3c59x.c

linux和2410结合开发 用他可以生成2410所需的zImage文件

	if (vp->cb_fn_base) {
		unsigned short n = inw(ioaddr + Wn2_ResetOptions) & ~0x4010;
		if (vp->drv_flags & INVERT_LED_PWR)
			n |= 0x10;
		if (vp->drv_flags & INVERT_MII_PWR)
			n |= 0x4000;
		outw(n, ioaddr + Wn2_ResetOptions);
	}

	if (dev->if_port == XCVR_10base2)
		/* Start the thinnet transceiver. We should really wait 50ms...*/
		outw(StartCoax, ioaddr + EL3_CMD);
	if (dev->if_port != XCVR_NWAY) {
		EL3WINDOW(4);
		outw((inw(ioaddr + Wn4_Media) & ~(Media_10TP|Media_SQE)) |
			 media_tbl[dev->if_port].media_bits, ioaddr + Wn4_Media);
	}

	/* Switch to the stats window, and clear all stats by reading. */
	outw(StatsDisable, ioaddr + EL3_CMD);
	EL3WINDOW(6);
	for (i = 0; i < 10; i++)
		inb(ioaddr + i);
	inw(ioaddr + 10);
	inw(ioaddr + 12);
	/* New: On the Vortex we must also clear the BadSSD counter. */
	EL3WINDOW(4);
	inb(ioaddr + 12);
	/* ..and on the Boomerang we enable the extra statistics bits. */
	outw(0x0040, ioaddr + Wn4_NetDiag);

	/* Switch to register set 7 for normal use. */
	EL3WINDOW(7);

	if (vp->full_bus_master_rx) { /* Boomerang bus master. */
		vp->cur_rx = vp->dirty_rx = 0;
		/* Initialize the RxEarly register as recommended. */
		outw(SetRxThreshold + (1536>>2), ioaddr + EL3_CMD);
		outl(0x0020, ioaddr + PktStatus);
		outl(vp->rx_ring_dma, ioaddr + UpListPtr);
	}
	if (vp->full_bus_master_tx) { 		/* Boomerang bus master Tx. */
		vp->cur_tx = vp->dirty_tx = 0;
		if (vp->drv_flags & IS_BOOMERANG)
			outb(PKT_BUF_SZ>>8, ioaddr + TxFreeThreshold); /* Room for a packet. */
		/* Clear the Rx, Tx rings. */
		for (i = 0; i < RX_RING_SIZE; i++)	/* AKPM: this is done in vortex_open, too */
			vp->rx_ring[i].status = 0;
		for (i = 0; i < TX_RING_SIZE; i++)
			vp->tx_skbuff[i] = 0;
		outl(0, ioaddr + DownListPtr);
	}
	/* Set receiver mode: presumably accept b-case and phys addr only. */
	set_rx_mode(dev);
	outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */

//	issue_and_wait(dev, SetTxStart|0x07ff);
	outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */
	outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */
	/* Allow status bits to be seen. */
	vp->status_enable = SetStatusEnb | HostError|IntReq|StatsFull|TxComplete|
		(vp->full_bus_master_tx ? DownComplete : TxAvailable) |
		(vp->full_bus_master_rx ? UpComplete : RxComplete) |
		(vp->bus_master ? DMADone : 0);
	vp->intr_enable = SetIntrEnb | IntLatch | TxAvailable |
		(vp->full_bus_master_rx ? 0 : RxComplete) |
		StatsFull | HostError | TxComplete | IntReq
		| (vp->bus_master ? DMADone : 0) | UpComplete | DownComplete;
	outw(vp->status_enable, ioaddr + EL3_CMD);
	/* Ack all pending events, and set active indicator mask. */
	outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq,
		 ioaddr + EL3_CMD);
	outw(vp->intr_enable, ioaddr + EL3_CMD);
	if (vp->cb_fn_base)			/* The PCMCIA people are idiots.  */
		writel(0x8000, vp->cb_fn_base + 4);
	netif_start_queue (dev);
}

static int
vortex_open(struct net_device *dev)
{
	struct vortex_private *vp = (struct vortex_private *)dev->priv;
	int i;
	int retval;

	/* Use the now-standard shared IRQ implementation. */
	if ((retval = request_irq(dev->irq, vp->full_bus_master_rx ?
				&boomerang_interrupt : &vortex_interrupt, SA_SHIRQ, dev->name, dev))) {
		printk(KERN_ERR "%s: Could not reserve IRQ %d\n", dev->name, dev->irq);
		goto out;
	}

	if (vp->full_bus_master_rx) { /* Boomerang bus master. */
		if (vortex_debug > 2)
			printk(KERN_DEBUG "%s:  Filling in the Rx ring.\n", dev->name);
		for (i = 0; i < RX_RING_SIZE; i++) {
			struct sk_buff *skb;
			vp->rx_ring[i].next = cpu_to_le32(vp->rx_ring_dma + sizeof(struct boom_rx_desc) * (i+1));
			vp->rx_ring[i].status = 0;	/* Clear complete bit. */
			vp->rx_ring[i].length = cpu_to_le32(PKT_BUF_SZ | LAST_FRAG);
			skb = dev_alloc_skb(PKT_BUF_SZ);
			vp->rx_skbuff[i] = skb;
			if (skb == NULL)
				break;			/* Bad news!  */
			skb->dev = dev;			/* Mark as being used by this device. */
			skb_reserve(skb, 2);	/* Align IP on 16 byte boundaries */
			vp->rx_ring[i].addr = cpu_to_le32(pci_map_single(vp->pdev, skb->tail, PKT_BUF_SZ, PCI_DMA_FROMDEVICE));
		}
		if (i != RX_RING_SIZE) {
			int j;
			printk(KERN_EMERG "%s: no memory for rx ring\n", dev->name);
			for (j = 0; j < i; j++) {
				if (vp->rx_skbuff[j]) {
					dev_kfree_skb(vp->rx_skbuff[j]);
					vp->rx_skbuff[j] = 0;
				}
			}
			retval = -ENOMEM;
			goto out_free_irq;
		}
		/* Wrap the ring. */
		vp->rx_ring[i-1].next = cpu_to_le32(vp->rx_ring_dma);
	}

	vortex_up(dev);
	return 0;

out_free_irq:
	free_irq(dev->irq, dev);
out:
	if (vortex_debug > 1)
		printk(KERN_ERR "%s: vortex_open() fails: returning %d\n", dev->name, retval);
	return retval;
}

static void
vortex_timer(unsigned long data)
{
	struct net_device *dev = (struct net_device *)data;
	struct vortex_private *vp = (struct vortex_private *)dev->priv;
	long ioaddr = dev->base_addr;
	int next_tick = 60*HZ;
	int ok = 0;
	int media_status, mii_status, old_window;

	if (vortex_debug > 2) {
		printk(KERN_DEBUG "%s: Media selection timer tick happened, %s.\n",
			   dev->name, media_tbl[dev->if_port].name);
		printk(KERN_DEBUG "dev->watchdog_timeo=%d\n", dev->watchdog_timeo);
	}

	if (vp->medialock)
		goto leave_media_alone;
	disable_irq(dev->irq);
	old_window = inw(ioaddr + EL3_CMD) >> 13;
	EL3WINDOW(4);
	media_status = inw(ioaddr + Wn4_Media);
	switch (dev->if_port) {
	case XCVR_10baseT:  case XCVR_100baseTx:  case XCVR_100baseFx:
		if (media_status & Media_LnkBeat) {
			ok = 1;
			if (vortex_debug > 1)
				printk(KERN_DEBUG "%s: Media %s has link beat, %x.\n",
					   dev->name, media_tbl[dev->if_port].name, media_status);
		} else if (vortex_debug > 1)
			printk(KERN_DEBUG "%s: Media %s has no link beat, %x.\n",
				   dev->name, media_tbl[dev->if_port].name, media_status);
		break;
	case XCVR_MII: case XCVR_NWAY:
		{
			mii_status = mdio_read(dev, vp->phys[0], 1);
			ok = 1;
			if (vortex_debug > 2)
				printk(KERN_DEBUG "%s: MII transceiver has status %4.4x.\n",
					dev->name, mii_status);
			if (mii_status & 0x0004) {
				int mii_reg5 = mdio_read(dev, vp->phys[0], 5);
				if (! vp->force_fd  &&  mii_reg5 != 0xffff) {
					int duplex = (mii_reg5&0x0100) ||
						(mii_reg5 & 0x01C0) == 0x0040;
					if (vp->full_duplex != duplex) {
						vp->full_duplex = duplex;
						printk(KERN_INFO "%s: Setting %s-duplex based on MII "
							"#%d link partner capability of %4.4x.\n",
							dev->name, vp->full_duplex ? "full" : "half",
							vp->phys[0], mii_reg5);
						/* Set the full-duplex bit. */
						EL3WINDOW(3);
						outw(	(vp->full_duplex ? 0x20 : 0) |
								(dev->mtu > 1500 ? 0x40 : 0) |
								((vp->full_duplex && vp->flow_ctrl && vp->partner_flow_ctrl) ? 0x100 : 0),
								ioaddr + Wn3_MAC_Ctrl);
						if (vortex_debug > 1)
							printk(KERN_DEBUG "Setting duplex in Wn3_MAC_Ctrl\n");
						/* AKPM: bug: should reset Tx and Rx after setting Duplex.  Page 180 */
					}
				}
			}
		}
		break;
	  default:					/* Other media types handled by Tx timeouts. */
		if (vortex_debug > 1)
		  printk(KERN_DEBUG "%s: Media %s has no indication, %x.\n",
				 dev->name, media_tbl[dev->if_port].name, media_status);
		ok = 1;
	}
	if ( ! ok) {
		unsigned int config;

		do {
			dev->if_port = media_tbl[dev->if_port].next;
		} while ( ! (vp->available_media & media_tbl[dev->if_port].mask));
		if (dev->if_port == XCVR_Default) { /* Go back to default. */
		  dev->if_port = vp->default_media;
		  if (vortex_debug > 1)
			printk(KERN_DEBUG "%s: Media selection failing, using default "
				   "%s port.\n",
				   dev->name, media_tbl[dev->if_port].name);
		} else {
			if (vortex_debug > 1)
				printk(KERN_DEBUG "%s: Media selection failed, now trying "
					   "%s port.\n",
					   dev->name, media_tbl[dev->if_port].name);
			next_tick = media_tbl[dev->if_port].wait;
		}
		outw((media_status & ~(Media_10TP|Media_SQE)) |
			 media_tbl[dev->if_port].media_bits, ioaddr + Wn4_Media);

		EL3WINDOW(3);
		config = inl(ioaddr + Wn3_Config);
		config = BFINS(config, dev->if_port, 20, 4);
		outl(config, ioaddr + Wn3_Config);

		outw(dev->if_port == XCVR_10base2 ? StartCoax : StopCoax,
			 ioaddr + EL3_CMD);
		if (vortex_debug > 1)
			printk(KERN_DEBUG "wrote 0x%08x to Wn3_Config\n", config);
		/* AKPM: FIXME: Should reset Rx & Tx here.  P60 of 3c90xc.pdf */
	}
	EL3WINDOW(old_window);
	enable_irq(dev->irq);

leave_media_alone:
	if (vortex_debug > 2)
	  printk(KERN_DEBUG "%s: Media selection timer finished, %s.\n",
			 dev->name, media_tbl[dev->if_port].name);

	mod_timer(&vp->timer, RUN_AT(next_tick));
	if (vp->deferred)
		outw(FakeIntr, ioaddr + EL3_CMD);
	return;
}

static void vortex_tx_timeout(struct net_device *dev)
{
	struct vortex_private *vp = (struct vortex_private *)dev->priv;
	long ioaddr = dev->base_addr;

	printk(KERN_ERR "%s: transmit timed out, tx_status %2.2x status %4.4x.\n",
		   dev->name, inb(ioaddr + TxStatus),
		   inw(ioaddr + EL3_STATUS));
	EL3WINDOW(4);
	printk(KERN_ERR "  diagnostics: net %04x media %04x dma %8.8x.\n",
		   inw(ioaddr + Wn4_NetDiag), inw(ioaddr + Wn4_Media),
		   inl(ioaddr + PktStatus));
	/* Slight code bloat to be user friendly. */
	if ((inb(ioaddr + TxStatus) & 0x88) == 0x88)
		printk(KERN_ERR "%s: Transmitter encountered 16 collisions --"
			   " network cable problem?\n", dev->name);
	if (inw(ioaddr + EL3_STATUS) & IntLatch) {
		printk(KERN_ERR "%s: Interrupt posted but not delivered --"
			   " IRQ blocked by another device?\n", dev->name);
		/* Bad idea here.. but we might as well handle a few events. */
		{
			/*
			 * Block interrupts because vortex_interrupt does a bare spin_lock()
			 */
			unsigned long flags;
			local_irq_save(flags);
			if (vp->full_bus_master_tx)
				boomerang_interrupt(dev->irq, dev, 0);
			else
				vortex_interrupt(dev->irq, dev, 0);
			local_irq_restore(flags);
		}
	}

	if (vortex_debug > 0)
		dump_tx_ring(dev);

	issue_and_wait(dev, TxReset);

	vp->stats.tx_errors++;
	if (vp->full_bus_master_tx) {
		printk(KERN_DEBUG "%s: Resetting the Tx ring pointer.\n", dev->name);
		if (vp->cur_tx - vp->dirty_tx > 0  &&  inl(ioaddr + DownListPtr) == 0)
			outl(vp->tx_ring_dma + (vp->dirty_tx % TX_RING_SIZE) * sizeof(struct boom_tx_desc),
				 ioaddr + DownListPtr);
		if (vp->cur_tx - vp->dirty_tx < TX_RING_SIZE)
			netif_wake_queue (dev);
		if (vp->drv_flags & IS_BOOMERANG)
			outb(PKT_BUF_SZ>>8, ioaddr + TxFreeThreshold);
		outw(DownUnstall, ioaddr + EL3_CMD);
	} else {
		vp->stats.tx_dropped++;
		netif_wake_queue(dev);
	}
	
	/* Issue Tx Enable */
	outw(TxEnable, ioaddr + EL3_CMD);
	dev->trans_start = jiffies;
	
	/* Switch to register set 7 for normal use. */
	EL3WINDOW(7);
}

/*
 * Handle uncommon interrupt sources.  This is a separate routine to minimize
 * the cache impact.
 */
static void
vortex_error(struct net_device *dev, int status)
{
	struct vortex_private *vp = (struct vortex_private *)dev->priv;
	long ioaddr = dev->base_addr;
	int do_tx_reset = 0, reset_mask = 0;
	unsigned char tx_status = 0;

	if (vortex_debug > 2) {
		printk(KERN_ERR "%s: vortex_error(), status=0x%x\n", dev->name, status);
	}

	if (status & TxComplete) {			/* Really "TxError" for us. */
		tx_status = inb(ioaddr + TxStatus);
		/* Presumably a tx-timeout. We must merely re-enable. */
		if (vortex_debug > 2
			|| (tx_status != 0x88 && vortex_debug > 0)) {
			printk(KERN_ERR "%s: Transmit error, Tx status register %2.2x.\n",
				   dev->name, tx_status);
			if (tx_status == 0x82) {
				printk(KERN_ERR "Probably a duplex mismatch.  See "
						"Documentation/networking/vortex.txt\n");
			}
			dump_tx_ring(dev);
		}
		if (tx_status & 0x14)  vp->stats.tx_fifo_errors++;
		if (tx_status & 0x38)  vp->stats.tx_aborted_errors++;
		outb(0, ioaddr + TxStatus);
		if (tx_status & 0x30) {			/* txJabber or txUnderrun */
			do_tx_reset = 1;
		} else if ((tx_status & 0x08) && (vp->drv_flags & MAX_COLLISION_RESET)) {	/* maxCollisions */
			do_tx_reset = 1;
			reset_mask = 0x0108;		/* Reset interface logic, but not download logic */
		} else {						/* Merely re-enable the transmitter. */
			outw(TxEnable, ioaddr + EL3_CMD);
		}
	}

	if (status & RxEarly) {				/* Rx early is unused. */
		vortex_rx(dev);
		outw(AckIntr | RxEarly, ioaddr + EL3_CMD);
	}
	if (status & StatsFull) {			/* Empty statistics. */
		static int DoneDidThat;
		if (vortex_debug > 4)
			printk(KERN_DEBUG "%s: Updating stats.\n", dev->name);
		update_stats(ioaddr, dev);
		/* HACK: Disable statistics as an interrupt source. */
		/* This occurs when we have the wrong media type! */
		if (DoneDidThat == 0  &&
			inw(ioaddr + EL3_STATUS)