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/* ----------------------------------------------------------------------------
* ATMEL Microcontroller Software Support
* ----------------------------------------------------------------------------
* Copyright (c) 2008, Atmel Corporation
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the disclaimer below.
*
* Atmel's name may not be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
* DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* ----------------------------------------------------------------------------
*/
// peripherals/emac/emac.h
#ifndef EMAC_H
#define EMAC_H
//-----------------------------------------------------------------------------
/// \dir
/// !Purpose
///
/// Definition of methods and structures for using EMAC
///
/// !Usage
///
/// -# Initialize EMAC with EMAC_Init with MAC address.
/// -# Then the caller application need to initialize the PHY driver before further calling EMAC
/// driver.
/// -# Get a packet from network
/// -# Interrupt mode: EMAC_Set_RxCb to register a function to process the frame packet
/// -# Polling mode: EMAC_Poll for a data packet from network
/// -# Send a packet to network with EMAC_Send.
///
/// Please refer to the list of functions in the #Overview# tab of this unit
/// for more detailed information.
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// Headers
//-----------------------------------------------------------------------------
#include <board.h>
//-----------------------------------------------------------------------------
// Definitions
//-----------------------------------------------------------------------------
/// Board EMAC base address
#if !defined(AT91C_BASE_EMAC)
#if defined(AT91C_BASE_MACB)
#define AT91C_BASE_EMAC AT91C_BASE_MACB
#elif defined(AT91C_BASE_EMACB)
#define AT91C_BASE_EMAC AT91C_BASE_EMACB
#else
#error
#endif
#endif
/// Number of buffer for RX, be carreful: MUST be 2^n
#define RX_BUFFERS 16
/// Number of buffer for TX, be carreful: MUST be 2^n
#define TX_BUFFERS 8
/// Buffer Size
#define EMAC_RX_UNITSIZE 128 /// Fixed size for RX buffer
#define EMAC_TX_UNITSIZE 1518 /// Size for ETH frame length
// The MAC can support frame lengths up to 1536 bytes.
#define EMAC_FRAME_LENTGH_MAX 1536
//-----------------------------------------------------------------------------
// Types
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
/// Describes the statistics of the EMAC.
//-----------------------------------------------------------------------------
typedef struct _EmacStats {
// TX errors
unsigned int tx_packets; /// Total Number of packets sent
unsigned int tx_comp; /// Packet complete
unsigned int tx_errors; /// TX errors ( Retry Limit Exceed )
unsigned int collisions; /// Collision
unsigned int tx_exausts; /// Buffer exhausted
unsigned int tx_underruns; /// Under Run, not able to read from memory
// RX errors
unsigned int rx_packets; /// Total Number of packets RX
unsigned int rx_eof; /// No EOF error
unsigned int rx_ovrs; /// Over Run, not able to store to memory
unsigned int rx_bnas; /// Buffer is not available
} EmacStats, *PEmacStats;
//-----------------------------------------------------------------------------
// PHY Exported functions
//-----------------------------------------------------------------------------
extern unsigned char EMAC_SetMdcClock( unsigned int mck );
extern void EMAC_EnableMdio( void );
extern void EMAC_DisableMdio( void );
extern void EMAC_EnableMII( void );
extern void EMAC_EnableRMII( void );
extern unsigned char EMAC_ReadPhy(unsigned char PhyAddress,
unsigned char Address,
unsigned int *pValue,
unsigned int retry);
extern unsigned char EMAC_WritePhy(unsigned char PhyAddress,
unsigned char Address,
unsigned int Value,
unsigned int retry);
extern void EMAC_SetLinkSpeed(unsigned char speed,
unsigned char fullduplex);
//-----------------------------------------------------------------------------
// EMAC Exported functions
//-----------------------------------------------------------------------------
/// Callback used by send function
typedef void (*EMAC_TxCallback)(unsigned int status);
typedef void (*EMAC_RxCallback)(unsigned int status);
typedef void (*EMAC_WakeupCallback)(void);
extern void EMAC_Init( unsigned char id, const unsigned char *pMacAddress,
unsigned char enableCAF, unsigned char enableNBC );
#define EMAC_CAF_DISABLE 0
#define EMAC_CAF_ENABLE 1
#define EMAC_NBC_DISABLE 0
#define EMAC_NBC_ENABLE 1
extern void EMAC_Handler(void);
extern void EMAC_Reset(void);
extern unsigned char EMAC_Send(void *pBuffer,
unsigned int size,
EMAC_TxCallback fEMAC_TxCallback);
/// Return for EMAC_Send function
#define EMAC_TX_OK 0
#define EMAC_TX_BUFFER_BUSY 1
#define EMAC_TX_INVALID_PACKET 2
extern unsigned char EMAC_Poll(unsigned char *pFrame,
unsigned int frameSize,
unsigned int *pRcvSize);
/// Return for EMAC_Poll function
#define EMAC_RX_OK 0
#define EMAC_RX_NO_DATA 1
#define EMAC_RX_FRAME_SIZE_TOO_SMALL 2
extern void EMAC_GetStatistics(EmacStats *pStats, unsigned char reset);
#endif // #ifndef EMAC_H
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