emac_device Struct Reference

#include <emac.h>

Public Attributes
Emac *	p_hw
uint8_t *	p_tx_buffer
uint8_t *	p_rx_buffer
emac_rx_descriptor_t *	p_rx_dscr
emac_tx_descriptor_t *	p_tx_dscr
emac_dev_tx_cb_t	func_rx_cb
emac_dev_wakeup_cb_t	func_wakeup_cb
emac_dev_tx_cb_t *	func_tx_cb_list
uint16_t	us_rx_list_size
uint16_t	us_rx_idx
uint16_t	us_tx_list_size
uint16_t	us_tx_head
uint16_t	us_tx_tail
uint8_t	uc_wakeup_threshold

Detailed Description

EMAC driver structure.

Member Data Documentation

emac_dev_tx_cb_t emac_device::func_rx_cb

Optional callback to be invoked once a frame has been received

emac_dev_tx_cb_t* emac_device::func_tx_cb_list

Optional callback list to be invoked once TD has been processed

emac_dev_wakeup_cb_t emac_device::func_wakeup_cb

Optional callback to be invoked once several TDs have been released

Emac* emac_device::p_hw

Pointer to HW register base

uint8_t* emac_device::p_rx_buffer

Pointer to allocated RX buffer

emac_rx_descriptor_t* emac_device::p_rx_dscr

Pointer to Rx TDs (must be 8-byte aligned)

uint8_t* emac_device::p_tx_buffer

Pointer to allocated TX buffer. Section 3.6 of AMBA 2.0 spec states that burst should not cross 1K Boundaries. Receive buffer manager writes are burst of 2 words => 3 lsb bits of the address shall be set to 0.

emac_tx_descriptor_t* emac_device::p_tx_dscr

Pointer to Tx TDs (must be 8-byte aligned)

uint8_t emac_device::uc_wakeup_threshold

Number of free TD before wakeup callback is invoked

uint16_t emac_device::us_rx_idx

RX index for current processing TD

uint16_t emac_device::us_rx_list_size

RX TD list size

uint16_t emac_device::us_tx_head

Circular buffer head pointer by upper layer (buffer to be sent)

uint16_t emac_device::us_tx_list_size

TX TD list size

uint16_t emac_device::us_tx_tail

Circular buffer tail pointer incremented by handlers (buffer sent)

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The documentation for this struct was generated from the following file:

• src/libsam/include/emac.h