ne2.h

来自「AMLOGIC DPF source code」· C头文件 代码 · 共 45 行

/*******************************************************************
 * 
 *  Copyright C 2004 by Amlogic, Inc. All Rights Reserved.
 *
 *  Description: Declarations for NE2000 compatible driver
 *
 * Created: Wed Oct 27 16:34:38 2004, Eric Knudstrup
 *
 *******************************************************************/

#ifndef NE2_H
#define NE2_H

#include <includes.h>
#include "lwip/opt.h"
#include <lwip/netif.h>

/* Number of TX buffers */
#define TX_BUFFER_COUNT 2

/* Number of pages to reserve for each TX buffer */
#define TX_BUFFER_N_PAGES 6

struct ne2_tx_buffer {
    u8_t start_page;
    u16_t length;
};

struct ne2_if {
    struct netif ne2_netif;
    sys_sem_t ne2_if_sem; /* Interrupt uses this to poke the interface task awake */
    OS_EVENT *ne2_if_mutex; /* Make sure only one task can access the chip at the same time */

    struct ne2_tx_buffer ne2_tx_buf[TX_BUFFER_COUNT];
    s8_t ne2_started;      /* Buffer currently being sent by the chip */

    volatile u8_t *ne2_base_address;
    u8_t ne2_tx_start_page;
    u8_t ne2_rx_start_page;
    u8_t ne2_stop_page;
    u8_t ne2_current_page; /* Current read page */
};

#endif