1 files changed, 787 insertions, 0 deletions

diff --git a/drivers/net/ethernet/amd/a2065.c b/drivers/net/ethernet/amd/a2065.c
new file mode 100644
index 000000000..212fe72a1
--- /dev/null
+++ b/drivers/net/ethernet/amd/a2065.c
@@ -0,0 +1,787 @@
+/*
+ * Amiga Linux/68k A2065 Ethernet Driver
+ *
+ * (C) Copyright 1995-2003 by Geert Uytterhoeven <geert@linux-m68k.org>
+ *
+ * Fixes and tips by:
+ *	- Janos Farkas (CHEXUM@sparta.banki.hu)
+ *	- Jes Degn Soerensen (jds@kom.auc.dk)
+ *	- Matt Domsch (Matt_Domsch@dell.com)
+ *
+ * ----------------------------------------------------------------------------
+ *
+ * This program is based on
+ *
+ *	ariadne.?:	Amiga Linux/68k Ariadne Ethernet Driver
+ *			(C) Copyright 1995 by Geert Uytterhoeven,
+ *                                            Peter De Schrijver
+ *
+ *	lance.c:	An AMD LANCE ethernet driver for linux.
+ *			Written 1993-94 by Donald Becker.
+ *
+ *	Am79C960:	PCnet(tm)-ISA Single-Chip Ethernet Controller
+ *			Advanced Micro Devices
+ *			Publication #16907, Rev. B, Amendment/0, May 1994
+ *
+ * ----------------------------------------------------------------------------
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file COPYING in the main directory of the Linux
+ * distribution for more details.
+ *
+ * ----------------------------------------------------------------------------
+ *
+ * The A2065 is a Zorro-II board made by Commodore/Ameristar. It contains:
+ *
+ *	- an Am7990 Local Area Network Controller for Ethernet (LANCE) with
+ *	  both 10BASE-2 (thin coax) and AUI (DB-15) connectors
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+/*#define DEBUG*/
+/*#define TEST_HITS*/
+
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/module.h>
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/skbuff.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/crc32.h>
+#include <linux/zorro.h>
+#include <linux/bitops.h>
+
+#include <asm/byteorder.h>
+#include <asm/irq.h>
+#include <asm/amigaints.h>
+#include <asm/amigahw.h>
+
+#include "a2065.h"
+
+/* Transmit/Receive Ring Definitions */
+
+#define LANCE_LOG_TX_BUFFERS	(2)
+#define LANCE_LOG_RX_BUFFERS	(4)
+
+#define TX_RING_SIZE		(1 << LANCE_LOG_TX_BUFFERS)
+#define RX_RING_SIZE		(1 << LANCE_LOG_RX_BUFFERS)
+
+#define TX_RING_MOD_MASK	(TX_RING_SIZE - 1)
+#define RX_RING_MOD_MASK	(RX_RING_SIZE - 1)
+
+#define PKT_BUF_SIZE		(1544)
+#define RX_BUFF_SIZE            PKT_BUF_SIZE
+#define TX_BUFF_SIZE            PKT_BUF_SIZE
+
+/* Layout of the Lance's RAM Buffer */
+
+struct lance_init_block {
+	unsigned short mode;		/* Pre-set mode (reg. 15) */
+	unsigned char phys_addr[6];     /* Physical ethernet address */
+	unsigned filter[2];		/* Multicast filter. */
+
+	/* Receive and transmit ring base, along with extra bits. */
+	unsigned short rx_ptr;		/* receive descriptor addr */
+	unsigned short rx_len;		/* receive len and high addr */
+	unsigned short tx_ptr;		/* transmit descriptor addr */
+	unsigned short tx_len;		/* transmit len and high addr */
+
+	/* The Tx and Rx ring entries must aligned on 8-byte boundaries. */
+	struct lance_rx_desc brx_ring[RX_RING_SIZE];
+	struct lance_tx_desc btx_ring[TX_RING_SIZE];
+
+	char rx_buf[RX_RING_SIZE][RX_BUFF_SIZE];
+	char tx_buf[TX_RING_SIZE][TX_BUFF_SIZE];
+};
+
+/* Private Device Data */
+
+struct lance_private {
+	char *name;
+	volatile struct lance_regs *ll;
+	volatile struct lance_init_block *init_block;	    /* Hosts view */
+	volatile struct lance_init_block *lance_init_block; /* Lance view */
+
+	int rx_new, tx_new;
+	int rx_old, tx_old;
+
+	int lance_log_rx_bufs, lance_log_tx_bufs;
+	int rx_ring_mod_mask, tx_ring_mod_mask;
+
+	int tpe;		      /* cable-selection is TPE */
+	int auto_select;	      /* cable-selection by carrier */
+	unsigned short busmaster_regval;
+
+#ifdef CONFIG_SUNLANCE
+	struct Linux_SBus_DMA *ledma; /* if set this points to ledma and arch=4m */
+	int burst_sizes;	      /* ledma SBus burst sizes */
+#endif
+	struct timer_list         multicast_timer;
+	struct net_device	  *dev;
+};
+
+#define LANCE_ADDR(x) ((int)(x) & ~0xff000000)
+
+/* Load the CSR registers */
+static void load_csrs(struct lance_private *lp)
+{
+	volatile struct lance_regs *ll = lp->ll;
+	volatile struct lance_init_block *aib = lp->lance_init_block;
+	int leptr = LANCE_ADDR(aib);
+
+	ll->rap = LE_CSR1;
+	ll->rdp = (leptr & 0xFFFF);
+	ll->rap = LE_CSR2;
+	ll->rdp = leptr >> 16;
+	ll->rap = LE_CSR3;
+	ll->rdp = lp->busmaster_regval;
+
+	/* Point back to csr0 */
+	ll->rap = LE_CSR0;
+}
+
+/* Setup the Lance Rx and Tx rings */
+static void lance_init_ring(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_init_block *ib = lp->init_block;
+	volatile struct lance_init_block *aib = lp->lance_init_block;
+					/* for LANCE_ADDR computations */
+	int leptr;
+	int i;
+
+	/* Lock out other processes while setting up hardware */
+	netif_stop_queue(dev);
+	lp->rx_new = lp->tx_new = 0;
+	lp->rx_old = lp->tx_old = 0;
+
+	ib->mode = 0;
+
+	/* Copy the ethernet address to the lance init block
+	 * Note that on the sparc you need to swap the ethernet address.
+	 */
+	ib->phys_addr[0] = dev->dev_addr[1];
+	ib->phys_addr[1] = dev->dev_addr[0];
+	ib->phys_addr[2] = dev->dev_addr[3];
+	ib->phys_addr[3] = dev->dev_addr[2];
+	ib->phys_addr[4] = dev->dev_addr[5];
+	ib->phys_addr[5] = dev->dev_addr[4];
+
+	/* Setup the Tx ring entries */
+	netdev_dbg(dev, "TX rings:\n");
+	for (i = 0; i <= 1 << lp->lance_log_tx_bufs; i++) {
+		leptr = LANCE_ADDR(&aib->tx_buf[i][0]);
+		ib->btx_ring[i].tmd0      = leptr;
+		ib->btx_ring[i].tmd1_hadr = leptr >> 16;
+		ib->btx_ring[i].tmd1_bits = 0;
+		ib->btx_ring[i].length    = 0xf000; /* The ones required by tmd2 */
+		ib->btx_ring[i].misc      = 0;
+		if (i < 3)
+			netdev_dbg(dev, "%d: 0x%08x\n", i, leptr);
+	}
+
+	/* Setup the Rx ring entries */
+	netdev_dbg(dev, "RX rings:\n");
+	for (i = 0; i < 1 << lp->lance_log_rx_bufs; i++) {
+		leptr = LANCE_ADDR(&aib->rx_buf[i][0]);
+
+		ib->brx_ring[i].rmd0      = leptr;
+		ib->brx_ring[i].rmd1_hadr = leptr >> 16;
+		ib->brx_ring[i].rmd1_bits = LE_R1_OWN;
+		ib->brx_ring[i].length    = -RX_BUFF_SIZE | 0xf000;
+		ib->brx_ring[i].mblength  = 0;
+		if (i < 3)
+			netdev_dbg(dev, "%d: 0x%08x\n", i, leptr);
+	}
+
+	/* Setup the initialization block */
+
+	/* Setup rx descriptor pointer */
+	leptr = LANCE_ADDR(&aib->brx_ring);
+	ib->rx_len = (lp->lance_log_rx_bufs << 13) | (leptr >> 16);
+	ib->rx_ptr = leptr;
+	netdev_dbg(dev, "RX ptr: %08x\n", leptr);
+
+	/* Setup tx descriptor pointer */
+	leptr = LANCE_ADDR(&aib->btx_ring);
+	ib->tx_len = (lp->lance_log_tx_bufs << 13) | (leptr >> 16);
+	ib->tx_ptr = leptr;
+	netdev_dbg(dev, "TX ptr: %08x\n", leptr);
+
+	/* Clear the multicast filter */
+	ib->filter[0] = 0;
+	ib->filter[1] = 0;
+}
+
+static int init_restart_lance(struct lance_private *lp)
+{
+	volatile struct lance_regs *ll = lp->ll;
+	int i;
+
+	ll->rap = LE_CSR0;
+	ll->rdp = LE_C0_INIT;
+
+	/* Wait for the lance to complete initialization */
+	for (i = 0; (i < 100) && !(ll->rdp & (LE_C0_ERR | LE_C0_IDON)); i++)
+		barrier();
+	if ((i == 100) || (ll->rdp & LE_C0_ERR)) {
+		pr_err("unopened after %d ticks, csr0=%04x\n", i, ll->rdp);
+		return -EIO;
+	}
+
+	/* Clear IDON by writing a "1", enable interrupts and start lance */
+	ll->rdp = LE_C0_IDON;
+	ll->rdp = LE_C0_INEA | LE_C0_STRT;
+
+	return 0;
+}
+
+static int lance_rx(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_init_block *ib = lp->init_block;
+	volatile struct lance_regs *ll = lp->ll;
+	volatile struct lance_rx_desc *rd;
+	unsigned char bits;
+
+#ifdef TEST_HITS
+	int i;
+	char buf[RX_RING_SIZE + 1];
+
+	for (i = 0; i < RX_RING_SIZE; i++) {
+		char r1_own = ib->brx_ring[i].rmd1_bits & LE_R1_OWN;
+		if (i == lp->rx_new)
+			buf[i] = r1_own ? '_' : 'X';
+		else
+			buf[i] = r1_own ? '.' : '1';
+	}
+	buf[RX_RING_SIZE] = 0;
+
+	pr_debug("RxRing TestHits: [%s]\n", buf);
+#endif
+
+	ll->rdp = LE_C0_RINT | LE_C0_INEA;
+	for (rd = &ib->brx_ring[lp->rx_new];
+	     !((bits = rd->rmd1_bits) & LE_R1_OWN);
+	     rd = &ib->brx_ring[lp->rx_new]) {
+
+		/* We got an incomplete frame? */
+		if ((bits & LE_R1_POK) != LE_R1_POK) {
+			dev->stats.rx_over_errors++;
+			dev->stats.rx_errors++;
+			continue;
+		} else if (bits & LE_R1_ERR) {
+			/* Count only the end frame as a rx error,
+			 * not the beginning
+			 */
+			if (bits & LE_R1_BUF)
+				dev->stats.rx_fifo_errors++;
+			if (bits & LE_R1_CRC)
+				dev->stats.rx_crc_errors++;
+			if (bits & LE_R1_OFL)
+				dev->stats.rx_over_errors++;
+			if (bits & LE_R1_FRA)
+				dev->stats.rx_frame_errors++;
+			if (bits & LE_R1_EOP)
+				dev->stats.rx_errors++;
+		} else {
+			int len = (rd->mblength & 0xfff) - 4;
+			struct sk_buff *skb = netdev_alloc_skb(dev, len + 2);
+
+			if (!skb) {
+				dev->stats.rx_dropped++;
+				rd->mblength = 0;
+				rd->rmd1_bits = LE_R1_OWN;
+				lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
+				return 0;
+			}
+
+			skb_reserve(skb, 2);		/* 16 byte align */
+			skb_put(skb, len);		/* make room */
+			skb_copy_to_linear_data(skb,
+				 (unsigned char *)&ib->rx_buf[lp->rx_new][0],
+				 len);
+			skb->protocol = eth_type_trans(skb, dev);
+			netif_rx(skb);
+			dev->stats.rx_packets++;
+			dev->stats.rx_bytes += len;
+		}
+
+		/* Return the packet to the pool */
+		rd->mblength = 0;
+		rd->rmd1_bits = LE_R1_OWN;
+		lp->rx_new = (lp->rx_new + 1) & lp->rx_ring_mod_mask;
+	}
+	return 0;
+}
+
+static int lance_tx(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_init_block *ib = lp->init_block;
+	volatile struct lance_regs *ll = lp->ll;
+	volatile struct lance_tx_desc *td;
+	int i, j;
+	int status;
+
+	/* csr0 is 2f3 */
+	ll->rdp = LE_C0_TINT | LE_C0_INEA;
+	/* csr0 is 73 */
+
+	j = lp->tx_old;
+	for (i = j; i != lp->tx_new; i = j) {
+		td = &ib->btx_ring[i];
+
+		/* If we hit a packet not owned by us, stop */
+		if (td->tmd1_bits & LE_T1_OWN)
+			break;
+
+		if (td->tmd1_bits & LE_T1_ERR) {
+			status = td->misc;
+
+			dev->stats.tx_errors++;
+			if (status & LE_T3_RTY)
+				dev->stats.tx_aborted_errors++;
+			if (status & LE_T3_LCOL)
+				dev->stats.tx_window_errors++;
+
+			if (status & LE_T3_CLOS) {
+				dev->stats.tx_carrier_errors++;
+				if (lp->auto_select) {
+					lp->tpe = 1 - lp->tpe;
+					netdev_err(dev, "Carrier Lost, trying %s\n",
+						   lp->tpe ? "TPE" : "AUI");
+					/* Stop the lance */
+					ll->rap = LE_CSR0;
+					ll->rdp = LE_C0_STOP;
+					lance_init_ring(dev);
+					load_csrs(lp);
+					init_restart_lance(lp);
+					return 0;
+				}
+			}
+
+			/* buffer errors and underflows turn off
+			 * the transmitter, so restart the adapter
+			 */
+			if (status & (LE_T3_BUF | LE_T3_UFL)) {
+				dev->stats.tx_fifo_errors++;
+
+				netdev_err(dev, "Tx: ERR_BUF|ERR_UFL, restarting\n");
+				/* Stop the lance */
+				ll->rap = LE_CSR0;
+				ll->rdp = LE_C0_STOP;
+				lance_init_ring(dev);
+				load_csrs(lp);
+				init_restart_lance(lp);
+				return 0;
+			}
+		} else if ((td->tmd1_bits & LE_T1_POK) == LE_T1_POK) {
+			/* So we don't count the packet more than once. */
+			td->tmd1_bits &= ~(LE_T1_POK);
+
+			/* One collision before packet was sent. */
+			if (td->tmd1_bits & LE_T1_EONE)
+				dev->stats.collisions++;
+
+			/* More than one collision, be optimistic. */
+			if (td->tmd1_bits & LE_T1_EMORE)
+				dev->stats.collisions += 2;
+
+			dev->stats.tx_packets++;
+		}
+
+		j = (j + 1) & lp->tx_ring_mod_mask;
+	}
+	lp->tx_old = j;
+	ll->rdp = LE_C0_TINT | LE_C0_INEA;
+	return 0;
+}
+
+static int lance_tx_buffs_avail(struct lance_private *lp)
+{
+	if (lp->tx_old <= lp->tx_new)
+		return lp->tx_old + lp->tx_ring_mod_mask - lp->tx_new;
+	return lp->tx_old - lp->tx_new - 1;
+}
+
+static irqreturn_t lance_interrupt(int irq, void *dev_id)
+{
+	struct net_device *dev = dev_id;
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_regs *ll = lp->ll;
+	int csr0;
+
+	ll->rap = LE_CSR0;		/* LANCE Controller Status */
+	csr0 = ll->rdp;
+
+	if (!(csr0 & LE_C0_INTR))	/* Check if any interrupt has */
+		return IRQ_NONE;	/* been generated by the Lance. */
+
+	/* Acknowledge all the interrupt sources ASAP */
+	ll->rdp = csr0 & ~(LE_C0_INEA | LE_C0_TDMD | LE_C0_STOP | LE_C0_STRT |
+			   LE_C0_INIT);
+
+	if (csr0 & LE_C0_ERR) {
+		/* Clear the error condition */
+		ll->rdp = LE_C0_BABL | LE_C0_ERR | LE_C0_MISS | LE_C0_INEA;
+	}
+
+	if (csr0 & LE_C0_RINT)
+		lance_rx(dev);
+
+	if (csr0 & LE_C0_TINT)
+		lance_tx(dev);
+
+	/* Log misc errors. */
+	if (csr0 & LE_C0_BABL)
+		dev->stats.tx_errors++;       /* Tx babble. */
+	if (csr0 & LE_C0_MISS)
+		dev->stats.rx_errors++;       /* Missed a Rx frame. */
+	if (csr0 & LE_C0_MERR) {
+		netdev_err(dev, "Bus master arbitration failure, status %04x\n",
+			   csr0);
+		/* Restart the chip. */
+		ll->rdp = LE_C0_STRT;
+	}
+
+	if (netif_queue_stopped(dev) && lance_tx_buffs_avail(lp) > 0)
+		netif_wake_queue(dev);
+
+	ll->rap = LE_CSR0;
+	ll->rdp = (LE_C0_BABL | LE_C0_CERR | LE_C0_MISS | LE_C0_MERR |
+		   LE_C0_IDON | LE_C0_INEA);
+	return IRQ_HANDLED;
+}
+
+static int lance_open(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_regs *ll = lp->ll;
+	int ret;
+
+	/* Stop the Lance */
+	ll->rap = LE_CSR0;
+	ll->rdp = LE_C0_STOP;
+
+	/* Install the Interrupt handler */
+	ret = request_irq(IRQ_AMIGA_PORTS, lance_interrupt, IRQF_SHARED,
+			  dev->name, dev);
+	if (ret)
+		return ret;
+
+	load_csrs(lp);
+	lance_init_ring(dev);
+
+	netif_start_queue(dev);
+
+	return init_restart_lance(lp);
+}
+
+static int lance_close(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_regs *ll = lp->ll;
+
+	netif_stop_queue(dev);
+	del_timer_sync(&lp->multicast_timer);
+
+	/* Stop the card */
+	ll->rap = LE_CSR0;
+	ll->rdp = LE_C0_STOP;
+
+	free_irq(IRQ_AMIGA_PORTS, dev);
+	return 0;
+}
+
+static inline int lance_reset(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_regs *ll = lp->ll;
+	int status;
+
+	/* Stop the lance */
+	ll->rap = LE_CSR0;
+	ll->rdp = LE_C0_STOP;
+
+	load_csrs(lp);
+
+	lance_init_ring(dev);
+	netif_trans_update(dev); /* prevent tx timeout */
+	netif_start_queue(dev);
+
+	status = init_restart_lance(lp);
+	netdev_dbg(dev, "Lance restart=%d\n", status);
+
+	return status;
+}
+
+static void lance_tx_timeout(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_regs *ll = lp->ll;
+
+	netdev_err(dev, "transmit timed out, status %04x, reset\n", ll->rdp);
+	lance_reset(dev);
+	netif_wake_queue(dev);
+}
+
+static netdev_tx_t lance_start_xmit(struct sk_buff *skb,
+				    struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_regs *ll = lp->ll;
+	volatile struct lance_init_block *ib = lp->init_block;
+	int entry, skblen;
+	int status = NETDEV_TX_OK;
+	unsigned long flags;
+
+	if (skb_padto(skb, ETH_ZLEN))
+		return NETDEV_TX_OK;
+	skblen = max_t(unsigned, skb->len, ETH_ZLEN);
+
+	local_irq_save(flags);
+
+	if (!lance_tx_buffs_avail(lp))
+		goto out_free;
+
+#ifdef DEBUG
+	/* dump the packet */
+	print_hex_dump(KERN_DEBUG, "skb->data: ", DUMP_PREFIX_NONE,
+		       16, 1, skb->data, 64, true);
+#endif
+	entry = lp->tx_new & lp->tx_ring_mod_mask;
+	ib->btx_ring[entry].length = (-skblen) | 0xf000;
+	ib->btx_ring[entry].misc = 0;
+
+	skb_copy_from_linear_data(skb, (void *)&ib->tx_buf[entry][0], skblen);
+
+	/* Now, give the packet to the lance */
+	ib->btx_ring[entry].tmd1_bits = (LE_T1_POK | LE_T1_OWN);
+	lp->tx_new = (lp->tx_new+1) & lp->tx_ring_mod_mask;
+	dev->stats.tx_bytes += skblen;
+
+	if (lance_tx_buffs_avail(lp) <= 0)
+		netif_stop_queue(dev);
+
+	/* Kick the lance: transmit now */
+	ll->rdp = LE_C0_INEA | LE_C0_TDMD;
+ out_free:
+	dev_kfree_skb(skb);
+
+	local_irq_restore(flags);
+
+	return status;
+}
+
+/* taken from the depca driver */
+static void lance_load_multicast(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_init_block *ib = lp->init_block;
+	volatile u16 *mcast_table = (u16 *)&ib->filter;
+	struct netdev_hw_addr *ha;
+	u32 crc;
+
+	/* set all multicast bits */
+	if (dev->flags & IFF_ALLMULTI) {
+		ib->filter[0] = 0xffffffff;
+		ib->filter[1] = 0xffffffff;
+		return;
+	}
+	/* clear the multicast filter */
+	ib->filter[0] = 0;
+	ib->filter[1] = 0;
+
+	/* Add addresses */
+	netdev_for_each_mc_addr(ha, dev) {
+		crc = ether_crc_le(6, ha->addr);
+		crc = crc >> 26;
+		mcast_table[crc >> 4] |= 1 << (crc & 0xf);
+	}
+}
+
+static void lance_set_multicast(struct net_device *dev)
+{
+	struct lance_private *lp = netdev_priv(dev);
+	volatile struct lance_init_block *ib = lp->init_block;
+	volatile struct lance_regs *ll = lp->ll;
+
+	if (!netif_running(dev))
+		return;
+
+	if (lp->tx_old != lp->tx_new) {
+		mod_timer(&lp->multicast_timer, jiffies + 4);
+		netif_wake_queue(dev);
+		return;
+	}
+
+	netif_stop_queue(dev);
+
+	ll->rap = LE_CSR0;
+	ll->rdp = LE_C0_STOP;
+	lance_init_ring(dev);
+
+	if (dev->flags & IFF_PROMISC) {
+		ib->mode |= LE_MO_PROM;
+	} else {
+		ib->mode &= ~LE_MO_PROM;
+		lance_load_multicast(dev);
+	}
+	load_csrs(lp);
+	init_restart_lance(lp);
+	netif_wake_queue(dev);
+}
+
+static void lance_set_multicast_retry(struct timer_list *t)
+{
+	struct lance_private *lp = from_timer(lp, t, multicast_timer);
+
+	lance_set_multicast(lp->dev);
+}
+
+static int a2065_init_one(struct zorro_dev *z,
+			  const struct zorro_device_id *ent);
+static void a2065_remove_one(struct zorro_dev *z);
+
+
+static const struct zorro_device_id a2065_zorro_tbl[] = {
+	{ ZORRO_PROD_CBM_A2065_1 },
+	{ ZORRO_PROD_CBM_A2065_2 },
+	{ ZORRO_PROD_AMERISTAR_A2065 },
+	{ 0 }
+};
+MODULE_DEVICE_TABLE(zorro, a2065_zorro_tbl);
+
+static struct zorro_driver a2065_driver = {
+	.name		= "a2065",
+	.id_table	= a2065_zorro_tbl,
+	.probe		= a2065_init_one,
+	.remove		= a2065_remove_one,
+};
+
+static const struct net_device_ops lance_netdev_ops = {
+	.ndo_open		= lance_open,
+	.ndo_stop		= lance_close,
+	.ndo_start_xmit		= lance_start_xmit,
+	.ndo_tx_timeout		= lance_tx_timeout,
+	.ndo_set_rx_mode	= lance_set_multicast,
+	.ndo_validate_addr	= eth_validate_addr,
+	.ndo_set_mac_address	= eth_mac_addr,
+};
+
+static int a2065_init_one(struct zorro_dev *z,
+			  const struct zorro_device_id *ent)
+{
+	struct net_device *dev;
+	struct lance_private *priv;
+	unsigned long board = z->resource.start;
+	unsigned long base_addr = board + A2065_LANCE;
+	unsigned long mem_start = board + A2065_RAM;
+	struct resource *r1, *r2;
+	u32 serial;
+	int err;
+
+	r1 = request_mem_region(base_addr, sizeof(struct lance_regs),
+				"Am7990");
+	if (!r1)
+		return -EBUSY;
+	r2 = request_mem_region(mem_start, A2065_RAM_SIZE, "RAM");
+	if (!r2) {
+		release_mem_region(base_addr, sizeof(struct lance_regs));
+		return -EBUSY;
+	}
+
+	dev = alloc_etherdev(sizeof(struct lance_private));
+	if (dev == NULL) {
+		release_mem_region(base_addr, sizeof(struct lance_regs));
+		release_mem_region(mem_start, A2065_RAM_SIZE);
+		return -ENOMEM;
+	}
+
+	priv = netdev_priv(dev);
+
+	r1->name = dev->name;
+	r2->name = dev->name;
+
+	serial = be32_to_cpu(z->rom.er_SerialNumber);
+	dev->dev_addr[0] = 0x00;
+	if (z->id != ZORRO_PROD_AMERISTAR_A2065) {	/* Commodore */
+		dev->dev_addr[1] = 0x80;
+		dev->dev_addr[2] = 0x10;
+	} else {					/* Ameristar */
+		dev->dev_addr[1] = 0x00;
+		dev->dev_addr[2] = 0x9f;
+	}
+	dev->dev_addr[3] = (serial >> 16) & 0xff;
+	dev->dev_addr[4] = (serial >> 8) & 0xff;
+	dev->dev_addr[5] = serial & 0xff;
+	dev->base_addr = (unsigned long)ZTWO_VADDR(base_addr);
+	dev->mem_start = (unsigned long)ZTWO_VADDR(mem_start);
+	dev->mem_end = dev->mem_start + A2065_RAM_SIZE;
+
+	priv->ll = (volatile struct lance_regs *)dev->base_addr;
+	priv->init_block = (struct lance_init_block *)dev->mem_start;
+	priv->lance_init_block = (struct lance_init_block *)A2065_RAM;
+	priv->auto_select = 0;
+	priv->busmaster_regval = LE_C3_BSWP;
+
+	priv->lance_log_rx_bufs = LANCE_LOG_RX_BUFFERS;
+	priv->lance_log_tx_bufs = LANCE_LOG_TX_BUFFERS;
+	priv->rx_ring_mod_mask = RX_RING_MOD_MASK;
+	priv->tx_ring_mod_mask = TX_RING_MOD_MASK;
+	priv->dev = dev;
+
+	dev->netdev_ops = &lance_netdev_ops;
+	dev->watchdog_timeo = 5*HZ;
+	dev->dma = 0;
+
+	timer_setup(&priv->multicast_timer, lance_set_multicast_retry, 0);
+
+	err = register_netdev(dev);
+	if (err) {
+		release_mem_region(base_addr, sizeof(struct lance_regs));
+		release_mem_region(mem_start, A2065_RAM_SIZE);
+		free_netdev(dev);
+		return err;
+	}
+	zorro_set_drvdata(z, dev);
+
+	netdev_info(dev, "A2065 at 0x%08lx, Ethernet Address %pM\n",
+		    board, dev->dev_addr);
+
+	return 0;
+}
+
+
+static void a2065_remove_one(struct zorro_dev *z)
+{
+	struct net_device *dev = zorro_get_drvdata(z);
+
+	unregister_netdev(dev);
+	release_mem_region(ZTWO_PADDR(dev->base_addr),
+			   sizeof(struct lance_regs));
+	release_mem_region(ZTWO_PADDR(dev->mem_start), A2065_RAM_SIZE);
+	free_netdev(dev);
+}
+
+static int __init a2065_init_module(void)
+{
+	return zorro_register_driver(&a2065_driver);
+}
+
+static void __exit a2065_cleanup_module(void)
+{
+	zorro_unregister_driver(&a2065_driver);
+}
+
+module_init(a2065_init_module);
+module_exit(a2065_cleanup_module);
+
+MODULE_LICENSE("GPL");