2 * Intel SOC Telemetry debugfs Driver: Currently supports APL
3 * Copyright (c) 2015, Intel Corporation.
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.
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
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
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>
30 #include <linux/uaccess.h>
31 #include <linux/pci.h>
32 #include <linux/suspend.h>
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>
40 #define DRIVER_NAME "telemetry_soc_debugfs"
41 #define DRIVER_VERSION "1.0.0"
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
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
61 #define TELEM_INFO_SRAMEVTS_MASK 0xFF00
62 #define TELEM_INFO_SRAMEVTS_SHIFT 0x8
63 #define TELEM_SSRAM_READ_TIMEOUT 10
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
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
79 #define TELEM_EVT_LEN(x) (sizeof(x)/sizeof((x)[0]))
81 #define TELEM_DEBUGFS_CPU(model, data) \
82 { X86_VENDOR_INTEL, 6, model, X86_FEATURE_ANY, (unsigned long)&data}
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) & \
93 #define TELEM_CHECK_AND_PARSE_CTRS(EVTID, CTR) { \
94 if (evtlog[index].telem_evtid == (EVTID)) { \
95 (CTR) = evtlog[index].telem_evtlog; \
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
;
104 struct telemetry_susp_stats
{
115 /* Bitmap definitions for default counters in APL */
116 struct telem_pss_idle_stateinfo
{
121 static struct telem_pss_idle_stateinfo telem_apl_pss_idle_data
[] = {
130 {"IA_MODULE0_C7", 32},
131 {"IA_MODULE1_C7", 33},
133 {"IUNIT_PROCESSING_IDLE", 41},
134 {"FAR_MEM_IDLE", 43},
135 {"DISPLAY_IDLE", 44},
136 {"IUNIT_INPUT_SYSTEM_IDLE", 45},
140 struct telem_pcs_blkd_info
{
145 static struct telem_pcs_blkd_info telem_apl_pcs_idle_blkd_data
[] = {
148 {"MODULE_ACTIONS_PENDING", 16},
150 {"DISPLAY_WAKE", 32},
155 static struct telem_pcs_blkd_info telem_apl_pcs_s0ix_blkd_data
[] = {
158 {"WAKE_DEADLINE_PENDING", 16},
166 struct telem_pss_ltr_info
{
171 static struct telem_pss_ltr_info telem_apl_pss_ltr_data
[] = {
175 {"DFX_FORCE_LTR", 24},
181 struct telem_pss_wakeup_info
{
186 static struct telem_pss_wakeup_info telem_apl_pss_wakeup
[] = {
189 {"VOLTAGE_REG_INT", 16},
190 {"DROWSY_TIMER (HOTPLUG)", 24},
196 struct telem_ioss_d0ix_stateinfo
{
201 static struct telem_ioss_d0ix_stateinfo telem_apl_ioss_d0ix_data
[] = {
223 struct telem_ioss_pg_info
{
228 static struct telem_ioss_pg_info telem_apl_ioss_pg_data
[] = {
258 struct telemetry_debugfs_conf
{
259 struct telemetry_susp_stats suspend_stats
;
260 struct dentry
*telemetry_dbg_dir
;
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
;
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
;
296 static struct telemetry_debugfs_conf
*debugfs_conf
;
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
,
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
),
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
,
332 static const struct x86_cpu_id telemetry_debugfs_cpu_ids
[] = {
333 TELEM_DEBUGFS_CPU(INTEL_FAM6_ATOM_GOLDMONT
, telem_apl_debugfs_conf
),
337 MODULE_DEVICE_TABLE(x86cpu
, telemetry_debugfs_cpu_ids
);
339 static int telemetry_debugfs_check_evts(void)
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
))
353 static int telem_pss_states_show(struct seq_file
*s
, void *unused
)
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;
366 ret
= telemetry_read_eventlog(TELEM_PSS
, evtlog
,
367 TELEM_MAX_OS_ALLOCATED_EVENTS
);
371 err
= telemetry_get_evtname(TELEM_PSS
, name
,
372 TELEM_MAX_OS_ALLOCATED_EVENTS
);
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
);
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
;
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
);
397 TELEM_CHECK_AND_PARSE_EVTS(conf
->pcs_idle_blkd_id
,
398 conf
->pcs_idle_blkd_evts
,
400 evtlog
[index
].telem_evtlog
,
401 conf
->pcs_idle_blkd_data
,
404 TELEM_CHECK_AND_PARSE_EVTS(conf
->pcs_s0ix_blkd_id
,
405 conf
->pcs_s0ix_blkd_evts
,
407 evtlog
[index
].telem_evtlog
,
408 conf
->pcs_s0ix_blkd_data
,
412 TELEM_CHECK_AND_PARSE_EVTS(conf
->pss_wakeup_id
,
413 conf
->pss_wakeup_evts
,
415 evtlog
[index
].telem_evtlog
,
416 conf
->pss_wakeup
, TELEM_MASK_BYTE
);
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
);
423 if (evtlog
[index
].telem_evtid
== debugfs_conf
->pstates_id
)
424 pstates
= evtlog
[index
].telem_evtlog
;
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);
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);
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
,
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
]);
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
]);
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
]);
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
]);
492 static int telem_pss_state_open(struct inode
*inode
, struct file
*file
)
494 return single_open(file
, telem_pss_states_show
, inode
->i_private
);
497 static const struct file_operations telem_pss_ops
= {
498 .open
= telem_pss_state_open
,
501 .release
= single_release
,
505 static int telem_ioss_states_show(struct seq_file
*s
, void *unused
)
507 struct telemetry_evtlog evtlog
[TELEM_MAX_OS_ALLOCATED_EVENTS
];
508 const char *name
[TELEM_MAX_OS_ALLOCATED_EVENTS
];
511 ret
= telemetry_read_eventlog(TELEM_IOSS
, evtlog
,
512 TELEM_MAX_OS_ALLOCATED_EVENTS
);
516 err
= telemetry_get_evtname(TELEM_IOSS
, name
,
517 TELEM_MAX_OS_ALLOCATED_EVENTS
);
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
);
532 static int telem_ioss_state_open(struct inode
*inode
, struct file
*file
)
534 return single_open(file
, telem_ioss_states_show
, inode
->i_private
);
537 static const struct file_operations telem_ioss_ops
= {
538 .open
= telem_ioss_state_open
,
541 .release
= single_release
,
544 static int telem_soc_states_show(struct seq_file
*s
, void *unused
)
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
;
557 ret
= telemetry_read_eventlog(TELEM_IOSS
, evtlog
,
558 TELEM_MAX_OS_ALLOCATED_EVENTS
);
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
,
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
);
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
,
579 TELEM_CHECK_AND_PARSE_CTRS(conf
->s0ix_total_occ_id
,
582 TELEM_CHECK_AND_PARSE_CTRS(conf
->s0ix_shlw_occ_id
,
585 TELEM_CHECK_AND_PARSE_CTRS(conf
->s0ix_deep_occ_id
,
588 TELEM_CHECK_AND_PARSE_CTRS(conf
->s0ix_total_res_id
,
591 TELEM_CHECK_AND_PARSE_CTRS(conf
->s0ix_shlw_res_id
,
594 TELEM_CHECK_AND_PARSE_CTRS(conf
->s0ix_deep_res_id
,
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");
602 seq_printf(s
, "S0IX Shallow\t\t\t %10u\t %10llu\n",
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));
610 seq_printf(s
, "S0IX Deep\t\t\t %10u\t %10llu\n",
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));
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);
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);
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));
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");
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;
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
);
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
]);
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
,
669 evtlog
->telem_evtid
= conf
->pss_idle_id
;
670 ret
= telemetry_read_events(TELEM_PSS
, evtlog
, 1);
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
) &
683 pss_idle
[idx
] = (evtlog
->telem_evtlog
>>
684 conf
->pss_idle_data
[idx
].bit_pos
) &
685 TELEM_APL_MASK_PCS_STATE
;
687 for (index
= 0; index
< conf
->pss_idle_evts
; index
++) {
688 seq_printf(s
, "%-30s %u\n",
689 conf
->pss_idle_data
[index
].name
,
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");
701 static int telem_soc_state_open(struct inode
*inode
, struct file
*file
)
703 return single_open(file
, telem_soc_states_show
, inode
->i_private
);
706 static const struct file_operations telem_socstate_ops
= {
707 .open
= telem_soc_state_open
,
710 .release
= single_release
,
713 static int telem_s0ix_res_get(void *data
, u64
*val
)
718 ret
= intel_pmc_s0ix_counter_read(&s0ix_total_res
);
720 pr_err("Failed to read S0ix residency");
724 *val
= s0ix_total_res
;
729 DEFINE_DEBUGFS_ATTRIBUTE(telem_s0ix_fops
, telem_s0ix_res_get
, NULL
, "%llu\n");
731 static int telem_pss_trc_verb_show(struct seq_file
*s
, void *unused
)
736 err
= telemetry_get_trace_verbosity(TELEM_PSS
, &verbosity
);
738 pr_err("Get PSS Trace Verbosity Failed with Error %d\n", err
);
742 seq_printf(s
, "PSS Trace Verbosity %u\n", verbosity
);
746 static ssize_t
telem_pss_trc_verb_write(struct file
*file
,
747 const char __user
*userbuf
,
748 size_t count
, loff_t
*ppos
)
753 if (kstrtou32_from_user(userbuf
, count
, 0, &verbosity
))
756 err
= telemetry_set_trace_verbosity(TELEM_PSS
, verbosity
);
758 pr_err("Changing PSS Trace Verbosity Failed. Error %d\n", err
);
765 static int telem_pss_trc_verb_open(struct inode
*inode
, struct file
*file
)
767 return single_open(file
, telem_pss_trc_verb_show
, inode
->i_private
);
770 static const struct file_operations telem_pss_trc_verb_ops
= {
771 .open
= telem_pss_trc_verb_open
,
773 .write
= telem_pss_trc_verb_write
,
775 .release
= single_release
,
779 static int telem_ioss_trc_verb_show(struct seq_file
*s
, void *unused
)
784 err
= telemetry_get_trace_verbosity(TELEM_IOSS
, &verbosity
);
786 pr_err("Get IOSS Trace Verbosity Failed with Error %d\n", err
);
790 seq_printf(s
, "IOSS Trace Verbosity %u\n", verbosity
);
794 static ssize_t
telem_ioss_trc_verb_write(struct file
*file
,
795 const char __user
*userbuf
,
796 size_t count
, loff_t
*ppos
)
801 if (kstrtou32_from_user(userbuf
, count
, 0, &verbosity
))
804 err
= telemetry_set_trace_verbosity(TELEM_IOSS
, verbosity
);
806 pr_err("Changing IOSS Trace Verbosity Failed. Error %d\n", err
);
813 static int telem_ioss_trc_verb_open(struct inode
*inode
, struct file
*file
)
815 return single_open(file
, telem_ioss_trc_verb_show
, inode
->i_private
);
818 static const struct file_operations telem_ioss_trc_verb_ops
= {
819 .open
= telem_ioss_trc_verb_open
,
821 .write
= telem_ioss_trc_verb_write
,
823 .release
= single_release
,
826 static int pm_suspend_prep_cb(void)
828 struct telemetry_evtlog evtlog
[TELEM_MAX_OS_ALLOCATED_EVENTS
];
829 struct telemetry_debugfs_conf
*conf
= debugfs_conf
;
832 ret
= telemetry_raw_read_eventlog(TELEM_IOSS
, evtlog
,
833 TELEM_MAX_OS_ALLOCATED_EVENTS
);
839 for (index
= 0; index
< ret
; index
++) {
841 TELEM_CHECK_AND_PARSE_CTRS(conf
->s0ix_shlw_occ_id
,
842 suspend_shlw_ctr_temp
);
844 TELEM_CHECK_AND_PARSE_CTRS(conf
->s0ix_deep_occ_id
,
845 suspend_deep_ctr_temp
);
847 TELEM_CHECK_AND_PARSE_CTRS(conf
->s0ix_shlw_res_id
,
848 suspend_shlw_res_temp
);
850 TELEM_CHECK_AND_PARSE_CTRS(conf
->s0ix_deep_res_id
,
851 suspend_deep_res_temp
);
858 static int pm_suspend_exit_cb(void)
860 struct telemetry_evtlog evtlog
[TELEM_MAX_OS_ALLOCATED_EVENTS
];
861 static u32 suspend_shlw_ctr_exit
, suspend_deep_ctr_exit
;
862 static u64 suspend_shlw_res_exit
, suspend_deep_res_exit
;
863 struct telemetry_debugfs_conf
*conf
= debugfs_conf
;
866 if (!suspend_prep_ok
)
869 ret
= telemetry_raw_read_eventlog(TELEM_IOSS
, evtlog
,
870 TELEM_MAX_OS_ALLOCATED_EVENTS
);
874 for (index
= 0; index
< ret
; index
++) {
875 TELEM_CHECK_AND_PARSE_CTRS(conf
->s0ix_shlw_occ_id
,
876 suspend_shlw_ctr_exit
);
878 TELEM_CHECK_AND_PARSE_CTRS(conf
->s0ix_deep_occ_id
,
879 suspend_deep_ctr_exit
);
881 TELEM_CHECK_AND_PARSE_CTRS(conf
->s0ix_shlw_res_id
,
882 suspend_shlw_res_exit
);
884 TELEM_CHECK_AND_PARSE_CTRS(conf
->s0ix_deep_res_id
,
885 suspend_deep_res_exit
);
888 if ((suspend_shlw_ctr_exit
< suspend_shlw_ctr_temp
) ||
889 (suspend_deep_ctr_exit
< suspend_deep_ctr_temp
) ||
890 (suspend_shlw_res_exit
< suspend_shlw_res_temp
) ||
891 (suspend_deep_res_exit
< suspend_deep_res_temp
)) {
892 pr_err("Wrong s0ix counters detected\n");
896 suspend_shlw_ctr_exit
-= suspend_shlw_ctr_temp
;
897 suspend_deep_ctr_exit
-= suspend_deep_ctr_temp
;
898 suspend_shlw_res_exit
-= suspend_shlw_res_temp
;
899 suspend_deep_res_exit
-= suspend_deep_res_temp
;
901 if (suspend_shlw_ctr_exit
== 1) {
902 conf
->suspend_stats
.shlw_ctr
+=
903 suspend_shlw_ctr_exit
;
905 conf
->suspend_stats
.shlw_res
+=
906 suspend_shlw_res_exit
;
908 /* Shallow Wakes Case */
909 else if (suspend_shlw_ctr_exit
> 1) {
910 conf
->suspend_stats
.shlw_swake_ctr
+=
911 suspend_shlw_ctr_exit
;
913 conf
->suspend_stats
.shlw_swake_res
+=
914 suspend_shlw_res_exit
;
917 if (suspend_deep_ctr_exit
== 1) {
918 conf
->suspend_stats
.deep_ctr
+=
919 suspend_deep_ctr_exit
;
921 conf
->suspend_stats
.deep_res
+=
922 suspend_deep_res_exit
;
925 /* Shallow Wakes Case */
926 else if (suspend_deep_ctr_exit
> 1) {
927 conf
->suspend_stats
.deep_swake_ctr
+=
928 suspend_deep_ctr_exit
;
930 conf
->suspend_stats
.deep_swake_res
+=
931 suspend_deep_res_exit
;
939 static int pm_notification(struct notifier_block
*this,
940 unsigned long event
, void *ptr
)
943 case PM_SUSPEND_PREPARE
:
944 return pm_suspend_prep_cb();
945 case PM_POST_SUSPEND
:
946 return pm_suspend_exit_cb();
952 static struct notifier_block pm_notifier
= {
953 .notifier_call
= pm_notification
,
956 static int __init
telemetry_debugfs_init(void)
958 const struct x86_cpu_id
*id
;
962 /* Only APL supported for now */
963 id
= x86_match_cpu(telemetry_debugfs_cpu_ids
);
967 debugfs_conf
= (struct telemetry_debugfs_conf
*)id
->driver_data
;
969 err
= telemetry_pltconfig_valid();
973 err
= telemetry_debugfs_check_evts();
977 register_pm_notifier(&pm_notifier
);
980 debugfs_conf
->telemetry_dbg_dir
= debugfs_create_dir("telemetry", NULL
);
981 if (!debugfs_conf
->telemetry_dbg_dir
)
984 f
= debugfs_create_file("pss_info", S_IFREG
| S_IRUGO
,
985 debugfs_conf
->telemetry_dbg_dir
, NULL
,
988 pr_err("pss_sample_info debugfs register failed\n");
992 f
= debugfs_create_file("ioss_info", S_IFREG
| S_IRUGO
,
993 debugfs_conf
->telemetry_dbg_dir
, NULL
,
996 pr_err("ioss_sample_info debugfs register failed\n");
1000 f
= debugfs_create_file("soc_states", S_IFREG
| S_IRUGO
,
1001 debugfs_conf
->telemetry_dbg_dir
,
1002 NULL
, &telem_socstate_ops
);
1004 pr_err("ioss_sample_info debugfs register failed\n");
1008 f
= debugfs_create_file("s0ix_residency_usec", S_IFREG
| S_IRUGO
,
1009 debugfs_conf
->telemetry_dbg_dir
,
1010 NULL
, &telem_s0ix_fops
);
1012 pr_err("s0ix_residency_usec debugfs register failed\n");
1016 f
= debugfs_create_file("pss_trace_verbosity", S_IFREG
| S_IRUGO
,
1017 debugfs_conf
->telemetry_dbg_dir
, NULL
,
1018 &telem_pss_trc_verb_ops
);
1020 pr_err("pss_trace_verbosity debugfs register failed\n");
1024 f
= debugfs_create_file("ioss_trace_verbosity", S_IFREG
| S_IRUGO
,
1025 debugfs_conf
->telemetry_dbg_dir
, NULL
,
1026 &telem_ioss_trc_verb_ops
);
1028 pr_err("ioss_trace_verbosity debugfs register failed\n");
1035 debugfs_remove_recursive(debugfs_conf
->telemetry_dbg_dir
);
1036 debugfs_conf
->telemetry_dbg_dir
= NULL
;
1038 unregister_pm_notifier(&pm_notifier
);
1043 static void __exit
telemetry_debugfs_exit(void)
1045 debugfs_remove_recursive(debugfs_conf
->telemetry_dbg_dir
);
1046 debugfs_conf
->telemetry_dbg_dir
= NULL
;
1047 unregister_pm_notifier(&pm_notifier
);
1050 late_initcall(telemetry_debugfs_init
);
1051 module_exit(telemetry_debugfs_exit
);
1053 MODULE_AUTHOR("Souvik Kumar Chakravarty <souvik.k.chakravarty@intel.com>");
1054 MODULE_DESCRIPTION("Intel SoC Telemetry debugfs Interface");
1055 MODULE_VERSION(DRIVER_VERSION
);
1056 MODULE_LICENSE("GPL");