reset.c File Reference

#include "cm2dm_msg.h"
#include "eth.h"
#include "gddr.h"
#include "harvesting.h"
#include "init.h"
#include "irqnum.h"
#include "noc.h"
#include "noc_init.h"
#include "noc2axi.h"
#include "reg.h"
#include "status_reg.h"
#include "tensix.h"
#include "tensix_init.h"
#include "aiclk_ppm.h"
#include "bh_reset.h"
#include <tenstorrent/bh_power.h>
#include <stdint.h>
#include <tenstorrent/msgqueue.h>
#include <tenstorrent/smc_msg.h>
#include <tenstorrent/post_code.h>
#include <tenstorrent/sys_init_defines.h>
#include <tenstorrent/tt_boot_fs.h>
#include <zephyr/drivers/misc/bh_fwtable.h>
#include <zephyr/init.h>
#include <zephyr/kernel.h>
#include <zephyr/logging/log.h>
#include <zephyr/sys/util.h>
#include <zephyr/toolchain.h>
#include <zephyr/device.h>
#include <zephyr/devicetree.h>
#include <zephyr/drivers/clock_control/clock_control_tt_bh.h>
#include <zephyr/drivers/clock_control.h>

Include dependency graph for reset.c:

Macros
#define	DT_DRV_COMPAT   tenstorrent_bh_clock_control
#define	PLL_DEVICE_INIT(inst)

Functions
	LOG_MODULE_REGISTER (InitHW, CONFIG_TT_APP_LOG_LEVEL)
void	record_init_failure (enum init_stage_id stage)
	Record a failure from an init function.
bool	is_cable_fault_mode (void)
	Check if the system is in cable fault mode.
void	bh_soft_reset_all_tensix (void)
static int	AssertSoftResets (void)
	SYS_INIT_APP (AssertSoftResets)
static int	DeassertRiscvResets (void)
	SYS_INIT_APP (DeassertRiscvResets)
static __maybe_unused uint8_t	ToggleTensixReset (const union request *req, struct response *rsp)
	Handler for TT_SMC_MSG_TOGGLE_TENSIX_RESET.
	REGISTER_MESSAGE (TT_SMC_MSG_TOGGLE_TENSIX_RESET, ToggleTensixReset)
static __maybe_unused uint8_t	ToggleSingleTensixReset (const union request *req, struct response *rsp)
	REGISTER_MESSAGE (TT_SMC_MSG_TOGGLE_SINGLE_TENSIX_RESET, ToggleSingleTensixReset)
static __maybe_unused uint8_t	ReinitTensix (const union request *req, struct response *rsp)
	Handler for TT_SMC_MSG_REINIT_TENSIX.
	REGISTER_MESSAGE (TT_SMC_MSG_REINIT_TENSIX, ReinitTensix)
static int	DeassertTileResets (void)
	SYS_INIT_APP (DeassertTileResets)

Variables
static const struct device *const	pll_devs [] = {DT_INST_FOREACH_STATUS_OKAY(PLL_DEVICE_INIT)}
static const struct device *const	fwtable_dev = DEVICE_DT_GET(DT_NODELABEL(fwtable))
uint32_t	error_status0
static bool	cable_fault_mode
static const uint8_t	kNocRing
static const uint8_t	kNocTlb
static const uint32_t	kSoftReset0Addr = 0xFFB121B0
static const uint32_t	kAllRiscSoftReset = 0x47800

Macro Definition Documentation

DT_DRV_COMPAT

#define DT_DRV_COMPAT   tenstorrent_bh_clock_control

PLL_DEVICE_INIT

#define PLL_DEVICE_INIT

(

inst

)

Value:

DEVICE_DT_INST_GET(inst),

Function Documentation

AssertSoftResets()

int AssertSoftResets ( void )

static

bh_soft_reset_all_tensix()

void bh_soft_reset_all_tensix

(

void

)

DeassertRiscvResets()

int DeassertRiscvResets ( void )

static

DeassertTileResets()

int DeassertTileResets ( void )

static

is_cable_fault_mode()

bool is_cable_fault_mode

(

void

)

Check if the system is in cable fault mode.

Cable fault mode is entered when DMC reports 0W power limit (no cable or improper installation). In this mode, all tiles except column 15 are clock-gated via NIU_CFG_0 TILE_CLK_OFF to minimize power draw while the full NOC mesh and ARC-PCIe path remain available for host communication.

Returns

true if cable fault mode is active, false otherwise

LOG_MODULE_REGISTER()

LOG_MODULE_REGISTER	(	InitHW	,
		CONFIG_TT_APP_LOG_LEVEL	)

record_init_failure()

void record_init_failure

(

enum init_stage_id

stage

)

Record a failure from an init function.

Sets bit stage in STATUS_ERROR_STATUS0 and writes the shadow value through to scratch RAM immediately so the host can read it even if init hangs after this call. Safe to call multiple times; the bitmap accumulates.

REGISTER_MESSAGE() [1/3]

REGISTER_MESSAGE	(	TT_SMC_MSG_REINIT_TENSIX	,
		ReinitTensix	)

REGISTER_MESSAGE() [2/3]

REGISTER_MESSAGE	(	TT_SMC_MSG_TOGGLE_SINGLE_TENSIX_RESET	,
		ToggleSingleTensixReset	)

REGISTER_MESSAGE() [3/3]

REGISTER_MESSAGE	(	TT_SMC_MSG_TOGGLE_TENSIX_RESET	,
		ToggleTensixReset	)

ReinitTensix()

__maybe_unused uint8_t ReinitTensix ( const union request * req, struct response * rsp )

static

Handler for TT_SMC_MSG_REINIT_TENSIX.

See also

reinit_tensix_rqst

Redo Tensix init that gets cleared on Tensix reset. This includes all NOC programming and any programming within the tile.

SYS_INIT_APP() [1/3]

SYS_INIT_APP

(

AssertSoftResets

)

SYS_INIT_APP() [2/3]

SYS_INIT_APP

(

DeassertRiscvResets

)

SYS_INIT_APP() [3/3]

SYS_INIT_APP

(

DeassertTileResets

)

ToggleSingleTensixReset()

__maybe_unused uint8_t ToggleSingleTensixReset ( const union request * req, struct response * rsp )

static

ToggleTensixReset()

__maybe_unused uint8_t ToggleTensixReset ( const union request * req, struct response * rsp )

static

Handler for TT_SMC_MSG_TOGGLE_TENSIX_RESET.

See also

toggle_tensix_reset_rqst

Variable Documentation

cable_fault_mode

bool cable_fault_mode

static

error_status0

uint32_t error_status0

fwtable_dev

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

static

kAllRiscSoftReset

const uint32_t kAllRiscSoftReset = 0x47800

static

kNocRing

const uint8_t kNocRing

static

kNocTlb

const uint8_t kNocTlb

static

kSoftReset0Addr

const uint32_t kSoftReset0Addr = 0xFFB121B0

static

pll_devs

const struct device* const pll_devs[] = {DT_INST_FOREACH_STATUS_OKAY(PLL_DEVICE_INIT)}

static