net: wan: Delete the DLCI / SDLA drivers

The DLCI driver (dlci.c) implements the Frame Relay protocol. However,
we already have another newer and better implementation of Frame Relay
provided by the HDLC_FR driver (hdlc_fr.c).

The DLCI driver's implementation of Frame Relay is used by only one
hardware driver in the kernel - the SDLA driver (sdla.c).

The SDLA driver provides Frame Relay support for the Sangoma S50x devices.
However, the vendor provides their own driver (along with their own
multi-WAN-protocol implementations including Frame Relay), called WANPIPE.
I believe most users of the hardware would use the vendor-provided WANPIPE
driver instead.

(The WANPIPE driver was even once in the kernel, but was deleted in
commit 8db60bcf3021 ("[WAN]: Remove broken and unmaintained Sangoma
drivers.") because the vendor no longer updated the in-kernel WANPIPE
driver.)

Cc: Mike McLagan <mike.mclagan@linux.org>
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Link: https://lore.kernel.org/r/20201114150921.685594-1-xie.he.0141@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 0 insertions, 1655 deletions

diff --git a/drivers/net/wan/sdla.c b/drivers/net/wan/sdla.c
deleted file mode 100644
index bc2c1c7fb1a4..000000000000
--- a/drivers/net/wan/sdla.c
+++ /dev/null
@@ -1,1655 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * SDLA		An implementation of a driver for the Sangoma S502/S508 series
- *		multi-protocol PC interface card.  Initial offering is with 
- *		the DLCI driver, providing Frame Relay support for linux.
- *
- *		Global definitions for the Frame relay interface.
- *
- * Version:	@(#)sdla.c   0.30	12 Sep 1996
- *
- * Credits:	Sangoma Technologies, for the use of 2 cards for an extended
- *			period of time.
- *		David Mandelstam <dm@sangoma.com> for getting me started on 
- *			this project, and incentive to complete it.
- *		Gene Kozen <74604.152@compuserve.com> for providing me with
- *			important information about the cards.
- *
- * Author:	Mike McLagan <mike.mclagan@linux.org>
- *
- * Changes:
- *		0.15	Mike McLagan	Improved error handling, packet dropping
- *		0.20	Mike McLagan	New transmit/receive flags for config
- *					If in FR mode, don't accept packets from
- *					non DLCI devices.
- *		0.25	Mike McLagan	Fixed problem with rejecting packets
- *					from non DLCI devices.
- *		0.30	Mike McLagan	Fixed kernel panic when used with modified
- *					ifconfig
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/kernel.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/slab.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/netdevice.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-#include <linux/if_frad.h>
-#include <linux/sdla.h>
-#include <linux/bitops.h>
-
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <linux/uaccess.h>
-
-static const char* version = "SDLA driver v0.30, 12 Sep 1996, mike.mclagan@linux.org";
-
-static unsigned int valid_port[] = { 0x250, 0x270, 0x280, 0x300, 0x350, 0x360, 0x380, 0x390};
-
-static unsigned int valid_mem[] = {
-				    0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000, 
-                                    0xB0000, 0xB2000, 0xB4000, 0xB6000, 0xB8000, 0xBA000, 0xBC000, 0xBE000,
-                                    0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000,
-                                    0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000, 0xDE000,
-                                    0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000}; 
-
-static DEFINE_SPINLOCK(sdla_lock);
-
-/*********************************************************
- *
- * these are the core routines that access the card itself 
- *
- *********************************************************/
-
-#define SDLA_WINDOW(dev,addr) outb((((addr) >> 13) & 0x1F), (dev)->base_addr + SDLA_REG_Z80_WINDOW)
-
-static void __sdla_read(struct net_device *dev, int addr, void *buf, short len)
-{
-	char          *temp;
-	const void    *base;
-	int           offset, bytes;
-
-	temp = buf;
-	while(len)
-	{	
-		offset = addr & SDLA_ADDR_MASK;
-		bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
-		base = (const void *) (dev->mem_start + offset);
-
-		SDLA_WINDOW(dev, addr);
-		memcpy(temp, base, bytes);
-
-		addr += bytes;
-		temp += bytes;
-		len  -= bytes;
-	}  
-}
-
-static void sdla_read(struct net_device *dev, int addr, void *buf, short len)
-{
-	unsigned long flags;
-	spin_lock_irqsave(&sdla_lock, flags);
-	__sdla_read(dev, addr, buf, len);
-	spin_unlock_irqrestore(&sdla_lock, flags);
-}
-
-static void __sdla_write(struct net_device *dev, int addr, 
-			 const void *buf, short len)
-{
-	const char    *temp;
-	void 	      *base;
-	int           offset, bytes;
-
-	temp = buf;
-	while(len)
-	{
-		offset = addr & SDLA_ADDR_MASK;
-		bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
-		base = (void *) (dev->mem_start + offset);
-
-		SDLA_WINDOW(dev, addr);
-		memcpy(base, temp, bytes);
-
-		addr += bytes;
-		temp += bytes;
-		len  -= bytes;
-	}
-}
-
-static void sdla_write(struct net_device *dev, int addr, 
-		       const void *buf, short len)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&sdla_lock, flags);
-	__sdla_write(dev, addr, buf, len);
-	spin_unlock_irqrestore(&sdla_lock, flags);
-}
-
-
-static void sdla_clear(struct net_device *dev)
-{
-	unsigned long flags;
-	char          *base;
-	int           len, addr, bytes;
-
-	len = 65536;	
-	addr = 0;
-	bytes = SDLA_WINDOW_SIZE;
-	base = (void *) dev->mem_start;
-
-	spin_lock_irqsave(&sdla_lock, flags);
-	while(len)
-	{
-		SDLA_WINDOW(dev, addr);
-		memset(base, 0, bytes);
-
-		addr += bytes;
-		len  -= bytes;
-	}
-	spin_unlock_irqrestore(&sdla_lock, flags);
-
-}
-
-static char sdla_byte(struct net_device *dev, int addr)
-{
-	unsigned long flags;
-	char          byte, *temp;
-
-	temp = (void *) (dev->mem_start + (addr & SDLA_ADDR_MASK));
-
-	spin_lock_irqsave(&sdla_lock, flags);
-	SDLA_WINDOW(dev, addr);
-	byte = *temp;
-	spin_unlock_irqrestore(&sdla_lock, flags);
-
-	return byte;
-}
-
-static void sdla_stop(struct net_device *dev)
-{
-	struct frad_local *flp;
-
-	flp = netdev_priv(dev);
-	switch(flp->type)
-	{
-		case SDLA_S502A:
-			outb(SDLA_S502A_HALT, dev->base_addr + SDLA_REG_CONTROL);
-			flp->state = SDLA_HALT;
-			break;
-		case SDLA_S502E:
-			outb(SDLA_HALT, dev->base_addr + SDLA_REG_Z80_CONTROL);
-			outb(SDLA_S502E_ENABLE, dev->base_addr + SDLA_REG_CONTROL);
-			flp->state = SDLA_S502E_ENABLE;
-			break;
-		case SDLA_S507:
-			flp->state &= ~SDLA_CPUEN;
-			outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
-			break;
-		case SDLA_S508:
-			flp->state &= ~SDLA_CPUEN;
-			outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
-			break;
-	}
-}
-
-static void sdla_start(struct net_device *dev)
-{
-	struct frad_local *flp;
-
-	flp = netdev_priv(dev);
-	switch(flp->type)
-	{
-		case SDLA_S502A:
-			outb(SDLA_S502A_NMI, dev->base_addr + SDLA_REG_CONTROL);
-			outb(SDLA_S502A_START, dev->base_addr + SDLA_REG_CONTROL);
-			flp->state = SDLA_S502A_START;
-			break;
-		case SDLA_S502E:
-			outb(SDLA_S502E_CPUEN, dev->base_addr + SDLA_REG_Z80_CONTROL);
-			outb(0x00, dev->base_addr + SDLA_REG_CONTROL);
-			flp->state = 0;
-			break;
-		case SDLA_S507:
-			flp->state |= SDLA_CPUEN;
-			outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
-			break;
-		case SDLA_S508:
-			flp->state |= SDLA_CPUEN;
-			outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
-			break;
-	}
-}
-
-/****************************************************
- *
- * this is used for the S502A/E cards to determine
- * the speed of the onboard CPU.  Calibration is
- * necessary for the Frame Relay code uploaded 
- * later.  Incorrect results cause timing problems
- * with link checks & status messages
- *
- ***************************************************/
-
-static int sdla_z80_poll(struct net_device *dev, int z80_addr, int jiffs, char resp1, char resp2)
-{
-	unsigned long start, done, now;
-	char          resp, *temp;
-
-	start = now = jiffies;
-	done = jiffies + jiffs;
-
-	temp = (void *)dev->mem_start;
-	temp += z80_addr & SDLA_ADDR_MASK;
-	
-	resp = ~resp1;
-	while (time_before(jiffies, done) && (resp != resp1) && (!resp2 || (resp != resp2)))
-	{
-		if (jiffies != now)
-		{
-			SDLA_WINDOW(dev, z80_addr);
-			now = jiffies;
-			resp = *temp;
-		}
-	}
-	return time_before(jiffies, done) ? jiffies - start : -1;
-}
-
-/* constants for Z80 CPU speed */
-#define Z80_READY 		'1'	/* Z80 is ready to begin */
-#define LOADER_READY 		'2'	/* driver is ready to begin */
-#define Z80_SCC_OK 		'3'	/* SCC is on board */
-#define Z80_SCC_BAD	 	'4'	/* SCC was not found */
-
-static int sdla_cpuspeed(struct net_device *dev, struct ifreq *ifr)
-{
-	int  jiffs;
-	char data;
-
-	sdla_start(dev);
-	if (sdla_z80_poll(dev, 0, 3*HZ, Z80_READY, 0) < 0)
-		return -EIO;
-
-	data = LOADER_READY;
-	sdla_write(dev, 0, &data, 1);
-
-	if ((jiffs = sdla_z80_poll(dev, 0, 8*HZ, Z80_SCC_OK, Z80_SCC_BAD)) < 0)
-		return -EIO;
-
-	sdla_stop(dev);
-	sdla_read(dev, 0, &data, 1);
-
-	if (data == Z80_SCC_BAD)
-	{
-		printk("%s: SCC bad\n", dev->name);
-		return -EIO;
-	}
-
-	if (data != Z80_SCC_OK)
-		return -EINVAL;
-
-	if (jiffs < 165)
-		ifr->ifr_mtu = SDLA_CPU_16M;
-	else if (jiffs < 220)
-		ifr->ifr_mtu = SDLA_CPU_10M;
-	else if (jiffs < 258)
-		ifr->ifr_mtu = SDLA_CPU_8M;
-	else if (jiffs < 357)
-		ifr->ifr_mtu = SDLA_CPU_7M;
-	else if (jiffs < 467)
-		ifr->ifr_mtu = SDLA_CPU_5M;
-	else
-		ifr->ifr_mtu = SDLA_CPU_3M;
- 
-	return 0;
-}
-
-/************************************************
- *
- *  Direct interaction with the Frame Relay code 
- *  starts here.
- *
- ************************************************/
-
-struct _dlci_stat 
-{
-	short dlci;
-	char  flags;
-} __packed;
-
-struct _frad_stat 
-{
-	char    flags;
-	struct _dlci_stat dlcis[SDLA_MAX_DLCI];
-};
-
-static void sdla_errors(struct net_device *dev, int cmd, int dlci, int ret, int len, void *data) 
-{
-	struct _dlci_stat *pstatus;
-	short             *pdlci;
-	int               i;
-	char              *state, line[30];
-
-	switch (ret)
-	{
-		case SDLA_RET_MODEM:
-			state = data;
-			if (*state & SDLA_MODEM_DCD_LOW)
-				netdev_info(dev, "Modem DCD unexpectedly low!\n");
-			if (*state & SDLA_MODEM_CTS_LOW)
-				netdev_info(dev, "Modem CTS unexpectedly low!\n");
-			/* I should probably do something about this! */
-			break;
-
-		case SDLA_RET_CHANNEL_OFF:
-			netdev_info(dev, "Channel became inoperative!\n");
-			/* same here */
-			break;
-
-		case SDLA_RET_CHANNEL_ON:
-			netdev_info(dev, "Channel became operative!\n");
-			/* same here */
-			break;
-
-		case SDLA_RET_DLCI_STATUS:
-			netdev_info(dev, "Status change reported by Access Node\n");
-			len /= sizeof(struct _dlci_stat);
-			for(pstatus = data, i=0;i < len;i++,pstatus++)
-			{
-				if (pstatus->flags & SDLA_DLCI_NEW)
-					state = "new";
-				else if (pstatus->flags & SDLA_DLCI_DELETED)
-					state = "deleted";
-				else if (pstatus->flags & SDLA_DLCI_ACTIVE)
-					state = "active";
-				else
-				{
-					sprintf(line, "unknown status: %02X", pstatus->flags);
-					state = line;
-				}
-				netdev_info(dev, "DLCI %i: %s\n",
-					    pstatus->dlci, state);
-				/* same here */
-			}
-			break;
-
-		case SDLA_RET_DLCI_UNKNOWN:
-			netdev_info(dev, "Received unknown DLCIs:");
-			len /= sizeof(short);
-			for(pdlci = data,i=0;i < len;i++,pdlci++)
-				pr_cont(" %i", *pdlci);
-			pr_cont("\n");
-			break;
-
-		case SDLA_RET_TIMEOUT:
-			netdev_err(dev, "Command timed out!\n");
-			break;
-
-		case SDLA_RET_BUF_OVERSIZE:
-			netdev_info(dev, "Bc/CIR overflow, acceptable size is %i\n",
-				    len);
-			break;
-
-		case SDLA_RET_BUF_TOO_BIG:
-			netdev_info(dev, "Buffer size over specified max of %i\n",
-				    len);
-			break;
-
-		case SDLA_RET_CHANNEL_INACTIVE:
-		case SDLA_RET_DLCI_INACTIVE:
-		case SDLA_RET_CIR_OVERFLOW:
-		case SDLA_RET_NO_BUFS:
-			if (cmd == SDLA_INFORMATION_WRITE)
-				break;
-			fallthrough;
-
-		default: 
-			netdev_dbg(dev, "Cmd 0x%02X generated return code 0x%02X\n",
-				   cmd, ret);
-			/* Further processing could be done here */
-			break;
-	}
-}
-
-static int sdla_cmd(struct net_device *dev, int cmd, short dlci, short flags, 
-                        void *inbuf, short inlen, void *outbuf, short *outlen)
-{
-	static struct _frad_stat status;
-	struct frad_local        *flp;
-	struct sdla_cmd          *cmd_buf;
-	unsigned long            pflags;
-	unsigned long		 jiffs;
-	int                      ret, waiting, len;
-	long                     window;
-
-	flp = netdev_priv(dev);
-	window = flp->type == SDLA_S508 ? SDLA_508_CMD_BUF : SDLA_502_CMD_BUF;
-	cmd_buf = (struct sdla_cmd *)(dev->mem_start + (window & SDLA_ADDR_MASK));
-	ret = 0;
-	len = 0;
-	jiffs = jiffies + HZ;  /* 1 second is plenty */
-
-	spin_lock_irqsave(&sdla_lock, pflags);
-	SDLA_WINDOW(dev, window);
-	cmd_buf->cmd = cmd;
-	cmd_buf->dlci = dlci;
-	cmd_buf->flags = flags;
-
-	if (inbuf)
-		memcpy(cmd_buf->data, inbuf, inlen);
-
-	cmd_buf->length = inlen;
-
-	cmd_buf->opp_flag = 1;
-	spin_unlock_irqrestore(&sdla_lock, pflags);
-
-	waiting = 1;
-	len = 0;
-	while (waiting && time_before_eq(jiffies, jiffs))
-	{
-		if (waiting++ % 3) 
-		{
-			spin_lock_irqsave(&sdla_lock, pflags);
-			SDLA_WINDOW(dev, window);
-			waiting = ((volatile int)(cmd_buf->opp_flag));
-			spin_unlock_irqrestore(&sdla_lock, pflags);
-		}
-	}
-	
-	if (!waiting)
-	{
-
-		spin_lock_irqsave(&sdla_lock, pflags);
-		SDLA_WINDOW(dev, window);
-		ret = cmd_buf->retval;
-		len = cmd_buf->length;
-		if (outbuf && outlen)
-		{
-			*outlen = *outlen >= len ? len : *outlen;
-
-			if (*outlen)
-				memcpy(outbuf, cmd_buf->data, *outlen);
-		}
-
-		/* This is a local copy that's used for error handling */
-		if (ret)
-			memcpy(&status, cmd_buf->data, len > sizeof(status) ? sizeof(status) : len);
-
-		spin_unlock_irqrestore(&sdla_lock, pflags);
-	}
-	else
-		ret = SDLA_RET_TIMEOUT;
-
-	if (ret != SDLA_RET_OK)
-	   	sdla_errors(dev, cmd, dlci, ret, len, &status);
-
-	return ret;
-}
-
-/***********************************************
- *
- * these functions are called by the DLCI driver 
- *
- ***********************************************/
-
-static int sdla_reconfig(struct net_device *dev);
-
-static int sdla_activate(struct net_device *slave, struct net_device *master)
-{
-	struct frad_local *flp;
-	int i;
-
-	flp = netdev_priv(slave);
-
-	for(i=0;i<CONFIG_DLCI_MAX;i++)
-		if (flp->master[i] == master)
-			break;
-
-	if (i == CONFIG_DLCI_MAX)
-		return -ENODEV;
-
-	flp->dlci[i] = abs(flp->dlci[i]);
-
-	if (netif_running(slave) && (flp->config.station == FRAD_STATION_NODE))
-		sdla_cmd(slave, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL);
-
-	return 0;
-}
-
-static int sdla_deactivate(struct net_device *slave, struct net_device *master)
-{
-	struct frad_local *flp;
-	int               i;
-
-	flp = netdev_priv(slave);
-
-	for(i=0;i<CONFIG_DLCI_MAX;i++)
-		if (flp->master[i] == master)
-			break;
-
-	if (i == CONFIG_DLCI_MAX)
-		return -ENODEV;
-
-	flp->dlci[i] = -abs(flp->dlci[i]);
-
-	if (netif_running(slave) && (flp->config.station == FRAD_STATION_NODE))
-		sdla_cmd(slave, SDLA_DEACTIVATE_DLCI, 0, 0, &flp->dlci[i], sizeof(short), NULL, NULL);
-
-	return 0;
-}
-
-static int sdla_assoc(struct net_device *slave, struct net_device *master)
-{
-	struct frad_local *flp;
-	int               i;
-
-	if (master->type != ARPHRD_DLCI)
-		return -EINVAL;
-
-	flp = netdev_priv(slave);
-
-	for(i=0;i<CONFIG_DLCI_MAX;i++)
-	{
-		if (!flp->master[i])
-			break;
-		if (abs(flp->dlci[i]) == *(short *)(master->dev_addr))
-			return -EADDRINUSE;
-	} 
-
-	if (i == CONFIG_DLCI_MAX)
-		return -EMLINK;  /* #### Alan: Comments on this ?? */
-
-
-	flp->master[i] = master;
-	flp->dlci[i] = -*(short *)(master->dev_addr);
-	master->mtu = slave->mtu;
-
-	if (netif_running(slave)) {
-		if (flp->config.station == FRAD_STATION_CPE)
-			sdla_reconfig(slave);
-		else
-			sdla_cmd(slave, SDLA_ADD_DLCI, 0, 0, master->dev_addr, sizeof(short), NULL, NULL);
-	}
-
-	return 0;
-}
-
-static int sdla_deassoc(struct net_device *slave, struct net_device *master)
-{
-	struct frad_local *flp;
-	int               i;
-
-	flp = netdev_priv(slave);
-
-	for(i=0;i<CONFIG_DLCI_MAX;i++)
-		if (flp->master[i] == master)
-			break;
-
-	if (i == CONFIG_DLCI_MAX)
-		return -ENODEV;
-
-	flp->master[i] = NULL;
-	flp->dlci[i] = 0;
-
-
-	if (netif_running(slave)) {
-		if (flp->config.station == FRAD_STATION_CPE)
-			sdla_reconfig(slave);
-		else
-			sdla_cmd(slave, SDLA_DELETE_DLCI, 0, 0, master->dev_addr, sizeof(short), NULL, NULL);
-	}
-
-	return 0;
-}
-
-static int sdla_dlci_conf(struct net_device *slave, struct net_device *master, int get)
-{
-	struct frad_local *flp;
-	struct dlci_local *dlp;
-	int               i;
-	short             len, ret;
-
-	flp = netdev_priv(slave);
-
-	for(i=0;i<CONFIG_DLCI_MAX;i++)
-		if (flp->master[i] == master)
-			break;
-
-	if (i == CONFIG_DLCI_MAX)
-		return -ENODEV;
-
-	dlp = netdev_priv(master);
-
-	ret = SDLA_RET_OK;
-	len = sizeof(struct dlci_conf);
-	if (netif_running(slave)) {
-		if (get)
-			ret = sdla_cmd(slave, SDLA_READ_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0,  
-			            NULL, 0, &dlp->config, &len);
-		else
-			ret = sdla_cmd(slave, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0,  
-			            &dlp->config, sizeof(struct dlci_conf) - 4 * sizeof(short), NULL, NULL);
-	}
-
-	return ret == SDLA_RET_OK ? 0 : -EIO;
-}
-
-/**************************
- *
- * now for the Linux driver 
- *
- **************************/
-
-/* NOTE: the DLCI driver deals with freeing the SKB!! */
-static netdev_tx_t sdla_transmit(struct sk_buff *skb,
-				 struct net_device *dev)
-{
-	struct frad_local *flp;
-	int               ret, addr, accept, i;
-	short             size;
-	unsigned long     flags;
-	struct buf_entry  *pbuf;
-
-	flp = netdev_priv(dev);
-	ret = 0;
-	accept = 1;
-
-	netif_stop_queue(dev);
-
-	/*
-	 * stupid GateD insists on setting up the multicast router thru us
-	 * and we're ill equipped to handle a non Frame Relay packet at this
-	 * time!
-	 */
-
-	accept = 1;
-	switch (dev->type)
-	{
-		case ARPHRD_FRAD:
-			if (skb->dev->type != ARPHRD_DLCI)
-			{
-				netdev_warn(dev, "Non DLCI device, type %i, tried to send on FRAD module\n",
-					    skb->dev->type);
-				accept = 0;
-			}
-			break;
-		default:
-			netdev_warn(dev, "unknown firmware type 0x%04X\n",
-				    dev->type);
-			accept = 0;
-			break;
-	}
-	if (accept)
-	{
-		/* this is frame specific, but till there's a PPP module, it's the default */
-		switch (flp->type)
-		{
-			case SDLA_S502A:
-			case SDLA_S502E:
-				ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, skb->data, skb->len, NULL, NULL);
-				break;
-				case SDLA_S508:
-				size = sizeof(addr);
-				ret = sdla_cmd(dev, SDLA_INFORMATION_WRITE, *(short *)(skb->dev->dev_addr), 0, NULL, skb->len, &addr, &size);
-				if (ret == SDLA_RET_OK)
-				{
-
-					spin_lock_irqsave(&sdla_lock, flags);
-					SDLA_WINDOW(dev, addr);
-					pbuf = (void *)(dev->mem_start + (addr & SDLA_ADDR_MASK));
-					__sdla_write(dev, pbuf->buf_addr, skb->data, skb->len);
-					SDLA_WINDOW(dev, addr);
-					pbuf->opp_flag = 1;
-					spin_unlock_irqrestore(&sdla_lock, flags);
-				}
-				break;
-		}
-
-		switch (ret)
-		{
-			case SDLA_RET_OK:
-				dev->stats.tx_packets++;
-				break;
-
-			case SDLA_RET_CIR_OVERFLOW:
-			case SDLA_RET_BUF_OVERSIZE:
-			case SDLA_RET_NO_BUFS:
-				dev->stats.tx_dropped++;
-				break;
-
-			default:
-				dev->stats.tx_errors++;
-				break;
-		}
-	}
-	netif_wake_queue(dev);
-	for(i=0;i<CONFIG_DLCI_MAX;i++)
-	{
-		if(flp->master[i]!=NULL)
-			netif_wake_queue(flp->master[i]);
-	}		
-
-	dev_kfree_skb(skb);
-	return NETDEV_TX_OK;
-}
-
-static void sdla_receive(struct net_device *dev)
-{
-	struct net_device	  *master;
-	struct frad_local *flp;
-	struct dlci_local *dlp;
-	struct sk_buff	 *skb;
-
-	struct sdla_cmd	*cmd;
-	struct buf_info	*pbufi;
-	struct buf_entry  *pbuf;
-
-	unsigned long	  flags;
-	int               i=0, received, success, addr, buf_base, buf_top;
-	short             dlci, len, len2, split;
-
-	flp = netdev_priv(dev);
-	success = 1;
-	received = addr = buf_top = buf_base = 0;
-	len = dlci = 0;
-	skb = NULL;
-	master = NULL;
-	cmd = NULL;
-	pbufi = NULL;
-	pbuf = NULL;
-
-	spin_lock_irqsave(&sdla_lock, flags);
-
-	switch (flp->type)
-	{
-		case SDLA_S502A:
-		case SDLA_S502E:
-			cmd = (void *) (dev->mem_start + (SDLA_502_RCV_BUF & SDLA_ADDR_MASK));
-			SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
-			success = cmd->opp_flag;
-			if (!success)
-				break;
-
-			dlci = cmd->dlci;
-			len = cmd->length;
-			break;
-
-		case SDLA_S508:
-			pbufi = (void *) (dev->mem_start + (SDLA_508_RXBUF_INFO & SDLA_ADDR_MASK));
-			SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
-			pbuf = (void *) (dev->mem_start + ((pbufi->rse_base + flp->buffer * sizeof(struct buf_entry)) & SDLA_ADDR_MASK));
-			success = pbuf->opp_flag;
-			if (!success)
-				break;
-
-			buf_top = pbufi->buf_top;
-			buf_base = pbufi->buf_base;
-			dlci = pbuf->dlci;
-			len = pbuf->length;
-			addr = pbuf->buf_addr;
-			break;
-	}
-
-	/* common code, find the DLCI and get the SKB */
-	if (success)
-	{
-		for (i=0;i<CONFIG_DLCI_MAX;i++)
-			if (flp->dlci[i] == dlci)
-				break;
-
-		if (i == CONFIG_DLCI_MAX)
-		{
-			netdev_notice(dev, "Received packet from invalid DLCI %i, ignoring\n",
-				      dlci);
-			dev->stats.rx_errors++;
-			success = 0;
-		}
-	}
-
-	if (success)
-	{
-		master = flp->master[i];
-		skb = dev_alloc_skb(len + sizeof(struct frhdr));
-		if (skb == NULL) 
-		{
-			netdev_notice(dev, "Memory squeeze, dropping packet\n");
-			dev->stats.rx_dropped++;
-			success = 0;
-		}
-		else
-			skb_reserve(skb, sizeof(struct frhdr));
-	}
-
-	/* pick up the data */
-	switch (flp->type)
-	{
-		case SDLA_S502A:
-		case SDLA_S502E:
-			if (success)
-				__sdla_read(dev, SDLA_502_RCV_BUF + SDLA_502_DATA_OFS, skb_put(skb,len), len);
-
-			SDLA_WINDOW(dev, SDLA_502_RCV_BUF);
-			cmd->opp_flag = 0;
-			break;
-
-		case SDLA_S508:
-			if (success)
-			{
-				/* is this buffer split off the end of the internal ring buffer */
-				split = addr + len > buf_top + 1 ? len - (buf_top - addr + 1) : 0;
-				len2 = len - split;
-
-				__sdla_read(dev, addr, skb_put(skb, len2), len2);
-				if (split)
-					__sdla_read(dev, buf_base, skb_put(skb, split), split);
-			}
-
-			/* increment the buffer we're looking at */
-			SDLA_WINDOW(dev, SDLA_508_RXBUF_INFO);
-			flp->buffer = (flp->buffer + 1) % pbufi->rse_num;
-			pbuf->opp_flag = 0;
-			break;
-	}
-
-	if (success)
-	{
-		dev->stats.rx_packets++;
-		dlp = netdev_priv(master);
-		(*dlp->receive)(skb, master);
-	}
-
-	spin_unlock_irqrestore(&sdla_lock, flags);
-}
-
-static irqreturn_t sdla_isr(int dummy, void *dev_id)
-{
-	struct net_device     *dev;
-	struct frad_local *flp;
-	char              byte;
-
-	dev = dev_id;
-
-	flp = netdev_priv(dev);
-
-	if (!flp->initialized)
-	{
-		netdev_warn(dev, "irq %d for uninitialized device\n", dev->irq);
-		return IRQ_NONE;
-	}
-
-	byte = sdla_byte(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE);
-	switch (byte)
-	{
-		case SDLA_INTR_RX:
-			sdla_receive(dev);
-			break;
-
-		/* the command will get an error return, which is processed above */
-		case SDLA_INTR_MODEM:
-		case SDLA_INTR_STATUS:
-			sdla_cmd(dev, SDLA_READ_DLC_STATUS, 0, 0, NULL, 0, NULL, NULL);
-			break;
-
-		case SDLA_INTR_TX:
-		case SDLA_INTR_COMPLETE:
-		case SDLA_INTR_TIMER:
-			netdev_warn(dev, "invalid irq flag 0x%02X\n", byte);
-			break;
-	}
-
-	/* the S502E requires a manual acknowledgement of the interrupt */ 
-	if (flp->type == SDLA_S502E)
-	{
-		flp->state &= ~SDLA_S502E_INTACK;
-		outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
-		flp->state |= SDLA_S502E_INTACK;
-		outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
-	}
-
-	/* this clears the byte, informing the Z80 we're done */
-	byte = 0;
-	sdla_write(dev, flp->type == SDLA_S508 ? SDLA_508_IRQ_INTERFACE : SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
-	return IRQ_HANDLED;
-}
-
-static void sdla_poll(struct timer_list *t)
-{
-	struct frad_local *flp = from_timer(flp, t, timer);
-	struct net_device *dev = flp->dev;
-
-	if (sdla_byte(dev, SDLA_502_RCV_BUF))
-		sdla_receive(dev);
-
-	flp->timer.expires = 1;
-	add_timer(&flp->timer);
-}
-
-static int sdla_close(struct net_device *dev)
-{
-	struct frad_local *flp;
-	struct intr_info  intr;
-	int               len, i;
-	short             dlcis[CONFIG_DLCI_MAX];
-
-	flp = netdev_priv(dev);
-
-	len = 0;
-	for(i=0;i<CONFIG_DLCI_MAX;i++)
-		if (flp->dlci[i])
-			dlcis[len++] = abs(flp->dlci[i]);
-	len *= 2;
-
-	if (flp->config.station == FRAD_STATION_NODE)
-	{
-		for(i=0;i<CONFIG_DLCI_MAX;i++)
-			if (flp->dlci[i] > 0) 
-				sdla_cmd(dev, SDLA_DEACTIVATE_DLCI, 0, 0, dlcis, len, NULL, NULL);
-		sdla_cmd(dev, SDLA_DELETE_DLCI, 0, 0, &flp->dlci[i], sizeof(flp->dlci[i]), NULL, NULL);
-	}
-
-	memset(&intr, 0, sizeof(intr));
-	/* let's start up the reception */
-	switch(flp->type)
-	{
-		case SDLA_S502A:
-			del_timer(&flp->timer); 
-			break;
-
-		case SDLA_S502E:
-			sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
-			flp->state &= ~SDLA_S502E_INTACK;
-			outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
-			break;
-
-		case SDLA_S507:
-			break;
-
-		case SDLA_S508:
-			sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
-			flp->state &= ~SDLA_S508_INTEN;
-			outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
-			break;
-	}
-
-	sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
-
-	netif_stop_queue(dev);
-	
-	return 0;
-}
-
-struct conf_data {
-	struct frad_conf config;
-	short            dlci[CONFIG_DLCI_MAX];
-};
-
-static int sdla_open(struct net_device *dev)
-{
-	struct frad_local *flp;
-	struct dlci_local *dlp;
-	struct conf_data  data;
-	struct intr_info  intr;
-	int               len, i;
-	char              byte;
-
-	flp = netdev_priv(dev);
-
-	if (!flp->initialized)
-		return -EPERM;
-
-	if (!flp->configured)
-		return -EPERM;
-
-	/* time to send in the configuration */
-	len = 0;
-	for(i=0;i<CONFIG_DLCI_MAX;i++)
-		if (flp->dlci[i])
-			data.dlci[len++] = abs(flp->dlci[i]);
-	len *= 2;
-
-	memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
-	len += sizeof(struct frad_conf);
-
-	sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
-	sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
-
-	if (flp->type == SDLA_S508)
-		flp->buffer = 0;
-
-	sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
-
-	/* let's start up the reception */
-	memset(&intr, 0, sizeof(intr));
-	switch(flp->type)
-	{
-		case SDLA_S502A:
-			flp->timer.expires = 1;
-			add_timer(&flp->timer);
-			break;
-
-		case SDLA_S502E:
-			flp->state |= SDLA_S502E_ENABLE;
-			outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
-			flp->state |= SDLA_S502E_INTACK;
-			outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
-			byte = 0;
-			sdla_write(dev, SDLA_502_IRQ_INTERFACE, &byte, sizeof(byte));
-			intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
-			sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(char) + sizeof(short), NULL, NULL);
-			break;
-
-		case SDLA_S507:
-			break;
-
-		case SDLA_S508:
-			flp->state |= SDLA_S508_INTEN;
-			outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
-			byte = 0;
-			sdla_write(dev, SDLA_508_IRQ_INTERFACE, &byte, sizeof(byte));
-			intr.flags = SDLA_INTR_RX | SDLA_INTR_STATUS | SDLA_INTR_MODEM;
-			intr.irq = dev->irq;
-			sdla_cmd(dev, SDLA_SET_IRQ_TRIGGER, 0, 0, &intr, sizeof(struct intr_info), NULL, NULL);
-			break;
-	}
-
-	if (flp->config.station == FRAD_STATION_CPE)
-	{
-		byte = SDLA_ICS_STATUS_ENQ;
-		sdla_cmd(dev, SDLA_ISSUE_IN_CHANNEL_SIGNAL, 0, 0, &byte, sizeof(byte), NULL, NULL);
-	}
-	else
-	{
-		sdla_cmd(dev, SDLA_ADD_DLCI, 0, 0, data.dlci, len - sizeof(struct frad_conf), NULL, NULL);
-		for(i=0;i<CONFIG_DLCI_MAX;i++)
-			if (flp->dlci[i] > 0)
-				sdla_cmd(dev, SDLA_ACTIVATE_DLCI, 0, 0, &flp->dlci[i], 2*sizeof(flp->dlci[i]), NULL, NULL);
-	}
-
-	/* configure any specific DLCI settings */
-	for(i=0;i<CONFIG_DLCI_MAX;i++)
-		if (flp->dlci[i])
-		{
-			dlp = netdev_priv(flp->master[i]);
-			if (dlp->configured)
-				sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, abs(flp->dlci[i]), 0, &dlp->config, sizeof(struct dlci_conf), NULL, NULL);
-		}
-
-	netif_start_queue(dev);
-	
-	return 0;
-}
-
-static int sdla_config(struct net_device *dev, struct frad_conf __user *conf, int get)
-{
-	struct frad_local *flp;
-	struct conf_data  data;
-	int               i;
-	short             size;
-
-	if (dev->type == 0xFFFF)
-		return -EUNATCH;
-
-	flp = netdev_priv(dev);
-
-	if (!get)
-	{
-		if (netif_running(dev))
-			return -EBUSY;
-
-		if(copy_from_user(&data.config, conf, sizeof(struct frad_conf)))
-			return -EFAULT;
-
-		if (data.config.station & ~FRAD_STATION_NODE)
-			return -EINVAL;
-
-		if (data.config.flags & ~FRAD_VALID_FLAGS)
-			return -EINVAL;
-
-		if ((data.config.kbaud < 0) || 
-			 ((data.config.kbaud > 128) && (flp->type != SDLA_S508)))
-			return -EINVAL;
-
-		if (data.config.clocking & ~(FRAD_CLOCK_INT | SDLA_S508_PORT_RS232))
-			return -EINVAL;
-
-		if ((data.config.mtu < 0) || (data.config.mtu > SDLA_MAX_MTU))
-			return -EINVAL;
-
-		if ((data.config.T391 < 5) || (data.config.T391 > 30))
-			return -EINVAL;
-
-		if ((data.config.T392 < 5) || (data.config.T392 > 30))
-			return -EINVAL;
-
-		if ((data.config.N391 < 1) || (data.config.N391 > 255))
-			return -EINVAL;
-
-		if ((data.config.N392 < 1) || (data.config.N392 > 10))
-			return -EINVAL;
-
-		if ((data.config.N393 < 1) || (data.config.N393 > 10))
-			return -EINVAL;
-
-		memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
-		flp->config.flags |= SDLA_DIRECT_RECV;
-
-		if (flp->type == SDLA_S508)
-			flp->config.flags |= SDLA_TX70_RX30;
-
-		if (dev->mtu != flp->config.mtu)
-		{
-			/* this is required to change the MTU */
-			dev->mtu = flp->config.mtu;
-			for(i=0;i<CONFIG_DLCI_MAX;i++)
-				if (flp->master[i])
-					flp->master[i]->mtu = flp->config.mtu;
-		}
-
-		flp->config.mtu += sizeof(struct frhdr);
-
-		/* off to the races! */
-		if (!flp->configured)
-			sdla_start(dev);
-
-		flp->configured = 1;
-	}
-	else
-	{
-		/* no sense reading if the CPU isn't started */
-		if (netif_running(dev))
-		{
-			size = sizeof(data);
-			if (sdla_cmd(dev, SDLA_READ_DLCI_CONFIGURATION, 0, 0, NULL, 0, &data, &size) != SDLA_RET_OK)
-				return -EIO;
-		}
-		else
-			if (flp->configured)
-				memcpy(&data.config, &flp->config, sizeof(struct frad_conf));
-			else
-				memset(&data.config, 0, sizeof(struct frad_conf));
-
-		memcpy(&flp->config, &data.config, sizeof(struct frad_conf));
-		data.config.flags &= FRAD_VALID_FLAGS;
-		data.config.mtu -= data.config.mtu > sizeof(struct frhdr) ? sizeof(struct frhdr) : data.config.mtu;
-		return copy_to_user(conf, &data.config, sizeof(struct frad_conf))?-EFAULT:0;
-	}
-
-	return 0;
-}
-
-static int sdla_xfer(struct net_device *dev, struct sdla_mem __user *info, int read)
-{
-	struct sdla_mem mem;
-	char	*temp;
-
-	if(copy_from_user(&mem, info, sizeof(mem)))
-		return -EFAULT;
-		
-	if (read)
-	{	
-		temp = kzalloc(mem.len, GFP_KERNEL);
-		if (!temp)
-			return -ENOMEM;
-		sdla_read(dev, mem.addr, temp, mem.len);
-		if(copy_to_user(mem.data, temp, mem.len))
-		{
-			kfree(temp);
-			return -EFAULT;
-		}
-		kfree(temp);
-	}
-	else
-	{
-		temp = memdup_user(mem.data, mem.len);
-		if (IS_ERR(temp))
-			return PTR_ERR(temp);
-		sdla_write(dev, mem.addr, temp, mem.len);
-		kfree(temp);
-	}
-	return 0;
-}
-
-static int sdla_reconfig(struct net_device *dev)
-{
-	struct frad_local *flp;
-	struct conf_data  data;
-	int               i, len;
-
-	flp = netdev_priv(dev);
-
-	len = 0;
-	for(i=0;i<CONFIG_DLCI_MAX;i++)
-		if (flp->dlci[i])
-			data.dlci[len++] = flp->dlci[i];
-	len *= 2;
-
-	memcpy(&data, &flp->config, sizeof(struct frad_conf));
-	len += sizeof(struct frad_conf);
-
-	sdla_cmd(dev, SDLA_DISABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
-	sdla_cmd(dev, SDLA_SET_DLCI_CONFIGURATION, 0, 0, &data, len, NULL, NULL);
-	sdla_cmd(dev, SDLA_ENABLE_COMMUNICATIONS, 0, 0, NULL, 0, NULL, NULL);
-
-	return 0;
-}
-
-static int sdla_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
-{
-	struct frad_local *flp;
-
-	if(!capable(CAP_NET_ADMIN))
-		return -EPERM;
-		
-	flp = netdev_priv(dev);
-
-	if (!flp->initialized)
-		return -EINVAL;
-
-	switch (cmd)
-	{
-		case FRAD_GET_CONF:
-		case FRAD_SET_CONF:
-			return sdla_config(dev, ifr->ifr_data, cmd == FRAD_GET_CONF);
-
-		case SDLA_IDENTIFY:
-			ifr->ifr_flags = flp->type;
-			break;
-
-		case SDLA_CPUSPEED:
-			return sdla_cpuspeed(dev, ifr);
-
-/* ==========================================================
-NOTE:  This is rather a useless action right now, as the
-       current driver does not support protocols other than
-       FR.  However, Sangoma has modules for a number of
-       other protocols in the works.
-============================================================*/
-		case SDLA_PROTOCOL:
-			if (flp->configured)
-				return -EALREADY;
-
-			switch (ifr->ifr_flags)
-			{
-				case ARPHRD_FRAD:
-					dev->type = ifr->ifr_flags;
-					break;
-				default:
-					return -ENOPROTOOPT;
-			}
-			break;
-
-		case SDLA_CLEARMEM:
-			sdla_clear(dev);
-			break;
-
-		case SDLA_WRITEMEM:
-		case SDLA_READMEM:
-			if(!capable(CAP_SYS_RAWIO))
-				return -EPERM;
-			return sdla_xfer(dev, ifr->ifr_data, cmd == SDLA_READMEM);
-
-		case SDLA_START:
-			sdla_start(dev);
-			break;
-
-		case SDLA_STOP:
-			sdla_stop(dev);
-			break;
-
-		default:
-			return -EOPNOTSUPP;
-	}
-	return 0;
-}
-
-static int sdla_change_mtu(struct net_device *dev, int new_mtu)
-{
-	if (netif_running(dev))
-		return -EBUSY;
-
-	/* for now, you can't change the MTU! */
-	return -EOPNOTSUPP;
-}
-
-static int sdla_set_config(struct net_device *dev, struct ifmap *map)
-{
-	struct frad_local *flp;
-	int               i;
-	char              byte;
-	unsigned base;
-	int err = -EINVAL;
-
-	flp = netdev_priv(dev);
-
-	if (flp->initialized)
-		return -EINVAL;
-
-	for(i=0; i < ARRAY_SIZE(valid_port); i++)
-		if (valid_port[i] == map->base_addr)
-			break;   
-
-	if (i == ARRAY_SIZE(valid_port))
-		return -EINVAL;
-
-	if (!request_region(map->base_addr, SDLA_IO_EXTENTS, dev->name)){
-		pr_warn("io-port 0x%04lx in use\n", dev->base_addr);
-		return -EINVAL;
-	}
-	base = map->base_addr;
-
-	/* test for card types, S502A, S502E, S507, S508                 */
-	/* these tests shut down the card completely, so clear the state */
-	flp->type = SDLA_UNKNOWN;
-	flp->state = 0;
-   
-	for(i=1;i<SDLA_IO_EXTENTS;i++)
-		if (inb(base + i) != 0xFF)
-			break;
-
-	if (i == SDLA_IO_EXTENTS) {   
-		outb(SDLA_HALT, base + SDLA_REG_Z80_CONTROL);
-		if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x08) {
-			outb(SDLA_S502E_INTACK, base + SDLA_REG_CONTROL);
-			if ((inb(base + SDLA_S502_STS) & 0x0F) == 0x0C) {
-				outb(SDLA_HALT, base + SDLA_REG_CONTROL);
-				flp->type = SDLA_S502E;
-				goto got_type;
-			}
-		}
-	}
-
-	for(byte=inb(base),i=0;i<SDLA_IO_EXTENTS;i++)
-		if (inb(base + i) != byte)
-			break;
-
-	if (i == SDLA_IO_EXTENTS) {
-		outb(SDLA_HALT, base + SDLA_REG_CONTROL);
-		if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x30) {
-			outb(SDLA_S507_ENABLE, base + SDLA_REG_CONTROL);
-			if ((inb(base + SDLA_S502_STS) & 0x7E) == 0x32) {
-				outb(SDLA_HALT, base + SDLA_REG_CONTROL);
-				flp->type = SDLA_S507;
-				goto got_type;
-			}
-		}
-	}
-
-	outb(SDLA_HALT, base + SDLA_REG_CONTROL);
-	if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x00) {
-		outb(SDLA_S508_INTEN, base + SDLA_REG_CONTROL);
-		if ((inb(base + SDLA_S508_STS) & 0x3F) == 0x10) {
-			outb(SDLA_HALT, base + SDLA_REG_CONTROL);
-			flp->type = SDLA_S508;
-			goto got_type;
-		}
-	}
-
-	outb(SDLA_S502A_HALT, base + SDLA_REG_CONTROL);
-	if (inb(base + SDLA_S502_STS) == 0x40) {
-		outb(SDLA_S502A_START, base + SDLA_REG_CONTROL);
-		if (inb(base + SDLA_S502_STS) == 0x40) {
-			outb(SDLA_S502A_INTEN, base + SDLA_REG_CONTROL);
-			if (inb(base + SDLA_S502_STS) == 0x44) {
-				outb(SDLA_S502A_START, base + SDLA_REG_CONTROL);
-				flp->type = SDLA_S502A;
-				goto got_type;
-			}
-		}
-	}
-
-	netdev_notice(dev, "Unknown card type\n");
-	err = -ENODEV;
-	goto fail;
-
-got_type:
-	switch(base) {
-		case 0x270:
-		case 0x280:
-		case 0x380: 
-		case 0x390:
-			if (flp->type != SDLA_S508 && flp->type != SDLA_S507)
-				goto fail;
-	}
-
-	switch (map->irq) {
-		case 2:
-			if (flp->type != SDLA_S502E)
-				goto fail;
-			break;
-
-		case 10:
-		case 11:
-		case 12:
-		case 15:
-		case 4:
-			if (flp->type != SDLA_S508 && flp->type != SDLA_S507)
-				goto fail;
-			break;
-		case 3:
-		case 5:
-		case 7:
-			if (flp->type == SDLA_S502A)
-				goto fail;
-			break;
-
-		default:
-			goto fail;
-	}
-
-	err = -EAGAIN;
-	if (request_irq(dev->irq, sdla_isr, 0, dev->name, dev)) 
-		goto fail;
-
-	if (flp->type == SDLA_S507) {
-		switch(dev->irq) {
-			case 3:
-				flp->state = SDLA_S507_IRQ3;
-				break;
-			case 4:
-				flp->state = SDLA_S507_IRQ4;
-				break;
-			case 5:
-				flp->state = SDLA_S507_IRQ5;
-				break;
-			case 7:
-				flp->state = SDLA_S507_IRQ7;
-				break;
-			case 10:
-				flp->state = SDLA_S507_IRQ10;
-				break;
-			case 11:
-				flp->state = SDLA_S507_IRQ11;
-				break;
-			case 12:
-				flp->state = SDLA_S507_IRQ12;
-				break;
-			case 15:
-				flp->state = SDLA_S507_IRQ15;
-				break;
-		}
-	}
-
-	for(i=0; i < ARRAY_SIZE(valid_mem); i++)
-		if (valid_mem[i] == map->mem_start)
-			break;   
-
-	err = -EINVAL;
-	if (i == ARRAY_SIZE(valid_mem))
-		goto fail2;
-
-	if (flp->type == SDLA_S502A && (map->mem_start & 0xF000) >> 12 == 0x0E)
-		goto fail2;
-
-	if (flp->type != SDLA_S507 && map->mem_start >> 16 == 0x0B)
-		goto fail2;
-
-	if (flp->type == SDLA_S507 && map->mem_start >> 16 == 0x0D)
-		goto fail2;
-
-	byte = flp->type != SDLA_S508 ? SDLA_8K_WINDOW : 0;
-	byte |= (map->mem_start & 0xF000) >> (12 + (flp->type == SDLA_S508 ? 1 : 0));
-	switch(flp->type) {
-		case SDLA_S502A:
-		case SDLA_S502E:
-			switch (map->mem_start >> 16) {
-				case 0x0A:
-					byte |= SDLA_S502_SEG_A;
-					break;
-				case 0x0C:
-					byte |= SDLA_S502_SEG_C;
-					break;
-				case 0x0D:
-					byte |= SDLA_S502_SEG_D;
-					break;
-				case 0x0E:
-					byte |= SDLA_S502_SEG_E;
-					break;
-			}
-			break;
-		case SDLA_S507:
-			switch (map->mem_start >> 16) {
-				case 0x0A:
-					byte |= SDLA_S507_SEG_A;
-					break;
-				case 0x0B:
-					byte |= SDLA_S507_SEG_B;
-					break;
-				case 0x0C:
-					byte |= SDLA_S507_SEG_C;
-					break;
-				case 0x0E:
-					byte |= SDLA_S507_SEG_E;
-					break;
-			}
-			break;
-		case SDLA_S508:
-			switch (map->mem_start >> 16) {
-				case 0x0A:
-					byte |= SDLA_S508_SEG_A;
-					break;
-				case 0x0C:
-					byte |= SDLA_S508_SEG_C;
-					break;
-				case 0x0D:
-					byte |= SDLA_S508_SEG_D;
-					break;
-				case 0x0E:
-					byte |= SDLA_S508_SEG_E;
-					break;
-			}
-			break;
-	}
-
-	/* set the memory bits, and enable access */
-	outb(byte, base + SDLA_REG_PC_WINDOW);
-
-	switch(flp->type)
-	{
-		case SDLA_S502E:
-			flp->state = SDLA_S502E_ENABLE;
-			break;
-		case SDLA_S507:
-			flp->state |= SDLA_MEMEN;
-			break;
-		case SDLA_S508:
-			flp->state = SDLA_MEMEN;
-			break;
-	}
-	outb(flp->state, base + SDLA_REG_CONTROL);
-
-	dev->irq = map->irq;
-	dev->base_addr = base;
-	dev->mem_start = map->mem_start;
-	dev->mem_end = dev->mem_start + 0x2000;
-	flp->initialized = 1;
-	return 0;
-
-fail2:
-	free_irq(map->irq, dev);
-fail:
-	release_region(base, SDLA_IO_EXTENTS);
-	return err;
-}
- 
-static const struct net_device_ops sdla_netdev_ops = {
-	.ndo_open	= sdla_open,
-	.ndo_stop	= sdla_close,
-	.ndo_do_ioctl	= sdla_ioctl,
-	.ndo_set_config	= sdla_set_config,
-	.ndo_start_xmit	= sdla_transmit,
-	.ndo_change_mtu	= sdla_change_mtu,
-};
-
-static void setup_sdla(struct net_device *dev)
-{
-	struct frad_local *flp = netdev_priv(dev);
-
-	netdev_boot_setup_check(dev);
-
-	dev->netdev_ops		= &sdla_netdev_ops;
-	dev->flags		= 0;
-	dev->type		= 0xFFFF;
-	dev->hard_header_len	= 0;
-	dev->addr_len		= 0;
-	dev->mtu		= SDLA_MAX_MTU;
-
-	flp->activate		= sdla_activate;
-	flp->deactivate		= sdla_deactivate;
-	flp->assoc		= sdla_assoc;
-	flp->deassoc		= sdla_deassoc;
-	flp->dlci_conf		= sdla_dlci_conf;
-	flp->dev		= dev;
-
-	timer_setup(&flp->timer, sdla_poll, 0);
-	flp->timer.expires	= 1;
-}
-
-static struct net_device *sdla;
-
-static int __init init_sdla(void)
-{
-	int err;
-
-	printk("%s.\n", version);
-
-	sdla = alloc_netdev(sizeof(struct frad_local), "sdla0",
-			    NET_NAME_UNKNOWN, setup_sdla);
-	if (!sdla) 
-		return -ENOMEM;
-
-	err = register_netdev(sdla);
-	if (err) 
-		free_netdev(sdla);
-
-	return err;
-}
-
-static void __exit exit_sdla(void)
-{
-	struct frad_local *flp = netdev_priv(sdla);
-
-	unregister_netdev(sdla);
-	if (flp->initialized) {
-		free_irq(sdla->irq, sdla);
-		release_region(sdla->base_addr, SDLA_IO_EXTENTS);
-	}
-	del_timer_sync(&flp->timer);
-	free_netdev(sdla);
-}
-
-MODULE_LICENSE("GPL");
-
-module_init(init_sdla);
-module_exit(exit_sdla);