Davicom公司DM9000A和DM9010 ISA NIC 以太网驱动分析

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#endif

#ifndef CONFIG_ARCH_MAINSTONE

#pragma pack(push, 1)

#endif

typedef struct _RX_DESC

{

u8 rxbyte;

u8 status;

u16 length;

}RX_DESC;

typedef union{

u8 buf[4];

RX_DESC desc;

} rx_t;

#ifndef CONFIG_ARCH_MAINSTONE

#pragma pack(pop)

#endif

enum DM9KS_PHY_mode {

DM9KS_10MHD = 0,

DM9KS_100MHD = 1,

DM9KS_10MFD = 4,

DM9KS_100MFD = 5,

DM9KS_AUTO = 8,

};

/* Structure/enum declaration ------------------------------- */

typedef struct board_info {

u32 reset_counter; /* counter: RESET */

u32 reset_tx_timeout; /* RESET caused by TX Timeout */

u32 io_addr; /* Register I/O base address */

u32 io_data; /* Data I/O address */

int tx_pkt_cnt;

u8 op_mode; /* PHY operation mode */

u8 io_mode; /* 0:word, 2:byte */

u8 device_wait_reset; /* device state */

u8 Speed; /* current speed */

int cont_rx_pkt_cnt;/* current number of continuos rx packets */

struct timer_list timer;

struct net_device_stats stats;

unsigned char srom[128];

spinlock_t lock;

} board_info_t;

/* Global variable declaration ----------------------------- */

/*static int dmfe_debug = 0;*/

static struct net_device * dmfe_dev = NULL;

/* For module input parameter */

static int mode = DM9KS_AUTO;

static int media_mode = DM9KS_AUTO;

static u8 irq = DM9K_IRQ;

static u32 iobase = DM9KS_MIN_IO;

/* function declaration ------------------------------------- */

int dmfe_probe(struct net_device *);

static int dmfe_open(struct net_device *);

static int dmfe_start_xmit(struct sk_buff *, struct net_device *);

static void dmfe_tx_done(unsigned long);

static void dmfe_packet_receive(struct net_device *);

static int dmfe_stop(struct net_device *);

static struct net_device_stats * dmfe_get_stats(struct net_device *);

static int dmfe_do_ioctl(struct net_device *, struct ifreq *, int);

#if LINUX_VERSION_CODE KERNEL_VERSION(2,5,0)

static void dmfe_interrupt(int , void *, struct pt_regs *);

#else

static irqreturn_t dmfe_interrupt(int , void *, struct pt_regs *);

#endif

static void dmfe_timer(unsigned long);

static void dmfe_init_dm9000(struct net_device *);

static unsigned long cal_CRC(unsigned char *, unsigned int, u8);

static u8 ior(board_info_t *, int);

static void iow(board_info_t *, int, u8);

static u16 phy_read(board_info_t *, int);

static void phy_write(board_info_t *, int, u16);

static u16 read_srom_word(board_info_t *, int);

static void dm9000_hash_table(struct net_device *);

static void dmfe_timeout(struct net_device *);

static void dmfe_reset(struct net_device *);

#if defined(CHECKSUM)

static u8 check_rx_ready(u8);

#endif

//DECLARE_TASKLET(dmfe_tx_tasklet,dmfe_tx_done,0);

/* DM9000 network baord routine ---------------------------- */

/*

Search DM9000 board, allocate space and register it

*/

struct net_device * __init dmfe_probe1(void)

{

struct net_device *dev;

int err;

#if LINUX_VERSION_CODE KERNEL_VERSION(2,5,0)

dev = init_etherdev(NULL, sizeof(struct board_info));

ether_setup(dev);

#else

dev= alloc_etherdev(sizeof(struct board_info));

#endif

if(!dev)

return ERR_PTR(-ENOMEM);

SET_MODULE_OWNER(dev);

err = dmfe_probe(dev);

if (err)

goto out;

#if LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)

err = register_netdev(dev);

if (err)

goto out1;

#endif

return dev;

out1:

release_region(dev->base_addr,2);

out:

#if LINUX_VERSION_CODE KERNEL_VERSION(2,5,0)

kfree(dev);

#else

free_netdev(dev);

#endif

return ERR_PTR(err);

}

int __init dmfe_probe(struct net_device *dev)

{

struct board_info *db; /* Point a board information structure */

u32 id_val;

u16 i, dm9000_found = FALSE;

DMFE_DBUG(0, dmfe_probe(),0);

/* Search All DM9000 serial NIC */

do {

outb(DM9KS_VID_L, iobase);

id_val = inb(iobase + 4);

outb(DM9KS_VID_H, iobase);

id_val |= inb(iobase + 4) 8;

outb(DM9KS_PID_L, iobase);

id_val |= inb(iobase + 4) 16;

out