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Merge remote-tracking branch 'regulator/fix/max77802' into regulator-linus
[mirror_ubuntu-artful-kernel.git] / drivers / platform / x86 / intel_telemetry_debugfs.c
1 /*
2 * Intel SOC Telemetry debugfs Driver: Currently supports APL
3 * Copyright (c) 2015, Intel Corporation.
4 * All Rights Reserved.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 * This file provides the debugfs interfaces for telemetry.
16 * /sys/kernel/debug/telemetry/pss_info: Shows Primary Control Sub-Sys Counters
17 * /sys/kernel/debug/telemetry/ioss_info: Shows IO Sub-System Counters
18 * /sys/kernel/debug/telemetry/soc_states: Shows SoC State
19 * /sys/kernel/debug/telemetry/pss_trace_verbosity: Read and Change Tracing
20 * Verbosity via firmware
21 * /sys/kernel/debug/telemetry/ioss_race_verbosity: Write and Change Tracing
22 * Verbosity via firmware
23 */
24 #include <linux/module.h>
25 #include <linux/init.h>
26 #include <linux/device.h>
27 #include <linux/debugfs.h>
28 #include <linux/seq_file.h>
29 #include <linux/io.h>
30 #include <linux/uaccess.h>
31 #include <linux/pci.h>
32 #include <linux/suspend.h>
33
34 #include <asm/cpu_device_id.h>
35 #include <asm/intel-family.h>
36 #include <asm/intel_pmc_ipc.h>
37 #include <asm/intel_punit_ipc.h>
38 #include <asm/intel_telemetry.h>
39
40 #define DRIVER_NAME "telemetry_soc_debugfs"
41 #define DRIVER_VERSION "1.0.0"
42
43 /* ApolloLake SoC Event-IDs */
44 #define TELEM_APL_PSS_PSTATES_ID 0x2802
45 #define TELEM_APL_PSS_IDLE_ID 0x2806
46 #define TELEM_APL_PCS_IDLE_BLOCKED_ID 0x2C00
47 #define TELEM_APL_PCS_S0IX_BLOCKED_ID 0x2C01
48 #define TELEM_APL_PSS_WAKEUP_ID 0x2C02
49 #define TELEM_APL_PSS_LTR_BLOCKING_ID 0x2C03
50
51 #define TELEM_APL_S0IX_TOTAL_OCC_ID 0x4000
52 #define TELEM_APL_S0IX_SHLW_OCC_ID 0x4001
53 #define TELEM_APL_S0IX_DEEP_OCC_ID 0x4002
54 #define TELEM_APL_S0IX_TOTAL_RES_ID 0x4800
55 #define TELEM_APL_S0IX_SHLW_RES_ID 0x4801
56 #define TELEM_APL_S0IX_DEEP_RES_ID 0x4802
57 #define TELEM_APL_D0IX_ID 0x581A
58 #define TELEM_APL_D3_ID 0x5819
59 #define TELEM_APL_PG_ID 0x5818
60
61 #define TELEM_INFO_SRAMEVTS_MASK 0xFF00
62 #define TELEM_INFO_SRAMEVTS_SHIFT 0x8
63 #define TELEM_SSRAM_READ_TIMEOUT 10
64
65 #define TELEM_MASK_BIT 1
66 #define TELEM_MASK_BYTE 0xFF
67 #define BYTES_PER_LONG 8
68 #define TELEM_APL_MASK_PCS_STATE 0xF
69
70 /* Max events in bitmap to check for */
71 #define TELEM_PSS_IDLE_EVTS 25
72 #define TELEM_PSS_IDLE_BLOCKED_EVTS 20
73 #define TELEM_PSS_S0IX_BLOCKED_EVTS 20
74 #define TELEM_PSS_S0IX_WAKEUP_EVTS 20
75 #define TELEM_PSS_LTR_BLOCKING_EVTS 20
76 #define TELEM_IOSS_DX_D0IX_EVTS 25
77 #define TELEM_IOSS_PG_EVTS 30
78
79 #define TELEM_EVT_LEN(x) (sizeof(x)/sizeof((x)[0]))
80
81 #define TELEM_DEBUGFS_CPU(model, data) \
82 { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, (unsigned long)&data}
83
84 #define TELEM_CHECK_AND_PARSE_EVTS(EVTID, EVTNUM, BUF, EVTLOG, EVTDAT, MASK) { \
85 if (evtlog[index].telem_evtid == (EVTID)) { \
86 for (idx = 0; idx < (EVTNUM); idx++) \
87 (BUF)[idx] = ((EVTLOG) >> (EVTDAT)[idx].bit_pos) & \
88 (MASK); \
89 continue; \
90 } \
91 }
92
93 #define TELEM_CHECK_AND_PARSE_CTRS(EVTID, CTR) { \
94 if (evtlog[index].telem_evtid == (EVTID)) { \
95 (CTR) = evtlog[index].telem_evtlog; \
96 continue; \
97 } \
98 }
99
100 static u8 suspend_prep_ok;
101 static u32 suspend_shlw_ctr_temp, suspend_deep_ctr_temp;
102 static u64 suspend_shlw_res_temp, suspend_deep_res_temp;
103
104 struct telemetry_susp_stats {
105 u32 shlw_swake_ctr;
106 u32 deep_swake_ctr;
107 u64 shlw_swake_res;
108 u64 deep_swake_res;
109 u32 shlw_ctr;
110 u32 deep_ctr;
111 u64 shlw_res;
112 u64 deep_res;
113 };
114
115 /* Bitmap definitions for default counters in APL */
116 struct telem_pss_idle_stateinfo {
117 const char *name;
118 u32 bit_pos;
119 };
120
121 static struct telem_pss_idle_stateinfo telem_apl_pss_idle_data[] = {
122 {"IA_CORE0_C1E", 0},
123 {"IA_CORE1_C1E", 1},
124 {"IA_CORE2_C1E", 2},
125 {"IA_CORE3_C1E", 3},
126 {"IA_CORE0_C6", 16},
127 {"IA_CORE1_C6", 17},
128 {"IA_CORE2_C6", 18},
129 {"IA_CORE3_C6", 19},
130 {"IA_MODULE0_C7", 32},
131 {"IA_MODULE1_C7", 33},
132 {"GT_RC6", 40},
133 {"IUNIT_PROCESSING_IDLE", 41},
134 {"FAR_MEM_IDLE", 43},
135 {"DISPLAY_IDLE", 44},
136 {"IUNIT_INPUT_SYSTEM_IDLE", 45},
137 {"PCS_STATUS", 60},
138 };
139
140 struct telem_pcs_blkd_info {
141 const char *name;
142 u32 bit_pos;
143 };
144
145 static struct telem_pcs_blkd_info telem_apl_pcs_idle_blkd_data[] = {
146 {"COMPUTE", 0},
147 {"MISC", 8},
148 {"MODULE_ACTIONS_PENDING", 16},
149 {"LTR", 24},
150 {"DISPLAY_WAKE", 32},
151 {"ISP_WAKE", 40},
152 {"PSF0_ACTIVE", 48},
153 };
154
155 static struct telem_pcs_blkd_info telem_apl_pcs_s0ix_blkd_data[] = {
156 {"LTR", 0},
157 {"IRTL", 8},
158 {"WAKE_DEADLINE_PENDING", 16},
159 {"DISPLAY", 24},
160 {"ISP", 32},
161 {"CORE", 40},
162 {"PMC", 48},
163 {"MISC", 56},
164 };
165
166 struct telem_pss_ltr_info {
167 const char *name;
168 u32 bit_pos;
169 };
170
171 static struct telem_pss_ltr_info telem_apl_pss_ltr_data[] = {
172 {"CORE_ACTIVE", 0},
173 {"MEM_UP", 8},
174 {"DFX", 16},
175 {"DFX_FORCE_LTR", 24},
176 {"DISPLAY", 32},
177 {"ISP", 40},
178 {"SOUTH", 48},
179 };
180
181 struct telem_pss_wakeup_info {
182 const char *name;
183 u32 bit_pos;
184 };
185
186 static struct telem_pss_wakeup_info telem_apl_pss_wakeup[] = {
187 {"IP_IDLE", 0},
188 {"DISPLAY_WAKE", 8},
189 {"VOLTAGE_REG_INT", 16},
190 {"DROWSY_TIMER (HOTPLUG)", 24},
191 {"CORE_WAKE", 32},
192 {"MISC_S0IX", 40},
193 {"MISC_ABORT", 56},
194 };
195
196 struct telem_ioss_d0ix_stateinfo {
197 const char *name;
198 u32 bit_pos;
199 };
200
201 static struct telem_ioss_d0ix_stateinfo telem_apl_ioss_d0ix_data[] = {
202 {"CSE", 0},
203 {"SCC2", 1},
204 {"GMM", 2},
205 {"XDCI", 3},
206 {"XHCI", 4},
207 {"ISH", 5},
208 {"AVS", 6},
209 {"PCIE0P1", 7},
210 {"PECI0P0", 8},
211 {"LPSS", 9},
212 {"SCC", 10},
213 {"PWM", 11},
214 {"PCIE1_P3", 12},
215 {"PCIE1_P2", 13},
216 {"PCIE1_P1", 14},
217 {"PCIE1_P0", 15},
218 {"CNV", 16},
219 {"SATA", 17},
220 {"PRTC", 18},
221 };
222
223 struct telem_ioss_pg_info {
224 const char *name;
225 u32 bit_pos;
226 };
227
228 static struct telem_ioss_pg_info telem_apl_ioss_pg_data[] = {
229 {"LPSS", 0},
230 {"SCC", 1},
231 {"P2SB", 2},
232 {"SCC2", 3},
233 {"GMM", 4},
234 {"PCIE0", 5},
235 {"XDCI", 6},
236 {"xHCI", 7},
237 {"CSE", 8},
238 {"SPI", 9},
239 {"AVSPGD4", 10},
240 {"AVSPGD3", 11},
241 {"AVSPGD2", 12},
242 {"AVSPGD1", 13},
243 {"ISH", 14},
244 {"EXI", 15},
245 {"NPKVRC", 16},
246 {"NPKVNN", 17},
247 {"CUNIT", 18},
248 {"FUSE_CTRL", 19},
249 {"PCIE1", 20},
250 {"CNV", 21},
251 {"LPC", 22},
252 {"SATA", 23},
253 {"SMB", 24},
254 {"PRTC", 25},
255 };
256
257
258 struct telemetry_debugfs_conf {
259 struct telemetry_susp_stats suspend_stats;
260 struct dentry *telemetry_dbg_dir;
261
262 /* Bitmap Data */
263 struct telem_ioss_d0ix_stateinfo *ioss_d0ix_data;
264 struct telem_pss_idle_stateinfo *pss_idle_data;
265 struct telem_pcs_blkd_info *pcs_idle_blkd_data;
266 struct telem_pcs_blkd_info *pcs_s0ix_blkd_data;
267 struct telem_pss_wakeup_info *pss_wakeup;
268 struct telem_pss_ltr_info *pss_ltr_data;
269 struct telem_ioss_pg_info *ioss_pg_data;
270 u8 pcs_idle_blkd_evts;
271 u8 pcs_s0ix_blkd_evts;
272 u8 pss_wakeup_evts;
273 u8 pss_idle_evts;
274 u8 pss_ltr_evts;
275 u8 ioss_d0ix_evts;
276 u8 ioss_pg_evts;
277
278 /* IDs */
279 u16 pss_ltr_blocking_id;
280 u16 pcs_idle_blkd_id;
281 u16 pcs_s0ix_blkd_id;
282 u16 s0ix_total_occ_id;
283 u16 s0ix_shlw_occ_id;
284 u16 s0ix_deep_occ_id;
285 u16 s0ix_total_res_id;
286 u16 s0ix_shlw_res_id;
287 u16 s0ix_deep_res_id;
288 u16 pss_wakeup_id;
289 u16 ioss_d0ix_id;
290 u16 pstates_id;
291 u16 pss_idle_id;
292 u16 ioss_d3_id;
293 u16 ioss_pg_id;
294 };
295
296 static struct telemetry_debugfs_conf *debugfs_conf;
297
298 static struct telemetry_debugfs_conf telem_apl_debugfs_conf = {
299 .pss_idle_data = telem_apl_pss_idle_data,
300 .pcs_idle_blkd_data = telem_apl_pcs_idle_blkd_data,
301 .pcs_s0ix_blkd_data = telem_apl_pcs_s0ix_blkd_data,
302 .pss_ltr_data = telem_apl_pss_ltr_data,
303 .pss_wakeup = telem_apl_pss_wakeup,
304 .ioss_d0ix_data = telem_apl_ioss_d0ix_data,
305 .ioss_pg_data = telem_apl_ioss_pg_data,
306
307 .pss_idle_evts = TELEM_EVT_LEN(telem_apl_pss_idle_data),
308 .pcs_idle_blkd_evts = TELEM_EVT_LEN(telem_apl_pcs_idle_blkd_data),
309 .pcs_s0ix_blkd_evts = TELEM_EVT_LEN(telem_apl_pcs_s0ix_blkd_data),
310 .pss_ltr_evts = TELEM_EVT_LEN(telem_apl_pss_ltr_data),
311 .pss_wakeup_evts = TELEM_EVT_LEN(telem_apl_pss_wakeup),
312 .ioss_d0ix_evts = TELEM_EVT_LEN(telem_apl_ioss_d0ix_data),
313 .ioss_pg_evts = TELEM_EVT_LEN(telem_apl_ioss_pg_data),
314
315 .pstates_id = TELEM_APL_PSS_PSTATES_ID,
316 .pss_idle_id = TELEM_APL_PSS_IDLE_ID,
317 .pcs_idle_blkd_id = TELEM_APL_PCS_IDLE_BLOCKED_ID,
318 .pcs_s0ix_blkd_id = TELEM_APL_PCS_S0IX_BLOCKED_ID,
319 .pss_wakeup_id = TELEM_APL_PSS_WAKEUP_ID,
320 .pss_ltr_blocking_id = TELEM_APL_PSS_LTR_BLOCKING_ID,
321 .s0ix_total_occ_id = TELEM_APL_S0IX_TOTAL_OCC_ID,
322 .s0ix_shlw_occ_id = TELEM_APL_S0IX_SHLW_OCC_ID,
323 .s0ix_deep_occ_id = TELEM_APL_S0IX_DEEP_OCC_ID,
324 .s0ix_total_res_id = TELEM_APL_S0IX_TOTAL_RES_ID,
325 .s0ix_shlw_res_id = TELEM_APL_S0IX_SHLW_RES_ID,
326 .s0ix_deep_res_id = TELEM_APL_S0IX_DEEP_RES_ID,
327 .ioss_d0ix_id = TELEM_APL_D0IX_ID,
328 .ioss_d3_id = TELEM_APL_D3_ID,
329 .ioss_pg_id = TELEM_APL_PG_ID,
330 };
331
332 static const struct x86_cpu_id telemetry_debugfs_cpu_ids[] = {
333 TELEM_DEBUGFS_CPU(INTEL_FAM6_ATOM_GOLDMONT, telem_apl_debugfs_conf),
334 {}
335 };
336
337 MODULE_DEVICE_TABLE(x86cpu, telemetry_debugfs_cpu_ids);
338
339 static int telemetry_debugfs_check_evts(void)
340 {
341 if ((debugfs_conf->pss_idle_evts > TELEM_PSS_IDLE_EVTS) ||
342 (debugfs_conf->pcs_idle_blkd_evts > TELEM_PSS_IDLE_BLOCKED_EVTS) ||
343 (debugfs_conf->pcs_s0ix_blkd_evts > TELEM_PSS_S0IX_BLOCKED_EVTS) ||
344 (debugfs_conf->pss_ltr_evts > TELEM_PSS_LTR_BLOCKING_EVTS) ||
345 (debugfs_conf->pss_wakeup_evts > TELEM_PSS_S0IX_WAKEUP_EVTS) ||
346 (debugfs_conf->ioss_d0ix_evts > TELEM_IOSS_DX_D0IX_EVTS) ||
347 (debugfs_conf->ioss_pg_evts > TELEM_IOSS_PG_EVTS))
348 return -EINVAL;
349
350 return 0;
351 }
352
353 static int telem_pss_states_show(struct seq_file *s, void *unused)
354 {
355 struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS];
356 struct telemetry_debugfs_conf *conf = debugfs_conf;
357 const char *name[TELEM_MAX_OS_ALLOCATED_EVENTS];
358 u32 pcs_idle_blkd[TELEM_PSS_IDLE_BLOCKED_EVTS],
359 pcs_s0ix_blkd[TELEM_PSS_S0IX_BLOCKED_EVTS],
360 pss_s0ix_wakeup[TELEM_PSS_S0IX_WAKEUP_EVTS],
361 pss_ltr_blkd[TELEM_PSS_LTR_BLOCKING_EVTS],
362 pss_idle[TELEM_PSS_IDLE_EVTS];
363 int index, idx, ret, err = 0;
364 u64 pstates = 0;
365
366 ret = telemetry_read_eventlog(TELEM_PSS, evtlog,
367 TELEM_MAX_OS_ALLOCATED_EVENTS);
368 if (ret < 0)
369 return ret;
370
371 err = telemetry_get_evtname(TELEM_PSS, name,
372 TELEM_MAX_OS_ALLOCATED_EVENTS);
373 if (err < 0)
374 return err;
375
376 seq_puts(s, "\n----------------------------------------------------\n");
377 seq_puts(s, "\tPSS TELEM EVENTLOG (Residency = field/19.2 us\n");
378 seq_puts(s, "----------------------------------------------------\n");
379 for (index = 0; index < ret; index++) {
380 seq_printf(s, "%-32s %llu\n",
381 name[index], evtlog[index].telem_evtlog);
382
383 /* Fetch PSS IDLE State */
384 if (evtlog[index].telem_evtid == conf->pss_idle_id) {
385 pss_idle[conf->pss_idle_evts - 1] =
386 (evtlog[index].telem_evtlog >>
387 conf->pss_idle_data[conf->pss_idle_evts - 1].bit_pos) &
388 TELEM_APL_MASK_PCS_STATE;
389 }
390
391
392 TELEM_CHECK_AND_PARSE_EVTS(conf->pss_idle_id,
393 conf->pss_idle_evts - 1,
394 pss_idle, evtlog[index].telem_evtlog,
395 conf->pss_idle_data, TELEM_MASK_BIT);
396
397 TELEM_CHECK_AND_PARSE_EVTS(conf->pcs_idle_blkd_id,
398 conf->pcs_idle_blkd_evts,
399 pcs_idle_blkd,
400 evtlog[index].telem_evtlog,
401 conf->pcs_idle_blkd_data,
402 TELEM_MASK_BYTE);
403
404 TELEM_CHECK_AND_PARSE_EVTS(conf->pcs_s0ix_blkd_id,
405 conf->pcs_s0ix_blkd_evts,
406 pcs_s0ix_blkd,
407 evtlog[index].telem_evtlog,
408 conf->pcs_s0ix_blkd_data,
409 TELEM_MASK_BYTE);
410
411
412 TELEM_CHECK_AND_PARSE_EVTS(conf->pss_wakeup_id,
413 conf->pss_wakeup_evts,
414 pss_s0ix_wakeup,
415 evtlog[index].telem_evtlog,
416 conf->pss_wakeup, TELEM_MASK_BYTE);
417
418 TELEM_CHECK_AND_PARSE_EVTS(conf->pss_ltr_blocking_id,
419 conf->pss_ltr_evts, pss_ltr_blkd,
420 evtlog[index].telem_evtlog,
421 conf->pss_ltr_data, TELEM_MASK_BYTE);
422
423 if (evtlog[index].telem_evtid == debugfs_conf->pstates_id)
424 pstates = evtlog[index].telem_evtlog;
425 }
426
427 seq_puts(s, "\n--------------------------------------\n");
428 seq_puts(s, "PStates\n");
429 seq_puts(s, "--------------------------------------\n");
430 seq_puts(s, "Domain\t\t\t\tFreq(Mhz)\n");
431 seq_printf(s, " IA\t\t\t\t %llu\n GT\t\t\t\t %llu\n",
432 (pstates & TELEM_MASK_BYTE)*100,
433 ((pstates >> 8) & TELEM_MASK_BYTE)*50/3);
434
435 seq_printf(s, " IUNIT\t\t\t\t %llu\n SA\t\t\t\t %llu\n",
436 ((pstates >> 16) & TELEM_MASK_BYTE)*25,
437 ((pstates >> 24) & TELEM_MASK_BYTE)*50/3);
438
439 seq_puts(s, "\n--------------------------------------\n");
440 seq_puts(s, "PSS IDLE Status\n");
441 seq_puts(s, "--------------------------------------\n");
442 seq_puts(s, "Device\t\t\t\t\tIDLE\n");
443 for (index = 0; index < debugfs_conf->pss_idle_evts; index++) {
444 seq_printf(s, "%-32s\t%u\n",
445 debugfs_conf->pss_idle_data[index].name,
446 pss_idle[index]);
447 }
448
449 seq_puts(s, "\n--------------------------------------\n");
450 seq_puts(s, "PSS Idle blkd Status (~1ms saturating bucket)\n");
451 seq_puts(s, "--------------------------------------\n");
452 seq_puts(s, "Blocker\t\t\t\t\tCount\n");
453 for (index = 0; index < debugfs_conf->pcs_idle_blkd_evts; index++) {
454 seq_printf(s, "%-32s\t%u\n",
455 debugfs_conf->pcs_idle_blkd_data[index].name,
456 pcs_idle_blkd[index]);
457 }
458
459 seq_puts(s, "\n--------------------------------------\n");
460 seq_puts(s, "PSS S0ix blkd Status (~1ms saturating bucket)\n");
461 seq_puts(s, "--------------------------------------\n");
462 seq_puts(s, "Blocker\t\t\t\t\tCount\n");
463 for (index = 0; index < debugfs_conf->pcs_s0ix_blkd_evts; index++) {
464 seq_printf(s, "%-32s\t%u\n",
465 debugfs_conf->pcs_s0ix_blkd_data[index].name,
466 pcs_s0ix_blkd[index]);
467 }
468
469 seq_puts(s, "\n--------------------------------------\n");
470 seq_puts(s, "LTR Blocking Status (~1ms saturating bucket)\n");
471 seq_puts(s, "--------------------------------------\n");
472 seq_puts(s, "Blocker\t\t\t\t\tCount\n");
473 for (index = 0; index < debugfs_conf->pss_ltr_evts; index++) {
474 seq_printf(s, "%-32s\t%u\n",
475 debugfs_conf->pss_ltr_data[index].name,
476 pss_s0ix_wakeup[index]);
477 }
478
479 seq_puts(s, "\n--------------------------------------\n");
480 seq_puts(s, "Wakes Status (~1ms saturating bucket)\n");
481 seq_puts(s, "--------------------------------------\n");
482 seq_puts(s, "Wakes\t\t\t\t\tCount\n");
483 for (index = 0; index < debugfs_conf->pss_wakeup_evts; index++) {
484 seq_printf(s, "%-32s\t%u\n",
485 debugfs_conf->pss_wakeup[index].name,
486 pss_ltr_blkd[index]);
487 }
488
489 return 0;
490 }
491
492 static int telem_pss_state_open(struct inode *inode, struct file *file)
493 {
494 return single_open(file, telem_pss_states_show, inode->i_private);
495 }
496
497 static const struct file_operations telem_pss_ops = {
498 .open = telem_pss_state_open,
499 .read = seq_read,
500 .llseek = seq_lseek,
501 .release = single_release,
502 };
503
504
505 static int telem_ioss_states_show(struct seq_file *s, void *unused)
506 {
507 struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS];
508 const char *name[TELEM_MAX_OS_ALLOCATED_EVENTS];
509 int index, ret, err;
510
511 ret = telemetry_read_eventlog(TELEM_IOSS, evtlog,
512 TELEM_MAX_OS_ALLOCATED_EVENTS);
513 if (ret < 0)
514 return ret;
515
516 err = telemetry_get_evtname(TELEM_IOSS, name,
517 TELEM_MAX_OS_ALLOCATED_EVENTS);
518 if (err < 0)
519 return err;
520
521 seq_puts(s, "--------------------------------------\n");
522 seq_puts(s, "\tI0SS TELEMETRY EVENTLOG\n");
523 seq_puts(s, "--------------------------------------\n");
524 for (index = 0; index < ret; index++) {
525 seq_printf(s, "%-32s 0x%llx\n",
526 name[index], evtlog[index].telem_evtlog);
527 }
528
529 return 0;
530 }
531
532 static int telem_ioss_state_open(struct inode *inode, struct file *file)
533 {
534 return single_open(file, telem_ioss_states_show, inode->i_private);
535 }
536
537 static const struct file_operations telem_ioss_ops = {
538 .open = telem_ioss_state_open,
539 .read = seq_read,
540 .llseek = seq_lseek,
541 .release = single_release,
542 };
543
544 static int telem_soc_states_show(struct seq_file *s, void *unused)
545 {
546 u32 d3_sts[TELEM_IOSS_DX_D0IX_EVTS], d0ix_sts[TELEM_IOSS_DX_D0IX_EVTS];
547 u32 pg_sts[TELEM_IOSS_PG_EVTS], pss_idle[TELEM_PSS_IDLE_EVTS];
548 struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS];
549 u32 s0ix_total_ctr = 0, s0ix_shlw_ctr = 0, s0ix_deep_ctr = 0;
550 u64 s0ix_total_res = 0, s0ix_shlw_res = 0, s0ix_deep_res = 0;
551 struct telemetry_debugfs_conf *conf = debugfs_conf;
552 struct pci_dev *dev = NULL;
553 int index, idx, ret;
554 u32 d3_state;
555 u16 pmcsr;
556
557 ret = telemetry_read_eventlog(TELEM_IOSS, evtlog,
558 TELEM_MAX_OS_ALLOCATED_EVENTS);
559 if (ret < 0)
560 return ret;
561
562 for (index = 0; index < ret; index++) {
563 TELEM_CHECK_AND_PARSE_EVTS(conf->ioss_d3_id,
564 conf->ioss_d0ix_evts,
565 d3_sts, evtlog[index].telem_evtlog,
566 conf->ioss_d0ix_data,
567 TELEM_MASK_BIT);
568
569 TELEM_CHECK_AND_PARSE_EVTS(conf->ioss_pg_id, conf->ioss_pg_evts,
570 pg_sts, evtlog[index].telem_evtlog,
571 conf->ioss_pg_data, TELEM_MASK_BIT);
572
573 TELEM_CHECK_AND_PARSE_EVTS(conf->ioss_d0ix_id,
574 conf->ioss_d0ix_evts,
575 d0ix_sts, evtlog[index].telem_evtlog,
576 conf->ioss_d0ix_data,
577 TELEM_MASK_BIT);
578
579 TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_total_occ_id,
580 s0ix_total_ctr);
581
582 TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_shlw_occ_id,
583 s0ix_shlw_ctr);
584
585 TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_deep_occ_id,
586 s0ix_deep_ctr);
587
588 TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_total_res_id,
589 s0ix_total_res);
590
591 TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_shlw_res_id,
592 s0ix_shlw_res);
593
594 TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_deep_res_id,
595 s0ix_deep_res);
596 }
597
598 seq_puts(s, "\n---------------------------------------------------\n");
599 seq_puts(s, "S0IX Type\t\t\t Occurrence\t\t Residency(us)\n");
600 seq_puts(s, "---------------------------------------------------\n");
601
602 seq_printf(s, "S0IX Shallow\t\t\t %10u\t %10llu\n",
603 s0ix_shlw_ctr -
604 conf->suspend_stats.shlw_ctr -
605 conf->suspend_stats.shlw_swake_ctr,
606 (u64)((s0ix_shlw_res -
607 conf->suspend_stats.shlw_res -
608 conf->suspend_stats.shlw_swake_res)*10/192));
609
610 seq_printf(s, "S0IX Deep\t\t\t %10u\t %10llu\n",
611 s0ix_deep_ctr -
612 conf->suspend_stats.deep_ctr -
613 conf->suspend_stats.deep_swake_ctr,
614 (u64)((s0ix_deep_res -
615 conf->suspend_stats.deep_res -
616 conf->suspend_stats.deep_swake_res)*10/192));
617
618 seq_printf(s, "Suspend(With S0ixShallow)\t %10u\t %10llu\n",
619 conf->suspend_stats.shlw_ctr,
620 (u64)(conf->suspend_stats.shlw_res*10)/192);
621
622 seq_printf(s, "Suspend(With S0ixDeep)\t\t %10u\t %10llu\n",
623 conf->suspend_stats.deep_ctr,
624 (u64)(conf->suspend_stats.deep_res*10)/192);
625
626 seq_printf(s, "Suspend(With Shallow-Wakes)\t %10u\t %10llu\n",
627 conf->suspend_stats.shlw_swake_ctr +
628 conf->suspend_stats.deep_swake_ctr,
629 (u64)((conf->suspend_stats.shlw_swake_res +
630 conf->suspend_stats.deep_swake_res)*10/192));
631
632 seq_printf(s, "S0IX+Suspend Total\t\t %10u\t %10llu\n", s0ix_total_ctr,
633 (u64)(s0ix_total_res*10/192));
634 seq_puts(s, "\n-------------------------------------------------\n");
635 seq_puts(s, "\t\tDEVICE STATES\n");
636 seq_puts(s, "-------------------------------------------------\n");
637
638 for_each_pci_dev(dev) {
639 pci_read_config_word(dev, dev->pm_cap + PCI_PM_CTRL, &pmcsr);
640 d3_state = ((pmcsr & PCI_PM_CTRL_STATE_MASK) ==
641 (__force int)PCI_D3hot) ? 1 : 0;
642
643 seq_printf(s, "pci %04x %04X %s %20.20s: ",
644 dev->vendor, dev->device, dev_name(&dev->dev),
645 dev_driver_string(&dev->dev));
646 seq_printf(s, " d3:%x\n", d3_state);
647 }
648
649 seq_puts(s, "\n--------------------------------------\n");
650 seq_puts(s, "D3/D0i3 Status\n");
651 seq_puts(s, "--------------------------------------\n");
652 seq_puts(s, "Block\t\t D3\t D0i3\n");
653 for (index = 0; index < conf->ioss_d0ix_evts; index++) {
654 seq_printf(s, "%-10s\t %u\t %u\n",
655 conf->ioss_d0ix_data[index].name,
656 d3_sts[index], d0ix_sts[index]);
657 }
658
659 seq_puts(s, "\n--------------------------------------\n");
660 seq_puts(s, "South Complex PowerGate Status\n");
661 seq_puts(s, "--------------------------------------\n");
662 seq_puts(s, "Device\t\t PG\n");
663 for (index = 0; index < conf->ioss_pg_evts; index++) {
664 seq_printf(s, "%-10s\t %u\n",
665 conf->ioss_pg_data[index].name,
666 pg_sts[index]);
667 }
668
669 evtlog->telem_evtid = conf->pss_idle_id;
670 ret = telemetry_read_events(TELEM_PSS, evtlog, 1);
671 if (ret < 0)
672 return ret;
673
674 seq_puts(s, "\n-----------------------------------------\n");
675 seq_puts(s, "North Idle Status\n");
676 seq_puts(s, "-----------------------------------------\n");
677 for (idx = 0; idx < conf->pss_idle_evts - 1; idx++) {
678 pss_idle[idx] = (evtlog->telem_evtlog >>
679 conf->pss_idle_data[idx].bit_pos) &
680 TELEM_MASK_BIT;
681 }
682
683 pss_idle[idx] = (evtlog->telem_evtlog >>
684 conf->pss_idle_data[idx].bit_pos) &
685 TELEM_APL_MASK_PCS_STATE;
686
687 for (index = 0; index < conf->pss_idle_evts; index++) {
688 seq_printf(s, "%-30s %u\n",
689 conf->pss_idle_data[index].name,
690 pss_idle[index]);
691 }
692
693 seq_puts(s, "\nPCS_STATUS Code\n");
694 seq_puts(s, "0:C0 1:C1 2:C1_DN_WT_DEV 3:C2 4:C2_WT_DE_MEM_UP\n");
695 seq_puts(s, "5:C2_WT_DE_MEM_DOWN 6:C2_UP_WT_DEV 7:C2_DN 8:C2_VOA\n");
696 seq_puts(s, "9:C2_VOA_UP 10:S0IX_PRE 11:S0IX\n");
697
698 return 0;
699 }
700
701 static int telem_soc_state_open(struct inode *inode, struct file *file)
702 {
703 return single_open(file, telem_soc_states_show, inode->i_private);
704 }
705
706 static const struct file_operations telem_socstate_ops = {
707 .open = telem_soc_state_open,
708 .read = seq_read,
709 .llseek = seq_lseek,
710 .release = single_release,
711 };
712
713 static int telem_pss_trc_verb_show(struct seq_file *s, void *unused)
714 {
715 u32 verbosity;
716 int err;
717
718 err = telemetry_get_trace_verbosity(TELEM_PSS, &verbosity);
719 if (err) {
720 pr_err("Get PSS Trace Verbosity Failed with Error %d\n", err);
721 return -EFAULT;
722 }
723
724 seq_printf(s, "PSS Trace Verbosity %u\n", verbosity);
725 return 0;
726 }
727
728 static ssize_t telem_pss_trc_verb_write(struct file *file,
729 const char __user *userbuf,
730 size_t count, loff_t *ppos)
731 {
732 u32 verbosity;
733 int err;
734
735 if (kstrtou32_from_user(userbuf, count, 0, &verbosity))
736 return -EFAULT;
737
738 err = telemetry_set_trace_verbosity(TELEM_PSS, verbosity);
739 if (err) {
740 pr_err("Changing PSS Trace Verbosity Failed. Error %d\n", err);
741 count = err;
742 }
743
744 return count;
745 }
746
747 static int telem_pss_trc_verb_open(struct inode *inode, struct file *file)
748 {
749 return single_open(file, telem_pss_trc_verb_show, inode->i_private);
750 }
751
752 static const struct file_operations telem_pss_trc_verb_ops = {
753 .open = telem_pss_trc_verb_open,
754 .read = seq_read,
755 .write = telem_pss_trc_verb_write,
756 .llseek = seq_lseek,
757 .release = single_release,
758 };
759
760
761 static int telem_ioss_trc_verb_show(struct seq_file *s, void *unused)
762 {
763 u32 verbosity;
764 int err;
765
766 err = telemetry_get_trace_verbosity(TELEM_IOSS, &verbosity);
767 if (err) {
768 pr_err("Get IOSS Trace Verbosity Failed with Error %d\n", err);
769 return -EFAULT;
770 }
771
772 seq_printf(s, "IOSS Trace Verbosity %u\n", verbosity);
773 return 0;
774 }
775
776 static ssize_t telem_ioss_trc_verb_write(struct file *file,
777 const char __user *userbuf,
778 size_t count, loff_t *ppos)
779 {
780 u32 verbosity;
781 int err;
782
783 if (kstrtou32_from_user(userbuf, count, 0, &verbosity))
784 return -EFAULT;
785
786 err = telemetry_set_trace_verbosity(TELEM_IOSS, verbosity);
787 if (err) {
788 pr_err("Changing IOSS Trace Verbosity Failed. Error %d\n", err);
789 count = err;
790 }
791
792 return count;
793 }
794
795 static int telem_ioss_trc_verb_open(struct inode *inode, struct file *file)
796 {
797 return single_open(file, telem_ioss_trc_verb_show, inode->i_private);
798 }
799
800 static const struct file_operations telem_ioss_trc_verb_ops = {
801 .open = telem_ioss_trc_verb_open,
802 .read = seq_read,
803 .write = telem_ioss_trc_verb_write,
804 .llseek = seq_lseek,
805 .release = single_release,
806 };
807
808 static int pm_suspend_prep_cb(void)
809 {
810 struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS];
811 struct telemetry_debugfs_conf *conf = debugfs_conf;
812 int ret, index;
813
814 ret = telemetry_raw_read_eventlog(TELEM_IOSS, evtlog,
815 TELEM_MAX_OS_ALLOCATED_EVENTS);
816 if (ret < 0) {
817 suspend_prep_ok = 0;
818 goto out;
819 }
820
821 for (index = 0; index < ret; index++) {
822
823 TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_shlw_occ_id,
824 suspend_shlw_ctr_temp);
825
826 TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_deep_occ_id,
827 suspend_deep_ctr_temp);
828
829 TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_shlw_res_id,
830 suspend_shlw_res_temp);
831
832 TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_deep_res_id,
833 suspend_deep_res_temp);
834 }
835 suspend_prep_ok = 1;
836 out:
837 return NOTIFY_OK;
838 }
839
840 static int pm_suspend_exit_cb(void)
841 {
842 struct telemetry_evtlog evtlog[TELEM_MAX_OS_ALLOCATED_EVENTS];
843 static u32 suspend_shlw_ctr_exit, suspend_deep_ctr_exit;
844 static u64 suspend_shlw_res_exit, suspend_deep_res_exit;
845 struct telemetry_debugfs_conf *conf = debugfs_conf;
846 int ret, index;
847
848 if (!suspend_prep_ok)
849 goto out;
850
851 ret = telemetry_raw_read_eventlog(TELEM_IOSS, evtlog,
852 TELEM_MAX_OS_ALLOCATED_EVENTS);
853 if (ret < 0)
854 goto out;
855
856 for (index = 0; index < ret; index++) {
857 TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_shlw_occ_id,
858 suspend_shlw_ctr_exit);
859
860 TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_deep_occ_id,
861 suspend_deep_ctr_exit);
862
863 TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_shlw_res_id,
864 suspend_shlw_res_exit);
865
866 TELEM_CHECK_AND_PARSE_CTRS(conf->s0ix_deep_res_id,
867 suspend_deep_res_exit);
868 }
869
870 if ((suspend_shlw_ctr_exit < suspend_shlw_ctr_temp) ||
871 (suspend_deep_ctr_exit < suspend_deep_ctr_temp) ||
872 (suspend_shlw_res_exit < suspend_shlw_res_temp) ||
873 (suspend_deep_res_exit < suspend_deep_res_temp)) {
874 pr_err("Wrong s0ix counters detected\n");
875 goto out;
876 }
877
878 suspend_shlw_ctr_exit -= suspend_shlw_ctr_temp;
879 suspend_deep_ctr_exit -= suspend_deep_ctr_temp;
880 suspend_shlw_res_exit -= suspend_shlw_res_temp;
881 suspend_deep_res_exit -= suspend_deep_res_temp;
882
883 if (suspend_shlw_ctr_exit == 1) {
884 conf->suspend_stats.shlw_ctr +=
885 suspend_shlw_ctr_exit;
886
887 conf->suspend_stats.shlw_res +=
888 suspend_shlw_res_exit;
889 }
890 /* Shallow Wakes Case */
891 else if (suspend_shlw_ctr_exit > 1) {
892 conf->suspend_stats.shlw_swake_ctr +=
893 suspend_shlw_ctr_exit;
894
895 conf->suspend_stats.shlw_swake_res +=
896 suspend_shlw_res_exit;
897 }
898
899 if (suspend_deep_ctr_exit == 1) {
900 conf->suspend_stats.deep_ctr +=
901 suspend_deep_ctr_exit;
902
903 conf->suspend_stats.deep_res +=
904 suspend_deep_res_exit;
905 }
906
907 /* Shallow Wakes Case */
908 else if (suspend_deep_ctr_exit > 1) {
909 conf->suspend_stats.deep_swake_ctr +=
910 suspend_deep_ctr_exit;
911
912 conf->suspend_stats.deep_swake_res +=
913 suspend_deep_res_exit;
914 }
915
916 out:
917 suspend_prep_ok = 0;
918 return NOTIFY_OK;
919 }
920
921 static int pm_notification(struct notifier_block *this,
922 unsigned long event, void *ptr)
923 {
924 switch (event) {
925 case PM_SUSPEND_PREPARE:
926 return pm_suspend_prep_cb();
927 case PM_POST_SUSPEND:
928 return pm_suspend_exit_cb();
929 }
930
931 return NOTIFY_DONE;
932 }
933
934 static struct notifier_block pm_notifier = {
935 .notifier_call = pm_notification,
936 };
937
938 static int __init telemetry_debugfs_init(void)
939 {
940 const struct x86_cpu_id *id;
941 int err = -ENOMEM;
942 struct dentry *f;
943
944 /* Only APL supported for now */
945 id = x86_match_cpu(telemetry_debugfs_cpu_ids);
946 if (!id)
947 return -ENODEV;
948
949 debugfs_conf = (struct telemetry_debugfs_conf *)id->driver_data;
950
951 err = telemetry_pltconfig_valid();
952 if (err < 0)
953 return -ENODEV;
954
955 err = telemetry_debugfs_check_evts();
956 if (err < 0)
957 return -EINVAL;
958
959 register_pm_notifier(&pm_notifier);
960
961 debugfs_conf->telemetry_dbg_dir = debugfs_create_dir("telemetry", NULL);
962 if (!debugfs_conf->telemetry_dbg_dir) {
963 err = -ENOMEM;
964 goto out_pm;
965 }
966
967 f = debugfs_create_file("pss_info", S_IFREG | S_IRUGO,
968 debugfs_conf->telemetry_dbg_dir, NULL,
969 &telem_pss_ops);
970 if (!f) {
971 pr_err("pss_sample_info debugfs register failed\n");
972 goto out;
973 }
974
975 f = debugfs_create_file("ioss_info", S_IFREG | S_IRUGO,
976 debugfs_conf->telemetry_dbg_dir, NULL,
977 &telem_ioss_ops);
978 if (!f) {
979 pr_err("ioss_sample_info debugfs register failed\n");
980 goto out;
981 }
982
983 f = debugfs_create_file("soc_states", S_IFREG | S_IRUGO,
984 debugfs_conf->telemetry_dbg_dir,
985 NULL, &telem_socstate_ops);
986 if (!f) {
987 pr_err("ioss_sample_info debugfs register failed\n");
988 goto out;
989 }
990
991 f = debugfs_create_file("pss_trace_verbosity", S_IFREG | S_IRUGO,
992 debugfs_conf->telemetry_dbg_dir, NULL,
993 &telem_pss_trc_verb_ops);
994 if (!f) {
995 pr_err("pss_trace_verbosity debugfs register failed\n");
996 goto out;
997 }
998
999 f = debugfs_create_file("ioss_trace_verbosity", S_IFREG | S_IRUGO,
1000 debugfs_conf->telemetry_dbg_dir, NULL,
1001 &telem_ioss_trc_verb_ops);
1002 if (!f) {
1003 pr_err("ioss_trace_verbosity debugfs register failed\n");
1004 goto out;
1005 }
1006
1007 return 0;
1008
1009 out:
1010 debugfs_remove_recursive(debugfs_conf->telemetry_dbg_dir);
1011 debugfs_conf->telemetry_dbg_dir = NULL;
1012 out_pm:
1013 unregister_pm_notifier(&pm_notifier);
1014
1015 return err;
1016 }
1017
1018 static void __exit telemetry_debugfs_exit(void)
1019 {
1020 debugfs_remove_recursive(debugfs_conf->telemetry_dbg_dir);
1021 debugfs_conf->telemetry_dbg_dir = NULL;
1022 unregister_pm_notifier(&pm_notifier);
1023 }
1024
1025 late_initcall(telemetry_debugfs_init);
1026 module_exit(telemetry_debugfs_exit);
1027
1028 MODULE_AUTHOR("Souvik Kumar Chakravarty <souvik.k.chakravarty@intel.com>");
1029 MODULE_DESCRIPTION("Intel SoC Telemetry debugfs Interface");
1030 MODULE_VERSION(DRIVER_VERSION);
1031 MODULE_LICENSE("GPL");
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