8390.c

/**
 * alloc_ei_netdev - alloc_etherdev counterpart for 8390
 * @size: extra bytes to allocate
 *
 * Allocate 8390-specific net_device.
 */
struct net_device *__alloc_ei_netdev(int size)
{
	return alloc_netdev(sizeof(struct ei_device) + size, "eth%d",
				ethdev_setup);
}




/* This page of functions should be 8390 generic */
/* Follow National Semi's recommendations for initializing the "NIC". */

/**
 * NS8390_init - initialize 8390 hardware
 * @dev: network device to initialize
 * @startp: boolean.  non-zero value to initiate chip processing
 *
 *	Must be called with lock held.
 */

void NS8390_init(struct net_device *dev, int startp)
{
	long e8390_base = dev->base_addr;
	struct ei_device *ei_local = (struct ei_device *) netdev_priv(dev);
	int i;
	int endcfg = ei_local->word16
	    ? (0x48 | ENDCFG_WTS | (ei_local->bigendian ? ENDCFG_BOS : 0))
	    : 0x48;

	if(sizeof(struct e8390_pkt_hdr)!=4)
    		panic("8390.c: header struct mispacked\n");
	/* Follow National Semi's recommendations for initing the DP83902. */
	outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD); /* 0x21 */
	outb_p(endcfg, e8390_base + EN0_DCFG);	/* 0x48 or 0x49 */
	/* Clear the remote byte count registers. */
	outb_p(0x00,  e8390_base + EN0_RCNTLO);
	outb_p(0x00,  e8390_base + EN0_RCNTHI);
	/* Set to monitor and loopback mode -- this is vital!. */
	outb_p(E8390_RXOFF, e8390_base + EN0_RXCR); /* 0x20 */
	outb_p(E8390_TXOFF, e8390_base + EN0_TXCR); /* 0x02 */
	/* Set the transmit page and receive ring. */
	outb_p(ei_local->tx_start_page, e8390_base + EN0_TPSR);
	ei_local->tx1 = ei_local->tx2 = 0;
	outb_p(ei_local->rx_start_page, e8390_base + EN0_STARTPG);
	outb_p(ei_local->stop_page-1, e8390_base + EN0_BOUNDARY);	/* 3c503 says 0x3f,NS0x26*/
	ei_local->current_page = ei_local->rx_start_page;		/* assert boundary+1 */
	outb_p(ei_local->stop_page, e8390_base + EN0_STOPPG);
	/* Clear the pending interrupts and mask. */
	outb_p(0xFF, e8390_base + EN0_ISR);
	outb_p(0x00,  e8390_base + EN0_IMR);

	/* Copy the station address into the DS8390 registers. */

	outb_p(E8390_NODMA + E8390_PAGE1 + E8390_STOP, e8390_base+E8390_CMD); /* 0x61 */
	for(i = 0; i < 6; i++)
	{
		outb_p(dev->dev_addr[i], e8390_base + EN1_PHYS_SHIFT(i));
		if (ei_debug > 1 && inb_p(e8390_base + EN1_PHYS_SHIFT(i))!=dev->dev_addr[i])
			printk(KERN_ERR "Hw. address read/write mismap %d\n",i);
	}

	outb_p(ei_local->rx_start_page, e8390_base + EN1_CURPAG);
	outb_p(E8390_NODMA+E8390_PAGE0+E8390_STOP, e8390_base+E8390_CMD);

	netif_start_queue(dev);
	ei_local->tx1 = ei_local->tx2 = 0;
	ei_local->txing = 0;

	if (startp)
	{
		outb_p(0xff,  e8390_base + EN0_ISR);
		outb_p(ENISR_ALL,  e8390_base + EN0_IMR);
		outb_p(E8390_NODMA+E8390_PAGE0+E8390_START, e8390_base+E8390_CMD);
		outb_p(E8390_TXCONFIG, e8390_base + EN0_TXCR); /* xmit on. */
		/* 3c503 TechMan says rxconfig only after the NIC is started. */
		outb_p(E8390_RXCONFIG, e8390_base + EN0_RXCR); /* rx on,  */
		do_set_multicast_list(dev);	/* (re)load the mcast table */
	}
}

/* Trigger a transmit start, assuming the length is valid.
   Always called with the page lock held */

static void NS8390_trigger_send(struct net_device *dev, unsigned int length,
								int start_page)
{
	long e8390_base = dev->base_addr;
 	struct ei_device *ei_local __attribute((unused)) = (struct ei_device *) netdev_priv(dev);

	outb_p(E8390_NODMA+E8390_PAGE0, e8390_base+E8390_CMD);

	if (inb_p(e8390_base + E8390_CMD) & E8390_TRANS)
	{
		printk(KERN_WARNING "%s: trigger_send() called with the transmitter busy.\n",
			dev->name);
		return;
	}
	outb_p(length & 0xff, e8390_base + EN0_TCNTLO);
	outb_p(length >> 8, e8390_base + EN0_TCNTHI);
	outb_p(start_page, e8390_base + EN0_TPSR);
	outb_p(E8390_NODMA+E8390_TRANS+E8390_START, e8390_base+E8390_CMD);
}

EXPORT_SYMBOL(ei_open);
EXPORT_SYMBOL(ei_close);
EXPORT_SYMBOL(ei_interrupt);
#ifdef CONFIG_NET_POLL_CONTROLLER
EXPORT_SYMBOL(ei_poll);
#endif
EXPORT_SYMBOL(NS8390_init);
EXPORT_SYMBOL(__alloc_ei_netdev);

#if defined(MODULE)

int init_module(void)
{
	return 0;
}

void cleanup_module(void)
{
}

#endif /* MODULE */
MODULE_LICENSE("GPL");