xref: /linux/include/linux/scmi_protocol.h (revision a1ff5a7d78a036d6c2178ee5acd6ba4946243800)
1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * SCMI Message Protocol driver header
4  *
5  * Copyright (C) 2018-2021 ARM Ltd.
6  */
7 
8 #ifndef _LINUX_SCMI_PROTOCOL_H
9 #define _LINUX_SCMI_PROTOCOL_H
10 
11 #include <linux/bitfield.h>
12 #include <linux/device.h>
13 #include <linux/notifier.h>
14 #include <linux/types.h>
15 
16 #define SCMI_MAX_STR_SIZE		64
17 #define SCMI_SHORT_NAME_MAX_SIZE	16
18 #define SCMI_MAX_NUM_RATES		16
19 
20 /**
21  * struct scmi_revision_info - version information structure
22  *
23  * @major_ver: Major ABI version. Change here implies risk of backward
24  *	compatibility break.
25  * @minor_ver: Minor ABI version. Change here implies new feature addition,
26  *	or compatible change in ABI.
27  * @num_protocols: Number of protocols that are implemented, excluding the
28  *	base protocol.
29  * @num_agents: Number of agents in the system.
30  * @impl_ver: A vendor-specific implementation version.
31  * @vendor_id: A vendor identifier(Null terminated ASCII string)
32  * @sub_vendor_id: A sub-vendor identifier(Null terminated ASCII string)
33  */
34 struct scmi_revision_info {
35 	u16 major_ver;
36 	u16 minor_ver;
37 	u8 num_protocols;
38 	u8 num_agents;
39 	u32 impl_ver;
40 	char vendor_id[SCMI_SHORT_NAME_MAX_SIZE];
41 	char sub_vendor_id[SCMI_SHORT_NAME_MAX_SIZE];
42 };
43 
44 struct scmi_clock_info {
45 	char name[SCMI_MAX_STR_SIZE];
46 	unsigned int enable_latency;
47 	bool rate_discrete;
48 	bool rate_changed_notifications;
49 	bool rate_change_requested_notifications;
50 	bool state_ctrl_forbidden;
51 	bool rate_ctrl_forbidden;
52 	bool parent_ctrl_forbidden;
53 	bool extended_config;
54 	union {
55 		struct {
56 			int num_rates;
57 			u64 rates[SCMI_MAX_NUM_RATES];
58 		} list;
59 		struct {
60 			u64 min_rate;
61 			u64 max_rate;
62 			u64 step_size;
63 		} range;
64 	};
65 	int num_parents;
66 	u32 *parents;
67 };
68 
69 enum scmi_power_scale {
70 	SCMI_POWER_BOGOWATTS,
71 	SCMI_POWER_MILLIWATTS,
72 	SCMI_POWER_MICROWATTS
73 };
74 
75 struct scmi_handle;
76 struct scmi_device;
77 struct scmi_protocol_handle;
78 
79 enum scmi_clock_oem_config {
80 	SCMI_CLOCK_CFG_DUTY_CYCLE = 0x1,
81 	SCMI_CLOCK_CFG_PHASE,
82 	SCMI_CLOCK_CFG_OEM_START = 0x80,
83 	SCMI_CLOCK_CFG_OEM_END = 0xFF,
84 };
85 
86 /**
87  * struct scmi_clk_proto_ops - represents the various operations provided
88  *	by SCMI Clock Protocol
89  *
90  * @count_get: get the count of clocks provided by SCMI
91  * @info_get: get the information of the specified clock
92  * @rate_get: request the current clock rate of a clock
93  * @rate_set: set the clock rate of a clock
94  * @enable: enables the specified clock
95  * @disable: disables the specified clock
96  * @state_get: get the status of the specified clock
97  * @config_oem_get: get the value of an OEM specific clock config
98  * @config_oem_set: set the value of an OEM specific clock config
99  * @parent_get: get the parent id of a clk
100  * @parent_set: set the parent of a clock
101  */
102 struct scmi_clk_proto_ops {
103 	int (*count_get)(const struct scmi_protocol_handle *ph);
104 
105 	const struct scmi_clock_info __must_check *(*info_get)
106 		(const struct scmi_protocol_handle *ph, u32 clk_id);
107 	int (*rate_get)(const struct scmi_protocol_handle *ph, u32 clk_id,
108 			u64 *rate);
109 	int (*rate_set)(const struct scmi_protocol_handle *ph, u32 clk_id,
110 			u64 rate);
111 	int (*enable)(const struct scmi_protocol_handle *ph, u32 clk_id,
112 		      bool atomic);
113 	int (*disable)(const struct scmi_protocol_handle *ph, u32 clk_id,
114 		       bool atomic);
115 	int (*state_get)(const struct scmi_protocol_handle *ph, u32 clk_id,
116 			 bool *enabled, bool atomic);
117 	int (*config_oem_get)(const struct scmi_protocol_handle *ph, u32 clk_id,
118 			      enum scmi_clock_oem_config oem_type,
119 			      u32 *oem_val, u32 *attributes, bool atomic);
120 	int (*config_oem_set)(const struct scmi_protocol_handle *ph, u32 clk_id,
121 			      enum scmi_clock_oem_config oem_type,
122 			      u32 oem_val, bool atomic);
123 	int (*parent_get)(const struct scmi_protocol_handle *ph, u32 clk_id, u32 *parent_id);
124 	int (*parent_set)(const struct scmi_protocol_handle *ph, u32 clk_id, u32 parent_id);
125 };
126 
127 struct scmi_perf_domain_info {
128 	char name[SCMI_MAX_STR_SIZE];
129 	bool set_perf;
130 };
131 
132 /**
133  * struct scmi_perf_proto_ops - represents the various operations provided
134  *	by SCMI Performance Protocol
135  *
136  * @num_domains_get: gets the number of supported performance domains
137  * @info_get: get the information of a performance domain
138  * @limits_set: sets limits on the performance level of a domain
139  * @limits_get: gets limits on the performance level of a domain
140  * @level_set: sets the performance level of a domain
141  * @level_get: gets the performance level of a domain
142  * @transition_latency_get: gets the DVFS transition latency for a given device
143  * @rate_limit_get: gets the minimum time (us) required between successive
144  *	requests
145  * @device_opps_add: adds all the OPPs for a given device
146  * @freq_set: sets the frequency for a given device using sustained frequency
147  *	to sustained performance level mapping
148  * @freq_get: gets the frequency for a given device using sustained frequency
149  *	to sustained performance level mapping
150  * @est_power_get: gets the estimated power cost for a given performance domain
151  *	at a given frequency
152  * @fast_switch_possible: indicates if fast DVFS switching is possible or not
153  *	for a given device
154  * @fast_switch_rate_limit: gets the minimum time (us) required between
155  *	successive fast_switching requests
156  * @power_scale_mw_get: indicates if the power values provided are in milliWatts
157  *	or in some other (abstract) scale
158  */
159 struct scmi_perf_proto_ops {
160 	int (*num_domains_get)(const struct scmi_protocol_handle *ph);
161 	const struct scmi_perf_domain_info __must_check *(*info_get)
162 		(const struct scmi_protocol_handle *ph, u32 domain);
163 	int (*limits_set)(const struct scmi_protocol_handle *ph, u32 domain,
164 			  u32 max_perf, u32 min_perf);
165 	int (*limits_get)(const struct scmi_protocol_handle *ph, u32 domain,
166 			  u32 *max_perf, u32 *min_perf);
167 	int (*level_set)(const struct scmi_protocol_handle *ph, u32 domain,
168 			 u32 level, bool poll);
169 	int (*level_get)(const struct scmi_protocol_handle *ph, u32 domain,
170 			 u32 *level, bool poll);
171 	int (*transition_latency_get)(const struct scmi_protocol_handle *ph,
172 				      u32 domain);
173 	int (*rate_limit_get)(const struct scmi_protocol_handle *ph,
174 			      u32 domain, u32 *rate_limit);
175 	int (*device_opps_add)(const struct scmi_protocol_handle *ph,
176 			       struct device *dev, u32 domain);
177 	int (*freq_set)(const struct scmi_protocol_handle *ph, u32 domain,
178 			unsigned long rate, bool poll);
179 	int (*freq_get)(const struct scmi_protocol_handle *ph, u32 domain,
180 			unsigned long *rate, bool poll);
181 	int (*est_power_get)(const struct scmi_protocol_handle *ph, u32 domain,
182 			     unsigned long *rate, unsigned long *power);
183 	bool (*fast_switch_possible)(const struct scmi_protocol_handle *ph,
184 				     u32 domain);
185 	int (*fast_switch_rate_limit)(const struct scmi_protocol_handle *ph,
186 				      u32 domain, u32 *rate_limit);
187 	enum scmi_power_scale (*power_scale_get)(const struct scmi_protocol_handle *ph);
188 };
189 
190 /**
191  * struct scmi_power_proto_ops - represents the various operations provided
192  *	by SCMI Power Protocol
193  *
194  * @num_domains_get: get the count of power domains provided by SCMI
195  * @name_get: gets the name of a power domain
196  * @state_set: sets the power state of a power domain
197  * @state_get: gets the power state of a power domain
198  */
199 struct scmi_power_proto_ops {
200 	int (*num_domains_get)(const struct scmi_protocol_handle *ph);
201 	const char *(*name_get)(const struct scmi_protocol_handle *ph,
202 				u32 domain);
203 #define SCMI_POWER_STATE_TYPE_SHIFT	30
204 #define SCMI_POWER_STATE_ID_MASK	(BIT(28) - 1)
205 #define SCMI_POWER_STATE_PARAM(type, id) \
206 	((((type) & BIT(0)) << SCMI_POWER_STATE_TYPE_SHIFT) | \
207 		((id) & SCMI_POWER_STATE_ID_MASK))
208 #define SCMI_POWER_STATE_GENERIC_ON	SCMI_POWER_STATE_PARAM(0, 0)
209 #define SCMI_POWER_STATE_GENERIC_OFF	SCMI_POWER_STATE_PARAM(1, 0)
210 	int (*state_set)(const struct scmi_protocol_handle *ph, u32 domain,
211 			 u32 state);
212 	int (*state_get)(const struct scmi_protocol_handle *ph, u32 domain,
213 			 u32 *state);
214 };
215 
216 /**
217  * struct scmi_sensor_reading  - represent a timestamped read
218  *
219  * Used by @reading_get_timestamped method.
220  *
221  * @value: The signed value sensor read.
222  * @timestamp: An unsigned timestamp for the sensor read, as provided by
223  *	       SCMI platform. Set to zero when not available.
224  */
225 struct scmi_sensor_reading {
226 	long long value;
227 	unsigned long long timestamp;
228 };
229 
230 /**
231  * struct scmi_range_attrs  - specifies a sensor or axis values' range
232  * @min_range: The minimum value which can be represented by the sensor/axis.
233  * @max_range: The maximum value which can be represented by the sensor/axis.
234  */
235 struct scmi_range_attrs {
236 	long long min_range;
237 	long long max_range;
238 };
239 
240 /**
241  * struct scmi_sensor_axis_info  - describes one sensor axes
242  * @id: The axes ID.
243  * @type: Axes type. Chosen amongst one of @enum scmi_sensor_class.
244  * @scale: Power-of-10 multiplier applied to the axis unit.
245  * @name: NULL-terminated string representing axes name as advertised by
246  *	  SCMI platform.
247  * @extended_attrs: Flag to indicate the presence of additional extended
248  *		    attributes for this axes.
249  * @resolution: Extended attribute representing the resolution of the axes.
250  *		Set to 0 if not reported by this axes.
251  * @exponent: Extended attribute representing the power-of-10 multiplier that
252  *	      is applied to the resolution field. Set to 0 if not reported by
253  *	      this axes.
254  * @attrs: Extended attributes representing minimum and maximum values
255  *	   measurable by this axes. Set to 0 if not reported by this sensor.
256  */
257 struct scmi_sensor_axis_info {
258 	unsigned int id;
259 	unsigned int type;
260 	int scale;
261 	char name[SCMI_MAX_STR_SIZE];
262 	bool extended_attrs;
263 	unsigned int resolution;
264 	int exponent;
265 	struct scmi_range_attrs attrs;
266 };
267 
268 /**
269  * struct scmi_sensor_intervals_info  - describes number and type of available
270  *	update intervals
271  * @segmented: Flag for segmented intervals' representation. When True there
272  *	       will be exactly 3 intervals in @desc, with each entry
273  *	       representing a member of a segment in this order:
274  *	       {lowest update interval, highest update interval, step size}
275  * @count: Number of intervals described in @desc.
276  * @desc: Array of @count interval descriptor bitmask represented as detailed in
277  *	  the SCMI specification: it can be accessed using the accompanying
278  *	  macros.
279  * @prealloc_pool: A minimal preallocated pool of desc entries used to avoid
280  *		   lesser-than-64-bytes dynamic allocation for small @count
281  *		   values.
282  */
283 struct scmi_sensor_intervals_info {
284 	bool segmented;
285 	unsigned int count;
286 #define SCMI_SENS_INTVL_SEGMENT_LOW	0
287 #define SCMI_SENS_INTVL_SEGMENT_HIGH	1
288 #define SCMI_SENS_INTVL_SEGMENT_STEP	2
289 	unsigned int *desc;
290 #define SCMI_SENS_INTVL_GET_SECS(x)		FIELD_GET(GENMASK(20, 5), (x))
291 #define SCMI_SENS_INTVL_GET_EXP(x)					\
292 	({								\
293 		int __signed_exp = FIELD_GET(GENMASK(4, 0), (x));	\
294 									\
295 		if (__signed_exp & BIT(4))				\
296 			__signed_exp |= GENMASK(31, 5);			\
297 		__signed_exp;						\
298 	})
299 #define SCMI_MAX_PREALLOC_POOL			16
300 	unsigned int prealloc_pool[SCMI_MAX_PREALLOC_POOL];
301 };
302 
303 /**
304  * struct scmi_sensor_info - represents information related to one of the
305  * available sensors.
306  * @id: Sensor ID.
307  * @type: Sensor type. Chosen amongst one of @enum scmi_sensor_class.
308  * @scale: Power-of-10 multiplier applied to the sensor unit.
309  * @num_trip_points: Number of maximum configurable trip points.
310  * @async: Flag for asynchronous read support.
311  * @update: Flag for continuouos update notification support.
312  * @timestamped: Flag for timestamped read support.
313  * @tstamp_scale: Power-of-10 multiplier applied to the sensor timestamps to
314  *		  represent it in seconds.
315  * @num_axis: Number of supported axis if any. Reported as 0 for scalar sensors.
316  * @axis: Pointer to an array of @num_axis descriptors.
317  * @intervals: Descriptor of available update intervals.
318  * @sensor_config: A bitmask reporting the current sensor configuration as
319  *		   detailed in the SCMI specification: it can accessed and
320  *		   modified through the accompanying macros.
321  * @name: NULL-terminated string representing sensor name as advertised by
322  *	  SCMI platform.
323  * @extended_scalar_attrs: Flag to indicate the presence of additional extended
324  *			   attributes for this sensor.
325  * @sensor_power: Extended attribute representing the average power
326  *		  consumed by the sensor in microwatts (uW) when it is active.
327  *		  Reported here only for scalar sensors.
328  *		  Set to 0 if not reported by this sensor.
329  * @resolution: Extended attribute representing the resolution of the sensor.
330  *		Reported here only for scalar sensors.
331  *		Set to 0 if not reported by this sensor.
332  * @exponent: Extended attribute representing the power-of-10 multiplier that is
333  *	      applied to the resolution field.
334  *	      Reported here only for scalar sensors.
335  *	      Set to 0 if not reported by this sensor.
336  * @scalar_attrs: Extended attributes representing minimum and maximum
337  *		  measurable values by this sensor.
338  *		  Reported here only for scalar sensors.
339  *		  Set to 0 if not reported by this sensor.
340  */
341 struct scmi_sensor_info {
342 	unsigned int id;
343 	unsigned int type;
344 	int scale;
345 	unsigned int num_trip_points;
346 	bool async;
347 	bool update;
348 	bool timestamped;
349 	int tstamp_scale;
350 	unsigned int num_axis;
351 	struct scmi_sensor_axis_info *axis;
352 	struct scmi_sensor_intervals_info intervals;
353 	unsigned int sensor_config;
354 #define SCMI_SENS_CFG_UPDATE_SECS_MASK		GENMASK(31, 16)
355 #define SCMI_SENS_CFG_GET_UPDATE_SECS(x)				\
356 	FIELD_GET(SCMI_SENS_CFG_UPDATE_SECS_MASK, (x))
357 
358 #define SCMI_SENS_CFG_UPDATE_EXP_MASK		GENMASK(15, 11)
359 #define SCMI_SENS_CFG_GET_UPDATE_EXP(x)					\
360 	({								\
361 		int __signed_exp =					\
362 			FIELD_GET(SCMI_SENS_CFG_UPDATE_EXP_MASK, (x));	\
363 									\
364 		if (__signed_exp & BIT(4))				\
365 			__signed_exp |= GENMASK(31, 5);			\
366 		__signed_exp;						\
367 	})
368 
369 #define SCMI_SENS_CFG_ROUND_MASK		GENMASK(10, 9)
370 #define SCMI_SENS_CFG_ROUND_AUTO		2
371 #define SCMI_SENS_CFG_ROUND_UP			1
372 #define SCMI_SENS_CFG_ROUND_DOWN		0
373 
374 #define SCMI_SENS_CFG_TSTAMP_ENABLED_MASK	BIT(1)
375 #define SCMI_SENS_CFG_TSTAMP_ENABLE		1
376 #define SCMI_SENS_CFG_TSTAMP_DISABLE		0
377 #define SCMI_SENS_CFG_IS_TSTAMP_ENABLED(x)				\
378 	FIELD_GET(SCMI_SENS_CFG_TSTAMP_ENABLED_MASK, (x))
379 
380 #define SCMI_SENS_CFG_SENSOR_ENABLED_MASK	BIT(0)
381 #define SCMI_SENS_CFG_SENSOR_ENABLE		1
382 #define SCMI_SENS_CFG_SENSOR_DISABLE		0
383 	char name[SCMI_MAX_STR_SIZE];
384 #define SCMI_SENS_CFG_IS_ENABLED(x)		FIELD_GET(BIT(0), (x))
385 	bool extended_scalar_attrs;
386 	unsigned int sensor_power;
387 	unsigned int resolution;
388 	int exponent;
389 	struct scmi_range_attrs scalar_attrs;
390 };
391 
392 /*
393  * Partial list from Distributed Management Task Force (DMTF) specification:
394  * DSP0249 (Platform Level Data Model specification)
395  */
396 enum scmi_sensor_class {
397 	NONE = 0x0,
398 	UNSPEC = 0x1,
399 	TEMPERATURE_C = 0x2,
400 	TEMPERATURE_F = 0x3,
401 	TEMPERATURE_K = 0x4,
402 	VOLTAGE = 0x5,
403 	CURRENT = 0x6,
404 	POWER = 0x7,
405 	ENERGY = 0x8,
406 	CHARGE = 0x9,
407 	VOLTAMPERE = 0xA,
408 	NITS = 0xB,
409 	LUMENS = 0xC,
410 	LUX = 0xD,
411 	CANDELAS = 0xE,
412 	KPA = 0xF,
413 	PSI = 0x10,
414 	NEWTON = 0x11,
415 	CFM = 0x12,
416 	RPM = 0x13,
417 	HERTZ = 0x14,
418 	SECS = 0x15,
419 	MINS = 0x16,
420 	HOURS = 0x17,
421 	DAYS = 0x18,
422 	WEEKS = 0x19,
423 	MILS = 0x1A,
424 	INCHES = 0x1B,
425 	FEET = 0x1C,
426 	CUBIC_INCHES = 0x1D,
427 	CUBIC_FEET = 0x1E,
428 	METERS = 0x1F,
429 	CUBIC_CM = 0x20,
430 	CUBIC_METERS = 0x21,
431 	LITERS = 0x22,
432 	FLUID_OUNCES = 0x23,
433 	RADIANS = 0x24,
434 	STERADIANS = 0x25,
435 	REVOLUTIONS = 0x26,
436 	CYCLES = 0x27,
437 	GRAVITIES = 0x28,
438 	OUNCES = 0x29,
439 	POUNDS = 0x2A,
440 	FOOT_POUNDS = 0x2B,
441 	OUNCE_INCHES = 0x2C,
442 	GAUSS = 0x2D,
443 	GILBERTS = 0x2E,
444 	HENRIES = 0x2F,
445 	FARADS = 0x30,
446 	OHMS = 0x31,
447 	SIEMENS = 0x32,
448 	MOLES = 0x33,
449 	BECQUERELS = 0x34,
450 	PPM = 0x35,
451 	DECIBELS = 0x36,
452 	DBA = 0x37,
453 	DBC = 0x38,
454 	GRAYS = 0x39,
455 	SIEVERTS = 0x3A,
456 	COLOR_TEMP_K = 0x3B,
457 	BITS = 0x3C,
458 	BYTES = 0x3D,
459 	WORDS = 0x3E,
460 	DWORDS = 0x3F,
461 	QWORDS = 0x40,
462 	PERCENTAGE = 0x41,
463 	PASCALS = 0x42,
464 	COUNTS = 0x43,
465 	GRAMS = 0x44,
466 	NEWTON_METERS = 0x45,
467 	HITS = 0x46,
468 	MISSES = 0x47,
469 	RETRIES = 0x48,
470 	OVERRUNS = 0x49,
471 	UNDERRUNS = 0x4A,
472 	COLLISIONS = 0x4B,
473 	PACKETS = 0x4C,
474 	MESSAGES = 0x4D,
475 	CHARS = 0x4E,
476 	ERRORS = 0x4F,
477 	CORRECTED_ERRS = 0x50,
478 	UNCORRECTABLE_ERRS = 0x51,
479 	SQ_MILS = 0x52,
480 	SQ_INCHES = 0x53,
481 	SQ_FEET = 0x54,
482 	SQ_CM = 0x55,
483 	SQ_METERS = 0x56,
484 	RADIANS_SEC = 0x57,
485 	BPM = 0x58,
486 	METERS_SEC_SQUARED = 0x59,
487 	METERS_SEC = 0x5A,
488 	CUBIC_METERS_SEC = 0x5B,
489 	MM_MERCURY = 0x5C,
490 	RADIANS_SEC_SQUARED = 0x5D,
491 	OEM_UNIT = 0xFF
492 };
493 
494 /**
495  * struct scmi_sensor_proto_ops - represents the various operations provided
496  *	by SCMI Sensor Protocol
497  *
498  * @count_get: get the count of sensors provided by SCMI
499  * @info_get: get the information of the specified sensor
500  * @trip_point_config: selects and configures a trip-point of interest
501  * @reading_get: gets the current value of the sensor
502  * @reading_get_timestamped: gets the current value and timestamp, when
503  *			     available, of the sensor. (as of v3.0 spec)
504  *			     Supports multi-axis sensors for sensors which
505  *			     supports it and if the @reading array size of
506  *			     @count entry equals the sensor num_axis
507  * @config_get: Get sensor current configuration
508  * @config_set: Set sensor current configuration
509  */
510 struct scmi_sensor_proto_ops {
511 	int (*count_get)(const struct scmi_protocol_handle *ph);
512 	const struct scmi_sensor_info __must_check *(*info_get)
513 		(const struct scmi_protocol_handle *ph, u32 sensor_id);
514 	int (*trip_point_config)(const struct scmi_protocol_handle *ph,
515 				 u32 sensor_id, u8 trip_id, u64 trip_value);
516 	int (*reading_get)(const struct scmi_protocol_handle *ph, u32 sensor_id,
517 			   u64 *value);
518 	int (*reading_get_timestamped)(const struct scmi_protocol_handle *ph,
519 				       u32 sensor_id, u8 count,
520 				       struct scmi_sensor_reading *readings);
521 	int (*config_get)(const struct scmi_protocol_handle *ph,
522 			  u32 sensor_id, u32 *sensor_config);
523 	int (*config_set)(const struct scmi_protocol_handle *ph,
524 			  u32 sensor_id, u32 sensor_config);
525 };
526 
527 /**
528  * struct scmi_reset_proto_ops - represents the various operations provided
529  *	by SCMI Reset Protocol
530  *
531  * @num_domains_get: get the count of reset domains provided by SCMI
532  * @name_get: gets the name of a reset domain
533  * @latency_get: gets the reset latency for the specified reset domain
534  * @reset: resets the specified reset domain
535  * @assert: explicitly assert reset signal of the specified reset domain
536  * @deassert: explicitly deassert reset signal of the specified reset domain
537  */
538 struct scmi_reset_proto_ops {
539 	int (*num_domains_get)(const struct scmi_protocol_handle *ph);
540 	const char *(*name_get)(const struct scmi_protocol_handle *ph,
541 				u32 domain);
542 	int (*latency_get)(const struct scmi_protocol_handle *ph, u32 domain);
543 	int (*reset)(const struct scmi_protocol_handle *ph, u32 domain);
544 	int (*assert)(const struct scmi_protocol_handle *ph, u32 domain);
545 	int (*deassert)(const struct scmi_protocol_handle *ph, u32 domain);
546 };
547 
548 enum scmi_voltage_level_mode {
549 	SCMI_VOLTAGE_LEVEL_SET_AUTO,
550 	SCMI_VOLTAGE_LEVEL_SET_SYNC,
551 };
552 
553 /**
554  * struct scmi_voltage_info - describe one available SCMI Voltage Domain
555  *
556  * @id: the domain ID as advertised by the platform
557  * @segmented: defines the layout of the entries of array @levels_uv.
558  *	       - when True the entries are to be interpreted as triplets,
559  *	         each defining a segment representing a range of equally
560  *	         space voltages: <lowest_volts>, <highest_volt>, <step_uV>
561  *	       - when False the entries simply represent a single discrete
562  *	         supported voltage level
563  * @negative_volts_allowed: True if any of the entries of @levels_uv represent
564  *			    a negative voltage.
565  * @async_level_set: True when the voltage domain supports asynchronous level
566  *		     set commands.
567  * @name: name assigned to the Voltage Domain by platform
568  * @num_levels: number of total entries in @levels_uv.
569  * @levels_uv: array of entries describing the available voltage levels for
570  *	       this domain.
571  */
572 struct scmi_voltage_info {
573 	unsigned int id;
574 	bool segmented;
575 	bool negative_volts_allowed;
576 	bool async_level_set;
577 	char name[SCMI_MAX_STR_SIZE];
578 	unsigned int num_levels;
579 #define SCMI_VOLTAGE_SEGMENT_LOW	0
580 #define SCMI_VOLTAGE_SEGMENT_HIGH	1
581 #define SCMI_VOLTAGE_SEGMENT_STEP	2
582 	int *levels_uv;
583 };
584 
585 /**
586  * struct scmi_voltage_proto_ops - represents the various operations provided
587  * by SCMI Voltage Protocol
588  *
589  * @num_domains_get: get the count of voltage domains provided by SCMI
590  * @info_get: get the information of the specified domain
591  * @config_set: set the config for the specified domain
592  * @config_get: get the config of the specified domain
593  * @level_set: set the voltage level for the specified domain
594  * @level_get: get the voltage level of the specified domain
595  */
596 struct scmi_voltage_proto_ops {
597 	int (*num_domains_get)(const struct scmi_protocol_handle *ph);
598 	const struct scmi_voltage_info __must_check *(*info_get)
599 		(const struct scmi_protocol_handle *ph, u32 domain_id);
600 	int (*config_set)(const struct scmi_protocol_handle *ph, u32 domain_id,
601 			  u32 config);
602 #define	SCMI_VOLTAGE_ARCH_STATE_OFF		0x0
603 #define	SCMI_VOLTAGE_ARCH_STATE_ON		0x7
604 	int (*config_get)(const struct scmi_protocol_handle *ph, u32 domain_id,
605 			  u32 *config);
606 	int (*level_set)(const struct scmi_protocol_handle *ph, u32 domain_id,
607 			 enum scmi_voltage_level_mode mode, s32 volt_uV);
608 	int (*level_get)(const struct scmi_protocol_handle *ph, u32 domain_id,
609 			 s32 *volt_uV);
610 };
611 
612 /**
613  * struct scmi_powercap_info  - Describe one available Powercap domain
614  *
615  * @id: Domain ID as advertised by the platform.
616  * @notify_powercap_cap_change: CAP change notification support.
617  * @notify_powercap_measurement_change: MEASUREMENTS change notifications
618  *				       support.
619  * @async_powercap_cap_set: Asynchronous CAP set support.
620  * @powercap_cap_config: CAP configuration support.
621  * @powercap_monitoring: Monitoring (measurements) support.
622  * @powercap_pai_config: PAI configuration support.
623  * @powercap_scale_mw: Domain reports power data in milliwatt units.
624  * @powercap_scale_uw: Domain reports power data in microwatt units.
625  *		       Note that, when both @powercap_scale_mw and
626  *		       @powercap_scale_uw are set to false, the domain
627  *		       reports power data on an abstract linear scale.
628  * @name: name assigned to the Powercap Domain by platform.
629  * @min_pai: Minimum configurable PAI.
630  * @max_pai: Maximum configurable PAI.
631  * @pai_step: Step size between two consecutive PAI values.
632  * @min_power_cap: Minimum configurable CAP.
633  * @max_power_cap: Maximum configurable CAP.
634  * @power_cap_step: Step size between two consecutive CAP values.
635  * @sustainable_power: Maximum sustainable power consumption for this domain
636  *		       under normal conditions.
637  * @accuracy: The accuracy with which the power is measured and reported in
638  *	      integral multiples of 0.001 percent.
639  * @parent_id: Identifier of the containing parent power capping domain, or the
640  *	       value 0xFFFFFFFF if this powercap domain is a root domain not
641  *	       contained in any other domain.
642  */
643 struct scmi_powercap_info {
644 	unsigned int id;
645 	bool notify_powercap_cap_change;
646 	bool notify_powercap_measurement_change;
647 	bool async_powercap_cap_set;
648 	bool powercap_cap_config;
649 	bool powercap_monitoring;
650 	bool powercap_pai_config;
651 	bool powercap_scale_mw;
652 	bool powercap_scale_uw;
653 	bool fastchannels;
654 	char name[SCMI_MAX_STR_SIZE];
655 	unsigned int min_pai;
656 	unsigned int max_pai;
657 	unsigned int pai_step;
658 	unsigned int min_power_cap;
659 	unsigned int max_power_cap;
660 	unsigned int power_cap_step;
661 	unsigned int sustainable_power;
662 	unsigned int accuracy;
663 #define SCMI_POWERCAP_ROOT_ZONE_ID     0xFFFFFFFFUL
664 	unsigned int parent_id;
665 	struct scmi_fc_info *fc_info;
666 };
667 
668 /**
669  * struct scmi_powercap_proto_ops - represents the various operations provided
670  * by SCMI Powercap Protocol
671  *
672  * @num_domains_get: get the count of powercap domains provided by SCMI.
673  * @info_get: get the information for the specified domain.
674  * @cap_get: get the current CAP value for the specified domain.
675  *	     On SCMI platforms supporting powercap zone disabling, this could
676  *	     report a zero value for a zone where powercapping is disabled.
677  * @cap_set: set the CAP value for the specified domain to the provided value;
678  *	     if the domain supports setting the CAP with an asynchronous command
679  *	     this request will finally trigger an asynchronous transfer, but, if
680  *	     @ignore_dresp here is set to true, this call will anyway return
681  *	     immediately without waiting for the related delayed response.
682  *	     Note that the powercap requested value must NOT be zero, even if
683  *	     the platform supports disabling a powercap by setting its cap to
684  *	     zero (since SCMI v3.2): there are dedicated operations that should
685  *	     be used for that. (@cap_enable_set/get)
686  * @cap_enable_set: enable or disable the powercapping on the specified domain,
687  *		    if supported by the SCMI platform implementation.
688  *		    Note that, by the SCMI specification, the platform can
689  *		    silently ignore our disable request and decide to enforce
690  *		    anyway some other powercap value requested by another agent
691  *		    on the system: for this reason @cap_get and @cap_enable_get
692  *		    will always report the final platform view of the powercaps.
693  * @cap_enable_get: get the current CAP enable status for the specified domain.
694  * @pai_get: get the current PAI value for the specified domain.
695  * @pai_set: set the PAI value for the specified domain to the provided value.
696  * @measurements_get: retrieve the current average power measurements for the
697  *		      specified domain and the related PAI upon which is
698  *		      calculated.
699  * @measurements_threshold_set: set the desired low and high power thresholds
700  *				to be used when registering for notification
701  *				of type POWERCAP_MEASUREMENTS_NOTIFY with this
702  *				powercap domain.
703  *				Note that this must be called at least once
704  *				before registering any callback with the usual
705  *				@scmi_notify_ops; moreover, in case this method
706  *				is called with measurement notifications already
707  *				enabled it will also trigger, transparently, a
708  *				proper update of the power thresholds configured
709  *				in the SCMI backend server.
710  * @measurements_threshold_get: get the currently configured low and high power
711  *				thresholds used when registering callbacks for
712  *				notification POWERCAP_MEASUREMENTS_NOTIFY.
713  */
714 struct scmi_powercap_proto_ops {
715 	int (*num_domains_get)(const struct scmi_protocol_handle *ph);
716 	const struct scmi_powercap_info __must_check *(*info_get)
717 		(const struct scmi_protocol_handle *ph, u32 domain_id);
718 	int (*cap_get)(const struct scmi_protocol_handle *ph, u32 domain_id,
719 		       u32 *power_cap);
720 	int (*cap_set)(const struct scmi_protocol_handle *ph, u32 domain_id,
721 		       u32 power_cap, bool ignore_dresp);
722 	int (*cap_enable_set)(const struct scmi_protocol_handle *ph,
723 			      u32 domain_id, bool enable);
724 	int (*cap_enable_get)(const struct scmi_protocol_handle *ph,
725 			      u32 domain_id, bool *enable);
726 	int (*pai_get)(const struct scmi_protocol_handle *ph, u32 domain_id,
727 		       u32 *pai);
728 	int (*pai_set)(const struct scmi_protocol_handle *ph, u32 domain_id,
729 		       u32 pai);
730 	int (*measurements_get)(const struct scmi_protocol_handle *ph,
731 				u32 domain_id, u32 *average_power, u32 *pai);
732 	int (*measurements_threshold_set)(const struct scmi_protocol_handle *ph,
733 					  u32 domain_id, u32 power_thresh_low,
734 					  u32 power_thresh_high);
735 	int (*measurements_threshold_get)(const struct scmi_protocol_handle *ph,
736 					  u32 domain_id, u32 *power_thresh_low,
737 					  u32 *power_thresh_high);
738 };
739 
740 enum scmi_pinctrl_selector_type {
741 	PIN_TYPE = 0,
742 	GROUP_TYPE,
743 	FUNCTION_TYPE,
744 };
745 
746 enum scmi_pinctrl_conf_type {
747 	SCMI_PIN_DEFAULT = 0,
748 	SCMI_PIN_BIAS_BUS_HOLD = 1,
749 	SCMI_PIN_BIAS_DISABLE = 2,
750 	SCMI_PIN_BIAS_HIGH_IMPEDANCE = 3,
751 	SCMI_PIN_BIAS_PULL_UP = 4,
752 	SCMI_PIN_BIAS_PULL_DEFAULT = 5,
753 	SCMI_PIN_BIAS_PULL_DOWN = 6,
754 	SCMI_PIN_DRIVE_OPEN_DRAIN = 7,
755 	SCMI_PIN_DRIVE_OPEN_SOURCE = 8,
756 	SCMI_PIN_DRIVE_PUSH_PULL = 9,
757 	SCMI_PIN_DRIVE_STRENGTH = 10,
758 	SCMI_PIN_INPUT_DEBOUNCE = 11,
759 	SCMI_PIN_INPUT_MODE = 12,
760 	SCMI_PIN_PULL_MODE = 13,
761 	SCMI_PIN_INPUT_VALUE = 14,
762 	SCMI_PIN_INPUT_SCHMITT = 15,
763 	SCMI_PIN_LOW_POWER_MODE = 16,
764 	SCMI_PIN_OUTPUT_MODE = 17,
765 	SCMI_PIN_OUTPUT_VALUE = 18,
766 	SCMI_PIN_POWER_SOURCE = 19,
767 	SCMI_PIN_SLEW_RATE = 20,
768 	SCMI_PIN_OEM_START = 192,
769 	SCMI_PIN_OEM_END = 255,
770 };
771 
772 /**
773  * struct scmi_pinctrl_proto_ops - represents the various operations provided
774  * by SCMI Pinctrl Protocol
775  *
776  * @count_get: returns count of the registered elements in given type
777  * @name_get: returns name by index of given type
778  * @group_pins_get: returns the set of pins, assigned to the specified group
779  * @function_groups_get: returns the set of groups, assigned to the specified
780  *	function
781  * @mux_set: set muxing function for groups of pins
782  * @settings_get_one: returns one configuration parameter for pin or group
783  *	specified by config_type
784  * @settings_get_all: returns all configuration parameters for pin or group
785  * @settings_conf: sets the configuration parameter for pin or group
786  * @pin_request: aquire pin before selecting mux setting
787  * @pin_free: frees pin, acquired by request_pin call
788  */
789 struct scmi_pinctrl_proto_ops {
790 	int (*count_get)(const struct scmi_protocol_handle *ph,
791 			 enum scmi_pinctrl_selector_type type);
792 	int (*name_get)(const struct scmi_protocol_handle *ph, u32 selector,
793 			enum scmi_pinctrl_selector_type type,
794 			const char **name);
795 	int (*group_pins_get)(const struct scmi_protocol_handle *ph,
796 			      u32 selector, const unsigned int **pins,
797 			      unsigned int *nr_pins);
798 	int (*function_groups_get)(const struct scmi_protocol_handle *ph,
799 				   u32 selector, unsigned int *nr_groups,
800 				   const unsigned int **groups);
801 	int (*mux_set)(const struct scmi_protocol_handle *ph, u32 selector,
802 		       u32 group);
803 	int (*settings_get_one)(const struct scmi_protocol_handle *ph,
804 				u32 selector,
805 				enum scmi_pinctrl_selector_type type,
806 				enum scmi_pinctrl_conf_type config_type,
807 				u32 *config_value);
808 	int (*settings_get_all)(const struct scmi_protocol_handle *ph,
809 				u32 selector,
810 				enum scmi_pinctrl_selector_type type,
811 				unsigned int *nr_configs,
812 				enum scmi_pinctrl_conf_type *config_types,
813 				u32 *config_values);
814 	int (*settings_conf)(const struct scmi_protocol_handle *ph,
815 			     u32 selector, enum scmi_pinctrl_selector_type type,
816 			     unsigned int nr_configs,
817 			     enum scmi_pinctrl_conf_type *config_type,
818 			     u32 *config_value);
819 	int (*pin_request)(const struct scmi_protocol_handle *ph, u32 pin);
820 	int (*pin_free)(const struct scmi_protocol_handle *ph, u32 pin);
821 };
822 
823 /**
824  * struct scmi_notify_ops  - represents notifications' operations provided by
825  * SCMI core
826  * @devm_event_notifier_register: Managed registration of a notifier_block for
827  *				  the requested event
828  * @devm_event_notifier_unregister: Managed unregistration of a notifier_block
829  *				    for the requested event
830  * @event_notifier_register: Register a notifier_block for the requested event
831  * @event_notifier_unregister: Unregister a notifier_block for the requested
832  *			       event
833  *
834  * A user can register/unregister its own notifier_block against the wanted
835  * platform instance regarding the desired event identified by the
836  * tuple: (proto_id, evt_id, src_id) using the provided register/unregister
837  * interface where:
838  *
839  * @sdev: The scmi_device to use when calling the devres managed ops devm_
840  * @handle: The handle identifying the platform instance to use, when not
841  *	    calling the managed ops devm_
842  * @proto_id: The protocol ID as in SCMI Specification
843  * @evt_id: The message ID of the desired event as in SCMI Specification
844  * @src_id: A pointer to the desired source ID if different sources are
845  *	    possible for the protocol (like domain_id, sensor_id...etc)
846  *
847  * @src_id can be provided as NULL if it simply does NOT make sense for
848  * the protocol at hand, OR if the user is explicitly interested in
849  * receiving notifications from ANY existent source associated to the
850  * specified proto_id / evt_id.
851  *
852  * Received notifications are finally delivered to the registered users,
853  * invoking the callback provided with the notifier_block *nb as follows:
854  *
855  *	int user_cb(nb, evt_id, report)
856  *
857  * with:
858  *
859  * @nb: The notifier block provided by the user
860  * @evt_id: The message ID of the delivered event
861  * @report: A custom struct describing the specific event delivered
862  */
863 struct scmi_notify_ops {
864 	int (*devm_event_notifier_register)(struct scmi_device *sdev,
865 					    u8 proto_id, u8 evt_id,
866 					    const u32 *src_id,
867 					    struct notifier_block *nb);
868 	int (*devm_event_notifier_unregister)(struct scmi_device *sdev,
869 					      struct notifier_block *nb);
870 	int (*event_notifier_register)(const struct scmi_handle *handle,
871 				       u8 proto_id, u8 evt_id,
872 				       const u32 *src_id,
873 				       struct notifier_block *nb);
874 	int (*event_notifier_unregister)(const struct scmi_handle *handle,
875 					 u8 proto_id, u8 evt_id,
876 					 const u32 *src_id,
877 					 struct notifier_block *nb);
878 };
879 
880 /**
881  * struct scmi_handle - Handle returned to ARM SCMI clients for usage.
882  *
883  * @dev: pointer to the SCMI device
884  * @version: pointer to the structure containing SCMI version information
885  * @devm_protocol_acquire: devres managed method to get hold of a protocol,
886  *			   causing its initialization and related resource
887  *			   accounting
888  * @devm_protocol_get: devres managed method to acquire a protocol and get specific
889  *		       operations and a dedicated protocol handler
890  * @devm_protocol_put: devres managed method to release a protocol
891  * @is_transport_atomic: method to check if the underlying transport for this
892  *			 instance handle is configured to support atomic
893  *			 transactions for commands.
894  *			 Some users of the SCMI stack in the upper layers could
895  *			 be interested to know if they can assume SCMI
896  *			 command transactions associated to this handle will
897  *			 never sleep and act accordingly.
898  *			 An optional atomic threshold value could be returned
899  *			 where configured.
900  * @notify_ops: pointer to set of notifications related operations
901  */
902 struct scmi_handle {
903 	struct device *dev;
904 	struct scmi_revision_info *version;
905 
906 	int __must_check (*devm_protocol_acquire)(struct scmi_device *sdev,
907 						  u8 proto);
908 	const void __must_check *
909 		(*devm_protocol_get)(struct scmi_device *sdev, u8 proto,
910 				     struct scmi_protocol_handle **ph);
911 	void (*devm_protocol_put)(struct scmi_device *sdev, u8 proto);
912 	bool (*is_transport_atomic)(const struct scmi_handle *handle,
913 				    unsigned int *atomic_threshold);
914 
915 	const struct scmi_notify_ops *notify_ops;
916 };
917 
918 enum scmi_std_protocol {
919 	SCMI_PROTOCOL_BASE = 0x10,
920 	SCMI_PROTOCOL_POWER = 0x11,
921 	SCMI_PROTOCOL_SYSTEM = 0x12,
922 	SCMI_PROTOCOL_PERF = 0x13,
923 	SCMI_PROTOCOL_CLOCK = 0x14,
924 	SCMI_PROTOCOL_SENSOR = 0x15,
925 	SCMI_PROTOCOL_RESET = 0x16,
926 	SCMI_PROTOCOL_VOLTAGE = 0x17,
927 	SCMI_PROTOCOL_POWERCAP = 0x18,
928 	SCMI_PROTOCOL_PINCTRL = 0x19,
929 };
930 
931 enum scmi_system_events {
932 	SCMI_SYSTEM_SHUTDOWN,
933 	SCMI_SYSTEM_COLDRESET,
934 	SCMI_SYSTEM_WARMRESET,
935 	SCMI_SYSTEM_POWERUP,
936 	SCMI_SYSTEM_SUSPEND,
937 	SCMI_SYSTEM_MAX
938 };
939 
940 struct scmi_device {
941 	u32 id;
942 	u8 protocol_id;
943 	const char *name;
944 	struct device dev;
945 	struct scmi_handle *handle;
946 };
947 
948 #define to_scmi_dev(d) container_of_const(d, struct scmi_device, dev)
949 
950 struct scmi_device_id {
951 	u8 protocol_id;
952 	const char *name;
953 };
954 
955 struct scmi_driver {
956 	const char *name;
957 	int (*probe)(struct scmi_device *sdev);
958 	void (*remove)(struct scmi_device *sdev);
959 	const struct scmi_device_id *id_table;
960 
961 	struct device_driver driver;
962 };
963 
964 #define to_scmi_driver(d) container_of(d, struct scmi_driver, driver)
965 
966 #if IS_REACHABLE(CONFIG_ARM_SCMI_PROTOCOL)
967 int scmi_driver_register(struct scmi_driver *driver,
968 			 struct module *owner, const char *mod_name);
969 void scmi_driver_unregister(struct scmi_driver *driver);
970 #else
971 static inline int
scmi_driver_register(struct scmi_driver * driver,struct module * owner,const char * mod_name)972 scmi_driver_register(struct scmi_driver *driver, struct module *owner,
973 		     const char *mod_name)
974 {
975 	return -EINVAL;
976 }
977 
scmi_driver_unregister(struct scmi_driver * driver)978 static inline void scmi_driver_unregister(struct scmi_driver *driver) {}
979 #endif /* CONFIG_ARM_SCMI_PROTOCOL */
980 
981 #define scmi_register(driver) \
982 	scmi_driver_register(driver, THIS_MODULE, KBUILD_MODNAME)
983 #define scmi_unregister(driver) \
984 	scmi_driver_unregister(driver)
985 
986 /**
987  * module_scmi_driver() - Helper macro for registering a scmi driver
988  * @__scmi_driver: scmi_driver structure
989  *
990  * Helper macro for scmi drivers to set up proper module init / exit
991  * functions.  Replaces module_init() and module_exit() and keeps people from
992  * printing pointless things to the kernel log when their driver is loaded.
993  */
994 #define module_scmi_driver(__scmi_driver)	\
995 	module_driver(__scmi_driver, scmi_register, scmi_unregister)
996 
997 /**
998  * module_scmi_protocol() - Helper macro for registering a scmi protocol
999  * @__scmi_protocol: scmi_protocol structure
1000  *
1001  * Helper macro for scmi drivers to set up proper module init / exit
1002  * functions.  Replaces module_init() and module_exit() and keeps people from
1003  * printing pointless things to the kernel log when their driver is loaded.
1004  */
1005 #define module_scmi_protocol(__scmi_protocol)	\
1006 	module_driver(__scmi_protocol,		\
1007 		      scmi_protocol_register, scmi_protocol_unregister)
1008 
1009 struct scmi_protocol;
1010 int scmi_protocol_register(const struct scmi_protocol *proto);
1011 void scmi_protocol_unregister(const struct scmi_protocol *proto);
1012 
1013 /* SCMI Notification API - Custom Event Reports */
1014 enum scmi_notification_events {
1015 	SCMI_EVENT_POWER_STATE_CHANGED = 0x0,
1016 	SCMI_EVENT_CLOCK_RATE_CHANGED = 0x0,
1017 	SCMI_EVENT_CLOCK_RATE_CHANGE_REQUESTED = 0x1,
1018 	SCMI_EVENT_PERFORMANCE_LIMITS_CHANGED = 0x0,
1019 	SCMI_EVENT_PERFORMANCE_LEVEL_CHANGED = 0x1,
1020 	SCMI_EVENT_SENSOR_TRIP_POINT_EVENT = 0x0,
1021 	SCMI_EVENT_SENSOR_UPDATE = 0x1,
1022 	SCMI_EVENT_RESET_ISSUED = 0x0,
1023 	SCMI_EVENT_BASE_ERROR_EVENT = 0x0,
1024 	SCMI_EVENT_SYSTEM_POWER_STATE_NOTIFIER = 0x0,
1025 	SCMI_EVENT_POWERCAP_CAP_CHANGED = 0x0,
1026 	SCMI_EVENT_POWERCAP_MEASUREMENTS_CHANGED = 0x1,
1027 };
1028 
1029 struct scmi_power_state_changed_report {
1030 	ktime_t		timestamp;
1031 	unsigned int	agent_id;
1032 	unsigned int	domain_id;
1033 	unsigned int	power_state;
1034 };
1035 
1036 struct scmi_clock_rate_notif_report {
1037 	ktime_t			timestamp;
1038 	unsigned int		agent_id;
1039 	unsigned int		clock_id;
1040 	unsigned long long	rate;
1041 };
1042 
1043 struct scmi_system_power_state_notifier_report {
1044 	ktime_t		timestamp;
1045 	unsigned int	agent_id;
1046 #define SCMI_SYSPOWER_IS_REQUEST_GRACEFUL(flags)	((flags) & BIT(0))
1047 	unsigned int	flags;
1048 	unsigned int	system_state;
1049 	unsigned int	timeout;
1050 };
1051 
1052 struct scmi_perf_limits_report {
1053 	ktime_t		timestamp;
1054 	unsigned int	agent_id;
1055 	unsigned int	domain_id;
1056 	unsigned int	range_max;
1057 	unsigned int	range_min;
1058 	unsigned long	range_max_freq;
1059 	unsigned long	range_min_freq;
1060 };
1061 
1062 struct scmi_perf_level_report {
1063 	ktime_t		timestamp;
1064 	unsigned int	agent_id;
1065 	unsigned int	domain_id;
1066 	unsigned int	performance_level;
1067 	unsigned long	performance_level_freq;
1068 };
1069 
1070 struct scmi_sensor_trip_point_report {
1071 	ktime_t		timestamp;
1072 	unsigned int	agent_id;
1073 	unsigned int	sensor_id;
1074 	unsigned int	trip_point_desc;
1075 };
1076 
1077 struct scmi_sensor_update_report {
1078 	ktime_t				timestamp;
1079 	unsigned int			agent_id;
1080 	unsigned int			sensor_id;
1081 	unsigned int			readings_count;
1082 	struct scmi_sensor_reading	readings[];
1083 };
1084 
1085 struct scmi_reset_issued_report {
1086 	ktime_t		timestamp;
1087 	unsigned int	agent_id;
1088 	unsigned int	domain_id;
1089 	unsigned int	reset_state;
1090 };
1091 
1092 struct scmi_base_error_report {
1093 	ktime_t			timestamp;
1094 	unsigned int		agent_id;
1095 	bool			fatal;
1096 	unsigned int		cmd_count;
1097 	unsigned long long	reports[];
1098 };
1099 
1100 struct scmi_powercap_cap_changed_report {
1101 	ktime_t		timestamp;
1102 	unsigned int	agent_id;
1103 	unsigned int	domain_id;
1104 	unsigned int	power_cap;
1105 	unsigned int	pai;
1106 };
1107 
1108 struct scmi_powercap_meas_changed_report {
1109 	ktime_t		timestamp;
1110 	unsigned int	agent_id;
1111 	unsigned int	domain_id;
1112 	unsigned int	power;
1113 };
1114 #endif /* _LINUX_SCMI_PROTOCOL_H */
1115