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

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diff -u --recursive --new-file v2.3.20/linux/drivers/net/sktr.c linux/drivers/net/sktr.c
@@ -1,2703 +0,0 @@
-/*
- *  sktr.c: A network driver for the SysKonnect Token Ring ISA/PCI Adapters.
- *
- *  Written 1997 by Christoph Goos
- *
- *  A fine result of the Linux Systems Network Architecture Project.
- *  http://samba.anu.edu.au/linux-sna/
- *
- *  This software may be used and distributed according to the terms
- *  of the GNU Public License, incorporated herein by reference.
- *
- *  This device driver works with the following SysKonnect adapters:
- *	- SysKonnect TR4/16(+) ISA	(SK-4190)
- *	- SysKonnect TR4/16(+) PCI	(SK-4590)
- *	- SysKonnect TR4/16 PCI		(SK-4591)
- *
- *  Sources:
- *  	- The hardware related parts of this driver are take from
- *  	  the SysKonnect Token Ring driver for Windows NT.
- *  	- I used the IBM Token Ring driver 'ibmtr.c' as a base for this
- *  	  driver, as well as the 'skeleton.c' driver by Donald Becker.
- *  	- Also various other drivers in the linux source tree were taken
- *  	  as samples for some tasks.
- *
- *  Maintainer(s):
- *    JS        Jay Schulist            jschlst@samba.anu.edu.au
- *    CG	Christoph Goos		cgoos@syskonnect.de
- *
- *  Modification History:
- *	29-Aug-97	CG	Created
- *	04-Apr-98	CG	Fixed problems caused by tok_timer_check
- *	10-Apr-98	CG	Fixed lockups at cable disconnection
- *	27-May-98	JS	Formated to Linux Kernel Format
- *	31-May-98	JS	Hacked in PCI support
- *	16-Jun-98	JS	Modulized for multiple cards with one driver
- *
- *  To do:
- *    1. Selectable 16 Mbps or 4Mbps
- *    2. Multi/Broadcast packet handling
- *
- */
-
-static const char *version = "sktr.c: v1.01 08/29/97 by Christoph Goos\n";
-
-#ifdef MODULE
-#include <linux/module.h>
-#include <linux/version.h>
-#endif
-
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/interrupt.h>
-#include <linux/ptrace.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/malloc.h>
-#include <linux/string.h>
-#include <linux/time.h>
-#include <asm/system.h>
-#include <asm/bitops.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/irq.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/pci.h>
-
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/skbuff.h>
-#include <linux/trdevice.h>
-
-#include "sktr.h"		/* Our Stuff */
-#include "sktr_firmware.h"	/* SysKonnect adapter firmware */
-
-/* A zero-terminated list of I/O addresses to be probed. */
-static unsigned int sktr_portlist[] __initdata = {
-	0x0A20, 0x1A20, 0x0B20, 0x1B20, 0x0980, 0x1980, 0x0900, 0x1900,
-	0
-};
-
-/* A zero-terminated list of IRQs to be probed. 
- * Used again after initial probe for sktr_chipset_init, called from sktr_open.
- */
-static unsigned short sktr_irqlist[] = {
-	3, 5, 9, 10, 11, 12, 15,
-	0
-};
-
-/* A zero-terminated list of DMAs to be probed. */
-static int sktr_dmalist[] __initdata = {
-	5, 6, 7,
-	0
-};
-
-/* Card names */
-static char *pci_cardname = "SK NET TR 4/16 PCI\0";
-static char *isa_cardname = "SK NET TR 4/16 ISA\0";
-static char *AdapterName;
-
-/* Use 0 for production, 1 for verification, 2 for debug, and
- * 3 for very verbose debug.
- */
-#ifndef SKTR_DEBUG
-#define SKTR_DEBUG 1
-#endif
-static unsigned int sktr_debug = SKTR_DEBUG;
-
-/* The number of low I/O ports used by the tokencard. */
-#define SKTR_IO_EXTENT 32
-
-/* Index to functions, as function prototypes.
- * Alphabetical by function name.
- */
-
-/* "B" */
-static int      sktr_bringup_diags(struct net_device *dev);
-/* "C" */
-static void	sktr_cancel_tx_queue(struct net_local* tp);
-static int 	sktr_chipset_init(struct net_device *dev);
-static void 	sktr_chk_irq(struct net_device *dev);
-static unsigned char sktr_chk_frame(struct net_device *dev, unsigned char *Addr);
-static void 	sktr_chk_outstanding_cmds(struct net_device *dev);
-static void 	sktr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr);
-static unsigned char sktr_chk_ssb(struct net_local *tp, unsigned short IrqType);
-static int 	sktr_close(struct net_device *dev);
-static void 	sktr_cmd_status_irq(struct net_device *dev);
-/* "D" */
-static void 	sktr_disable_interrupts(struct net_device *dev);
-static void 	sktr_dump(unsigned char *Data, int length);
-/* "E" */
-static void 	sktr_enable_interrupts(struct net_device *dev);
-static void 	sktr_exec_cmd(struct net_device *dev, unsigned short Command);
-static void 	sktr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue);
-/* "F" */
-static unsigned char *sktr_fix_srouting(unsigned char *buf, short *FrameLen);
-/* "G" */
-static struct enet_statistics *sktr_get_stats(struct net_device *dev);
-/* "H" */
-static void 	sktr_hardware_send_packet(struct net_device *dev,
-			struct net_local* tp);
-/* "I" */
-static int 	sktr_init_adapter(struct net_device *dev);
-static int 	sktr_init_card(struct net_device *dev);
-static void 	sktr_init_ipb(struct net_local *tp);
-static void 	sktr_init_net_local(struct net_device *dev);
-static void 	sktr_init_opb(struct net_local *tp);
-static void 	sktr_interrupt(int irq, void *dev_id, struct pt_regs *regs);
-static int 	sktr_isa_chk_card(struct net_device *dev, int ioaddr);
-static int      sktr_isa_chk_ioaddr(int ioaddr);
-/* "O" */
-static int 	sktr_open(struct net_device *dev);
-static void	sktr_open_adapter(struct net_device *dev);
-/* "P" */
-static int 	sktr_pci_chk_card(struct net_device *dev);
-int 		sktr_probe(struct net_device *dev);
-static int 	sktr_probe1(struct net_device *dev, int ioaddr);
-/* "R" */
-static void 	sktr_rcv_status_irq(struct net_device *dev);
-static void 	sktr_read_addr(struct net_device *dev, unsigned char *Address);
-static void 	sktr_read_ptr(struct net_device *dev);
-static void 	sktr_read_ram(struct net_device *dev, unsigned char *Data,
-			unsigned short Address, int Length);
-static int 	sktr_reset_adapter(struct net_device *dev);
-static void 	sktr_reset_interrupt(struct net_device *dev);
-static void 	sktr_ring_status_irq(struct net_device *dev);
-/* "S" */
-static int 	sktr_send_packet(struct sk_buff *skb, struct net_device *dev);
-static void 	sktr_set_multicast_list(struct net_device *dev);
-/* "T" */
-static void 	sktr_timer_chk(unsigned long data);
-static void 	sktr_timer_end_wait(unsigned long data);
-static void 	sktr_tx_status_irq(struct net_device *dev);
-/* "U" */
-static void 	sktr_update_rcv_stats(struct net_local *tp,
-			unsigned char DataPtr[], unsigned int Length);
-/* "W" */
-static void 	sktr_wait(unsigned long time);
-static void 	sktr_write_rpl_status(RPL *rpl, unsigned int Status);
-static void 	sktr_write_tpl_status(TPL *tpl, unsigned int Status);
-
-/*
- * Check for a network adapter of this type, and return '0' if one exists.
- * If dev->base_addr == 0, probe all likely locations.
- * If dev->base_addr == 1, always return failure.
- */
-int __init sktr_probe(struct net_device *dev)
-{
-	int i;
-	int base_addr = dev ? dev->base_addr : 0;
-
-	if(base_addr > 0x1ff)    /* Check a single specified location. */
-		return (sktr_probe1(dev, base_addr));
-	else if(base_addr != 0)  /* Don't probe at all. */
-		return (-ENXIO);
-
-	for(i = 0; sktr_portlist[i]; i++)
-	{
-		int ioaddr = sktr_portlist[i];
-		if(check_region(ioaddr, SKTR_IO_EXTENT))
-			continue;
-		if(sktr_probe1(dev, ioaddr))
-		{
-#ifndef MODULE
-                        tr_freedev(dev);
-#endif
-                }
-		else
-			return (0);
-	}
-
-	return (-ENODEV);
-}
-
-/*
- * Detect and setup the PCI SysKonnect TR cards in slot order.
- */
-static int __init sktr_pci_chk_card(struct net_device *dev)
-{
-	static int pci_index = 0;
-	unsigned char pci_bus, pci_device_fn;
-
-	if(!pci_present())
-		return (-1);	/* No PCI present. */
-
-	for(; pci_index < 0xff; pci_index++)
-	{
-		unsigned int pci_irq_line;
-		struct pci_dev *pdev;
-		unsigned short pci_command, new_command, vendor, device;
-		unsigned int pci_ioaddr;
-
-		if(pcibios_find_class(PCI_CLASS_NETWORK_TOKEN_RING << 8,
-			pci_index, &pci_bus, &pci_device_fn)
-			!= PCIBIOS_SUCCESSFUL)
-		{
-			break;
-		}
-
-		pcibios_read_config_word(pci_bus, pci_device_fn,
-						PCI_VENDOR_ID, &vendor);
-		pcibios_read_config_word(pci_bus, pci_device_fn,
-						PCI_DEVICE_ID, &device);
-
-		pdev		= pci_find_slot(pci_bus, pci_device_fn);
-		pci_irq_line 	= pdev->irq;
-		pci_ioaddr 	= pdev->resource[0].start;
-
-		pcibios_read_config_word(pci_bus, pci_device_fn,
-						PCI_COMMAND, &pci_command);
-
-		/* Remove I/O space marker in bit 0. */
-		pci_ioaddr &= ~3;
-
-		if(vendor != PCI_VENDOR_ID_SK)
-			continue;
-		if(device != PCI_DEVICE_ID_SK_TR)
-			continue;
-		if(check_region(pci_ioaddr, SKTR_IO_EXTENT))
-			continue;
-		request_region(pci_ioaddr, SKTR_IO_EXTENT, pci_cardname);
-		if(request_irq(pdev->irq, sktr_interrupt, SA_SHIRQ,
-				pci_cardname, dev))
-			return (-ENODEV); /* continue; ?? */
-
-		AdapterName = pci_cardname;
-
-		new_command = (pci_command|PCI_COMMAND_MASTER|PCI_COMMAND_IO);
-
-		if(pci_command != new_command)
-		{
-			printk("The PCI BIOS has not enabled this"
-				"device! Updating PCI command %4.4x->%4.4x.\n",
-			  	pci_command, new_command);
-			pcibios_write_config_word(pci_bus, pci_device_fn,
-				PCI_COMMAND, new_command);
-		}
-
-		/* At this point we have found a valid PCI TR card. */
-		dev->base_addr	= pci_ioaddr;
-		dev->irq 	= pci_irq_line;
-		dev->dma	= 0;
-
-		printk("%s: %s found at %#4x, using IRQ %d.\n",
-			dev->name, AdapterName, pci_ioaddr, dev->irq);
-
-		return (0);
-	}
-
-	return (-1);
-}
-
-/*
- * Detect and setup the ISA SysKonnect TR cards.
- */
-static int __init sktr_isa_chk_card(struct net_device *dev, int ioaddr)
-{
-	int i, err;
-	unsigned long flags;
-
-	err = sktr_isa_chk_ioaddr(ioaddr);
-	if(err < 0)
-		return (-ENODEV);
-
-        if(virt_to_bus((void*)((unsigned long)dev->priv+sizeof(struct net_local)))
-		> ISA_MAX_ADDRESS)
-        {
-                printk("%s: Memory not accessible for DMA\n", dev->name);
-                kfree(dev->priv);
-                return (-EAGAIN);
-        }
-
-	AdapterName = isa_cardname;
-
-        /* Grab the region so that no one else tries to probe our ioports. */
-        request_region(ioaddr, SKTR_IO_EXTENT, AdapterName);
-        dev->base_addr = ioaddr;
-
-        /* Autoselect IRQ and DMA if dev->irq == 0 */
-        if(dev->irq == 0)
-        {
-                for(i = 0; sktr_irqlist[i] != 0; i++)
-                {
-                        dev->irq = sktr_irqlist[i];
-                        err = request_irq(dev->irq, &sktr_interrupt, 0, AdapterName, dev);
-                        if(!err)
-				break;
-                }
-
-                if(sktr_irqlist[i] == 0)
-                {
-                        printk("%s: AutoSelect no IRQ available\n", dev->name);
-                        return (-EAGAIN);
-                }
-        }
-        else
-        {
-                err = request_irq(dev->irq, &sktr_interrupt, 0, AdapterName, dev);
-		if(err)
-                {
-                        printk("%s: Selected IRQ not available\n", dev->name);
-                        return (-EAGAIN);
-                }
-        }
-
-        /* Always allocate the DMA channel after IRQ and clean up on failure */
-        if(dev->dma == 0)
-        {
-                for(i = 0; sktr_dmalist[i] != 0; i++)
-                {
-			dev->dma = sktr_dmalist[i];
-                        err = request_dma(dev->dma, AdapterName);
-                        if(!err)
-                                break;
-                }
-
-                if(dev->dma == 0)
-                {
-                        printk("%s: AutoSelect no DMA available\n", dev->name);
-                        free_irq(dev->irq, NULL);
-                        return (-EAGAIN);
-                }
-        }
-        else
-        {
-                err = request_dma(dev->dma, AdapterName);
-                if(err)
-                {
-                        printk("%s: Selected DMA not available\n", dev->name);
-                        free_irq(dev->irq, NULL);
-                        return (-EAGAIN);
-                }
-        }
-
-	flags=claim_dma_lock();
-	disable_dma(dev->dma);
-        set_dma_mode(dev->dma, DMA_MODE_CASCADE);
-        enable_dma(dev->dma);
-        release_dma_lock(flags);
-
-	printk("%s: %s found at %#4x, using IRQ %d and DMA %d.\n",
-                dev->name, AdapterName, ioaddr, dev->irq, dev->dma);
-
-	return (0);
-}
-
-static int __init sktr_probe1(struct net_device *dev, int ioaddr)
-{
-	static unsigned version_printed = 0;
-	struct net_local *tp;
-	int err;
-
-	if(sktr_debug && version_printed++ == 0)
-		printk("%s", version);
-
-#ifndef MODULE
-	dev = init_trdev(dev, 0);
-	if(dev == NULL)
-		return (-ENOMEM);
-#endif
-
-	err = sktr_pci_chk_card(dev);
-	if(err < 0)
-	{
-		err = sktr_isa_chk_card(dev, ioaddr);
-		if(err < 0)
-			return (-ENODEV);
-	}
-
-	/* Setup this devices private information structure */
-	tp = (struct net_local *)kmalloc(sizeof(struct net_local), GFP_KERNEL | GFP_DMA);
-	if(tp == NULL)
-		return (-ENOMEM);
-	memset(tp, 0, sizeof(struct net_local));
-	init_waitqueue_head(&tp->wait_for_tok_int);
-	
-	dev->priv		= tp;
-	dev->init               = sktr_init_card;
-        dev->open               = sktr_open;
-        dev->stop               = sktr_close;
-        dev->hard_start_xmit    = sktr_send_packet;
-        dev->get_stats          = sktr_get_stats;
-        dev->set_multicast_list = &sktr_set_multicast_list;
-
-        return (0);
-}
-
-/* Dummy function */
-static int __init sktr_init_card(struct net_device *dev)
-{
-	if(sktr_debug > 3)
-		printk("%s: sktr_init_card\n", dev->name);
-
-	return (0);
-}
-
-/*
- * This function tests if an adapter is really installed at the
- * given I/O address. Return negative if no adapter at IO addr.
- */
-static int __init sktr_isa_chk_ioaddr(int ioaddr)
-{
-	unsigned char old, chk1, chk2;
-
-	old = inb(ioaddr + SIFADR);	/* Get the old SIFADR value */
-
-	chk1 = 0;	/* Begin with check value 0 */
-	do {
-		/* Write new SIFADR value */
-		outb(chk1, ioaddr + SIFADR);
-
-		/* Read, invert and write */
-		chk2 = inb(ioaddr + SIFADD);
-		chk2 ^= 0x0FE;
-		outb(chk2, ioaddr + SIFADR);
-
-		/* Read, invert and compare */
-		chk2 = inb(ioaddr + SIFADD);
-		chk2 ^= 0x0FE;
-
-		if(chk1 != chk2)
-			return (-1);	/* No adapter */
-
-		chk1 -= 2;
-	} while(chk1 != 0);	/* Repeat 128 times (all byte values) */
-
-    	/* Restore the SIFADR value */
-	outb(old, ioaddr + SIFADR);
-
-	return (0);
-}
-
-/*
- * Open/initialize the board. This is called sometime after
- * booting when the 'ifconfig' program is run.
- *
- * This routine should set everything up anew at each open, even
- * registers that "should" only need to be set once at boot, so that
- * there is non-reboot way to recover if something goes wrong.
- */
-static int sktr_open(struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-	int err;
-
-	/* Reset the hardware here. Don't forget to set the station address. */
-	err = sktr_chipset_init(dev);
-	if(err)
-	{
-		printk(KERN_INFO "%s: Chipset initialization error\n", 
-			dev->name);
-		return (-1);
-	}
-
-	dev->addr_len = 6;
-	sktr_read_addr(dev, (unsigned char*)dev->dev_addr);
-
-	init_timer(&tp->timer);
-	tp->timer.expires	= jiffies + 30*HZ;
-	tp->timer.function	= sktr_timer_end_wait;
-	tp->timer.data		= (unsigned long)dev;
-	tp->timer.next		= NULL;
-	tp->timer.prev		= NULL;
-	add_timer(&tp->timer);
-
-	sktr_read_ptr(dev);
-	sktr_enable_interrupts(dev);
-	sktr_open_adapter(dev);
-
-	dev->tbusy = 0;
-	dev->interrupt = 0;
-	dev->start = 0;
-
-	/* Wait for interrupt from hardware. If interrupt does not come,
-	 * there will be a timeout from the timer.
-	 */
-	tp->Sleeping = 1;
-	interruptible_sleep_on(&tp->wait_for_tok_int);
-	del_timer(&tp->timer);
-
-	/* If AdapterVirtOpenFlag is 1, the adapter is now open for use */
-	if(tp->AdapterVirtOpenFlag == 0)
-	{
-		sktr_disable_interrupts(dev);
-		return (-1);
-	}
-
-	dev->start = 1;
-
-	tp->StartTime = jiffies;
-
-	/* Start function control timer */
-	tp->timer.expires	= jiffies + 2*HZ;
-	tp->timer.function	= sktr_timer_chk;
-	tp->timer.data		= (unsigned long)dev;
-	add_timer(&tp->timer);
-
-#ifdef MODULE
-	MOD_INC_USE_COUNT;
-#endif
-
-	return (0);
-}
-
-/*
- * Timeout function while waiting for event
- */
-static void sktr_timer_end_wait(unsigned long data)
-{
-	struct net_device *dev = (struct net_device*)data;
-	struct net_local *tp = (struct net_local *)dev->priv;
-
-	if(tp->Sleeping)
-	{
-		tp->Sleeping = 0;
-		wake_up_interruptible(&tp->wait_for_tok_int);
-	}
-
-	return;
-}
-
-/*
- * Initialize the chipset
- */
-static int sktr_chipset_init(struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-	unsigned char PosReg, Tmp;
-	int i, err;
-
-	sktr_init_ipb(tp);
-	sktr_init_opb(tp);
-	sktr_init_net_local(dev);
-
-	/* Set pos register: selects irq and dma channel.
-	 * Only for ISA bus adapters.
-	 */
-	if(dev->dma > 0)
-	{
-		PosReg = 0;
-		for(i = 0; sktr_irqlist[i] != 0; i++)
-		{
-			if(sktr_irqlist[i] == dev->irq)
-				break;
-		}
-
-		/* Choose default cycle time, 500 nsec   */
-		PosReg |= CYCLE_TIME << 2;
-		PosReg |= i << 4;
-		i = dev->dma - 5;
-		PosReg |= i;
-
-		if(tp->DataRate == SPEED_4)
-			PosReg |= LINE_SPEED_BIT;
-		else
-			PosReg &= ~LINE_SPEED_BIT;
-
-		outb(PosReg, dev->base_addr + POSREG);
-		Tmp = inb(dev->base_addr + POSREG);
-		if((Tmp & ~CYCLE_TIME) != (PosReg & ~CYCLE_TIME))
-			printk(KERN_INFO "%s: POSREG error\n", dev->name);
-	}
-
-	err = sktr_reset_adapter(dev);
-	if(err < 0)
-		return (-1);
-
-	err = sktr_bringup_diags(dev);
-	if(err < 0)
-		return (-1);
-
-	err = sktr_init_adapter(dev);
-	if(err < 0)
-		return (-1);
-
-	return (0);
-}
-
-/*
- * Initializes the net_local structure.
- */
-static void sktr_init_net_local(struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-	int i;
-
-	tp->scb.CMD	= 0;
-	tp->scb.Parm[0] = 0;
-	tp->scb.Parm[1] = 0;
-
-	tp->ssb.STS	= 0;
-	tp->ssb.Parm[0] = 0;
-	tp->ssb.Parm[1] = 0;
-	tp->ssb.Parm[2] = 0;
-
-	tp->CMDqueue	= 0;
-
-	tp->AdapterOpenFlag	= 0;
-	tp->AdapterVirtOpenFlag = 0;
-	tp->ScbInUse		= 0;
-	tp->OpenCommandIssued	= 0;
-	tp->ReOpenInProgress	= 0;
-	tp->HaltInProgress	= 0;
-	tp->TransmitHaltScheduled = 0;
-	tp->LobeWireFaultLogged	= 0;
-	tp->LastOpenStatus	= 0;
-	tp->MaxPacketSize	= DEFAULT_PACKET_SIZE;
-
-	skb_queue_head_init(&tp->SendSkbQueue);
-	tp->QueueSkb = MAX_TX_QUEUE;
-
-	/* Create circular chain of transmit lists */
-	for (i = 0; i < TPL_NUM; i++)
-	{
-		tp->Tpl[i].NextTPLAddr = htonl((unsigned long) virt_to_bus(&tp->Tpl[(i+1) % TPL_NUM]));
-		tp->Tpl[i].Status	= 0;
-		tp->Tpl[i].FrameSize	= 0;
-		tp->Tpl[i].FragList[0].DataCount	= 0;
-		tp->Tpl[i].FragList[0].DataAddr		= 0;
-		tp->Tpl[i].NextTPLPtr	= &tp->Tpl[(i+1) % TPL_NUM];
-		tp->Tpl[i].MData	= NULL;
-		tp->Tpl[i].TPLIndex	= i;
-		tp->Tpl[i].BusyFlag	= 0;
-	}
-
-	tp->TplFree = tp->TplBusy = &tp->Tpl[0];
-
-	/* Create circular chain of receive lists */
-	for (i = 0; i < RPL_NUM; i++)
-	{
-		tp->Rpl[i].NextRPLAddr = htonl((unsigned long) virt_to_bus(&tp->Rpl[(i+1) % RPL_NUM]));
-		tp->Rpl[i].Status = (RX_VALID | RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
-		tp->Rpl[i].FrameSize = 0;
-		tp->Rpl[i].FragList[0].DataCount = SWAPB(tp->MaxPacketSize);
-
-		/* Alloc skb and point adapter to data area */
-		tp->Rpl[i].Skb = dev_alloc_skb(tp->MaxPacketSize);
-
-		/* skb == NULL ? then use local buffer */
-		if(tp->Rpl[i].Skb == NULL)
-		{
-			tp->Rpl[i].SkbStat = SKB_UNAVAILABLE;
-			tp->Rpl[i].FragList[0].DataAddr = htonl(virt_to_bus(tp->LocalRxBuffers[i]));
-			tp->Rpl[i].MData = tp->LocalRxBuffers[i];
-		}
-		else	/* SKB != NULL */
-		{
-			tp->Rpl[i].Skb->dev = dev;
-			skb_put(tp->Rpl[i].Skb, tp->MaxPacketSize);
-
-			/* data unreachable for DMA ? then use local buffer */
-			if(virt_to_bus(tp->Rpl[i].Skb->data) + tp->MaxPacketSize > ISA_MAX_ADDRESS)
-			{
-				tp->Rpl[i].SkbStat = SKB_DATA_COPY;
-				tp->Rpl[i].FragList[0].DataAddr = htonl(virt_to_bus(tp->LocalRxBuffers[i]));
-				tp->Rpl[i].MData = tp->LocalRxBuffers[i];
-			}
-			else	/* DMA directly in skb->data */
-			{
-				tp->Rpl[i].SkbStat = SKB_DMA_DIRECT;
-				tp->Rpl[i].FragList[0].DataAddr = htonl(virt_to_bus(tp->Rpl[i].Skb->data));
-				tp->Rpl[i].MData = tp->Rpl[i].Skb->data;
-			}
-		}
-
-		tp->Rpl[i].NextRPLPtr = &tp->Rpl[(i+1) % RPL_NUM];
-		tp->Rpl[i].RPLIndex = i;
-	}
-
-	tp->RplHead = &tp->Rpl[0];
-	tp->RplTail = &tp->Rpl[RPL_NUM-1];
-	tp->RplTail->Status = (RX_START_FRAME | RX_END_FRAME | RX_FRAME_IRQ);
-
-	return;
-}
-
-/*
- * Initializes the initialisation parameter block.
- */
-static void sktr_init_ipb(struct net_local *tp)
-{
-	tp->ipb.Init_Options	= BURST_MODE;
-	tp->ipb.CMD_Status_IV	= 0;
-	tp->ipb.TX_IV		= 0;
-	tp->ipb.RX_IV		= 0;
-	tp->ipb.Ring_Status_IV	= 0;
-	tp->ipb.SCB_Clear_IV	= 0;
-	tp->ipb.Adapter_CHK_IV	= 0;
-	tp->ipb.RX_Burst_Size	= BURST_SIZE;
-	tp->ipb.TX_Burst_Size	= BURST_SIZE;
-	tp->ipb.DMA_Abort_Thrhld = DMA_RETRIES;
-	tp->ipb.SCB_Addr	= 0;
-	tp->ipb.SSB_Addr	= 0;
-
-	return;
-}
-
-/*
- * Initializes the open parameter block.
- */
-static void sktr_init_opb(struct net_local *tp)
-{
-	unsigned long Addr;
-	unsigned short RplSize    = RPL_SIZE;
-	unsigned short TplSize    = TPL_SIZE;
-	unsigned short BufferSize = BUFFER_SIZE;
-
-	tp->ocpl.OPENOptions 	 = 0;
-	tp->ocpl.OPENOptions 	|= ENABLE_FULL_DUPLEX_SELECTION;
-	tp->ocpl.OPENOptions 	|= PAD_ROUTING_FIELD;
-	tp->ocpl.FullDuplex 	 = 0;
-	tp->ocpl.FullDuplex 	|= OPEN_FULL_DUPLEX_OFF;
-
-	/* Fixme: If mac address setable:
-	 * for (i=0; i<LENGTH_OF_ADDRESS; i++)
-	 *	mac->Vam->ocpl.NodeAddr[i] = mac->CurrentAddress[i];
-	 */
-
-	tp->ocpl.GroupAddr	 = 0;
-	tp->ocpl.FunctAddr	 = 0;
-	tp->ocpl.RxListSize	 = SWAPB(RplSize);
-	tp->ocpl.TxListSize	 = SWAPB(TplSize);
-	tp->ocpl.BufSize	 = SWAPB(BufferSize);
-	tp->ocpl.Reserved	 = 0;
-	tp->ocpl.TXBufMin	 = TX_BUF_MIN;
-	tp->ocpl.TXBufMax	 = TX_BUF_MAX;
-
-	Addr = htonl(virt_to_bus(tp->ProductID));
-
-	tp->ocpl.ProdIDAddr[0]	 = LOWORD(Addr);
-	tp->ocpl.ProdIDAddr[1]	 = HIWORD(Addr);
-
-	return;
-}
-
-/*
- * Send OPEN command to adapter
- */
-static void sktr_open_adapter(struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-
-	if(tp->OpenCommandIssued)
-		return;
-
-	tp->OpenCommandIssued = 1;
-	sktr_exec_cmd(dev, OC_OPEN);
-
-	return;
-}
-
-/*
- * Clear the adapter's interrupt flag. Clear system interrupt enable
- * (SINTEN): disable adapter to system interrupts.
- */
-static void sktr_disable_interrupts(struct net_device *dev)
-{
-	outb(0, dev->base_addr + SIFACL);
-
-	return;
-}
-
-/*
- * Set the adapter's interrupt flag. Set system interrupt enable
- * (SINTEN): enable adapter to system interrupts.
- */
-static void sktr_enable_interrupts(struct net_device *dev)
-{
-	outb(ACL_SINTEN, dev->base_addr + SIFACL);
-
-	return;
-}
-
-/*
- * Put command in command queue, try to execute it.
- */
-static void sktr_exec_cmd(struct net_device *dev, unsigned short Command)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-
-	tp->CMDqueue |= Command;
-	sktr_chk_outstanding_cmds(dev);
-
-	return;
-}
-
-/*
- * Linux always gives 18 byte of source routing information in the frame header.
- * But the length field can indicate shorter length. Then cut header
- * appropriate.
- */
-static unsigned char *sktr_fix_srouting(unsigned char *buf, short *FrameLen)
-{
-	struct trh_hdr *trh = (struct trh_hdr *)buf;
-	int len;
-        
-	if(buf[8] & TR_RII)
-	{
-		trh->rcf &= ~SWAPB((unsigned short) TR_RCF_LONGEST_FRAME_MASK);
-		trh->rcf |= SWAPB((unsigned short) TR_RCF_FRAME4K);
-		len = (SWAPB(trh->rcf) & TR_RCF_LEN_MASK) >> 8;
-		if(len < 18)
-		{
-			memcpy(&buf[18-len],buf,sizeof(struct trh_hdr)-18+len);
-			*FrameLen -= (18 - len);
-		}
-		return (&buf[18-len]);
-	}
-
-	return (buf);
-}
-
-/*
- * Gets skb from system, queues it and checks if it can be sent
- */
-static int sktr_send_packet(struct sk_buff *skb, struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-
-	if(dev->tbusy)
-	{
-		/*
-		 * If we get here, some higher level has decided we are broken.
-		 * There should really be a "kick me" function call instead.
-		 *
-		 * Resetting the token ring adapter takes a long time so just
-		 * fake transmission time and go on trying. Our own timeout
-		 * routine is in sktr_timer_chk()
-		 */
-		dev->tbusy 	 = 0;
-		dev->trans_start = jiffies;
-		return (1);
-	}
-
-	/*
-	 * If some higher layer thinks we've missed an tx-done interrupt we
-	 * are passed NULL.
-	 */
-	if(skb == NULL)
-		return (0);
-
-	/*
-	 * Block a timer-based transmit from overlapping. This could better be
-	 * done with atomic_swap(1, dev->tbusy), but set_bit() works as well.
-	 */
-	if(test_and_set_bit(0, (void*)&dev->tbusy) != 0)
-	{
-		printk("%s: Transmitter access conflict.\n", dev->name);
-		return (1);
-	}
-
-	if(tp->QueueSkb == 0)
-		return (1);	/* Return with tbusy set: queue full */
-
-	tp->QueueSkb--;
-	skb_queue_tail(&tp->SendSkbQueue, skb);
-	sktr_hardware_send_packet(dev, tp);
-	if(tp->QueueSkb > 0)
-		dev->tbusy = 0;
-
-	return (0);
-}
-
-/*
- * Move frames from internal skb queue into adapter tx queue
- */
-static void sktr_hardware_send_packet(struct net_device *dev, struct net_local* tp)
-{
-	TPL *tpl;
-	short length;
-	unsigned char *buf, *newbuf;
-	struct sk_buff *skb;
-	int i;
-    
-	for(;;)
-	{
-		/* Try to get a free TPL from the chain.
-		 *
-		 * NOTE: We *must* always leave one unused TPL in the chain, 
-		 * because otherwise the adapter might send frames twice.
-		 */
-		if(tp->TplFree->NextTPLPtr->BusyFlag)	/* No free TPL */
-		{
-			printk(KERN_INFO "%s: No free TPL\n", dev->name);
-			return;
-		}
-
-		/* Send first buffer from queue */
-		skb = skb_dequeue(&tp->SendSkbQueue);
-		if(skb == NULL)
-			return;
-
-		tp->QueueSkb++;
-		/* Is buffer reachable for Busmaster-DMA? */
-		if(virt_to_bus((void*)(((long) skb->data) + skb->len))
-			> ISA_MAX_ADDRESS)
-		{
-			/* Copy frame to local buffer */
-			i 	= tp->TplFree->TPLIndex;
-			length 	= skb->len;
-			buf 	= tp->LocalTxBuffers[i];
-			memcpy(buf, skb->data, length);
-			newbuf 	= sktr_fix_srouting(buf, &length);
-		}
-		else
-		{
-			/* Send direct from skb->data */
-			length = skb->len;
-			newbuf = sktr_fix_srouting(skb->data, &length);
-		}
-
-		/* Source address in packet? */
-		sktr_chk_src_addr(newbuf, dev->dev_addr);
-
-		tp->LastSendTime	= jiffies;
-		tpl 			= tp->TplFree;	/* Get the "free" TPL */
-		tpl->BusyFlag 		= 1;		/* Mark TPL as busy */
-		tp->TplFree 		= tpl->NextTPLPtr;
-    
-		/* Save the skb for delayed return of skb to system */
-		tpl->Skb = skb;
-		tpl->FragList[0].DataCount = (unsigned short) SWAPB(length);
-		tpl->FragList[0].DataAddr  = htonl(virt_to_bus(newbuf));
-
-		/* Write the data length in the transmit list. */
-		tpl->FrameSize 	= (unsigned short) SWAPB(length);
-		tpl->MData 	= newbuf;
-
-		/* Transmit the frame and set the status values. */
-		sktr_write_tpl_status(tpl, TX_VALID | TX_START_FRAME
-					| TX_END_FRAME | TX_PASS_SRC_ADDR
-					| TX_FRAME_IRQ);
-
-		/* Let adapter send the frame. */
-		sktr_exec_sifcmd(dev, CMD_TX_VALID);
-	}
-
-	return;
-}
-
-/*
- * Write the given value to the 'Status' field of the specified TPL.
- * NOTE: This function should be used whenever the status of any TPL must be
- * modified by the driver, because the compiler may otherwise change the
- * order of instructions such that writing the TPL status may be executed at
- * an undesireable time. When this function is used, the status is always
- * written when the function is called.
- */
-static void sktr_write_tpl_status(TPL *tpl, unsigned int Status)
-{
-	tpl->Status = Status;
-}
-
-static void sktr_chk_src_addr(unsigned char *frame, unsigned char *hw_addr)
-{
-	unsigned char SRBit;
-
-	if((((unsigned long)frame[8]) & ~0x80) != 0)	/* Compare 4 bytes */
-		return;
-	if((unsigned short)frame[12] != 0)		/* Compare 2 bytes */
-		return;
-
-	SRBit = frame[8] & 0x80;
-	memcpy(&frame[8], hw_addr, 6);
-	frame[8] |= SRBit;
-
-	return;
-}
-
-/*
- * The timer routine: Check if adapter still open and working, reopen if not. 
- */
-static void sktr_timer_chk(unsigned long data)
-{
-	struct net_device *dev = (struct net_device*)data;
-	struct net_local *tp = (struct net_local*)dev->priv;
-
-	if(tp->HaltInProgress)
-		return;
-
-	sktr_chk_outstanding_cmds(dev);
-	if(time_before(tp->LastSendTime + SEND_TIMEOUT, jiffies)
-		&& (tp->QueueSkb < MAX_TX_QUEUE || tp->TplFree != tp->TplBusy))
-	{
-		/* Anything to send, but stalled to long */
-		tp->LastSendTime = jiffies;
-		sktr_exec_cmd(dev, OC_CLOSE);	/* Does reopen automatically */
-	}
-
-	tp->timer.expires = jiffies + 2*HZ;
-	add_timer(&tp->timer);
-
-	if(tp->AdapterOpenFlag || tp->ReOpenInProgress)
-		return;
-	tp->ReOpenInProgress = 1;
-	sktr_open_adapter(dev);
-
-	return;
-}
-
-/*
- * The typical workload of the driver: Handle the network interface interrupts.
- */
-static void sktr_interrupt(int irq, void *dev_id, struct pt_regs *regs)
-{
-	struct net_device *dev = dev_id;
-	struct net_local *tp;
-	int ioaddr;
-	unsigned short irq_type;
-
-	if(dev == NULL)
-	{
-		printk("%s: irq %d for unknown device.\n", dev->name, irq);
-		return;
-	}
-
-	dev->interrupt = 1;
-
-	ioaddr = dev->base_addr;
-	tp = (struct net_local *)dev->priv;
-
-	irq_type = inw(ioaddr + SIFSTS);
-
-	while(irq_type & STS_SYSTEM_IRQ)
-	{
-		irq_type &= STS_IRQ_MASK;
-
-		if(!sktr_chk_ssb(tp, irq_type))
-		{
-			printk(KERN_INFO "%s: DATA LATE occurred\n", dev->name);
-			break;
-		}
-
-		switch(irq_type)
-		{
-			case STS_IRQ_RECEIVE_STATUS:
-				sktr_reset_interrupt(dev);
-				sktr_rcv_status_irq(dev);
-				break;
-
-			case STS_IRQ_TRANSMIT_STATUS:
-				/* Check if TRANSMIT.HALT command is complete */
-				if(tp->ssb.Parm[0] & COMMAND_COMPLETE)
-				{
-					tp->TransmitCommandActive = 0;
-					tp->TransmitHaltScheduled = 0;
-
-					/* Issue a new transmit command. */
-					sktr_exec_cmd(dev, OC_TRANSMIT);
-				}
-
-				sktr_reset_interrupt(dev);
-				sktr_tx_status_irq(dev);
-				break;
-
-			case STS_IRQ_COMMAND_STATUS:
-				/* The SSB contains status of last command
-				 * other than receive/transmit.
-				 */
-				sktr_cmd_status_irq(dev);
-				break;
-
-			case STS_IRQ_SCB_CLEAR:
-				/* The SCB is free for another command. */
-				tp->ScbInUse = 0;
-				sktr_chk_outstanding_cmds(dev);
-				break;
-
-			case STS_IRQ_RING_STATUS:
-				sktr_ring_status_irq(dev);
-				break;
-
-			case STS_IRQ_ADAPTER_CHECK:
-				sktr_chk_irq(dev);
-				break;
-
-			default:
-				printk(KERN_INFO "Unknown Token Ring IRQ\n");
-				break;
-		}
-
-		/* Reset system interrupt if not already done. */
-		if(irq_type != STS_IRQ_TRANSMIT_STATUS
-			&& irq_type != STS_IRQ_RECEIVE_STATUS)
-		{
-			sktr_reset_interrupt(dev);
-		}
-
-		irq_type = inw(ioaddr + SIFSTS);
-	}
-
-	dev->interrupt = 0;
-
-	return;
-}
-
-/*
- *  Reset the INTERRUPT SYSTEM bit and issue SSB CLEAR command.
- */
-static void sktr_reset_interrupt(struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-	SSB *ssb = &tp->ssb;
-
-	/*
-	 * [Workaround for "Data Late"]
-	 * Set all fields of the SSB to well-defined values so we can
-	 * check if the adapter has written the SSB.
-	 */
-
-	ssb->STS	= (unsigned short) -1;
-	ssb->Parm[0] 	= (unsigned short) -1;
-	ssb->Parm[1] 	= (unsigned short) -1;
-	ssb->Parm[2] 	= (unsigned short) -1;
-
-	/* Free SSB by issuing SSB_CLEAR command after reading IRQ code
-	 * and clear STS_SYSTEM_IRQ bit: enable adapter for further interrupts.
-	 */
-	sktr_exec_sifcmd(dev, CMD_SSB_CLEAR | CMD_CLEAR_SYSTEM_IRQ);
-
-	return;
-}
-
-/*
- * Check if the SSB has actually been written by the adapter.
- */
-static unsigned char sktr_chk_ssb(struct net_local *tp, unsigned short IrqType)
-{
-	SSB *ssb = &tp->ssb;	/* The address of the SSB. */
-
-	/* C 0 1 2 INTERRUPT CODE
-	 * - - - - --------------
-	 * 1 1 1 1 TRANSMIT STATUS
-	 * 1 1 1 1 RECEIVE STATUS
-	 * 1 ? ? 0 COMMAND STATUS
-	 * 0 0 0 0 SCB CLEAR
-	 * 1 1 0 0 RING STATUS
-	 * 0 0 0 0 ADAPTER CHECK
-	 *
-	 * 0 = SSB field not affected by interrupt
-	 * 1 = SSB field is affected by interrupt
-	 *
-	 * C = SSB ADDRESS +0: COMMAND
-	 * 0 = SSB ADDRESS +2: STATUS 0
-	 * 1 = SSB ADDRESS +4: STATUS 1
-	 * 2 = SSB ADDRESS +6: STATUS 2
-	 */
-
-	/* Check if this interrupt does use the SSB. */
-
-	if(IrqType != STS_IRQ_TRANSMIT_STATUS
-		&& IrqType != STS_IRQ_RECEIVE_STATUS
-		&& IrqType != STS_IRQ_COMMAND_STATUS
-		&& IrqType != STS_IRQ_RING_STATUS)
-	{
-		return (1);	/* SSB not involved. */
-	}
-
-	/* Note: All fields of the SSB have been set to all ones (-1) after it
-	 * has last been used by the software (see DriverIsr()).
-	 *
-	 * Check if the affected SSB fields are still unchanged.
-	 */
-
-	if(ssb->STS == (unsigned short) -1)
-		return (0);	/* Command field not yet available. */
-	if(IrqType == STS_IRQ_COMMAND_STATUS)
-		return (1);	/* Status fields not always affected. */
-	if(ssb->Parm[0] == (unsigned short) -1)
-		return (0);	/* Status 1 field not yet available. */
-	if(IrqType == STS_IRQ_RING_STATUS)
-		return (1);	/* Status 2 & 3 fields not affected. */
-
-	/* Note: At this point, the interrupt is either TRANSMIT or RECEIVE. */
-	if(ssb->Parm[1] == (unsigned short) -1)
-		return (0);	/* Status 2 field not yet available. */
-	if(ssb->Parm[2] == (unsigned short) -1)
-		return (0);	/* Status 3 field not yet available. */
-
-	return (1);	/* All SSB fields have been written by the adapter. */
-}
-
-/*
- * Evaluates the command results status in the SSB status field.
- */
-static void sktr_cmd_status_irq(struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-	unsigned short ssb_cmd, ssb_parm_0;
-	unsigned short ssb_parm_1;
-	char *open_err = "Open error -";
-	char *code_err = "Open code -";
-
-	/* Copy the ssb values to local variables */
-	ssb_cmd    = tp->ssb.STS;
-	ssb_parm_0 = tp->ssb.Parm[0];
-	ssb_parm_1 = tp->ssb.Parm[1];
-
-	if(ssb_cmd == OPEN)
-	{
-		tp->Sleeping = 0;
-		if(!tp->ReOpenInProgress)
-	    		wake_up_interruptible(&tp->wait_for_tok_int);
-
-		tp->OpenCommandIssued = 0;
-		tp->ScbInUse = 0;
-
-		if((ssb_parm_0 & 0x00FF) == GOOD_COMPLETION)
-		{
-			/* Success, the adapter is open. */
-			tp->LobeWireFaultLogged	= 0;
-			tp->AdapterOpenFlag 	= 1;
-			tp->AdapterVirtOpenFlag = 1;
-			tp->TransmitCommandActive = 0;
-			sktr_exec_cmd(dev, OC_TRANSMIT);
-			sktr_exec_cmd(dev, OC_RECEIVE);
-
-			if(tp->ReOpenInProgress)
-				tp->ReOpenInProgress = 0;
-
-			return;
-		}
-		else 	/* The adapter did not open. */
-		{
-	    		if(ssb_parm_0 & NODE_ADDR_ERROR)
-				printk(KERN_INFO "%s: Node address error\n",
-					dev->name);
-	    		if(ssb_parm_0 & LIST_SIZE_ERROR)
-				printk(KERN_INFO "%s: List size error\n",
-					dev->name);
-	    		if(ssb_parm_0 & BUF_SIZE_ERROR)
-				printk(KERN_INFO "%s: Buffer size error\n",
-					dev->name);
-	    		if(ssb_parm_0 & TX_BUF_COUNT_ERROR)
-				printk(KERN_INFO "%s: Tx buffer count error\n",
-					dev->name);
-	    		if(ssb_parm_0 & INVALID_OPEN_OPTION)
-				printk(KERN_INFO "%s: Invalid open option\n",
-					dev->name);
-	    		if(ssb_parm_0 & OPEN_ERROR)
-			{
-				/* Show the open phase. */
-				switch(ssb_parm_0 & OPEN_PHASES_MASK)
-				{
-					case LOBE_MEDIA_TEST:
-						if(!tp->LobeWireFaultLogged)
-						{
-							tp->LobeWireFaultLogged = 1;
-							printk(KERN_INFO "%s: %s Lobe wire fault (check cable !).\n", dev->name, open_err);
-		    				}
-						tp->ReOpenInProgress	= 1;
-						tp->AdapterOpenFlag 	= 0;
-						tp->AdapterVirtOpenFlag = 1;
-						sktr_open_adapter(dev);
-						return;
-
-					case PHYSICAL_INSERTION:
-						printk(KERN_INFO "%s: %s Physical insertion.\n", dev->name, open_err);
-						break;
-
-					case ADDRESS_VERIFICATION:
-						printk(KERN_INFO "%s: %s Address verification.\n", dev->name, open_err);
-						break;
-
-					case PARTICIPATION_IN_RING_POLL:
-						printk(KERN_INFO "%s: %s Participation in ring poll.\n", dev->name, open_err);
-						break;
-
-					case REQUEST_INITIALISATION:
-						printk(KERN_INFO "%s: %s Request initialisation.\n", dev->name, open_err);
-						break;
-
-					case FULLDUPLEX_CHECK:
-						printk(KERN_INFO "%s: %s Full duplex check.\n", dev->name, open_err);
-						break;
-
-					default:
-						printk(KERN_INFO "%s: %s Unknown open phase\n", dev->name, open_err);
-						break;
-				}
-
-				/* Show the open errors. */
-				switch(ssb_parm_0 & OPEN_ERROR_CODES_MASK)
-				{
-					case OPEN_FUNCTION_FAILURE:
-						printk(KERN_INFO "%s: %s OPEN_FUNCTION_FAILURE", dev->name, code_err);
-						tp->LastOpenStatus =
-							OPEN_FUNCTION_FAILURE;
-						break;
-
-					case OPEN_SIGNAL_LOSS:
-						printk(KERN_INFO "%s: %s OPEN_SIGNAL_LOSS\n", dev->name, code_err);
-						tp->LastOpenStatus =
-							OPEN_SIGNAL_LOSS;
-						break;
-
-					case OPEN_TIMEOUT:
-						printk(KERN_INFO "%s: %s OPEN_TIMEOUT\n", dev->name, code_err);
-						tp->LastOpenStatus =
-							OPEN_TIMEOUT;
-						break;
-
-					case OPEN_RING_FAILURE:
-						printk(KERN_INFO "%s: %s OPEN_RING_FAILURE\n", dev->name, code_err);
-						tp->LastOpenStatus =
-							OPEN_RING_FAILURE;
-						break;
-
-					case OPEN_RING_BEACONING:
-						printk(KERN_INFO "%s: %s OPEN_RING_BEACONING\n", dev->name, code_err);
-						tp->LastOpenStatus =
-							OPEN_RING_BEACONING;
-						break;
-
-					case OPEN_DUPLICATE_NODEADDR:
-						printk(KERN_INFO "%s: %s OPEN_DUPLICATE_NODEADDR\n", dev->name, code_err);
-						tp->LastOpenStatus =
-							OPEN_DUPLICATE_NODEADDR;
-						break;
-
-					case OPEN_REQUEST_INIT:
-						printk(KERN_INFO "%s: %s OPEN_REQUEST_INIT\n", dev->name, code_err);
-						tp->LastOpenStatus =
-							OPEN_REQUEST_INIT;
-						break;
-
-					case OPEN_REMOVE_RECEIVED:
-						printk(KERN_INFO "%s: %s OPEN_REMOVE_RECEIVED", dev->name, code_err);
-						tp->LastOpenStatus =
-							OPEN_REMOVE_RECEIVED;
-						break;
-
-					case OPEN_FULLDUPLEX_SET:
-						printk(KERN_INFO "%s: %s OPEN_FULLDUPLEX_SET\n", dev->name, code_err);
-						tp->LastOpenStatus =
-							OPEN_FULLDUPLEX_SET;
-						break;
-
-					default:
-						printk(KERN_INFO "%s: %s Unknown open err code", dev->name, code_err);
-						tp->LastOpenStatus =
-							OPEN_FUNCTION_FAILURE;
-						break;
-				}
-			}
-
-			tp->AdapterOpenFlag 	= 0;
-			tp->AdapterVirtOpenFlag = 0;
-
-			return;
-		}
-	}
-	else
-	{
-		if(ssb_cmd != READ_ERROR_LOG)
-			return;
-
-		/* Add values from the error log table to the MAC
-		 * statistics counters and update the errorlogtable
-		 * memory.
-		 */
-		tp->MacStat.line_errors += tp->errorlogtable.Line_Error;
-		tp->MacStat.burst_errors += tp->errorlogtable.Burst_Error;
-		tp->MacStat.A_C_errors += tp->errorlogtable.ARI_FCI_Error;
-		tp->MacStat.lost_frames += tp->errorlogtable.Lost_Frame_Error;
-		tp->MacStat.recv_congest_count += tp->errorlogtable.Rx_Congest_Error;
-		tp->MacStat.rx_errors += tp->errorlogtable.Rx_Congest_Error;
-		tp->MacStat.frame_copied_errors += tp->errorlogtable.Frame_Copied_Error;
-		tp->MacStat.token_errors += tp->errorlogtable.Token_Error;
-		tp->MacStat.dummy1 += tp->errorlogtable.DMA_Bus_Error;
-		tp->MacStat.dummy1 += tp->errorlogtable.DMA_Parity_Error;
-		tp->MacStat.abort_delimiters += tp->errorlogtable.AbortDelimeters;
-		tp->MacStat.frequency_errors += tp->errorlogtable.Frequency_Error;
-		tp->MacStat.internal_errors += tp->errorlogtable.Internal_Error;
-	}
-
-	return;
-}
-
-/*
- * The inverse routine to sktr_open().
- */
-static int sktr_close(struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-
-	dev->tbusy = 1;
-	dev->start = 0;
-
-	del_timer(&tp->timer);
-
-	/* Flush the Tx and disable Rx here. */
-
-	tp->HaltInProgress 	= 1;
-	sktr_exec_cmd(dev, OC_CLOSE);
-	tp->timer.expires	= jiffies + 1*HZ;
-	tp->timer.function 	= sktr_timer_end_wait;
-	tp->timer.data 		= (unsigned long)dev;
-	add_timer(&tp->timer);
-
-	sktr_enable_interrupts(dev);
-
-	tp->Sleeping = 1;
-	interruptible_sleep_on(&tp->wait_for_tok_int);
-	tp->TransmitCommandActive = 0;
-    
-	del_timer(&tp->timer);
-	sktr_disable_interrupts(dev);
-   
-	if(dev->dma > 0) 
-	{
-		unsigned long flags=claim_dma_lock();
-		disable_dma(dev->dma);
-		release_dma_lock(flags);
-	}
-	
-	outw(0xFF00, dev->base_addr + SIFCMD);
-	if(dev->dma > 0)
-		outb(0xff, dev->base_addr + POSREG);
-
-#ifdef MODULE
-	MOD_DEC_USE_COUNT;
-#endif
-
-	sktr_cancel_tx_queue(tp);
-
-	return (0);
-}
-
-/*
- * Get the current statistics. This may be called with the card open
- * or closed.
- */
-static struct enet_statistics *sktr_get_stats(struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-
-	return ((struct enet_statistics *)&tp->MacStat);
-}
-
-/*
- * Set or clear the multicast filter for this adapter.
- */
-static void sktr_set_multicast_list(struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-	unsigned int OpenOptions;
-
-	OpenOptions = tp->ocpl.OPENOptions &
-		~(PASS_ADAPTER_MAC_FRAMES
-		| PASS_ATTENTION_FRAMES
-		| PASS_BEACON_MAC_FRAMES
-		| COPY_ALL_MAC_FRAMES
-		| COPY_ALL_NON_MAC_FRAMES);
-
-	if(dev->flags & IFF_PROMISC)
-		/* Enable promiscuous mode */
-		OpenOptions |= COPY_ALL_NON_MAC_FRAMES | COPY_ALL_MAC_FRAMES;
-	else
-	{
-		if(dev->flags & IFF_ALLMULTI)
-			/* || dev->mc_count > HW_MAX_ADDRS) */
-		{
-			/* Disable promiscuous mode, use normal mode. */
-		}
-		else
-		{
-			if(dev->mc_count)
-			{
-				/* Walk the address list, and load the filter */
-			}
-		}
-	}
-
-	tp->ocpl.OPENOptions = OpenOptions;
-	sktr_exec_cmd(dev, OC_MODIFY_OPEN_PARMS);
-
-	return;
-}
-
-/*
- * Wait for some time (microseconds)
- */
-static void sktr_wait(unsigned long time)
-{
-	long tmp;
-
-	tmp = jiffies + time/(1000000/HZ);
-	do {
-  		current->state 		= TASK_INTERRUPTIBLE;
-		tmp = schedule_timeout(tmp);
-	} while(time_after(tmp, jiffies));
-
-	return;
-}
-
-/*
- * Write a command value to the SIFCMD register
- */
-static void sktr_exec_sifcmd(struct net_device *dev, unsigned int WriteValue)
-{
-	int ioaddr = dev->base_addr;
-	unsigned short cmd;
-	unsigned short SifStsValue;
-	unsigned long loop_counter;
-
-	WriteValue = ((WriteValue ^ CMD_SYSTEM_IRQ) | CMD_INTERRUPT_ADAPTER);
-	cmd = (unsigned short)WriteValue;
-	loop_counter = 0,5 * 800000;
-	do {
-		SifStsValue = inw(ioaddr + SIFSTS);
-	} while((SifStsValue & CMD_INTERRUPT_ADAPTER) && loop_counter--);
-	outw(cmd, ioaddr + SIFCMD);
-
-	return;
-}
-
-/*
- * Processes adapter hardware reset, halts adapter and downloads firmware,
- * clears the halt bit.
- */
-static int sktr_reset_adapter(struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-	unsigned short *fw_ptr = (unsigned short *)&sktr_code;
-	unsigned short count, c;
-	int ioaddr = dev->base_addr;
-
-	/* Hardware adapter reset */
-	outw(ACL_ARESET, ioaddr + SIFACL);
-	sktr_wait(40);
-
-	c = inw(ioaddr + SIFACL);
-	sktr_wait(20);
-
-	if(dev->dma == 0)	/* For PCI adapters */
-	{
-		c &= ~(ACL_SPEED4 | ACL_SPEED16);	/* Clear bits */
-		if(tp->DataRate == SPEED_4)
-			c |= ACL_SPEED4;		/* Set 4Mbps */
-		else
-			c |= ACL_SPEED16;		/* Set 16Mbps */
-	}
-
-	/* In case a command is pending - forget it */
-	tp->ScbInUse = 0;
-
-	c &= ~ACL_ARESET;		/* Clear adapter reset bit */
-	c |=  ACL_CPHALT;		/* Halt adapter CPU, allow download */
-	c &= ~ACL_PSDMAEN;		/* Clear pseudo dma bit */
-	outw(c, ioaddr + SIFACL);
-	sktr_wait(40);
-
-	/* Download firmware via DIO interface: */
-	do {
-		/* Download first address part */
-		outw(*fw_ptr, ioaddr + SIFADX);
-		fw_ptr++;
-
-		/* Download second address part */
-		outw(*fw_ptr, ioaddr + SIFADD);
-		fw_ptr++;
-
-		if((count = *fw_ptr) != 0)	/* Load loop counter */
-		{
-			fw_ptr++;	/* Download block data */
-			for(; count > 0; count--)
-			{
-				outw(*fw_ptr, ioaddr + SIFINC);
-				fw_ptr++;
-			}
-		}
-		else	/* Stop, if last block downloaded */
-		{
-			c = inw(ioaddr + SIFACL);
-			c &= (~ACL_CPHALT | ACL_SINTEN);
-
-			/* Clear CPHALT and start BUD */
-			outw(c, ioaddr + SIFACL);
-			return (1);
-		}
-	} while(count == 0);
-
-	return (-1);
-}
-
-/*
- * Starts bring up diagnostics of token ring adapter and evaluates
- * diagnostic results.
- */
-static int sktr_bringup_diags(struct net_device *dev)
-{
-	int loop_cnt, retry_cnt;
-	unsigned short Status;
-	int ioaddr = dev->base_addr;
-
-	sktr_wait(HALF_SECOND);
-	sktr_exec_sifcmd(dev, EXEC_SOFT_RESET);
-	sktr_wait(HALF_SECOND);
-
-	retry_cnt = BUD_MAX_RETRIES;	/* maximal number of retrys */
-
-	do {
-		retry_cnt--;
-		if(sktr_debug > 3)
-			printk(KERN_INFO "BUD-Status: \n");
-		loop_cnt = BUD_MAX_LOOPCNT;	/* maximum: three seconds*/
-		do {			/* Inspect BUD results */
-			loop_cnt--;
-			sktr_wait(HALF_SECOND);
-			Status = inw(ioaddr + SIFSTS);
-			Status &= STS_MASK;
-
-			if(sktr_debug > 3)
-				printk(KERN_INFO " %04X \n", Status);
-			/* BUD successfully completed */
-			if(Status == STS_INITIALIZE)
-				return (1);
-		/* Unrecoverable hardware error, BUD not completed? */
-		} while((loop_cnt > 0) && ((Status & (STS_ERROR | STS_TEST))
-			!= (STS_ERROR | STS_TEST)));
-
-		/* Error preventing completion of BUD */
-		if(retry_cnt > 0)
-		{
-			printk(KERN_INFO "%s: Adapter Software Reset.\n", 
-				dev->name);
-			sktr_exec_sifcmd(dev, EXEC_SOFT_RESET);
-			sktr_wait(HALF_SECOND);
-		}
-	} while(retry_cnt > 0);
-
-	Status = inw(ioaddr + SIFSTS);
-	Status &= STS_ERROR_MASK;	/* Hardware error occurred! */
-
-	printk(KERN_INFO "%s: Bring Up Diagnostics Error (%04X) occurred\n",
-		dev->name, Status);
-
-	return (-1);
-}
-
-/*
- * Copy initialisation data to adapter memory, beginning at address
- * 1:0A00; Starting DMA test and evaluating result bits.
- */
-static int sktr_init_adapter(struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-
-	const unsigned char SCB_Test[6] = {0x00, 0x00, 0xC1, 0xE2, 0xD4, 0x8B};
-	const unsigned char SSB_Test[8] = {0xFF, 0xFF, 0xD1, 0xD7,
-						0xC5, 0xD9, 0xC3, 0xD4};
-	void *ptr = (void *)&tp->ipb;
-	unsigned short *ipb_ptr = (unsigned short *)ptr;
-	unsigned char *cb_ptr = (unsigned char *) &tp->scb;
-	unsigned char *sb_ptr = (unsigned char *) &tp->ssb;
-	unsigned short Status;
-	int i, loop_cnt, retry_cnt;
-	int ioaddr = dev->base_addr;
-
-	/* Normalize: byte order low/high, word order high/low! (only IPB!) */
-	tp->ipb.SCB_Addr = SWAPW(virt_to_bus(&tp->scb));
-	tp->ipb.SSB_Addr = SWAPW(virt_to_bus(&tp->ssb));
-
-	/* Maximum: three initialization retries */
-	retry_cnt = INIT_MAX_RETRIES;
-
-	do {
-		retry_cnt--;
-
-		/* Transfer initialization block */
-		outw(0x0001, ioaddr + SIFADX);
-
-		/* To address 0001:0A00 of adapter RAM */
-		outw(0x0A00, ioaddr + SIFADD);
-
-		/* Write 11 words to adapter RAM */
-		for(i = 0; i < 11; i++)
-			outw(ipb_ptr[i], ioaddr + SIFINC);
-
-		/* Execute SCB adapter command */
-		sktr_exec_sifcmd(dev, CMD_EXECUTE);
-
-		loop_cnt = INIT_MAX_LOOPCNT;	/* Maximum: 11 seconds */
-
-		/* While remaining retries, no error and not completed */
-		do {
-			Status = 0;
-			loop_cnt--;
-			sktr_wait(HALF_SECOND);
-
-			/* Mask interesting status bits */
-			Status = inw(ioaddr + SIFSTS);
-			Status &= STS_MASK;
-		} while(((Status &(STS_INITIALIZE | STS_ERROR | STS_TEST)) != 0)
-			&& ((Status & STS_ERROR) == 0) && (loop_cnt != 0));
-
-		if((Status & (STS_INITIALIZE | STS_ERROR | STS_TEST)) == 0)
-		{
-			/* Initialization completed without error */
-			i = 0;
-			do {	/* Test if contents of SCB is valid */
-				if(SCB_Test[i] != *(cb_ptr + i))
-					/* DMA data error: wrong data in SCB */
-					return (-1);
-				i++;
-			} while(i < 6);
-
-			i = 0;
-			do {	/* Test if contents of SSB is valid */
-				if(SSB_Test[i] != *(sb_ptr + i))
-					/* DMA data error: wrong data in SSB */
-					return (-1);
-				i++;
-			} while (i < 8);
-
-			return (1);	/* Adapter successfully initialized */
-		}
-		else
-		{
-			if((Status & STS_ERROR) != 0)
-			{
-				/* Initialization error occurred */
-				Status = inw(ioaddr + SIFSTS);
-				Status &= STS_ERROR_MASK;
-				/* ShowInitialisationErrorCode(Status); */
-				return (-1); /* Unrecoverable error */
-			}
-			else
-			{
-				if(retry_cnt > 0)
-				{
-					/* Reset adapter and try init again */
-					sktr_exec_sifcmd(dev, EXEC_SOFT_RESET);
-					sktr_wait(HALF_SECOND);
-				}
-			}
-		}
-	} while(retry_cnt > 0);
-
-	return (-1);
-}
-
-/*
- * Check for outstanding commands in command queue and tries to execute
- * command immediately. Corresponding command flag in command queue is cleared.
- */
-static void sktr_chk_outstanding_cmds(struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-	unsigned long Addr = 0;
-	unsigned char i = 0;
-
-	if(tp->CMDqueue == 0)
-		return;		/* No command execution */
-
-	/* If SCB in use: no command */
-	if(tp->ScbInUse == 1)
-		return;
-
-	/* Check if adapter is opened, avoiding COMMAND_REJECT
-	 * interrupt by the adapter!
-	 */
-	if(tp->AdapterOpenFlag == 0)
-	{
-		if(tp->CMDqueue & OC_OPEN)
-		{
-			/* Execute OPEN command	*/
-			tp->CMDqueue ^= OC_OPEN;
-
-			/* Copy the 18 bytes of the product ID */
-			while((AdapterName[i] != '\0') && (i < PROD_ID_SIZE))
-			{
-				tp->ProductID[i] = AdapterName[i];
-				i++;
-			}
-
-			Addr = htonl(virt_to_bus(&tp->ocpl));
-			tp->scb.Parm[0] = LOWORD(Addr);
-			tp->scb.Parm[1] = HIWORD(Addr);
-			tp->scb.CMD = OPEN;
-		}
-		else
-			/* No OPEN command queued, but adapter closed. Note:
-			 * We'll try to re-open the adapter in DriverPoll()
-			 */
-			return;		/* No adapter command issued */
-	}
-	else
-	{
-		/* Adapter is open; evaluate command queue: try to execute
-		 * outstanding commands (depending on priority!) CLOSE
-		 * command queued
-		 */
-		if(tp->CMDqueue & OC_CLOSE)
-		{
-			tp->CMDqueue ^= OC_CLOSE;
-			tp->AdapterOpenFlag = 0;
-			tp->scb.Parm[0] = 0; /* Parm[0], Parm[1] are ignored */
-			tp->scb.Parm[1] = 0; /* but should be set to zero! */
-			tp->scb.CMD = CLOSE;
-			if(!tp->HaltInProgress)
-				tp->CMDqueue |= OC_OPEN; /* re-open adapter */
-			else
-				tp->CMDqueue = 0;	/* no more commands */
-		}
-		else
-		{
-			if(tp->CMDqueue & OC_RECEIVE)
-			{
-				tp->CMDqueue ^= OC_RECEIVE;
-				Addr = htonl(virt_to_bus(tp->RplHead));
-				tp->scb.Parm[0] = LOWORD(Addr);
-				tp->scb.Parm[1] = HIWORD(Addr);
-				tp->scb.CMD = RECEIVE;
-			}
-			else
-			{
-				if(tp->CMDqueue & OC_TRANSMIT_HALT)
-				{
-					/* NOTE: TRANSMIT.HALT must be checked 
-					 * before TRANSMIT.
-					 */
-					tp->CMDqueue ^= OC_TRANSMIT_HALT;
-					tp->scb.CMD = TRANSMIT_HALT;
-
-					/* Parm[0] and Parm[1] are ignored
-					 * but should be set to zero!
-					 */
-					tp->scb.Parm[0] = 0;
-					tp->scb.Parm[1] = 0;
-				}
-				else
-				{
-					if(tp->CMDqueue & OC_TRANSMIT)
-					{
-						/* NOTE: TRANSMIT must be 
-						 * checked after TRANSMIT.HALT
-						 */
-						if(tp->TransmitCommandActive)
-						{
-							if(!tp->TransmitHaltScheduled)
-							{
-								tp->TransmitHaltScheduled = 1;
-								sktr_exec_cmd(dev, OC_TRANSMIT_HALT) ;
-							}
-							tp->TransmitCommandActive = 0;
-							return;
-						}
-
-						tp->CMDqueue ^= OC_TRANSMIT;
-						sktr_cancel_tx_queue(tp);
-						Addr = htonl(virt_to_bus(tp->TplBusy));
-						tp->scb.Parm[0] = LOWORD(Addr);
-						tp->scb.Parm[1] = HIWORD(Addr);
-						tp->scb.CMD = TRANSMIT;
-						tp->TransmitCommandActive = 1;
-					}
-					else
-					{
-						if(tp->CMDqueue & OC_MODIFY_OPEN_PARMS)
-						{
-							tp->CMDqueue ^= OC_MODIFY_OPEN_PARMS;
-							tp->scb.Parm[0] = tp->ocpl.OPENOptions; /* new OPEN options*/
-							tp->scb.Parm[0] |= ENABLE_FULL_DUPLEX_SELECTION;
-							tp->scb.Parm[1] = 0; /* is ignored but should be zero */
-							tp->scb.CMD = MODIFY_OPEN_PARMS;
-						}
-						else
-						{
-							if(tp->CMDqueue & OC_SET_FUNCT_ADDR)
-							{
-								tp->CMDqueue ^= OC_SET_FUNCT_ADDR;
-								tp->scb.Parm[0] = LOWORD(tp->ocpl.FunctAddr);
-								tp->scb.Parm[1] = HIWORD(tp->ocpl.FunctAddr);
-								tp->scb.CMD = SET_FUNCT_ADDR;
-							}
-							else
-							{
-								if(tp->CMDqueue & OC_SET_GROUP_ADDR)
-								{
-									tp->CMDqueue ^= OC_SET_GROUP_ADDR;
-									tp->scb.Parm[0] = LOWORD(tp->ocpl.GroupAddr);
-									tp->scb.Parm[1] = HIWORD(tp->ocpl.GroupAddr);
-									tp->scb.CMD = SET_GROUP_ADDR;
-								}
-								else
-								{
-									if(tp->CMDqueue & OC_READ_ERROR_LOG)
-									{
-										tp->CMDqueue ^= OC_READ_ERROR_LOG;
-										Addr = htonl(virt_to_bus(&tp->errorlogtable));
-										tp->scb.Parm[0] = LOWORD(Addr);
-										tp->scb.Parm[1] = HIWORD(Addr);
-										tp->scb.CMD = READ_ERROR_LOG;
-									}
-									else
-									{
-										printk(KERN_WARNING "CheckForOutstandingCommand: unknown Command\n");
-										tp->CMDqueue = 0;
-										return;
-									}
-								}
-							}
-						}
-					}
-				}
-			}
-		}
-	}
-
-	tp->ScbInUse = 1;	/* Set semaphore: SCB in use. */
-
-	/* Execute SCB and generate IRQ when done. */
-	sktr_exec_sifcmd(dev, CMD_EXECUTE | CMD_SCB_REQUEST);
-
-	return;
-}
-
-/*
- * IRQ conditions: signal loss on the ring, transmit or receive of beacon
- * frames (disabled if bit 1 of OPEN option is set); report error MAC
- * frame transmit (disabled if bit 2 of OPEN option is set); open or short
- * cirquit fault on the lobe is detected; remove MAC frame received;
- * error counter overflow (255); opened adapter is the only station in ring.
- * After some of the IRQs the adapter is closed!
- */
-static void sktr_ring_status_irq(struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-
-	tp->CurrentRingStatus = SWAPB(tp->ssb.Parm[0]);
-
-	/* First: fill up statistics */
-	if(tp->ssb.Parm[0] & SIGNAL_LOSS)
-	{
-		printk(KERN_INFO "%s: Signal Loss\n", dev->name);
-		tp->MacStat.line_errors++;
-	}
-
-	/* Adapter is closed, but initialized */
-	if(tp->ssb.Parm[0] & LOBE_WIRE_FAULT)
-	{
-		printk(KERN_INFO "%s: Lobe Wire Fault, Reopen Adapter\n", 
-			dev->name);
-		tp->MacStat.line_errors++;
-	}
-
-	if(tp->ssb.Parm[0] & RING_RECOVERY)
-		printk(KERN_INFO "%s: Ring Recovery\n", dev->name);
-
-	/* Counter overflow: read error log */
-	if(tp->ssb.Parm[0] & COUNTER_OVERFLOW)
-	{
-		printk(KERN_INFO "%s: Counter Overflow\n", dev->name);
-		sktr_exec_cmd(dev, OC_READ_ERROR_LOG);
-	}
-
-	/* Adapter is closed, but initialized */
-	if(tp->ssb.Parm[0] & REMOVE_RECEIVED)
-		printk(KERN_INFO "%s: Remove Received, Reopen Adapter\n", 
-			dev->name);
-
-	/* Adapter is closed, but initialized */
-	if(tp->ssb.Parm[0] & AUTO_REMOVAL_ERROR)
-		printk(KERN_INFO "%s: Auto Removal Error, Reopen Adapter\n", 
-			dev->name);
-
-	if(tp->ssb.Parm[0] & HARD_ERROR)
-		printk(KERN_INFO "%s: Hard Error\n", dev->name);
-
-	if(tp->ssb.Parm[0] & SOFT_ERROR)
-		printk(KERN_INFO "%s: Soft Error\n", dev->name);
-
-	if(tp->ssb.Parm[0] & TRANSMIT_BEACON)
-		printk(KERN_INFO "%s: Transmit Beacon\n", dev->name);
-
-	if(tp->ssb.Parm[0] & SINGLE_STATION)
-		printk(KERN_INFO "%s: Single Station\n", dev->name);
-
-	/* Check if adapter has been closed */
-	if(tp->ssb.Parm[0] & ADAPTER_CLOSED)
-	{
-		printk(KERN_INFO "%s: Adapter closed (Reopening)," 
-			"QueueSkb %d, CurrentRingStat %x\n",
-			dev->name, tp->QueueSkb, tp->CurrentRingStatus);
-		tp->AdapterOpenFlag = 0;
-		sktr_open_adapter(dev);
-	}
-
-	return;
-}
-
-/*
- * Issued if adapter has encountered an unrecoverable hardware
- * or software error.
- */
-static void sktr_chk_irq(struct net_device *dev)
-{
-	int i;
-	unsigned short AdapterCheckBlock[4];
-	unsigned short ioaddr = dev->base_addr;
-	struct net_local *tp = (struct net_local *)dev->priv;
-
-	tp->AdapterOpenFlag = 0;	/* Adapter closed now */
-
-	/* Page number of adapter memory */
-	outw(0x0001, ioaddr + SIFADX);
-	/* Address offset */
-	outw(CHECKADDR, ioaddr + SIFADR);
-
-	/* Reading 8 byte adapter check block. */
-	for(i = 0; i < 4; i++)
-		AdapterCheckBlock[i] = inw(ioaddr + SIFINC);
-
-	if(sktr_debug > 3)
-	{
-		printk("%s: AdapterCheckBlock: ", dev->name);
-		for (i = 0; i < 4; i++)
-			printk("%04X", AdapterCheckBlock[i]);
-		printk("\n");
-	}
-
-	switch(AdapterCheckBlock[0])
-	{
-		case DIO_PARITY:
-			printk(KERN_INFO "%s: DIO parity error\n", dev->name);
-			break;
-
-		case DMA_READ_ABORT:
-			printk(KERN_INFO "%s DMA read operation aborted:\n",
-				dev->name);
-			switch (AdapterCheckBlock[1])
-			{
-				case 0:
-					printk(KERN_INFO "Timeout\n");
-					printk(KERN_INFO "Address: %04X %04X\n",
-						AdapterCheckBlock[2],
-						AdapterCheckBlock[3]);
-					break;
-
-				case 1:
-					printk(KERN_INFO "Parity error\n");
-					printk(KERN_INFO "Address: %04X %04X\n",
-						AdapterCheckBlock[2], 
-						AdapterCheckBlock[3]);
-					break;
-
-				case 2: 
-					printk(KERN_INFO "Bus error\n");
-					printk(KERN_INFO "Address: %04X %04X\n",
-						AdapterCheckBlock[2], 
-						AdapterCheckBlock[3]);
-					break;
-
-				default:
-					printk(KERN_INFO "Unknown error.\n");
-					break;
-			}
-			break;
-
-		case DMA_WRITE_ABORT:
-			printk(KERN_INFO "%s: DMA write operation aborted: \n",
-				dev->name);
-			switch (AdapterCheckBlock[1])
-			{
-				case 0: 
-					printk(KERN_INFO "Timeout\n");
-					printk(KERN_INFO "Address: %04X %04X\n",
-						AdapterCheckBlock[2], 
-						AdapterCheckBlock[3]);
-					break;
-
-				case 1: 
-					printk(KERN_INFO "Parity error\n");
-					printk(KERN_INFO "Address: %04X %04X\n",
-						AdapterCheckBlock[2], 
-						AdapterCheckBlock[3]);
-					break;
-
-				case 2: 
-					printk(KERN_INFO "Bus error\n");
-					printk(KERN_INFO "Address: %04X %04X\n",
-						AdapterCheckBlock[2], 
-						AdapterCheckBlock[3]);
-					break;
-
-				default:
-					printk(KERN_INFO "Unknown error.\n");
-					break;
-			}
-			break;
-
-		case ILLEGAL_OP_CODE:
-			printk("%s: Illegal operation code in firmware\n",
-				dev->name);
-			/* Parm[0-3]: adapter internal register R13-R15 */
-			break;
-
-		case PARITY_ERRORS:
-			printk("%s: Adapter internal bus parity error\n",
-				dev->name);
-			/* Parm[0-3]: adapter internal register R13-R15 */
-			break;
-
-		case RAM_DATA_ERROR:
-			printk("%s: RAM data error\n", dev->name);
-			/* Parm[0-1]: MSW/LSW address of RAM location. */
-			break;
-
-		case RAM_PARITY_ERROR:
-			printk("%s: RAM parity error\n", dev->name);
-			/* Parm[0-1]: MSW/LSW address of RAM location. */
-			break;
-
-		case RING_UNDERRUN:
-			printk("%s: Internal DMA underrun detected\n",
-				dev->name);
-			break;
-
-		case INVALID_IRQ:
-			printk("%s: Unrecognized interrupt detected\n",
-				dev->name);
-			/* Parm[0-3]: adapter internal register R13-R15 */
-			break;
-
-		case INVALID_ERROR_IRQ:
-			printk("%s: Unrecognized error interrupt detected\n",
-				dev->name);
-			/* Parm[0-3]: adapter internal register R13-R15 */
-			break;
-
-		case INVALID_XOP:
-			printk("%s: Unrecognized XOP request detected\n",
-				dev->name);
-			/* Parm[0-3]: adapter internal register R13-R15 */
-			break;
-
-		default:
-			printk("%s: Unknown status", dev->name);
-			break;
-	}
-
-	if(sktr_chipset_init(dev) == 1)
-	{
-		/* Restart of firmware successful */
-		tp->AdapterOpenFlag = 1;
-	}
-
-	return;
-}
-
-/*
- * Internal adapter pointer to RAM data are copied from adapter into
- * host system.
- */
-static void sktr_read_ptr(struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-	unsigned short adapterram;
-
-	sktr_read_ram(dev, (unsigned char *)&tp->intptrs.BurnedInAddrPtr,
-			ADAPTER_INT_PTRS, 16);
-	sktr_read_ram(dev, (unsigned char *)&adapterram,
-			(unsigned short)SWAPB(tp->intptrs.AdapterRAMPtr), 2);
-
-	printk(KERN_INFO "%s: Adapter RAM size: %d K\n", 
-		dev->name, SWAPB(adapterram));
-
-	return;
-}
-
-/*
- * Reads a number of bytes from adapter to system memory.
- */
-static void sktr_read_ram(struct net_device *dev, unsigned char *Data,
-				unsigned short Address, int Length)
-{
-	int i;
-	unsigned short old_sifadx, old_sifadr, InWord;
-	unsigned short ioaddr = dev->base_addr;
-
-	/* Save the current values */
-	old_sifadx = inw(ioaddr + SIFADX);
-	old_sifadr = inw(ioaddr + SIFADR);
-
-	/* Page number of adapter memory */
-	outw(0x0001, ioaddr + SIFADX);
-	/* Address offset in adapter RAM */
-	outw(Address, ioaddr + SIFADR);
-
-	/* Copy len byte from adapter memory to system data area. */
-	i = 0;
-	for(;;)
-	{
-		InWord = inw(ioaddr + SIFINC);
-
-		*(Data + i) = HIBYTE(InWord);	/* Write first byte */
-		if(++i == Length)		/* All is done break */
-			break;
-
-		*(Data + i) = LOBYTE(InWord);	/* Write second byte */
-		if (++i == Length)		/* All is done break */
-			break;
-	}
-
-	/* Restore original values */
-	outw(old_sifadx, ioaddr + SIFADX);
-	outw(old_sifadr, ioaddr + SIFADR);
-
-	return;
-}
-
-/*
- * Reads MAC address from adapter ROM.
- */
-static void sktr_read_addr(struct net_device *dev, unsigned char *Address)
-{
-	int i, In;
-	unsigned short ioaddr = dev->base_addr;
-
-	/* Address: 0000:0000 */
-	outw(0, ioaddr + SIFADX);
-	outw(0, ioaddr + SIFADR);
-
-	/* Read six byte MAC address data */
-	for(i = 0; i < 6; i++)
-	{
-		In = inw(ioaddr + SIFINC);
-		*(Address + i) = (unsigned char)(In >> 8);
-	}
-
-	return;
-}
-
-/*
- * Cancel all queued packets in the transmission queue.
- */
-static void sktr_cancel_tx_queue(struct net_local* tp)
-{
-	TPL *tpl;
-	struct sk_buff *skb;
-
-	/*
-	 * NOTE: There must not be an active TRANSMIT command pending, when
-	 * this function is called.
-	 */
-	if(tp->TransmitCommandActive)
-		return;
-
-	for(;;)
-	{
-		tpl = tp->TplBusy;
-		if(!tpl->BusyFlag)
-			break;
-		/* "Remove" TPL from busy list. */
-		tp->TplBusy = tpl->NextTPLPtr;
-		sktr_write_tpl_status(tpl, 0);	/* Clear VALID bit */
-		tpl->BusyFlag = 0;		/* "free" TPL */
-
-		printk(KERN_INFO "Cancel tx (%08lXh).\n", (unsigned long)tpl);
-
-		dev_kfree_skb(tpl->Skb);
-	}
-
-	for(;;)
-	{
-		skb = skb_dequeue(&tp->SendSkbQueue);
-		if(skb == NULL)
-			break;
-		tp->QueueSkb++;
-		dev_kfree_skb(skb);
-	}
-
-	return;
-}
-
-/*
- * This function is called whenever a transmit interrupt is generated by the
- * adapter. For a command complete interrupt, it is checked if we have to
- * issue a new transmit command or not.
- */
-static void sktr_tx_status_irq(struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-	unsigned char HighByte, HighAc, LowAc;
-	TPL *tpl;
-
-	/* NOTE: At this point the SSB from TRANSMIT STATUS is no longer
-	 * available, because the CLEAR SSB command has already been issued.
-	 *
-	 * Process all complete transmissions.
-	 */
-
-	for(;;)
-	{
-		tpl = tp->TplBusy;
-		if(!tpl->BusyFlag || (tpl->Status
-			& (TX_VALID | TX_FRAME_COMPLETE))
-			!= TX_FRAME_COMPLETE)
-		{
-			break;
-		}
-
-		/* "Remove" TPL from busy list. */
-		tp->TplBusy = tpl->NextTPLPtr ;
-
-		if(sktr_debug > 3)
-			sktr_dump(tpl->MData, SWAPB(tpl->FrameSize));
-
-		/* Check the transmit status field only for directed frames*/
-		if(DIRECTED_FRAME(tpl) && (tpl->Status & TX_ERROR) == 0)
-		{
-			HighByte = GET_TRANSMIT_STATUS_HIGH_BYTE(tpl->Status);
-			HighAc   = GET_FRAME_STATUS_HIGH_AC(HighByte);
-			LowAc    = GET_FRAME_STATUS_LOW_AC(HighByte);
-
-			if((HighAc != LowAc) || (HighAc == AC_NOT_RECOGNIZED))
-			{
-				printk(KERN_INFO "%s: (DA=%08lX not recognized)",
-					dev->name,
-					*(unsigned long *)&tpl->MData[2+2]);
-			}
-			else
-			{
-				if(sktr_debug > 3)
-					printk("%s: Directed frame tx'd\n", 
-						dev->name);
-			}
-		}
-		else
-		{
-			if(!DIRECTED_FRAME(tpl))
-			{
-				if(sktr_debug > 3)
-					printk("%s: Broadcast frame tx'd\n",
-						dev->name);
-			}
-		}
-
-                tp->MacStat.tx_packets++;
-		dev_kfree_skb(tpl->Skb);
-		tpl->BusyFlag = 0;	/* "free" TPL */
-	}
-
-	dev->tbusy = 0;
-	if(tp->QueueSkb < MAX_TX_QUEUE)
-		sktr_hardware_send_packet(dev, tp);
-
-	return;
-}
-
-/*
- * Called if a frame receive interrupt is generated by the adapter.
- * Check if the frame is valid and indicate it to system.
- */
-static void sktr_rcv_status_irq(struct net_device *dev)
-{
-	struct net_local *tp = (struct net_local *)dev->priv;
-	unsigned char *ReceiveDataPtr;
-	struct sk_buff *skb;
-	unsigned int Length, Length2;
-	RPL *rpl;
-	RPL *SaveHead;
-
-	/* NOTE: At this point the SSB from RECEIVE STATUS is no longer
-	 * available, because the CLEAR SSB command has already been issued.
-	 *
-	 * Process all complete receives.
-	 */
-
-	for(;;)
-	{
-		rpl = tp->RplHead;
-		if(rpl->Status & RX_VALID)
-			break;		/* RPL still in use by adapter */
-
-		/* Forward RPLHead pointer to next list. */
-		SaveHead = tp->RplHead;
-		tp->RplHead = rpl->NextRPLPtr;
-
-		/* Get the frame size (Byte swap for Intel).
-		 * Do this early (see workaround comment below)
-		 */
-		Length = (unsigned short)SWAPB(rpl->FrameSize);
-
-		/* Check if the Frame_Start, Frame_End and
-		 * Frame_Complete bits are set.
-		 */
-		if((rpl->Status & VALID_SINGLE_BUFFER_FRAME)
-			== VALID_SINGLE_BUFFER_FRAME)
-		{
-			ReceiveDataPtr = rpl->MData;
-
-			/* Workaround for delayed write of FrameSize on ISA
-			 * (FrameSize is false but valid-bit is reset)
-			 * Frame size is set to zero when the RPL is freed.
-			 * Length2 is there because there have also been
-			 * cases where the FrameSize was partially written
-			 */
-			Length2 = (unsigned short)SWAPB(rpl->FrameSize);
-
-			if(Length == 0 || Length != Length2)
-			{
-				tp->RplHead = SaveHead;
-				break;	/* Return to sktr_interrupt */
-			}
-
-			/* Drop frames sent by myself */
-			if(sktr_chk_frame(dev, rpl->MData))
-			{
-				printk(KERN_INFO "%s: Received my own frame\n",
-					dev->name);
-				if(rpl->Skb != NULL)
-					dev_kfree_skb(rpl->Skb);
-			}
-			else
-			{
-				sktr_update_rcv_stats(tp,ReceiveDataPtr,Length);
-
-				if(sktr_debug > 3)
-					printk("%s: Packet Length %04X (%d)\n",
-						dev->name, Length, Length);
-
-				/* Indicate the received frame to system the
-				 * adapter does the Source-Routing padding for 
-				 * us. See: OpenOptions in sktr_init_opb()
-				 */
-				skb = rpl->Skb;
-				if(rpl->SkbStat == SKB_UNAVAILABLE)
-				{
-					/* Try again to allocate skb */
-					skb = dev_alloc_skb(tp->MaxPacketSize);
-					if(skb == NULL)
-					{
-						/* Update Stats ?? */
-					}
-					else
-					{
-						skb->dev	= dev;
-						skb_put(skb, tp->MaxPacketSize);
-						rpl->SkbStat 	= SKB_DATA_COPY;
-						ReceiveDataPtr 	= rpl->MData;
-					}
-				}
-
-				if(rpl->SkbStat == SKB_DATA_COPY
-					|| rpl->SkbStat == SKB_DMA_DIRECT)
-				{
-					if(rpl->SkbStat == SKB_DATA_COPY)
-					{
-						memmove(skb->data, ReceiveDataPtr, Length);
-					}
-
-					/* Deliver frame to system */
-					rpl->Skb = NULL;
-					skb_trim(skb,Length);
-					skb->protocol = tr_type_trans(skb,dev);
-					netif_rx(skb);
-				}
-			}
-		}
-		else	/* Invalid frame */
-		{
-			if(rpl->Skb != NULL)
-				dev_kfree_skb(rpl->Skb);
-
-			/* Skip list. */
-			if(rpl->Status & RX_START_FRAME)
-				/* Frame start bit is set -> overflow. */
-				tp->MacStat.rx_errors++;
-		}
-
-		/* Allocate new skb for rpl */
-		rpl->Skb = dev_alloc_skb(tp->MaxPacketSize);
-
-		/* skb == NULL ? then use local buffer */
-		if(rpl->Skb == NULL)
-		{
-			rpl->SkbStat = SKB_UNAVAILABLE;
-			rpl->FragList[0].DataAddr = htonl(virt_to_bus(tp->LocalRxBuffers[rpl->RPLIndex]));
-			rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
-		}
-		else	/* skb != NULL */
-		{
-			rpl->Skb->dev = dev;
-			skb_put(rpl->Skb, tp->MaxPacketSize);
-
-			/* Data unreachable for DMA ? then use local buffer */
-			if(virt_to_bus(rpl->Skb->data) + tp->MaxPacketSize
-				> ISA_MAX_ADDRESS)
-			{
-				rpl->SkbStat = SKB_DATA_COPY;
-				rpl->FragList[0].DataAddr = htonl(virt_to_bus(tp->LocalRxBuffers[rpl->RPLIndex]));
-				rpl->MData = tp->LocalRxBuffers[rpl->RPLIndex];
-			}
-			else
-			{
-				/* DMA directly in skb->data */
-				rpl->SkbStat = SKB_DMA_DIRECT;
-				rpl->FragList[0].DataAddr = htonl(virt_to_bus(rpl->Skb->data));
-				rpl->MData = rpl->Skb->data;
-			}
-		}
-
-		rpl->FragList[0].DataCount = SWAPB(tp->MaxPacketSize);
-		rpl->FrameSize = 0;
-
-		/* Pass the last RPL back to the adapter */
-		tp->RplTail->FrameSize = 0;
-
-		/* Reset the CSTAT field in the list. */
-		sktr_write_rpl_status(tp->RplTail, RX_VALID | RX_FRAME_IRQ);
-
-		/* Current RPL becomes last one in list. */
-		tp->RplTail = tp->RplTail->NextRPLPtr;
-
-		/* Inform adapter about RPL valid. */
-		sktr_exec_sifcmd(dev, CMD_RX_VALID);
-	}
-
-	return;
-}
-
-/*
- * This function should be used whenever the status of any RPL must be
- * modified by the driver, because the compiler may otherwise change the
- * order of instructions such that writing the RPL status may be executed
- * at an undesireable time. When this function is used, the status is
- * always written when the function is called.
- */
-static void sktr_write_rpl_status(RPL *rpl, unsigned int Status)
-{
-	rpl->Status = Status;
-
-	return;
-}
-
-/*
- * The function updates the statistic counters in mac->MacStat.
- * It differtiates between directed and broadcast/multicast ( ==functional)
- * frames.
- */
-static void sktr_update_rcv_stats(struct net_local *tp, unsigned char DataPtr[],
-					unsigned int Length)
-{
-	tp->MacStat.rx_packets++;
-
-	/* Test functional bit */
-	if(DataPtr[2] & GROUP_BIT)
-		tp->MacStat.multicast++;
-
-	return;
-}
-
-/*
- * Check if it is a frame of myself. Compare source address with my current
- * address in reverse direction, and mask out the TR_RII.
- */
-static unsigned char sktr_chk_frame(struct net_device *dev, unsigned char *Addr)
-{
-	int i;
-
-	for(i = 5; i > 0; i--)
-	{
-		if(Addr[8 + i] != dev->dev_addr[i])
-			return (0);
-	}
-
-	/* Mask out RIF bit. */
-	if((Addr[8] & ~TR_RII) != (unsigned char)(dev->dev_addr[0]))
-		return (0);
-
-	return (1);  /* It is my frame. */
-}
-
-/*
- * Dump Packet (data)
- */
-static void sktr_dump(unsigned char *Data, int length)
-{
-        int i, j;
-
-        for (i = 0, j = 0; i < length / 8; i++, j += 8)
-        {
-		printk(KERN_DEBUG "%02x %02x %02x %02x %02x %02x %02x %02x\n",
-			Data[j+0],Data[j+1],Data[j+2],Data[j+3],
-                        Data[j+4],Data[j+5],Data[j+6],Data[j+7]);
-        }
-
-        return;
-}
-
-#ifdef MODULE
-
-static struct net_device* dev_sktr[SKTR_MAX_ADAPTERS];
-static int io[SKTR_MAX_ADAPTERS]	= { 0, 0 };
-static int irq[SKTR_MAX_ADAPTERS] 	= { 0, 0 };
-static int mem[SKTR_MAX_ADAPTERS] 	= { 0, 0 };
-
-MODULE_PARM(io,  "1-" __MODULE_STRING(SKTR_MAX_ADAPTERS) "i");
-MODULE_PARM(irq, "1-" __MODULE_STRING(SKTR_MAX_ADAPTERS) "i");
-MODULE_PARM(mem, "1-" __MODULE_STRING(SKTR_MAX_ADAPTERS) "i");
-
-int init_module(void)
-{
-	int i;
-
-	for(i = 0; i < SKTR_MAX_ADAPTERS; i++)
-	{
-                irq[i] = 0;
-                mem[i] = 0;
-                dev_sktr[i] = NULL;
-                dev_sktr[i] = init_trdev(dev_sktr[i], 0);
-                if(dev_sktr[i] == NULL)
-                        return (-ENOMEM);
-
-		dev_sktr[i]->base_addr = io[i];
-                dev_sktr[i]->irq       = irq[i];
-                dev_sktr[i]->mem_start = mem[i];
-                dev_sktr[i]->init      = &sktr_probe;
-
-                if(register_trdev(dev_sktr[i]) != 0)
-		{
-                        kfree_s(dev_sktr[i], sizeof(struct net_device));
-                        dev_sktr[i] = NULL;
-                        if(i == 0)
-			{
-                                printk("sktr: register_trdev() returned non-zero.\n");
-                                return (-EIO);
-                        }
-			else
-                                return (0);
-                }
-        }
-
-        return (0);
-}
-
-void cleanup_module(void)
-{
-	int i;
-
-        for(i = 0; i < SKTR_MAX_ADAPTERS; i++)
-	{
-		if(dev_sktr[i])
-		{
-			unregister_trdev(dev_sktr[i]);
-			release_region(dev_sktr[i]->base_addr, SKTR_IO_EXTENT);
-			if(dev_sktr[i]->irq)
-				free_irq(dev_sktr[i]->irq, dev_sktr[i]);
-			if(dev_sktr[i]->dma > 0)
-				free_dma(dev_sktr[i]->dma);
-			if(dev_sktr[i]->priv)
-				kfree_s(dev_sktr[i]->priv, sizeof(struct net_local));
-			kfree_s(dev_sktr[i], sizeof(struct net_device));
-			dev_sktr[i] = NULL;
-                }
-	}
-}
-#endif /* MODULE */

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