Device Tables (DT) for IP csrng and top darjeeling. More...

#include "hw/top/dt/csrng.h"

Data Structures
struct	dt_desc_csrng
	Description of instances. More...

Macros
#define	TRY_GET_DT(dt, default)
	Return a pointer to the `dt_csrng_desc_t` structure of the requested `dt` if it's a valid index.

Typedefs
typedef struct dt_desc_csrng	dt_desc_csrng_t
	Description of instances.

Functions
dt_csrng_t	dt_csrng_from_instance_id (dt_instance_id_t inst_id)
	Get the csrng instance from an instance ID.

dt_instance_id_t	dt_csrng_instance_id (dt_csrng_t dt)
	Get the instance ID of an instance.

uint32_t	dt_csrng_reg_block (dt_csrng_t dt, dt_csrng_reg_block_t reg_block)
	Get the register base address of an instance.

dt_plic_irq_id_t	dt_csrng_irq_to_plic_id (dt_csrng_t dt, dt_csrng_irq_t irq)
	Get the PLIC ID of a csrng IRQ for a given instance.

dt_csrng_irq_t	dt_csrng_irq_from_plic_id (dt_csrng_t dt, dt_plic_irq_id_t irq)
	Convert a global IRQ ID to a local csrng IRQ type.

dt_alert_id_t	dt_csrng_alert_to_alert_id (dt_csrng_t dt, dt_csrng_alert_t alert)
	Get the alert ID of a csrng alert for a given instance.

dt_csrng_alert_t	dt_csrng_alert_from_alert_id (dt_csrng_t dt, dt_alert_id_t alert)
	Convert a global alert ID to a local csrng alert type.

dt_clock_t	dt_csrng_clock (dt_csrng_t dt, dt_csrng_clock_t clk)
	Get the clock signal connected to a clock port of an instance.

dt_reset_t	dt_csrng_reset (dt_csrng_t dt, dt_csrng_reset_t rst)
	Get the reset signal connected to a reset port of an instance.

Detailed Description

Device Tables (DT) for IP csrng and top darjeeling.

Definition in file csrng.c.

Data Structure Documentation

◆ dt_desc_csrng

struct dt_desc_csrng

Description of instances.

Definition at line 19 of file csrng.c.

Data Fields
dt_clock_t	clock[kDtCsrngClockCount]	Clock signal connected to each clock port.
top_darjeeling_alert_id_t	first_alert	Alert ID of the first Alert of this instance. This value is undefined if the block is not connected to the Alert Handler.
top_earlgrey_alert_id_t	first_alert	Alert ID of the first Alert of this instance. This value is undefined if the block is not connected to the Alert Handler.
top_darjeeling_plic_irq_id_t	first_irq	PLIC ID of the first IRQ of this instance. This can be `kDtPlicIrqIdNone` if the block is not connected to the PLIC.
top_earlgrey_plic_irq_id_t	first_irq	PLIC ID of the first IRQ of this instance. This can be `kDtPlicIrqIdNone` if the block is not connected to the PLIC.
dt_instance_id_t	inst_id	Instance ID.
uint32_t	reg_addr[kDtCsrngRegBlockCount]	Base address of each register block.
dt_reset_t	reset[kDtCsrngResetCount]	Reset signal connected to each reset port.

Macro Definition Documentation

◆ TRY_GET_DT

#define TRY_GET_DT	(		dt,
			default )

Value:

({ if ((dt) < (dt_csrng_t)0 || (int)(dt) >= kDtCsrngCount) return (default); &csrng_desc[dt]; })

Return a pointer to the dt_csrng_desc_t structure of the requested dt if it's a valid index.

Otherwise, this macro will return (i.e. exit the function) with the provided default value.

Definition at line 63 of file csrng.c.

Function Documentation

◆ dt_csrng_alert_from_alert_id()

dt_csrng_alert_t dt_csrng_alert_from_alert_id	(	dt_csrng_t	dt,
		dt_alert_id_t	alert )

Convert a global alert ID to a local csrng alert type.

Parameters

dt	Instance of csrng.
alert	A global alert ID that belongs to this instance.

Returns: The csrng alert, or kDtCsrngAlertCount.

Note: This function assumes that the global alert ID belongs to the instance of csrng passed in parameter. In other words, it must be the case that dt_csrng_instance_id(dt) == dt_alert_id_to_instance_id(alert). Otherwise, this function will return kDtCsrngAlertCount.

Definition at line 115 of file csrng.c.

◆ dt_csrng_alert_to_alert_id()

dt_alert_id_t dt_csrng_alert_to_alert_id	(	dt_csrng_t	dt,
		dt_csrng_alert_t	alert )

Get the alert ID of a csrng alert for a given instance.

Note: This function only makes sense if the instance is connected to the Alert Handler. For any instances where the instance is not connected, the return value is unspecified.

Parameters

dt	Instance of csrng.
alert	A csrng alert.

Returns: The Alert Handler alert ID of the alert of this instance.

Definition at line 109 of file csrng.c.

◆ dt_csrng_clock()

dt_clock_t dt_csrng_clock	(	dt_csrng_t	dt,
		dt_csrng_clock_t	clk )

Get the clock signal connected to a clock port of an instance.

Parameters

dt	Instance of csrng.
clk	Clock port.

Returns: Clock signal.

Definition at line 127 of file csrng.c.

◆ dt_csrng_from_instance_id()

dt_csrng_t dt_csrng_from_instance_id ( dt_instance_id_t inst_id )

Get the csrng instance from an instance ID.

For example, dt_uart_from_instance_id(kDtInstanceIdUart3) == kDtUart3.

Parameters

inst_id Instance ID.

Returns: A csrng instance.

Note: This function only makes sense if the instance ID has device type csrng, otherwise the returned value is unspecified.

Definition at line 65 of file csrng.c.

◆ dt_csrng_instance_id()

dt_instance_id_t dt_csrng_instance_id ( dt_csrng_t dt )

Get the instance ID of an instance.

Parameters

dt	Instance of csrng.

Returns: The instance ID of that instance.

Definition at line 72 of file csrng.c.

◆ dt_csrng_irq_from_plic_id()

dt_csrng_irq_t dt_csrng_irq_from_plic_id	(	dt_csrng_t	dt,
		dt_plic_irq_id_t	irq )

Convert a global IRQ ID to a local csrng IRQ type.

Parameters

dt	Instance of csrng.
irq	A PLIC ID that belongs to this instance.

Returns: The csrng IRQ, or kDtCsrngIrqCount.

Note: This function assumes that the PLIC ID belongs to the instance of csrng passed in parameter. In other words, it must be the case that dt_csrng_instance_id(dt) == dt_plic_id_to_instance_id(irq). Otherwise, this function will return kDtCsrngIrqCount.

Definition at line 94 of file csrng.c.

◆ dt_csrng_irq_to_plic_id()

dt_plic_irq_id_t dt_csrng_irq_to_plic_id	(	dt_csrng_t	dt,
		dt_csrng_irq_t	irq )

Get the PLIC ID of a csrng IRQ for a given instance.

If the instance is not connected to the PLIC, this function will return kDtPlicIrqIdNone.

Parameters

dt	Instance of csrng.
irq	A csrng IRQ.

Returns: The PLIC ID of the IRQ of this instance.

Definition at line 84 of file csrng.c.

◆ dt_csrng_reg_block()

uint32_t dt_csrng_reg_block	(	dt_csrng_t	dt,
		dt_csrng_reg_block_t	reg_block )

Get the register base address of an instance.

Parameters

dt	Instance of csrng.
reg_block	The register block requested.

Returns: The register base address of the requested block.

Definition at line 77 of file csrng.c.

◆ dt_csrng_reset()

dt_reset_t dt_csrng_reset	(	dt_csrng_t	dt,
		dt_csrng_reset_t	rst )

Get the reset signal connected to a reset port of an instance.

Parameters

dt	Instance of csrng.
rst	Reset port.

Returns: Reset signal.

Definition at line 134 of file csrng.c.

Data Structures

Macros

Typedefs

Functions

Detailed Description

Data Structure Documentation

◆ dt_desc_csrng

Macro Definition Documentation

◆ TRY_GET_DT

Function Documentation

◆ dt_csrng_alert_from_alert_id()

◆ dt_csrng_alert_to_alert_id()

◆ dt_csrng_clock()

◆ dt_csrng_from_instance_id()

◆ dt_csrng_instance_id()

◆ dt_csrng_irq_from_plic_id()

◆ dt_csrng_irq_to_plic_id()

◆ dt_csrng_reg_block()

◆ dt_csrng_reset()