dvfs.c File Reference

#include <zephyr/kernel.h>
#include <zephyr/logging/log.h>
#include <zephyr/sys/util.h>
#include <zephyr/drivers/misc/bh_fwtable.h>
#include <tenstorrent/msgqueue.h>
#include <tenstorrent/sys_init_defines.h>
#include "vf_curve.h"
#include "throttler.h"
#include "aiclk_ppm.h"
#include "voltage.h"
#include "init.h"
#include "reg.h"
#include "status_reg.h"

Include dependency graph for dvfs.c:

Macros
#define	DVFS_MSEC   1
#define	DVFS_TICKS   (CONFIG_SYS_CLOCK_TICKS_PER_SEC * DVFS_MSEC / MSEC_PER_SEC)
#define	DVFS_ADJUSTMENT_THRESHOLD   (DVFS_TICKS * 10 / 100) /* 10% of DVFS interval */
#define	DVFS_ADJUSTMENT_STEP   (DVFS_TICKS * 1 / 100) /* 1% of DVFS interval */

Functions
	LOG_MODULE_REGISTER (dvfs, CONFIG_TT_APP_LOG_LEVEL)
static void	atomic_max_u32 (atomic_t *target, uint32_t value)
void	DVFSChange (void)
static void	dvfs_work_handler (struct k_work *work)
static	K_WORK_DEFINE (dvfs_worker, dvfs_work_handler)
static void	dvfs_timer_handler (struct k_timer *timer)
static	K_TIMER_DEFINE (dvfs_timer, dvfs_timer_handler, NULL)
static int	InitDVFS (void)
	SYS_INIT_APP (InitDVFS)
int	StartDVFSTimer (void)
	SYS_INIT_APP (StartDVFSTimer)
void	AdjustDVFSTimer (void)
uint8_t	dvfs_counter_handler (const union request *request, struct response *response)

Variables
static const struct device *const	fwtable_dev = DEVICE_DT_GET(DT_NODELABEL(fwtable))
bool	dvfs_enabled
static atomic_t	dvfs_dropped_ticks
static atomic_t	dvfs_max_period_us
static atomic_t	dvfs_max_pass_us
static atomic_t *const	dvfs_counters [DVFS_COUNTER_COUNT]

Macro Definition Documentation

DVFS_ADJUSTMENT_STEP

#define DVFS_ADJUSTMENT_STEP   (DVFS_TICKS * 1 / 100) /* 1% of DVFS interval */

DVFS_ADJUSTMENT_THRESHOLD

#define DVFS_ADJUSTMENT_THRESHOLD   (DVFS_TICKS * 10 / 100) /* 10% of DVFS interval */

DVFS_MSEC

#define DVFS_MSEC   1

DVFS_TICKS

#define DVFS_TICKS   (CONFIG_SYS_CLOCK_TICKS_PER_SEC * DVFS_MSEC / MSEC_PER_SEC)

Function Documentation

AdjustDVFSTimer()

void AdjustDVFSTimer

(

void

)

atomic_max_u32()

void atomic_max_u32 ( atomic_t * target, uint32_t value )

static

dvfs_counter_handler()

uint8_t dvfs_counter_handler	(	const union request *	request,
		struct response *	response )

dvfs_timer_handler()

void dvfs_timer_handler ( struct k_timer * timer )

static

dvfs_work_handler()

void dvfs_work_handler ( struct k_work * work )

static

DVFSChange()

void DVFSChange

(

void

)

InitDVFS()

int InitDVFS ( void )

static

K_TIMER_DEFINE()

K_TIMER_DEFINE ( dvfs_timer , dvfs_timer_handler , NULL  )

static

K_WORK_DEFINE()

K_WORK_DEFINE ( dvfs_worker , dvfs_work_handler  )

static

LOG_MODULE_REGISTER()

LOG_MODULE_REGISTER	(	dvfs	,
		CONFIG_TT_APP_LOG_LEVEL	)

StartDVFSTimer()

int StartDVFSTimer

(

void

)

SYS_INIT_APP() [1/2]

SYS_INIT_APP

(

InitDVFS

)

SYS_INIT_APP() [2/2]

SYS_INIT_APP

(

StartDVFSTimer

)

Variable Documentation

dvfs_counters

atomic_t* const dvfs_counters[DVFS_COUNTER_COUNT]

static

Initial value:

= {
        [DVFS_COUNTER_DROPPED_TICKS] = &dvfs_dropped_ticks,
        [DVFS_COUNTER_MAX_PERIOD_US] = &dvfs_max_period_us,
        [DVFS_COUNTER_MAX_PASS_US] = &dvfs_max_pass_us,
}

dvfs_dropped_ticks

atomic_t dvfs_dropped_ticks

static

dvfs_enabled

bool dvfs_enabled

dvfs_max_pass_us

atomic_t dvfs_max_pass_us

static

dvfs_max_period_us

atomic_t dvfs_max_period_us

static

fwtable_dev

const struct device* const fwtable_dev = DEVICE_DT_GET(DT_NODELABEL(fwtable))

static