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

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

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

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

Typedefs
typedef struct dt_desc_uart	dt_desc_uart_t
	Description of instances.

Functions
dt_uart_t	dt_uart_from_instance_id (dt_instance_id_t inst_id)
	Get the uart instance from an instance ID.

dt_instance_id_t	dt_uart_instance_id (dt_uart_t dt)
	Get the instance ID of an instance.

uint32_t	dt_uart_reg_block (dt_uart_t dt, dt_uart_reg_block_t reg_block)
	Get the register base address of an instance.

uint32_t	dt_uart_memory_base (dt_uart_t dt, dt_uart_memory_t mem)
	Get the base address of a memory.

uint32_t	dt_uart_memory_size (dt_uart_t dt, dt_uart_memory_t mem)
	Get the size of a memory.

dt_plic_irq_id_t	dt_uart_irq_to_plic_id (dt_uart_t dt, dt_uart_irq_t irq)
	Get the PLIC ID of a uart IRQ for a given instance.

dt_uart_irq_t	dt_uart_irq_from_plic_id (dt_uart_t dt, dt_plic_irq_id_t irq)
	Convert a global IRQ ID to a local uart IRQ type.

dt_alert_id_t	dt_uart_alert_to_alert_id (dt_uart_t dt, dt_uart_alert_t alert)
	Get the alert ID of a uart alert for a given instance.

dt_uart_alert_t	dt_uart_alert_from_alert_id (dt_uart_t dt, dt_alert_id_t alert)
	Convert a global alert ID to a local uart alert type.

dt_periph_io_t	dt_uart_periph_io (dt_uart_t dt, dt_uart_periph_io_t sig)
	Get the peripheral I/O description of an instance.

dt_clock_t	dt_uart_clock (dt_uart_t dt, dt_uart_clock_t clk)
	Get the clock signal connected to a clock port of an instance.

dt_reset_t	dt_uart_reset (dt_uart_t dt, dt_uart_reset_t rst)
	Get the reset signal connected to a reset port of an instance.

Detailed Description

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

Definition in file dt_uart.c.

Data Structure Documentation

◆ dt_desc_uart

struct dt_desc_uart

Description of instances.

Definition at line 19 of file dt_uart.c.

Data Fields
dt_clock_t	clock[kDtUartClockCount]	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.
top_englishbreakfast_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	mem_addr[kDtUartMemoryCount]	Base address of each memory.
uint32_t	mem_size[kDtUartMemoryCount]	Size in bytes of each memory.
dt_periph_io_t	periph_io[kDtUartPeriphIoCount]	Description of each peripheral I/O.
uint32_t	reg_addr[kDtUartRegBlockCount]	Base address of each register block.
dt_reset_t	reset[kDtUartResetCount]	Reset signal connected to each reset port.

Macro Definition Documentation

◆ TRY_GET_DT

#define TRY_GET_DT	(		dt,
			default )

Value:

({ if ((dt) < (dt_uart_t)0 || (dt) >= kDtUartCount) return (default); &uart_desc[dt]; })

Return a pointer to the dt_uart_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 88 of file dt_uart.c.

Function Documentation

◆ dt_uart_alert_from_alert_id()

dt_uart_alert_t dt_uart_alert_from_alert_id	(	dt_uart_t	dt,
		dt_alert_id_t	alert )

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

Parameters

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

Returns: The uart alert, or kDtUartAlertCount.

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

Definition at line 154 of file dt_uart.c.

◆ dt_uart_alert_to_alert_id()

dt_alert_id_t dt_uart_alert_to_alert_id	(	dt_uart_t	dt,
		dt_uart_alert_t	alert )

Get the alert ID of a uart 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 uart.
alert	A uart alert.

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

Definition at line 148 of file dt_uart.c.

◆ dt_uart_clock()

dt_clock_t dt_uart_clock	(	dt_uart_t	dt,
		dt_uart_clock_t	clk )

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

Parameters

dt	Instance of uart.
clk	Clock port.

Returns: Clock signal.

Definition at line 172 of file dt_uart.c.

◆ dt_uart_from_instance_id()

dt_uart_t dt_uart_from_instance_id ( dt_instance_id_t inst_id )

Get the uart instance from an instance ID.

For example, dt_uart_from_instance_id(kDtInstanceIdUart3) == kDtUart3.

Parameters

inst_id Instance ID.

Returns: A uart instance.

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

Definition at line 90 of file dt_uart.c.

◆ dt_uart_instance_id()

dt_instance_id_t dt_uart_instance_id ( dt_uart_t dt )

Get the instance ID of an instance.

Parameters

dt	Instance of uart.

Returns: The instance ID of that instance.

Definition at line 97 of file dt_uart.c.

◆ dt_uart_irq_from_plic_id()

dt_uart_irq_t dt_uart_irq_from_plic_id	(	dt_uart_t	dt,
		dt_plic_irq_id_t	irq )

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

Parameters

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

Returns: The uart IRQ, or kDtUartIrqCount.

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

Definition at line 133 of file dt_uart.c.

◆ dt_uart_irq_to_plic_id()

dt_plic_irq_id_t dt_uart_irq_to_plic_id	(	dt_uart_t	dt,
		dt_uart_irq_t	irq )

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

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

Parameters

dt	Instance of uart.
irq	A uart IRQ.

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

Definition at line 123 of file dt_uart.c.

◆ dt_uart_memory_base()

uint32_t dt_uart_memory_base	(	dt_uart_t	dt,
		dt_uart_memory_t	mem )

Get the base address of a memory.

Parameters

dt	Instance of uart.
mem	The memory requested.

Returns: The base address of the requested memory.

Definition at line 109 of file dt_uart.c.

◆ dt_uart_memory_size()

uint32_t dt_uart_memory_size	(	dt_uart_t	dt,
		dt_uart_memory_t	mem )

Get the size of a memory.

Parameters

dt	Instance of uart.
mem	The memory requested.

Returns: The size of the requested memory.

Definition at line 116 of file dt_uart.c.

◆ dt_uart_periph_io()

dt_periph_io_t dt_uart_periph_io	(	dt_uart_t	dt,
		dt_uart_periph_io_t	sig )

Get the peripheral I/O description of an instance.

Parameters

dt	Instance of uart.
sig	Requested peripheral I/O.

Returns: Description of the requested peripheral I/O for this instance.

Definition at line 165 of file dt_uart.c.

◆ dt_uart_reg_block()

uint32_t dt_uart_reg_block	(	dt_uart_t	dt,
		dt_uart_reg_block_t	reg_block )

Get the register base address of an instance.

Parameters

dt	Instance of uart.
reg_block	The register block requested.

Returns: The register base address of the requested block.

Definition at line 102 of file dt_uart.c.

◆ dt_uart_reset()

dt_reset_t dt_uart_reset	(	dt_uart_t	dt,
		dt_uart_reset_t	rst )

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

Parameters

dt	Instance of uart.
rst	Reset port.

Returns: Reset signal.

Definition at line 179 of file dt_uart.c.

Data Structures

Macros

Typedefs

Functions

Detailed Description

Data Structure Documentation

◆ dt_desc_uart

Macro Definition Documentation

◆ TRY_GET_DT

Function Documentation

◆ dt_uart_alert_from_alert_id()

◆ dt_uart_alert_to_alert_id()

◆ dt_uart_clock()

◆ dt_uart_from_instance_id()

◆ dt_uart_instance_id()

◆ dt_uart_irq_from_plic_id()

◆ dt_uart_irq_to_plic_id()

◆ dt_uart_memory_base()

◆ dt_uart_memory_size()

◆ dt_uart_periph_io()

◆ dt_uart_reg_block()

◆ dt_uart_reset()