Linux-2.6.12-rc2v2.6.12-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, 1631 insertions, 0 deletions

diff --git a/drivers/net/smc9194.c b/drivers/net/smc9194.c
new file mode 100644
index 00000000000..f86697da04d
--- /dev/null
+++ b/drivers/net/smc9194.c
@@ -0,0 +1,1631 @@
+/*------------------------------------------------------------------------
+ . smc9194.c
+ . This is a driver for SMC's 9000 series of Ethernet cards.
+ .
+ . Copyright (C) 1996 by Erik Stahlman
+ . This software may be used and distributed according to the terms
+ . of the GNU General Public License, incorporated herein by reference.
+ .
+ . "Features" of the SMC chip:
+ .   4608 byte packet memory. ( for the 91C92.  Others have more )
+ .   EEPROM for configuration
+ .   AUI/TP selection  ( mine has 10Base2/10BaseT select )
+ .
+ . Arguments:
+ . 	io		 = for the base address
+ .	irq	 = for the IRQ
+ .	ifport = 0 for autodetect, 1 for TP, 2 for AUI ( or 10base2 )
+ .
+ . author:
+ . 	Erik Stahlman				( erik@vt.edu )
+ . contributors:
+ .      Arnaldo Carvalho de Melo <acme@conectiva.com.br>
+ .
+ . Hardware multicast code from Peter Cammaert ( pc@denkart.be )
+ .
+ . Sources:
+ .    o   SMC databook
+ .    o   skeleton.c by Donald Becker ( becker@scyld.com )
+ .    o   ( a LOT of advice from Becker as well )
+ .
+ . History:
+ .	12/07/95  Erik Stahlman  written, got receive/xmit handled
+ . 	01/03/96  Erik Stahlman  worked out some bugs, actually usable!!! :-)
+ .	01/06/96  Erik Stahlman	 cleaned up some, better testing, etc
+ .	01/29/96  Erik Stahlman	 fixed autoirq, added multicast
+ . 	02/01/96  Erik Stahlman	 1. disabled all interrupts in smc_reset
+ .		   		 2. got rid of post-decrementing bug -- UGH.
+ .	02/13/96  Erik Stahlman  Tried to fix autoirq failure.  Added more
+ .				 descriptive error messages.
+ .	02/15/96  Erik Stahlman  Fixed typo that caused detection failure
+ . 	02/23/96  Erik Stahlman	 Modified it to fit into kernel tree
+ .				 Added support to change hardware address
+ .				 Cleared stats on opens
+ .	02/26/96  Erik Stahlman	 Trial support for Kernel 1.2.13
+ .				 Kludge for automatic IRQ detection
+ .	03/04/96  Erik Stahlman	 Fixed kernel 1.3.70 +
+ .				 Fixed bug reported by Gardner Buchanan in
+ .				   smc_enable, with outw instead of outb
+ .	03/06/96  Erik Stahlman  Added hardware multicast from Peter Cammaert
+ .	04/14/00  Heiko Pruessing (SMA Regelsysteme)  Fixed bug in chip memory
+ .				 allocation
+ .      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"
+ .      11/08/01 Matt Domsch     Use common crc32 function
+ ----------------------------------------------------------------------------*/
+
+static const char version[] =
+	"smc9194.c:v0.14 12/15/00 by Erik Stahlman (erik@vt.edu)\n";
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/in.h>
+#include <linux/slab.h>
+#include <linux/string.h>
+#include <linux/init.h>
+#include <linux/crc32.h>
+#include <linux/errno.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/skbuff.h>
+#include <linux/bitops.h>
+
+#include <asm/io.h>
+
+#include "smc9194.h"
+
+#define DRV_NAME "smc9194"
+
+/*------------------------------------------------------------------------
+ .
+ . Configuration options, for the experienced user to change.
+ .
+ -------------------------------------------------------------------------*/
+
+/*
+ . Do you want to use 32 bit xfers?  This should work on all chips, as
+ . the chipset is designed to accommodate them.
+*/
+#ifdef __sh__
+#undef USE_32_BIT
+#else
+#define USE_32_BIT 1
+#endif
+
+#if defined(__H8300H__) || defined(__H8300S__)
+#define NO_AUTOPROBE
+#undef insl
+#undef outsl
+#define insl(a,b,l)  io_insl_noswap(a,b,l)
+#define outsl(a,b,l) io_outsl_noswap(a,b,l)
+#endif
+
+/*
+ .the SMC9194 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.
+*/
+
+struct devlist {
+	unsigned int port;
+	unsigned int irq;
+};
+
+#if defined(CONFIG_H8S_EDOSK2674)
+static struct devlist smc_devlist[] __initdata = {
+	{.port = 0xf80000, .irq = 16},
+	{.port = 0,        .irq = 0 },
+};
+#else
+static struct devlist smc_devlist[] __initdata = {
+	{.port = 0x200, .irq = 0},
+	{.port = 0x220, .irq = 0},
+	{.port = 0x240, .irq = 0},
+	{.port = 0x260, .irq = 0},
+	{.port = 0x280, .irq = 0},
+	{.port = 0x2A0, .irq = 0},
+	{.port = 0x2C0, .irq = 0},
+	{.port = 0x2E0, .irq = 0},
+	{.port = 0x300, .irq = 0},
+	{.port = 0x320, .irq = 0},
+	{.port = 0x340, .irq = 0},
+	{.port = 0x360, .irq = 0},
+	{.port = 0x380, .irq = 0},
+	{.port = 0x3A0, .irq = 0},
+	{.port = 0x3C0, .irq = 0},
+	{.port = 0x3E0, .irq = 0},
+	{.port = 0,     .irq = 0},
+};
+#endif
+/*
+ . 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
+
+/*
+ . DEBUGGING LEVELS
+ .
+ . 0 for normal operation
+ . 1 for slightly more details
+ . >2 for various levels of increasingly useless information
+ .    2 for interrupt tracking, status flags
+ .    3 for packet dumps, etc.
+*/
+#define SMC_DEBUG 0
+
+#if (SMC_DEBUG > 2 )
+#define PRINTK3(x) printk x
+#else
+#define PRINTK3(x)
+#endif
+
+#if SMC_DEBUG > 1
+#define PRINTK2(x) printk x
+#else
+#define PRINTK2(x)
+#endif
+
+#ifdef SMC_DEBUG
+#define PRINTK(x) printk x
+#else
+#define PRINTK(x)
+#endif
+
+
+/*------------------------------------------------------------------------
+ .
+ . The internal workings of the driver.  If you are changing anything
+ . here with the SMC stuff, you should have the datasheet and known
+ . what you are doing.
+ .
+ -------------------------------------------------------------------------*/
+#define CARDNAME "SMC9194"
+
+
+/* store this information for the driver.. */
+struct smc_local {
+	/*
+ 	   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;
+
+	/*
+	   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 * saved_skb;
+
+	/*
+ 	 . This keeps track of how many packets that I have
+ 	 . sent out.  When an TX_EMPTY interrupt comes, I know
+	 . that all of these have been sent.
+	*/
+	int	packets_waiting;
+};
+
+
+/*-----------------------------------------------------------------
+ .
+ .  The driver can be entered at any of the following entry points.
+ .
+ .------------------------------------------------------------------  */
+
+/*
+ . This is called by  register_netdev().  It is responsible for
+ . checking the portlist for the SMC9000 series chipset.  If it finds
+ . one, then it will initialize the device, find the hardware information,
+ . and sets up the appropriate device parameters.
+ . NOTE: Interrupts are *OFF* when this procedure is called.
+ .
+ . NB:This shouldn't be static since it is referred to externally.
+*/
+struct net_device *smc_init(int unit);
+
+/*
+ . The kernel calls this function when someone wants to use the device,
+ . typically 'ifconfig ethX up'.
+*/
+static int smc_open(struct net_device *dev);
+
+/*
+ . Our watchdog timed out. Called by the networking layer
+*/
+static void smc_timeout(struct net_device *dev);
+
+/*
+ . This is called by the kernel in response to 'ifconfig ethX down'.  It
+ . is responsible for cleaning up everything that the open routine
+ . does, and maybe putting the card into a powerdown state.
+*/
+static int smc_close(struct net_device *dev);
+
+/*
+ . This routine allows the proc file system to query the driver's
+ . statistics.
+*/
+static struct net_device_stats * smc_query_statistics( struct net_device *dev);
+
+/*
+ . Finally, a call to set promiscuous mode ( for TCPDUMP and related
+ . programs ) and multicast modes.
+*/
+static void smc_set_multicast_list(struct net_device *dev);
+
+
+/*---------------------------------------------------------------
+ .
+ . Interrupt level calls..
+ .
+ ----------------------------------------------------------------*/
+
+/*
+ . Handles the actual interrupt
+*/
+static irqreturn_t smc_interrupt(int irq, void *, struct pt_regs *regs);
+/*
+ . This is a separate procedure to handle the receipt of a packet, to
+ . leave the interrupt code looking slightly cleaner
+*/
+static inline void smc_rcv( struct net_device *dev );
+/*
+ . This handles a TX interrupt, which is only called when an error
+ . relating to a packet is sent.
+*/
+static inline void smc_tx( struct net_device * dev );
+
+/*
+ ------------------------------------------------------------
+ .
+ . Internal routines
+ .
+ ------------------------------------------------------------
+*/
+
+/*
+ . Test if a given location contains a chip, trying to cause as
+ . little damage as possible if it's not a SMC chip.
+*/
+static int smc_probe(struct net_device *dev, int ioaddr);
+
+/*
+ . A rather simple routine to print out a packet for debugging purposes.
+*/
+#if SMC_DEBUG > 2
+static void print_packet( byte *, int );
+#endif
+
+#define tx_done(dev) 1
+
+/* this is called to actually send the packet to the chip */
+static void smc_hardware_send_packet( struct net_device * dev );
+
+/* 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 generates an interrupt when the card is ready for the
+ . packet */
+static int  smc_wait_to_send_packet( struct sk_buff * skb, struct net_device *dev );
+
+/* this does a soft reset on the device */
+static void smc_reset( int ioaddr );
+
+/* Enable Interrupts, Receive, and Transmit */
+static void smc_enable( int ioaddr );
+
+/* this puts the device in an inactive state */
+static void smc_shutdown( int ioaddr );
+
+/* This routine will find the IRQ of the driver if one is not
+ . specified in the input to the device.  */
+static int smc_findirq( int ioaddr );
+
+/*
+ . Function: smc_reset( int ioaddr )
+ . Purpose:
+ .  	This sets the SMC91xx chip to its normal state, hopefully from whatever
+ . 	mess that any other DOS driver has put it in.
+ .
+ . Maybe I should reset more registers to defaults in here?  SOFTRESET  should
+ . do that for me.
+ .
+ . Method:
+ .	1.  send a SOFT RESET
+ .	2.  wait for it to finish
+ .	3.  enable autorelease mode
+ .	4.  reset the memory management unit
+ .	5.  clear all interrupts
+ .
+*/
+static void smc_reset( int ioaddr )
+{
+	/* This resets the registers mostly to defaults, but doesn't
+	   affect EEPROM.  That seems unnecessary */
+	SMC_SELECT_BANK( 0 );
+	outw( RCR_SOFTRESET, ioaddr + RCR );
+
+	/* this should pause enough for the chip to be happy */
+	SMC_DELAY( );
+
+	/* Set the transmit and receive configuration registers to
+	   default values */
+	outw( RCR_CLEAR, ioaddr + RCR );
+	outw( TCR_CLEAR, ioaddr + TCR );
+
+	/* set the control register to automatically
+	   release successfully transmitted packets, to make the best
+	   use out of our limited memory */
+	SMC_SELECT_BANK( 1 );
+	outw( inw( ioaddr + CONTROL ) | CTL_AUTO_RELEASE , ioaddr + CONTROL );
+
+	/* Reset the MMU */
+	SMC_SELECT_BANK( 2 );
+	outw( MC_RESET, ioaddr + MMU_CMD );
+
+	/* Note:  It doesn't seem that waiting for the MMU busy is needed here,
+	   but this is a place where future chipsets _COULD_ break.  Be wary
+ 	   of issuing another MMU command right after this */
+
+	outb( 0, ioaddr + INT_MASK );
+}
+
+/*
+ . Function: smc_enable
+ . Purpose: let the chip talk to the outside work
+ . Method:
+ .	1.  Enable the transmitter
+ .	2.  Enable the receiver
+ .	3.  Enable interrupts
+*/
+static void smc_enable( int ioaddr )
+{
+	SMC_SELECT_BANK( 0 );
+	/* see the header file for options in TCR/RCR NORMAL*/
+	outw( TCR_NORMAL, ioaddr + TCR );
+	outw( RCR_NORMAL, ioaddr + RCR );
+
+	/* now, enable interrupts */
+	SMC_SELECT_BANK( 2 );
+	outb( SMC_INTERRUPT_MASK, ioaddr + INT_MASK );
+}
+
+/*
+ . Function: smc_shutdown
+ . Purpose:  closes down the SMC91xxx chip.
+ . Method:
+ .	1. zero the interrupt mask
+ .	2. clear the enable receive flag
+ .	3. clear the enable xmit flags
+ .
+ . TODO:
+ .   (1) maybe utilize power down mode.
+ .	Why not yet?  Because while the chip will go into power down mode,
+ .	the manual says that it will wake up in response to any I/O requests
+ .	in the register space.   Empirical results do not show this working.
+*/
+static void smc_shutdown( int ioaddr )
+{
+	/* no more interrupts for me */
+	SMC_SELECT_BANK( 2 );
+	outb( 0, ioaddr + INT_MASK );
+
+	/* and tell the card to stay away from that nasty outside world */
+	SMC_SELECT_BANK( 0 );
+	outb( RCR_CLEAR, ioaddr + RCR );
+	outb( TCR_CLEAR, ioaddr + TCR );
+#if 0
+	/* finally, shut the chip down */
+	SMC_SELECT_BANK( 1 );
+	outw( inw( ioaddr + CONTROL ), CTL_POWERDOWN, ioaddr + CONTROL  );
+#endif
+}
+
+
+/*
+ . Function: smc_setmulticast( int ioaddr, int count, dev_mc_list * adds )
+ . Purpose:
+ .    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.
+ .
+ . This routine is based very heavily on the one provided by Peter Cammaert.
+*/
+
+
+static void smc_setmulticast( int ioaddr, int count, struct dev_mc_list * addrs ) {
+	int			i;
+	unsigned char		multicast_table[ 8 ];
+	struct dev_mc_list	* cur_addr;
+	/* table for flipping the order of 3 bits */
+	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 = addrs;
+	for ( i = 0; i < 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 = ether_crc_le(6, cur_addr->dmi_addr) & 0x3f;
+
+		/* do some messy swapping to put the bit in the right spot */
+		multicast_table[invert3[position&7]] |=
+					(1<<invert3[(position>>3)&7]);
+
+	}
+	/* now, the table can be loaded into the chipset */
+	SMC_SELECT_BANK( 3 );
+
+	for ( i = 0; i < 8 ; i++ ) {
+		outb( multicast_table[i], ioaddr + MULTICAST1 + i );
+	}
+}
+
+/*
+ . Function: smc_wait_to_send_packet( struct sk_buff * skb, struct net_device * )
+ . Purpose:
+ .    Attempt to allocate memory for a packet, if chip-memory is not
+ .    available, then tell the card to generate an interrupt when it
+ .    is available.
+ .
+ . Algorithm:
+ .
+ . o	if the saved_skb is not currently null, then drop this packet
+ .	on the floor.  This should never happen, because of TBUSY.
+ . o	if the saved_skb is null, then replace it with the current packet,
+ . o	See if I can sending it now.
+ . o 	(NO): Enable interrupts and let the interrupt handler deal with it.
+ . o	(YES):Send it now.
+*/
+static int smc_wait_to_send_packet( struct sk_buff * skb, struct net_device * dev )
+{
+	struct smc_local *lp = netdev_priv(dev);
+	unsigned int ioaddr 	= dev->base_addr;
+	word 			length;
+	unsigned short 		numPages;
+	word			time_out;
+
+	netif_stop_queue(dev);
+	/* Well, I want to send the packet.. but I don't know
+	   if I can send it right now...  */
+
+	if ( lp->saved_skb) {
+		/* THIS SHOULD NEVER HAPPEN. */
+		lp->stats.tx_aborted_errors++;
+		printk(CARDNAME": Bad Craziness - sent packet while busy.\n" );
+		return 1;
+	}
+	lp->saved_skb = skb;
+
+	length = skb->len;
+
+	if (length < ETH_ZLEN) {
+		skb = skb_padto(skb, ETH_ZLEN);
+		if (skb == NULL) {
+			netif_wake_queue(dev);
+			return 0;
+		}
+		length = ETH_ZLEN;
+	}
+		
+	/*
+	** 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 :) )
+	**
+	** Pkt size for allocating is data length +6 (for additional status words,
+	** length and ctl!) If odd size last byte is included in this header.
+	*/
+	numPages =  ((length & 0xfffe) + 6) / 256;
+
+	if (numPages > 7 ) {
+		printk(CARDNAME": Far too big packet error. \n");
+		/* freeing the packet is a good thing here... but should
+		 . any packets of this size get down here?   */
+		dev_kfree_skb (skb);
+		lp->saved_skb = NULL;
+		/* this IS an error, but, i don't want the skb saved */
+		netif_wake_queue(dev);
+		return 0;
+	}
+	/* either way, a packet is waiting now */
+	lp->packets_waiting++;
+
+	/* now, try to allocate the memory */
+	SMC_SELECT_BANK( 2 );
+	outw( MC_ALLOC | numPages, ioaddr + MMU_CMD );
+	/*
+ 	. Performance Hack
+	.
+ 	. wait a short amount of time.. if I can send a packet now, I send
+	. it now.  Otherwise, I enable an interrupt and wait for one to be
+	. available.
+	.
+	. I could have handled this a slightly different way, by checking to
+	. see if any memory was available in the FREE MEMORY register.  However,
+	. either way, I need to generate an allocation, and the allocation works
+	. no matter what, so I saw no point in checking free memory.
+	*/
+	time_out = MEMORY_WAIT_TIME;
+	do {
+		word	status;
+
+		status = inb( ioaddr + INTERRUPT );
+		if ( status & IM_ALLOC_INT ) {
+			/* acknowledge the interrupt */
+			outb( IM_ALLOC_INT, ioaddr + INTERRUPT );
+  			break;
+		}
+   	} while ( -- time_out );
+
+   	if ( !time_out ) {
+		/* oh well, wait until the chip finds memory later */
+		SMC_ENABLE_INT( IM_ALLOC_INT );
+      		PRINTK2((CARDNAME": memory allocation deferred. \n"));
+		/* it's deferred, but I'll handle it later */
+      		return 0;
+   	}
+	/* or YES! I can send the packet now.. */
+	smc_hardware_send_packet(dev);
+	netif_wake_queue(dev);
+	return 0;
+}
+
+/*
+ . Function:  smc_hardware_send_packet(struct net_device * )
+ . Purpose:
+ .	This sends the actual packet to the SMC9xxx chip.
+ .
+ . Algorithm:
+ . 	First, see if a saved_skb is available.
+ .		( this should NOT be called if there is no 'saved_skb'
+ .	Now, find the packet number that the chip allocated
+ .	Point the data pointers at it in memory
+ .	Set the length word in the chip's memory
+ .	Dump the packet to chip memory
+ .	Check if a last byte is needed ( odd length packet )
+ .		if so, set the control flag right
+ . 	Tell the card to send it
+ .	Enable the transmit interrupt, so I know if it failed
+ . 	Free the kernel data if I actually sent it.
+*/
+static void smc_hardware_send_packet( struct net_device * dev )
+{
+	struct smc_local *lp = netdev_priv(dev);
+	byte	 		packet_no;
+	struct sk_buff * 	skb = lp->saved_skb;
+	word			length;
+	unsigned int		ioaddr;
+	byte			* buf;
+
+	ioaddr = dev->base_addr;
+
+	if ( !skb ) {
+		PRINTK((CARDNAME": In XMIT with no packet to send \n"));
+		return;
+	}
+	length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN;
+	buf = skb->data;
+
+	/* If I get here, I _know_ there is a packet slot waiting for me */
+	packet_no = inb( ioaddr + PNR_ARR + 1 );
+	if ( packet_no & 0x80 ) {
+		/* or isn't there?  BAD CHIP! */
+		printk(KERN_DEBUG CARDNAME": Memory allocation failed. \n");
+		dev_kfree_skb_any(skb);
+		lp->saved_skb = NULL;
+		netif_wake_queue(dev);
+		return;
+	}
+
+	/* we have a packet address, so tell the card to use it */
+	outb( packet_no, ioaddr + PNR_ARR );
+
+	/* point to the beginning of the packet */
+	outw( PTR_AUTOINC , ioaddr + POINTER );
+
+   	PRINTK3((CARDNAME": Trying to xmit packet of length %x\n", length ));
+#if SMC_DEBUG > 2
+	print_packet( buf, length );
+#endif
+
+	/* send the packet length ( +6 for status, length and ctl byte )
+ 	   and the status word ( set to zeros ) */
+#ifdef USE_32_BIT
+	outl(  (length +6 ) << 16 , ioaddr + DATA_1 );
+#else
+	outw( 0, ioaddr + DATA_1 );
+	/* send the packet length ( +6 for status words, length, and ctl*/
+	outb( (length+6) & 0xFF,ioaddr + DATA_1 );
+	outb( (length+6) >> 8 , ioaddr + DATA_1 );
+#endif
+
+	/* send the actual data
+	 . I _think_ it's faster to send the longs first, and then
+	 . mop up by sending the last word.  It depends heavily
+ 	 . on alignment, at least on the 486.  Maybe it would be
+ 	 . a good idea to check which is optimal?  But that could take
+	 . almost as much time as is saved?
+	*/
+#ifdef USE_32_BIT
+	if ( length & 0x2  ) {
+		outsl(ioaddr + DATA_1, buf,  length >> 2 );
+#if !defined(__H8300H__) && !defined(__H8300S__)
+		outw( *((word *)(buf + (length & 0xFFFFFFFC))),ioaddr +DATA_1);
+#else
+		ctrl_outw( *((word *)(buf + (length & 0xFFFFFFFC))),ioaddr +DATA_1);
+#endif
+	}
+	else
+		outsl(ioaddr + DATA_1, buf,  length >> 2 );
+#else
+	outsw(ioaddr + DATA_1 , buf, (length ) >> 1);
+#endif
+	/* Send the last byte, if there is one.   */
+
+	if ( (length & 1) == 0 ) {
+		outw( 0, ioaddr + DATA_1 );
+	} else {
+		outb( buf[length -1 ], ioaddr + DATA_1 );
+		outb( 0x20, ioaddr + DATA_1);
+	}
+
+	/* enable the interrupts */
+	SMC_ENABLE_INT( (IM_TX_INT | IM_TX_EMPTY_INT) );
+
+	/* and let the chipset deal with it */
+	outw( MC_ENQUEUE , ioaddr + MMU_CMD );
+
+	PRINTK2((CARDNAME": Sent packet of length %d \n",length));
+
+	lp->saved_skb = NULL;
+	dev_kfree_skb_any (skb);
+
+	dev->trans_start = jiffies;
+
+	/* we can send another packet */
+	netif_wake_queue(dev);
+
+	return;
+}
+
+/*-------------------------------------------------------------------------
+ |
+ | smc_init(int unit)
+ |   Input parameters:
+ |	dev->base_addr == 0, try to find all possible locations
+ |	dev->base_addr == 1, return failure code
+ |	dev->base_addr == 2, always allocate space,  and return success
+ |	dev->base_addr == <anything else>   this is the address to check
+ |
+ |   Output:
+ |	pointer to net_device or ERR_PTR(error)
+ |
+ ---------------------------------------------------------------------------
+*/
+static int io;
+static int irq;
+static int ifport;
+
+struct net_device * __init smc_init(int unit)
+{
+	struct net_device *dev = alloc_etherdev(sizeof(struct smc_local));
+	static struct devlist *smcdev = smc_devlist;
+	int err = 0;
+
+#ifndef NO_AUTOPROBE
+	smcdev = smc_devlist;
+#endif
+	if (!dev)
+		return ERR_PTR(-ENODEV);
+
+	if (unit >= 0) {
+		sprintf(dev->name, "eth%d", unit);
+		netdev_boot_setup_check(dev);
+		io = dev->base_addr;
+		irq = dev->irq;
+	}
+
+	SET_MODULE_OWNER(dev);
+
+	if (io > 0x1ff) {	/* Check a single specified location. */
+		err = smc_probe(dev, io);
+	} else if (io != 0) {	/* Don't probe at all. */
+		err = -ENXIO;
+	} else {
+		for (;smcdev->port; smcdev++) {
+			if (smc_probe(dev, smcdev->port) == 0)
+				break;
+		}
+		if (!smcdev->port)
+			err = -ENODEV;
+	}
+	if (err)
+		goto out;
+	err = register_netdev(dev);
+	if (err)
+		goto out1;
+	return dev;
+out1:
+	free_irq(dev->irq, dev);
+	release_region(dev->base_addr, SMC_IO_EXTENT);
+out:
+	free_netdev(dev);
+	return ERR_PTR(err);
+}
+
+/*----------------------------------------------------------------------
+ . 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,
+ ------------------------------------------------------------------------
+*/
+int __init smc_findirq( int ioaddr )
+{
+#ifndef NO_AUTOPROBE
+	int	timeout = 20;
+	unsigned long cookie;
+
+
+	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.
+	 */
+
+
+	SMC_SELECT_BANK(2);
+	/* enable ALLOCation interrupts ONLY */
+	outb( IM_ALLOC_INT, ioaddr + INT_MASK );
+
+	/*
+ 	 . Allocate 512 bytes of memory.  Note that the chip was just
+	 . reset so all the memory is available
+	*/
+	outw( MC_ALLOC | 1, ioaddr + MMU_CMD );
+
+	/*
+	 . Wait until positive that the interrupt has been generated
+	*/
+	while ( timeout ) {
+		byte	int_status;
+
+		int_status = inb( ioaddr + INTERRUPT );
+
+		if ( int_status & IM_ALLOC_INT )
+			break;		/* got the interrupt */
+		timeout--;
+	}
+	/* there is really nothing that I can do here if timeout fails,
+	   as probe_irq_off will return a 0 anyway, which is what I
+	   want in this case.   Plus, the clean up is needed in both
+	   cases.  */
+
+	/* DELAY HERE!
+	   On a fast machine, the status might change before the interrupt
+	   is given to the processor.  This means that the interrupt was
+	   never detected, and probe_irq_off fails to report anything.
+	   This should fix probe_irq_* problems.
+	*/
+	SMC_DELAY();
+	SMC_DELAY();
+
+	/* and disable all interrupts again */
+	outb( 0, ioaddr + INT_MASK );
+
+	/* and return what I found */
+	return probe_irq_off(cookie);
+#else /* NO_AUTOPROBE */
+	struct devlist *smcdev;
+	for (smcdev = smc_devlist; smcdev->port; smcdev++) {
+		if (smcdev->port == ioaddr)
+			return smcdev->irq;
+	}
+	return 0;
+#endif
+}
+
+/*----------------------------------------------------------------------
+ . Function: smc_probe( int ioaddr )
+ .
+ . Purpose:
+ .	Tests to see if a given ioaddr points to an SMC9xxx 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, int ioaddr)
+{
+	int i, memory, retval;
+	static unsigned version_printed;
+	unsigned int bank;
+
+	const char *version_string;
+	const char *if_string;
+
+	/* registers */
+	word revision_register;
+	word base_address_register;
+	word configuration_register;
+	word memory_info_register;
+	word memory_cfg_register;
+
+	/* Grab the region so that no one else tries to probe our ioports. */
+	if (!request_region(ioaddr, SMC_IO_EXTENT, DRV_NAME))
+		return -EBUSY;
+
+	dev->irq = irq;
+	dev->if_port = ifport;
+
+	/* First, see if the high byte is 0x33 */
+	bank = inw( ioaddr + BANK_SELECT );
+	if ( (bank & 0xFF00) != 0x3300 ) {
+		retval = -ENODEV;
+		goto err_out;
+	}
+	/* The above MIGHT indicate a device, but I need to write to further
+ 	 	test this.  */
+	outw( 0x0, ioaddr + BANK_SELECT );
+	bank = inw( ioaddr + BANK_SELECT );
+	if ( (bank & 0xFF00 ) != 0x3300 ) {
+		retval = -ENODEV;
+		goto err_out;
+	}
+#if !defined(CONFIG_H8S_EDOSK2674)
+	/* 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);
+	base_address_register = inw( ioaddr + BASE );
+	if ( ioaddr != ( base_address_register >> 3 & 0x3E0 ) )  {
+		printk(CARDNAME ": IOADDR %x doesn't match configuration (%x)."
+			"Probably not a SMC chip\n",
+			ioaddr, base_address_register >> 3 & 0x3E0 );
+		/* well, the base address register didn't match.  Must not have
+		   been a SMC chip after all. */
+		retval = -ENODEV;
+		goto err_out;
+	}
+#else
+	(void)base_address_register; /* Warning suppression */
+#endif
+
+
+	/*  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  = inw( ioaddr + REVISION );
+	if ( !chip_ids[ ( revision_register  >> 4 ) & 0xF  ] ) {
+		/* I don't recognize this chip, so... */
+		printk(CARDNAME ": IO %x: Unrecognized revision register:"
+			" %x, Contact author. \n", ioaddr, revision_register );
+
+		retval = -ENODEV;
+		goto err_out;
+	}
+
+	/* at this point I'll assume that the chip is an SMC9xxx.
+	   It might be prudent to check a listing of MAC addresses
+	   against the hardware address, or do some other tests. */
+
+	if (version_printed++ == 0)
+		printk("%s", version);
+
+	/* fill in some of the fields */
+	dev->base_addr = ioaddr;
+
+	/*
+ 	 . Get the MAC address ( bank 1, regs 4 - 9 )
+	*/
+	SMC_SELECT_BANK( 1 );
+	for ( i = 0; i < 6; i += 2 ) {
+		word	address;
+
+		address = inw( ioaddr + ADDR0 + i  );
+		dev->dev_addr[ i + 1] = address >> 8;
+		dev->dev_addr[ i ] = address & 0xFF;
+	}
+
+	/* get the memory information */
+
+	SMC_SELECT_BANK( 0 );
+	memory_info_register = inw( ioaddr + MIR );
+	memory_cfg_register  = inw( ioaddr + MCR );
+	memory = ( memory_cfg_register >> 9 )  & 0x7;  /* multiplier */
+	memory *= 256 * ( memory_info_register & 0xFF );
+
+	/*
+	 Now, I want to find out more about the chip.  This is sort of
+ 	 redundant, but it's cleaner to have it in both, rather than having
+ 	 one VERY long probe procedure.
+	*/
+	SMC_SELECT_BANK(3);
+	revision_register  = inw( ioaddr + REVISION );
+	version_string = chip_ids[ ( revision_register  >> 4 ) & 0xF  ];
+	if ( !version_string ) {
+		/* I shouldn't get here because this call was done before.... */
+		retval = -ENODEV;
+		goto err_out;
+	}
+
+	/* is it using AUI or 10BaseT ? */
+	if ( dev->if_port == 0 ) {
+		SMC_SELECT_BANK(1);
+		configuration_register = inw( ioaddr + CONFIG );
+		if ( configuration_register & CFG_AUI_SELECT )
+			dev->if_port = 2;
+		else
+			dev->if_port = 1;
+	}
+	if_string = interfaces[ dev->if_port - 1 ];
+
+	/* now, reset the chip, and put it into a known state */
+	smc_reset( ioaddr );
+
+	/*
+	 . 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 < 2 ) {
+		int	trials;
+
+		trials = 3;
+		while ( trials-- ) {
+			dev->irq = smc_findirq( ioaddr );
+			if ( dev->irq )
+				break;
+			/* kick the card and try again */
+			smc_reset( ioaddr );
+		}
+	}
+	if (dev->irq == 0 ) {
+		printk(CARDNAME": Couldn't autodetect your IRQ. Use irq=xx.\n");
+		retval = -ENODEV;
+		goto err_out;
+	}
+
+	/* now, print out the card info, in a short format.. */
+
+	printk("%s: %s(r:%d) at %#3x IRQ:%d INTF:%s MEM:%db ", dev->name,
+		version_string, revision_register & 0xF, ioaddr, dev->irq,
+		if_string, memory );
+	/*
+	 . Print the Ethernet address
+	*/
+	printk("ADDR: ");
+	for (i = 0; i < 5; i++)
+		printk("%2.2x:", dev->dev_addr[i] );
+	printk("%2.2x \n", dev->dev_addr[5] );
+
+	/* set the private data to zero by default */
+	memset(dev->priv, 0, sizeof(struct smc_local));
+
+	/* Grab the IRQ */
+      	retval = request_irq(dev->irq, &smc_interrupt, 0, DRV_NAME, dev);
+      	if (retval) {
+		printk("%s: unable to get IRQ %d (irqval=%d).\n", DRV_NAME,
+			dev->irq, retval);
+  	  	goto err_out;
+      	}
+
+	dev->open		        = smc_open;
+	dev->stop		        = smc_close;
+	dev->hard_start_xmit    	= smc_wait_to_send_packet;
+	dev->tx_timeout		    	= smc_timeout;
+	dev->watchdog_timeo		= HZ/20;
+	dev->get_stats			= smc_query_statistics;
+	dev->set_multicast_list 	= smc_set_multicast_list;
+
+	return 0;
+
+err_out:
+	release_region(ioaddr, SMC_IO_EXTENT);
+	return retval;
+}
+
+#if SMC_DEBUG > 2
+static void print_packet( byte * buf, int length )
+{
+#if 0
+	int i;
+	int remainder;
+	int lines;
+
+	printk("Packet of length %d \n", length );
+	lines = length / 16;
+	remainder = length % 16;
+
+	for ( i = 0; i < lines ; i ++ ) {
+		int cur;
+
+		for ( cur = 0; cur < 8; cur ++ ) {
+			byte a, b;
+
+			a = *(buf ++ );
+			b = *(buf ++ );
+			printk("%02x%02x ", a, b );
+		}
+		printk("\n");
+	}
+	for ( i = 0; i < remainder/2 ; i++ ) {
+		byte a, b;
+
+		a = *(buf ++ );
+		b = *(buf ++ );
+		printk("%02x%02x ", a, b );
+	}
+	printk("\n");
+#endif
+}
+#endif
+
+
+/*
+ * Open and Initialize the board
+ *
+ * Set up everything, reset the card, etc ..
+ *
+ */
+static int smc_open(struct net_device *dev)
+{
+	int	ioaddr = dev->base_addr;
+
+	int	i;	/* used to set hw ethernet address */
+
+	/* clear out all the junk that was put here bef