3c501.h

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/*
 *  Index to functions.
 */

static int  el1_probe1(struct net_device *dev, int ioaddr);
static int  el_open(struct net_device *dev);
static void el_timeout(struct net_device *dev);
static netdev_tx_t el_start_xmit(struct sk_buff *skb, struct net_device *dev);
static irqreturn_t el_interrupt(int irq, void *dev_id);
static void el_receive(struct net_device *dev);
static void el_reset(struct net_device *dev);
static int  el1_close(struct net_device *dev);
static void set_multicast_list(struct net_device *dev);
static const struct ethtool_ops netdev_ethtool_ops;

#define EL1_IO_EXTENT   16

#ifndef EL_DEBUG
#define EL_DEBUG  0 /* use 0 for production, 1 for devel., >2 for debug */
#endif          /* Anything above 5 is wordy death! */
#define debug el_debug
static int el_debug = EL_DEBUG;

/*
 *  Board-specific info in netdev_priv(dev).
 */

struct net_local
{
    int     tx_pkt_start;   /* The length of the current Tx packet. */
    int     collisions; /* Tx collisions this packet */
    int     loading;    /* Spot buffer load collisions */
    int     txing;      /* True if card is in TX mode */
    spinlock_t  lock;       /* Serializing lock */
};


#define RX_STATUS (ioaddr + 0x06)
#define RX_CMD    RX_STATUS
#define TX_STATUS (ioaddr + 0x07)
#define TX_CMD    TX_STATUS
#define GP_LOW    (ioaddr + 0x08)
#define GP_HIGH   (ioaddr + 0x09)
#define RX_BUF_CLR (ioaddr + 0x0A)
#define RX_LOW    (ioaddr + 0x0A)
#define RX_HIGH   (ioaddr + 0x0B)
#define SAPROM    (ioaddr + 0x0C)
#define AX_STATUS (ioaddr + 0x0E)
#define AX_CMD    AX_STATUS
#define DATAPORT  (ioaddr + 0x0F)
#define TX_RDY 0x08     /* In TX_STATUS */

#define EL1_DATAPTR 0x08
#define EL1_RXPTR   0x0A
#define EL1_SAPROM  0x0C
#define EL1_DATAPORT    0x0f

/*
 *  Writes to the ax command register.
 */

#define AX_OFF  0x00            /* Irq off, buffer access on */
#define AX_SYS  0x40            /* Load the buffer */
#define AX_XMIT 0x44            /* Transmit a packet */
#define AX_RX   0x48            /* Receive a packet */
#define AX_LOOP 0x0C            /* Loopback mode */
#define AX_RESET 0x80

/*
 *  Normal receive mode written to RX_STATUS.  We must intr on short packets
 *  to avoid bogus rx lockups.
 */

#define RX_NORM 0xA8        /* 0x68 == all addrs, 0xA8 only to me. */
#define RX_PROM 0x68        /* Senior Prom, uhmm promiscuous mode. */
#define RX_MULT 0xE8        /* Accept multicast packets. */
#define TX_NORM 0x0A        /* Interrupt on everything that might hang the chip */

/*
 *  TX_STATUS register.
 */

#define TX_COLLISION 0x02
#define TX_16COLLISIONS 0x04
#define TX_READY 0x08

#define RX_RUNT 0x08
#define RX_MISSED 0x01      /* Missed a packet due to 3c501 braindamage. */
#define RX_GOOD 0x30        /* Good packet 0x20, or simple overflow 0x10. */