Detailed Description

Interface for Ethernet functions.

Summary

The Ethernet interface provides Ethernet functionality. The Ethernet interface supports the following features:

Transmit/receive processing (Blocking and Non-Blocking)
Callback function with returned event code
Magic packet detection mode support
Auto negotiation support
Flow control support
Multicast filtering support

Data Structures
struct	ether_callback_args_t

struct	ether_cfg_t

struct	ether_api_t

struct	ether_instance_t

Typedefs
typedef void	ether_ctrl_t

Enumerations
enum	ether_wake_on_lan_t

enum	ether_flow_control_t

enum	ether_multicast_t

enum	ether_promiscuous_t

enum	ether_zerocopy_t

enum	ether_event_t

Data Structure Documentation

◆ ether_callback_args_t

struct ether_callback_args_t

Callback function parameter data

Data Fields
uint32_t	channel	Device channel number.
ether_event_t	event	Event code.
uint32_t	status_ecsr	ETHERC status register for interrupt handler.
uint32_t	status_eesr	ETHERC/EDMAC status register for interrupt handler.
void const *	p_context	Placeholder for user data. Set in ether_api_t::open function in ether_cfg_t.

◆ ether_cfg_t

struct ether_cfg_t

Configuration parameters.

Data Fields
uint8_t	channel
	Channel.

ether_zerocopy_t	zerocopy
	Zero copy enable or disable in Read/Write function.

ether_multicast_t	multicast
	Multicast enable or disable.

ether_promiscuous_t	promiscuous
	Promiscuous mode enable or disable.

ether_flow_control_t	flow_control
	Flow control functionally enable or disable.

ether_padding_t	padding
	Padding length inserted into the received Ethernet frame.

uint32_t	padding_offset
	Offset of the padding inserted into the received Ethernet frame.

uint32_t	broadcast_filter
	Limit of the number of broadcast frames received continuously.

uint8_t *	p_mac_address
	Pointer of MAC address.

uint8_t	num_tx_descriptors
	Number of transmission descriptor.

uint8_t	num_rx_descriptors
	Number of receive descriptor.

uint8_t **	pp_ether_buffers
	Transmit and receive buffer.

uint32_t	ether_buffer_size
	Size of transmit and receive buffer.

IRQn_Type	irq
	Interrupt number.

uint32_t	interrupt_priority
	Interrupt priority.

void(*	p_callback )(ether_callback_args_t *p_args)
	Callback provided when an ISR occurs.

ether_phy_instance_t const *	p_ether_phy_instance
	Pointer to ETHER_PHY instance.

void const *	p_context
	Placeholder for user data. More...

void const *	p_extend
	Placeholder for user extension.

Field Documentation

◆ p_context

void const* ether_cfg_t::p_context

Placeholder for user data.

Placeholder for user data. Passed to the user callback in ether_callback_args_t.

◆ ether_api_t

struct ether_api_t

Functions implemented at the HAL layer will follow this API.

Data Fields
fsp_err_t(*	open )(ether_ctrl_t const p_ctrl, ether_cfg_t const const p_cfg)

fsp_err_t(*	close )(ether_ctrl_t *const p_ctrl)

fsp_err_t(*	read )(ether_ctrl_t const p_ctrl, void const p_buffer, uint32_t *const length_bytes)

fsp_err_t(*	bufferRelease )(ether_ctrl_t *const p_ctrl)

fsp_err_t(*	rxBufferUpdate )(ether_ctrl_t const p_ctrl, void const p_buffer)

fsp_err_t(*	write )(ether_ctrl_t const p_ctrl, void const p_buffer, uint32_t const frame_length)

fsp_err_t(*	linkProcess )(ether_ctrl_t *const p_ctrl)

fsp_err_t(*	wakeOnLANEnable )(ether_ctrl_t *const p_ctrl)

fsp_err_t(*	txStatusGet )(ether_ctrl_t const p_ctrl, void const p_buffer_address)

fsp_err_t(*	callbackSet )(ether_ctrl_t const p_ctrl, void(p_callback)(ether_callback_args_t ), void const const p_context, ether_callback_args_t *const p_callback_memory)

Field Documentation

◆ open

fsp_err_t(* ether_api_t::open) (ether_ctrl_t *const p_ctrl, ether_cfg_t const *const p_cfg)

Open driver.

Parameters

[in]	p_ctrl	Pointer to control structure.
[in]	p_cfg	Pointer to pin configuration structure.

◆ close

fsp_err_t(* ether_api_t::close) (ether_ctrl_t *const p_ctrl)

Close driver.

Parameters

[in] p_ctrl Pointer to control structure.

◆ read

fsp_err_t(* ether_api_t::read) (ether_ctrl_t *const p_ctrl, void *const p_buffer, uint32_t *const length_bytes)

Read packet if data is available.

Parameters

[in]	p_ctrl	Pointer to control structure.
[in]	p_buffer	Pointer to where to store read data.
[in]	length_bytes	Number of bytes in buffer

◆ bufferRelease

fsp_err_t(* ether_api_t::bufferRelease) (ether_ctrl_t *const p_ctrl)

Release rx buffer from buffer pool process in zero-copy read operation.

Parameters

[in] p_ctrl Pointer to control structure.

◆ rxBufferUpdate

fsp_err_t(* ether_api_t::rxBufferUpdate) (ether_ctrl_t *const p_ctrl, void *const p_buffer)

Update the buffer pointer in the current receive descriptor.

Parameters

[in]	p_ctrl	Pointer to control structure.
[in]	p_buffer	New address to write into the rx buffer descriptor.

◆ write

fsp_err_t(* ether_api_t::write) (ether_ctrl_t *const p_ctrl, void *const p_buffer, uint32_t const frame_length)

Write packet.

Parameters

[in]	p_ctrl	Pointer to control structure.
[in]	p_buffer	Pointer to data to write.
[in]	frame_length	Send ethernet frame size (without 4 bytes of CRC data size).

◆ linkProcess

fsp_err_t(* ether_api_t::linkProcess) (ether_ctrl_t *const p_ctrl)

Process link.

Parameters

[in] p_ctrl Pointer to control structure.

◆ wakeOnLANEnable

fsp_err_t(* ether_api_t::wakeOnLANEnable) (ether_ctrl_t *const p_ctrl)

Enable magic packet detection.

Parameters

[in] p_ctrl Pointer to control structure.

◆ txStatusGet

fsp_err_t(* ether_api_t::txStatusGet) (ether_ctrl_t *const p_ctrl, void *const p_buffer_address)

Get the address of the most recently sent buffer.

Parameters

[in]	p_ctrl	Pointer to control structure.
[out]	p_buffer_address	Pointer to the address of the most recently sent buffer.

◆ callbackSet

fsp_err_t(* ether_api_t::callbackSet) (ether_ctrl_t *const p_ctrl, void(*p_callback)(ether_callback_args_t *), void const *const p_context, ether_callback_args_t *const p_callback_memory)

Specify callback function and optional context pointer and working memory pointer.

Parameters

[in]	p_ctrl	Pointer to the ETHER control block.
[in]	p_callback	Callback function
[in]	p_context	Pointer to send to callback function
[in]	p_working_memory	Pointer to volatile memory where callback structure can be allocated. Callback arguments allocated here are only valid during the callback.

◆ ether_instance_t

struct ether_instance_t

This structure encompasses everything that is needed to use an instance of this interface.

Data Fields
ether_ctrl_t *	p_ctrl	Pointer to the control structure for this instance.
ether_cfg_t const *	p_cfg	Pointer to the configuration structure for this instance.
ether_api_t const *	p_api	Pointer to the API structure for this instance.

Typedef Documentation

◆ ether_ctrl_t

typedef void ether_ctrl_t

Control block. Allocate an instance specific control block to pass into the API calls.

Enumeration Type Documentation

◆ ether_wake_on_lan_t

enum ether_wake_on_lan_t

Wake on LAN

Enumerator
ETHER_WAKE_ON_LAN_DISABLE	Disable Wake on LAN.
ETHER_WAKE_ON_LAN_ENABLE	Enable Wake on LAN.

◆ ether_flow_control_t

enum ether_flow_control_t

Flow control functionality

Enumerator
ETHER_FLOW_CONTROL_DISABLE	Disable flow control functionality.
ETHER_FLOW_CONTROL_ENABLE	Enable flow control functionality with pause frames.

◆ ether_multicast_t

enum ether_multicast_t

Multicast Filter

Enumerator
ETHER_MULTICAST_DISABLE	Disable reception of multicast frames.
ETHER_MULTICAST_ENABLE	Enable reception of multicast frames.

◆ ether_promiscuous_t

enum ether_promiscuous_t

Promiscuous Mode

Enumerator
ETHER_PROMISCUOUS_DISABLE	Only receive packets with current MAC address, multicast, and broadcast.
ETHER_PROMISCUOUS_ENABLE	Receive all packets.

◆ ether_zerocopy_t

enum ether_zerocopy_t

Zero copy

Enumerator
ETHER_ZEROCOPY_DISABLE	Disable zero copy in Read/Write function.
ETHER_ZEROCOPY_ENABLE	Enable zero copy in Read/Write function.

◆ ether_event_t

enum ether_event_t

Event code of callback function

Enumerator
ETHER_EVENT_WAKEON_LAN	Magic packet detection event.
ETHER_EVENT_LINK_ON	Link up detection event.
ETHER_EVENT_LINK_OFF	Link down detection event.
ETHER_EVENT_INTERRUPT	Interrupt event.

Detailed Description

Summary

Data Structures

Typedefs

Enumerations

Data Structure Documentation

◆ ether_callback_args_t

◆ ether_cfg_t

Data Fields

Field Documentation

◆ p_context

◆ ether_api_t

Data Fields

Field Documentation

◆ open

◆ close

◆ read

◆ bufferRelease

◆ rxBufferUpdate

◆ write

◆ linkProcess

◆ wakeOnLANEnable

◆ txStatusGet

◆ callbackSet

◆ ether_instance_t

Typedef Documentation

◆ ether_ctrl_t

Enumeration Type Documentation

◆ ether_wake_on_lan_t

◆ ether_flow_control_t

◆ ether_multicast_t

◆ ether_promiscuous_t

◆ ether_zerocopy_t

◆ ether_event_t