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ENTROPY_SRC Device Interface Functions More...

#include <stdbool.h>
#include <stdint.h>
#include "sw/device/lib/base/macros.h"
#include "sw/device/lib/base/mmio.h"
#include "sw/device/lib/dif/dif_base.h"

Go to the source code of this file.

Data Structures
struct	dif_entropy_src
	A handle to entropy_src. More...

Typedefs
typedef struct dif_entropy_src	dif_entropy_src_t
	A handle to entropy_src. More...

typedef enum dif_entropy_src_alert	dif_entropy_src_alert_t
	A entropy_src alert type.

typedef enum dif_entropy_src_irq	dif_entropy_src_irq_t
	A entropy_src interrupt request type.

typedef uint32_t	dif_entropy_src_irq_state_snapshot_t
	A snapshot of the state of the interrupts for this IP. More...

typedef uint32_t	dif_entropy_src_irq_enable_snapshot_t
	A snapshot of the enablement state of the interrupts for this IP. More...

Enumerations
enum	dif_entropy_src_alert { kDifEntropySrcAlertRecovAlert = 0 , kDifEntropySrcAlertFatalAlert = 1 }
	A entropy_src alert type. More...

enum	dif_entropy_src_irq { kDifEntropySrcIrqEsEntropyValid = 0 , kDifEntropySrcIrqEsHealthTestFailed = 1 , kDifEntropySrcIrqEsObserveFifoReady = 2 , kDifEntropySrcIrqEsFatalErr = 3 }
	A entropy_src interrupt request type. More...

Functions
OT_WARN_UNUSED_RESULT dif_result_t	dif_entropy_src_init (mmio_region_t base_addr, dif_entropy_src_t *entropy_src)
	Creates a new handle for a(n) entropy_src peripheral. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_entropy_src_alert_force (const dif_entropy_src_t *entropy_src, dif_entropy_src_alert_t alert)
	Forces a particular alert, causing it to be escalated as if the hardware had raised it. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_entropy_src_irq_get_type (const dif_entropy_src_t entropy_src, dif_entropy_src_irq_t irq, dif_irq_type_t type)
	Returns the type of a given interrupt (i.e., event or status) for this IP. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_entropy_src_irq_get_state (const dif_entropy_src_t entropy_src, dif_entropy_src_irq_state_snapshot_t snapshot)
	Returns the state of all interrupts (i.e., pending or not) for this IP. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_entropy_src_irq_is_pending (const dif_entropy_src_t entropy_src, dif_entropy_src_irq_t irq, bool is_pending)
	Returns whether a particular interrupt is currently pending. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_entropy_src_irq_acknowledge_state (const dif_entropy_src_t *entropy_src, dif_entropy_src_irq_state_snapshot_t snapshot)
	Acknowledges all interrupts that were pending at the time of the state snapshot. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_entropy_src_irq_acknowledge_all (const dif_entropy_src_t *entropy_src)
	Acknowledges all interrupts, indicating to the hardware that all interrupts have been successfully serviced. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_entropy_src_irq_acknowledge (const dif_entropy_src_t *entropy_src, dif_entropy_src_irq_t irq)
	Acknowledges a particular interrupt, indicating to the hardware that it has been successfully serviced. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_entropy_src_irq_force (const dif_entropy_src_t *entropy_src, dif_entropy_src_irq_t irq, const bool val)
	Forces a particular interrupt, causing it to be serviced as if hardware had asserted it. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_entropy_src_irq_get_enabled (const dif_entropy_src_t entropy_src, dif_entropy_src_irq_t irq, dif_toggle_t state)
	Checks whether a particular interrupt is currently enabled or disabled. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_entropy_src_irq_set_enabled (const dif_entropy_src_t *entropy_src, dif_entropy_src_irq_t irq, dif_toggle_t state)
	Sets whether a particular interrupt is currently enabled or disabled. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_entropy_src_irq_disable_all (const dif_entropy_src_t entropy_src, dif_entropy_src_irq_enable_snapshot_t snapshot)
	Disables all interrupts, optionally snapshotting all enable states for later restoration. More...

OT_WARN_UNUSED_RESULT dif_result_t	dif_entropy_src_irq_restore_all (const dif_entropy_src_t entropy_src, const dif_entropy_src_irq_enable_snapshot_t snapshot)
	Restores interrupts from the given (enable) snapshot. More...

Detailed Description

ENTROPY_SRC Device Interface Functions

Definition in file dif_entropy_src_autogen.h.

Data Structure Documentation

◆ dif_entropy_src

struct dif_entropy_src

A handle to entropy_src.

This type should be treated as opaque by users.

Definition at line 33 of file dif_entropy_src_autogen.h.

Data Fields
mmio_region_t	base_addr	The base address for the entropy_src hardware registers.

Typedef Documentation

◆ dif_entropy_src_irq_enable_snapshot_t

typedef uint32_t dif_entropy_src_irq_enable_snapshot_t

A snapshot of the enablement state of the interrupts for this IP.

This is an opaque type, to be used with the dif_entropy_src_irq_disable_all() and dif_entropy_src_irq_restore_all() functions.

Definition at line 212 of file dif_entropy_src_autogen.h.

◆ dif_entropy_src_irq_state_snapshot_t

typedef uint32_t dif_entropy_src_irq_state_snapshot_t

A snapshot of the state of the interrupts for this IP.

This is an opaque type, to be used with the dif_entropy_src_irq_get_state() and dif_entropy_src_irq_acknowledge_state() functions.

Definition at line 115 of file dif_entropy_src_autogen.h.

◆ dif_entropy_src_t

typedef struct dif_entropy_src dif_entropy_src_t

A handle to entropy_src.

This type should be treated as opaque by users.

Enumeration Type Documentation

◆ dif_entropy_src_alert

enum dif_entropy_src_alert

A entropy_src alert type.

Enumerator
kDifEntropySrcAlertRecovAlert	This alert is triggered upon the alert health test threshold criteria not met.
kDifEntropySrcAlertFatalAlert	This alert triggers for any condition detected in the !!ERR_CODE register, which includes FIFO errors, COUNTER errors, FSM state errors, and also when integrity failures are detected on the TL-UL bus.

Definition at line 56 of file dif_entropy_src_autogen.h.

◆ dif_entropy_src_irq

enum dif_entropy_src_irq

A entropy_src interrupt request type.

Enumerator
kDifEntropySrcIrqEsEntropyValid	Asserted when entropy source bits are available for firmware for consumption via !!ENTROPY_DATA register.
kDifEntropySrcIrqEsHealthTestFailed	Asserted whenever the main state machine is in the alert state, e.g., due to health tests failing and reaching the threshold value configured in !!ALERT_THRESHOLD.
kDifEntropySrcIrqEsObserveFifoReady	Asserted when the observe FIFO has filled to the configured threshold level (see !!OBSERVE_FIFO_THRESH).
kDifEntropySrcIrqEsFatalErr	Asserted when an fatal error condition is met, e.g., upon FIFO errors, or if an illegal state machine state is reached.

Definition at line 85 of file dif_entropy_src_autogen.h.

Function Documentation

◆ dif_entropy_src_alert_force()

OT_WARN_UNUSED_RESULT dif_result_t dif_entropy_src_alert_force	(	const dif_entropy_src_t *	entropy_src,
		dif_entropy_src_alert_t	alert
	)

Forces a particular alert, causing it to be escalated as if the hardware had raised it.

Parameters

entropy_src	A entropy_src handle.
alert	The alert to force.

Returns: The result of the operation.

Definition at line 28 of file dif_entropy_src_autogen.c.

◆ dif_entropy_src_init()

OT_WARN_UNUSED_RESULT dif_result_t dif_entropy_src_init	(	mmio_region_t	base_addr,
		dif_entropy_src_t *	entropy_src
	)

Creates a new handle for a(n) entropy_src peripheral.

This function does not actuate the hardware.

Parameters

	base_addr	The MMIO base address of the entropy_src peripheral.
[out]	entropy_src	Out param for the initialized handle.

Returns: The result of the operation.

Definition at line 17 of file dif_entropy_src_autogen.c.

◆ dif_entropy_src_irq_acknowledge()

OT_WARN_UNUSED_RESULT dif_result_t dif_entropy_src_irq_acknowledge	(	const dif_entropy_src_t *	entropy_src,
		dif_entropy_src_irq_t	irq
	)

Acknowledges a particular interrupt, indicating to the hardware that it has been successfully serviced.

Parameters

entropy_src	A entropy_src handle.
irq	An interrupt request.

Returns: The result of the operation.

Definition at line 164 of file dif_entropy_src_autogen.c.

◆ dif_entropy_src_irq_acknowledge_all()

OT_WARN_UNUSED_RESULT dif_result_t dif_entropy_src_irq_acknowledge_all ( const dif_entropy_src_t * entropy_src )

Acknowledges all interrupts, indicating to the hardware that all interrupts have been successfully serviced.

Parameters

entropy_src A entropy_src handle.

Returns: The result of the operation.

Definition at line 150 of file dif_entropy_src_autogen.c.

◆ dif_entropy_src_irq_acknowledge_state()

OT_WARN_UNUSED_RESULT dif_result_t dif_entropy_src_irq_acknowledge_state	(	const dif_entropy_src_t *	entropy_src,
		dif_entropy_src_irq_state_snapshot_t	snapshot
	)

Acknowledges all interrupts that were pending at the time of the state snapshot.

Parameters

entropy_src	A entropy_src handle.
snapshot	Interrupt state snapshot.

Returns: The result of the operation.

Definition at line 115 of file dif_entropy_src_autogen.c.

◆ dif_entropy_src_irq_disable_all()

OT_WARN_UNUSED_RESULT dif_result_t dif_entropy_src_irq_disable_all	(	const dif_entropy_src_t *	entropy_src,
		dif_entropy_src_irq_enable_snapshot_t *	snapshot
	)

Disables all interrupts, optionally snapshotting all enable states for later restoration.

Parameters

	entropy_src	A entropy_src handle.
[out]	snapshot	Out-param for the snapshot; may be `NULL`.

Returns: The result of the operation.

Definition at line 253 of file dif_entropy_src_autogen.c.

◆ dif_entropy_src_irq_force()

OT_WARN_UNUSED_RESULT dif_result_t dif_entropy_src_irq_force	(	const dif_entropy_src_t *	entropy_src,
		dif_entropy_src_irq_t	irq,
		const bool	val
	)

Forces a particular interrupt, causing it to be serviced as if hardware had asserted it.

Parameters

entropy_src	A entropy_src handle.
irq	An interrupt request.
val	Value to be set.

Returns: The result of the operation.

Definition at line 185 of file dif_entropy_src_autogen.c.

◆ dif_entropy_src_irq_get_enabled()

OT_WARN_UNUSED_RESULT dif_result_t dif_entropy_src_irq_get_enabled	(	const dif_entropy_src_t *	entropy_src,
		dif_entropy_src_irq_t	irq,
		dif_toggle_t *	state
	)

Checks whether a particular interrupt is currently enabled or disabled.

Parameters

	entropy_src	A entropy_src handle.
	irq	An interrupt request.
[out]	state	Out-param toggle state of the interrupt.

Returns: The result of the operation.

Definition at line 206 of file dif_entropy_src_autogen.c.

◆ dif_entropy_src_irq_get_state()

OT_WARN_UNUSED_RESULT dif_result_t dif_entropy_src_irq_get_state	(	const dif_entropy_src_t *	entropy_src,
		dif_entropy_src_irq_state_snapshot_t *	snapshot
	)

Returns the state of all interrupts (i.e., pending or not) for this IP.

Parameters

	entropy_src	A entropy_src handle.
[out]	snapshot	Out-param for interrupt state snapshot.

Returns: The result of the operation.

Definition at line 101 of file dif_entropy_src_autogen.c.

◆ dif_entropy_src_irq_get_type()

OT_WARN_UNUSED_RESULT dif_result_t dif_entropy_src_irq_get_type	(	const dif_entropy_src_t *	entropy_src,
		dif_entropy_src_irq_t	irq,
		dif_irq_type_t *	type
	)

Returns the type of a given interrupt (i.e., event or status) for this IP.

Parameters

	entropy_src	A entropy_src handle.
	irq	An interrupt request.
[out]	type	Out-param for the interrupt type.

Returns: The result of the operation.

Definition at line 87 of file dif_entropy_src_autogen.c.

◆ dif_entropy_src_irq_is_pending()

OT_WARN_UNUSED_RESULT dif_result_t dif_entropy_src_irq_is_pending	(	const dif_entropy_src_t *	entropy_src,
		dif_entropy_src_irq_t	irq,
		bool *	is_pending
	)

Returns whether a particular interrupt is currently pending.

Parameters

	entropy_src	A entropy_src handle.
	irq	An interrupt request.
[out]	is_pending	Out-param for whether the interrupt is pending.

Returns: The result of the operation.

Definition at line 129 of file dif_entropy_src_autogen.c.

◆ dif_entropy_src_irq_restore_all()

OT_WARN_UNUSED_RESULT dif_result_t dif_entropy_src_irq_restore_all	(	const dif_entropy_src_t *	entropy_src,
		const dif_entropy_src_irq_enable_snapshot_t *	snapshot
	)

Restores interrupts from the given (enable) snapshot.

Parameters

entropy_src	A entropy_src handle.
snapshot	A snapshot to restore from.

Returns: The result of the operation.

Definition at line 274 of file dif_entropy_src_autogen.c.

◆ dif_entropy_src_irq_set_enabled()

OT_WARN_UNUSED_RESULT dif_result_t dif_entropy_src_irq_set_enabled	(	const dif_entropy_src_t *	entropy_src,
		dif_entropy_src_irq_t	irq,
		dif_toggle_t	state
	)

Sets whether a particular interrupt is currently enabled or disabled.

Parameters

entropy_src	A entropy_src handle.
irq	An interrupt request.
state	The new toggle state for the interrupt.

Returns: The result of the operation.

Definition at line 228 of file dif_entropy_src_autogen.c.

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Data Structures

Typedefs

Enumerations

Functions

Detailed Description

Data Structure Documentation

◆ dif_entropy_src

Typedef Documentation

◆ dif_entropy_src_irq_enable_snapshot_t

◆ dif_entropy_src_irq_state_snapshot_t

◆ dif_entropy_src_t

Enumeration Type Documentation

◆ dif_entropy_src_alert

◆ dif_entropy_src_irq

Function Documentation

◆ dif_entropy_src_alert_force()

◆ dif_entropy_src_init()

◆ dif_entropy_src_irq_acknowledge()

◆ dif_entropy_src_irq_acknowledge_all()

◆ dif_entropy_src_irq_acknowledge_state()

◆ dif_entropy_src_irq_disable_all()

◆ dif_entropy_src_irq_force()

◆ dif_entropy_src_irq_get_enabled()

◆ dif_entropy_src_irq_get_state()

◆ dif_entropy_src_irq_get_type()

◆ dif_entropy_src_irq_is_pending()

◆ dif_entropy_src_irq_restore_all()

◆ dif_entropy_src_irq_set_enabled()