; | |
210 | } | |
211 | ||
212 | return ret; | |
213 | } | |
214 | ||
215 | static u64 get_mem_ctrl_hub_base_addr(void) | |
216 | { | |
217 | struct b_cr_mchbar_lo_pci lo; | |
218 | struct b_cr_mchbar_hi_pci hi; | |
219 | struct pci_dev *pdev; | |
220 | ||
221 | pdev = pci_get_device(PCI_VENDOR_ID_INTEL, 0x1980, NULL); | |
222 | if (pdev) { | |
223 | pci_read_config_dword(pdev, 0x48, (u32 *)&lo); | |
224 | pci_read_config_dword(pdev, 0x4c, (u32 *)&hi); | |
225 | pci_dev_put(pdev); | |
226 | } else { | |
227 | return 0; | |
228 | } | |
229 | ||
230 | if (!lo.enable) { | |
231 | edac_dbg(2, "MMIO via memory controller hub base address is disabled!\n"); | |
232 | return 0; | |
233 | } | |
234 | ||
235 | return U64_LSHIFT(hi.base, 32) | U64_LSHIFT(lo.base, 15); | |
236 | } | |
237 | ||
29a3388b SD |
238 | #define DNV_MCHBAR_SIZE 0x8000 |
239 | #define DNV_SB_PORT_SIZE 0x10000 | |
5c71ad17 TL |
240 | static int dnv_rd_reg(int port, int off, int op, void *data, size_t sz, char *name) |
241 | { | |
242 | struct pci_dev *pdev; | |
6adc32f5 | 243 | void __iomem *base; |
7b2db704 AS |
244 | struct resource r; |
245 | int ret; | |
5c71ad17 TL |
246 | |
247 | if (op == 4) { | |
248 | pdev = pci_get_device(PCI_VENDOR_ID_INTEL, 0x1980, NULL); | |
249 | if (!pdev) | |
250 | return -ENODEV; | |
251 | ||
252 | pci_read_config_dword(pdev, off, data); | |
253 | pci_dev_put(pdev); | |
254 | } else { | |
255 | /* MMIO via memory controller hub base address */ | |
256 | if (op == 0 && port == 0x4c) { | |
7b2db704 AS |
257 | memset(&r, 0, sizeof(r)); |
258 | ||
259 | r.start = get_mem_ctrl_hub_base_addr(); | |
260 | if (!r.start) | |
5c71ad17 | 261 | return -ENODEV; |
7b2db704 | 262 | r.end = r.start + DNV_MCHBAR_SIZE - 1; |
5c71ad17 TL |
263 | } else { |
264 | /* MMIO via sideband register base address */ | |
7b2db704 AS |
265 | ret = p2sb_bar(NULL, 0, &r); |
266 | if (ret) | |
267 | return ret; | |
268 | ||
269 | r.start += (port << 16); | |
270 | r.end = r.start + DNV_SB_PORT_SIZE - 1; | |
5c71ad17 TL |
271 | } |
272 | ||
7b2db704 | 273 | base = ioremap(r.start, resource_size(&r)); |
5c71ad17 TL |
274 | if (!base) |
275 | return -ENODEV; | |
276 | ||
277 | if (sz == 8) | |
6adc32f5 AS |
278 | *(u64 *)data = readq(base + off); |
279 | else | |
280 | *(u32 *)data = readl(base + off); | |
5c71ad17 TL |
281 | |
282 | iounmap(base); | |
283 | } | |
284 | ||
285 | edac_dbg(2, "Read %s=%.8x_%.8x\n", name, | |
286 | (sz == 8) ? *(u32 *)(data + 4) : 0, *(u32 *)data); | |
287 | ||
288 | return 0; | |
289 | } | |
290 | ||
291 | #define RD_REGP(regp, regname, port) \ | |
292 | ops->rd_reg(port, \ | |
293 | regname##_offset, \ | |
294 | regname##_r_opcode, \ | |
295 | regp, sizeof(struct regname), \ | |
296 | #regname) | |
297 | ||
298 | #define RD_REG(regp, regname) \ | |
299 | ops->rd_reg(regname ## _port, \ | |
300 | regname##_offset, \ | |
301 | regname##_r_opcode, \ | |
302 | regp, sizeof(struct regname), \ | |
303 | #regname) | |
304 | ||
305 | static u64 top_lm, top_hm; | |
306 | static bool two_slices; | |
307 | static bool two_channels; /* Both PMI channels in one slice enabled */ | |
308 | ||
309 | static u8 sym_chan_mask; | |
310 | static u8 asym_chan_mask; | |
530258f8 | 311 | static unsigned long chan_mask; |
5c71ad17 TL |
312 | |
313 | static int slice_selector = -1; | |
314 | static int chan_selector = -1; | |
315 | static u64 slice_hash_mask; | |
316 | static u64 chan_hash_mask; | |
317 | ||
318 | static void mk_region(char *name, struct region *rp, u64 base, u64 limit) | |
319 | { | |
320 | rp->enabled = 1; | |
321 | rp->base = base; | |
322 | rp->limit = limit; | |
323 | edac_dbg(2, "Region:%s [%llx, %llx]\n", name, base, limit); | |
324 | } | |
325 | ||
326 | static void mk_region_mask(char *name, struct region *rp, u64 base, u64 mask) | |
327 | { | |
328 | if (mask == 0) { | |
329 | pr_info(FW_BUG "MOT mask cannot be zero\n"); | |
330 | return; | |
331 | } | |
332 | if (mask != GENMASK_ULL(PND_MAX_PHYS_BIT, __ffs(mask))) { | |
f1b0b116 | 333 | pr_info(FW_BUG "MOT mask is invalid\n"); |
5c71ad17 TL |
334 | return; |
335 | } | |
336 | if (base & ~mask) { | |
337 | pr_info(FW_BUG "MOT region base/mask alignment error\n"); | |
338 | return; | |
339 | } | |
340 | rp->base = base; | |
341 | rp->limit = (base | ~mask) & GENMASK_ULL(PND_MAX_PHYS_BIT, 0); | |
342 | rp->enabled = 1; | |
343 | edac_dbg(2, "Region:%s [%llx, %llx]\n", name, base, rp->limit); | |
344 | } | |
345 | ||
346 | static bool in_region(struct region *rp, u64 addr) | |
347 | { | |
348 | if (!rp->enabled) | |
349 | return false; | |
350 | ||
351 | return rp->base <= addr && addr <= rp->limit; | |
352 | } | |
353 | ||
354 | static int gen_sym_mask(struct b_cr_slice_channel_hash *p) | |
355 | { | |
356 | int mask = 0; | |
357 | ||
358 | if (!p->slice_0_mem_disabled) | |
359 | mask |= p->sym_slice0_channel_enabled; | |
360 | ||
361 | if (!p->slice_1_disabled) | |
362 | mask |= p->sym_slice1_channel_enabled << 2; | |
363 | ||
364 | if (p->ch_1_disabled || p->enable_pmi_dual_data_mode) | |
365 | mask &= 0x5; | |
366 | ||
367 | return mask; | |
368 | } | |
369 | ||
370 | static int gen_asym_mask(struct b_cr_slice_channel_hash *p, | |
371 | struct b_cr_asym_mem_region0_mchbar *as0, | |
372 | struct b_cr_asym_mem_region1_mchbar *as1, | |
373 | struct b_cr_asym_2way_mem_region_mchbar *as2way) | |
374 | { | |
375 | const int intlv[] = { 0x5, 0xA, 0x3, 0xC }; | |
376 | int mask = 0; | |
377 | ||
378 | if (as2way->asym_2way_interleave_enable) | |
379 | mask = intlv[as2way->asym_2way_intlv_mode]; | |
380 | if (as0->slice0_asym_enable) | |
381 | mask |= (1 << as0->slice0_asym_channel_select); | |
382 | if (as1->slice1_asym_enable) | |
383 | mask |= (4 << as1->slice1_asym_channel_select); | |
384 | if (p->slice_0_mem_disabled) | |
385 | mask &= 0xc; | |
386 | if (p->slice_1_disabled) | |
387 | mask &= 0x3; | |
388 | if (p->ch_1_disabled || p->enable_pmi_dual_data_mode) | |
389 | mask &= 0x5; | |
390 | ||
391 | return mask; | |
392 | } | |
393 | ||
394 | static struct b_cr_tolud_pci tolud; | |
395 | static struct b_cr_touud_lo_pci touud_lo; | |
396 | static struct b_cr_touud_hi_pci touud_hi; | |
397 | static struct b_cr_asym_mem_region0_mchbar asym0; | |
398 | static struct b_cr_asym_mem_region1_mchbar asym1; | |
399 | static struct b_cr_asym_2way_mem_region_mchbar asym_2way; | |
400 | static struct b_cr_mot_out_base_mchbar mot_base; | |
401 | static struct b_cr_mot_out_mask_mchbar mot_mask; | |
402 | static struct b_cr_slice_channel_hash chash; | |
403 | ||
404 | /* Apollo Lake dunit */ | |
405 | /* | |
406 | * Validated on board with just two DIMMs in the [0] and [2] positions | |
407 | * in this array. Other port number matches documentation, but caution | |
408 | * advised. | |
409 | */ | |
410 | static const int apl_dports[APL_NUM_CHANNELS] = { 0x18, 0x10, 0x11, 0x19 }; | |
411 | static struct d_cr_drp0 drp0[APL_NUM_CHANNELS]; | |
412 | ||
413 | /* Denverton dunit */ | |
414 | static const int dnv_dports[DNV_NUM_CHANNELS] = { 0x10, 0x12 }; | |
415 | static struct d_cr_dsch dsch; | |
416 | static struct d_cr_ecc_ctrl ecc_ctrl[DNV_NUM_CHANNELS]; | |
417 | static struct d_cr_drp drp[DNV_NUM_CHANNELS]; | |
418 | static struct d_cr_dmap dmap[DNV_NUM_CHANNELS]; | |
419 | static struct d_cr_dmap1 dmap1[DNV_NUM_CHANNELS]; | |
420 | static struct d_cr_dmap2 dmap2[DNV_NUM_CHANNELS]; | |
421 | static struct d_cr_dmap3 dmap3[DNV_NUM_CHANNELS]; | |
422 | static struct d_cr_dmap4 dmap4[DNV_NUM_CHANNELS]; | |
423 | static struct d_cr_dmap5 dmap5[DNV_NUM_CHANNELS]; | |
424 | ||
425 | static void apl_mk_region(char *name, struct region *rp, void *asym) | |
426 | { | |
427 | struct b_cr_asym_mem_region0_mchbar *a = asym; | |
428 | ||
429 | mk_region(name, rp, | |
430 | U64_LSHIFT(a->slice0_asym_base, APL_ASYMSHIFT), | |
431 | U64_LSHIFT(a->slice0_asym_limit, APL_ASYMSHIFT) + | |
432 | GENMASK_ULL(APL_ASYMSHIFT - 1, 0)); | |
433 | } | |
434 | ||
435 | static void dnv_mk_region(char *name, struct region *rp, void *asym) | |
436 | { | |
437 | struct b_cr_asym_mem_region_denverton *a = asym; | |
438 | ||
439 | mk_region(name, rp, | |
440 | U64_LSHIFT(a->slice_asym_base, DNV_ASYMSHIFT), | |
441 | U64_LSHIFT(a->slice_asym_limit, DNV_ASYMSHIFT) + | |
442 | GENMASK_ULL(DNV_ASYMSHIFT - 1, 0)); | |
443 | } | |
444 | ||
445 | static int apl_get_registers(void) | |
446 | { | |
164c2924 | 447 | int ret = -ENODEV; |
5c71ad17 TL |
448 | int i; |
449 | ||
450 | if (RD_REG(&asym_2way, b_cr_asym_2way_mem_region_mchbar)) | |
451 | return -ENODEV; | |
452 | ||
164c2924 TL |
453 | /* |
454 | * RD_REGP() will fail for unpopulated or non-existent | |
455 | * DIMM slots. Return success if we find at least one DIMM. | |
456 | */ | |
5c71ad17 | 457 | for (i = 0; i < APL_NUM_CHANNELS; i++) |
164c2924 TL |
458 | if (!RD_REGP(&drp0[i], d_cr_drp0, apl_dports[i])) |
459 | ret = 0; | |
5c71ad17 | 460 | |
164c2924 | 461 | return ret; |
5c71ad17 TL |
462 | } |
463 | ||
464 | static int dnv_get_registers(void) | |
465 | { | |
466 | int i; | |
467 | ||
468 | if (RD_REG(&dsch, d_cr_dsch)) | |
469 | return -ENODEV; | |
470 | ||
471 | for (i = 0; i < DNV_NUM_CHANNELS; i++) | |
472 | if (RD_REGP(&ecc_ctrl[i], d_cr_ecc_ctrl, dnv_dports[i]) || | |
473 | RD_REGP(&drp[i], d_cr_drp, dnv_dports[i]) || | |
474 | RD_REGP(&dmap[i], d_cr_dmap, dnv_dports[i]) || | |
475 | RD_REGP(&dmap1[i], d_cr_dmap1, dnv_dports[i]) || | |
476 | RD_REGP(&dmap2[i], d_cr_dmap2, dnv_dports[i]) || | |
477 | RD_REGP(&dmap3[i], d_cr_dmap3, dnv_dports[i]) || | |
478 | RD_REGP(&dmap4[i], d_cr_dmap4, dnv_dports[i]) || | |
479 | RD_REGP(&dmap5[i], d_cr_dmap5, dnv_dports[i])) | |
480 | return -ENODEV; | |
481 | ||
482 | return 0; | |
483 | } | |
484 | ||
485 | /* | |
486 | * Read all the h/w config registers once here (they don't | |
487 | * change at run time. Figure out which address ranges have | |
488 | * which interleave characteristics. | |
489 | */ | |
490 | static int get_registers(void) | |
491 | { | |
492 | const int intlv[] = { 10, 11, 12, 12 }; | |
493 | ||
494 | if (RD_REG(&tolud, b_cr_tolud_pci) || | |
495 | RD_REG(&touud_lo, b_cr_touud_lo_pci) || | |
496 | RD_REG(&touud_hi, b_cr_touud_hi_pci) || | |
497 | RD_REG(&asym0, b_cr_asym_mem_region0_mchbar) || | |
498 | RD_REG(&asym1, b_cr_asym_mem_region1_mchbar) || | |
499 | RD_REG(&mot_base, b_cr_mot_out_base_mchbar) || | |
500 | RD_REG(&mot_mask, b_cr_mot_out_mask_mchbar) || | |
501 | RD_REG(&chash, b_cr_slice_channel_hash)) | |
502 | return -ENODEV; | |
503 | ||
504 | if (ops->get_registers()) | |
505 | return -ENODEV; | |
506 | ||
507 | if (ops->type == DNV) { | |
508 | /* PMI channel idx (always 0) for asymmetric region */ | |
509 | asym0.slice0_asym_channel_select = 0; | |
510 | asym1.slice1_asym_channel_select = 0; | |
511 | /* PMI channel bitmap (always 1) for symmetric region */ | |
512 | chash.sym_slice0_channel_enabled = 0x1; | |
513 | chash.sym_slice1_channel_enabled = 0x1; | |
514 | } | |
515 | ||
516 | if (asym0.slice0_asym_enable) | |
517 | ops->mk_region("as0", &as0, &asym0); | |
518 | ||
519 | if (asym1.slice1_asym_enable) | |
520 | ops->mk_region("as1", &as1, &asym1); | |
521 | ||
522 | if (asym_2way.asym_2way_interleave_enable) { | |
523 | mk_region("as2way", &as2, | |
524 | U64_LSHIFT(asym_2way.asym_2way_base, APL_ASYMSHIFT), | |
525 | U64_LSHIFT(asym_2way.asym_2way_limit, APL_ASYMSHIFT) + | |
526 | GENMASK_ULL(APL_ASYMSHIFT - 1, 0)); | |
527 | } | |
528 | ||
529 | if (mot_base.imr_en) { | |
530 | mk_region_mask("mot", &mot, | |
531 | U64_LSHIFT(mot_base.mot_out_base, MOT_SHIFT), | |
532 | U64_LSHIFT(mot_mask.mot_out_mask, MOT_SHIFT)); | |
533 | } | |
534 | ||
535 | top_lm = U64_LSHIFT(tolud.tolud, 20); | |
536 | top_hm = U64_LSHIFT(touud_hi.touud, 32) | U64_LSHIFT(touud_lo.touud, 20); | |
537 | ||
538 | two_slices = !chash.slice_1_disabled && | |
539 | !chash.slice_0_mem_disabled && | |
540 | (chash.sym_slice0_channel_enabled != 0) && | |
541 | (chash.sym_slice1_channel_enabled != 0); | |
542 | two_channels = !chash.ch_1_disabled && | |
543 | !chash.enable_pmi_dual_data_mode && | |
544 | ((chash.sym_slice0_channel_enabled == 3) || | |
545 | (chash.sym_slice1_channel_enabled == 3)); | |
546 | ||
547 | sym_chan_mask = gen_sym_mask(&chash); | |
548 | asym_chan_mask = gen_asym_mask(&chash, &asym0, &asym1, &asym_2way); | |
549 | chan_mask = sym_chan_mask | asym_chan_mask; | |
550 | ||
551 | if (two_slices && !two_channels) { | |
552 | if (chash.hvm_mode) | |
553 | slice_selector = 29; | |
554 | else | |
555 | slice_selector = intlv[chash.interleave_mode]; | |
556 | } else if (!two_slices && two_channels) { | |
557 | if (chash.hvm_mode) | |
558 | chan_selector = 29; | |
559 | else | |
560 | chan_selector = intlv[chash.interleave_mode]; | |
561 | } else if (two_slices && two_channels) { | |
562 | if (chash.hvm_mode) { | |
563 | slice_selector = 29; | |
564 | chan_selector = 30; | |
565 | } else { | |
566 | slice_selector = intlv[chash.interleave_mode]; | |
567 | chan_selector = intlv[chash.interleave_mode] + 1; | |
568 | } | |
569 | } | |
570 | ||
571 | if (two_slices) { | |
572 | if (!chash.hvm_mode) | |
573 | slice_hash_mask = chash.slice_hash_mask << SLICE_HASH_MASK_LSB; | |
574 | if (!two_channels) | |
575 | slice_hash_mask |= BIT_ULL(slice_selector); | |
576 | } | |
577 | ||
578 | if (two_channels) { | |
579 | if (!chash.hvm_mode) | |
580 | chan_hash_mask = chash.ch_hash_mask << CH_HASH_MASK_LSB; | |
581 | if (!two_slices) | |
582 | chan_hash_mask |= BIT_ULL(chan_selector); | |
583 | } | |
584 | ||
585 | return 0; | |
586 | } | |
587 | ||
588 | /* Get a contiguous memory address (remove the MMIO gap) */ | |
589 | static u64 remove_mmio_gap(u64 sys) | |
590 | { | |
a50cc8de | 591 | return (sys < SZ_4G) ? sys : sys - (SZ_4G - top_lm); |
5c71ad17 TL |
592 | } |
593 | ||
594 | /* Squeeze out one address bit, shift upper part down to fill gap */ | |
595 | static void remove_addr_bit(u64 *addr, int bitidx) | |
596 | { | |
597 | u64 mask; | |
598 | ||
599 | if (bitidx == -1) | |
600 | return; | |
601 | ||
530258f8 | 602 | mask = BIT_ULL(bitidx) - 1; |
5c71ad17 TL |
603 | *addr = ((*addr >> 1) & ~mask) | (*addr & mask); |
604 | } | |
605 | ||
606 | /* XOR all the bits from addr specified in mask */ | |
607 | static int hash_by_mask(u64 addr, u64 mask) | |
608 | { | |
609 | u64 result = addr & mask; | |
610 | ||
611 | result = (result >> 32) ^ result; | |
612 | result = (result >> 16) ^ result; | |
613 | result = (result >> 8) ^ result; | |
614 | result = (result >> 4) ^ result; | |
615 | result = (result >> 2) ^ result; | |
616 | result = (result >> 1) ^ result; | |
617 | ||
618 | return (int)result & 1; | |
619 | } | |
620 | ||
621 | /* | |
622 | * First stage decode. Take the system address and figure out which | |
623 | * second stage will deal with it based on interleave modes. | |
624 | */ | |
625 | static int sys2pmi(const u64 addr, u32 *pmiidx, u64 *pmiaddr, char *msg) | |
626 | { | |
627 | u64 contig_addr, contig_base, contig_offset, contig_base_adj; | |
628 | int mot_intlv_bit = two_slices ? MOT_CHAN_INTLV_BIT_2SLC_2CH : | |
629 | MOT_CHAN_INTLV_BIT_1SLC_2CH; | |
630 | int slice_intlv_bit_rm = SELECTOR_DISABLED; | |
631 | int chan_intlv_bit_rm = SELECTOR_DISABLED; | |
632 | /* Determine if address is in the MOT region. */ | |
633 | bool mot_hit = in_region(&mot, addr); | |
634 | /* Calculate the number of symmetric regions enabled. */ | |
635 | int sym_channels = hweight8(sym_chan_mask); | |
636 | ||
637 | /* | |
638 | * The amount we need to shift the asym base can be determined by the | |
639 | * number of enabled symmetric channels. | |
640 | * NOTE: This can only work because symmetric memory is not supposed | |
641 | * to do a 3-way interleave. | |
642 | */ | |
643 | int sym_chan_shift = sym_channels >> 1; | |
644 | ||
645 | /* Give up if address is out of range, or in MMIO gap */ | |
530258f8 | 646 | if (addr >= BIT(PND_MAX_PHYS_BIT) || |
a50cc8de | 647 | (addr >= top_lm && addr < SZ_4G) || addr >= top_hm) { |
5c71ad17 TL |
648 | snprintf(msg, PND2_MSG_SIZE, "Error address 0x%llx is not DRAM", addr); |
649 | return -EINVAL; | |
650 | } | |
651 | ||
652 | /* Get a contiguous memory address (remove the MMIO gap) */ | |
653 | contig_addr = remove_mmio_gap(addr); | |
654 | ||
655 | if (in_region(&as0, addr)) { | |
656 | *pmiidx = asym0.slice0_asym_channel_select; | |
657 | ||
658 | contig_base = remove_mmio_gap(as0.base); | |
659 | contig_offset = contig_addr - contig_base; | |
660 | contig_base_adj = (contig_base >> sym_chan_shift) * | |
661 | ((chash.sym_slice0_channel_enabled >> (*pmiidx & 1)) & 1); | |
662 | contig_addr = contig_offset + ((sym_channels > 0) ? contig_base_adj : 0ull); | |
663 | } else if (in_region(&as1, addr)) { | |
664 | *pmiidx = 2u + asym1.slice1_asym_channel_select; | |
665 | ||
666 | contig_base = remove_mmio_gap(as1.base); | |
667 | contig_offset = contig_addr - contig_base; | |
668 | contig_base_adj = (contig_base >> sym_chan_shift) * | |
669 | ((chash.sym_slice1_channel_enabled >> (*pmiidx & 1)) & 1); | |
670 | contig_addr = contig_offset + ((sym_channels > 0) ? contig_base_adj : 0ull); | |
671 | } else if (in_region(&as2, addr) && (asym_2way.asym_2way_intlv_mode == 0x3ul)) { | |
672 | bool channel1; | |
673 | ||
674 | mot_intlv_bit = MOT_CHAN_INTLV_BIT_1SLC_2CH; | |
675 | *pmiidx = (asym_2way.asym_2way_intlv_mode & 1) << 1; | |
676 | channel1 = mot_hit ? ((bool)((addr >> mot_intlv_bit) & 1)) : | |
677 | hash_by_mask(contig_addr, chan_hash_mask); | |
678 | *pmiidx |= (u32)channel1; | |
679 | ||
680 | contig_base = remove_mmio_gap(as2.base); | |
681 | chan_intlv_bit_rm = mot_hit ? mot_intlv_bit : chan_selector; | |
682 | contig_offset = contig_addr - contig_base; | |
683 | remove_addr_bit(&contig_offset, chan_intlv_bit_rm); | |
684 | contig_addr = (contig_base >> sym_chan_shift) + contig_offset; | |
685 | } else { | |
686 | /* Otherwise we're in normal, boring symmetric mode. */ | |
687 | *pmiidx = 0u; | |
688 | ||
689 | if (two_slices) { | |
690 | bool slice1; | |
691 | ||
692 | if (mot_hit) { | |
693 | slice_intlv_bit_rm = MOT_SLC_INTLV_BIT; | |
694 | slice1 = (addr >> MOT_SLC_INTLV_BIT) & 1; | |
695 | } else { | |
696 | slice_intlv_bit_rm = slice_selector; | |
697 | slice1 = hash_by_mask(addr, slice_hash_mask); | |
698 | } | |
699 | ||
700 | *pmiidx = (u32)slice1 << 1; | |
701 | } | |
702 | ||
703 | if (two_channels) { | |
704 | bool channel1; | |
705 | ||
706 | mot_intlv_bit = two_slices ? MOT_CHAN_INTLV_BIT_2SLC_2CH : | |
707 | MOT_CHAN_INTLV_BIT_1SLC_2CH; | |
708 | ||
709 | if (mot_hit) { | |
710 | chan_intlv_bit_rm = mot_intlv_bit; | |
711 | channel1 = (addr >> mot_intlv_bit) & 1; | |
712 | } else { | |
713 | chan_intlv_bit_rm = chan_selector; | |
714 | channel1 = hash_by_mask(contig_addr, chan_hash_mask); | |
715 | } | |
716 | ||
717 | *pmiidx |= (u32)channel1; | |
718 | } | |
719 | } | |
720 | ||
721 | /* Remove the chan_selector bit first */ | |
722 | remove_addr_bit(&contig_addr, chan_intlv_bit_rm); | |
723 | /* Remove the slice bit (we remove it second because it must be lower */ | |
724 | remove_addr_bit(&contig_addr, slice_intlv_bit_rm); | |
725 | *pmiaddr = contig_addr; | |
726 | ||
727 | return 0; | |
728 | } | |
729 | ||
730 | /* Translate PMI address to memory (rank, row, bank, column) */ | |
530258f8 AS |
731 | #define C(n) (BIT(4) | (n)) /* column */ |
732 | #define B(n) (BIT(5) | (n)) /* bank */ | |
733 | #define R(n) (BIT(6) | (n)) /* row */ | |
734 | #define RS (BIT(7)) /* rank */ | |
5c71ad17 TL |
735 | |
736 | /* addrdec values */ | |
737 | #define AMAP_1KB 0 | |
738 | #define AMAP_2KB 1 | |
739 | #define AMAP_4KB 2 | |
740 | #define AMAP_RSVD 3 | |
741 | ||
742 | /* dden values */ | |
743 | #define DEN_4Gb 0 | |
744 | #define DEN_8Gb 2 | |
745 | ||
746 | /* dwid values */ | |
747 | #define X8 0 | |
748 | #define X16 1 | |
749 | ||
750 | static struct dimm_geometry { | |
751 | u8 addrdec; | |
752 | u8 dden; | |
753 | u8 dwid; | |
754 | u8 rowbits, colbits; | |
755 | u16 bits[PMI_ADDRESS_WIDTH]; | |
756 | } dimms[] = { | |
757 | { | |
758 | .addrdec = AMAP_1KB, .dden = DEN_4Gb, .dwid = X16, | |
759 | .rowbits = 15, .colbits = 10, | |
760 | .bits = { | |
761 | C(2), C(3), C(4), C(5), C(6), B(0), B(1), B(2), R(0), | |
762 | R(1), R(2), R(3), R(4), R(5), R(6), R(7), R(8), R(9), | |
763 | R(10), C(7), C(8), C(9), R(11), RS, R(12), R(13), R(14), | |
764 | 0, 0, 0, 0 | |
765 | } | |
766 | }, | |
767 | { | |
768 | .addrdec = AMAP_1KB, .dden = DEN_4Gb, .dwid = X8, | |
769 | .rowbits = 16, .colbits = 10, | |
770 | .bits = { | |
771 | C(2), C(3), C(4), C(5), C(6), B(0), B(1), B(2), R(0), | |
772 | R(1), R(2), R(3), R(4), R(5), R(6), R(7), R(8), R(9), | |
773 | R(10), C(7), C(8), C(9), R(11), RS, R(12), R(13), R(14), | |
774 | R(15), 0, 0, 0 | |
775 | } | |
776 | }, | |
777 | { | |
778 | .addrdec = AMAP_1KB, .dden = DEN_8Gb, .dwid = X16, | |
779 | .rowbits = 16, .colbits = 10, | |
780 | .bits = { | |
781 | C(2), C(3), C(4), C(5), C(6), B(0), B(1), B(2), R(0), | |
782 | R(1), R(2), R(3), R(4), R(5), R(6), R(7), R(8), R(9), | |
783 | R(10), C(7), C(8), C(9), R(11), RS, R(12), R(13), R(14), | |
784 | R(15), 0, 0, 0 | |
785 | } | |
786 | }, | |
787 | { | |
788 | .addrdec = AMAP_1KB, .dden = DEN_8Gb, .dwid = X8, | |
789 | .rowbits = 16, .colbits = 11, | |
790 | .bits = { | |
791 | C(2), C(3), C(4), C(5), C(6), B(0), B(1), B(2), R(0), | |
792 | R(1), R(2), R(3), R(4), R(5), R(6), R(7), R(8), R(9), | |
793 | R(10), C(7), C(8), C(9), R(11), RS, C(11), R(12), R(13), | |
794 | R(14), R(15), 0, 0 | |
795 | } | |
796 | }, | |
797 | { | |
798 | .addrdec = AMAP_2KB, .dden = DEN_4Gb, .dwid = X16, | |
799 | .rowbits = 15, .colbits = 10, | |
800 | .bits = { | |
801 | C(2), C(3), C(4), C(5), C(6), C(7), B(0), B(1), B(2), | |
802 | R(0), R(1), R(2), R(3), R(4), R(5), R(6), R(7), R(8), | |
803 | R(9), R(10), C(8), C(9), R(11), RS, R(12), R(13), R(14), | |
804 | 0, 0, 0, 0 | |
805 | } | |
806 | }, | |
807 | { | |
808 | .addrdec = AMAP_2KB, .dden = DEN_4Gb, .dwid = X8, | |
809 | .rowbits = 16, .colbits = 10, | |
810 | .bits = { | |
811 | C(2), C(3), C(4), C(5), C(6), C(7), B(0), B(1), B(2), | |
812 | R(0), R(1), R(2), R(3), R(4), R(5), R(6), R(7), R(8), | |
813 | R(9), R(10), C(8), C(9), R(11), RS, R(12), R(13), R(14), | |
814 | R(15), 0, 0, 0 | |
815 | } | |
816 | }, | |
817 | { | |
818 | .addrdec = AMAP_2KB, .dden = DEN_8Gb, .dwid = X16, | |
819 | .rowbits = 16, .colbits = 10, | |
820 | .bits = { | |
821 | C(2), C(3), C(4), C(5), C(6), C(7), B(0), B(1), B(2), | |
822 | R(0), R(1), R(2), R(3), R(4), R(5), R(6), R(7), R(8), | |
823 | R(9), R(10), C(8), C(9), R(11), RS, R(12), R(13), R(14), | |
824 | R(15), 0, 0, 0 | |
825 | } | |
826 | }, | |
827 | { | |
828 | .addrdec = AMAP_2KB, .dden = DEN_8Gb, .dwid = X8, | |
829 | .rowbits = 16, .colbits = 11, | |
830 | .bits = { | |
831 | C(2), C(3), C(4), C(5), C(6), C(7), B(0), B(1), B(2), | |
832 | R(0), R(1), R(2), R(3), R(4), R(5), R(6), R(7), R(8), | |
833 | R(9), R(10), C(8), C(9), R(11), RS, C(11), R(12), R(13), | |
834 | R(14), R(15), 0, 0 | |
835 | } | |
836 | }, | |
837 | { | |
838 | .addrdec = AMAP_4KB, .dden = DEN_4Gb, .dwid = X16, | |
839 | .rowbits = 15, .colbits = 10, | |
840 | .bits = { | |
841 | C(2), C(3), C(4), C(5), C(6), C(7), C(8), B(0), B(1), | |
842 | B(2), R(0), R(1), R(2), R(3), R(4), R(5), R(6), R(7), | |
843 | R(8), R(9), R(10), C(9), R(11), RS, R(12), R(13), R(14), | |
844 | 0, 0, 0, 0 | |
845 | } | |
846 | }, | |
847 | { | |
848 | .addrdec = AMAP_4KB, .dden = DEN_4Gb, .dwid = X8, | |
849 | .rowbits = 16, .colbits = 10, | |
850 | .bits = { | |
851 | C(2), C(3), C(4), C(5), C(6), C(7), C(8), B(0), B(1), | |
852 | B(2), R(0), R(1), R(2), R(3), R(4), R(5), R(6), R(7), | |
853 | R(8), R(9), R(10), C(9), R(11), RS, R(12), R(13), R(14), | |
854 | R(15), 0, 0, 0 | |
855 | } | |
856 | }, | |
857 | { | |
858 | .addrdec = AMAP_4KB, .dden = DEN_8Gb, .dwid = X16, | |
859 | .rowbits = 16, .colbits = 10, | |
860 | .bits = { | |
861 | C(2), C(3), C(4), C(5), C(6), C(7), C(8), B(0), B(1), | |
862 | B(2), R(0), R(1), R(2), R(3), R(4), R(5), R(6), R(7), | |
863 | R(8), R(9), R(10), C(9), R(11), RS, R(12), R(13), R(14), | |
864 | R(15), 0, 0, 0 | |
865 | } | |
866 | }, | |
867 | { | |
868 | .addrdec = AMAP_4KB, .dden = DEN_8Gb, .dwid = X8, | |
869 | .rowbits = 16, .colbits = 11, | |
870 | .bits = { | |
871 | C(2), C(3), C(4), C(5), C(6), C(7), C(8), B(0), B(1), | |
872 | B(2), R(0), R(1), R(2), R(3), R(4), R(5), R(6), R(7), | |
873 | R(8), R(9), R(10), C(9), R(11), RS, C(11), R(12), R(13), | |
874 | R(14), R(15), 0, 0 | |
875 | } | |
876 | } | |
877 | }; | |
878 | ||
879 | static int bank_hash(u64 pmiaddr, int idx, int shft) | |
880 | { | |
881 | int bhash = 0; | |
882 | ||
883 | switch (idx) { | |
884 | case 0: | |
885 | bhash ^= ((pmiaddr >> (12 + shft)) ^ (pmiaddr >> (9 + shft))) & 1; | |
886 | break; | |
887 | case 1: | |
888 | bhash ^= (((pmiaddr >> (10 + shft)) ^ (pmiaddr >> (8 + shft))) & 1) << 1; | |
889 | bhash ^= ((pmiaddr >> 22) & 1) << 1; | |
890 | break; | |
891 | case 2: | |
892 | bhash ^= (((pmiaddr >> (13 + shft)) ^ (pmiaddr >> (11 + shft))) & 1) << 2; | |
893 | break; | |
894 | } | |
895 | ||
896 | return bhash; | |
897 | } | |
898 | ||
899 | static int rank_hash(u64 pmiaddr) | |
900 | { | |
901 | return ((pmiaddr >> 16) ^ (pmiaddr >> 10)) & 1; | |
902 | } | |
903 | ||
904 | /* Second stage decode. Compute rank, bank, row & column. */ | |
905 | static int apl_pmi2mem(struct mem_ctl_info *mci, u64 pmiaddr, u32 pmiidx, | |
906 | struct dram_addr *daddr, char *msg) | |
907 | { | |
908 | struct d_cr_drp0 *cr_drp0 = &drp0[pmiidx]; | |
909 | struct pnd2_pvt *pvt = mci->pvt_info; | |
910 | int g = pvt->dimm_geom[pmiidx]; | |
911 | struct dimm_geometry *d = &dimms[g]; | |
912 | int column = 0, bank = 0, row = 0, rank = 0; | |
913 | int i, idx, type, skiprs = 0; | |
914 | ||
915 | for (i = 0; i < PMI_ADDRESS_WIDTH; i++) { | |
916 | int bit = (pmiaddr >> i) & 1; | |
917 | ||
918 | if (i + skiprs >= PMI_ADDRESS_WIDTH) { | |
919 | snprintf(msg, PND2_MSG_SIZE, "Bad dimm_geometry[] table\n"); | |
920 | return -EINVAL; | |
921 | } | |
922 | ||
923 | type = d->bits[i + skiprs] & ~0xf; | |
924 | idx = d->bits[i + skiprs] & 0xf; | |
925 | ||
926 | /* | |
927 | * On single rank DIMMs ignore the rank select bit | |
928 | * and shift remainder of "bits[]" down one place. | |
929 | */ | |
930 | if (type == RS && (cr_drp0->rken0 + cr_drp0->rken1) == 1) { | |
931 | skiprs = 1; | |
932 | type = d->bits[i + skiprs] & ~0xf; | |
933 | idx = d->bits[i + skiprs] & 0xf; | |
934 | } | |
935 | ||
936 | switch (type) { | |
937 | case C(0): | |
938 | column |= (bit << idx); | |
939 | break; | |
940 | case B(0): | |
941 | bank |= (bit << idx); | |
942 | if (cr_drp0->bahen) | |
943 | bank ^= bank_hash(pmiaddr, idx, d->addrdec); | |
944 | break; | |
945 | case R(0): | |
946 | row |= (bit << idx); | |
947 | break; | |
948 | case RS: | |
949 | rank = bit; | |
950 | if (cr_drp0->rsien) | |
951 | rank ^= rank_hash(pmiaddr); | |
952 | break; | |
953 | default: | |
954 | if (bit) { | |
955 | snprintf(msg, PND2_MSG_SIZE, "Bad translation\n"); | |
956 | return -EINVAL; | |
957 | } | |
958 | goto done; | |
959 | } | |
960 | } | |
961 | ||
962 | done: | |
963 | daddr->col = column; | |
964 | daddr->bank = bank; | |
965 | daddr->row = row; | |
966 | daddr->rank = rank; | |
967 | daddr->dimm = 0; | |
968 | ||
969 | return 0; | |
970 | } | |
971 | ||
972 | /* Pluck bit "in" from pmiaddr and return value shifted to bit "out" */ | |
973 | #define dnv_get_bit(pmi, in, out) ((int)(((pmi) >> (in)) & 1u) << (out)) | |
974 | ||
975 | static int dnv_pmi2mem(struct mem_ctl_info *mci, u64 pmiaddr, u32 pmiidx, | |
976 | struct dram_addr *daddr, char *msg) | |
977 | { | |
978 | /* Rank 0 or 1 */ | |
979 | daddr->rank = dnv_get_bit(pmiaddr, dmap[pmiidx].rs0 + 13, 0); | |
980 | /* Rank 2 or 3 */ | |
981 | daddr->rank |= dnv_get_bit(pmiaddr, dmap[pmiidx].rs1 + 13, 1); | |
982 | ||
983 | /* | |
984 | * Normally ranks 0,1 are DIMM0, and 2,3 are DIMM1, but we | |
985 | * flip them if DIMM1 is larger than DIMM0. | |
986 | */ | |
987 | daddr->dimm = (daddr->rank >= 2) ^ drp[pmiidx].dimmflip; | |
988 | ||
989 | daddr->bank = dnv_get_bit(pmiaddr, dmap[pmiidx].ba0 + 6, 0); | |
990 | daddr->bank |= dnv_get_bit(pmiaddr, dmap[pmiidx].ba1 + 6, 1); | |
991 | daddr->bank |= dnv_get_bit(pmiaddr, dmap[pmiidx].bg0 + 6, 2); | |
992 | if (dsch.ddr4en) | |
993 | daddr->bank |= dnv_get_bit(pmiaddr, dmap[pmiidx].bg1 + 6, 3); | |
994 | if (dmap1[pmiidx].bxor) { | |
995 | if (dsch.ddr4en) { | |
996 | daddr->bank ^= dnv_get_bit(pmiaddr, dmap3[pmiidx].row6 + 6, 0); | |
997 | daddr->bank ^= dnv_get_bit(pmiaddr, dmap3[pmiidx].row7 + 6, 1); | |
998 | if (dsch.chan_width == 0) | |
999 | /* 64/72 bit dram channel width */ | |
1000 | daddr->bank ^= dnv_get_bit(pmiaddr, dmap5[pmiidx].ca3 + 6, 2); | |
1001 | else | |
1002 | /* 32/40 bit dram channel width */ | |
1003 | daddr->bank ^= dnv_get_bit(pmiaddr, dmap5[pmiidx].ca4 + 6, 2); | |
1004 | daddr->bank ^= dnv_get_bit(pmiaddr, dmap2[pmiidx].row2 + 6, 3); | |
1005 | } else { | |
1006 | daddr->bank ^= dnv_get_bit(pmiaddr, dmap2[pmiidx].row2 + 6, 0); | |
1007 | daddr->bank ^= dnv_get_bit(pmiaddr, dmap3[pmiidx].row6 + 6, 1); | |
1008 | if (dsch.chan_width == 0) | |
1009 | daddr->bank ^= dnv_get_bit(pmiaddr, dmap5[pmiidx].ca3 + 6, 2); | |
1010 | else | |
1011 | daddr->bank ^= dnv_get_bit(pmiaddr, dmap5[pmiidx].ca4 + 6, 2); | |
1012 | } | |
1013 | } | |
1014 | ||
1015 | daddr->row = dnv_get_bit(pmiaddr, dmap2[pmiidx].row0 + 6, 0); | |
1016 | daddr->row |= dnv_get_bit(pmiaddr, dmap2[pmiidx].row1 + 6, 1); | |
1017 | daddr->row |= dnv_get_bit(pmiaddr, dmap2[pmiidx].row2 + 6, 2); | |
1018 | daddr->row |= dnv_get_bit(pmiaddr, dmap2[pmiidx].row3 + 6, 3); | |
1019 | daddr->row |= dnv_get_bit(pmiaddr, dmap2[pmiidx].row4 + 6, 4); | |
1020 | daddr->row |= dnv_get_bit(pmiaddr, dmap2[pmiidx].row5 + 6, 5); | |
1021 | daddr->row |= dnv_get_bit(pmiaddr, dmap3[pmiidx].row6 + 6, 6); | |
1022 | daddr->row |= dnv_get_bit(pmiaddr, dmap3[pmiidx].row7 + 6, 7); | |
1023 | daddr->row |= dnv_get_bit(pmiaddr, dmap3[pmiidx].row8 + 6, 8); | |
1024 | daddr->row |= dnv_get_bit(pmiaddr, dmap3[pmiidx].row9 + 6, 9); | |
1025 | daddr->row |= dnv_get_bit(pmiaddr, dmap3[pmiidx].row10 + 6, 10); | |
1026 | daddr->row |= dnv_get_bit(pmiaddr, dmap3[pmiidx].row11 + 6, 11); | |
1027 | daddr->row |= dnv_get_bit(pmiaddr, dmap4[pmiidx].row12 + 6, 12); | |
1028 | daddr->row |= dnv_get_bit(pmiaddr, dmap4[pmiidx].row13 + 6, 13); | |
1029 | if (dmap4[pmiidx].row14 != 31) | |
1030 | daddr->row |= dnv_get_bit(pmiaddr, dmap4[pmiidx].row14 + 6, 14); | |
1031 | if (dmap4[pmiidx].row15 != 31) | |
1032 | daddr->row |= dnv_get_bit(pmiaddr, dmap4[pmiidx].row15 + 6, 15); | |
1033 | if (dmap4[pmiidx].row16 != 31) | |
1034 | daddr->row |= dnv_get_bit(pmiaddr, dmap4[pmiidx].row16 + 6, 16); | |
1035 | if (dmap4[pmiidx].row17 != 31) | |
1036 | daddr->row |= dnv_get_bit(pmiaddr, dmap4[pmiidx].row17 + 6, 17); | |
1037 | ||
1038 | daddr->col = dnv_get_bit(pmiaddr, dmap5[pmiidx].ca3 + 6, 3); | |
1039 | daddr->col |= dnv_get_bit(pmiaddr, dmap5[pmiidx].ca4 + 6, 4); | |
1040 | daddr->col |= dnv_get_bit(pmiaddr, dmap5[pmiidx].ca5 + 6, 5); | |
1041 | daddr->col |= dnv_get_bit(pmiaddr, dmap5[pmiidx].ca6 + 6, 6); | |
1042 | daddr->col |= dnv_get_bit(pmiaddr, dmap5[pmiidx].ca7 + 6, 7); | |
1043 | daddr->col |= dnv_get_bit(pmiaddr, dmap5[pmiidx].ca8 + 6, 8); | |
1044 | daddr->col |= dnv_get_bit(pmiaddr, dmap5[pmiidx].ca9 + 6, 9); | |
1045 | if (!dsch.ddr4en && dmap1[pmiidx].ca11 != 0x3f) | |
1046 | daddr->col |= dnv_get_bit(pmiaddr, dmap1[pmiidx].ca11 + 13, 11); | |
1047 | ||
1048 | return 0; | |
1049 | } | |
1050 | ||
1051 | static int check_channel(int ch) | |
1052 | { | |
1053 | if (drp0[ch].dramtype != 0) { | |
1054 | pnd2_printk(KERN_INFO, "Unsupported DIMM in channel %d\n", ch); | |
1055 | return 1; | |
1056 | } else if (drp0[ch].eccen == 0) { | |
1057 | pnd2_printk(KERN_INFO, "ECC disabled on channel %d\n", ch); | |
1058 | return 1; | |
1059 | } | |
1060 | return 0; | |
1061 | } | |
1062 | ||
1063 | static int apl_check_ecc_active(void) | |
1064 | { | |
1065 | int i, ret = 0; | |
1066 | ||
1067 | /* Check dramtype and ECC mode for each present DIMM */ | |
530258f8 AS |
1068 | for_each_set_bit(i, &chan_mask, APL_NUM_CHANNELS) |
1069 | ret += check_channel(i); | |
1070 | ||
5c71ad17 TL |
1071 | return ret ? -EINVAL : 0; |
1072 | } | |
1073 | ||
1074 | #define DIMMS_PRESENT(d) ((d)->rken0 + (d)->rken1 + (d)->rken2 + (d)->rken3) | |
1075 | ||
1076 | static int check_unit(int ch) | |
1077 | { | |
1078 | struct d_cr_drp *d = &drp[ch]; | |
1079 | ||
1080 | if (DIMMS_PRESENT(d) && !ecc_ctrl[ch].eccen) { | |
1081 | pnd2_printk(KERN_INFO, "ECC disabled on channel %d\n", ch); | |
1082 | return 1; | |
1083 | } | |
1084 | return 0; | |
1085 | } | |
1086 | ||
1087 | static int dnv_check_ecc_active(void) | |
1088 | { | |
1089 | int i, ret = 0; | |
1090 | ||
1091 | for (i = 0; i < DNV_NUM_CHANNELS; i++) | |
1092 | ret += check_unit(i); | |
1093 | return ret ? -EINVAL : 0; | |
1094 | } | |
1095 | ||
1096 | static int get_memory_error_data(struct mem_ctl_info *mci, u64 addr, | |
1097 | struct dram_addr *daddr, char *msg) | |
1098 | { | |
1099 | u64 pmiaddr; | |
1100 | u32 pmiidx; | |
1101 | int ret; | |
1102 | ||
1103 | ret = sys2pmi(addr, &pmiidx, &pmiaddr, msg); | |
1104 | if (ret) | |
1105 | return ret; | |
1106 | ||
1107 | pmiaddr >>= ops->pmiaddr_shift; | |
1108 | /* pmi channel idx to dimm channel idx */ | |
1109 | pmiidx >>= ops->pmiidx_shift; | |
1110 | daddr->chan = pmiidx; | |
1111 | ||
1112 | ret = ops->pmi2mem(mci, pmiaddr, pmiidx, daddr, msg); | |
1113 | if (ret) | |
1114 | return ret; | |
1115 | ||
1116 | edac_dbg(0, "SysAddr=%llx PmiAddr=%llx Channel=%d DIMM=%d Rank=%d Bank=%d Row=%d Column=%d\n", | |
1117 | addr, pmiaddr, daddr->chan, daddr->dimm, daddr->rank, daddr->bank, daddr->row, daddr->col); | |
1118 | ||
1119 | return 0; | |
1120 | } | |
1121 | ||
1122 | static void pnd2_mce_output_error(struct mem_ctl_info *mci, const struct mce *m, | |
1123 | struct dram_addr *daddr) | |
1124 | { | |
1125 | enum hw_event_mc_err_type tp_event; | |
1126 | char *optype, msg[PND2_MSG_SIZE]; | |
1127 | bool ripv = m->mcgstatus & MCG_STATUS_RIPV; | |
1128 | bool overflow = m->status & MCI_STATUS_OVER; | |
1129 | bool uc_err = m->status & MCI_STATUS_UC; | |
1130 | bool recov = m->status & MCI_STATUS_S; | |
1131 | u32 core_err_cnt = GET_BITFIELD(m->status, 38, 52); | |
1132 | u32 mscod = GET_BITFIELD(m->status, 16, 31); | |
1133 | u32 errcode = GET_BITFIELD(m->status, 0, 15); | |
1134 | u32 optypenum = GET_BITFIELD(m->status, 4, 6); | |
1135 | int rc; | |
1136 | ||
45bc6098 | 1137 | tp_event = uc_err ? (ripv ? HW_EVENT_ERR_UNCORRECTED : HW_EVENT_ERR_FATAL) : |
5c71ad17 TL |
1138 | HW_EVENT_ERR_CORRECTED; |
1139 | ||
1140 | /* | |
1141 | * According with Table 15-9 of the Intel Architecture spec vol 3A, | |
1142 | * memory errors should fit in this mask: | |
1143 | * 000f 0000 1mmm cccc (binary) | |
1144 | * where: | |
1145 | * f = Correction Report Filtering Bit. If 1, subsequent errors | |
1146 | * won't be shown | |
1147 | * mmm = error type | |
1148 | * cccc = channel | |
1149 | * If the mask doesn't match, report an error to the parsing logic | |
1150 | */ | |
1151 | if (!((errcode & 0xef80) == 0x80)) { | |
1152 | optype = "Can't parse: it is not a mem"; | |
1153 | } else { | |
1154 | switch (optypenum) { | |
1155 | case 0: | |
1156 | optype = "generic undef request error"; | |
1157 | break; | |
1158 | case 1: | |
1159 | optype = "memory read error"; | |
1160 | break; | |
1161 | case 2: | |
1162 | optype = "memory write error"; | |
1163 | break; | |
1164 | case 3: | |
1165 | optype = "addr/cmd error"; | |
1166 | break; | |
1167 | case 4: | |
1168 | optype = "memory scrubbing error"; | |
1169 | break; | |
1170 | default: | |
1171 | optype = "reserved"; | |
1172 | break; | |
1173 | } | |
1174 | } | |
1175 | ||
1176 | /* Only decode errors with an valid address (ADDRV) */ | |
1177 | if (!(m->status & MCI_STATUS_ADDRV)) | |
1178 | return; | |
1179 | ||
1180 | rc = get_memory_error_data(mci, m->addr, daddr, msg); | |
1181 | if (rc) | |
1182 | goto address_error; | |
1183 | ||
1184 | snprintf(msg, sizeof(msg), | |
1185 | "%s%s err_code:%04x:%04x channel:%d DIMM:%d rank:%d row:%d bank:%d col:%d", | |
1186 | overflow ? " OVERFLOW" : "", (uc_err && recov) ? " recoverable" : "", mscod, | |
1187 | errcode, daddr->chan, daddr->dimm, daddr->rank, daddr->row, daddr->bank, daddr->col); | |
1188 | ||
1189 | edac_dbg(0, "%s\n", msg); | |
1190 | ||
1191 | /* Call the helper to output message */ | |
1192 | edac_mc_handle_error(tp_event, mci, core_err_cnt, m->addr >> PAGE_SHIFT, | |
819f60fb | 1193 | m->addr & ~PAGE_MASK, 0, daddr->chan, daddr->dimm, -1, optype, msg); |
5c71ad17 TL |
1194 | |
1195 | return; | |
1196 | ||
1197 | address_error: | |
1198 | edac_mc_handle_error(tp_event, mci, core_err_cnt, 0, 0, 0, -1, -1, -1, msg, ""); | |
1199 | } | |
1200 | ||
1201 | static void apl_get_dimm_config(struct mem_ctl_info *mci) | |
1202 | { | |
1203 | struct pnd2_pvt *pvt = mci->pvt_info; | |
1204 | struct dimm_info *dimm; | |
1205 | struct d_cr_drp0 *d; | |
1206 | u64 capacity; | |
1207 | int i, g; | |
1208 | ||
530258f8 | 1209 | for_each_set_bit(i, &chan_mask, APL_NUM_CHANNELS) { |
bc9ad9e4 | 1210 | dimm = edac_get_dimm(mci, i, 0, 0); |
5c71ad17 TL |
1211 | if (!dimm) { |
1212 | edac_dbg(0, "No allocated DIMM for channel %d\n", i); | |
1213 | continue; | |
1214 | } | |
1215 | ||
1216 | d = &drp0[i]; | |
1217 | for (g = 0; g < ARRAY_SIZE(dimms); g++) | |
1218 | if (dimms[g].addrdec == d->addrdec && | |
1219 | dimms[g].dden == d->dden && | |
1220 | dimms[g].dwid == d->dwid) | |
1221 | break; | |
1222 | ||
1223 | if (g == ARRAY_SIZE(dimms)) { | |
1224 | edac_dbg(0, "Channel %d: unrecognized DIMM\n", i); | |
1225 | continue; | |
1226 | } | |
1227 | ||
1228 | pvt->dimm_geom[i] = g; | |
530258f8 | 1229 | capacity = (d->rken0 + d->rken1) * 8 * BIT(dimms[g].rowbits + dimms[g].colbits); |
5c71ad17 TL |
1230 | edac_dbg(0, "Channel %d: %lld MByte DIMM\n", i, capacity >> (20 - 3)); |
1231 | dimm->nr_pages = MiB_TO_PAGES(capacity >> (20 - 3)); | |
1232 | dimm->grain = 32; | |
1233 | dimm->dtype = (d->dwid == 0) ? DEV_X8 : DEV_X16; | |
1234 | dimm->mtype = MEM_DDR3; | |
1235 | dimm->edac_mode = EDAC_SECDED; | |
1236 | snprintf(dimm->label, sizeof(dimm->label), "Slice#%d_Chan#%d", i / 2, i % 2); | |
1237 | } | |
1238 | } | |
1239 | ||
1240 | static const int dnv_dtypes[] = { | |
1241 | DEV_X8, DEV_X4, DEV_X16, DEV_UNKNOWN | |
1242 | }; | |
1243 | ||
1244 | static void dnv_get_dimm_config(struct mem_ctl_info *mci) | |
1245 | { | |
1246 | int i, j, ranks_of_dimm[DNV_MAX_DIMMS], banks, rowbits, colbits, memtype; | |
1247 | struct dimm_info *dimm; | |
1248 | struct d_cr_drp *d; | |
1249 | u64 capacity; | |
1250 | ||
1251 | if (dsch.ddr4en) { | |
1252 | memtype = MEM_DDR4; | |
1253 | banks = 16; | |
1254 | colbits = 10; | |
1255 | } else { | |
1256 | memtype = MEM_DDR3; | |
1257 | banks = 8; | |
1258 | } | |
1259 | ||
1260 | for (i = 0; i < DNV_NUM_CHANNELS; i++) { | |
1261 | if (dmap4[i].row14 == 31) | |
1262 | rowbits = 14; | |
1263 | else if (dmap4[i].row15 == 31) | |
1264 | rowbits = 15; | |
1265 | else if (dmap4[i].row16 == 31) | |
1266 | rowbits = 16; | |
1267 | else if (dmap4[i].row17 == 31) | |
1268 | rowbits = 17; | |
1269 | else | |
1270 | rowbits = 18; | |
1271 | ||
1272 | if (memtype == MEM_DDR3) { | |
1273 | if (dmap1[i].ca11 != 0x3f) | |
1274 | colbits = 12; | |
1275 | else | |
1276 | colbits = 10; | |
1277 | } | |
1278 | ||
1279 | d = &drp[i]; | |
1280 | /* DIMM0 is present if rank0 and/or rank1 is enabled */ | |
1281 | ranks_of_dimm[0] = d->rken0 + d->rken1; | |
1282 | /* DIMM1 is present if rank2 and/or rank3 is enabled */ | |
1283 | ranks_of_dimm[1] = d->rken2 + d->rken3; | |
1284 | ||
1285 | for (j = 0; j < DNV_MAX_DIMMS; j++) { | |
1286 | if (!ranks_of_dimm[j]) | |
1287 | continue; | |
1288 | ||
bc9ad9e4 | 1289 | dimm = edac_get_dimm(mci, i, j, 0); |
5c71ad17 TL |
1290 | if (!dimm) { |
1291 | edac_dbg(0, "No allocated DIMM for channel %d DIMM %d\n", i, j); | |
1292 | continue; | |
1293 | } | |
1294 | ||
530258f8 | 1295 | capacity = ranks_of_dimm[j] * banks * BIT(rowbits + colbits); |
5c71ad17 TL |
1296 | edac_dbg(0, "Channel %d DIMM %d: %lld MByte DIMM\n", i, j, capacity >> (20 - 3)); |
1297 | dimm->nr_pages = MiB_TO_PAGES(capacity >> (20 - 3)); | |
1298 | dimm->grain = 32; | |
1299 | dimm->dtype = dnv_dtypes[j ? d->dimmdwid0 : d->dimmdwid1]; | |
1300 | dimm->mtype = memtype; | |
1301 | dimm->edac_mode = EDAC_SECDED; | |
1302 | snprintf(dimm->label, sizeof(dimm->label), "Chan#%d_DIMM#%d", i, j); | |
1303 | } | |
1304 | } | |
1305 | } | |
1306 | ||
1307 | static int pnd2_register_mci(struct mem_ctl_info **ppmci) | |
1308 | { | |
1309 | struct edac_mc_layer layers[2]; | |
1310 | struct mem_ctl_info *mci; | |
1311 | struct pnd2_pvt *pvt; | |
1312 | int rc; | |
1313 | ||
1314 | rc = ops->check_ecc(); | |
1315 | if (rc < 0) | |
1316 | return rc; | |
1317 | ||
1318 | /* Allocate a new MC control structure */ | |
1319 | layers[0].type = EDAC_MC_LAYER_CHANNEL; | |
1320 | layers[0].size = ops->channels; | |
1321 | layers[0].is_virt_csrow = false; | |
1322 | layers[1].type = EDAC_MC_LAYER_SLOT; | |
1323 | layers[1].size = ops->dimms_per_channel; | |
1324 | layers[1].is_virt_csrow = true; | |
1325 | mci = edac_mc_alloc(0, ARRAY_SIZE(layers), layers, sizeof(*pvt)); | |
1326 | if (!mci) | |
1327 | return -ENOMEM; | |
1328 | ||
1329 | pvt = mci->pvt_info; | |
1330 | memset(pvt, 0, sizeof(*pvt)); | |
1331 | ||
301375e7 | 1332 | mci->mod_name = EDAC_MOD_STR; |
5c71ad17 TL |
1333 | mci->dev_name = ops->name; |
1334 | mci->ctl_name = "Pondicherry2"; | |
1335 | ||
1336 | /* Get dimm basic config and the memory layout */ | |
1337 | ops->get_dimm_config(mci); | |
1338 | ||
1339 | if (edac_mc_add_mc(mci)) { | |
1340 | edac_dbg(0, "MC: failed edac_mc_add_mc()\n"); | |
1341 | edac_mc_free(mci); | |
1342 | return -EINVAL; | |
1343 | } | |
1344 | ||
1345 | *ppmci = mci; | |
1346 | ||
1347 | return 0; | |
1348 | } | |
1349 | ||
1350 | static void pnd2_unregister_mci(struct mem_ctl_info *mci) | |
1351 | { | |
1352 | if (unlikely(!mci || !mci->pvt_info)) { | |
1353 | pnd2_printk(KERN_ERR, "Couldn't find mci handler\n"); | |
1354 | return; | |
1355 | } | |
1356 | ||
1357 | /* Remove MC sysfs nodes */ | |
1358 | edac_mc_del_mc(NULL); | |
1359 | edac_dbg(1, "%s: free mci struct\n", mci->ctl_name); | |
1360 | edac_mc_free(mci); | |
1361 | } | |
1362 | ||
1363 | /* | |
1364 | * Callback function registered with core kernel mce code. | |
1365 | * Called once for each logged error. | |
1366 | */ | |
1367 | static int pnd2_mce_check_error(struct notifier_block *nb, unsigned long val, void *data) | |
1368 | { | |
1369 | struct mce *mce = (struct mce *)data; | |
1370 | struct mem_ctl_info *mci; | |
1371 | struct dram_addr daddr; | |
1372 | char *type; | |
1373 | ||
5c71ad17 | 1374 | mci = pnd2_mci; |
23ba710a | 1375 | if (!mci || (mce->kflags & MCE_HANDLED_CEC)) |
5c71ad17 TL |
1376 | return NOTIFY_DONE; |
1377 | ||
1378 | /* | |
1379 | * Just let mcelog handle it if the error is | |
1380 | * outside the memory controller. A memory error | |
1381 | * is indicated by bit 7 = 1 and bits = 8-11,13-15 = 0. | |
1382 | * bit 12 has an special meaning. | |
1383 | */ | |
1384 | if ((mce->status & 0xefff) >> 7 != 1) | |
1385 | return NOTIFY_DONE; | |
1386 | ||
1387 | if (mce->mcgstatus & MCG_STATUS_MCIP) | |
1388 | type = "Exception"; | |
1389 | else | |
1390 | type = "Event"; | |
1391 | ||
1392 | pnd2_mc_printk(mci, KERN_INFO, "HANDLING MCE MEMORY ERROR\n"); | |
1393 | pnd2_mc_printk(mci, KERN_INFO, "CPU %u: Machine Check %s: %llx Bank %u: %llx\n", | |
1394 | mce->extcpu, type, mce->mcgstatus, mce->bank, mce->status); | |
1395 | pnd2_mc_printk(mci, KERN_INFO, "TSC %llx ", mce->tsc); | |
1396 | pnd2_mc_printk(mci, KERN_INFO, "ADDR %llx ", mce->addr); | |
1397 | pnd2_mc_printk(mci, KERN_INFO, "MISC %llx ", mce->misc); | |
1398 | pnd2_mc_printk(mci, KERN_INFO, "PROCESSOR %u:%x TIME %llu SOCKET %u APIC %x\n", | |
1399 | mce->cpuvendor, mce->cpuid, mce->time, mce->socketid, mce->apicid); | |
1400 | ||
1401 | pnd2_mce_output_error(mci, mce, &daddr); | |
1402 | ||
1403 | /* Advice mcelog that the error were handled */ | |
23ba710a TL |
1404 | mce->kflags |= MCE_HANDLED_EDAC; |
1405 | return NOTIFY_OK; | |
5c71ad17 TL |
1406 | } |
1407 | ||
1408 | static struct notifier_block pnd2_mce_dec = { | |
1409 | .notifier_call = pnd2_mce_check_error, | |
30bf38e4 | 1410 | .priority = MCE_PRIO_EDAC, |
5c71ad17 TL |
1411 | }; |
1412 | ||
1413 | #ifdef CONFIG_EDAC_DEBUG | |
1414 | /* | |
1415 | * Write an address to this file to exercise the address decode | |
1416 | * logic in this driver. | |
1417 | */ | |
1418 | static u64 pnd2_fake_addr; | |
1419 | #define PND2_BLOB_SIZE 1024 | |
1420 | static char pnd2_result[PND2_BLOB_SIZE]; | |
1421 | static struct dentry *pnd2_test; | |
1422 | static struct debugfs_blob_wrapper pnd2_blob = { | |
1423 | .data = pnd2_result, | |
1424 | .size = 0 | |
1425 | }; | |
1426 | ||
1427 | static int debugfs_u64_set(void *data, u64 val) | |
1428 | { | |
1429 | struct dram_addr daddr; | |
1430 | struct mce m; | |
1431 | ||
1432 | *(u64 *)data = val; | |
1433 | m.mcgstatus = 0; | |
1434 | /* ADDRV + MemRd + Unknown channel */ | |
1435 | m.status = MCI_STATUS_ADDRV + 0x9f; | |
1436 | m.addr = val; | |
1437 | pnd2_mce_output_error(pnd2_mci, &m, &daddr); | |
1438 | snprintf(pnd2_blob.data, PND2_BLOB_SIZE, | |
1439 | "SysAddr=%llx Channel=%d DIMM=%d Rank=%d Bank=%d Row=%d Column=%d\n", | |
1440 | m.addr, daddr.chan, daddr.dimm, daddr.rank, daddr.bank, daddr.row, daddr.col); | |
1441 | pnd2_blob.size = strlen(pnd2_blob.data); | |
1442 | ||
1443 | return 0; | |
1444 | } | |
1445 | DEFINE_DEBUGFS_ATTRIBUTE(fops_u64_wo, NULL, debugfs_u64_set, "%llu\n"); | |
1446 | ||
1447 | static void setup_pnd2_debug(void) | |
1448 | { | |
1449 | pnd2_test = edac_debugfs_create_dir("pnd2_test"); | |
1450 | edac_debugfs_create_file("pnd2_debug_addr", 0200, pnd2_test, | |
1451 | &pnd2_fake_addr, &fops_u64_wo); | |
1452 | debugfs_create_blob("pnd2_debug_results", 0400, pnd2_test, &pnd2_blob); | |
1453 | } | |
1454 | ||
1455 | static void teardown_pnd2_debug(void) | |
1456 | { | |
1457 | debugfs_remove_recursive(pnd2_test); | |
1458 | } | |
cd1be315 BP |
1459 | #else |
1460 | static void setup_pnd2_debug(void) {} | |
1461 | static void teardown_pnd2_debug(void) {} | |
1462 | #endif /* CONFIG_EDAC_DEBUG */ | |
1463 | ||
5c71ad17 TL |
1464 | |
1465 | static int pnd2_probe(void) | |
1466 | { | |
1467 | int rc; | |
1468 | ||
1469 | edac_dbg(2, "\n"); | |
1470 | rc = get_registers(); | |
1471 | if (rc) | |
1472 | return rc; | |
1473 | ||
1474 | return pnd2_register_mci(&pnd2_mci); | |
1475 | } | |
1476 | ||
1477 | static void pnd2_remove(void) | |
1478 | { | |
1479 | edac_dbg(0, "\n"); | |
1480 | pnd2_unregister_mci(pnd2_mci); | |
1481 | } | |
1482 | ||
1483 | static struct dunit_ops apl_ops = { | |
1484 | .name = "pnd2/apl", | |
1485 | .type = APL, | |
1486 | .pmiaddr_shift = LOG2_PMI_ADDR_GRANULARITY, | |
1487 | .pmiidx_shift = 0, | |
1488 | .channels = APL_NUM_CHANNELS, | |
1489 | .dimms_per_channel = 1, | |
1490 | .rd_reg = apl_rd_reg, | |
1491 | .get_registers = apl_get_registers, | |
1492 | .check_ecc = apl_check_ecc_active, | |
1493 | .mk_region = apl_mk_region, | |
1494 | .get_dimm_config = apl_get_dimm_config, | |
1495 | .pmi2mem = apl_pmi2mem, | |
1496 | }; | |
1497 | ||
1498 | static struct dunit_ops dnv_ops = { | |
1499 | .name = "pnd2/dnv", | |
1500 | .type = DNV, | |
1501 | .pmiaddr_shift = 0, | |
1502 | .pmiidx_shift = 1, | |
1503 | .channels = DNV_NUM_CHANNELS, | |
1504 | .dimms_per_channel = 2, | |
1505 | .rd_reg = dnv_rd_reg, | |
1506 | .get_registers = dnv_get_registers, | |
1507 | .check_ecc = dnv_check_ecc_active, | |
1508 | .mk_region = dnv_mk_region, | |
1509 | .get_dimm_config = dnv_get_dimm_config, | |
1510 | .pmi2mem = dnv_pmi2mem, | |
1511 | }; | |
1512 | ||
1513 | static const struct x86_cpu_id pnd2_cpuids[] = { | |
29842621 TG |
1514 | X86_MATCH_INTEL_FAM6_MODEL(ATOM_GOLDMONT, &apl_ops), |
1515 | X86_MATCH_INTEL_FAM6_MODEL(ATOM_GOLDMONT_D, &dnv_ops), | |
5c71ad17 TL |
1516 | { } |
1517 | }; | |
1518 | MODULE_DEVICE_TABLE(x86cpu, pnd2_cpuids); | |
1519 | ||
1520 | static int __init pnd2_init(void) | |
1521 | { | |
1522 | const struct x86_cpu_id *id; | |
301375e7 | 1523 | const char *owner; |
5c71ad17 TL |
1524 | int rc; |
1525 | ||
1526 | edac_dbg(2, "\n"); | |
1527 | ||
315bada6 JH |
1528 | if (ghes_get_devices()) |
1529 | return -EBUSY; | |
1530 | ||
301375e7 TK |
1531 | owner = edac_get_owner(); |
1532 | if (owner && strncmp(owner, EDAC_MOD_STR, sizeof(EDAC_MOD_STR))) | |
1533 | return -EBUSY; | |
1534 | ||
f0a029ff LT |
1535 | if (cpu_feature_enabled(X86_FEATURE_HYPERVISOR)) |
1536 | return -ENODEV; | |
1537 | ||
5c71ad17 TL |
1538 | id = x86_match_cpu(pnd2_cpuids); |
1539 | if (!id) | |
1540 | return -ENODEV; | |
1541 | ||
1542 | ops = (struct dunit_ops *)id->driver_data; | |
1543 | ||
3e5d2bd1 TL |
1544 | if (ops->type == APL) { |
1545 | p2sb_bus = pci_find_bus(0, 0); | |
1546 | if (!p2sb_bus) | |
1547 | return -ENODEV; | |
1548 | } | |
1549 | ||
5c71ad17 TL |
1550 | /* Ensure that the OPSTATE is set correctly for POLL or NMI */ |
1551 | opstate_init(); | |
1552 | ||
1553 | rc = pnd2_probe(); | |
1554 | if (rc < 0) { | |
1555 | pnd2_printk(KERN_ERR, "Failed to register device with error %d.\n", rc); | |
1556 | return rc; | |
1557 | } | |
1558 | ||
1559 | if (!pnd2_mci) | |
1560 | return -ENODEV; | |
1561 | ||
1562 | mce_register_decode_chain(&pnd2_mce_dec); | |
1563 | setup_pnd2_debug(); | |
1564 | ||
1565 | return 0; | |
1566 | } | |
1567 | ||
1568 | static void __exit pnd2_exit(void) | |
1569 | { | |
1570 | edac_dbg(2, "\n"); | |
1571 | teardown_pnd2_debug(); | |
1572 | mce_unregister_decode_chain(&pnd2_mce_dec); | |
1573 | pnd2_remove(); | |
1574 | } | |
1575 | ||
1576 | module_init(pnd2_init); | |
1577 | module_exit(pnd2_exit); | |
1578 | ||
1579 | module_param(edac_op_state, int, 0444); | |
1580 | MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll,1=NMI"); | |
1581 | ||
1582 | MODULE_LICENSE("GPL v2"); | |
1583 | MODULE_AUTHOR("Tony Luck"); | |
1584 | MODULE_DESCRIPTION("MC Driver for Intel SoC using Pondicherry memory controller"); |