Linux????????????????????????+??·??

???????????? ???????[ 2012/12/25 10:21:35 ] ????????

???????????￡?

static int ne_probe1(struct device *dev?? int ioaddr)
{
.....................//???????
/* Fixup for users that don't know that IRQ 2 is really IRQ 9??
    or don't know which one to set. */
dev->irq = 9;//?????ж??????

    /* Snarf the interrupt now. There's no point in waiting since we cannot
       share and the board will usually be enabled. */
    {
int irqval = request_irq (dev->irq?? ei_interrupt?? 0?? wordlength==2 ? "ne2000":"ne1000");//????????ж???ж????????ei_interrupt
if (irqval) {
     printk (" unable to get IRQ %d (irqval=%d). "?? dev->irq?? irqval);
     return EAGAIN;
}
    }

dev->base_addr = ioaddr;

request_region(ioaddr?? NE_IO_EXTENT?? wordlength==2 ? "ne2000":"ne1000");//?????????

for(i = 0; i < ETHER_ADDR_LEN; i++)
dev->dev_addr[i] = SA_prom[i];

    ethdev_init(dev);//???ú?????dev?豸??????г????
    printk(" %s: %s found at %#x?? using IRQ %d. "??
    dev->name?? name?? ioaddr?? dev->irq);

if (ei_debug > 0)
printk(version);

    ei_status.name = name;
    ei_status.tx_start_page = start_page;
    ei_status.stop_page = stop_page;
    ei_status.word16 = (wordlength == 2);

    ei_status.rx_start_page = start_page + TX_PAGES;
#ifdef PACKETBUF_MEMSIZE
    /* Allow the packet buffer size to be overridden by know-it-alls. */
    ei_status.stop_page = ei_status.tx_start_page + PACKETBUF_MEMSIZE;
#endif

    ei_status.reset_8390 = &ne_reset_8390;
    ei_status.block_input = &ne_block_input;
    ei_status.block_output = &ne_block_output;
    NS8390_init(dev?? 0);//?????????е?????????????
    return 0;
}

?????????????ethdev_init()?????drivers/net/8390.c?С????￡?

/* Initialize the rest of the 8390 device structure. */
int ethdev_init(struct device *dev)
{
    if (ei_debug > 1)
printk(version);

    if (dev->priv == NULL) {//??????п??洢????????????????
struct ei_device *ei_local;//8390?????豸?????

dev->priv = kmalloc(sizeof(struct ei_device)?? GFP_KERNEL);//????????????
memset(dev->priv?? 0?? sizeof(struct ei_device));
ei_local = (struct ei_device *)dev->priv;
#ifndef NO_PINGPONG
ei_local->pingpong = 1;
#endif
    }

    /* The open call may be overridden by the card-specific code. */
    if (dev->open == NULL)
dev->open = &ei_open;//?豸???????
    /* We should have a dev->stop entry also. */
    dev->hard_start_xmit = &ei_start_xmit;//?豸????????????????8390.c??
    dev->get_stats = get_stats;
#ifdef HAVE_MULTICAST
    dev->set_multicast_list = &set_multicast_list;
#endif