emac.c File Reference

EMAC (Ethernet MAC) driver for SAM.

Copyright (c) 2011-2018 Microchip Technology Inc. and its subsidiaries.

#include "compiler.h"
#include "emac.h"
#include <string.h>

Data Structures
struct	emac_dev_mem
	EMAC device memory management struct. More...

Macros
#define	CIRC_CLEAR(head, tail)   (head = tail = 0)
	Clear circular buffer. More...
#define	CIRC_CNT(head, tail, size)   (((head) - (tail)) % (size))
	Return count in buffer. More...
#define	CIRC_EMPTY(head, tail)   (head == tail)
	Circular buffer is empty ? More...
#define	CIRC_SPACE(head, tail, size)   CIRC_CNT((tail),((head)+1),(size))

Typedefs
typedef struct emac_dev_mem	emac_dev_mem_t
	EMAC device memory management struct. More...

Functions
static void	circ_inc (uint16_t *headortail, uint32_t size)
	Increment head or tail. More...
uint32_t	emac_dev_get_tx_load (emac_device_t *p_emac_dev)
	Get current load of transmit. More...
void	emac_dev_init (Emac *p_emac, emac_device_t *p_emac_dev, emac_options_t *p_opt)
	Initialize the EMAC driver. More...
uint32_t	emac_dev_read (emac_device_t *p_emac_dev, uint8_t *p_frame, uint32_t ul_frame_size, uint32_t *p_rcv_size)
	Frames can be read from the EMAC in multiple sections. More...
void	emac_dev_reset (emac_device_t *p_emac_dev)
	Reset TX & RX queue & statistics. More...
void	emac_dev_set_rx_callback (emac_device_t *p_emac_dev, emac_dev_tx_cb_t func_rx_cb)
	Register/Clear RX callback. More...
uint8_t	emac_dev_set_tx_wakeup_callback (emac_device_t *p_emac_dev, emac_dev_wakeup_cb_t func_wakeup_cb, uint8_t uc_threshold)
	Register/Clear TX wakeup callback. More...
uint32_t	emac_dev_write (emac_device_t *p_emac_dev, void *p_buffer, uint32_t ul_size, emac_dev_tx_cb_t func_tx_cb)
	Send ulLength bytes from pcFrom. More...
void	emac_handler (emac_device_t *p_emac_dev)
	EMAC Interrupt handler. More...
static uint8_t	emac_init_mem (Emac *p_emac, emac_device_t *p_emac_dev, emac_dev_mem_t *p_dev_mm, emac_dev_tx_cb_t *p_tx_cb)
	Initialize the allocated buffer lists for EMAC driver to transfer data. More...
uint8_t	emac_phy_read (Emac *p_emac, uint8_t uc_phy_address, uint8_t uc_address, uint32_t *p_value)
	Read the PHY register. More...
uint8_t	emac_phy_write (Emac *p_emac, uint8_t uc_phy_address, uint8_t uc_address, uint32_t ul_value)
	Write the PHY register. More...
static void	emac_reset_rx_mem (emac_device_t *p_dev)
	Disable receiver, reset registers and descriptor list. More...
static void	emac_reset_tx_mem (emac_device_t *p_dev)
	Disable transfer, reset registers and descriptor lists. More...
static uint8_t	emac_wait_phy (Emac *p_emac, const uint32_t ul_retry)
	Wait PHY operation to be completed. More...

Variables
static emac_rx_descriptor_t	gs_rx_desc [EMAC_RX_BUFFERS]
	RX descriptors lists. More...
static emac_dev_tx_cb_t	gs_tx_callback [EMAC_TX_BUFFERS]
	TX callback lists. More...
static emac_tx_descriptor_t	gs_tx_desc [EMAC_TX_BUFFERS]
	TX descriptor lists. More...
static uint8_t	gs_uc_rx_buffer [EMAC_RX_BUFFERS *EMAC_RX_UNITSIZE]
	Receive Buffer. More...
static uint8_t	gs_uc_tx_buffer [EMAC_TX_BUFFERS *EMAC_TX_UNITSIZE]
	Send Buffer. More...