Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 2343 insertions, 0 deletions

diff --git a/drivers/net/smc91x.c b/drivers/net/smc91x.c
new file mode 100644
index 000000000000..6766bacbb199
--- /dev/null
+++ b/drivers/net/smc91x.c
@@ -0,0 +1,2343 @@
+/*
+ * smc91x.c
+ * This is a driver for SMSC's 91C9x/91C1xx single-chip Ethernet devices.
+ *
+ * Copyright (C) 1996 by Erik Stahlman
+ * Copyright (C) 2001 Standard Microsystems Corporation
+ *	Developed by Simple Network Magic Corporation
+ * Copyright (C) 2003 Monta Vista Software, Inc.
+ *	Unified SMC91x driver by Nicolas Pitre
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ * Arguments:
+ * 	io	= for the base address
+ *	irq	= for the IRQ
+ *	nowait	= 0 for normal wait states, 1 eliminates additional wait states
+ *
+ * original author:
+ * 	Erik Stahlman <erik@vt.edu>
+ *
+ * hardware multicast code:
+ *    Peter Cammaert <pc@denkart.be>
+ *
+ * contributors:
+ * 	Daris A Nevil <dnevil@snmc.com>
+ *      Nicolas Pitre <nico@cam.org>
+ *	Russell King <rmk@arm.linux.org.uk>
+ *
+ * History:
+ *   08/20/00  Arnaldo Melo       fix kfree(skb) in smc_hardware_send_packet
+ *   12/15/00  Christian Jullien  fix "Warning: kfree_skb on hard IRQ"
+ *   03/16/01  Daris A Nevil      modified smc9194.c for use with LAN91C111
+ *   08/22/01  Scott Anderson     merge changes from smc9194 to smc91111
+ *   08/21/01  Pramod B Bhardwaj  added support for RevB of LAN91C111
+ *   12/20/01  Jeff Sutherland    initial port to Xscale PXA with DMA support
+ *   04/07/03  Nicolas Pitre      unified SMC91x driver, killed irq races,
+ *                                more bus abstraction, big cleanup, etc.
+ *   29/09/03  Russell King       - add driver model support
+ *                                - ethtool support
+ *                                - convert to use generic MII interface
+ *                                - add link up/down notification
+ *                                - don't try to handle full negotiation in
+ *                                  smc_phy_configure
+ *                                - clean up (and fix stack overrun) in PHY
+ *                                  MII read/write functions
+ *   22/09/04  Nicolas Pitre      big update (see commit log for details)
+ */
+static const char version[] =
+	"smc91x.c: v1.1, sep 22 2004 by Nicolas Pitre <nico@cam.org>\n";
+
+/* Debugging level */
+#ifndef SMC_DEBUG
+#define SMC_DEBUG		0
+#endif
+
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/errno.h>
+#include <linux/ioport.h>
+#include <linux/crc32.h>
+#include <linux/device.h>
+#include <linux/spinlock.h>
+#include <linux/ethtool.h>
+#include <linux/mii.h>
+#include <linux/workqueue.h>
+
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+
+#include <asm/io.h>
+#include <asm/irq.h>
+
+#include "smc91x.h"
+
+#ifdef CONFIG_ISA
+/*
+ * the LAN91C111 can be at any of the following port addresses.  To change,
+ * for a slightly different card, you can add it to the array.  Keep in
+ * mind that the array must end in zero.
+ */
+static unsigned int smc_portlist[] __initdata = {
+	0x200, 0x220, 0x240, 0x260, 0x280, 0x2A0, 0x2C0, 0x2E0,
+	0x300, 0x320, 0x340, 0x360, 0x380, 0x3A0, 0x3C0, 0x3E0, 0
+};
+
+#ifndef SMC_IOADDR
+# define SMC_IOADDR		-1
+#endif
+static unsigned long io = SMC_IOADDR;
+module_param(io, ulong, 0400);
+MODULE_PARM_DESC(io, "I/O base address");
+
+#ifndef SMC_IRQ
+# define SMC_IRQ		-1
+#endif
+static int irq = SMC_IRQ;
+module_param(irq, int, 0400);
+MODULE_PARM_DESC(irq, "IRQ number");
+
+#endif  /* CONFIG_ISA */
+
+#ifndef SMC_NOWAIT
+# define SMC_NOWAIT		0
+#endif
+static int nowait = SMC_NOWAIT;
+module_param(nowait, int, 0400);
+MODULE_PARM_DESC(nowait, "set to 1 for no wait state");
+
+/*
+ * Transmit timeout, default 5 seconds.
+ */
+static int watchdog = 5000;
+module_param(watchdog, int, 0400);
+MODULE_PARM_DESC(watchdog, "transmit timeout in milliseconds");
+
+MODULE_LICENSE("GPL");
+
+/*
+ * The internal workings of the driver.  If you are changing anything
+ * here with the SMC stuff, you should have the datasheet and know
+ * what you are doing.
+ */
+#define CARDNAME "smc91x"
+
+/*
+ * Use power-down feature of the chip
+ */
+#define POWER_DOWN		1
+
+/*
+ * Wait time for memory to be free.  This probably shouldn't be
+ * tuned that much, as waiting for this means nothing else happens
+ * in the system
+ */
+#define MEMORY_WAIT_TIME	16
+
+/*
+ * This selects whether TX packets are sent one by one to the SMC91x internal
+ * memory and throttled until transmission completes.  This may prevent
+ * RX overruns a litle by keeping much of the memory free for RX packets
+ * but to the expense of reduced TX throughput and increased IRQ overhead.
+ * Note this is not a cure for a too slow data bus or too high IRQ latency.
+ */
+#define THROTTLE_TX_PKTS	0
+
+/*
+ * The MII clock high/low times.  2x this number gives the MII clock period
+ * in microseconds. (was 50, but this gives 6.4ms for each MII transaction!)
+ */
+#define MII_DELAY		1
+
+/* store this information for the driver.. */
+struct smc_local {
+	/*
+	 * If I have to wait until memory is available to send a
+	 * packet, I will store the skbuff here, until I get the
+	 * desired memory.  Then, I'll send it out and free it.
+	 */
+	struct sk_buff *pending_tx_skb;
+	struct tasklet_struct tx_task;
+
+ 	/*
+	 * these are things that the kernel wants me to keep, so users
+	 * can find out semi-useless statistics of how well the card is
+	 * performing
+	 */
+	struct net_device_stats stats;
+
+	/* version/revision of the SMC91x chip */
+	int	version;
+
+	/* Contains the current active transmission mode */
+	int	tcr_cur_mode;
+
+	/* Contains the current active receive mode */
+	int	rcr_cur_mode;
+
+	/* Contains the current active receive/phy mode */
+	int	rpc_cur_mode;
+	int	ctl_rfduplx;
+	int	ctl_rspeed;
+
+	u32	msg_enable;
+	u32	phy_type;
+	struct mii_if_info mii;
+
+	/* work queue */
+	struct work_struct phy_configure;
+	int	work_pending;
+
+	spinlock_t lock;
+
+#ifdef SMC_CAN_USE_DATACS
+	u32	__iomem *datacs;
+#endif
+
+#ifdef SMC_USE_PXA_DMA
+	/* DMA needs the physical address of the chip */
+	u_long physaddr;
+#endif
+	void __iomem *base;
+};
+
+#if SMC_DEBUG > 0
+#define DBG(n, args...)					\
+	do {						\
+		if (SMC_DEBUG >= (n))			\
+			printk(args);	\
+	} while (0)
+
+#define PRINTK(args...)   printk(args)
+#else
+#define DBG(n, args...)   do { } while(0)
+#define PRINTK(args...)   printk(KERN_DEBUG args)
+#endif
+
+#if SMC_DEBUG > 3
+static void PRINT_PKT(u_char *buf, int length)
+{
+	int i;
+	int remainder;
+	int lines;
+
+	lines = length / 16;
+	remainder = length % 16;
+
+	for (i = 0; i < lines ; i ++) {
+		int cur;
+		for (cur = 0; cur < 8; cur++) {
+			u_char a, b;
+			a = *buf++;
+			b = *buf++;
+			printk("%02x%02x ", a, b);
+		}
+		printk("\n");
+	}
+	for (i = 0; i < remainder/2 ; i++) {
+		u_char a, b;
+		a = *buf++;
+		b = *buf++;
+		printk("%02x%02x ", a, b);
+	}
+	printk("\n");
+}
+#else
+#define PRINT_PKT(x...)  do { } while(0)
+#endif
+
+
+/* this enables an interrupt in the interrupt mask register */
+#define SMC_ENABLE_INT(x) do {						\
+	unsigned char mask;						\
+	spin_lock_irq(&lp->lock);					\
+	mask = SMC_GET_INT_MASK();					\
+	mask |= (x);							\
+	SMC_SET_INT_MASK(mask);						\
+	spin_unlock_irq(&lp->lock);					\
+} while (0)
+
+/* this disables an interrupt from the interrupt mask register */
+#define SMC_DISABLE_INT(x) do {						\
+	unsigned char mask;						\
+	spin_lock_irq(&lp->lock);					\
+	mask = SMC_GET_INT_MASK();					\
+	mask &= ~(x);							\
+	SMC_SET_INT_MASK(mask);						\
+	spin_unlock_irq(&lp->lock);					\
+} while (0)
+
+/*
+ * Wait while MMU is busy.  This is usually in the order of a few nanosecs
+ * if at all, but let's avoid deadlocking the system if the hardware
+ * decides to go south.
+ */
+#define SMC_WAIT_MMU_BUSY() do {					\
+	if (unlikely(SMC_GET_MMU_CMD() & MC_BUSY)) {			\
+		unsigned long timeout = jiffies + 2;			\
+		while (SMC_GET_MMU_CMD() & MC_BUSY) {			\
+			if (time_after(jiffies, timeout)) {		\
+				printk("%s: timeout %s line %d\n",	\
+					dev->name, __FILE__, __LINE__);	\
+				break;					\
+			}						\
+			cpu_relax();					\
+		}							\
+	}								\
+} while (0)
+
+
+/*
+ * this does a soft reset on the device
+ */
+static void smc_reset(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+	unsigned int ctl, cfg;
+
+	DBG(2, "%s: %s\n", dev->name, __FUNCTION__);
+
+	/* Disable all interrupts */
+	spin_lock(&lp->lock);
+	SMC_SELECT_BANK(2);
+	SMC_SET_INT_MASK(0);
+	spin_unlock(&lp->lock);
+
+	/*
+	 * This resets the registers mostly to defaults, but doesn't
+	 * affect EEPROM.  That seems unnecessary
+	 */
+	SMC_SELECT_BANK(0);
+	SMC_SET_RCR(RCR_SOFTRST);
+
+	/*
+	 * Setup the Configuration Register
+	 * This is necessary because the CONFIG_REG is not affected
+	 * by a soft reset
+	 */
+	SMC_SELECT_BANK(1);
+
+	cfg = CONFIG_DEFAULT;
+
+	/*
+	 * Setup for fast accesses if requested.  If the card/system
+	 * can't handle it then there will be no recovery except for
+	 * a hard reset or power cycle
+	 */
+	if (nowait)
+		cfg |= CONFIG_NO_WAIT;
+
+	/*
+	 * Release from possible power-down state
+	 * Configuration register is not affected by Soft Reset
+	 */
+	cfg |= CONFIG_EPH_POWER_EN;
+
+	SMC_SET_CONFIG(cfg);
+
+	/* this should pause enough for the chip to be happy */
+	/*
+	 * elaborate?  What does the chip _need_? --jgarzik
+	 *
+	 * This seems to be undocumented, but something the original
+	 * driver(s) have always done.  Suspect undocumented timing
+	 * info/determined empirically. --rmk
+	 */
+	udelay(1);
+
+	/* Disable transmit and receive functionality */
+	SMC_SELECT_BANK(0);
+	SMC_SET_RCR(RCR_CLEAR);
+	SMC_SET_TCR(TCR_CLEAR);
+
+	SMC_SELECT_BANK(1);
+	ctl = SMC_GET_CTL() | CTL_LE_ENABLE;
+
+	/*
+	 * Set the control register to automatically release successfully
+	 * transmitted packets, to make the best use out of our limited
+	 * memory
+	 */
+	if(!THROTTLE_TX_PKTS)
+		ctl |= CTL_AUTO_RELEASE;
+	else
+		ctl &= ~CTL_AUTO_RELEASE;
+	SMC_SET_CTL(ctl);
+
+	/* Reset the MMU */
+	SMC_SELECT_BANK(2);
+	SMC_SET_MMU_CMD(MC_RESET);
+	SMC_WAIT_MMU_BUSY();
+
+	/* clear anything saved */
+	if (lp->pending_tx_skb != NULL) {
+		dev_kfree_skb (lp->pending_tx_skb);
+		lp->pending_tx_skb = NULL;
+		lp->stats.tx_errors++;
+		lp->stats.tx_aborted_errors++;
+	}
+}
+
+/*
+ * Enable Interrupts, Receive, and Transmit
+ */
+static void smc_enable(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+	int mask;
+
+	DBG(2, "%s: %s\n", dev->name, __FUNCTION__);
+
+	/* see the header file for options in TCR/RCR DEFAULT */
+	SMC_SELECT_BANK(0);
+	SMC_SET_TCR(lp->tcr_cur_mode);
+	SMC_SET_RCR(lp->rcr_cur_mode);
+
+	SMC_SELECT_BANK(1);
+	SMC_SET_MAC_ADDR(dev->dev_addr);
+
+	/* now, enable interrupts */
+	mask = IM_EPH_INT|IM_RX_OVRN_INT|IM_RCV_INT;
+	if (lp->version >= (CHIP_91100 << 4))
+		mask |= IM_MDINT;
+	SMC_SELECT_BANK(2);
+	SMC_SET_INT_MASK(mask);
+
+	/*
+	 * From this point the register bank must _NOT_ be switched away
+	 * to something else than bank 2 without proper locking against
+	 * races with any tasklet or interrupt handlers until smc_shutdown()
+	 * or smc_reset() is called.
+	 */
+}
+
+/*
+ * this puts the device in an inactive state
+ */
+static void smc_shutdown(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+
+	DBG(2, "%s: %s\n", CARDNAME, __FUNCTION__);
+
+	/* no more interrupts for me */
+	spin_lock(&lp->lock);
+	SMC_SELECT_BANK(2);
+	SMC_SET_INT_MASK(0);
+	spin_unlock(&lp->lock);
+
+	/* and tell the card to stay away from that nasty outside world */
+	SMC_SELECT_BANK(0);
+	SMC_SET_RCR(RCR_CLEAR);
+	SMC_SET_TCR(TCR_CLEAR);
+
+#ifdef POWER_DOWN
+	/* finally, shut the chip down */
+	SMC_SELECT_BANK(1);
+	SMC_SET_CONFIG(SMC_GET_CONFIG() & ~CONFIG_EPH_POWER_EN);
+#endif
+}
+
+/*
+ * This is the procedure to handle the receipt of a packet.
+ */
+static inline void  smc_rcv(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+	unsigned int packet_number, status, packet_len;
+
+	DBG(3, "%s: %s\n", dev->name, __FUNCTION__);
+
+	packet_number = SMC_GET_RXFIFO();
+	if (unlikely(packet_number & RXFIFO_REMPTY)) {
+		PRINTK("%s: smc_rcv with nothing on FIFO.\n", dev->name);
+		return;
+	}
+
+	/* read from start of packet */
+	SMC_SET_PTR(PTR_READ | PTR_RCV | PTR_AUTOINC);
+
+	/* First two words are status and packet length */
+	SMC_GET_PKT_HDR(status, packet_len);
+	packet_len &= 0x07ff;  /* mask off top bits */
+	DBG(2, "%s: RX PNR 0x%x STATUS 0x%04x LENGTH 0x%04x (%d)\n",
+		dev->name, packet_number, status,
+		packet_len, packet_len);
+
+	back:
+	if (unlikely(packet_len < 6 || status & RS_ERRORS)) {
+		if (status & RS_TOOLONG && packet_len <= (1514 + 4 + 6)) {
+			/* accept VLAN packets */
+			status &= ~RS_TOOLONG;
+			goto back;
+		}
+		if (packet_len < 6) {
+			/* bloody hardware */
+			printk(KERN_ERR "%s: fubar (rxlen %u status %x\n",
+					dev->name, packet_len, status);
+			status |= RS_TOOSHORT;
+		}
+		SMC_WAIT_MMU_BUSY();
+		SMC_SET_MMU_CMD(MC_RELEASE);
+		lp->stats.rx_errors++;
+		if (status & RS_ALGNERR)
+			lp->stats.rx_frame_errors++;
+		if (status & (RS_TOOSHORT | RS_TOOLONG))
+			lp->stats.rx_length_errors++;
+		if (status & RS_BADCRC)
+			lp->stats.rx_crc_errors++;
+	} else {
+		struct sk_buff *skb;
+		unsigned char *data;
+		unsigned int data_len;
+
+		/* set multicast stats */
+		if (status & RS_MULTICAST)
+			lp->stats.multicast++;
+
+		/*
+		 * Actual payload is packet_len - 6 (or 5 if odd byte).
+		 * We want skb_reserve(2) and the final ctrl word
+		 * (2 bytes, possibly containing the payload odd byte).
+		 * Furthermore, we add 2 bytes to allow rounding up to
+		 * multiple of 4 bytes on 32 bit buses.
+		 * Hence packet_len - 6 + 2 + 2 + 2.
+		 */
+		skb = dev_alloc_skb(packet_len);
+		if (unlikely(skb == NULL)) {
+			printk(KERN_NOTICE "%s: Low memory, packet dropped.\n",
+				dev->name);
+			SMC_WAIT_MMU_BUSY();
+			SMC_SET_MMU_CMD(MC_RELEASE);
+			lp->stats.rx_dropped++;
+			return;
+		}
+
+		/* Align IP header to 32 bits */
+		skb_reserve(skb, 2);
+
+		/* BUG: the LAN91C111 rev A never sets this bit. Force it. */
+		if (lp->version == 0x90)
+			status |= RS_ODDFRAME;
+
+		/*
+		 * If odd length: packet_len - 5,
+		 * otherwise packet_len - 6.
+		 * With the trailing ctrl byte it's packet_len - 4.
+		 */
+		data_len = packet_len - ((status & RS_ODDFRAME) ? 5 : 6);
+		data = skb_put(skb, data_len);
+		SMC_PULL_DATA(data, packet_len - 4);
+
+		SMC_WAIT_MMU_BUSY();
+		SMC_SET_MMU_CMD(MC_RELEASE);
+
+		PRINT_PKT(data, packet_len - 4);
+
+		dev->last_rx = jiffies;
+		skb->dev = dev;
+		skb->protocol = eth_type_trans(skb, dev);
+		netif_rx(skb);
+		lp->stats.rx_packets++;
+		lp->stats.rx_bytes += data_len;
+	}
+}
+
+#ifdef CONFIG_SMP
+/*
+ * On SMP we have the following problem:
+ *
+ * 	A = smc_hardware_send_pkt()
+ * 	B = smc_hard_start_xmit()
+ * 	C = smc_interrupt()
+ *
+ * A and B can never be executed simultaneously.  However, at least on UP,
+ * it is possible (and even desirable) for C to interrupt execution of
+ * A or B in order to have better RX reliability and avoid overruns.
+ * C, just like A and B, must have exclusive access to the chip and
+ * each of them must lock against any other concurrent access.
+ * Unfortunately this is not possible to have C suspend execution of A or
+ * B taking place on another CPU. On UP this is no an issue since A and B
+ * are run from softirq context and C from hard IRQ context, and there is
+ * no other CPU where concurrent access can happen.
+ * If ever there is a way to force at least B and C to always be executed
+ * on the same CPU then we could use read/write locks to protect against
+ * any other concurrent access and C would always interrupt B. But life
+ * isn't that easy in a SMP world...
+ */
+#define smc_special_trylock(lock)					\
+({									\
+	int __ret;							\
+	local_irq_disable();						\
+	__ret = spin_trylock(lock);					\
+	if (!__ret)							\
+		local_irq_enable();					\
+	__ret;								\
+})
+#define smc_special_lock(lock)		spin_lock_irq(lock)
+#define smc_special_unlock(lock)	spin_unlock_irq(lock)
+#else
+#define smc_special_trylock(lock)	(1)
+#define smc_special_lock(lock)		do { } while (0)
+#define smc_special_unlock(lock)	do { } while (0)
+#endif
+
+/*
+ * This is called to actually send a packet to the chip.
+ */
+static void smc_hardware_send_pkt(unsigned long data)
+{
+	struct net_device *dev = (struct net_device *)data;
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+	struct sk_buff *skb;
+	unsigned int packet_no, len;
+	unsigned char *buf;
+
+	DBG(3, "%s: %s\n", dev->name, __FUNCTION__);
+
+	if (!smc_special_trylock(&lp->lock)) {
+		netif_stop_queue(dev);
+		tasklet_schedule(&lp->tx_task);
+		return;
+	}
+
+	skb = lp->pending_tx_skb;
+	lp->pending_tx_skb = NULL;
+	packet_no = SMC_GET_AR();
+	if (unlikely(packet_no & AR_FAILED)) {
+		printk("%s: Memory allocation failed.\n", dev->name);
+		lp->stats.tx_errors++;
+		lp->stats.tx_fifo_errors++;
+		smc_special_unlock(&lp->lock);
+		goto done;
+	}
+
+	/* point to the beginning of the packet */
+	SMC_SET_PN(packet_no);
+	SMC_SET_PTR(PTR_AUTOINC);
+
+	buf = skb->data;
+	len = skb->len;
+	DBG(2, "%s: TX PNR 0x%x LENGTH 0x%04x (%d) BUF 0x%p\n",
+		dev->name, packet_no, len, len, buf);
+	PRINT_PKT(buf, len);
+
+	/*
+	 * Send the packet length (+6 for status words, length, and ctl.
+	 * The card will pad to 64 bytes with zeroes if packet is too small.
+	 */
+	SMC_PUT_PKT_HDR(0, len + 6);
+
+	/* send the actual data */
+	SMC_PUSH_DATA(buf, len & ~1);
+
+	/* Send final ctl word with the last byte if there is one */
+	SMC_outw(((len & 1) ? (0x2000 | buf[len-1]) : 0), ioaddr, DATA_REG);
+
+	/*
+	 * If THROTTLE_TX_PKTS is set, we look at the TX_EMPTY flag
+	 * before queueing this packet for TX, and if it's clear then
+	 * we stop the queue here.  This will have the effect of
+	 * having at most 2 packets queued for TX in the chip's memory
+	 * at all time. If THROTTLE_TX_PKTS is not set then the queue
+	 * is stopped only when memory allocation (MC_ALLOC) does not
+	 * succeed right away.
+	 */
+	if (THROTTLE_TX_PKTS && !(SMC_GET_INT() & IM_TX_EMPTY_INT))
+		netif_stop_queue(dev);
+
+	/* queue the packet for TX */
+	SMC_SET_MMU_CMD(MC_ENQUEUE);
+	SMC_ACK_INT(IM_TX_EMPTY_INT);
+	smc_special_unlock(&lp->lock);
+
+	dev->trans_start = jiffies;
+	lp->stats.tx_packets++;
+	lp->stats.tx_bytes += len;
+
+	SMC_ENABLE_INT(IM_TX_INT | IM_TX_EMPTY_INT);
+
+done:	if (!THROTTLE_TX_PKTS)
+		netif_wake_queue(dev);
+
+	dev_kfree_skb(skb);
+}
+
+/*
+ * Since I am not sure if I will have enough room in the chip's ram
+ * to store the packet, I call this routine which either sends it
+ * now, or set the card to generates an interrupt when ready
+ * for the packet.
+ */
+static int smc_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+	unsigned int numPages, poll_count, status;
+
+	DBG(3, "%s: %s\n", dev->name, __FUNCTION__);
+
+	BUG_ON(lp->pending_tx_skb != NULL);
+	lp->pending_tx_skb = skb;
+
+	/*
+	 * The MMU wants the number of pages to be the number of 256 bytes
+	 * 'pages', minus 1 (since a packet can't ever have 0 pages :))
+	 *
+	 * The 91C111 ignores the size bits, but earlier models don't.
+	 *
+	 * Pkt size for allocating is data length +6 (for additional status
+	 * words, length and ctl)
+	 *
+	 * If odd size then last byte is included in ctl word.
+	 */
+	numPages = ((skb->len & ~1) + (6 - 1)) >> 8;
+	if (unlikely(numPages > 7)) {
+		printk("%s: Far too big packet error.\n", dev->name);
+		lp->pending_tx_skb = NULL;
+		lp->stats.tx_errors++;
+		lp->stats.tx_dropped++;
+		dev_kfree_skb(skb);
+		return 0;
+	}
+
+	smc_special_lock(&lp->lock);
+
+	/* now, try to allocate the memory */
+	SMC_SET_MMU_CMD(MC_ALLOC | numPages);
+
+	/*
+	 * Poll the chip for a short amount of time in case the
+	 * allocation succeeds quickly.
+	 */
+	poll_count = MEMORY_WAIT_TIME;
+	do {
+		status = SMC_GET_INT();
+		if (status & IM_ALLOC_INT) {
+			SMC_ACK_INT(IM_ALLOC_INT);
+  			break;
+		}
+   	} while (--poll_count);
+
+	smc_special_unlock(&lp->lock);
+
+   	if (!poll_count) {
+		/* oh well, wait until the chip finds memory later */
+		netif_stop_queue(dev);
+		DBG(2, "%s: TX memory allocation deferred.\n", dev->name);
+		SMC_ENABLE_INT(IM_ALLOC_INT);
+   	} else {
+		/*
+		 * Allocation succeeded: push packet to the chip's own memory
+		 * immediately.
+		 */  
+		smc_hardware_send_pkt((unsigned long)dev);
+	}
+
+	return 0;
+}
+
+/*
+ * This handles a TX interrupt, which is only called when:
+ * - a TX error occurred, or
+ * - CTL_AUTO_RELEASE is not set and TX of a packet completed.
+ */
+static void smc_tx(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+	unsigned int saved_packet, packet_no, tx_status, pkt_len;
+
+	DBG(3, "%s: %s\n", dev->name, __FUNCTION__);
+
+	/* If the TX FIFO is empty then nothing to do */
+	packet_no = SMC_GET_TXFIFO();
+	if (unlikely(packet_no & TXFIFO_TEMPTY)) {
+		PRINTK("%s: smc_tx with nothing on FIFO.\n", dev->name);
+		return;
+	}
+
+	/* select packet to read from */
+	saved_packet = SMC_GET_PN();
+	SMC_SET_PN(packet_no);
+
+	/* read the first word (status word) from this packet */
+	SMC_SET_PTR(PTR_AUTOINC | PTR_READ);
+	SMC_GET_PKT_HDR(tx_status, pkt_len);
+	DBG(2, "%s: TX STATUS 0x%04x PNR 0x%02x\n",
+		dev->name, tx_status, packet_no);
+
+	if (!(tx_status & TS_SUCCESS))
+		lp->stats.tx_errors++;
+	if (tx_status & TS_LOSTCAR)
+		lp->stats.tx_carrier_errors++;
+
+	if (tx_status & TS_LATCOL) {
+		PRINTK("%s: late collision occurred on last xmit\n", dev->name);
+		lp->stats.tx_window_errors++;
+		if (!(lp->stats.tx_window_errors & 63) && net_ratelimit()) {
+			printk(KERN_INFO "%s: unexpectedly large numbers of "
+			       "late collisions. Please check duplex "
+			       "setting.\n", dev->name);
+		}
+	}
+
+	/* kill the packet */
+	SMC_WAIT_MMU_BUSY();
+	SMC_SET_MMU_CMD(MC_FREEPKT);
+
+	/* Don't restore Packet Number Reg until busy bit is cleared */
+	SMC_WAIT_MMU_BUSY();
+	SMC_SET_PN(saved_packet);
+
+	/* re-enable transmit */
+	SMC_SELECT_BANK(0);
+	SMC_SET_TCR(lp->tcr_cur_mode);
+	SMC_SELECT_BANK(2);
+}
+
+
+/*---PHY CONTROL AND CONFIGURATION-----------------------------------------*/
+
+static void smc_mii_out(struct net_device *dev, unsigned int val, int bits)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+	unsigned int mii_reg, mask;
+
+	mii_reg = SMC_GET_MII() & ~(MII_MCLK | MII_MDOE | MII_MDO);
+	mii_reg |= MII_MDOE;
+
+	for (mask = 1 << (bits - 1); mask; mask >>= 1) {
+		if (val & mask)
+			mii_reg |= MII_MDO;
+		else
+			mii_reg &= ~MII_MDO;
+
+		SMC_SET_MII(mii_reg);
+		udelay(MII_DELAY);
+		SMC_SET_MII(mii_reg | MII_MCLK);
+		udelay(MII_DELAY);
+	}
+}
+
+static unsigned int smc_mii_in(struct net_device *dev, int bits)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+	unsigned int mii_reg, mask, val;
+
+	mii_reg = SMC_GET_MII() & ~(MII_MCLK | MII_MDOE | MII_MDO);
+	SMC_SET_MII(mii_reg);
+
+	for (mask = 1 << (bits - 1), val = 0; mask; mask >>= 1) {
+		if (SMC_GET_MII() & MII_MDI)
+			val |= mask;
+
+		SMC_SET_MII(mii_reg);
+		udelay(MII_DELAY);
+		SMC_SET_MII(mii_reg | MII_MCLK);
+		udelay(MII_DELAY);
+	}
+
+	return val;
+}
+
+/*
+ * Reads a register from the MII Management serial interface
+ */
+static int smc_phy_read(struct net_device *dev, int phyaddr, int phyreg)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+	unsigned int phydata;
+
+	SMC_SELECT_BANK(3);
+
+	/* Idle - 32 ones */
+	smc_mii_out(dev, 0xffffffff, 32);
+
+	/* Start code (01) + read (10) + phyaddr + phyreg */
+	smc_mii_out(dev, 6 << 10 | phyaddr << 5 | phyreg, 14);
+
+	/* Turnaround (2bits) + phydata */
+	phydata = smc_mii_in(dev, 18);
+
+	/* Return to idle state */
+	SMC_SET_MII(SMC_GET_MII() & ~(MII_MCLK|MII_MDOE|MII_MDO));
+
+	DBG(3, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n",
+		__FUNCTION__, phyaddr, phyreg, phydata);
+
+	SMC_SELECT_BANK(2);
+	return phydata;
+}
+
+/*
+ * Writes a register to the MII Management serial interface
+ */
+static void smc_phy_write(struct net_device *dev, int phyaddr, int phyreg,
+			  int phydata)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+
+	SMC_SELECT_BANK(3);
+
+	/* Idle - 32 ones */
+	smc_mii_out(dev, 0xffffffff, 32);
+
+	/* Start code (01) + write (01) + phyaddr + phyreg + turnaround + phydata */
+	smc_mii_out(dev, 5 << 28 | phyaddr << 23 | phyreg << 18 | 2 << 16 | phydata, 32);
+
+	/* Return to idle state */
+	SMC_SET_MII(SMC_GET_MII() & ~(MII_MCLK|MII_MDOE|MII_MDO));
+
+	DBG(3, "%s: phyaddr=0x%x, phyreg=0x%x, phydata=0x%x\n",
+		__FUNCTION__, phyaddr, phyreg, phydata);
+
+	SMC_SELECT_BANK(2);
+}
+
+/*
+ * Finds and reports the PHY address
+ */
+static void smc_phy_detect(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	int phyaddr;
+
+	DBG(2, "%s: %s\n", dev->name, __FUNCTION__);
+
+	lp->phy_type = 0;
+
+	/*
+	 * Scan all 32 PHY addresses if necessary, starting at
+	 * PHY#1 to PHY#31, and then PHY#0 last.
+	 */
+	for (phyaddr = 1; phyaddr < 33; ++phyaddr) {
+		unsigned int id1, id2;
+
+		/* Read the PHY identifiers */
+		id1 = smc_phy_read(dev, phyaddr & 31, MII_PHYSID1);
+		id2 = smc_phy_read(dev, phyaddr & 31, MII_PHYSID2);
+
+		DBG(3, "%s: phy_id1=0x%x, phy_id2=0x%x\n",
+			dev->name, id1, id2);
+
+		/* Make sure it is a valid identifier */
+		if (id1 != 0x0000 && id1 != 0xffff && id1 != 0x8000 &&
+		    id2 != 0x0000 && id2 != 0xffff && id2 != 0x8000) {
+			/* Save the PHY's address */
+			lp->mii.phy_id = phyaddr & 31;
+			lp->phy_type = id1 << 16 | id2;
+			break;
+		}
+	}
+}
+
+/*
+ * Sets the PHY to a configuration as determined by the user
+ */
+static int smc_phy_fixed(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+	int phyaddr = lp->mii.phy_id;
+	int bmcr, cfg1;
+
+	DBG(3, "%s: %s\n", dev->name, __FUNCTION__);
+
+	/* Enter Link Disable state */
+	cfg1 = smc_phy_read(dev, phyaddr, PHY_CFG1_REG);
+	cfg1 |= PHY_CFG1_LNKDIS;
+	smc_phy_write(dev, phyaddr, PHY_CFG1_REG, cfg1);
+
+	/*
+	 * Set our fixed capabilities
+	 * Disable auto-negotiation
+	 */
+	bmcr = 0;
+
+	if (lp->ctl_rfduplx)
+		bmcr |= BMCR_FULLDPLX;
+
+	if (lp->ctl_rspeed == 100)
+		bmcr |= BMCR_SPEED100;
+
+	/* Write our capabilities to the phy control register */
+	smc_phy_write(dev, phyaddr, MII_BMCR, bmcr);
+
+	/* Re-Configure the Receive/Phy Control register */
+	SMC_SELECT_BANK(0);
+	SMC_SET_RPC(lp->rpc_cur_mode);
+	SMC_SELECT_BANK(2);
+
+	return 1;
+}
+
+/*
+ * smc_phy_reset - reset the phy
+ * @dev: net device
+ * @phy: phy address
+ *
+ * Issue a software reset for the specified PHY and
+ * wait up to 100ms for the reset to complete.  We should
+ * not access the PHY for 50ms after issuing the reset.
+ *
+ * The time to wait appears to be dependent on the PHY.
+ *
+ * Must be called with lp->lock locked.
+ */
+static int smc_phy_reset(struct net_device *dev, int phy)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	unsigned int bmcr;
+	int timeout;
+
+	smc_phy_write(dev, phy, MII_BMCR, BMCR_RESET);
+
+	for (timeout = 2; timeout; timeout--) {
+		spin_unlock_irq(&lp->lock);
+		msleep(50);
+		spin_lock_irq(&lp->lock);
+
+		bmcr = smc_phy_read(dev, phy, MII_BMCR);
+		if (!(bmcr & BMCR_RESET))
+			break;
+	}
+
+	return bmcr & BMCR_RESET;
+}
+
+/*
+ * smc_phy_powerdown - powerdown phy
+ * @dev: net device
+ *
+ * Power down the specified PHY
+ */
+static void smc_phy_powerdown(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	unsigned int bmcr;
+	int phy = lp->mii.phy_id;
+
+	if (lp->phy_type == 0)
+		return;
+
+	/* We need to ensure that no calls to smc_phy_configure are
+	   pending.
+
+	   flush_scheduled_work() cannot be called because we are
+	   running with the netlink semaphore held (from
+	   devinet_ioctl()) and the pending work queue contains
+	   linkwatch_event() (scheduled by netif_carrier_off()
+	   above). linkwatch_event() also wants the netlink semaphore.
+	*/
+	while(lp->work_pending)
+		schedule();
+
+	bmcr = smc_phy_read(dev, phy, MII_BMCR);
+	smc_phy_write(dev, phy, MII_BMCR, bmcr | BMCR_PDOWN);
+}
+
+/*
+ * smc_phy_check_media - check the media status and adjust TCR
+ * @dev: net device
+ * @init: set true for initialisation
+ *
+ * Select duplex mode depending on negotiation state.  This
+ * also updates our carrier state.
+ */
+static void smc_phy_check_media(struct net_device *dev, int init)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+
+	if (mii_check_media(&lp->mii, netif_msg_link(lp), init)) {
+		/* duplex state has changed */
+		if (lp->mii.full_duplex) {
+			lp->tcr_cur_mode |= TCR_SWFDUP;
+		} else {
+			lp->tcr_cur_mode &= ~TCR_SWFDUP;
+		}
+
+		SMC_SELECT_BANK(0);
+		SMC_SET_TCR(lp->tcr_cur_mode);
+	}
+}
+
+/*
+ * Configures the specified PHY through the MII management interface
+ * using Autonegotiation.
+ * Calls smc_phy_fixed() if the user has requested a certain config.
+ * If RPC ANEG bit is set, the media selection is dependent purely on
+ * the selection by the MII (either in the MII BMCR reg or the result
+ * of autonegotiation.)  If the RPC ANEG bit is cleared, the selection
+ * is controlled by the RPC SPEED and RPC DPLX bits.
+ */
+static void smc_phy_configure(void *data)
+{
+	struct net_device *dev = data;
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+	int phyaddr = lp->mii.phy_id;
+	int my_phy_caps; /* My PHY capabilities */
+	int my_ad_caps; /* My Advertised capabilities */
+	int status;
+
+	DBG(3, "%s:smc_program_phy()\n", dev->name);
+
+	spin_lock_irq(&lp->lock);
+
+	/*
+	 * We should not be called if phy_type is zero.
+	 */
+	if (lp->phy_type == 0)
+		goto smc_phy_configure_exit;
+
+	if (smc_phy_reset(dev, phyaddr)) {
+		printk("%s: PHY reset timed out\n", dev->name);
+		goto smc_phy_configure_exit;
+	}
+
+	/*
+	 * Enable PHY Interrupts (for register 18)
+	 * Interrupts listed here are disabled
+	 */
+	smc_phy_write(dev, phyaddr, PHY_MASK_REG,
+		PHY_INT_LOSSSYNC | PHY_INT_CWRD | PHY_INT_SSD |
+		PHY_INT_ESD | PHY_INT_RPOL | PHY_INT_JAB |
+		PHY_INT_SPDDET | PHY_INT_DPLXDET);
+
+	/* Configure the Receive/Phy Control register */
+	SMC_SELECT_BANK(0);
+	SMC_SET_RPC(lp->rpc_cur_mode);
+
+	/* If the user requested no auto neg, then go set his request */
+	if (lp->mii.force_media) {
+		smc_phy_fixed(dev);
+		goto smc_phy_configure_exit;
+	}
+
+	/* Copy our capabilities from MII_BMSR to MII_ADVERTISE */
+	my_phy_caps = smc_phy_read(dev, phyaddr, MII_BMSR);
+
+	if (!(my_phy_caps & BMSR_ANEGCAPABLE)) {
+		printk(KERN_INFO "Auto negotiation NOT supported\n");
+		smc_phy_fixed(dev);
+		goto smc_phy_configure_exit;
+	}
+
+	my_ad_caps = ADVERTISE_CSMA; /* I am CSMA capable */
+
+	if (my_phy_caps & BMSR_100BASE4)
+		my_ad_caps |= ADVERTISE_100BASE4;
+	if (my_phy_caps & BMSR_100FULL)
+		my_ad_caps |= ADVERTISE_100FULL;
+	if (my_phy_caps & BMSR_100HALF)
+		my_ad_caps |= ADVERTISE_100HALF;
+	if (my_phy_caps & BMSR_10FULL)
+		my_ad_caps |= ADVERTISE_10FULL;
+	if (my_phy_caps & BMSR_10HALF)
+		my_ad_caps |= ADVERTISE_10HALF;
+
+	/* Disable capabilities not selected by our user */
+	if (lp->ctl_rspeed != 100)
+		my_ad_caps &= ~(ADVERTISE_100BASE4|ADVERTISE_100FULL|ADVERTISE_100HALF);
+
+	if (!lp->ctl_rfduplx)
+		my_ad_caps &= ~(ADVERTISE_100FULL|ADVERTISE_10FULL);
+
+	/* Update our Auto-Neg Advertisement Register */
+	smc_phy_write(dev, phyaddr, MII_ADVERTISE, my_ad_caps);
+	lp->mii.advertising = my_ad_caps;
+
+	/*
+	 * Read the register back.  Without this, it appears that when
+	 * auto-negotiation is restarted, sometimes it isn't ready and
+	 * the link does not come up.
+	 */
+	status = smc_phy_read(dev, phyaddr, MII_ADVERTISE);
+
+	DBG(2, "%s: phy caps=%x\n", dev->name, my_phy_caps);
+	DBG(2, "%s: phy advertised caps=%x\n", dev->name, my_ad_caps);
+
+	/* Restart auto-negotiation process in order to advertise my caps */
+	smc_phy_write(dev, phyaddr, MII_BMCR, BMCR_ANENABLE | BMCR_ANRESTART);
+
+	smc_phy_check_media(dev, 1);
+
+smc_phy_configure_exit:
+	spin_unlock_irq(&lp->lock);
+	lp->work_pending = 0;
+}
+
+/*
+ * smc_phy_interrupt
+ *
+ * Purpose:  Handle interrupts relating to PHY register 18. This is
+ *  called from the "hard" interrupt handler under our private spinlock.
+ */
+static void smc_phy_interrupt(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	int phyaddr = lp->mii.phy_id;
+	int phy18;
+
+	DBG(2, "%s: %s\n", dev->name, __FUNCTION__);
+
+	if (lp->phy_type == 0)
+		return;
+
+	for(;;) {
+		smc_phy_check_media(dev, 0);
+
+		/* Read PHY Register 18, Status Output */
+		phy18 = smc_phy_read(dev, phyaddr, PHY_INT_REG);
+		if ((phy18 & PHY_INT_INT) == 0)
+			break;
+	}
+}
+
+/*--- END PHY CONTROL AND CONFIGURATION-------------------------------------*/
+
+static void smc_10bt_check_media(struct net_device *dev, int init)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+	unsigned int old_carrier, new_carrier;
+
+	old_carrier = netif_carrier_ok(dev) ? 1 : 0;
+
+	SMC_SELECT_BANK(0);
+	new_carrier = SMC_inw(ioaddr, EPH_STATUS_REG) & ES_LINK_OK ? 1 : 0;
+	SMC_SELECT_BANK(2);
+
+	if (init || (old_carrier != new_carrier)) {
+		if (!new_carrier) {
+			netif_carrier_off(dev);
+		} else {
+			netif_carrier_on(dev);
+		}
+		if (netif_msg_link(lp))
+			printk(KERN_INFO "%s: link %s\n", dev->name,
+			       new_carrier ? "up" : "down");
+	}
+}
+
+static void smc_eph_interrupt(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+	unsigned int ctl;
+
+	smc_10bt_check_media(dev, 0);
+
+	SMC_SELECT_BANK(1);
+	ctl = SMC_GET_CTL();
+	SMC_SET_CTL(ctl & ~CTL_LE_ENABLE);
+	SMC_SET_CTL(ctl);
+	SMC_SELECT_BANK(2);
+}
+
+/*
+ * This is the main routine of the driver, to handle the device when
+ * it needs some attention.
+ */
+static irqreturn_t smc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct net_device *dev = dev_id;
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+	int status, mask, timeout, card_stats;
+	int saved_pointer;
+
+	DBG(3, "%s: %s\n", dev->name, __FUNCTION__);
+
+	spin_lock(&lp->lock);
+
+	/* A preamble may be used when there is a potential race
+	 * between the interruptible transmit functions and this
+	 * ISR. */
+	SMC_INTERRUPT_PREAMBLE;
+
+	saved_pointer = SMC_GET_PTR();
+	mask = SMC_GET_INT_MASK();
+	SMC_SET_INT_MASK(0);
+
+	/* set a timeout value, so I don't stay here forever */
+	timeout = 8;
+
+	do {
+		status = SMC_GET_INT();
+
+		DBG(2, "%s: INT 0x%02x MASK 0x%02x MEM 0x%04x FIFO 0x%04x\n",
+			dev->name, status, mask,
+			({ int meminfo; SMC_SELECT_BANK(0);
+			   meminfo = SMC_GET_MIR();
+			   SMC_SELECT_BANK(2); meminfo; }),
+			SMC_GET_FIFO());
+
+		status &= mask;
+		if (!status)
+			break;
+
+		if (status & IM_RCV_INT) {
+			DBG(3, "%s: RX irq\n", dev->name);
+			smc_rcv(dev);
+		} else if (status & IM_TX_INT) {
+			DBG(3, "%s: TX int\n", dev->name);
+			smc_tx(dev);
+			SMC_ACK_INT(IM_TX_INT);
+			if (THROTTLE_TX_PKTS)
+				netif_wake_queue(dev);
+		} else if (status & IM_ALLOC_INT) {
+			DBG(3, "%s: Allocation irq\n", dev->name);
+			tasklet_hi_schedule(&lp->tx_task);
+			mask &= ~IM_ALLOC_INT;
+		} else if (status & IM_TX_EMPTY_INT) {
+			DBG(3, "%s: TX empty\n", dev->name);
+			mask &= ~IM_TX_EMPTY_INT;
+
+			/* update stats */
+			SMC_SELECT_BANK(0);
+			card_stats = SMC_GET_COUNTER();
+			SMC_SELECT_BANK(2);
+
+			/* single collisions */
+			lp->stats.collisions += card_stats & 0xF;
+			card_stats >>= 4;
+
+			/* multiple collisions */
+			lp->stats.collisions += card_stats & 0xF;
+		} else if (status & IM_RX_OVRN_INT) {
+			DBG(1, "%s: RX overrun\n", dev->name);
+			SMC_ACK_INT(IM_RX_OVRN_INT);
+			lp->stats.rx_errors++;
+			lp->stats.rx_fifo_errors++;
+		} else if (status & IM_EPH_INT) {
+			smc_eph_interrupt(dev);
+		} else if (status & IM_MDINT) {
+			SMC_ACK_INT(IM_MDINT);
+			smc_phy_interrupt(dev);
+		} else if (status & IM_ERCV_INT) {
+			SMC_ACK_INT(IM_ERCV_INT);
+			PRINTK("%s: UNSUPPORTED: ERCV INTERRUPT \n", dev->name);
+		}
+	} while (--timeout);
+
+	/* restore register states */
+	SMC_SET_PTR(saved_pointer);
+	SMC_SET_INT_MASK(mask);
+
+	spin_unlock(&lp->lock);
+
+	DBG(3, "%s: Interrupt done (%d loops)\n", dev->name, 8-timeout);
+
+	/*
+	 * We return IRQ_HANDLED unconditionally here even if there was
+	 * nothing to do.  There is a possibility that a packet might
+	 * get enqueued into the chip right after TX_EMPTY_INT is raised
+	 * but just before the CPU acknowledges the IRQ.
+	 * Better take an unneeded IRQ in some occasions than complexifying
+	 * the code for all cases.
+	 */
+	return IRQ_HANDLED;
+}
+
+#ifdef CONFIG_NET_POLL_CONTROLLER
+/*
+ * Polling receive - used by netconsole and other diagnostic tools
+ * to allow network i/o with interrupts disabled.
+ */
+static void smc_poll_controller(struct net_device *dev)
+{
+	disable_irq(dev->irq);
+	smc_interrupt(dev->irq, dev, NULL);
+	enable_irq(dev->irq);
+}
+#endif
+
+/* Our watchdog timed out. Called by the networking layer */
+static void smc_timeout(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+	int status, mask, meminfo, fifo;
+
+	DBG(2, "%s: %s\n", dev->name, __FUNCTION__);
+
+	spin_lock_irq(&lp->lock);
+	status = SMC_GET_INT();
+	mask = SMC_GET_INT_MASK();
+	fifo = SMC_GET_FIFO();
+	SMC_SELECT_BANK(0);
+	meminfo = SMC_GET_MIR();
+	SMC_SELECT_BANK(2);
+	spin_unlock_irq(&lp->lock);
+	PRINTK( "%s: INT 0x%02x MASK 0x%02x MEM 0x%04x FIFO 0x%04x\n",
+		dev->name, status, mask, meminfo, fifo );
+
+	smc_reset(dev);
+	smc_enable(dev);
+
+	/*
+	 * Reconfiguring the PHY doesn't seem like a bad idea here, but
+	 * smc_phy_configure() calls msleep() which calls schedule_timeout()
+	 * which calls schedule().  Hence we use a work queue.
+	 */
+	if (lp->phy_type != 0) {
+		if (schedule_work(&lp->phy_configure)) {
+			lp->work_pending = 1;
+		}
+	}
+
+	/* We can accept TX packets again */
+	dev->trans_start = jiffies;
+	netif_wake_queue(dev);
+}
+
+/*
+ * This routine will, depending on the values passed to it,
+ * either make it accept multicast packets, go into
+ * promiscuous mode (for TCPDUMP and cousins) or accept
+ * a select set of multicast packets
+ */
+static void smc_set_multicast_list(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	void __iomem *ioaddr = lp->base;
+	unsigned char multicast_table[8];
+	int update_multicast = 0;
+
+	DBG(2, "%s: %s\n", dev->name, __FUNCTION__);
+
+	if (dev->flags & IFF_PROMISC) {
+		DBG(2, "%s: RCR_PRMS\n", dev->name);
+		lp->rcr_cur_mode |= RCR_PRMS;
+	}
+
+/* BUG?  I never disable promiscuous mode if multicasting was turned on.
+   Now, I turn off promiscuous mode, but I don't do anything to multicasting
+   when promiscuous mode is turned on.
+*/
+
+	/*
+	 * Here, I am setting this to accept all multicast packets.
+	 * I don't need to zero the multicast table, because the flag is
+	 * checked before the table is
+	 */
+	else if (dev->flags & IFF_ALLMULTI || dev->mc_count > 16) {
+		DBG(2, "%s: RCR_ALMUL\n", dev->name);
+		lp->rcr_cur_mode |= RCR_ALMUL;
+	}
+
+	/*
+	 * This sets the internal hardware table to filter out unwanted
+	 * multicast packets before they take up memory.
+	 *
+	 * The SMC chip uses a hash table where the high 6 bits of the CRC of
+	 * address are the offset into the table.  If that bit is 1, then the
+	 * multicast packet is accepted.  Otherwise, it's dropped silently.
+	 *
+	 * To use the 6 bits as an offset into the table, the high 3 bits are
+	 * the number of the 8 bit register, while the low 3 bits are the bit
+	 * within that register.
+	 */
+	else if (dev->mc_count)  {
+		int i;
+		struct dev_mc_list *cur_addr;
+
+		/* table for flipping the order of 3 bits */
+		static const unsigned char invert3[] = {0, 4, 2, 6, 1, 5, 3, 7};
+
+		/* start with a table of all zeros: reject all */
+		memset(multicast_table, 0, sizeof(multicast_table));
+
+		cur_addr = dev->mc_list;
+		for (i = 0; i < dev->mc_count; i++, cur_addr = cur_addr->next) {
+			int position;
+
+			/* do we have a pointer here? */
+			if (!cur_addr)
+				break;
+			/* make sure this is a multicast address -
+		   	   shouldn't this be a given if we have it here ? */
+			if (!(*cur_addr->dmi_addr & 1))
+				continue;
+
+			/* only use the low order bits */
+			position = crc32_le(~0, cur_addr->dmi_addr, 6) & 0x3f;
+
+			/* do some messy swapping to put the bit in the right spot */
+			multicast_table[invert3[position&7]] |=
+				(1<<invert3[(position>>3)&7]);
+		}
+
+		/* be sure I get rid of flags I might have set */
+		lp->rcr_cur_mode &= ~(RCR_PRMS | RCR_ALMUL);
+
+		/* now, the table can be loaded into the chipset */
+		update_multicast = 1;
+	} else  {
+		DBG(2, "%s: ~(RCR_PRMS|RCR_ALMUL)\n", dev->name);
+		lp->rcr_cur_mode &= ~(RCR_PRMS | RCR_ALMUL);
+
+		/*
+		 * since I'm disabling all multicast entirely, I need to
+		 * clear the multicast list
+		 */
+		memset(multicast_table, 0, sizeof(multicast_table));
+		update_multicast = 1;
+	}
+
+	spin_lock_irq(&lp->lock);
+	SMC_SELECT_BANK(0);
+	SMC_SET_RCR(lp->rcr_cur_mode);
+	if (update_multicast) {
+		SMC_SELECT_BANK(3);
+		SMC_SET_MCAST(multicast_table);
+	}
+	SMC_SELECT_BANK(2);
+	spin_unlock_irq(&lp->lock);
+}
+
+
+/*
+ * Open and Initialize the board
+ *
+ * Set up everything, reset the card, etc..
+ */
+static int
+smc_open(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+
+	DBG(2, "%s: %s\n", dev->name, __FUNCTION__);
+
+	/*
+	 * Check that the address is valid.  If its not, refuse
+	 * to bring the device up.  The user must specify an
+	 * address using ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx
+	 */
+	if (!is_valid_ether_addr(dev->dev_addr)) {
+		PRINTK("%s: no valid ethernet hw addr\n", __FUNCTION__);
+		return -EINVAL;
+	}
+
+	/* Setup the default Register Modes */
+	lp->tcr_cur_mode = TCR_DEFAULT;
+	lp->rcr_cur_mode = RCR_DEFAULT;
+	lp->rpc_cur_mode = RPC_DEFAULT;
+
+	/*
+	 * If we are not using a MII interface, we need to
+	 * monitor our own carrier signal to detect faults.
+	 */
+	if (lp->phy_type == 0)
+		lp->tcr_cur_mode |= TCR_MON_CSN;
+
+	/* reset the hardware */
+	smc_reset(dev);
+	smc_enable(dev);
+
+	/* Configure the PHY, initialize the link state */
+	if (lp->phy_type != 0)
+		smc_phy_configure(dev);
+	else {
+		spin_lock_irq(&lp->lock);
+		smc_10bt_check_media(dev, 1);
+		spin_unlock_irq(&lp->lock);
+	}
+
+	netif_start_queue(dev);
+	return 0;
+}
+
+/*
+ * smc_close
+ *
+ * this makes the board clean up everything that it can
+ * and not talk to the outside world.   Caused by
+ * an 'ifconfig ethX down'
+ */
+static int smc_close(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+
+	DBG(2, "%s: %s\n", dev->name, __FUNCTION__);
+
+	netif_stop_queue(dev);
+	netif_carrier_off(dev);
+
+	/* clear everything */
+	smc_shutdown(dev);
+
+	smc_phy_powerdown(dev);
+
+	if (lp->pending_tx_skb) {
+		dev_kfree_skb(lp->pending_tx_skb);
+		lp->pending_tx_skb = NULL;
+	}
+
+	return 0;
+}
+
+/*
+ * Get the current statistics.
+ * This may be called with the card open or closed.
+ */
+static struct net_device_stats *smc_query_statistics(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+
+	DBG(2, "%s: %s\n", dev->name, __FUNCTION__);
+
+	return &lp->stats;
+}
+
+/*
+ * Ethtool support
+ */
+static int
+smc_ethtool_getsettings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	int ret;
+
+	cmd->maxtxpkt = 1;
+	cmd->maxrxpkt = 1;
+
+	if (lp->phy_type != 0) {
+		spin_lock_irq(&lp->lock);
+		ret = mii_ethtool_gset(&lp->mii, cmd);
+		spin_unlock_irq(&lp->lock);
+	} else {
+		cmd->supported = SUPPORTED_10baseT_Half |
+				 SUPPORTED_10baseT_Full |
+				 SUPPORTED_TP | SUPPORTED_AUI;
+
+		if (lp->ctl_rspeed == 10)
+			cmd->speed = SPEED_10;
+		else if (lp->ctl_rspeed == 100)
+			cmd->speed = SPEED_100;
+
+		cmd->autoneg = AUTONEG_DISABLE;
+		cmd->transceiver = XCVR_INTERNAL;
+		cmd->port = 0;
+		cmd->duplex = lp->tcr_cur_mode & TCR_SWFDUP ? DUPLEX_FULL : DUPLEX_HALF;
+
+		ret = 0;
+	}
+
+	return ret;
+}
+
+static int
+smc_ethtool_setsettings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	int ret;
+
+	if (lp->phy_type != 0) {
+		spin_lock_irq(&lp->lock);
+		ret = mii_ethtool_sset(&lp->mii, cmd);
+		spin_unlock_irq(&lp->lock);
+	} else {
+		if (cmd->autoneg != AUTONEG_DISABLE ||
+		    cmd->speed != SPEED_10 ||
+		    (cmd->duplex != DUPLEX_HALF && cmd->duplex != DUPLEX_FULL) ||
+		    (cmd->port != PORT_TP && cmd->port != PORT_AUI))
+			return -EINVAL;
+
+//		lp->port = cmd->port;
+		lp->ctl_rfduplx = cmd->duplex == DUPLEX_FULL;
+
+//		if (netif_running(dev))
+//			smc_set_port(dev);
+
+		ret = 0;
+	}
+
+	return ret;
+}
+
+static void
+smc_ethtool_getdrvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
+{
+	strncpy(info->driver, CARDNAME, sizeof(info->driver));
+	strncpy(info->version, version, sizeof(info->version));
+	strncpy(info->bus_info, dev->class_dev.dev->bus_id, sizeof(info->bus_info));
+}
+
+static int smc_ethtool_nwayreset(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	int ret = -EINVAL;
+
+	if (lp->phy_type != 0) {
+		spin_lock_irq(&lp->lock);
+		ret = mii_nway_restart(&lp->mii);
+		spin_unlock_irq(&lp->lock);
+	}
+
+	return ret;
+}
+
+static u32 smc_ethtool_getmsglevel(struct net_device *dev)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	return lp->msg_enable;
+}
+
+static void smc_ethtool_setmsglevel(struct net_device *dev, u32 level)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	lp->msg_enable = level;
+}
+
+static struct ethtool_ops smc_ethtool_ops = {
+	.get_settings	= smc_ethtool_getsettings,
+	.set_settings	= smc_ethtool_setsettings,
+	.get_drvinfo	= smc_ethtool_getdrvinfo,
+
+	.get_msglevel	= smc_ethtool_getmsglevel,
+	.set_msglevel	= smc_ethtool_setmsglevel,
+	.nway_reset	= smc_ethtool_nwayreset,
+	.get_link	= ethtool_op_get_link,
+//	.get_eeprom	= smc_ethtool_geteeprom,
+//	.set_eeprom	= smc_ethtool_seteeprom,
+};
+
+/*
+ * smc_findirq
+ *
+ * This routine has a simple purpose -- make the SMC chip generate an
+ * interrupt, so an auto-detect routine can detect it, and find the IRQ,
+ */
+/*
+ * does this still work?
+ *
+ * I just deleted auto_irq.c, since it was never built...
+ *   --jgarzik
+ */
+static int __init smc_findirq(void __iomem *ioaddr)
+{
+	int timeout = 20;
+	unsigned long cookie;
+
+	DBG(2, "%s: %s\n", CARDNAME, __FUNCTION__);
+
+	cookie = probe_irq_on();
+
+	/*
+	 * What I try to do here is trigger an ALLOC_INT. This is done
+	 * by allocating a small chunk of memory, which will give an interrupt
+	 * when done.
+	 */
+	/* enable ALLOCation interrupts ONLY */
+	SMC_SELECT_BANK(2);
+	SMC_SET_INT_MASK(IM_ALLOC_INT);
+
+	/*
+ 	 * Allocate 512 bytes of memory.  Note that the chip was just
+	 * reset so all the memory is available
+	 */
+	SMC_SET_MMU_CMD(MC_ALLOC | 1);
+
+	/*
+	 * Wait until positive that the interrupt has been generated
+	 */
+	do {
+		int int_status;
+		udelay(10);
+		int_status = SMC_GET_INT();
+		if (int_status & IM_ALLOC_INT)
+			break;		/* got the interrupt */
+	} while (--timeout);
+
+	/*
+	 * there is really nothing that I can do here if timeout fails,
+	 * as autoirq_report will return a 0 anyway, which is what I
+	 * want in this case.   Plus, the clean up is needed in both
+	 * cases.
+	 */
+
+	/* and disable all interrupts again */
+	SMC_SET_INT_MASK(0);
+
+	/* and return what I found */
+	return probe_irq_off(cookie);
+}
+
+/*
+ * Function: smc_probe(unsigned long ioaddr)
+ *
+ * Purpose:
+ *	Tests to see if a given ioaddr points to an SMC91x chip.
+ *	Returns a 0 on success
+ *
+ * Algorithm:
+ *	(1) see if the high byte of BANK_SELECT is 0x33
+ * 	(2) compare the ioaddr with the base register's address
+ *	(3) see if I recognize the chip ID in the appropriate register
+ *
+ * Here I do typical initialization tasks.
+ *
+ * o  Initialize the structure if needed
+ * o  print out my vanity message if not done so already
+ * o  print out what type of hardware is detected
+ * o  print out the ethernet address
+ * o  find the IRQ
+ * o  set up my private data
+ * o  configure the dev structure with my subroutines
+ * o  actually GRAB the irq.
+ * o  GRAB the region
+ */
+static int __init smc_probe(struct net_device *dev, void __iomem *ioaddr)
+{
+	struct smc_local *lp = netdev_priv(dev);
+	static int version_printed = 0;
+	int i, retval;
+	unsigned int val, revision_register;
+	const char *version_string;
+
+	DBG(2, "%s: %s\n", CARDNAME, __FUNCTION__);
+
+	/* First, see if the high byte is 0x33 */
+	val = SMC_CURRENT_BANK();
+	DBG(2, "%s: bank signature probe returned 0x%04x\n", CARDNAME, val);
+	if ((val & 0xFF00) != 0x3300) {
+		if ((val & 0xFF) == 0x33) {
+			printk(KERN_WARNING
+				"%s: Detected possible byte-swapped interface"
+				" at IOADDR %p\n", CARDNAME, ioaddr);
+		}
+		retval = -ENODEV;
+		goto err_out;
+	}
+
+	/*
+	 * The above MIGHT indicate a device, but I need to write to
+	 * further test this.
+	 */
+	SMC_SELECT_BANK(0);
+	val = SMC_CURRENT_BANK();
+	if ((val & 0xFF00) != 0x3300) {
+		retval = -ENODEV;
+		goto err_out;
+	}
+
+	/*
+	 * well, we've already written once, so hopefully another
+	 * time won't hurt.  This time, I need to switch the bank
+	 * register to bank 1, so I can access the base address
+	 * register
+	 */
+	SMC_SELECT_BANK(1);
+	val = SMC_GET_BASE();
+	val = ((val & 0x1F00) >> 3) << SMC_IO_SHIFT;
+	if (((unsigned long)ioaddr & ((PAGE_SIZE-1)<<SMC_IO_SHIFT)) != val) { /*XXX: WTF? */
+		printk("%s: IOADDR %p doesn't match configuration (%x).\n",
+			CARDNAME, ioaddr, val);
+	}
+
+	/*
+	 * check if the revision register is something that I
+	 * recognize.  These might need to be added to later,
+	 * as future revisions could be added.
+	 */
+	SMC_SELECT_BANK(3);
+	revision_register = SMC_GET_REV();
+	DBG(2, "%s: revision = 0x%04x\n", CARDNAME, revision_register);
+	version_string = chip_ids[ (revision_register >> 4) & 0xF];
+	if (!version_string || (revision_register & 0xff00) != 0x3300) {
+		/* I don't recognize this chip, so... */
+		printk("%s: IO %p: Unrecognized revision register 0x%04x"
+			", Contact author.\n", CARDNAME,
+			ioaddr, revision_register);
+
+		retval = -ENODEV;
+		goto err_out;
+	}
+
+	/* At this point I'll assume that the chip is an SMC91x. */
+	if (version_printed++ == 0)
+		printk("%s", version);
+
+	/* fill in some of the fields */
+	dev->base_addr = (unsigned long)ioaddr;
+	lp->base = ioaddr;
+	lp->version = revision_register & 0xff;
+	spin_lock_init(&lp->lock);
+
+	/* Get the MAC address */
+	SMC_SELECT_BANK(1);
+	SMC_GET_MAC_ADDR(dev->dev_addr);
+
+	/* now, reset the chip, and put it into a known state */
+	smc_reset(dev);
+
+	/*
+	 * If dev->irq is 0, then the device has to be banged on to see
+	 * what the IRQ is.
+ 	 *
+	 * This banging doesn't always detect the IRQ, for unknown reasons.
+	 * a workaround is to reset the chip and try again.
+	 *
+	 * Interestingly, the DOS packet driver *SETS* the IRQ on the card to
+	 * be what is requested on the command line.   I don't do that, mostly
+	 * because the card that I have uses a non-standard method of accessing
+	 * the IRQs, and because this _should_ work in most configurations.
+	 *
+	 * Specifying an IRQ is done with the assumption that the user knows
+	 * what (s)he is doing.  No checking is done!!!!
+	 */
+	if (dev->irq < 1) {
+		int trials;
+
+		trials = 3;
+		while (trials--) {
+			dev->irq = smc_findirq(ioaddr);
+			if (dev->irq)
+				break;
+			/* kick the card and try again */
+			smc_reset(dev);
+		}
+	}
+	if (dev->irq == 0) {
+		printk("%s: Couldn't autodetect your IRQ. Use irq=xx.\n",
+			dev->name);
+		retval = -ENODEV;
+		goto err_out;
+	}
+	dev->irq = irq_canonicalize(dev->irq);
+
+	/* Fill in the fields of the device structure with ethernet values. */
+	ether_setup(dev);
+
+	dev->open = smc_open;
+	dev->stop = smc_close;
+	dev->hard_start_xmit = smc_hard_start_xmit;
+	dev->tx_timeout = smc_timeout;
+	dev->watchdog_timeo = msecs_to_jiffies(watchdog);
+	dev->get_stats = smc_query_statistics;
+	dev->set_multicast_list = smc_set_multicast_list;
+	dev->ethtool_ops = &smc_ethtool_ops;
+#ifdef CONFIG_NET_POLL_CONTROLLER
+	dev->poll_controller = smc_poll_controller;
+#endif
+
+	tasklet_init(&lp->tx_task, smc_hardware_send_pkt, (unsigned long)dev);
+	INIT_WORK(&lp->phy_configure, smc_phy_configure, dev);
+	lp->mii.phy_id_mask = 0x1f;
+	lp->mii.reg_num_mask = 0x1f;
+	lp->mii.force_media = 0;
+	lp->mii.full_duplex = 0;
+	lp->mii.dev = dev;
+	lp->mii.mdio_read = smc_phy_read;
+	lp->mii.mdio_write = smc_phy_write;
+
+	/*
+	 * Locate the phy, if any.
+	 */
+	if (lp->version >= (CHIP_91100 << 4))
+		smc_phy_detect(dev);
+
+	/* Set default parameters */
+	lp->msg_enable = NETIF_MSG_LINK;
+	lp->ctl_rfduplx = 0;
+	lp->ctl_rspeed = 10;
+
+	if (lp->version >= (CHIP_91100 << 4)) {
+		lp->ctl_rfduplx = 1;
+		lp->ctl_rspeed = 100;
+	}
+
+	/* Grab the IRQ */
+      	retval = request_irq(dev->irq, &smc_interrupt, 0, dev->name, dev);
+      	if (retval)
+      		goto err_out;
+
+	set_irq_type(dev->irq, IRQT_RISING);
+
+#ifdef SMC_USE_PXA_DMA
+	{
+		int dma = pxa_request_dma(dev->name, DMA_PRIO_LOW,
+					  smc_pxa_dma_irq, NULL);
+		if (dma >= 0)
+			dev->dma = dma;
+	}
+#endif
+
+	retval = register_netdev(dev);
+	if (retval == 0) {
+		/* now, print out the card info, in a short format.. */
+		printk("%s: %s (rev %d) at %p IRQ %d",
+			dev->name, version_string, revision_register & 0x0f,
+			lp->base, dev->irq);
+
+		if (dev->dma != (unsigned char)-1)
+			printk(" DMA %d", dev->dma);
+
+		printk("%s%s\n", nowait ? " [nowait]" : "",
+			THROTTLE_TX_PKTS ? " [throttle_tx]" : "");
+
+		if (!is_valid_ether_addr(dev->dev_addr)) {
+			printk("%s: Invalid ethernet MAC address.  Please "
+			       "set using ifconfig\n", dev->name);
+		} else {
+			/* Print the Ethernet address */
+			printk("%s: Ethernet addr: ", dev->name);
+			for (i = 0; i < 5; i++)
+				printk("%2.2x:", dev->dev_addr[i]);
+			printk("%2.2x\n", dev->dev_addr[5]);
+		}
+
+		if (lp->phy_type == 0) {
+			PRINTK("%s: No PHY found\n", dev->name);
+		} else if ((lp->phy_type & 0xfffffff0) == 0x0016f840) {
+			PRINTK("%s: PHY LAN83C183 (LAN91C111 Internal)\n", dev->name);
+		} else if ((lp->phy_type & 0xfffffff0) == 0x02821c50) {
+			PRINTK("%s: PHY LAN83C180\n", dev->name);
+		}
+	}
+
+err_out:
+#ifdef SMC_USE_PXA_DMA
+	if (retval && dev->dma != (unsigned char)-1)
+		pxa_free_dma(dev->dma);
+#endif
+	return retval;
+}
+
+static int smc_enable_device(struct platform_device *pdev)
+{
+	unsigned long flags;
+	unsigned char ecor, ecsr;
+	void __iomem *addr;
+	struct resource * res;
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib");
+	if (!res)
+		return 0;
+
+	/*
+	 * Map the attribute space.  This is overkill, but clean.
+	 */
+	addr = ioremap(res->start, ATTRIB_SIZE);
+	if (!addr)
+		return -ENOMEM;
+
+	/*
+	 * Reset the device.  We must disable IRQs around this
+	 * since a reset causes the IRQ line become active.
+	 */
+	local_irq_save(flags);
+	ecor = readb(addr + (ECOR << SMC_IO_SHIFT)) & ~ECOR_RESET;
+	writeb(ecor | ECOR_RESET, addr + (ECOR << SMC_IO_SHIFT));
+	readb(addr + (ECOR << SMC_IO_SHIFT));
+
+	/*
+	 * Wait 100us for the chip to reset.
+	 */
+	udelay(100);
+
+	/*
+	 * The device will ignore all writes to the enable bit while
+	 * reset is asserted, even if the reset bit is cleared in the
+	 * same write.  Must clear reset first, then enable the device.
+	 */
+	writeb(ecor, addr + (ECOR << SMC_IO_SHIFT));
+	writeb(ecor | ECOR_ENABLE, addr + (ECOR << SMC_IO_SHIFT));
+
+	/*
+	 * Set the appropriate byte/word mode.
+	 */
+	ecsr = readb(addr + (ECSR << SMC_IO_SHIFT)) & ~ECSR_IOIS8;
+#ifndef SMC_CAN_USE_16BIT
+	ecsr |= ECSR_IOIS8;
+#endif
+	writeb(ecsr, addr + (ECSR << SMC_IO_SHIFT));
+	local_irq_restore(flags);
+
+	iounmap(addr);
+
+	/*
+	 * Wait for the chip to wake up.  We could poll the control
+	 * register in the main register space, but that isn't mapped
+	 * yet.  We know this is going to take 750us.
+	 */
+	msleep(1);
+
+	return 0;
+}
+
+static int smc_request_attrib(struct platform_device *pdev)
+{
+	struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib");
+
+	if (!res)
+		return 0;
+
+	if (!request_mem_region(res->start, ATTRIB_SIZE, CARDNAME))
+		return -EBUSY;
+
+	return 0;
+}
+
+static void smc_release_attrib(struct platform_device *pdev)
+{
+	struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-attrib");
+
+	if (res)
+		release_mem_region(res->start, ATTRIB_SIZE);
+}
+
+#ifdef SMC_CAN_USE_DATACS
+static void smc_request_datacs(struct platform_device *pdev, struct net_device *ndev)
+{
+	struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-data32");
+	struct smc_local *lp = netdev_priv(ndev);
+
+	if (!res)
+		return;
+
+	if(!request_mem_region(res->start, SMC_DATA_EXTENT, CARDNAME)) {
+		printk(KERN_INFO "%s: failed to request datacs memory region.\n", CARDNAME);
+		return;
+	}
+
+	lp->datacs = ioremap(res->start, SMC_DATA_EXTENT);
+}
+
+static void smc_release_datacs(struct platform_device *pdev, struct net_device *ndev)
+{
+	struct smc_local *lp = netdev_priv(ndev);
+	struct resource * res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-data32");
+
+	if (lp->datacs)
+		iounmap(lp->datacs);
+
+	lp->datacs = NULL;
+
+	if (res)
+		release_mem_region(res->start, SMC_DATA_EXTENT);
+}
+#else
+static void smc_request_datacs(struct platform_device *pdev, struct net_device *ndev) {}
+static void smc_release_datacs(struct platform_device *pdev, struct net_device *ndev) {}
+#endif
+
+/*
+ * smc_init(void)
+ *   Input parameters:
+ *	dev->base_addr == 0, try to find all possible locations
+ *	dev->base_addr > 0x1ff, this is the address to check
+ *	dev->base_addr == <anything else>, return failure code
+ *
+ *   Output:
+ *	0 --> there is a device
+ *	anything else, error
+ */
+static int smc_drv_probe(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct net_device *ndev;
+	struct resource *res;
+	unsigned int __iomem *addr;
+	int ret;
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs");
+	if (!res)
+		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		ret = -ENODEV;
+		goto out;
+	}
+
+
+	if (!request_mem_region(res->start, SMC_IO_EXTENT, CARDNAME)) {
+		ret = -EBUSY;
+		goto out;
+	}
+
+	ndev = alloc_etherdev(sizeof(struct smc_local));
+	if (!ndev) {
+		printk("%s: could not allocate device.\n", CARDNAME);
+		ret = -ENOMEM;
+		goto out_release_io;
+	}
+	SET_MODULE_OWNER(ndev);
+	SET_NETDEV_DEV(ndev, dev);
+
+	ndev->dma = (unsigned char)-1;
+	ndev->irq = platform_get_irq(pdev, 0);
+
+	ret = smc_request_attrib(pdev);
+	if (ret)
+		goto out_free_netdev;
+#if defined(CONFIG_SA1100_ASSABET)
+	NCR_0 |= NCR_ENET_OSC_EN;
+#endif
+	ret = smc_enable_device(pdev);
+	if (ret)
+		goto out_release_attrib;
+
+	addr = ioremap(res->start, SMC_IO_EXTENT);
+	if (!addr) {
+		ret = -ENOMEM;
+		goto out_release_attrib;
+	}
+
+	dev_set_drvdata(dev, ndev);
+	ret = smc_probe(ndev, addr);
+	if (ret != 0)
+		goto out_iounmap;
+#ifdef SMC_USE_PXA_DMA
+	else {
+		struct smc_local *lp = netdev_priv(ndev);
+		lp->physaddr = res->start;
+	}
+#endif
+
+	smc_request_datacs(pdev, ndev);
+
+	return 0;
+
+ out_iounmap:
+	dev_set_drvdata(dev, NULL);
+	iounmap(addr);
+ out_release_attrib:
+	smc_release_attrib(pdev);
+ out_free_netdev:
+	free_netdev(ndev);
+ out_release_io:
+	release_mem_region(res->start, SMC_IO_EXTENT);
+ out:
+	printk("%s: not found (%d).\n", CARDNAME, ret);
+
+	return ret;
+}
+
+static int smc_drv_remove(struct device *dev)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct net_device *ndev = dev_get_drvdata(dev);
+	struct smc_local *lp = netdev_priv(ndev);
+	struct resource *res;
+
+	dev_set_drvdata(dev, NULL);
+
+	unregister_netdev(ndev);
+
+	free_irq(ndev->irq, ndev);
+
+#ifdef SMC_USE_PXA_DMA
+	if (ndev->dma != (unsigned char)-1)
+		pxa_free_dma(ndev->dma);
+#endif
+	iounmap(lp->base);
+
+	smc_release_datacs(pdev,ndev);
+	smc_release_attrib(pdev);
+
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs");
+	if (!res)
+		platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	release_mem_region(res->start, SMC_IO_EXTENT);
+
+	free_netdev(ndev);
+
+	return 0;
+}
+
+static int smc_drv_suspend(struct device *dev, u32 state, u32 level)
+{
+	struct net_device *ndev = dev_get_drvdata(dev);
+
+	if (ndev && level == SUSPEND_DISABLE) {
+		if (netif_running(ndev)) {
+			netif_device_detach(ndev);
+			smc_shutdown(ndev);
+			smc_phy_powerdown(ndev);
+		}
+	}
+	return 0;
+}
+
+static int smc_drv_resume(struct device *dev, u32 level)
+{
+	struct platform_device *pdev = to_platform_device(dev);
+	struct net_device *ndev = dev_get_drvdata(dev);
+
+	if (ndev && level == RESUME_ENABLE) {
+		struct smc_local *lp = netdev_priv(ndev);
+		smc_enable_device(pdev);
+		if (netif_running(ndev)) {
+			smc_reset(ndev);
+			smc_enable(ndev);
+			if (lp->phy_type != 0)
+				smc_phy_configure(ndev);
+			netif_device_attach(ndev);
+		}
+	}
+	return 0;
+}
+
+static struct device_driver smc_driver = {
+	.name		= CARDNAME,
+	.bus		= &platform_bus_type,
+	.probe		= smc_drv_probe,
+	.remove		= smc_drv_remove,
+	.suspend	= smc_drv_suspend,
+	.resume		= smc_drv_resume,
+};
+
+static int __init smc_init(void)
+{
+#ifdef MODULE
+#ifdef CONFIG_ISA
+	if (io == -1)
+		printk(KERN_WARNING 
+			"%s: You shouldn't use auto-probing with insmod!\n",
+			CARDNAME);
+#endif
+#endif
+
+	return driver_register(&smc_driver);
+}
+
+static void __exit smc_cleanup(void)
+{
+	driver_unregister(&smc_driver);
+}
+
+module_init(smc_init);
+module_exit(smc_cleanup);