コード例 #1
0
ファイル: sonic.c プロジェクト: CSCLOG/beaglebone
static void sonic_tx_timeout(struct net_device *dev)
{
    struct sonic_local *lp = netdev_priv(dev);
    int i;
    /*
     * put the Sonic into software-reset mode and
     * disable all interrupts before releasing DMA buffers
     */
    SONIC_WRITE(SONIC_IMR, 0);
    SONIC_WRITE(SONIC_ISR, 0x7fff);
    SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
    /* We could resend the original skbs. Easier to re-initialise. */
    for (i = 0; i < SONIC_NUM_TDS; i++) {
        if(lp->tx_laddr[i]) {
            dma_unmap_single(lp->device, lp->tx_laddr[i], lp->tx_len[i], DMA_TO_DEVICE);
            lp->tx_laddr[i] = (dma_addr_t)0;
        }
        if(lp->tx_skb[i]) {
            dev_kfree_skb(lp->tx_skb[i]);
            lp->tx_skb[i] = NULL;
        }
    }
    /* Try to restart the adaptor. */
    sonic_init(dev);
    lp->stats.tx_errors++;
    dev->trans_start = jiffies; /* prevent tx timeout */
    netif_wake_queue(dev);
}
コード例 #2
0
static void __devinit mac_onboard_sonic_ethernet_addr(struct net_device *dev)
{
	struct sonic_local *lp = netdev_priv(dev);
	const int prom_addr = ONBOARD_SONIC_PROM_BASE;
	unsigned short val;

	
	if (hwreg_present((void *)prom_addr)) {
		int i;

		for (i = 0; i < 6; i++)
			dev->dev_addr[i] = SONIC_READ_PROM(i);
		if (!INVALID_MAC(dev->dev_addr))
			return;

		
		bit_reverse_addr(dev->dev_addr);
		if (!INVALID_MAC(dev->dev_addr))
			return;

		
		printk(KERN_WARNING "macsonic: MAC address in PROM seems "
		                    "to be invalid, trying CAM\n");
	} else {
		printk(KERN_WARNING "macsonic: cannot read MAC address from "
		                    "PROM, trying CAM\n");
	}

	

	SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
	SONIC_WRITE(SONIC_CEP, 15);

	val = SONIC_READ(SONIC_CAP2);
	dev->dev_addr[5] = val >> 8;
	dev->dev_addr[4] = val & 0xff;
	val = SONIC_READ(SONIC_CAP1);
	dev->dev_addr[3] = val >> 8;
	dev->dev_addr[2] = val & 0xff;
	val = SONIC_READ(SONIC_CAP0);
	dev->dev_addr[1] = val >> 8;
	dev->dev_addr[0] = val & 0xff;

	if (!INVALID_MAC(dev->dev_addr))
		return;

	

	printk(KERN_WARNING "macsonic: MAC address in CAM entry 15 "
	                    "seems invalid, will use a random MAC\n");
	random_ether_addr(dev->dev_addr);
}
コード例 #3
0
static int __init mac_onboard_sonic_ethernet_addr(struct net_device *dev)
{
	struct sonic_local *lp = netdev_priv(dev);
	const int prom_addr = ONBOARD_SONIC_PROM_BASE;
	int i;

	/* On NuBus boards we can sometimes look in the ROM resources.
	   No such luck for comm-slot/onboard. */
	for(i = 0; i < 6; i++)
		dev->dev_addr[i] = SONIC_READ_PROM(i);

	/* Most of the time, the address is bit-reversed.  The NetBSD
	   source has a rather long and detailed historical account of
	   why this is so. */
	if (memcmp(dev->dev_addr, "\x08\x00\x07", 3) &&
	    memcmp(dev->dev_addr, "\x00\xA0\x40", 3) &&
	    memcmp(dev->dev_addr, "\x00\x80\x19", 3) &&
	    memcmp(dev->dev_addr, "\x00\x05\x02", 3))
		bit_reverse_addr(dev->dev_addr);
	else
		return 0;

	/* If we still have what seems to be a bogus address, we'll
           look in the CAM.  The top entry should be ours. */
	/* Danger! This only works if MacOS has already initialized
           the card... */
	if (memcmp(dev->dev_addr, "\x08\x00\x07", 3) &&
	    memcmp(dev->dev_addr, "\x00\xA0\x40", 3) &&
	    memcmp(dev->dev_addr, "\x00\x80\x19", 3) &&
	    memcmp(dev->dev_addr, "\x00\x05\x02", 3))
	{
		unsigned short val;

		printk(KERN_INFO "macsonic: PROM seems to be wrong, trying CAM entry 15\n");

		SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
		SONIC_WRITE(SONIC_CEP, 15);

		val = SONIC_READ(SONIC_CAP2);
		dev->dev_addr[5] = val >> 8;
		dev->dev_addr[4] = val & 0xff;
		val = SONIC_READ(SONIC_CAP1);
		dev->dev_addr[3] = val >> 8;
		dev->dev_addr[2] = val & 0xff;
		val = SONIC_READ(SONIC_CAP0);
		dev->dev_addr[1] = val >> 8;
		dev->dev_addr[0] = val & 0xff;

		printk(KERN_INFO "HW Address from CAM 15: %pM\n",
		       dev->dev_addr);
	} else return 0;
コード例 #4
0
ファイル: sonic.c プロジェクト: dmgerman/original
/*
 * Get the current statistics.
 * This may be called with the device open or closed.
 */
static struct net_device_stats *
sonic_get_stats(struct net_device *dev)
{
    struct sonic_local *lp = (struct sonic_local *)dev->priv;
    unsigned int base_addr = dev->base_addr;

    /* read the tally counter from the SONIC and reset them */
    lp->stats.rx_crc_errors += SONIC_READ(SONIC_CRCT);
    SONIC_WRITE(SONIC_CRCT,0xffff);
    lp->stats.rx_frame_errors += SONIC_READ(SONIC_FAET);
    SONIC_WRITE(SONIC_FAET,0xffff);
    lp->stats.rx_missed_errors += SONIC_READ(SONIC_MPT);
    SONIC_WRITE(SONIC_MPT,0xffff);
    
    return &lp->stats;
}
コード例 #5
0
static int __init macsonic_init(struct net_device *dev)
{
	struct sonic_local* lp = netdev_priv(dev);

	/* Allocate the entire chunk of memory for the descriptors.
           Note that this cannot cross a 64K boundary. */
	if ((lp->descriptors = dma_alloc_coherent(lp->device,
	            SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
	            &lp->descriptors_laddr, GFP_KERNEL)) == NULL) {
		printk(KERN_ERR "%s: couldn't alloc DMA memory for descriptors.\n", lp->device->bus_id);
		return -ENOMEM;
	}

	/* Now set up the pointers to point to the appropriate places */
	lp->cda = lp->descriptors;
	lp->tda = lp->cda + (SIZEOF_SONIC_CDA
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));

	lp->cda_laddr = lp->descriptors_laddr;
	lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));

	dev->open = macsonic_open;
	dev->stop = macsonic_close;
	dev->hard_start_xmit = sonic_send_packet;
	dev->get_stats = sonic_get_stats;
	dev->set_multicast_list = &sonic_multicast_list;
	dev->tx_timeout = sonic_tx_timeout;
	dev->watchdog_timeo = TX_TIMEOUT;

	/*
	 * clear tally counter
	 */
	SONIC_WRITE(SONIC_CRCT, 0xffff);
	SONIC_WRITE(SONIC_FAET, 0xffff);
	SONIC_WRITE(SONIC_MPT, 0xffff);

	return 0;
}
コード例 #6
0
static int __devinit macsonic_init(struct net_device *dev)
{
	struct sonic_local* lp = netdev_priv(dev);

	/* Allocate the entire chunk of memory for the descriptors.
           Note that this cannot cross a 64K boundary. */
	if ((lp->descriptors = dma_alloc_coherent(lp->device,
	            SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
	            &lp->descriptors_laddr, GFP_KERNEL)) == NULL) {
		printk(KERN_ERR "%s: couldn't alloc DMA memory for descriptors.\n",
		       dev_name(lp->device));
		return -ENOMEM;
	}

	/* Now set up the pointers to point to the appropriate places */
	lp->cda = lp->descriptors;
	lp->tda = lp->cda + (SIZEOF_SONIC_CDA
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));

	lp->cda_laddr = lp->descriptors_laddr;
	lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));

	dev->netdev_ops = &macsonic_netdev_ops;
	dev->watchdog_timeo = TX_TIMEOUT;

	/*
	 * clear tally counter
	 */
	SONIC_WRITE(SONIC_CRCT, 0xffff);
	SONIC_WRITE(SONIC_FAET, 0xffff);
	SONIC_WRITE(SONIC_MPT, 0xffff);

	return 0;
}
コード例 #7
0
ファイル: sonic.c プロジェクト: CSCLOG/beaglebone
/*
 * Close the SONIC device
 */
static int sonic_close(struct net_device *dev)
{
    struct sonic_local *lp = netdev_priv(dev);
    int i;

    if (sonic_debug > 2)
        printk("sonic_close\n");

    netif_stop_queue(dev);

    /*
     * stop the SONIC, disable interrupts
     */
    SONIC_WRITE(SONIC_IMR, 0);
    SONIC_WRITE(SONIC_ISR, 0x7fff);
    SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);

    /* unmap and free skbs that haven't been transmitted */
    for (i = 0; i < SONIC_NUM_TDS; i++) {
        if(lp->tx_laddr[i]) {
            dma_unmap_single(lp->device, lp->tx_laddr[i], lp->tx_len[i], DMA_TO_DEVICE);
            lp->tx_laddr[i] = (dma_addr_t)0;
        }
        if(lp->tx_skb[i]) {
            dev_kfree_skb(lp->tx_skb[i]);
            lp->tx_skb[i] = NULL;
        }
    }

    /* unmap and free the receive buffers */
    for (i = 0; i < SONIC_NUM_RRS; i++) {
        if(lp->rx_laddr[i]) {
            dma_unmap_single(lp->device, lp->rx_laddr[i], SONIC_RBSIZE, DMA_FROM_DEVICE);
            lp->rx_laddr[i] = (dma_addr_t)0;
        }
        if(lp->rx_skb[i]) {
            dev_kfree_skb(lp->rx_skb[i]);
            lp->rx_skb[i] = NULL;
        }
    }

    return 0;
}
コード例 #8
0
ファイル: sonic.c プロジェクト: dmgerman/original
/*
 * Set or clear the multicast filter for this adaptor.
 */
static void
sonic_multicast_list(struct net_device *dev)
{
    struct sonic_local *lp = (struct sonic_local *)dev->priv;    
    unsigned int base_addr = dev->base_addr;    
    unsigned int rcr;
    struct dev_mc_list *dmi = dev->mc_list;
    unsigned char *addr;
    int i;

    rcr = SONIC_READ(SONIC_RCR) & ~(SONIC_RCR_PRO | SONIC_RCR_AMC);
    rcr |= SONIC_RCR_BRD; /* accept broadcast packets */
    
    if (dev->flags & IFF_PROMISC) {         /* set promiscuous mode */
	rcr |= SONIC_RCR_PRO;
    } else {
	if ((dev->flags & IFF_ALLMULTI) || (dev->mc_count > 15)) {
	    rcr |= SONIC_RCR_AMC;
	} else {
	    if (sonic_debug > 2)
	      printk ("sonic_multicast_list: mc_count %d\n",dev->mc_count);
	    lp->cda.cam_enable = 1; /* always enable our own address */
	    for (i = 1; i <= dev->mc_count; i++) {
		addr = dmi->dmi_addr;
		dmi = dmi->next;
		lp->cda.cam_desc[i].cam_cap0 = addr[1] << 8 | addr[0];
		lp->cda.cam_desc[i].cam_cap1 = addr[3] << 8 | addr[2];
		lp->cda.cam_desc[i].cam_cap2 = addr[5] << 8 | addr[4];
		lp->cda.cam_enable |= (1 << i);
	    }
	    SONIC_WRITE(SONIC_CDC,16);
	    /* issue Load CAM command */
	    SONIC_WRITE(SONIC_CDP, lp->cda_laddr & 0xffff);	    
	    SONIC_WRITE(SONIC_CMD,SONIC_CR_LCAM);
	}
    }
    
    if (sonic_debug > 2)
      printk("sonic_multicast_list: setting RCR=%x\n",rcr);
    
    SONIC_WRITE(SONIC_RCR,rcr);
}
コード例 #9
0
static int __devinit macsonic_init(struct net_device *dev)
{
	struct sonic_local* lp = netdev_priv(dev);

	
	if ((lp->descriptors = dma_alloc_coherent(lp->device,
	            SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
	            &lp->descriptors_laddr, GFP_KERNEL)) == NULL) {
		printk(KERN_ERR "%s: couldn't alloc DMA memory for descriptors.\n",
		       dev_name(lp->device));
		return -ENOMEM;
	}

	
	lp->cda = lp->descriptors;
	lp->tda = lp->cda + (SIZEOF_SONIC_CDA
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));

	lp->cda_laddr = lp->descriptors_laddr;
	lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));

	dev->netdev_ops = &macsonic_netdev_ops;
	dev->watchdog_timeo = TX_TIMEOUT;

	
	SONIC_WRITE(SONIC_CRCT, 0xffff);
	SONIC_WRITE(SONIC_FAET, 0xffff);
	SONIC_WRITE(SONIC_MPT, 0xffff);

	return 0;
}
コード例 #10
0
ファイル: sonic.c プロジェクト: dmgerman/original
/*
 * Close the SONIC device
 */
static int
sonic_close(struct net_device *dev)
{
    unsigned int base_addr = dev->base_addr;
    
    if (sonic_debug > 2)
      printk ("sonic_close\n");

    dev->tbusy = 1;
    dev->start = 0;
    
    /*
     * stop the SONIC, disable interrupts
     */
    SONIC_WRITE(SONIC_ISR,0x7fff);
    SONIC_WRITE(SONIC_IMR,0);
    SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);

    sonic_free_irq(dev->irq, dev);		/* release the IRQ */

    return 0;
}
コード例 #11
0
ファイル: sonic.c プロジェクト: dmgerman/original
/*
 * We have a good packet(s), get it/them out of the buffers.
 */
static void
sonic_rx(struct net_device *dev)
{
    unsigned int base_addr = dev->base_addr;
    struct sonic_local *lp = (struct sonic_local *)dev->priv;
    sonic_rd_t *rd = &lp->rda[lp->cur_rx & SONIC_RDS_MASK];
    int status;

    while (rd->in_use == 0) {
	struct sk_buff *skb;
	int pkt_len;
	unsigned char *pkt_ptr;
	
	status = rd->rx_status;
	if (sonic_debug > 3)
	  printk ("status %x, cur_rx %d, cur_rra %x\n",status,lp->cur_rx,lp->cur_rra);
	if (status & SONIC_RCR_PRX) {	    
	    pkt_len = rd->rx_pktlen;
	    pkt_ptr = (char *)sonic_chiptomem((rd->rx_pktptr_h << 16) +
						      rd->rx_pktptr_l);
	    
	    if (sonic_debug > 3)
	      printk ("pktptr %p (rba %p) h:%x l:%x, bsize h:%x l:%x\n", pkt_ptr,lp->rba,
		      rd->rx_pktptr_h,rd->rx_pktptr_l,
		      SONIC_READ(SONIC_RBWC1),SONIC_READ(SONIC_RBWC0));
	
	    /* Malloc up new buffer. */
	    skb = dev_alloc_skb(pkt_len+2);
	    if (skb == NULL) {
		printk("%s: Memory squeeze, dropping packet.\n", dev->name);
		lp->stats.rx_dropped++;
		break;
	    }
	    skb->dev = dev;
	    skb_reserve(skb,2);	/* 16 byte align */
	    skb_put(skb,pkt_len);	/* Make room */
	    eth_copy_and_sum(skb, pkt_ptr, pkt_len, 0);
	    skb->protocol=eth_type_trans(skb,dev);
	    netif_rx(skb);			/* pass the packet to upper layers */
	    lp->stats.rx_packets++;
	    lp->stats.rx_bytes += pkt_len;
	    
	} else {
	    /* This should only happen, if we enable accepting broken packets. */
	    lp->stats.rx_errors++;
	    if (status & SONIC_RCR_FAER) lp->stats.rx_frame_errors++;
	    if (status & SONIC_RCR_CRCR) lp->stats.rx_crc_errors++;
	}
	
	rd->in_use = 1;
	rd = &lp->rda[(++lp->cur_rx) & SONIC_RDS_MASK];
	/* now give back the buffer to the receive buffer area */
	if (status & SONIC_RCR_LPKT) {
	    /*
	     * this was the last packet out of the current receice buffer
	     * give the buffer back to the SONIC
	     */
	    lp->cur_rra += sizeof(sonic_rr_t);
	    if (lp->cur_rra > (lp->rra_laddr + (SONIC_NUM_RRS-1) * sizeof(sonic_rr_t)))
		lp->cur_rra = lp->rra_laddr;
	    SONIC_WRITE(SONIC_RWP, lp->cur_rra & 0xffff);
	} else
	    printk ("%s: rx desc without RCR_LPKT. Shouldn't happen !?\n",dev->name);
    }
    /*
     * If any worth-while packets have been received, dev_rint()
     * has done a mark_bh(NET_BH) for us and will work on them
     * when we get to the bottom-half routine.
     */
    return;
}
コード例 #12
0
ファイル: sonic.c プロジェクト: dmgerman/original
/*
 * The typical workload of the driver:
 * Handle the network interface interrupts.
 */
static void
sonic_interrupt(int irq, void *dev_id, struct pt_regs * regs)
{
    struct net_device *dev = (struct net_device *)dev_id;
    unsigned int base_addr = dev->base_addr;
    struct sonic_local *lp;
    int status;

    if (dev == NULL) {
	printk ("sonic_interrupt: irq %d for unknown device.\n", irq);
	return;
    }
    dev->interrupt = 1;
    lp = (struct sonic_local *)dev->priv;

    status = SONIC_READ(SONIC_ISR);
    SONIC_WRITE(SONIC_ISR,0x7fff); /* clear all bits */
  
    if (sonic_debug > 2)
      printk("sonic_interrupt: ISR=%x\n",status);

    if (status & SONIC_INT_PKTRX) {
	sonic_rx(dev);				/* got packet(s) */
    }
    
    if (status & SONIC_INT_TXDN) {
	int dirty_tx = lp->dirty_tx;

	while (dirty_tx < lp->cur_tx) {
	    int entry = dirty_tx & SONIC_TDS_MASK;
	    int status = lp->tda[entry].tx_status;

	    if (sonic_debug > 3)
	      printk ("sonic_interrupt: status %d, cur_tx %d, dirty_tx %d\n",
		      status,lp->cur_tx,lp->dirty_tx);

	    if (status == 0) {
		/* It still hasn't been Txed, kick the sonic again */
		SONIC_WRITE(SONIC_CMD,SONIC_CR_TXP);		
		break;
	    }

	    /* put back EOL and free descriptor */
	    lp->tda[entry].tx_frag_count = 0;
	    lp->tda[entry].tx_status = 0;

	    if (status & 0x0001)
	      lp->stats.tx_packets++;
	    else {
		lp->stats.tx_errors++;
		if (status & 0x0642) lp->stats.tx_aborted_errors++;
		if (status & 0x0180) lp->stats.tx_carrier_errors++;
		if (status & 0x0020) lp->stats.tx_window_errors++;
		if (status & 0x0004) lp->stats.tx_fifo_errors++;
	    }

	    /* We must free the original skb */
	    if (lp->tx_skb[entry]) {
		dev_kfree_skb(lp->tx_skb[entry]);
		lp->tx_skb[entry] = 0;
	    }
	    /* and the VDMA address */
	    vdma_free(lp->tx_laddr[entry]);
	    dirty_tx++;
	}
	
	if (lp->tx_full && dev->tbusy
	    && dirty_tx + SONIC_NUM_TDS > lp->cur_tx + 2) {
	    /* The ring is no longer full, clear tbusy. */
	    lp->tx_full = 0;
	    dev->tbusy = 0;
	    mark_bh(NET_BH);
	}
	
	lp->dirty_tx = dirty_tx;
    }
    
    /*
     * check error conditions
     */
    if (status & SONIC_INT_RFO) {
	printk ("%s: receive fifo underrun\n",dev->name);
	lp->stats.rx_fifo_errors++;
    }
    if (status & SONIC_INT_RDE) {
	printk ("%s: receive descriptors exhausted\n",dev->name);
	lp->stats.rx_dropped++;
    }
    if (status & SONIC_INT_RBE) {
	printk ("%s: receive buffer exhausted\n",dev->name);
	lp->stats.rx_dropped++;	
    }
    if (status & SONIC_INT_RBAE) {
	printk ("%s: receive buffer area exhausted\n",dev->name);
	lp->stats.rx_dropped++;	
    }

    /* counter overruns; all counters are 16bit wide */
    if (status & SONIC_INT_FAE)
      lp->stats.rx_frame_errors += 65536;
    if (status & SONIC_INT_CRC)
      lp->stats.rx_crc_errors += 65536;
    if (status & SONIC_INT_MP)
      lp->stats.rx_missed_errors += 65536;

    /* transmit error */
    if (status & SONIC_INT_TXER)
      lp->stats.tx_errors++;
    
    /*
     * clear interrupt bits and return
     */
    SONIC_WRITE(SONIC_ISR,status);
    dev->interrupt = 0;
    return;
}
コード例 #13
0
static int __devinit mac_nubus_sonic_probe(struct net_device *dev)
{
	static int slots;
	struct nubus_dev* ndev = NULL;
	struct sonic_local* lp = netdev_priv(dev);
	unsigned long base_addr, prom_addr;
	u16 sonic_dcr;
	int id = -1;
	int reg_offset, dma_bitmode;

	/* Find the first SONIC that hasn't been initialized already */
	while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK,
				       NUBUS_TYPE_ETHERNET, ndev)) != NULL)
	{
		/* Have we seen it already? */
		if (slots & (1<<ndev->board->slot))
			continue;
		slots |= 1<<ndev->board->slot;

		/* Is it one of ours? */
		if ((id = macsonic_ident(ndev)) != -1)
			break;
	}

	if (ndev == NULL)
		return -ENODEV;

	switch (id) {
	case MACSONIC_DUODOCK:
		base_addr = ndev->board->slot_addr + DUODOCK_SONIC_REGISTERS;
		prom_addr = ndev->board->slot_addr + DUODOCK_SONIC_PROM_BASE;
		sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT0 | SONIC_DCR_RFT1 |
		            SONIC_DCR_TFT0;
		reg_offset = 2;
		dma_bitmode = SONIC_BITMODE32;
		break;
	case MACSONIC_APPLE:
		base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
		prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
		sonic_dcr = SONIC_DCR_BMS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0;
		reg_offset = 0;
		dma_bitmode = SONIC_BITMODE32;
		break;
	case MACSONIC_APPLE16:
		base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
		prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
		sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
		            SONIC_DCR_PO1 | SONIC_DCR_BMS;
		reg_offset = 0;
		dma_bitmode = SONIC_BITMODE16;
		break;
	case MACSONIC_DAYNALINK:
		base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
		prom_addr = ndev->board->slot_addr + DAYNALINK_PROM_BASE;
		sonic_dcr = SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
		            SONIC_DCR_PO1 | SONIC_DCR_BMS;
		reg_offset = 0;
		dma_bitmode = SONIC_BITMODE16;
		break;
	case MACSONIC_DAYNA:
		base_addr = ndev->board->slot_addr + DAYNA_SONIC_REGISTERS;
		prom_addr = ndev->board->slot_addr + DAYNA_SONIC_MAC_ADDR;
		sonic_dcr = SONIC_DCR_BMS |
		            SONIC_DCR_RFT1 | SONIC_DCR_TFT0 | SONIC_DCR_PO1;
		reg_offset = 0;
		dma_bitmode = SONIC_BITMODE16;
		break;
	default:
		printk(KERN_ERR "macsonic: WTF, id is %d\n", id);
		return -ENODEV;
	}

	/* Danger!  My arms are flailing wildly!  You *must* set lp->reg_offset
	 * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
	dev->base_addr = base_addr;
	lp->reg_offset = reg_offset;
	lp->dma_bitmode = dma_bitmode;
	dev->irq = SLOT2IRQ(ndev->board->slot);

	if (!sonic_version_printed) {
		printk(KERN_INFO "%s", version);
		sonic_version_printed = 1;
	}
	printk(KERN_INFO "%s: %s in slot %X\n",
	       dev_name(lp->device), ndev->board->name, ndev->board->slot);
	printk(KERN_INFO "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
	       dev_name(lp->device), SONIC_READ(SONIC_SR), dma_bitmode?32:16, reg_offset);

#if 0 /* This is sometimes useful to find out how MacOS configured the card. */
	printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", dev_name(lp->device),
	       SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
#endif

	/* Software reset, then initialize control registers. */
	SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
	SONIC_WRITE(SONIC_DCR, sonic_dcr | (dma_bitmode ? SONIC_DCR_DW : 0));
	/* This *must* be written back to in order to restore the
	 * extended programmable output bits, since it may not have been
	 * initialised since the hardware reset. */
	SONIC_WRITE(SONIC_DCR2, 0);

	/* Clear *and* disable interrupts to be on the safe side */
	SONIC_WRITE(SONIC_IMR, 0);
	SONIC_WRITE(SONIC_ISR, 0x7fff);

	/* Now look for the MAC address. */
	if (mac_nubus_sonic_ethernet_addr(dev, prom_addr, id) != 0)
		return -ENODEV;

	/* Shared init code */
	return macsonic_init(dev);
}
コード例 #14
0
static int __devinit mac_onboard_sonic_probe(struct net_device *dev)
{
	struct sonic_local* lp = netdev_priv(dev);
	int sr;
	int commslot = 0;

	if (!MACH_IS_MAC)
		return -ENODEV;

	printk(KERN_INFO "Checking for internal Macintosh ethernet (SONIC).. ");

	/* Bogus probing, on the models which may or may not have
	   Ethernet (BTW, the Ethernet *is* always at the same
	   address, and nothing else lives there, at least if Apple's
	   documentation is to be believed) */
	if (macintosh_config->ident == MAC_MODEL_Q630 ||
	    macintosh_config->ident == MAC_MODEL_P588 ||
	    macintosh_config->ident == MAC_MODEL_P575 ||
	    macintosh_config->ident == MAC_MODEL_C610) {
		unsigned long flags;
		int card_present;

		local_irq_save(flags);
		card_present = hwreg_present((void*)ONBOARD_SONIC_REGISTERS);
		local_irq_restore(flags);

		if (!card_present) {
			printk("none.\n");
			return -ENODEV;
		}
		commslot = 1;
	}

	printk("yes\n");

	/* Danger!  My arms are flailing wildly!  You *must* set lp->reg_offset
	 * and dev->base_addr before using SONIC_READ() or SONIC_WRITE() */
	dev->base_addr = ONBOARD_SONIC_REGISTERS;
	if (via_alt_mapping)
		dev->irq = IRQ_AUTO_3;
	else
		dev->irq = IRQ_NUBUS_9;

	if (!sonic_version_printed) {
		printk(KERN_INFO "%s", version);
		sonic_version_printed = 1;
	}
	printk(KERN_INFO "%s: onboard / comm-slot SONIC at 0x%08lx\n",
	       dev_name(lp->device), dev->base_addr);

	/* The PowerBook's SONIC is 16 bit always. */
	if (macintosh_config->ident == MAC_MODEL_PB520) {
		lp->reg_offset = 0;
		lp->dma_bitmode = SONIC_BITMODE16;
		sr = SONIC_READ(SONIC_SR);
	} else if (commslot) {
		/* Some of the comm-slot cards are 16 bit.  But some
		   of them are not.  The 32-bit cards use offset 2 and
		   have known revisions, we try reading the revision
		   register at offset 2, if we don't get a known revision
		   we assume 16 bit at offset 0.  */
		lp->reg_offset = 2;
		lp->dma_bitmode = SONIC_BITMODE16;

		sr = SONIC_READ(SONIC_SR);
		if (sr == 0x0004 || sr == 0x0006 || sr == 0x0100 || sr == 0x0101)
			/* 83932 is 0x0004 or 0x0006, 83934 is 0x0100 or 0x0101 */
			lp->dma_bitmode = SONIC_BITMODE32;
		else {
			lp->dma_bitmode = SONIC_BITMODE16;
			lp->reg_offset = 0;
			sr = SONIC_READ(SONIC_SR);
		}
	} else {
		/* All onboard cards are at offset 2 with 32 bit DMA. */
		lp->reg_offset = 2;
		lp->dma_bitmode = SONIC_BITMODE32;
		sr = SONIC_READ(SONIC_SR);
	}
	printk(KERN_INFO
	       "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
	       dev_name(lp->device), sr, lp->dma_bitmode?32:16, lp->reg_offset);

#if 0 /* This is sometimes useful to find out how MacOS configured the card. */
	printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", dev_name(lp->device),
	       SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
#endif

	/* Software reset, then initialize control registers. */
	SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);

	SONIC_WRITE(SONIC_DCR, SONIC_DCR_EXBUS | SONIC_DCR_BMS |
	                       SONIC_DCR_RFT1  | SONIC_DCR_TFT0 |
	                       (lp->dma_bitmode ? SONIC_DCR_DW : 0));

	/* This *must* be written back to in order to restore the
	 * extended programmable output bits, as it may not have been
	 * initialised since the hardware reset. */
	SONIC_WRITE(SONIC_DCR2, 0);

	/* Clear *and* disable interrupts to be on the safe side */
	SONIC_WRITE(SONIC_IMR, 0);
	SONIC_WRITE(SONIC_ISR, 0x7fff);

	/* Now look for the MAC address. */
	mac_onboard_sonic_ethernet_addr(dev);

	/* Shared init code */
	return macsonic_init(dev);
}
コード例 #15
0
static void __devinit mac_onboard_sonic_ethernet_addr(struct net_device *dev)
{
	struct sonic_local *lp = netdev_priv(dev);
	const int prom_addr = ONBOARD_SONIC_PROM_BASE;
	unsigned short val;

	/*
	 * On NuBus boards we can sometimes look in the ROM resources.
	 * No such luck for comm-slot/onboard.
	 * On the PowerBook 520, the PROM base address is a mystery.
	 */
	if (hwreg_present((void *)prom_addr)) {
		int i;

		for (i = 0; i < 6; i++)
			dev->dev_addr[i] = SONIC_READ_PROM(i);
		if (!INVALID_MAC(dev->dev_addr))
			return;

		/*
		 * Most of the time, the address is bit-reversed. The NetBSD
		 * source has a rather long and detailed historical account of
		 * why this is so.
		 */
		bit_reverse_addr(dev->dev_addr);
		if (!INVALID_MAC(dev->dev_addr))
			return;

		/*
		 * If we still have what seems to be a bogus address, we'll
		 * look in the CAM. The top entry should be ours.
		 */
		printk(KERN_WARNING "macsonic: MAC address in PROM seems "
		                    "to be invalid, trying CAM\n");
	} else {
		printk(KERN_WARNING "macsonic: cannot read MAC address from "
		                    "PROM, trying CAM\n");
	}

	/* This only works if MacOS has already initialized the card. */

	SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
	SONIC_WRITE(SONIC_CEP, 15);

	val = SONIC_READ(SONIC_CAP2);
	dev->dev_addr[5] = val >> 8;
	dev->dev_addr[4] = val & 0xff;
	val = SONIC_READ(SONIC_CAP1);
	dev->dev_addr[3] = val >> 8;
	dev->dev_addr[2] = val & 0xff;
	val = SONIC_READ(SONIC_CAP0);
	dev->dev_addr[1] = val >> 8;
	dev->dev_addr[0] = val & 0xff;

	if (!INVALID_MAC(dev->dev_addr))
		return;

	/* Still nonsense ... messed up someplace! */

	printk(KERN_WARNING "macsonic: MAC address in CAM entry 15 "
	                    "seems invalid, will use a random MAC\n");
	eth_hw_addr_random(dev);
}
コード例 #16
0
static int __init sonic_probe1(struct net_device *dev)
{
	static unsigned version_printed = 0;
	unsigned int silicon_revision;
	struct sonic_local *lp = netdev_priv(dev);
	unsigned int base_addr = dev->base_addr;
	int i;
	int err = 0;

	if (!request_mem_region(base_addr, 0x100, xtsonic_string))
		return -EBUSY;

	
	silicon_revision = SONIC_READ(SONIC_SR);
	if (sonic_debug > 1)
		printk("SONIC Silicon Revision = 0x%04x\n",silicon_revision);

	i = 0;
	while ((known_revisions[i] != 0xffff) &&
			(known_revisions[i] != silicon_revision))
		i++;

	if (known_revisions[i] == 0xffff) {
		printk("SONIC ethernet controller not found (0x%4x)\n",
				silicon_revision);
		return -ENODEV;
	}

	if (sonic_debug  &&  version_printed++ == 0)
		printk(version);

	
	SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
	SONIC_WRITE(SONIC_DCR,
		    SONIC_DCR_WC0|SONIC_DCR_DW|SONIC_DCR_LBR|SONIC_DCR_SBUS);
	SONIC_WRITE(SONIC_CEP,0);
	SONIC_WRITE(SONIC_IMR,0);

	SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
	SONIC_WRITE(SONIC_CEP,0);

	for (i=0; i<3; i++) {
		unsigned int val = SONIC_READ(SONIC_CAP0-i);
		dev->dev_addr[i*2] = val;
		dev->dev_addr[i*2+1] = val >> 8;
	}

	

	lp->dma_bitmode = SONIC_BITMODE32;

	
	lp->descriptors =
		dma_alloc_coherent(lp->device,
			SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
			&lp->descriptors_laddr, GFP_KERNEL);

	if (lp->descriptors == NULL) {
		printk(KERN_ERR "%s: couldn't alloc DMA memory for "
				" descriptors.\n", dev_name(lp->device));
		goto out;
	}

	lp->cda = lp->descriptors;
	lp->tda = lp->cda + (SIZEOF_SONIC_CDA
			     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
			     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
			     * SONIC_BUS_SCALE(lp->dma_bitmode));

	

	lp->cda_laddr = lp->descriptors_laddr;
	lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
				         * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
					 * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
					 * SONIC_BUS_SCALE(lp->dma_bitmode));

	dev->netdev_ops		= &xtsonic_netdev_ops;
	dev->watchdog_timeo	= TX_TIMEOUT;

	
	SONIC_WRITE(SONIC_CRCT,0xffff);
	SONIC_WRITE(SONIC_FAET,0xffff);
	SONIC_WRITE(SONIC_MPT,0xffff);

	return 0;
out:
	release_region(dev->base_addr, SONIC_MEM_SIZE);
	return err;
}
コード例 #17
0
static int __init sonic_probe1(struct net_device *dev)
{
    static unsigned version_printed = 0;
    unsigned int silicon_revision;
    struct sonic_local *lp = netdev_priv(dev);
    unsigned int base_addr = dev->base_addr;
    int i;
    int err = 0;

    if (!request_mem_region(base_addr, 0x100, xtsonic_string))
        return -EBUSY;

    /*
     * get the Silicon Revision ID. If this is one of the known
     * one assume that we found a SONIC ethernet controller at
     * the expected location.
     */
    silicon_revision = SONIC_READ(SONIC_SR);
    if (sonic_debug > 1)
        printk("SONIC Silicon Revision = 0x%04x\n",silicon_revision);

    i = 0;
    while ((known_revisions[i] != 0xffff) &&
            (known_revisions[i] != silicon_revision))
        i++;

    if (known_revisions[i] == 0xffff) {
        printk("SONIC ethernet controller not found (0x%4x)\n",
               silicon_revision);
        return -ENODEV;
    }

    if (sonic_debug  &&  version_printed++ == 0)
        printk(version);

    /*
     * Put the sonic into software reset, then retrieve ethernet address.
     * Note: we are assuming that the boot-loader has initialized the cam.
     */
    SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
    SONIC_WRITE(SONIC_DCR,
                SONIC_DCR_WC0|SONIC_DCR_DW|SONIC_DCR_LBR|SONIC_DCR_SBUS);
    SONIC_WRITE(SONIC_CEP,0);
    SONIC_WRITE(SONIC_IMR,0);

    SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
    SONIC_WRITE(SONIC_CEP,0);

    for (i=0; i<3; i++) {
        unsigned int val = SONIC_READ(SONIC_CAP0-i);
        dev->dev_addr[i*2] = val;
        dev->dev_addr[i*2+1] = val >> 8;
    }

    /* Initialize the device structure. */

    lp->dma_bitmode = SONIC_BITMODE32;

    /*
     *  Allocate local private descriptor areas in uncached space.
     *  The entire structure must be located within the same 64kb segment.
     *  A simple way to ensure this is to allocate twice the
     *  size of the structure -- given that the structure is
     *  much less than 64 kB, at least one of the halves of
     *  the allocated area will be contained entirely in 64 kB.
     *  We also allocate extra space for a pointer to allow freeing
     *  this structure later on (in xtsonic_cleanup_module()).
     */
    lp->descriptors =
        dma_alloc_coherent(lp->device,
                           SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
                           &lp->descriptors_laddr, GFP_KERNEL);

    if (lp->descriptors == NULL) {
        printk(KERN_ERR "%s: couldn't alloc DMA memory for "
               " descriptors.\n", lp->device->bus_id);
        goto out;
    }

    lp->cda = lp->descriptors;
    lp->tda = lp->cda + (SIZEOF_SONIC_CDA
                         * SONIC_BUS_SCALE(lp->dma_bitmode));
    lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
                         * SONIC_BUS_SCALE(lp->dma_bitmode));
    lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
                         * SONIC_BUS_SCALE(lp->dma_bitmode));

    /* get the virtual dma address */

    lp->cda_laddr = lp->descriptors_laddr;
    lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
                                     * SONIC_BUS_SCALE(lp->dma_bitmode));
    lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
                                     * SONIC_BUS_SCALE(lp->dma_bitmode));
    lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
                                     * SONIC_BUS_SCALE(lp->dma_bitmode));

    dev->open = xtsonic_open;
    dev->stop = xtsonic_close;
    dev->hard_start_xmit	= sonic_send_packet;
    dev->get_stats		= sonic_get_stats;
    dev->set_multicast_list	= &sonic_multicast_list;
    dev->tx_timeout		= sonic_tx_timeout;
    dev->watchdog_timeo	= TX_TIMEOUT;

    /*
     * clear tally counter
     */
    SONIC_WRITE(SONIC_CRCT,0xffff);
    SONIC_WRITE(SONIC_FAET,0xffff);
    SONIC_WRITE(SONIC_MPT,0xffff);

    return 0;
out:
    release_region(dev->base_addr, SONIC_MEM_SIZE);
    return err;
}
コード例 #18
0
ファイル: jazzsonic.c プロジェクト: AppEngine/linux-2.6
static int __init sonic_probe1(struct net_device *dev)
{
	static unsigned version_printed;
	unsigned int silicon_revision;
	unsigned int val;
	struct sonic_local *lp = netdev_priv(dev);
	int err = -ENODEV;
	int i;

	if (!request_mem_region(dev->base_addr, SONIC_MEM_SIZE, jazz_sonic_string))
		return -EBUSY;

	/*
	 * get the Silicon Revision ID. If this is one of the known
	 * one assume that we found a SONIC ethernet controller at
	 * the expected location.
	 */
	silicon_revision = SONIC_READ(SONIC_SR);
	if (sonic_debug > 1)
		printk("SONIC Silicon Revision = 0x%04x\n",silicon_revision);

	i = 0;
	while (known_revisions[i] != 0xffff
	       && known_revisions[i] != silicon_revision)
		i++;

	if (known_revisions[i] == 0xffff) {
		printk("SONIC ethernet controller not found (0x%4x)\n",
		       silicon_revision);
		goto out;
	}

	if (sonic_debug  &&  version_printed++ == 0)
		printk(version);

	printk(KERN_INFO "%s: Sonic ethernet found at 0x%08lx, ",
	       dev_name(lp->device), dev->base_addr);

	/*
	 * Put the sonic into software reset, then
	 * retrieve and print the ethernet address.
	 */
	SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
	SONIC_WRITE(SONIC_CEP,0);
	for (i=0; i<3; i++) {
		val = SONIC_READ(SONIC_CAP0-i);
		dev->dev_addr[i*2] = val;
		dev->dev_addr[i*2+1] = val >> 8;
	}

	err = -ENOMEM;

	/* Initialize the device structure. */

	lp->dma_bitmode = SONIC_BITMODE32;

	/* Allocate the entire chunk of memory for the descriptors.
           Note that this cannot cross a 64K boundary. */
	if ((lp->descriptors = dma_alloc_coherent(lp->device,
				SIZEOF_SONIC_DESC * SONIC_BUS_SCALE(lp->dma_bitmode),
				&lp->descriptors_laddr, GFP_KERNEL)) == NULL) {
		printk(KERN_ERR "%s: couldn't alloc DMA memory for descriptors.\n",
		       dev_name(lp->device));
		goto out;
	}

	/* Now set up the pointers to point to the appropriate places */
	lp->cda = lp->descriptors;
	lp->tda = lp->cda + (SIZEOF_SONIC_CDA
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rda = lp->tda + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rra = lp->rda + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));

	lp->cda_laddr = lp->descriptors_laddr;
	lp->tda_laddr = lp->cda_laddr + (SIZEOF_SONIC_CDA
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rda_laddr = lp->tda_laddr + (SIZEOF_SONIC_TD * SONIC_NUM_TDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));
	lp->rra_laddr = lp->rda_laddr + (SIZEOF_SONIC_RD * SONIC_NUM_RDS
	                     * SONIC_BUS_SCALE(lp->dma_bitmode));

	dev->netdev_ops = &sonic_netdev_ops;
	dev->watchdog_timeo = TX_TIMEOUT;

	/*
	 * clear tally counter
	 */
	SONIC_WRITE(SONIC_CRCT,0xffff);
	SONIC_WRITE(SONIC_FAET,0xffff);
	SONIC_WRITE(SONIC_MPT,0xffff);

	return 0;
out:
	release_region(dev->base_addr, SONIC_MEM_SIZE);
	return err;
}
コード例 #19
0
static int __devinit mac_nubus_sonic_probe(struct net_device *dev)
{
	static int slots;
	struct nubus_dev* ndev = NULL;
	struct sonic_local* lp = netdev_priv(dev);
	unsigned long base_addr, prom_addr;
	u16 sonic_dcr;
	int id = -1;
	int reg_offset, dma_bitmode;

	
	while ((ndev = nubus_find_type(NUBUS_CAT_NETWORK,
				       NUBUS_TYPE_ETHERNET, ndev)) != NULL)
	{
		
		if (slots & (1<<ndev->board->slot))
			continue;
		slots |= 1<<ndev->board->slot;

		
		if ((id = macsonic_ident(ndev)) != -1)
			break;
	}

	if (ndev == NULL)
		return -ENODEV;

	switch (id) {
	case MACSONIC_DUODOCK:
		base_addr = ndev->board->slot_addr + DUODOCK_SONIC_REGISTERS;
		prom_addr = ndev->board->slot_addr + DUODOCK_SONIC_PROM_BASE;
		sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT0 | SONIC_DCR_RFT1 |
		            SONIC_DCR_TFT0;
		reg_offset = 2;
		dma_bitmode = SONIC_BITMODE32;
		break;
	case MACSONIC_APPLE:
		base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
		prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
		sonic_dcr = SONIC_DCR_BMS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0;
		reg_offset = 0;
		dma_bitmode = SONIC_BITMODE32;
		break;
	case MACSONIC_APPLE16:
		base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
		prom_addr = ndev->board->slot_addr + APPLE_SONIC_PROM_BASE;
		sonic_dcr = SONIC_DCR_EXBUS | SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
		            SONIC_DCR_PO1 | SONIC_DCR_BMS;
		reg_offset = 0;
		dma_bitmode = SONIC_BITMODE16;
		break;
	case MACSONIC_DAYNALINK:
		base_addr = ndev->board->slot_addr + APPLE_SONIC_REGISTERS;
		prom_addr = ndev->board->slot_addr + DAYNALINK_PROM_BASE;
		sonic_dcr = SONIC_DCR_RFT1 | SONIC_DCR_TFT0 |
		            SONIC_DCR_PO1 | SONIC_DCR_BMS;
		reg_offset = 0;
		dma_bitmode = SONIC_BITMODE16;
		break;
	case MACSONIC_DAYNA:
		base_addr = ndev->board->slot_addr + DAYNA_SONIC_REGISTERS;
		prom_addr = ndev->board->slot_addr + DAYNA_SONIC_MAC_ADDR;
		sonic_dcr = SONIC_DCR_BMS |
		            SONIC_DCR_RFT1 | SONIC_DCR_TFT0 | SONIC_DCR_PO1;
		reg_offset = 0;
		dma_bitmode = SONIC_BITMODE16;
		break;
	default:
		printk(KERN_ERR "macsonic: WTF, id is %d\n", id);
		return -ENODEV;
	}

	
	dev->base_addr = base_addr;
	lp->reg_offset = reg_offset;
	lp->dma_bitmode = dma_bitmode;
	dev->irq = SLOT2IRQ(ndev->board->slot);

	if (!sonic_version_printed) {
		printk(KERN_INFO "%s", version);
		sonic_version_printed = 1;
	}
	printk(KERN_INFO "%s: %s in slot %X\n",
	       dev_name(lp->device), ndev->board->name, ndev->board->slot);
	printk(KERN_INFO "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
	       dev_name(lp->device), SONIC_READ(SONIC_SR), dma_bitmode?32:16, reg_offset);

#if 0 
	printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", dev_name(lp->device),
	       SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
#endif

	
	SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);
	SONIC_WRITE(SONIC_DCR, sonic_dcr | (dma_bitmode ? SONIC_DCR_DW : 0));
	
	SONIC_WRITE(SONIC_DCR2, 0);

	
	SONIC_WRITE(SONIC_IMR, 0);
	SONIC_WRITE(SONIC_ISR, 0x7fff);

	
	if (mac_nubus_sonic_ethernet_addr(dev, prom_addr, id) != 0)
		return -ENODEV;

	
	return macsonic_init(dev);
}
コード例 #20
0
static int __devinit mac_onboard_sonic_probe(struct net_device *dev)
{
	
	static int once_is_more_than_enough;
	struct sonic_local* lp = netdev_priv(dev);
	int sr;
	int commslot = 0;

	if (once_is_more_than_enough)
		return -ENODEV;
	once_is_more_than_enough = 1;

	if (!MACH_IS_MAC)
		return -ENODEV;

	if (macintosh_config->ether_type != MAC_ETHER_SONIC)
		return -ENODEV;

	printk(KERN_INFO "Checking for internal Macintosh ethernet (SONIC).. ");

	
	if (macintosh_config->ident == MAC_MODEL_Q630 ||
	    macintosh_config->ident == MAC_MODEL_P588 ||
	    macintosh_config->ident == MAC_MODEL_P575 ||
	    macintosh_config->ident == MAC_MODEL_C610) {
		unsigned long flags;
		int card_present;

		local_irq_save(flags);
		card_present = hwreg_present((void*)ONBOARD_SONIC_REGISTERS);
		local_irq_restore(flags);

		if (!card_present) {
			printk("none.\n");
			return -ENODEV;
		}
		commslot = 1;
	}

	printk("yes\n");

	
	dev->base_addr = ONBOARD_SONIC_REGISTERS;
	if (via_alt_mapping)
		dev->irq = IRQ_AUTO_3;
	else
		dev->irq = IRQ_NUBUS_9;

	if (!sonic_version_printed) {
		printk(KERN_INFO "%s", version);
		sonic_version_printed = 1;
	}
	printk(KERN_INFO "%s: onboard / comm-slot SONIC at 0x%08lx\n",
	       dev_name(lp->device), dev->base_addr);

	
	if (macintosh_config->ident == MAC_MODEL_PB520) {
		lp->reg_offset = 0;
		lp->dma_bitmode = SONIC_BITMODE16;
		sr = SONIC_READ(SONIC_SR);
	} else if (commslot) {
		
		lp->reg_offset = 2;
		lp->dma_bitmode = SONIC_BITMODE16;

		sr = SONIC_READ(SONIC_SR);
		if (sr == 0x0004 || sr == 0x0006 || sr == 0x0100 || sr == 0x0101)
			
			lp->dma_bitmode = SONIC_BITMODE32;
		else {
			lp->dma_bitmode = SONIC_BITMODE16;
			lp->reg_offset = 0;
			sr = SONIC_READ(SONIC_SR);
		}
	} else {
		
		lp->reg_offset = 2;
		lp->dma_bitmode = SONIC_BITMODE32;
		sr = SONIC_READ(SONIC_SR);
	}
	printk(KERN_INFO
	       "%s: revision 0x%04x, using %d bit DMA and register offset %d\n",
	       dev_name(lp->device), sr, lp->dma_bitmode?32:16, lp->reg_offset);

#if 0 
	printk(KERN_INFO "%s: DCR: 0x%04x, DCR2: 0x%04x\n", dev_name(lp->device),
	       SONIC_READ(SONIC_DCR) & 0xffff, SONIC_READ(SONIC_DCR2) & 0xffff);
#endif

	
	SONIC_WRITE(SONIC_CMD, SONIC_CR_RST);

	SONIC_WRITE(SONIC_DCR, SONIC_DCR_EXBUS | SONIC_DCR_BMS |
	                       SONIC_DCR_RFT1  | SONIC_DCR_TFT0 |
	                       (lp->dma_bitmode ? SONIC_DCR_DW : 0));

	
	SONIC_WRITE(SONIC_DCR2, 0);

	
	SONIC_WRITE(SONIC_IMR, 0);
	SONIC_WRITE(SONIC_ISR, 0x7fff);

	
	mac_onboard_sonic_ethernet_addr(dev);

	
	return macsonic_init(dev);
}
コード例 #21
0
ファイル: sonic.c プロジェクト: dmgerman/original
/*
 * Initialize the SONIC ethernet controller.
 */
static int sonic_init(struct net_device *dev)
{
    unsigned int base_addr = dev->base_addr;
    unsigned int cmd;
    struct sonic_local *lp = (struct sonic_local *)dev->priv;
    unsigned int rra_start;
    unsigned int rra_end;
    int i;
    
    /*
     * put the Sonic into software-reset mode and
     * disable all interrupts
     */
    SONIC_WRITE(SONIC_ISR,0x7fff);
    SONIC_WRITE(SONIC_IMR,0);
    SONIC_WRITE(SONIC_CMD,SONIC_CR_RST);
  
    /*
     * clear software reset flag, disable receiver, clear and
     * enable interrupts, then completely initialize the SONIC
     */
    SONIC_WRITE(SONIC_CMD,0);
    SONIC_WRITE(SONIC_CMD,SONIC_CR_RXDIS);

    /*
     * initialize the receive resource area
     */
    if (sonic_debug > 2)
      printk ("sonic_init: initialize receive resource area\n");
    
    rra_start = lp->rra_laddr & 0xffff;
    rra_end   = (rra_start + (SONIC_NUM_RRS * sizeof(sonic_rr_t))) & 0xffff;
  
    for (i = 0; i < SONIC_NUM_RRS; i++) {
	lp->rra[i].rx_bufadr_l = (lp->rba_laddr + i * SONIC_RBSIZE) & 0xffff;
	lp->rra[i].rx_bufadr_h = (lp->rba_laddr + i * SONIC_RBSIZE) >> 16;
	lp->rra[i].rx_bufsize_l = SONIC_RBSIZE >> 1;
	lp->rra[i].rx_bufsize_h = 0;
    }

    /* initialize all RRA registers */
    SONIC_WRITE(SONIC_RSA,rra_start);
    SONIC_WRITE(SONIC_REA,rra_end);
    SONIC_WRITE(SONIC_RRP,rra_start);
    SONIC_WRITE(SONIC_RWP,rra_end);
    SONIC_WRITE(SONIC_URRA,lp->rra_laddr >> 16);
    SONIC_WRITE(SONIC_EOBC,(SONIC_RBSIZE-2) >> 1);
    
    lp->cur_rra = lp->rra_laddr + (SONIC_NUM_RRS-1) * sizeof(sonic_rr_t);

    /* load the resource pointers */
    if (sonic_debug > 3)
      printk("sonic_init: issueing RRRA command\n");
  
    SONIC_WRITE(SONIC_CMD,SONIC_CR_RRRA);
    i = 0;
    while (i++ < 100) {
	if (SONIC_READ(SONIC_CMD) & SONIC_CR_RRRA)
	  break;
    }
    
    if (sonic_debug > 2)
      printk("sonic_init: status=%x\n",SONIC_READ(SONIC_CMD));
    
    /*
     * Initialize the receive descriptors so that they
     * become a circular linked list, ie. let the last
     * descriptor point to the first again.
     */
    if (sonic_debug > 2)
      printk ("sonic_init: initialize receive descriptors\n");      
    for (i=0; i<SONIC_NUM_RDS; i++) {
	lp->rda[i].rx_status = 0;
	lp->rda[i].rx_pktlen = 0;
	lp->rda[i].rx_pktptr_l = 0;
	lp->rda[i].rx_pktptr_h = 0;
	lp->rda[i].rx_seqno = 0;
	lp->rda[i].in_use = 1;		       	
	lp->rda[i].link = lp->rda_laddr + (i+1) * sizeof (sonic_rd_t);
    }
    /* fix last descriptor */
    lp->rda[SONIC_NUM_RDS-1].link = lp->rda_laddr;
    lp->cur_rx = 0;
    SONIC_WRITE(SONIC_URDA,lp->rda_laddr >> 16);
    SONIC_WRITE(SONIC_CRDA,lp->rda_laddr & 0xffff);
    
    /* 
     * initialize transmit descriptors
     */
    if (sonic_debug > 2)
      printk ("sonic_init: initialize transmit descriptors\n");
    for (i = 0; i < SONIC_NUM_TDS; i++) {
	lp->tda[i].tx_status = 0;
	lp->tda[i].tx_config = 0;
	lp->tda[i].tx_pktsize = 0;
	lp->tda[i].tx_frag_count = 0;
	lp->tda[i].link = (lp->tda_laddr + (i+1) * sizeof (sonic_td_t)) | SONIC_END_OF_LINKS;
    }
    lp->tda[SONIC_NUM_TDS-1].link = (lp->tda_laddr & 0xffff) | SONIC_END_OF_LINKS;    

    SONIC_WRITE(SONIC_UTDA,lp->tda_laddr >> 16);
    SONIC_WRITE(SONIC_CTDA,lp->tda_laddr & 0xffff);
    lp->cur_tx = lp->dirty_tx = 0;
    
    /*
     * put our own address to CAM desc[0]
     */
    lp->cda.cam_desc[0].cam_cap0 = dev->dev_addr[1] << 8 | dev->dev_addr[0];
    lp->cda.cam_desc[0].cam_cap1 = dev->dev_addr[3] << 8 | dev->dev_addr[2];
    lp->cda.cam_desc[0].cam_cap2 = dev->dev_addr[5] << 8 | dev->dev_addr[4];
    lp->cda.cam_enable = 1;
    
    for (i=0; i < 16; i++)
      lp->cda.cam_desc[i].cam_entry_pointer = i;

    /*
     * initialize CAM registers
     */
    SONIC_WRITE(SONIC_CDP, lp->cda_laddr & 0xffff);
    SONIC_WRITE(SONIC_CDC,16);
    
    /*
     * load the CAM
     */
    SONIC_WRITE(SONIC_CMD,SONIC_CR_LCAM);
    
    i = 0;
    while (i++ < 100) {
	if (SONIC_READ(SONIC_ISR) & SONIC_INT_LCD)
	  break;
    }
    if (sonic_debug > 2) {
	printk("sonic_init: CMD=%x, ISR=%x\n",
	       SONIC_READ(SONIC_CMD),
	       SONIC_READ(SONIC_ISR));
    }

    /*
     * enable receiver, disable loopback
     * and enable all interrupts
     */
    SONIC_WRITE(SONIC_CMD,SONIC_CR_RXEN | SONIC_CR_STP);
    SONIC_WRITE(SONIC_RCR,SONIC_RCR_DEFAULT);
    SONIC_WRITE(SONIC_TCR,SONIC_TCR_DEFAULT);
    SONIC_WRITE(SONIC_ISR,0x7fff);
    SONIC_WRITE(SONIC_IMR,SONIC_IMR_DEFAULT);

    cmd = SONIC_READ(SONIC_CMD);
    if ((cmd & SONIC_CR_RXEN) == 0 ||
	(cmd & SONIC_CR_STP) == 0)
      printk("sonic_init: failed, status=%x\n",cmd);

    if (sonic_debug > 2)
      printk("sonic_init: new status=%x\n",SONIC_READ(SONIC_CMD));

    return(0);
}
コード例 #22
0
ファイル: sonic.c プロジェクト: CSCLOG/beaglebone
static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev)
{
    struct sonic_local *lp = netdev_priv(dev);
    dma_addr_t laddr;
    int length;
    int entry = lp->next_tx;

    if (sonic_debug > 2)
        printk("sonic_send_packet: skb=%p, dev=%p\n", skb, dev);

    length = skb->len;
    if (length < ETH_ZLEN) {
        if (skb_padto(skb, ETH_ZLEN))
            return NETDEV_TX_OK;
        length = ETH_ZLEN;
    }

    /*
     * Map the packet data into the logical DMA address space
     */

    laddr = dma_map_single(lp->device, skb->data, length, DMA_TO_DEVICE);
    if (!laddr) {
        printk(KERN_ERR "%s: failed to map tx DMA buffer.\n", dev->name);
        dev_kfree_skb(skb);
        return NETDEV_TX_BUSY;
    }

    sonic_tda_put(dev, entry, SONIC_TD_STATUS, 0);       /* clear status */
    sonic_tda_put(dev, entry, SONIC_TD_FRAG_COUNT, 1);   /* single fragment */
    sonic_tda_put(dev, entry, SONIC_TD_PKTSIZE, length); /* length of packet */
    sonic_tda_put(dev, entry, SONIC_TD_FRAG_PTR_L, laddr & 0xffff);
    sonic_tda_put(dev, entry, SONIC_TD_FRAG_PTR_H, laddr >> 16);
    sonic_tda_put(dev, entry, SONIC_TD_FRAG_SIZE, length);
    sonic_tda_put(dev, entry, SONIC_TD_LINK,
                  sonic_tda_get(dev, entry, SONIC_TD_LINK) | SONIC_EOL);

    /*
     * Must set tx_skb[entry] only after clearing status, and
     * before clearing EOL and before stopping queue
     */
    wmb();
    lp->tx_len[entry] = length;
    lp->tx_laddr[entry] = laddr;
    lp->tx_skb[entry] = skb;

    wmb();
    sonic_tda_put(dev, lp->eol_tx, SONIC_TD_LINK,
                  sonic_tda_get(dev, lp->eol_tx, SONIC_TD_LINK) & ~SONIC_EOL);
    lp->eol_tx = entry;

    lp->next_tx = (entry + 1) & SONIC_TDS_MASK;
    if (lp->tx_skb[lp->next_tx] != NULL) {
        /* The ring is full, the ISR has yet to process the next TD. */
        if (sonic_debug > 3)
            printk("%s: stopping queue\n", dev->name);
        netif_stop_queue(dev);
        /* after this packet, wait for ISR to free up some TDAs */
    } else netif_start_queue(dev);

    if (sonic_debug > 2)
        printk("sonic_send_packet: issuing Tx command\n");

    SONIC_WRITE(SONIC_CMD, SONIC_CR_TXP);

    return NETDEV_TX_OK;
}
コード例 #23
0
ファイル: sonic.c プロジェクト: dmgerman/original
/*
 * transmit packet
 */
static int sonic_send_packet(struct sk_buff *skb, struct net_device *dev)
{
    struct sonic_local *lp = (struct sonic_local *)dev->priv;
    unsigned int base_addr = dev->base_addr;
    unsigned int laddr;
    int entry,length;
    
    if (sonic_debug > 2)
      printk("sonic_send_packet: skb=%p, dev=%p\n",skb,dev);
  
    if (dev->tbusy) {
	int tickssofar = jiffies - dev->trans_start;

	/* If we get here, some higher level has decided we are broken.
	 There should really be a "kick me" function call instead. */
      
	if (sonic_debug > 1)
	  printk("sonic_send_packet: called with dev->tbusy = 1 !\n");
	
	if (tickssofar < 5)
	  return 1;
	
	printk("%s: transmit timed out.\n", dev->name);
	
	/* Try to restart the adaptor. */
	sonic_init(dev);
	dev->tbusy=0;
	dev->trans_start = jiffies;
    }

    /* 
     * Block a timer-based transmit from overlapping.  This could better be
     * done with atomic_swap(1, dev->tbusy), but set_bit() works as well.
     */
    if (test_and_set_bit(0, (void*)&dev->tbusy) != 0) {
	printk("%s: Transmitter access conflict.\n", dev->name);
	return 1;
    }
    
    /*
     * Map the packet data into the logical DMA address space
     */
    if ((laddr = vdma_alloc(PHYSADDR(skb->data),skb->len)) == ~0UL) {
	printk("%s: no VDMA entry for transmit available.\n",dev->name);
	dev_kfree_skb(skb);
	dev->tbusy = 0;
	return 1;
    }
    entry = lp->cur_tx & SONIC_TDS_MASK;    
    lp->tx_laddr[entry] = laddr;
    lp->tx_skb[entry] = skb;
    
    length = (skb->len < ETH_ZLEN) ? ETH_ZLEN : skb->len;
    flush_cache_all();
    
    /*
     * Setup the transmit descriptor and issue the transmit command.
     */
    lp->tda[entry].tx_status = 0;		/* clear status */
    lp->tda[entry].tx_frag_count = 1;		/* single fragment */
    lp->tda[entry].tx_pktsize = length;		/* length of packet */    
    lp->tda[entry].tx_frag_ptr_l = laddr & 0xffff;
    lp->tda[entry].tx_frag_ptr_h = laddr >> 16;
    lp->tda[entry].tx_frag_size  = length;
    lp->cur_tx++;
    lp->stats.tx_bytes += length;
    
    if (sonic_debug > 2)
      printk("sonic_send_packet: issueing Tx command\n");

    SONIC_WRITE(SONIC_CMD,SONIC_CR_TXP);

    dev->trans_start = jiffies;

    if (lp->cur_tx < lp->dirty_tx + SONIC_NUM_TDS)
      dev->tbusy = 0;
    else
      lp->tx_full = 1;
    
    return 0;
}
コード例 #24
0
ファイル: sonic.c プロジェクト: CSCLOG/beaglebone
/*
 * The typical workload of the driver:
 * Handle the network interface interrupts.
 */
static irqreturn_t sonic_interrupt(int irq, void *dev_id)
{
    struct net_device *dev = dev_id;
    struct sonic_local *lp = netdev_priv(dev);
    int status;

    if (!(status = SONIC_READ(SONIC_ISR) & SONIC_IMR_DEFAULT))
        return IRQ_NONE;

    do {
        if (status & SONIC_INT_PKTRX) {
            if (sonic_debug > 2)
                printk("%s: packet rx\n", dev->name);
            sonic_rx(dev);	/* got packet(s) */
            SONIC_WRITE(SONIC_ISR, SONIC_INT_PKTRX); /* clear the interrupt */
        }

        if (status & SONIC_INT_TXDN) {
            int entry = lp->cur_tx;
            int td_status;
            int freed_some = 0;

            /* At this point, cur_tx is the index of a TD that is one of:
             *   unallocated/freed                          (status set   & tx_skb[entry] clear)
             *   allocated and sent                         (status set   & tx_skb[entry] set  )
             *   allocated and not yet sent                 (status clear & tx_skb[entry] set  )
             *   still being allocated by sonic_send_packet (status clear & tx_skb[entry] clear)
             */

            if (sonic_debug > 2)
                printk("%s: tx done\n", dev->name);

            while (lp->tx_skb[entry] != NULL) {
                if ((td_status = sonic_tda_get(dev, entry, SONIC_TD_STATUS)) == 0)
                    break;

                if (td_status & 0x0001) {
                    lp->stats.tx_packets++;
                    lp->stats.tx_bytes += sonic_tda_get(dev, entry, SONIC_TD_PKTSIZE);
                } else {
                    lp->stats.tx_errors++;
                    if (td_status & 0x0642)
                        lp->stats.tx_aborted_errors++;
                    if (td_status & 0x0180)
                        lp->stats.tx_carrier_errors++;
                    if (td_status & 0x0020)
                        lp->stats.tx_window_errors++;
                    if (td_status & 0x0004)
                        lp->stats.tx_fifo_errors++;
                }

                /* We must free the original skb */
                dev_kfree_skb_irq(lp->tx_skb[entry]);
                lp->tx_skb[entry] = NULL;
                /* and unmap DMA buffer */
                dma_unmap_single(lp->device, lp->tx_laddr[entry], lp->tx_len[entry], DMA_TO_DEVICE);
                lp->tx_laddr[entry] = (dma_addr_t)0;
                freed_some = 1;

                if (sonic_tda_get(dev, entry, SONIC_TD_LINK) & SONIC_EOL) {
                    entry = (entry + 1) & SONIC_TDS_MASK;
                    break;
                }
                entry = (entry + 1) & SONIC_TDS_MASK;
            }

            if (freed_some || lp->tx_skb[entry] == NULL)
                netif_wake_queue(dev);  /* The ring is no longer full */
            lp->cur_tx = entry;
            SONIC_WRITE(SONIC_ISR, SONIC_INT_TXDN); /* clear the interrupt */
        }

        /*
         * check error conditions
         */
        if (status & SONIC_INT_RFO) {
            if (sonic_debug > 1)
                printk("%s: rx fifo overrun\n", dev->name);
            lp->stats.rx_fifo_errors++;
            SONIC_WRITE(SONIC_ISR, SONIC_INT_RFO); /* clear the interrupt */
        }
        if (status & SONIC_INT_RDE) {
            if (sonic_debug > 1)
                printk("%s: rx descriptors exhausted\n", dev->name);
            lp->stats.rx_dropped++;
            SONIC_WRITE(SONIC_ISR, SONIC_INT_RDE); /* clear the interrupt */
        }
        if (status & SONIC_INT_RBAE) {
            if (sonic_debug > 1)
                printk("%s: rx buffer area exceeded\n", dev->name);
            lp->stats.rx_dropped++;
            SONIC_WRITE(SONIC_ISR, SONIC_INT_RBAE); /* clear the interrupt */
        }

        /* counter overruns; all counters are 16bit wide */
        if (status & SONIC_INT_FAE) {
            lp->stats.rx_frame_errors += 65536;
            SONIC_WRITE(SONIC_ISR, SONIC_INT_FAE); /* clear the interrupt */
        }
        if (status & SONIC_INT_CRC) {
            lp->stats.rx_crc_errors += 65536;
            SONIC_WRITE(SONIC_ISR, SONIC_INT_CRC); /* clear the interrupt */
        }
        if (status & SONIC_INT_MP) {
            lp->stats.rx_missed_errors += 65536;
            SONIC_WRITE(SONIC_ISR, SONIC_INT_MP); /* clear the interrupt */
        }

        /* transmit error */
        if (status & SONIC_INT_TXER) {
            if ((SONIC_READ(SONIC_TCR) & SONIC_TCR_FU) && (sonic_debug > 2))
                printk(KERN_ERR "%s: tx fifo underrun\n", dev->name);
            SONIC_WRITE(SONIC_ISR, SONIC_INT_TXER); /* clear the interrupt */
        }

        /* bus retry */
        if (status & SONIC_INT_BR) {
            printk(KERN_ERR "%s: Bus retry occurred! Device interrupt disabled.\n",
                   dev->name);
            /* ... to help debug DMA problems causing endless interrupts. */
            /* Bounce the eth interface to turn on the interrupt again. */
            SONIC_WRITE(SONIC_IMR, 0);
            SONIC_WRITE(SONIC_ISR, SONIC_INT_BR); /* clear the interrupt */
        }

        /* load CAM done */
        if (status & SONIC_INT_LCD)
            SONIC_WRITE(SONIC_ISR, SONIC_INT_LCD); /* clear the interrupt */
    } while((status = SONIC_READ(SONIC_ISR) & SONIC_IMR_DEFAULT));
    return IRQ_HANDLED;
}