cm2dm_msg.c File Reference

CMFW to DMFW message handling. More...

#include <string.h>
#include <zephyr/kernel.h>
#include <zephyr/drivers/misc/bh_fwtable.h>
#include <zephyr/drivers/watchdog.h>
#include <zephyr/drivers/uart.h>
#include <zephyr/sys/byteorder.h>
#include <zephyr/sys/crc.h>
#include <tenstorrent/smc_msg.h>
#include <tenstorrent/msgqueue.h>
#include "cm2dm_msg.h"
#include "asic_state.h"
#include "reg.h"
#include "status_reg.h"
#include "fan_ctrl.h"
#include "telemetry.h"
#include "dvfs.h"

Data Structures
struct	Cm2DmMsgState

Functions
	K_SEM_DEFINE (dmfw_ping_sem, 0, 1)
void	PostCm2DmMsg (Cm2DmMsgId msg_id, uint32_t data)
static Cm2DmMsgId	next_id_rr (uint32_t pending_messages)
int32_t	Cm2DmMsgReqSmbusHandler (uint8_t *data, uint8_t *size)
int32_t	Cm2DmMsgAckSmbusHandler (const uint8_t *data, uint8_t size)
void	IssueChipReset (Cm2DmResetLevel reset_level)
void	ChipResetRequest (void *arg)
void	UpdateFanSpeedRequest (uint32_t fan_speed)
void	UpdateForcedFanSpeedRequest (uint32_t fan_speed)
void	Dm2CmReadyRequest (void)
void	UpdateAutoResetTimeoutRequest (uint32_t timeout)
void	UpdateTelemHeartbeatRequest (uint32_t heartbeat)
void	RequestLedBlink (uint32_t blink_mode)
void	reset_request_handler (struct k_timer *timer)
	K_TIMER_DEFINE (reset_timer, reset_request_handler, NULL)
static uint8_t	reset_dm_handler (const union request *request, struct response *response)
	Handler for TT_SMC_MSG_TRIGGER_RESET.
	REGISTER_MESSAGE (TT_SMC_MSG_TRIGGER_RESET, reset_dm_handler)
static uint8_t	ping_dm_handler (const union request *request, struct response *response)
	Handler for host request to ping DMC.
	REGISTER_MESSAGE (TT_SMC_MSG_PING_DM, ping_dm_handler)
static uint8_t	set_watchdog_timeout (const union request *request, struct response *response)
	Handler for TT_SMC_MSG_SET_WDT_TIMEOUT.
	REGISTER_MESSAGE (TT_SMC_MSG_SET_WDT_TIMEOUT, set_watchdog_timeout)
int32_t	Dm2CmSendDataHandler (const uint8_t *data, uint8_t size)
int32_t	Dm2CmPingHandler (const uint8_t *data, uint8_t size)
int32_t	Dm2CmPingV2 (uint8_t *data, uint8_t *size)
int32_t	Dm2CmSendPowerHandler (const uint8_t *data, uint8_t size)
uint16_t	GetInputPower (void)
int32_t	Dm2CmSendFanRPMHandler (const uint8_t *data, uint8_t size)
int32_t	SMBusTelemRegHandler (const uint8_t *data, uint8_t size)
int32_t	SMBusTelemDataHandler (uint8_t *data, uint8_t *size)
int32_t	Dm2CmSendThermTripCountHandler (const uint8_t *data, uint8_t size)
int32_t	Dm2CmWriteTelemetry (const uint8_t *data, uint8_t size)
int32_t	Dm2CmReadControlData (uint8_t *data, uint8_t *size)
int32_t	Dm2CmDMCLogHandler (const uint8_t *data, uint8_t size)

Variables
static const struct device *const	fwtable_dev = DEVICE_DT_GET(DT_NODELABEL(fwtable))
static Cm2DmMsgState	cm2dm_msg_state
static uint16_t	power
static uint16_t	telemetry_reg
struct {
uint8_t   chip_reset_asic_called: 1
uint8_t   chip_reset_dmc_called: 1
}	chip_reset_state
static uint8_t	reset_type
const struct device *	dmc_uart = DEVICE_DT_GET_OR_NULL(DT_ALIAS(dmc_vuart))

Detailed Description

CMFW to DMFW message handling.

Function Documentation

ChipResetRequest()

void ChipResetRequest

(

void *

arg

)

Cm2DmMsgAckSmbusHandler()

int32_t Cm2DmMsgAckSmbusHandler	(	const uint8_t *	data,
		uint8_t	size )

Cm2DmMsgReqSmbusHandler()

int32_t Cm2DmMsgReqSmbusHandler	(	uint8_t *	data,
		uint8_t *	size )

Dm2CmDMCLogHandler()

int32_t Dm2CmDMCLogHandler	(	const uint8_t *	data,
		uint8_t	size )

Dm2CmPingHandler()

int32_t Dm2CmPingHandler	(	const uint8_t *	data,
		uint8_t	size )

Dm2CmPingV2()

int32_t Dm2CmPingV2	(	uint8_t *	data,
		uint8_t *	size )

Dm2CmReadControlData()

int32_t Dm2CmReadControlData	(	uint8_t *	data,
		uint8_t *	size )

Dm2CmReadyRequest()

void Dm2CmReadyRequest

(

void

)

Dm2CmSendDataHandler()

int32_t Dm2CmSendDataHandler	(	const uint8_t *	data,
		uint8_t	size )

Dm2CmSendFanRPMHandler()

int32_t Dm2CmSendFanRPMHandler	(	const uint8_t *	data,
		uint8_t	size )

Dm2CmSendPowerHandler()

int32_t Dm2CmSendPowerHandler	(	const uint8_t *	data,
		uint8_t	size )

Dm2CmSendThermTripCountHandler()

int32_t Dm2CmSendThermTripCountHandler	(	const uint8_t *	data,
		uint8_t	size )

Dm2CmWriteTelemetry()

int32_t Dm2CmWriteTelemetry	(	const uint8_t *	data,
		uint8_t	size )

GetInputPower()

uint16_t GetInputPower

(

void

)

IssueChipReset()

void IssueChipReset

(

Cm2DmResetLevel

reset_level

)

K_SEM_DEFINE()

K_SEM_DEFINE	(	dmfw_ping_sem	,
		0	,
		1	)

K_TIMER_DEFINE()

K_TIMER_DEFINE	(	reset_timer	,
		reset_request_handler	,
		NULL	)

next_id_rr()

Cm2DmMsgId next_id_rr ( uint32_t pending_messages )

static

ping_dm_handler()

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

static

Handler for host request to ping DMC.

Handler for a host request to ping the DMC. This request is used to test SMBUS stability.

Parameters

[in]	request	The request, of type dmc_ping_rqst, with command code TT_SMC_MSG_PING_DM to ping the DMC. If dmc_ping_rqst::legacy_ping is false, The SMC requests a block read; otherwise, the SMC requests a block write.
[out]	response	The response to the host. Set to 1 if DMC is alive, 0 otherwise.

Returns

0

PostCm2DmMsg()

void PostCm2DmMsg	(	Cm2DmMsgId	msg_id,
		uint32_t	data )

REGISTER_MESSAGE() [1/3]

REGISTER_MESSAGE	(	TT_SMC_MSG_PING_DM	,
		ping_dm_handler	)

REGISTER_MESSAGE() [2/3]

REGISTER_MESSAGE	(	TT_SMC_MSG_SET_WDT_TIMEOUT	,
		set_watchdog_timeout	)

REGISTER_MESSAGE() [3/3]

REGISTER_MESSAGE	(	TT_SMC_MSG_TRIGGER_RESET	,
		reset_dm_handler	)

RequestLedBlink()

void RequestLedBlink

(

uint32_t

blink_mode

)

reset_dm_handler()

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

static

Handler for TT_SMC_MSG_TRIGGER_RESET.

See also

trigger_reset_rqst

reset_request_handler()

void reset_request_handler

(

struct k_timer *

timer

)

set_watchdog_timeout()

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

static

Handler for TT_SMC_MSG_SET_WDT_TIMEOUT.

Handler for a host request to set the watchdog timeout value. This can be used to configure the watchdog timer period or disable it entirely.

Parameters

[in]	request	The request, of type set_wdt_timeout_rqst, with command code TT_SMC_MSG_SET_WDT_TIMEOUT. The set_wdt_timeout_rqst::timeout_ms field specifies the timeout value in milliseconds. If set to 0, the watchdog is disabled.
[out]	response	The response to the host (unused for this handler).

Return values

0	Success
ENODEV	Watchdog device is not ready
ENOTSUP	Timeout is below the minimum feed interval

Returns

Other error codes for watchdog setup failures

See also

set_wdt_timeout_rqst

SMBusTelemDataHandler()

int32_t SMBusTelemDataHandler	(	uint8_t *	data,
		uint8_t *	size )

SMBusTelemRegHandler()

int32_t SMBusTelemRegHandler	(	const uint8_t *	data,
		uint8_t	size )

UpdateAutoResetTimeoutRequest()

void UpdateAutoResetTimeoutRequest

(

uint32_t

timeout

)

UpdateFanSpeedRequest()

void UpdateFanSpeedRequest

(

uint32_t

fan_speed

)

UpdateForcedFanSpeedRequest()

void UpdateForcedFanSpeedRequest

(

uint32_t

fan_speed

)

UpdateTelemHeartbeatRequest()

void UpdateTelemHeartbeatRequest

(

uint32_t

heartbeat

)

Variable Documentation

chip_reset_asic_called

uint8_t chip_reset_asic_called

chip_reset_dmc_called

uint8_t chip_reset_dmc_called

[struct]

struct { ... } chip_reset_state

cm2dm_msg_state

Cm2DmMsgState cm2dm_msg_state

static

dmc_uart

const struct device* dmc_uart = DEVICE_DT_GET_OR_NULL(DT_ALIAS(dmc_vuart))

fwtable_dev

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

static

power

uint16_t power

static

reset_type

uint8_t reset_type

static

telemetry_reg

uint16_t telemetry_reg

static