patch-2.3.21 linux/drivers/net/ncr885e.c

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diff -u --recursive --new-file v2.3.20/linux/drivers/net/ncr885e.c linux/drivers/net/ncr885e.c
@@ -0,0 +1,1458 @@
+/*
+ *  An Ethernet driver for the dual-function NCR 53C885 SCSI/Ethernet
+ *  controller.
+ *
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version
+ *  2 of the License, or (at your option) any later version.
+ *
+ */
+
+static const char *version =
+"ncr885e.c:v0.8 11/30/98 dan@synergymicro.com\n";
+
+#include <linux/config.h>
+
+#ifdef MODULE
+#ifdef MODVERSIONS
+#include <linux/modversions.h>
+#endif
+#include <linux/module.h>
+#include <linux/version.h>
+#else
+#define MOD_INC_USE_COUNT 
+#define MOD_DEC_USE_COUNT
+#endif
+
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/ptrace.h>
+#include <linux/malloc.h>
+#include <linux/netdevice.h>
+#include <linux/pci.h>
+#include <linux/malloc.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <asm/io.h>
+#include <asm/dbdma.h>
+#include <asm/uaccess.h>
+
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+
+#include "ncr885e.h"
+#include "ncr885_debug.h"
+
+static const char *chipname = "ncr885e";
+
+/* debugging flags */
+#if 0
+#define DEBUG_FUNC    0x0001
+#define DEBUG_PACKET  0x0002
+#define DEBUG_CMD     0x0004
+#define DEBUG_CHANNEL 0x0008
+#define DEBUG_INT     0x0010
+#define DEBUG_RX      0x0020
+#define DEBUG_TX      0x0040
+#define DEBUG_DMA     0x0080
+#define DEBUG_MAC     0x0100
+#define DEBUG_DRIVER  0x0200
+#define DEBUG_ALL     0x1fff
+#endif
+
+#ifdef DEBUG_NCR885E
+#define NCR885E_DEBUG   0
+#else
+#define NCR885E_DEBUG   0
+#endif
+
+/* The 885's Ethernet PCI device id. */
+#ifndef PCI_DEVICE_ID_NCR_53C885_ETHERNET
+#define PCI_DEVICE_ID_NCR_53C885_ETHERNET  0x0701
+#endif
+
+#define NR_RX_RING    8
+#define NR_TX_RING    8
+#define MAX_TX_ACTIVE (NR_TX_RING-1)
+#define NCMDS_TX      NR_TX_RING
+
+#define RX_BUFLEN     (ETH_FRAME_LEN + 8)
+#define TX_TIMEOUT    5*HZ
+
+#define NCR885E_TOTAL_SIZE 0xe0
+
+#define TXSR          (1<<6)   /* tx: xfer status written */
+#define TXABORT       (1<<7)   /* tx: abort */
+#define EOP           (1<<7)   /* rx: end of packet written to buffer */
+
+int ncr885e_debug = NCR885E_DEBUG;
+static int print_version = 0;
+
+struct ncr885e_private {
+
+	/* preserve a 1-1 marking with buffs */
+	struct dbdma_cmd *head;
+	struct dbdma_cmd *tx_cmds;
+	struct dbdma_cmd *rx_cmds;
+	struct dbdma_cmd *stop_cmd;
+
+	struct sk_buff *tx_skbufs[NR_TX_RING];
+	struct sk_buff *rx_skbufs[NR_RX_RING];
+
+	int rx_current;
+	int rx_dirty;
+
+	int tx_dirty;
+	int tx_current;
+
+	unsigned short tx_status[NR_TX_RING];
+
+	unsigned char tx_fullup;
+	unsigned char tx_active;
+  
+	struct net_device_stats  stats;
+
+	struct net_device *dev;
+
+	struct timer_list tx_timeout;
+	int timeout_active;
+
+	spinlock_t lock;
+};
+
+#ifdef MODULE
+static struct net_device *root_dev = NULL;
+#endif
+
+
+static int ncr885e_open( struct net_device *dev );
+static int ncr885e_close( struct net_device *dev );
+static void ncr885e_rx( struct net_device *dev );
+static void ncr885e_tx( struct net_device *dev );
+static int ncr885e_probe1( struct net_device *dev, unsigned long ioaddr,
+			   unsigned char irq );
+static int ncr885e_xmit_start( struct sk_buff *skb, struct net_device *dev );
+static struct net_device_stats *ncr885e_stats( struct net_device *dev );
+static void ncr885e_set_multicast( struct net_device *dev );
+static void ncr885e_config( struct net_device *dev );
+static int ncr885e_set_address( struct net_device *dev, void *addr );
+static void ncr885e_interrupt( int irq, void *dev_id, struct pt_regs *regs );
+static void show_dbdma_cmd( volatile struct dbdma_cmd *cmd );
+#if 0
+static int read_eeprom( unsigned int ioadddr, int location );
+#endif
+
+#ifdef NCR885E_DEBUG_MII
+static void show_mii( unsigned long ioaddr );
+static int read_mii( unsigned long ioaddr, int reg );
+static void write_mii( unsigned long ioaddr, int reg, int data );
+#endif /* NCR885E_DEBUG_MII */
+
+#define TX_RESET_FLAGS    (TX_CHANNEL_RUN|TX_CHANNEL_PAUSE|TX_CHANNEL_WAKE)
+#define RX_RESET_FLAGS    (RX_CHANNEL_RUN|RX_CHANNEL_PAUSE|RX_CHANNEL_WAKE)
+
+
+#if 0
+static int
+debug_ioctl( struct net_device *dev, struct ifreq *req, int cmd )
+{
+	unsigned long ioaddr = dev->base_addr;
+	struct ncr885e_private *sp = (struct ncr885e_private *) dev->priv;
+	struct ncr885e_private *data;
+	struct ncr885e_regs *regs;
+	unsigned long flags;
+
+	union {
+		struct ncr885e_regs dump;
+		struct ncr885e_private priv;    
+	} temp;
+
+	switch( cmd ) {
+
+		/* dump the rx ring status */
+	case NCR885E_GET_PRIV:
+
+		data = (struct ncr885e_private *) &req->ifr_data;    
+
+		if ( verify_area(VERIFY_WRITE, &req->ifr_data,
+				 sizeof( struct ncr885e_private )))
+			return -EFAULT;
+
+		memcpy((char *) &temp.priv, sp, sizeof( struct ncr885e_private ));
+		copy_to_user( data, (char *) &temp.priv, sizeof( struct ncr885e_private));
+		break;
+
+	case NCR885E_GET_REGS:
+
+		regs = (struct ncr885e_regs *) &req->ifr_data;
+  
+		if ( verify_area( VERIFY_WRITE, &req->ifr_data,
+				  sizeof( struct ncr885e_regs )))
+			return -EFAULT;
+
+		spin_lock_irqsave( &sp->lock, flags ); 
+
+		temp.dump.tx_status = inl( ioaddr + TX_CHANNEL_STATUS );
+		temp.dump.rx_status = inl( ioaddr + RX_CHANNEL_STATUS );
+		temp.dump.mac_config = inl( ioaddr + MAC_CONFIG );
+		temp.dump.tx_control = inl( ioaddr + TX_CHANNEL_CONTROL );
+		temp.dump.rx_control = inl( ioaddr + RX_CHANNEL_CONTROL );
+		temp.dump.tx_cmd_ptr = inl( ioaddr + TX_CMD_PTR_LO );
+		temp.dump.rx_cmd_ptr = inl( ioaddr + RX_CMD_PTR_LO );
+		temp.dump.int_status = inl( ioaddr + INTERRUPT_STATUS_REG );
+
+		spin_unlock_irqrestore( &sp->lock, flags );
+		copy_to_user( regs, (char *) &temp.dump, sizeof( struct ncr885e_regs ));
+
+		break;
+
+	default:
+		return -EOPNOTSUPP;
+	}
+	return 0;
+}
+#endif
+
+/*  Enable interrupts on the 53C885 */
+static inline void
+ncr885e_enable( struct net_device *dev )
+
+{
+	unsigned long ioaddr = dev->base_addr;
+	unsigned short reg;
+
+	reg = inw(ioaddr + INTERRUPT_ENABLE);
+	outw(reg | INTERRUPT_INTE, ioaddr + INTERRUPT_ENABLE);
+}
+
+/*  Disable interrupts on the 53c885 */
+static inline void
+ncr885e_disable( struct net_device *dev )
+
+{
+	unsigned long ioaddr = dev->base_addr;
+	unsigned short reg;
+
+	reg = inw( ioaddr + INTERRUPT_ENABLE );
+	outw( reg & ~INTERRUPT_INTE, ioaddr + INTERRUPT_ENABLE );
+}
+
+
+static inline void
+ncr885e_reset( struct net_device *dev )
+
+{
+	unsigned short reg;  
+	unsigned long cntl;
+	int i;
+	unsigned long ioaddr = dev->base_addr;
+
+	if (ncr885e_debug > 1)
+		printk( KERN_INFO "%s: Resetting 53C885...\n", dev->name );
+
+	/* disable interrupts on the 53C885 */
+	ncr885e_disable( dev );
+  
+	/* disable rx in the MAC */
+	reg = inw( ioaddr + MAC_CONFIG );
+	outw( reg & ~MAC_CONFIG_RXEN, ioaddr + MAC_CONFIG );
+  
+	for( i=0; i < 100; i++ ) {
+
+		if ( !(inw( ioaddr + MAC_CONFIG ) & MAC_CONFIG_RXEN ))
+			break;
+		udelay( 10 );
+	}
+  
+	reg = inw( ioaddr + MAC_CONFIG );
+	outw( reg | MAC_CONFIG_SRST, ioaddr + MAC_CONFIG );
+	outw( reg, ioaddr + MAC_CONFIG );
+
+	/* disable both rx and tx DBDMA channels */
+	outl( TX_DBDMA_ENABLE << 16, ioaddr + TX_CHANNEL_CONTROL );
+	outl( RX_DBDMA_ENABLE << 16, ioaddr + RX_CHANNEL_CONTROL );
+
+	for( i=0; i < 100; i++ ) {
+    
+		if ( !(inw( ioaddr + TX_CHANNEL_STATUS ) & TX_DBDMA_ENABLE ) &&
+		     !(inw( ioaddr + RX_CHANNEL_STATUS ) & RX_DBDMA_ENABLE ))
+			break;
+		udelay( 10 );
+	}
+
+	/* perform a "software reset" */
+	cntl = inl( ioaddr + DBDMA_CONTROL );
+	outl( cntl | DBDMA_SRST, ioaddr + DBDMA_CONTROL );
+
+	for( i=0; i < 100; i++ ) {
+  
+		if ( !(inl( ioaddr + DBDMA_CONTROL ) & DBDMA_SRST ))
+			break;
+		udelay( 10 );
+	}
+
+	/* books says that a software reset should be done to the MAC, as
+	   well.  This true??? */
+
+	if (ncr885e_debug > 3) 
+		printk( KERN_INFO "%s: reset complete\n", dev->name );
+
+}
+
+
+/*  configure the 53C885 chip.
+
+    The DBDMA command descriptors on the 53C885 can be programmed to
+    branch, interrupt or pause conditionally or always by using the
+    interrupt, branch and wait select registers.  */
+
+static void
+ncr885e_config( struct net_device *dev )
+
+{
+	unsigned long ioaddr = dev->base_addr;
+
+	if (ncr885e_debug > 3)
+		printk( KERN_INFO "%s: Configuring 53C885.\n", dev->name );
+
+	ncr885e_reset( dev );
+ 
+	/* The 53C885 can be programmed to perform conditional DBDMA
+	   branches, interrupts or waits.
+  
+	   Neither channel makes use of "wait", as it requires that the
+	   DBDMA engine to be restarted.  Don't go there.  The rx channel
+	   will branch upon the successful reception of a packet ('EOP' in
+	   the xfer_status field).  The branch address is to the STOP
+	   DBDMA command descriptor, which shuts down the rx channel until
+	   the interrupt is serviced.   */
+     
+	/* cause tx channel to stop after "status received" */
+	outl( 0, ioaddr + TX_INT_SELECT );
+	outl( (TX_WAIT_STAT_RECV << 16) | TX_WAIT_STAT_RECV, 
+	      ioaddr + TX_WAIT_SELECT );
+	outl( 0, ioaddr + TX_BRANCH_SELECT );
+
+	/* cause rx channel to branch to the STOP descriptor on "End-of-Packet" */
+#if 0
+	outl( (RX_INT_SELECT_EOP << 16) | RX_INT_SELECT_EOP,
+	      ioaddr + RX_INT_SELECT );
+#else
+	outl( 0, ioaddr + RX_INT_SELECT );
+#endif
+#if 0
+	outl( 0, ioaddr + RX_WAIT_SELECT );
+#else
+	outl( (RX_WAIT_SELECT_EOP << 16) | RX_WAIT_SELECT_EOP, 
+	      ioaddr + RX_WAIT_SELECT );
+#endif
+#if 1
+	outl( 0, ioaddr + RX_BRANCH_SELECT );
+#else
+	outl( (RX_BRANCH_SELECT_EOP << 16) | RX_BRANCH_SELECT_EOP,
+	      ioaddr + RX_BRANCH_SELECT );
+#endif
+
+	/* configure DBDMA */
+	outl( (DBDMA_BE | DBDMA_DPMRLE | DBDMA_TDPCE |
+	       DBDMA_DDPE | DBDMA_TDPE |
+	       (DBDMA_BURST_4 << DBDMA_TX_BST_SHIFT) |
+	       (DBDMA_BURST_4 << DBDMA_RX_BST_SHIFT) |
+	       (DBDMA_TX_ARBITRATION_DEFAULT) |
+	       (DBDMA_RX_ARBITRATION_DEFAULT)), ioaddr + DBDMA_CONTROL );
+
+	outl( 0, ioaddr + TX_THRESHOLD );
+
+	/* disable MAC loopback */
+	outl( (MAC_CONFIG_ITXA | MAC_CONFIG_RXEN | MAC_CONFIG_RETRYL |
+	       MAC_CONFIG_PADEN | (0x18 << 16)),
+	      ioaddr + MAC_CONFIG );
+
+	/* configure MAC */
+	outl( (MAC_CONFIG_ITXA | MAC_CONFIG_RXEN | MAC_CONFIG_RETRYL |
+	       MAC_CONFIG_PADEN | ( 0x18 << 16)), ioaddr + MAC_CONFIG );
+
+	outw( (0x1018), ioaddr + NBTOB_INTP_GAP );
+
+	/* clear and enable interrupts */
+	inw( ioaddr + INTERRUPT_CLEAR );
+	ncr885e_enable( dev );
+
+	/* and enable them in the chip */
+	outl( (INTERRUPT_INTE|INTERRUPT_TX_MASK|INTERRUPT_RX_MASK)<<16,
+	      ioaddr + INTERRUPT_ENABLE - 2);
+
+	if (ncr885e_debug > 3)
+		printk( KERN_INFO "%s: 53C885 config complete.\n", dev->name );
+
+	return;
+}
+
+
+
+/*
+   transmit interrupt  */
+
+static void
+ncr885e_tx( struct net_device *dev )
+
+{
+	struct ncr885e_private *sp = (struct ncr885e_private *) dev->priv;
+	volatile struct dbdma_cmd *cp, *dp;
+	unsigned short txbits, xfer;
+	int i;
+
+	del_timer( &sp->tx_timeout );
+
+	if (ncr885e_debug > 3)
+		printk( KERN_INFO "%s: ncr885e_tx: active=%d, dirty=%d, current=%d\n", 
+			dev->name, sp->tx_active, sp->tx_dirty, sp->tx_current );
+
+	sp->timeout_active = 0;
+
+	i = sp->tx_dirty;
+	cp = sp->tx_cmds + (i*3);
+	dp = cp+1;
+	sp->tx_active--;
+
+	xfer = inw( &dp->xfer_status );
+	txbits = inw( &sp->tx_status[i] );
+
+	if (ncr885e_debug > 4) {
+		show_dbdma_cmd( cp );
+		show_dbdma_cmd( dp );
+	}
+
+	/* get xmit result */
+	txbits = inw( &sp->tx_status[i] );
+
+	if (ncr885e_debug > 3)
+		printk( KERN_INFO "%s: tx xfer=%04x, txbits=%04x\n", dev->name,
+			xfer, txbits );
+
+	/* look for any channel status (?) */
+	if ( xfer ) {
+
+		dev_kfree_skb( sp->tx_skbufs[i] );
+		mark_bh( NET_BH );
+
+		if ( txbits & TX_STATUS_TXOK ) {
+			sp->stats.tx_packets++;
+			sp->stats.tx_bytes += inw( &cp->req_count );
+		}
+
+		/* dropped packets */
+		if ( txbits & (TX_STATUS_TDLC|TX_STATUS_TDEC) ) {
+			sp->stats.tx_dropped++;
+		}
+
+		/* add the collisions */
+		sp->stats.collisions += ( txbits & 0x04 );
+
+	}
+
+	dev->tbusy = 0;
+  
+	return;
+}
+
+/*  rx interrupt handling */
+static void
+ncr885e_rx( struct net_device *dev )
+
+{
+	struct ncr885e_private *sp = (struct ncr885e_private *) dev->priv;
+	volatile struct dbdma_cmd *cp;
+	struct sk_buff *skb;
+	int i, nb;
+	unsigned short status;
+	unsigned char *data, *stats;
+	unsigned long rxbits, ioaddr = dev->base_addr;
+
+	i = sp->rx_current;
+	cp = sp->rx_cmds + (i*2);
+
+	if (ncr885e_debug > 3)
+		printk( KERN_INFO "%s: ncr885e_rx dirty=%d, current=%d (cp@%p)\n",
+			dev->name, sp->rx_dirty, sp->rx_current, cp );
+
+	nb = inw( &cp->req_count ) - inw( &cp->res_count );
+	status = inw( &cp->xfer_status );
+
+	if (ncr885e_debug > 3)
+		printk( KERN_INFO "%s: (rx %d) bytes=%d, xfer_status=%04x\n", 
+			dev->name, i, nb, status );
+
+	if ( status ) {
+
+		skb = sp->rx_skbufs[i];
+		data = skb->data;
+		stats = data + nb - 3;
+		rxbits = (stats[0]|stats[1]<<8|stats[2]<<16);
+  
+		if (ncr885e_debug > 3)
+			printk( KERN_INFO "  rx_bits=%06lx\n", rxbits );
+
+		skb->dev = dev;
+		skb_put( skb, nb-3 );
+		skb->protocol = eth_type_trans( skb, dev );
+		netif_rx( skb );
+		sp->rx_skbufs[i] = 0;
+
+		if ( rxbits & RX_STATUS_RXOK ) {
+			sp->stats.rx_packets++;
+			sp->stats.rx_bytes += nb;
+		}
+
+		if ( rxbits & RX_STATUS_MCAST )
+			sp->stats.multicast++;
+
+	}
+
+	sp->rx_dirty = sp->rx_current;
+
+	if ( ++sp->rx_current >= NR_RX_RING )
+		sp->rx_current = 0;
+
+	/* fix up the one we just trashed */
+	cp = sp->rx_cmds + (sp->rx_dirty * 2);
+
+	skb = dev_alloc_skb( RX_BUFLEN + 2 );
+	if ( skb != 0 ) {
+		skb_reserve( skb, 2 );
+		sp->rx_skbufs[sp->rx_dirty] = skb;
+	}
+
+	if (ncr885e_debug > 2)
+		printk( KERN_INFO "%s: ncr885e_rx: using ring index %d, filling cp @ %p\n", 
+			dev->name, sp->rx_current, cp );
+  
+	outw( RX_BUFLEN, &cp->req_count );
+	outw( 0, &cp->res_count );
+	data = skb->data;
+	outl( virt_to_bus( data ), &cp->phy_addr );
+	outw( 0, &cp->xfer_status );
+
+	cp = sp->rx_cmds + (sp->rx_current * 2);
+
+	/* restart rx DMA */
+	outl( virt_to_bus( cp ), ioaddr + RX_CMD_PTR_LO );
+	outl( (RX_DBDMA_ENABLE << 16)|RX_CHANNEL_RUN,
+	      ioaddr + RX_CHANNEL_CONTROL );
+
+	return;
+}
+
+static void
+ncr885e_misc_ints( struct net_device *dev, unsigned short status )
+
+{
+	struct ncr885e_private *sp = (struct ncr885e_private *) dev->priv;
+	struct dbdma_cmd *cp;
+	unsigned long ioaddr = dev->base_addr;
+
+	if (ncr885e_debug > 1)
+		printk( KERN_INFO "miscellaneous interrupt handled; status=%02x\n", 
+			status );
+
+	/* various transmit errors */
+	if ( status & 
+	     (INTERRUPT_PPET | INTERRUPT_PBFT | INTERRUPT_IIDT) ) {
+
+		/* illegal instruction in tx dma */
+		if ( status & INTERRUPT_IIDT ) {
+
+			cp = (struct dbdma_cmd *) bus_to_virt( inl( ioaddr + TX_CMD_PTR_LO ));
+			printk( KERN_INFO "%s: tx illegal insn:\n", dev->name );
+			printk( KERN_INFO " tx DBDMA - cmd = %p, status = %04x\n", 
+				cp, inw( ioaddr + TX_CHANNEL_STATUS ));
+			printk( KERN_INFO " command = %04x, phy_addr=%08x, req_count=%04x\n",
+				inw( &cp->command ), inw( &cp->phy_addr ), inw( &cp->req_count ));
+		}
+
+		if ( status & INTERRUPT_PPET )
+			printk( KERN_INFO "%s: tx PCI parity error\n", dev->name );
+ 
+		if ( status & INTERRUPT_PBFT )
+			printk( KERN_INFO "%s: tx PCI bus fault\n", dev->name );
+	}
+
+	/* look for rx errors */
+	if ( status &
+	     (INTERRUPT_PPER | INTERRUPT_PBFR | INTERRUPT_IIDR)) {
+
+		/* illegal instruction in rx dma */
+		if ( status & INTERRUPT_IIDR ) {
+#if 0
+			cmd = inl( ioaddr + RX_CMD_PTR_LO );      
+#endif
+			printk( KERN_ERR "%s: rx illegal DMA instruction:\n", dev->name );
+			printk( KERN_ERR "    channel status=%04x,\n",
+				inl( ioaddr + RX_CHANNEL_STATUS ));
+#if 0
+			show_dbdma_cmd( bus_to_virt( inl( ioaddr + RX_CMD_PTR_LO )));
+			printk( KERN_ERR "    instr (%08x) %08x %08x %08x\n",
+				(int) cmd, cmd[0], cmd[1], cmd[2] );
+#endif
+		}
+
+		/* PCI parity error */
+		if ( status & INTERRUPT_PPER )
+			printk( KERN_INFO "%s: rx PCI parity error\n", dev->name );
+
+		if ( status & INTERRUPT_PBFR )
+			printk( KERN_INFO "%s: rx PCI bus fault\n", dev->name );
+
+		sp->stats.rx_errors++;
+	}
+
+	if ( status & INTERRUPT_WI ) {
+		printk( KERN_INFO "%s: link pulse\n", dev->name );
+	}
+
+	/* bump any counters */
+  
+
+	return;
+}
+
+static void
+ncr885e_interrupt( int irq, void *dev_id, struct pt_regs *regs )
+
+{
+	struct net_device  *dev = (struct net_device *) dev_id;
+	struct ncr885e_private *sp;
+	unsigned short status;
+	int ioaddr;
+
+	if ( dev == NULL ) {
+		printk( KERN_ERR "symba: Interrupt IRQ %d for unknown device\n", irq );
+		return;
+	}
+
+	ioaddr = dev->base_addr;
+	sp = (struct ncr885e_private *) dev->priv;
+	spin_lock( &sp->lock );
+  
+	if ( dev->interrupt ) {
+		printk( KERN_ERR "%s: Re-entering interrupt handler...\n", 
+			dev->name );
+	}
+
+	dev->interrupt = 1;
+	status = inw( ioaddr + INTERRUPT_CLEAR );
+
+	if (ncr885e_debug > 2)
+		printk( KERN_INFO "%s: 53C885 interrupt 0x%02x\n", dev->name, status );
+
+	/* handle non-tx and rx interrupts first */
+	if ( status & ~(INTERRUPT_DIT|INTERRUPT_DIR))
+		ncr885e_misc_ints( dev, status );
+
+	/* look for tx interrupt: more to transmit, DBDMA stopped, or tx done */
+	if ( ( status & INTERRUPT_DIT ) ) {
+
+		if (ncr885e_debug > 2)
+			printk( KERN_INFO "%s: tx int; int=%02x, chan stat=%02x\n", 
+				dev->name, status, inw( ioaddr + TX_CHANNEL_STATUS ));
+
+		/* turn off timer */
+		del_timer( &sp->tx_timeout );
+		sp->timeout_active = 0;
+
+		/* stop DMA */
+		outl( TX_DBDMA_ENABLE << 16, ioaddr + TX_CHANNEL_CONTROL );
+
+		ncr885e_tx( dev );
+	}
+
+	if ( status & INTERRUPT_DIR ) {
+
+		if ( ncr885e_debug > 2 )
+			printk( KERN_INFO "%s: rx interrupt; int=%02x, rx channel stat=%02x\n", 
+				dev->name, status, inw( ioaddr + RX_CHANNEL_STATUS ));
+
+		/* stop DMA */
+		outl( RX_DBDMA_ENABLE << 16, ioaddr + RX_CHANNEL_CONTROL );
+    
+		/* and handle the interrupt */
+		ncr885e_rx( dev );
+	}
+  
+	dev->interrupt = 0;
+	spin_unlock( &sp->lock );
+
+	return;
+}
+
+
+/*  doesn't set the address permanently, however... */
+static int 
+ncr885e_set_address( struct net_device *dev, void *addr )
+
+{
+	struct ncr885e_private *sp = (struct ncr885e_private *) dev->priv;
+	struct sockaddr *saddr = addr;
+	unsigned long  flags;
+	unsigned short reg[3];
+	unsigned char *ioaddr, *p;
+	int i;
+
+	memcpy( dev->dev_addr, saddr->sa_data, dev->addr_len );
+
+	p = (unsigned char *) dev->dev_addr;
+	printk( KERN_INFO "%s: setting new MAC address - ", dev->name );
+#if 0
+	for( p = (unsigned char *) dev->dev_addr, i=0; i < 6; i++, p++ ) 
+		printk("%c%2.2x", i ? ':' : ' ', *p );
+#endif
+
+
+	p = (unsigned char *) &reg;
+	for( i=0; i < 6; i++ )
+		p[i] = dev->dev_addr[i];
+
+#if 0
+	printk("%s: Setting new mac address - ", dev->name );
+	for( i=0; i < 6; i++ ) {
+		printk("%02x", i ? ':' : ' ', p[i] );
+	}
+
+	printk("\n");
+#endif
+
+	/* stop rx for the change */
+	outl( RX_DBDMA_ENABLE << 16, ioaddr + RX_CHANNEL_CONTROL );
+  
+	spin_lock_irqsave( &sp->lock, flags );
+
+	ioaddr = (unsigned char *) dev->base_addr;
+
+	for( i = 0; i < 3; i++ ) {
+		reg[i] = ((reg[i] & 0xff) << 8) | ((reg[i] >> 8) & 0xff);
+		printk("%04x ", reg[i] );
+		outw( reg[i], ioaddr + STATION_ADDRESS_0 + (i*2));
+	}
+	printk("\n");
+
+	spin_unlock_irqrestore( &sp->lock, flags );
+
+	/* restart rx */
+	outl((RX_DBDMA_ENABLE << 16)|RX_CHANNEL_RUN, 
+	     ioaddr + RX_CHANNEL_CONTROL );
+
+	return 0;
+}
+
+static void 
+ncr885e_tx_timeout( unsigned long data )
+
+{
+	struct net_device *dev = (struct net_device *) data;
+	struct ncr885e_private *sp = (struct ncr885e_private *) dev->priv;
+	unsigned long flags, ioaddr;
+	int i;
+  
+	save_flags( flags );
+	cli();
+
+	ioaddr = dev->base_addr;
+	sp->timeout_active = 0;
+	i = sp->tx_dirty;
+
+	/* if we weren't active, bail... */
+	if ( sp->tx_active == 0 ) {
+		printk( KERN_INFO "%s: ncr885e_timeout...tx not active!\n", dev->name );
+		goto out;
+	}
+
+	printk( KERN_ERR "%s: 53C885 timed out.  Resetting...\n", dev->name );
+
+	/* disable rx and tx DMA */
+	outl( (TX_DBDMA_ENABLE << 16), ioaddr + TX_CHANNEL_CONTROL );
+	outl( (RX_DBDMA_ENABLE << 16), ioaddr + RX_CHANNEL_CONTROL );
+
+	/* reset the chip */
+	ncr885e_config( dev );
+	ncr885e_enable( dev );
+
+	/* clear the wedged skb in the tx ring */
+	sp->tx_active = 0;
+	++sp->stats.tx_errors;
+  
+	if ( sp->tx_skbufs[i] ) {
+		dev_kfree_skb( sp->tx_skbufs[i] );
+		sp->tx_skbufs[i] = 0;
+	}
+
+	/* start anew from the beginning of the ring buffer (why not?) */
+	sp->tx_current = 0;
+	dev->tbusy = 0;
+	mark_bh( NET_BH );
+
+	/* restart rx dma */
+	outl( (RX_DBDMA_ENABLE << 16) | RX_CHANNEL_RUN,
+	      ioaddr + RX_CHANNEL_CONTROL );  
+ out:
+
+	restore_flags( flags );
+}
+
+static inline void
+ncr885e_set_timeout( struct net_device *dev )
+
+{
+	struct ncr885e_private *sp = (struct ncr885e_private *) dev->priv;
+	unsigned long flags;
+
+	save_flags(flags);
+	cli();
+
+	if ( sp->timeout_active )
+		del_timer( &sp->tx_timeout );
+
+	sp->tx_timeout.expires = jiffies + TX_TIMEOUT;
+	sp->tx_timeout.function = ncr885e_tx_timeout;
+	sp->tx_timeout.data = (unsigned long) dev;
+	add_timer( &sp->tx_timeout );
+	sp->timeout_active = 1;
+	restore_flags( flags );
+}
+
+
+/*
+ *  The goal is to set up DBDMA such that the rx ring contains only
+ *  one DMA descriptor per ring element and the tx ring has two (using
+ *  the cool features of branch- and wait-select.  However, I'm not sure
+ *  if it's possible.  For now, we plod through it with 3 descriptors
+ *  for tx, and two for rx.
+ */
+
+static int
+ncr885e_open( struct net_device *dev )
+
+{
+	struct ncr885e_private *sp = (struct ncr885e_private *) dev->priv;
+	unsigned long ioaddr = dev->base_addr;
+	struct sk_buff *skb;
+	int i, size;
+	char *data;
+	struct dbdma_cmd *cp;
+	unsigned long flags;
+
+	/* allocate enough space for the tx and rx rings and a STOP descriptor */  
+	size = (sizeof( struct dbdma_cmd ) *
+		((NR_TX_RING * 3) + (NR_RX_RING * 2) + 1));
+
+	cp = kmalloc( size, GFP_KERNEL );
+
+	if ( cp == 0 ) {
+		printk( KERN_ERR "Insufficient memory (%d bytes) for DBDMA\n", size );
+		return -ENOMEM;
+	}
+
+	spin_lock_init( &sp->lock );
+	spin_lock_irqsave( &sp->lock, flags );
+
+	memset((char *) cp, 0, size );
+	sp->head = cp;
+
+	sp->stop_cmd = cp;
+	outl( DBDMA_STOP, &cp->command );
+  
+	sp->rx_cmds = ++cp;
+
+	for( i = 0; i < NR_RX_RING; i++ ) {
+
+		cp = sp->rx_cmds + (i*2);
+		skb = dev_alloc_skb( RX_BUFLEN + 2 );
+
+		/* if there is insufficient memory, make this last ring use a 
+		   static buffer and leave the loop with that skb as final one */
+		if ( skb == 0 ) {
+			printk( KERN_ERR "%s: insufficient memory for rx ring buffer\n",
+				dev->name );
+			break;
+		}
+
+		skb_reserve( skb, 2 );
+		sp->rx_skbufs[i] = skb;
+		data = skb->data;
+
+		/* The DMA commands here are done such that an EOP is the only
+		   way that we should get an interrupt.  This means that we could
+		   fill more than one skbuff before getting the interrupt at EOP. */
+
+		/* Handle rx DMA such that it always interrupts.... */
+		outw( (INPUT_MORE|INTR_ALWAYS), &cp->command );
+		outw( RX_BUFLEN, &cp->req_count );
+		outw( 0, &cp->res_count );
+		outl( virt_to_bus( data ), &cp->phy_addr );
+		outl( virt_to_bus( sp->stop_cmd ), &cp->cmd_dep );
+		outw( 0, &cp->xfer_status );
+#if 0
+		printk( KERN_INFO "rx at %p\n", cp );
+		show_dbdma_cmd( cp );
+#endif
+		++cp;
+
+		outw( DBDMA_STOP, &cp->command );
+
+	}
+
+	/* initialize to all rx buffers are available, fill limit is the end */
+	sp->rx_dirty = 0;
+	sp->rx_current = 0;
+
+	/* fill the tx ring */
+	sp->tx_cmds = cp+1;
+
+	for( i = 0; i < NR_TX_RING; i++ ) {
+
+		/* minimal setup for tx command */
+		cp = sp->tx_cmds + (i*3);
+		outw( OUTPUT_LAST, &cp->command );
+		if (ncr885e_debug > 3) {
+			printk( KERN_INFO "tx OUTPUT_LAST at %p\n", cp );
+			show_dbdma_cmd( cp );
+		}
+
+		/* full setup for the status cmd */
+		cp++;
+		outw( INPUT_LAST|INTR_ALWAYS|WAIT_IFCLR, &cp->command );
+		outl( virt_to_bus( &sp->tx_status[i] ), &cp->phy_addr );
+		outw( 2, &cp->req_count );
+		if ( ncr885e_debug > 3) {
+			printk( KERN_INFO "tx INPUT_LAST cmd at %p\n", cp );
+			show_dbdma_cmd( cp );
+		}
+
+		++cp;
+		outw( DBDMA_STOP, &cp->command );
+ 
+	}
+#if 0
+	/* chain the last tx DMA command to the STOP cmd */
+	outw((INPUT_LAST|INTR_ALWAYS|BR_ALWAYS), &cp->command );
+	outl( virt_to_bus( sp->stop_cmd ), &cp->cmd_dep );
+#endif
+	sp->tx_active = 0;
+	sp->tx_current = 0;
+	sp->tx_dirty = 0;
+
+	spin_unlock_irqrestore( &sp->lock, flags );
+
+	/* the order seems important here for some reason.  If the MPIC isn't
+	   enabled before the ethernet chip is enabled, shrapnel from the
+	   bootloader causes us to receive interrupts even though we've not 
+	   yet enabled the tx channel.  Go figure.  It'd be better to configure
+	   the chip in the probe1() routine, but then we don't see interrupts
+	   at all.  Everything looks all right on the logic analyzer, but... */
+
+	ncr885e_config( dev );
+
+	/* enable ethernet interrupts */
+	if ( request_irq( dev->irq, &ncr885e_interrupt, SA_SHIRQ, chipname, dev )) {
+		printk( KERN_ERR "%s: can't get irq %d\n", dev->name, dev->irq );
+		return -EAGAIN;
+	}
+
+	(void) inw( ioaddr + INTERRUPT_CLEAR );
+
+	ncr885e_enable( dev );
+
+	/* start rx DBDMA */
+	outl( virt_to_bus( sp->rx_cmds ), ioaddr + RX_CMD_PTR_LO );
+	outl( (RX_DBDMA_ENABLE << 16)|RX_CHANNEL_RUN,
+	      ioaddr + RX_CHANNEL_CONTROL );
+
+	dev->start = 1;
+	dev->tbusy = 0;
+	dev->interrupt = 0;
+
+	MOD_INC_USE_COUNT;
+
+	return 0;
+}
+
+static int
+ncr885e_xmit_start( struct sk_buff *skb, struct net_device *dev )
+
+{
+	struct ncr885e_private *sp = (struct ncr885e_private *) dev->priv;
+	volatile struct dbdma_cmd *cp, *dp;
+	unsigned long flags, ioaddr = dev->base_addr;
+	int len, next, fill, entry;
+
+	if ( ncr885e_debug > 3)
+		printk( KERN_INFO "%s: xmit_start len=%d, dirty=%d, current=%d, active=%d\n",
+			dev->name, skb->len, sp->tx_dirty, sp->tx_current, sp->tx_active );
+
+	spin_lock_irqsave( &sp->lock, flags );
+
+	/* find the free slot in the ring buffer */
+	fill = sp->tx_current;
+	next = fill + 1;
+
+	if ( next >= NR_TX_RING )
+		next = 0;
+
+	/* mark ourselves as busy, even if we have too many packets waiting */
+	dev->tbusy = 1;
+
+	/* see if it's necessary to defer this packet */
+	if ( sp->tx_active >= MAX_TX_ACTIVE ) {
+		spin_unlock_irqrestore( &sp->lock, flags );
+		return -1;
+	}
+
+	sp->tx_active++;  /* bump "active tx" count */
+	sp->tx_current = next;  /* and show that we've used this buffer */
+	sp->tx_dirty = fill;     /* and mark this one to get picked up */
+
+	len = skb->len;
+
+	if ( len > ETH_FRAME_LEN ) {
+		printk( KERN_DEBUG "%s: xmit frame too long (%d)\n", dev->name, len );
+		len = ETH_FRAME_LEN;
+	}  
+
+	/* get index into the tx DBDMA chain */
+	entry = fill * 3;
+	sp->tx_skbufs[fill] = skb;
+	cp = sp->tx_cmds + entry;
+	dp = cp + 1;
+
+	/* update the rest of the OUTPUT_MORE descriptor */
+	outw( len, &cp->req_count );
+	outl( virt_to_bus( skb->data ), &cp->phy_addr );
+	outw( 0, &cp->xfer_status );
+	outw( 0, &cp->res_count );
+
+	/* and finish off the INPUT_MORE */
+	outw( 0, &dp->xfer_status );
+	outw( 0, &dp->res_count );
+	sp->tx_status[fill] = 0;
+	outl( virt_to_bus( &sp->tx_status[fill] ), &dp->phy_addr );
+
+	if ( ncr885e_debug > 2 )
+		printk(KERN_INFO "%s: xmit_start: active %d, tx_current %d, tx_dirty %d\n",
+		       dev->name, sp->tx_active, sp->tx_current, sp->tx_dirty );
+
+	if ( ncr885e_debug > 4 ) {
+		show_dbdma_cmd( cp );
+		show_dbdma_cmd( dp );
+	}
+
+
+	/* restart the tx DMA engine */
+	outl( virt_to_bus( cp ), ioaddr + TX_CMD_PTR_LO );
+	outl( (TX_DBDMA_ENABLE << 16)|TX_CHANNEL_RUN, 
+	      ioaddr + TX_CHANNEL_CONTROL );
+
+	ncr885e_set_timeout( dev );
+
+	spin_unlock_irqrestore( &sp->lock, flags );
+	dev->trans_start = jiffies;
+
+	return 0;      
+}
+
+static int
+ncr885e_close(struct net_device *dev)
+
+{
+	int i;
+	struct ncr885e_private *np = (struct ncr885e_private *) dev->priv;
+	unsigned long ioaddr = dev->base_addr;
+
+	dev->start = 0;
+	dev->tbusy = 1;
+
+	spin_lock( &np->lock );
+
+	printk(KERN_INFO "%s: NCR885E Ethernet closing...\n", dev->name );
+
+	if (ncr885e_debug > 1)
+		printk(KERN_DEBUG "%s: Shutting down Ethernet chip\n", dev->name);
+
+	ncr885e_disable(dev);
+
+	del_timer(&np->tx_timeout);
+
+	/* flip off rx and tx */
+	outl( (RX_DBDMA_ENABLE << 16), ioaddr + RX_CHANNEL_CONTROL );
+	outl( (TX_DBDMA_ENABLE << 16), ioaddr + TX_CHANNEL_CONTROL );  
+
+	/* free up the IRQ */
+	free_irq( dev->irq, dev );
+
+	for( i = 0; i < NR_RX_RING; i++ ) {
+		if (np->rx_skbufs[i])
+			dev_kfree_skb( np->rx_skbufs[i] );
+		np->rx_skbufs[i] = 0;
+	}
+#if 0
+	for (i = 0; i < NR_TX_RING; i++) {
+		if (np->tx_skbufs[i])
+			dev_kfree_skb(np->tx_skbufs[i]);
+		np->tx_skbufs[i] = 0;
+	}
+#endif
+	spin_unlock( &np->lock );
+
+	kfree( np->head );
+
+	MOD_DEC_USE_COUNT;
+
+	return 0;
+}
+
+
+/*
+ *  multicast promiscuous mode isn't used here.  Allow code in the
+ *  IP stack to determine which multicast packets are good or bad....
+ *  (this avoids having to use the hash table registers)
+ */
+static void
+ncr885e_set_multicast( struct net_device *dev )
+
+{
+	int ioaddr = dev->base_addr;
+
+	if ( ncr885e_debug > 3 )
+		printk("%s: set_multicast: dev->flags = %x, AF=%04x\n", 
+		       dev->name, dev->flags, inw( ioaddr + ADDRESS_FILTER ));
+
+	if ( dev->flags & IFF_PROMISC ) {
+		printk( KERN_INFO "%s: Promiscuous mode enabled.\n", dev->name );
+		outw( ADDRESS_RPPRO, ioaddr + ADDRESS_FILTER );
+	}
+
+	/* accept all multicast packets without checking the mc_list.  */
+	else if ( dev->flags & IFF_ALLMULTI ) {
+		printk( KERN_INFO "%s: Enabling all multicast packets.\n", 
+			dev->name );
+		outw( ADDRESS_RPPRM, ioaddr + ADDRESS_FILTER );
+	}
+
+	/* enable broadcast rx */
+	else {
+		outw( ADDRESS_RPABC, ioaddr + ADDRESS_FILTER );
+	}  
+}
+
+static struct net_device_stats *
+ncr885e_stats( struct net_device *dev )
+
+{
+	struct ncr885e_private *np = (struct ncr885e_private *) dev->priv;
+
+	return &np->stats;
+}
+
+/*  By this function, we're certain that we have a 885 Ethernet controller
+ *  so we finish setting it up and wrap up all the required Linux ethernet
+ *  configuration.
+ */
+
+static int
+ncr885e_probe1( struct net_device *dev, unsigned long ioaddr, unsigned char irq )
+
+{
+	struct ncr885e_private *sp;
+	unsigned short station_addr[3], val;
+	unsigned char *p;
+	int  i;
+
+	dev = init_etherdev( dev, 0 );
+
+	/* construct private data for the 885 ethernet */
+	dev->priv = kmalloc( sizeof( struct ncr885e_private ), GFP_KERNEL );
+
+	if ( dev->priv == NULL )
+		return -ENOMEM;
+
+	sp = (struct ncr885e_private *) dev->priv;
+	memset( sp, 0, sizeof( struct ncr885e_private ));
+
+	/* snag the station address and display it */
+	for( i = 0; i < 3; i++ ) {
+		val = inw( ioaddr + STATION_ADDRESS_0 + (i*2));
+		station_addr[i] = ((val >> 8) & 0xff) | ((val << 8) & 0xff00);
+	}
+
+	printk( KERN_INFO "%s: %s at %08lx,", dev->name, chipname, ioaddr );
+
+	p = (unsigned char *) &station_addr;
+
+	for( i=0; i < 6; i++ ) {
+		dev->dev_addr[i] = *p;
+		printk("%c%2.2x", i ? ':' : ' ', dev->dev_addr[i] );
+		p++;
+	}
+
+	printk(", IRQ %d.\n", irq );
+
+	request_region( ioaddr, NCR885E_TOTAL_SIZE, dev->name );
+
+	/* set up a timer */
+	init_timer( &sp->tx_timeout );
+	sp->timeout_active = 0;
+
+	dev->base_addr = ioaddr;
+	dev->irq = irq;
+
+	ether_setup( dev );
+
+	/* everything else */
+	dev->open = ncr885e_open;
+	dev->stop = ncr885e_close;
+	dev->get_stats = ncr885e_stats;
+	dev->hard_start_xmit = ncr885e_xmit_start;
+	dev->set_multicast_list = ncr885e_set_multicast;
+	dev->set_mac_address = ncr885e_set_address;
+
+	return 0;
+}
+
+/*  Since the NCR 53C885 is a multi-function chip, I'm not worrying about
+ *  trying to get the the device(s) in slot order.  For our (Synergy's)
+ *  purpose, there's just a single 53C885 on the board and we don't 
+ *  worry about the rest.
+ */
+
+int __init ncr885e_probe( struct net_device *dev )
+{
+	struct pci_dev *pdev = NULL;
+	unsigned int ioaddr, chips = 0;
+	unsigned short cmd;
+	unsigned char irq, latency;
+
+	while(( pdev = pci_find_device( PCI_VENDOR_ID_NCR, 
+					PCI_DEVICE_ID_NCR_53C885_ETHERNET,
+					pdev )) != NULL ) {
+
+		if ( !print_version ) {
+			print_version++;
+			printk( KERN_INFO "%s", version );
+		}
+
+		/* Use I/O space */
+		pci_read_config_dword( pdev, PCI_BASE_ADDRESS_0, &ioaddr );
+		pci_read_config_byte( pdev, PCI_INTERRUPT_LINE, &irq );
+
+		ioaddr &= ~3;
+		/* Adjust around the Grackle... */
+#ifdef CONFIG_GEMINI
+		ioaddr |= 0xfe000000;
+#endif
+
+		if ( check_region( ioaddr, NCR885E_TOTAL_SIZE ))
+			continue;
+
+		/* finish off the probe */
+		if ( !(ncr885e_probe1( dev, ioaddr, irq ))) {
+
+			chips++;
+
+			/* Access is via I/O space, bus master enabled... */
+			pci_read_config_word( pdev, PCI_COMMAND, &cmd );
+
+			if ( !(cmd & PCI_COMMAND_MASTER) ) {
+				printk( KERN_INFO "  PCI master bit not set! Now setting.\n");
+				cmd |= PCI_COMMAND_MASTER;
+				pci_write_config_word( pdev, PCI_COMMAND, cmd );
+			}
+
+			if ( !(cmd & PCI_COMMAND_IO) ) {
+				printk( KERN_INFO "  Enabling I/O space.\n" );
+				cmd |= PCI_COMMAND_IO;
+				pci_write_config_word( pdev, PCI_COMMAND, cmd );
+			}
+
+			pci_read_config_byte( pdev, PCI_LATENCY_TIMER, &latency );
+
+			if ( latency < 10 ) {
+				printk( KERN_INFO "  PCI latency timer (CFLT) is unreasonably"
+					" low at %d.  Setting to 255.\n", latency );
+				pci_write_config_byte( pdev, PCI_LATENCY_TIMER, 255 );
+			}
+		}
+	}
+
+	if ( !chips )
+		return -ENODEV;
+	else
+		return 0;
+}
+
+/* debugging to peek at dma descriptors */
+static void
+show_dbdma_cmd( volatile struct dbdma_cmd *cmd )
+
+{
+	printk( KERN_INFO " cmd %04x, physaddr %08x, req_count %04x\n",
+		inw( &cmd->command ), inl( &cmd->phy_addr ), inw( &cmd->req_count ));
+	printk( KERN_INFO " res_count %04x, xfer_status %04x, branch %08x\n", 
+		inw( &cmd->res_count ), inw( &cmd->xfer_status ),inl( &cmd->cmd_dep ));
+}
+
+#if 0
+static int
+read_eeprom( unsigned int ioaddr, int location )
+
+{
+	int loop;
+	unsigned char val;
+
+	outb( (location & 0xff), ioaddr + EE_WORD_ADDR );
+
+	/* take spillover from location in control reg */
+	outb(EE_CONTROL_RND_READB | (location & (0x7<<8)), ioaddr + EE_CONTROL);
+
+	loop = 1000;
+	while( (inb( ioaddr + EE_STATUS) & EE_SEB) &&
+	       (loop > 0) ) {
+		udelay( 10 );
+		loop--;
+	}
+
+	if ( inb( ioaddr + EE_STATUS ) & EE_SEE ) {
+		printk("%s: Serial EEPROM read error\n", chipname);
+		val = 0xff;
+	}
+
+	else 
+		val = inb( ioaddr + EE_READ_DATA );
+
+	return (int) val;
+}
+#endif
+
+#ifdef NCR885E_DEBUG_MII
+static void
+show_mii( unsigned long ioaddr )
+
+{
+	int   phyctrl, phystat, phyadvert, phypartner, phyexpan;
+
+	phyctrl = read_mii( ioaddr, MII_AUTO_NEGOTIATION_CONTROL );
+	phystat = read_mii( ioaddr, MII_AUTO_NEGOTIATION_STATUS );
+	phyadvert = read_mii( ioaddr, MII_AUTO_NEGOTIATION_ADVERTISEMENT );
+	phypartner = read_mii( ioaddr, MII_AUTO_NEGOTIATION_LINK_PARTNER );
+	phyexpan = read_mii( ioaddr, MII_AUTO_NEGOTIATION_EXPANSION );
+
+	printk( KERN_INFO "PHY: advert=%d %s, partner=%s %s, link=%d, %s%s\n",
+		(phyadvert & MANATECH_100BASETX_FULL_DUPLEX ? 100 : 10),
+		(phyctrl & MANC_AUTO_NEGOTIATION_ENABLE ? "auto" : "fixed"),
+		(phypartner & MANLP_ACKNOWLEDGE ?
+		 (phypartner & MANATECH_100BASETX_FULL_DUPLEX ? "100" : "10") :
+		 "?"),
+		(phyexpan & MANE_LINK_PARTNER_AUTO_ABLE ? "auto" : "fixed"),
+		(phyctrl & MANC_PHY_SPEED_100 ? 100 : 10),
+		(phystat & MANS_LINK_STATUS ? "up" : "down"),
+		(phyexpan & MANE_PARALLEL_DETECTION_FAULT ? " PD-fault" : "" ));
+	return;
+}
+
+
+static int
+read_mii( unsigned long ioaddr, int reg )
+
+{
+	int    timeout;
+
+
+	timeout = 100000;
+
+	while( inw( ioaddr + MII_INDICATOR ) & MII_BUSY ) {
+
+		if ( timeout-- < 0 ) {
+			printk( KERN_INFO "Timed out waiting for MII\n" );
+			return -1;
+		}
+	}
+
+	outw( (1<<8) + reg, ioaddr + MII_ADDRESS );
+	outw( MIIM_RSTAT, ioaddr + MIIM_COMMAND );
+
+	timeout = 100000;
+	while( inw( ioaddr + MII_INDICATOR ) & MII_BUSY ) {
+		if ( timeout-- < 0 ) {
+			printk( KERN_INFO "Timed out waiting for MII\n" );
+			return -1;
+		}
+	}
+
+	return( inw( ioaddr + MII_READ_DATA ));
+}
+
+static void
+write_mii( unsigned long ioaddr, int reg, int data )
+
+{
+	int timeout=100000;
+
+	printk( KERN_INFO "MII indicator: %02x\n", inw( ioaddr + MII_INDICATOR ));
+
+	while( inw( ioaddr + MII_INDICATOR ) & MII_BUSY ) {
+		if ( timeout-- <= 0 ) {
+			printk( KERN_INFO "Timeout waiting to write to MII\n" );
+			return;
+		}
+		udelay( 10 );
+	}
+
+	outw( (1<<8) + reg, ioaddr + MII_ADDRESS );
+	outw( data, ioaddr + MII_WRITE_DATA );
+
+	return;
+}
+
+#endif /* NCR885E_DEBUG_MII */
+
+#ifdef MODULE
+#if defined(LINUX_VERSION_CODE) && LINUX_VERSION_CODE > 0x20118
+MODULE_AUTHOR("dan@synergymicro.com");
+MODULE_DESCRIPTION("Symbios 53C885 Ethernet driver");
+MODULE_PARM(debug, "i");
+#endif 
+
+static int debug = 1;
+
+int
+init_module(void)
+{
+	if ( debug >= 0)
+		ncr885e_debug = debug;
+
+	return ncr885e_probe( NULL );
+}
+
+void
+cleanup_module(void)
+{
+	struct ncr885e_private *np;
+
+	if ( root_dev ) {
+
+		unregister_netdev( root_dev );
+		np = (struct ncr885e_private *) root_dev->priv;
+		release_region( root_dev->base_addr, NCR885E_TOTAL_SIZE );
+		kfree( root_dev->priv );
+		root_dev = NULL;
+	}  
+}
+#endif /* MODULE */
+
+/*
+ * Local variables:
+ *  compile-command: "gcc -DMODULE -DMODVERSIONS -D__KERNEL__ -I../../include -Wall -Wstrict-prototypes -O6 -c symba.c"
+ * End:
+ */

FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)