initial_commit

16 files changed, 3139 insertions, 0 deletions

diff --git a/drivers/isdn/sc/Kconfig b/drivers/isdn/sc/Kconfig
new file mode 100644
index 00000000..7469863a
--- /dev/null
+++ b/drivers/isdn/sc/Kconfig
@@ -0,0 +1,8 @@
+config ISDN_DRV_SC
+	tristate "Spellcaster support"
+	depends on ISA
+	help
+	  This enables support for the Spellcaster BRI ISDN boards.  This
+	  driver currently builds only in a modularized version.
+	  To build it, choose M here: the module will be called sc.
+	  See <file:Documentation/isdn/README.sc> for more information.
diff --git a/drivers/isdn/sc/Makefile b/drivers/isdn/sc/Makefile
new file mode 100644
index 00000000..0f2b7d60
--- /dev/null
+++ b/drivers/isdn/sc/Makefile
@@ -0,0 +1,10 @@
+# Makefile for the sc ISDN device driver
+
+# Each configuration option enables a list of files.
+
+obj-$(CONFIG_ISDN_DRV_SC)	+= sc.o
+
+# Multipart objects.
+
+sc-y				:= shmem.o init.o packet.o command.o event.o \
+		   		   ioctl.o interrupt.o message.o timer.o	
diff --git a/drivers/isdn/sc/card.h b/drivers/isdn/sc/card.h
new file mode 100644
index 00000000..0120bcf8
--- /dev/null
+++ b/drivers/isdn/sc/card.h
@@ -0,0 +1,131 @@
+/* $Id: card.h,v 1.1.10.1 2001/09/23 22:24:59 kai Exp $
+ *
+ * Driver parameters for SpellCaster ISA ISDN adapters
+ *
+ * Copyright (C) 1996  SpellCaster Telecommunications Inc.
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * For more information, please contact gpl-info@spellcast.com or write:
+ *
+ *     SpellCaster Telecommunications Inc.
+ *     5621 Finch Avenue East, Unit #3
+ *     Scarborough, Ontario  Canada
+ *     M1B 2T9
+ *     +1 (416) 297-8565
+ *     +1 (416) 297-6433 Facsimile
+ */
+
+#ifndef CARD_H
+#define CARD_H
+
+/*
+ * We need these if they're not already included
+ */
+#include <linux/timer.h>
+#include <linux/time.h>
+#include <linux/isdnif.h>
+#include <linux/irqreturn.h>
+#include "message.h"
+#include "scioc.h"
+
+/*
+ * Amount of time to wait for a reset to complete
+ */
+#define CHECKRESET_TIME		msecs_to_jiffies(4000)
+
+/*
+ * Amount of time between line status checks
+ */
+#define CHECKSTAT_TIME		msecs_to_jiffies(8000)
+
+/*
+ * The maximum amount of time to wait for a message response
+ * to arrive. Use exclusively by send_and_receive
+ */
+#define SAR_TIMEOUT		msecs_to_jiffies(10000)
+
+/*
+ * Macro to determine is a card id is valid
+ */
+#define IS_VALID_CARD(x)	((x >= 0) && (x <= cinst))
+
+/*
+ * Per channel status and configuration
+ */
+typedef struct {
+	int l2_proto;
+	int l3_proto;
+	char dn[50];
+	unsigned long first_sendbuf;	/* Offset of first send buffer */
+	unsigned int num_sendbufs;	/* Number of send buffers */
+	unsigned int free_sendbufs;	/* Number of free sendbufs */
+	unsigned int next_sendbuf;	/* Next sequential buffer */
+	char eazlist[50];		/* Set with SETEAZ */
+	char sillist[50];		/* Set with SETSIL */
+	int eazclear;			/* Don't accept calls if TRUE */
+} bchan;
+
+/*
+ * Everything you want to know about the adapter ...
+ */
+typedef struct {
+	int model;
+	int driverId;			/* LL Id */
+	char devicename[20];		/* The device name */
+	isdn_if *card;			/* ISDN4Linux structure */
+	bchan *channel;			/* status of the B channels */
+	char nChannels;			/* Number of channels */
+	unsigned int interrupt;		/* Interrupt number */
+	int iobase;			/* I/O Base address */
+	int ioport[MAX_IO_REGS];	/* Index to I/O ports */
+	int shmem_pgport;		/* port for the exp mem page reg. */
+	int shmem_magic;		/* adapter magic number */
+	unsigned int rambase;		/* Shared RAM base address */
+	unsigned int ramsize;		/* Size of shared memory */
+	RspMessage async_msg;		/* Async response message */
+	int want_async_messages;	/* Snoop the Q ? */
+	unsigned char seq_no;		/* Next send seq. number */
+	struct timer_list reset_timer;	/* Check reset timer */
+	struct timer_list stat_timer;	/* Check startproc timer */
+	unsigned char nphystat;		/* Latest PhyStat info */
+	unsigned char phystat;		/* Last PhyStat info */
+	HWConfig_pl hwconfig;		/* Hardware config info */
+	char load_ver[11];		/* CommManage Version string */
+	char proc_ver[11];		/* CommEngine Version */
+	int StartOnReset;		/* Indicates startproc after reset */
+	int EngineUp;			/* Indicates CommEngine Up */
+	int trace_mode;			/* Indicate if tracing is on */
+	spinlock_t lock;		/* local lock */
+} board;
+
+
+extern board *sc_adapter[];
+extern int cinst;
+
+void memcpy_toshmem(int card, void *dest, const void *src, size_t n);
+void memcpy_fromshmem(int card, void *dest, const void *src, size_t n);
+int get_card_from_id(int driver);
+int indicate_status(int card, int event, ulong Channel, char *Data);
+irqreturn_t interrupt_handler(int interrupt, void *cardptr);
+int sndpkt(int devId, int channel, int ack, struct sk_buff *data);
+void rcvpkt(int card, RspMessage *rcvmsg);
+int command(isdn_ctrl *cmd);
+int reset(int card);
+int startproc(int card);
+int send_and_receive(int card, unsigned int procid, unsigned char type,
+		     unsigned char class, unsigned char code,
+		     unsigned char link, unsigned char data_len,
+		     unsigned char *data,  RspMessage *mesgdata, int timeout);
+void flushreadfifo (int card);
+int sendmessage(int card, unsigned int procid, unsigned int type,
+		unsigned int class, unsigned int code, unsigned int link,
+		unsigned int data_len, unsigned int *data);
+int receivemessage(int card, RspMessage *rspmsg);
+int sc_ioctl(int card, scs_ioctl *data);
+int setup_buffers(int card, int c);
+void sc_check_reset(unsigned long data);
+void check_phystat(unsigned long data);
+
+#endif /* CARD_H */
diff --git a/drivers/isdn/sc/command.c b/drivers/isdn/sc/command.c
new file mode 100644
index 00000000..0e4969c2
--- /dev/null
+++ b/drivers/isdn/sc/command.c
@@ -0,0 +1,363 @@
+/* $Id: command.c,v 1.4.10.1 2001/09/23 22:24:59 kai Exp $
+ *
+ * Copyright (C) 1996  SpellCaster Telecommunications Inc.
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * For more information, please contact gpl-info@spellcast.com or write:
+ *
+ *     SpellCaster Telecommunications Inc.
+ *     5621 Finch Avenue East, Unit #3
+ *     Scarborough, Ontario  Canada
+ *     M1B 2T9
+ *     +1 (416) 297-8565
+ *     +1 (416) 297-6433 Facsimile
+ */
+
+#include <linux/module.h>
+#include "includes.h"		/* This must be first */
+#include "hardware.h"
+#include "message.h"
+#include "card.h"
+#include "scioc.h"
+
+static int dial(int card, unsigned long channel, setup_parm setup);
+static int hangup(int card, unsigned long channel);
+static int answer(int card, unsigned long channel);
+static int clreaz(int card, unsigned long channel);
+static int seteaz(int card, unsigned long channel, char *);
+static int setl2(int card, unsigned long arg);
+static int setl3(int card, unsigned long arg);
+static int acceptb(int card, unsigned long channel);
+
+#ifdef DEBUG
+/*
+ * Translate command codes to strings
+ */
+static char *commands[] = { "ISDN_CMD_IOCTL",
+			    "ISDN_CMD_DIAL",
+			    "ISDN_CMD_ACCEPTB",
+			    "ISDN_CMD_ACCEPTB",
+			    "ISDN_CMD_HANGUP",
+			    "ISDN_CMD_CLREAZ",
+			    "ISDN_CMD_SETEAZ",
+			    NULL,
+			    NULL,
+			    NULL,
+			    "ISDN_CMD_SETL2",
+			    NULL,
+			    "ISDN_CMD_SETL3",
+			    NULL,
+			    NULL,
+			    NULL,
+			    NULL,
+			    NULL, };
+
+/*
+ * Translates ISDN4Linux protocol codes to strings for debug messages
+ */
+static char *l3protos[] = { "ISDN_PROTO_L3_TRANS" };
+static char *l2protos[] = { "ISDN_PROTO_L2_X75I",
+			    "ISDN_PROTO_L2_X75UI",
+			    "ISDN_PROTO_L2_X75BUI",
+			    "ISDN_PROTO_L2_HDLC",
+			    "ISDN_PROTO_L2_TRANS" };
+#endif
+
+int get_card_from_id(int driver)
+{
+	int i;
+
+	for(i = 0 ; i < cinst ; i++) {
+		if(sc_adapter[i]->driverId == driver)
+			return i;
+	}
+	return -ENODEV;
+}
+
+/* 
+ * command
+ */
+
+int command(isdn_ctrl *cmd)
+{
+	int card;
+
+	card = get_card_from_id(cmd->driver);
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return -ENODEV;
+	}
+
+	/*
+	 * Dispatch the command
+	 */
+	switch(cmd->command) {
+	case ISDN_CMD_IOCTL:
+	{
+		unsigned long 	cmdptr;
+		scs_ioctl	ioc;
+
+		memcpy(&cmdptr, cmd->parm.num, sizeof(unsigned long));
+		if (copy_from_user(&ioc, (scs_ioctl __user *)cmdptr,
+				   sizeof(scs_ioctl))) {
+			pr_debug("%s: Failed to verify user space 0x%lx\n",
+				sc_adapter[card]->devicename, cmdptr);
+			return -EFAULT;
+		}
+		return sc_ioctl(card, &ioc);
+	}
+	case ISDN_CMD_DIAL:
+		return dial(card, cmd->arg, cmd->parm.setup);
+	case ISDN_CMD_HANGUP:
+		return hangup(card, cmd->arg);
+	case ISDN_CMD_ACCEPTD:
+		return answer(card, cmd->arg);
+	case ISDN_CMD_ACCEPTB:
+		return acceptb(card, cmd->arg);
+	case ISDN_CMD_CLREAZ:
+		return clreaz(card, cmd->arg);
+	case ISDN_CMD_SETEAZ:
+		return seteaz(card, cmd->arg, cmd->parm.num);
+	case ISDN_CMD_SETL2:
+		return setl2(card, cmd->arg);
+	case ISDN_CMD_SETL3:
+		return setl3(card, cmd->arg);
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+/*
+ * start the onboard firmware
+ */
+int startproc(int card) 
+{
+	int status;
+
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return -ENODEV;
+	}
+
+	/*
+	 * send start msg 
+	 */
+       	status = sendmessage(card, CMPID,cmReqType2,
+			  cmReqClass0,
+			  cmReqStartProc,
+			  0,0,NULL);
+	pr_debug("%s: Sent startProc\n", sc_adapter[card]->devicename);
+	
+	return status;
+}
+
+
+/*
+ * Dials the number passed in 
+ */
+static int dial(int card, unsigned long channel, setup_parm setup)
+{
+	int status;
+	char Phone[48];
+  
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return -ENODEV;
+	}
+
+	/*extract ISDN number to dial from eaz/msn string*/ 
+	strcpy(Phone,setup.phone); 
+
+	/*send the connection message*/
+	status = sendmessage(card, CEPID,ceReqTypePhy,
+				ceReqClass1,
+				ceReqPhyConnect,
+				(unsigned char) channel+1, 
+				strlen(Phone),
+				(unsigned int *) Phone);
+
+	pr_debug("%s: Dialing %s on channel %lu\n",
+		sc_adapter[card]->devicename, Phone, channel+1);
+	
+	return status;
+}
+
+/*
+ * Answer an incoming call 
+ */
+static int answer(int card, unsigned long channel)
+{
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return -ENODEV;
+	}
+
+	if(setup_buffers(card, channel+1)) {
+		hangup(card, channel+1);
+		return -ENOBUFS;
+	}
+
+	indicate_status(card, ISDN_STAT_BCONN,channel,NULL);
+	pr_debug("%s: Answered incoming call on channel %lu\n",
+		sc_adapter[card]->devicename, channel+1);
+	return 0;
+}
+
+/*
+ * Hangup up the call on specified channel
+ */
+static int hangup(int card, unsigned long channel)
+{
+	int status;
+
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return -ENODEV;
+	}
+
+	status = sendmessage(card, CEPID, ceReqTypePhy,
+						 ceReqClass1,
+						 ceReqPhyDisconnect,
+						 (unsigned char) channel+1,
+						 0,
+						 NULL);
+	pr_debug("%s: Sent HANGUP message to channel %lu\n",
+		sc_adapter[card]->devicename, channel+1);
+	return status;
+}
+
+/*
+ * Set the layer 2 protocol (X.25, HDLC, Raw)
+ */
+static int setl2(int card, unsigned long arg)
+{
+	int status =0;
+	int protocol,channel;
+
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return -ENODEV;
+	}
+	protocol = arg >> 8;
+	channel = arg & 0xff;
+	sc_adapter[card]->channel[channel].l2_proto = protocol;
+
+	/*
+	 * check that the adapter is also set to the correct protocol
+	 */
+	pr_debug("%s: Sending GetFrameFormat for channel %d\n",
+		sc_adapter[card]->devicename, channel+1);
+	status = sendmessage(card, CEPID, ceReqTypeCall,
+ 				ceReqClass0,
+ 				ceReqCallGetFrameFormat,
+ 				(unsigned char)channel+1,
+ 				1,
+ 				(unsigned int *) protocol);
+	if(status) 
+		return status;
+	return 0;
+}
+
+/*
+ * Set the layer 3 protocol
+ */
+static int setl3(int card, unsigned long channel)
+{
+	int protocol = channel >> 8;
+
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return -ENODEV;
+	}
+
+	sc_adapter[card]->channel[channel].l3_proto = protocol;
+	return 0;
+}
+
+static int acceptb(int card, unsigned long channel)
+{
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return -ENODEV;
+	}
+
+	if(setup_buffers(card, channel+1))
+	{
+		hangup(card, channel+1);
+		return -ENOBUFS;
+	}
+
+	pr_debug("%s: B-Channel connection accepted on channel %lu\n",
+		sc_adapter[card]->devicename, channel+1);
+	indicate_status(card, ISDN_STAT_BCONN, channel, NULL);
+	return 0;
+}
+
+static int clreaz(int card, unsigned long arg)
+{
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return -ENODEV;
+	}
+
+	strcpy(sc_adapter[card]->channel[arg].eazlist, "");
+	sc_adapter[card]->channel[arg].eazclear = 1;
+	pr_debug("%s: EAZ List cleared for channel %lu\n",
+		sc_adapter[card]->devicename, arg+1);
+	return 0;
+}
+
+static int seteaz(int card, unsigned long arg, char *num)
+{
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return -ENODEV;
+	}
+
+	strcpy(sc_adapter[card]->channel[arg].eazlist, num);
+	sc_adapter[card]->channel[arg].eazclear = 0;
+	pr_debug("%s: EAZ list for channel %lu set to: %s\n",
+		sc_adapter[card]->devicename, arg+1,
+		sc_adapter[card]->channel[arg].eazlist);
+	return 0;
+}
+
+int reset(int card)
+{
+	unsigned long flags;
+
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return -ENODEV;
+	}
+
+	indicate_status(card, ISDN_STAT_STOP, 0, NULL);
+
+	if(sc_adapter[card]->EngineUp) {
+		del_timer(&sc_adapter[card]->stat_timer);
+	}
+
+	sc_adapter[card]->EngineUp = 0;
+
+	spin_lock_irqsave(&sc_adapter[card]->lock, flags);
+	init_timer(&sc_adapter[card]->reset_timer);
+	sc_adapter[card]->reset_timer.function = sc_check_reset;
+	sc_adapter[card]->reset_timer.data = card;
+	sc_adapter[card]->reset_timer.expires = jiffies + CHECKRESET_TIME;
+	add_timer(&sc_adapter[card]->reset_timer);
+	spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
+
+	outb(0x1,sc_adapter[card]->ioport[SFT_RESET]);
+
+	pr_debug("%s: Adapter Reset\n", sc_adapter[card]->devicename);
+	return 0;
+}
+
+void flushreadfifo (int card)
+{
+	while(inb(sc_adapter[card]->ioport[FIFO_STATUS]) & RF_HAS_DATA)
+		inb(sc_adapter[card]->ioport[FIFO_READ]);
+}
diff --git a/drivers/isdn/sc/event.c b/drivers/isdn/sc/event.c
new file mode 100644
index 00000000..498f4039
--- /dev/null
+++ b/drivers/isdn/sc/event.c
@@ -0,0 +1,68 @@
+/* $Id: event.c,v 1.4.8.1 2001/09/23 22:24:59 kai Exp $
+ *
+ * Copyright (C) 1996  SpellCaster Telecommunications Inc.
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * For more information, please contact gpl-info@spellcast.com or write:
+ *
+ *     SpellCaster Telecommunications Inc.
+ *     5621 Finch Avenue East, Unit #3
+ *     Scarborough, Ontario  Canada
+ *     M1B 2T9
+ *     +1 (416) 297-8565
+ *     +1 (416) 297-6433 Facsimile
+ */
+
+#include "includes.h"
+#include "hardware.h"
+#include "message.h"
+#include "card.h"
+
+#ifdef DEBUG
+static char *events[] = { "ISDN_STAT_STAVAIL",
+			  "ISDN_STAT_ICALL",
+			  "ISDN_STAT_RUN",
+			  "ISDN_STAT_STOP",
+			  "ISDN_STAT_DCONN",
+			  "ISDN_STAT_BCONN",
+			  "ISDN_STAT_DHUP",
+			  "ISDN_STAT_BHUP",
+			  "ISDN_STAT_CINF",
+			  "ISDN_STAT_LOAD",
+			  "ISDN_STAT_UNLOAD",
+			  "ISDN_STAT_BSENT",
+			  "ISDN_STAT_NODCH",
+			  "ISDN_STAT_ADDCH",
+			  "ISDN_STAT_CAUSE" };
+#endif
+
+int indicate_status(int card, int event,ulong Channel,char *Data)
+{
+	isdn_ctrl cmd;
+
+#ifdef DEBUG
+	pr_debug("%s: Indicating event %s on Channel %d\n",
+		sc_adapter[card]->devicename, events[event-256], Channel);
+#endif
+	if (Data != NULL){
+		pr_debug("%s: Event data: %s\n", sc_adapter[card]->devicename,
+			Data);
+		switch (event) {
+			case ISDN_STAT_BSENT:
+				memcpy(&cmd.parm.length, Data, sizeof(cmd.parm.length));
+				break;
+			case ISDN_STAT_ICALL:
+				memcpy(&cmd.parm.setup, Data, sizeof(cmd.parm.setup));
+				break;
+			default:
+				strcpy(cmd.parm.num, Data);
+		}
+	}
+
+	cmd.command = event;
+	cmd.driver = sc_adapter[card]->driverId;
+	cmd.arg = Channel;
+	return sc_adapter[card]->card->statcallb(&cmd);
+}
diff --git a/drivers/isdn/sc/hardware.h b/drivers/isdn/sc/hardware.h
new file mode 100644
index 00000000..62732485
--- /dev/null
+++ b/drivers/isdn/sc/hardware.h
@@ -0,0 +1,110 @@
+/*
+ * Hardware specific macros, defines and structures
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#ifndef HARDWARE_H
+#define HARDWARE_H
+
+#include <asm/param.h>			/* For HZ */
+
+/*
+ * General hardware parameters common to all ISA adapters
+ */
+
+#define MAX_CARDS	4		/* The maximum number of cards to
+					   control or probe for. */
+
+#define SIGNATURE	0x87654321	/* Board reset signature */
+#define SIG_OFFSET	0x1004		/* Where to find signature in shared RAM */
+#define TRACE_OFFSET	0x1008		/* Trace enable word offset in shared RAM */
+#define BUFFER_OFFSET	0x1800		/* Beginning of buffers */
+
+/* I/O Port parameters */
+#define IOBASE_MIN	0x180		/* Lowest I/O port address */
+#define IOBASE_MAX	0x3C0		/* Highest I/O port address */
+#define IOBASE_OFFSET	0x20		/* Inter-board I/O port gap used during
+					   probing */
+#define FIFORD_OFFSET	0x0
+#define FIFOWR_OFFSET	0x400
+#define FIFOSTAT_OFFSET	0x1000
+#define RESET_OFFSET	0x2800
+#define PG0_OFFSET	0x3000		/* Offset from I/O Base for Page 0 register */
+#define PG1_OFFSET	0x3400		/* Offset from I/O Base for Page 1 register */
+#define PG2_OFFSET	0x3800		/* Offset from I/O Base for Page 2 register */
+#define PG3_OFFSET	0x3C00		/* Offset from I/O Base for Page 3 register */
+
+#define FIFO_READ	0		/* FIFO Read register */
+#define FIFO_WRITE	1		/* FIFO Write rgister */
+#define LO_ADDR_PTR	2		/* Extended RAM Low Addr Pointer */
+#define HI_ADDR_PTR	3		/* Extended RAM High Addr Pointer */
+#define NOT_USED_1	4
+#define FIFO_STATUS	5		/* FIFO Status Register */
+#define NOT_USED_2	6
+#define MEM_OFFSET	7
+#define SFT_RESET	10		/* Reset Register */
+#define EXP_BASE	11		/* Shared RAM Base address */
+#define EXP_PAGE0	12		/* Shared RAM Page0 register */
+#define EXP_PAGE1	13		/* Shared RAM Page1 register */
+#define EXP_PAGE2	14		/* Shared RAM Page2 register */
+#define EXP_PAGE3	15		/* Shared RAM Page3 register */
+#define IRQ_SELECT	16		/* IRQ selection register */
+#define MAX_IO_REGS	17		/* Total number of I/O ports */
+
+/* FIFO register values */
+#define RF_HAS_DATA	0x01		/* fifo has data */
+#define RF_QUART_FULL	0x02		/* fifo quarter full */
+#define RF_HALF_FULL	0x04		/* fifo half full */
+#define RF_NOT_FULL	0x08		/* fifo not full */
+#define WF_HAS_DATA	0x10		/* fifo has data */
+#define WF_QUART_FULL	0x20		/* fifo quarter full */
+#define WF_HALF_FULL	0x40		/* fifo half full */
+#define WF_NOT_FULL	0x80		/* fifo not full */
+
+/* Shared RAM parameters */
+#define SRAM_MIN	0xC0000         /* Lowest host shared RAM address */
+#define SRAM_MAX	0xEFFFF         /* Highest host shared RAM address */
+#define SRAM_PAGESIZE	0x4000		/* Size of one RAM page (16K) */
+
+/* Shared RAM buffer parameters */
+#define BUFFER_SIZE	0x800		/* The size of a buffer in bytes */
+#define BUFFER_BASE	BUFFER_OFFSET	/* Offset from start of shared RAM
+					   where buffer start */
+#define BUFFERS_MAX	16		/* Maximum number of send/receive
+					   buffers per channel */
+#define HDLC_PROTO	0x01		/* Frame Format for Layer 2 */
+
+#define BRI_BOARD	0
+#define POTS_BOARD	1
+#define PRI_BOARD	2
+
+/*
+ * Specific hardware parameters for the DataCommute/BRI
+ */
+#define BRI_CHANNELS	2		/* Number of B channels */
+#define BRI_BASEPG_VAL	0x98
+#define BRI_MAGIC	0x60000		/* Magic Number */
+#define BRI_MEMSIZE	0x10000		/* Amount of RAM (64K) */
+#define BRI_PARTNO	"72-029"
+#define BRI_FEATURES	ISDN_FEATURE_L2_HDLC | ISDN_FEATURE_L3_TRANS;
+/*
+ * Specific hardware parameters for the DataCommute/PRI
+ */
+#define PRI_CHANNELS	23		/* Number of B channels */
+#define PRI_BASEPG_VAL	0x88
+#define PRI_MAGIC	0x20000		/* Magic Number */
+#define PRI_MEMSIZE	0x100000	/* Amount of RAM (1M) */
+#define PRI_PARTNO	"72-030"
+#define PRI_FEATURES	ISDN_FEATURE_L2_HDLC | ISDN_FEATURE_L3_TRANS;
+
+/*
+ * Some handy macros
+ */
+
+/* Determine if a channel number is valid for the adapter */
+#define IS_VALID_CHANNEL(y,x)	((x>0) && (x <= sc_adapter[y]->channels))
+
+#endif
diff --git a/drivers/isdn/sc/includes.h b/drivers/isdn/sc/includes.h
new file mode 100644
index 00000000..4766e5b7
--- /dev/null
+++ b/drivers/isdn/sc/includes.h
@@ -0,0 +1,16 @@
+/*
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#include <linux/errno.h>
+#include <asm/io.h>
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/ioport.h>
+#include <linux/timer.h>
+#include <linux/wait.h>
+#include <linux/isdnif.h>
diff --git a/drivers/isdn/sc/init.c b/drivers/isdn/sc/init.c
new file mode 100644
index 00000000..ca710ab2
--- /dev/null
+++ b/drivers/isdn/sc/init.c
@@ -0,0 +1,552 @@
+/*
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include "includes.h"
+#include "hardware.h"
+#include "card.h"
+
+MODULE_DESCRIPTION("ISDN4Linux: Driver for Spellcaster card");
+MODULE_AUTHOR("Spellcaster Telecommunications Inc.");
+MODULE_LICENSE("GPL");
+
+board *sc_adapter[MAX_CARDS];
+int cinst;
+
+static char devname[] = "scX";
+static const char version[] = "2.0b1";
+
+static const char *boardname[] = { "DataCommute/BRI", "DataCommute/PRI", "TeleCommute/BRI" };
+
+/* insmod set parameters */
+static unsigned int io[] = {0,0,0,0};
+static unsigned char irq[] = {0,0,0,0};
+static unsigned long ram[] = {0,0,0,0};
+static int do_reset = 0;
+
+module_param_array(io, int, NULL, 0);
+module_param_array(irq, int, NULL, 0);
+module_param_array(ram, int, NULL, 0);
+module_param(do_reset, bool, 0);
+
+static int identify_board(unsigned long, unsigned int);
+
+static int __init sc_init(void)
+{
+	int b = -1;
+	int i, j;
+	int status = -ENODEV;
+
+	unsigned long memsize = 0;
+	unsigned long features = 0;
+	isdn_if *interface;
+	unsigned char channels;
+	unsigned char pgport;
+	unsigned long magic;
+	int model;
+	int last_base = IOBASE_MIN;
+	int probe_exhasted = 0;
+
+#ifdef MODULE
+	pr_info("SpellCaster ISA ISDN Adapter Driver rev. %s Loaded\n", version);
+#else
+	pr_info("SpellCaster ISA ISDN Adapter Driver rev. %s\n", version);
+#endif
+	pr_info("Copyright (C) 1996 SpellCaster Telecommunications Inc.\n");
+
+	while(b++ < MAX_CARDS - 1) {
+		pr_debug("Probing for adapter #%d\n", b);
+		/*
+		 * Initialize reusable variables
+		 */
+		model = -1;
+		magic = 0;
+		channels = 0;
+		pgport = 0;
+
+		/* 
+		 * See if we should probe for IO base 
+		 */
+		pr_debug("I/O Base for board %d is 0x%x, %s probe\n", b, io[b],
+			io[b] == 0 ? "will" : "won't");
+		if(io[b]) {
+			/*
+			 * No, I/O Base has been provided
+			 */
+			for (i = 0 ; i < MAX_IO_REGS - 1 ; i++) {
+				if(!request_region(io[b] + i * 0x400, 1, "sc test")) {
+					pr_debug("request_region for 0x%x failed\n", io[b] + i * 0x400);
+					io[b] = 0;
+					break;
+				} else
+					release_region(io[b] + i * 0x400, 1);
+			}
+
+			/*
+			 * Confirm the I/O Address with a test
+			 */
+			if(io[b] == 0) {
+				pr_debug("I/O Address invalid.\n");
+				continue;
+			}
+
+			outb(0x18, io[b] + 0x400 * EXP_PAGE0);
+			if(inb(io[b] + 0x400 * EXP_PAGE0) != 0x18) {
+				pr_debug("I/O Base 0x%x fails test\n",
+					 io[b] + 0x400 * EXP_PAGE0);
+				continue;
+			}
+		}
+		else {
+			/*
+			 * Yes, probe for I/O Base
+			 */
+			if(probe_exhasted) {
+				pr_debug("All probe addresses exhasted, skipping\n");
+				continue;
+			}
+			pr_debug("Probing for I/O...\n");
+			for (i = last_base ; i <= IOBASE_MAX ; i += IOBASE_OFFSET) {
+				int found_io = 1;
+				if (i == IOBASE_MAX) {
+					probe_exhasted = 1; /* No more addresses to probe */
+					pr_debug("End of Probes\n");
+				}
+				last_base = i + IOBASE_OFFSET;
+				pr_debug("  checking 0x%x...", i);
+				for ( j = 0 ; j < MAX_IO_REGS - 1 ; j++) {
+					if(!request_region(i + j * 0x400, 1, "sc test")) {
+						pr_debug("Failed\n");
+						found_io = 0;
+						break;
+					} else
+						release_region(i + j * 0x400, 1);
+				}	
+
+				if(found_io) {
+					io[b] = i;
+					outb(0x18, io[b] + 0x400 * EXP_PAGE0);
+					if(inb(io[b] + 0x400 * EXP_PAGE0) != 0x18) { 
+						pr_debug("Failed by test\n");
+						continue;
+					}
+					pr_debug("Passed\n");
+					break;
+				}
+			}
+			if(probe_exhasted) {
+				continue;
+			}
+		}
+
+		/*
+		 * See if we should probe for shared RAM
+		 */
+		if(do_reset) {
+			pr_debug("Doing a SAFE probe reset\n");
+			outb(0xFF, io[b] + RESET_OFFSET);
+			msleep_interruptible(10000);
+		}
+		pr_debug("RAM Base for board %d is 0x%lx, %s probe\n", b,
+			ram[b], ram[b] == 0 ? "will" : "won't");
+
+		if(ram[b]) {
+			/*
+			 * No, the RAM base has been provided
+			 * Just look for a signature and ID the
+			 * board model
+			 */
+			if(request_region(ram[b], SRAM_PAGESIZE, "sc test")) {
+				pr_debug("request_region for RAM base 0x%lx succeeded\n", ram[b]);
+			 	model = identify_board(ram[b], io[b]);
+				release_region(ram[b], SRAM_PAGESIZE);
+			}
+		}
+		else {
+			/*
+			 * Yes, probe for free RAM and look for
+			 * a signature and id the board model
+			 */
+			for (i = SRAM_MIN ; i < SRAM_MAX ; i += SRAM_PAGESIZE) {
+				pr_debug("Checking RAM address 0x%x...\n", i);
+				if(request_region(i, SRAM_PAGESIZE, "sc test")) {
+					pr_debug("  request_region succeeded\n");
+					model = identify_board(i, io[b]);
+					release_region(i, SRAM_PAGESIZE);
+					if (model >= 0) {
+						pr_debug("  Identified a %s\n",
+							boardname[model]);
+						ram[b] = i;
+						break;
+					}
+					pr_debug("  Unidentifed or inaccessible\n");
+					continue;
+				}
+				pr_debug("  request failed\n");
+			}
+		}
+		/*
+		 * See if we found free RAM and the board model
+		 */
+		if(!ram[b] || model < 0) {
+			/*
+			 * Nope, there was no place in RAM for the
+			 * board, or it couldn't be identified
+			 */
+			 pr_debug("Failed to find an adapter at 0x%lx\n", ram[b]);
+			 continue;
+		}
+
+		/*
+		 * Set the board's magic number, memory size and page register
+		 */
+		switch(model) {
+		case PRI_BOARD:
+			channels = 23;
+			magic = 0x20000;
+			memsize = 0x100000;
+			features = PRI_FEATURES;
+			break;
+
+		case BRI_BOARD:
+		case POTS_BOARD:
+			channels = 2;
+			magic = 0x60000;
+			memsize = 0x10000;
+			features = BRI_FEATURES;
+			break;
+		}
+		switch(ram[b] >> 12 & 0x0F) {
+		case 0x0:
+			pr_debug("RAM Page register set to EXP_PAGE0\n");
+			pgport = EXP_PAGE0;
+			break;
+
+		case 0x4:
+			pr_debug("RAM Page register set to EXP_PAGE1\n");
+			pgport = EXP_PAGE1;
+			break;
+
+		case 0x8:
+			pr_debug("RAM Page register set to EXP_PAGE2\n");
+			pgport = EXP_PAGE2;
+			break;
+
+		case 0xC:
+			pr_debug("RAM Page register set to EXP_PAGE3\n");
+			pgport = EXP_PAGE3;
+			break;
+
+		default:
+			pr_debug("RAM base address doesn't fall on 16K boundary\n");
+			continue;
+		}
+
+		pr_debug("current IRQ: %d  b: %d\n",irq[b],b);
+
+		/*
+		 * Make sure we got an IRQ
+		 */
+		if(!irq[b]) {
+			/*
+			 * No interrupt could be used
+			 */
+			pr_debug("Failed to acquire an IRQ line\n");
+			continue;
+		}
+
+		/*
+		 * Horray! We found a board, Make sure we can register
+		 * it with ISDN4Linux
+		 */
+		interface = kzalloc(sizeof(isdn_if), GFP_KERNEL);
+		if (interface == NULL) {
+			/*
+			 * Oops, can't malloc isdn_if
+			 */
+			continue;
+		}
+
+		interface->owner = THIS_MODULE;
+		interface->hl_hdrlen = 0;
+		interface->channels = channels;
+		interface->maxbufsize = BUFFER_SIZE;
+		interface->features = features;
+		interface->writebuf_skb = sndpkt;
+		interface->writecmd = NULL;
+		interface->command = command;
+		strcpy(interface->id, devname);
+		interface->id[2] = '0' + cinst;
+
+		/*
+		 * Allocate the board structure
+		 */
+		sc_adapter[cinst] = kzalloc(sizeof(board), GFP_KERNEL);
+		if (sc_adapter[cinst] == NULL) {
+			/*
+			 * Oops, can't alloc memory for the board
+			 */
+			kfree(interface);
+			continue;
+		}
+		spin_lock_init(&sc_adapter[cinst]->lock);
+
+		if(!register_isdn(interface)) {
+			/*
+			 * Oops, couldn't register for some reason
+			 */
+			kfree(interface);
+			kfree(sc_adapter[cinst]);
+			continue;
+		}
+
+		sc_adapter[cinst]->card = interface;
+		sc_adapter[cinst]->driverId = interface->channels;
+		strcpy(sc_adapter[cinst]->devicename, interface->id);
+		sc_adapter[cinst]->nChannels = channels;
+		sc_adapter[cinst]->ramsize = memsize;
+		sc_adapter[cinst]->shmem_magic = magic;
+		sc_adapter[cinst]->shmem_pgport = pgport;
+		sc_adapter[cinst]->StartOnReset = 1;
+
+		/*
+		 * Allocate channels status structures
+		 */
+		sc_adapter[cinst]->channel = kzalloc(sizeof(bchan) * channels, GFP_KERNEL);
+		if (sc_adapter[cinst]->channel == NULL) {
+			/*
+			 * Oops, can't alloc memory for the channels
+			 */
+			indicate_status(cinst, ISDN_STAT_UNLOAD, 0, NULL);	/* Fix me */
+			kfree(interface);
+			kfree(sc_adapter[cinst]);
+			continue;
+		}
+
+		/*
+		 * Lock down the hardware resources
+		 */
+		sc_adapter[cinst]->interrupt = irq[b];
+		if (request_irq(sc_adapter[cinst]->interrupt, interrupt_handler,
+				IRQF_DISABLED, interface->id,
+				(void *)(unsigned long) cinst))
+		{
+			kfree(sc_adapter[cinst]->channel);
+			indicate_status(cinst, ISDN_STAT_UNLOAD, 0, NULL);	/* Fix me */
+			kfree(interface);
+			kfree(sc_adapter[cinst]);
+			continue;
+			
+		}
+		sc_adapter[cinst]->iobase = io[b];
+		for(i = 0 ; i < MAX_IO_REGS - 1 ; i++) {
+			sc_adapter[cinst]->ioport[i] = io[b] + i * 0x400;
+			request_region(sc_adapter[cinst]->ioport[i], 1,
+					interface->id);
+			pr_debug("Requesting I/O Port %#x\n",
+				sc_adapter[cinst]->ioport[i]);
+		}
+		sc_adapter[cinst]->ioport[IRQ_SELECT] = io[b] + 0x2;
+		request_region(sc_adapter[cinst]->ioport[IRQ_SELECT], 1,
+				interface->id);
+		pr_debug("Requesting I/O Port %#x\n",
+				sc_adapter[cinst]->ioport[IRQ_SELECT]);
+		sc_adapter[cinst]->rambase = ram[b];
+		request_region(sc_adapter[cinst]->rambase, SRAM_PAGESIZE,
+				interface->id);
+
+		pr_info("  %s (%d) - %s %d channels IRQ %d, I/O Base 0x%x, RAM Base 0x%lx\n", 
+			sc_adapter[cinst]->devicename,
+			sc_adapter[cinst]->driverId,
+			boardname[model], channels, irq[b], io[b], ram[b]);
+		
+		/*
+		 * reset the adapter to put things in motion
+		 */
+		reset(cinst);
+
+		cinst++;
+		status = 0;
+	}
+	if (status) 
+		pr_info("Failed to find any adapters, driver unloaded\n");
+	return status;
+}
+
+static void __exit sc_exit(void)
+{
+	int i, j;
+
+	for(i = 0 ; i < cinst ; i++) {
+		pr_debug("Cleaning up after adapter %d\n", i);
+		/*
+		 * kill the timers
+		 */
+		del_timer(&(sc_adapter[i]->reset_timer));
+		del_timer(&(sc_adapter[i]->stat_timer));
+
+		/*
+		 * Tell I4L we're toast
+		 */
+		indicate_status(i, ISDN_STAT_STOP, 0, NULL);
+		indicate_status(i, ISDN_STAT_UNLOAD, 0, NULL);
+
+		/*
+		 * Release shared RAM
+		 */
+		release_region(sc_adapter[i]->rambase, SRAM_PAGESIZE);
+
+		/*
+		 * Release the IRQ
+		 */
+		free_irq(sc_adapter[i]->interrupt, NULL);
+
+		/*
+		 * Reset for a clean start
+		 */
+		outb(0xFF, sc_adapter[i]->ioport[SFT_RESET]);
+
+		/*
+		 * Release the I/O Port regions
+		 */
+		for(j = 0 ; j < MAX_IO_REGS - 1; j++) {
+			release_region(sc_adapter[i]->ioport[j], 1);
+			pr_debug("Releasing I/O Port %#x\n",
+				sc_adapter[i]->ioport[j]);
+		}
+		release_region(sc_adapter[i]->ioport[IRQ_SELECT], 1);
+		pr_debug("Releasing I/O Port %#x\n",
+			sc_adapter[i]->ioport[IRQ_SELECT]);
+
+		/*
+		 * Release any memory we alloced
+		 */
+		kfree(sc_adapter[i]->channel);
+		kfree(sc_adapter[i]->card);
+		kfree(sc_adapter[i]);
+	}
+	pr_info("SpellCaster ISA ISDN Adapter Driver Unloaded.\n");
+}
+
+static int identify_board(unsigned long rambase, unsigned int iobase)
+{
+	unsigned int pgport;
+	unsigned long sig;
+	DualPortMemory *dpm;
+	RspMessage rcvmsg;
+	ReqMessage sndmsg;
+	HWConfig_pl hwci;
+	int x;
+
+	pr_debug("Attempting to identify adapter @ 0x%lx io 0x%x\n",
+		rambase, iobase);
+
+	/*
+	 * Enable the base pointer
+	 */
+	outb(rambase >> 12, iobase + 0x2c00);
+
+	switch(rambase >> 12 & 0x0F) {
+	case 0x0:
+		pgport = iobase + PG0_OFFSET;
+		pr_debug("Page Register offset is 0x%x\n", PG0_OFFSET);
+		break;
+		
+	case 0x4:
+		pgport = iobase + PG1_OFFSET;
+		pr_debug("Page Register offset is 0x%x\n", PG1_OFFSET);
+		break;
+
+	case 0x8:
+		pgport = iobase + PG2_OFFSET;
+		pr_debug("Page Register offset is 0x%x\n", PG2_OFFSET);
+		break;
+
+	case 0xC:
+		pgport = iobase + PG3_OFFSET;
+		pr_debug("Page Register offset is 0x%x\n", PG3_OFFSET);
+		break;
+	default:
+		pr_debug("Invalid rambase 0x%lx\n", rambase);
+		return -1;
+	}
+
+	/*
+	 * Try to identify a PRI card
+	 */
+	outb(PRI_BASEPG_VAL, pgport);
+	msleep_interruptible(1000);
+	sig = readl(rambase + SIG_OFFSET);
+	pr_debug("Looking for a signature, got 0x%lx\n", sig);
+	if(sig == SIGNATURE)
+		return PRI_BOARD;
+
+	/*
+	 * Try to identify a PRI card
+	 */
+	outb(BRI_BASEPG_VAL, pgport);
+	msleep_interruptible(1000);
+	sig = readl(rambase + SIG_OFFSET);
+	pr_debug("Looking for a signature, got 0x%lx\n", sig);
+	if(sig == SIGNATURE)
+		return BRI_BOARD;
+
+	return -1;
+
+	/*
+	 * Try to spot a card
+	 */
+	sig = readl(rambase + SIG_OFFSET);
+	pr_debug("Looking for a signature, got 0x%lx\n", sig);
+	if(sig != SIGNATURE)
+		return -1;
+
+	dpm = (DualPortMemory *) rambase;
+
+	memset(&sndmsg, 0, MSG_LEN);
+	sndmsg.msg_byte_cnt = 3;
+	sndmsg.type = cmReqType1;
+	sndmsg.class = cmReqClass0;
+	sndmsg.code = cmReqHWConfig;
+	memcpy_toio(&(dpm->req_queue[dpm->req_head++]), &sndmsg, MSG_LEN);
+	outb(0, iobase + 0x400);
+	pr_debug("Sent HWConfig message\n");
+	/*
+	 * Wait for the response
+	 */
+	x = 0;
+	while((inb(iobase + FIFOSTAT_OFFSET) & RF_HAS_DATA) && x < 100) {
+		schedule_timeout_interruptible(1);
+		x++;
+	}
+	if(x == 100) {
+		pr_debug("Timeout waiting for response\n");
+		return -1;
+	}
+
+	memcpy_fromio(&rcvmsg, &(dpm->rsp_queue[dpm->rsp_tail]), MSG_LEN);
+	pr_debug("Got HWConfig response, status = 0x%x\n", rcvmsg.rsp_status);
+	memcpy(&hwci, &(rcvmsg.msg_data.HWCresponse), sizeof(HWConfig_pl));
+	pr_debug("Hardware Config: Interface: %s, RAM Size: %ld, Serial: %s\n"
+		 "                 Part: %s, Rev: %s\n",
+		 hwci.st_u_sense ? "S/T" : "U", hwci.ram_size,
+		 hwci.serial_no, hwci.part_no, hwci.rev_no);
+
+	if(!strncmp(PRI_PARTNO, hwci.part_no, 6))
+		return PRI_BOARD;
+	if(!strncmp(BRI_PARTNO, hwci.part_no, 6))
+		return BRI_BOARD;
+		
+	return -1;
+}
+
+module_init(sc_init);
+module_exit(sc_exit);
diff --git a/drivers/isdn/sc/interrupt.c b/drivers/isdn/sc/interrupt.c
new file mode 100644
index 00000000..f0225bc0
--- /dev/null
+++ b/drivers/isdn/sc/interrupt.c
@@ -0,0 +1,247 @@
+/* $Id: interrupt.c,v 1.4.8.3 2001/09/23 22:24:59 kai Exp $
+ *
+ * Copyright (C) 1996  SpellCaster Telecommunications Inc.
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * For more information, please contact gpl-info@spellcast.com or write:
+ *
+ *     SpellCaster Telecommunications Inc.
+ *     5621 Finch Avenue East, Unit #3
+ *     Scarborough, Ontario  Canada
+ *     M1B 2T9
+ *     +1 (416) 297-8565
+ *     +1 (416) 297-6433 Facsimile
+ */
+
+#include "includes.h"
+#include "hardware.h"
+#include "message.h"
+#include "card.h"
+#include <linux/interrupt.h>
+
+/*
+ * 
+ */
+irqreturn_t interrupt_handler(int dummy, void *card_inst)
+{
+
+	RspMessage rcvmsg;
+	int channel;
+	int card = (int)(unsigned long) card_inst;
+
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return IRQ_NONE;
+	}
+
+	pr_debug("%s: Entered Interrupt handler\n",
+			sc_adapter[card]->devicename);
+	
+ 	/*
+	 * Pull all of the waiting messages off the response queue
+	 */
+	while (!receivemessage(card, &rcvmsg)) {
+		/*
+		 * Push the message to the adapter structure for
+		 * send_and_receive to snoop
+		 */
+		if(sc_adapter[card]->want_async_messages)
+			memcpy(&(sc_adapter[card]->async_msg),
+					&rcvmsg, sizeof(RspMessage));
+
+		channel = (unsigned int) rcvmsg.phy_link_no;
+		
+		/*
+		 * Trap Invalid request messages
+		 */
+		if(IS_CM_MESSAGE(rcvmsg, 0, 0, Invalid)) {
+			pr_debug("%s: Invalid request Message, rsp_status = %d\n", 
+				sc_adapter[card]->devicename,
+				rcvmsg.rsp_status);
+			break;	
+		}
+		
+		/*
+		 * Check for a linkRead message
+		 */
+		if (IS_CE_MESSAGE(rcvmsg, Lnk, 1, Read))
+		{
+			pr_debug("%s: Received packet 0x%x bytes long at 0x%lx\n",
+						sc_adapter[card]->devicename,
+						rcvmsg.msg_data.response.msg_len,
+						rcvmsg.msg_data.response.buff_offset);
+			rcvpkt(card, &rcvmsg);
+			continue;
+
+		}
+
+		/*
+		 * Handle a write acknoledgement
+		 */
+		if(IS_CE_MESSAGE(rcvmsg, Lnk, 1, Write)) {
+			pr_debug("%s: Packet Send ACK on channel %d\n",
+				sc_adapter[card]->devicename,
+				rcvmsg.phy_link_no);
+			sc_adapter[card]->channel[rcvmsg.phy_link_no-1].free_sendbufs++;
+			continue;
+		}
+
+		/*
+		 * Handle a connection message
+		 */
+		if (IS_CE_MESSAGE(rcvmsg, Phy, 1, Connect)) 
+		{
+			unsigned int callid;
+			setup_parm setup;	
+			pr_debug("%s: Connect message: line %d: status %d: cause 0x%x\n",
+						sc_adapter[card]->devicename,
+						rcvmsg.phy_link_no,
+						rcvmsg.rsp_status,
+						rcvmsg.msg_data.byte_array[2]);
+			
+			memcpy(&callid,rcvmsg.msg_data.byte_array,sizeof(int));
+			if(callid>=0x8000 && callid<=0xFFFF)
+			{		
+				pr_debug("%s: Got Dial-Out Rsp\n",
+					sc_adapter[card]->devicename);
+				indicate_status(card, ISDN_STAT_DCONN,
+						(unsigned long)rcvmsg.phy_link_no-1,NULL);
+				
+			}
+			else if(callid>=0x0000 && callid<=0x7FFF)
+			{
+				int len;
+
+				pr_debug("%s: Got Incoming Call\n",
+						sc_adapter[card]->devicename);
+				len = strlcpy(setup.phone, &(rcvmsg.msg_data.byte_array[4]),
+						sizeof(setup.phone));
+				if (len >= sizeof(setup.phone))
+					continue;
+				len = strlcpy(setup.eazmsn,
+						sc_adapter[card]->channel[rcvmsg.phy_link_no - 1].dn,
+						sizeof(setup.eazmsn));
+				if (len >= sizeof(setup.eazmsn))
+					continue;
+				setup.si1 = 7;
+				setup.si2 = 0;
+				setup.plan = 0;
+				setup.screen = 0;
+
+				indicate_status(card, ISDN_STAT_ICALL,(unsigned long)rcvmsg.phy_link_no-1,(char *)&setup);
+				indicate_status(card, ISDN_STAT_DCONN,(unsigned long)rcvmsg.phy_link_no-1,NULL);
+			}
+			continue;
+		}
+
+		/*
+		 * Handle a disconnection message
+		 */
+		if (IS_CE_MESSAGE(rcvmsg, Phy, 1, Disconnect)) 
+		{
+			pr_debug("%s: disconnect message: line %d: status %d: cause 0x%x\n",
+						sc_adapter[card]->devicename,
+						rcvmsg.phy_link_no,
+						rcvmsg.rsp_status,
+					 	rcvmsg.msg_data.byte_array[2]);
+
+			indicate_status(card, ISDN_STAT_BHUP,(unsigned long)rcvmsg.phy_link_no-1,NULL);
+			indicate_status(card, ISDN_STAT_DHUP,(unsigned long)rcvmsg.phy_link_no-1,NULL);
+			continue;
+
+		}
+
+		/*
+		 * Handle a startProc engine up message
+		 */
+		if (IS_CM_MESSAGE(rcvmsg, 5, 0, MiscEngineUp)) {
+			pr_debug("%s: Received EngineUp message\n",
+				sc_adapter[card]->devicename);
+			sc_adapter[card]->EngineUp = 1;
+			sendmessage(card, CEPID,ceReqTypeCall,ceReqClass0,ceReqCallGetMyNumber,1,0,NULL);
+			sendmessage(card, CEPID,ceReqTypeCall,ceReqClass0,ceReqCallGetMyNumber,2,0,NULL);
+			init_timer(&sc_adapter[card]->stat_timer);
+			sc_adapter[card]->stat_timer.function = check_phystat;
+			sc_adapter[card]->stat_timer.data = card;
+			sc_adapter[card]->stat_timer.expires = jiffies + CHECKSTAT_TIME;
+			add_timer(&sc_adapter[card]->stat_timer);
+			continue;
+		}
+
+		/*
+		 * Start proc response
+		 */
+		if (IS_CM_MESSAGE(rcvmsg, 2, 0, StartProc)) {
+			pr_debug("%s: StartProc Response Status %d\n",
+				sc_adapter[card]->devicename,
+				rcvmsg.rsp_status);
+			continue;
+		}
+
+		/*
+		 * Handle a GetMyNumber Rsp
+		 */
+		if (IS_CE_MESSAGE(rcvmsg,Call,0,GetMyNumber)){
+			strlcpy(sc_adapter[card]->channel[rcvmsg.phy_link_no - 1].dn,
+				rcvmsg.msg_data.byte_array,
+				sizeof(rcvmsg.msg_data.byte_array));
+			continue;
+		}
+			
+		/*
+		 * PhyStatus response
+		 */
+		if(IS_CE_MESSAGE(rcvmsg, Phy, 2, Status)) {
+			unsigned int b1stat, b2stat;
+
+			/*
+			 * Covert the message data to the adapter->phystat code
+			 */
+			b1stat = (unsigned int) rcvmsg.msg_data.byte_array[0];
+			b2stat = (unsigned int) rcvmsg.msg_data.byte_array[1];
+
+			sc_adapter[card]->nphystat = (b2stat >> 8) | b1stat; /* endian?? */
+			pr_debug("%s: PhyStat is 0x%2x\n",
+				sc_adapter[card]->devicename,
+				sc_adapter[card]->nphystat);
+			continue;
+		}
+
+
+		/* 
+		 * Handle a GetFramFormat
+		 */
+		if(IS_CE_MESSAGE(rcvmsg, Call, 0, GetFrameFormat)) {
+			if(rcvmsg.msg_data.byte_array[0] != HDLC_PROTO) {
+				unsigned int proto = HDLC_PROTO;
+				/*
+				 * Set board format to HDLC if it wasn't already
+				 */
+				pr_debug("%s: current frame format: 0x%x, will change to HDLC\n",
+						sc_adapter[card]->devicename,
+					rcvmsg.msg_data.byte_array[0]);
+				sendmessage(card, CEPID, ceReqTypeCall,
+						ceReqClass0,
+						ceReqCallSetFrameFormat,
+						(unsigned char) channel +1,
+						1,&proto);
+				}
+			continue;
+		}
+
+		/*
+		 * Hmm...
+		 */
+		pr_debug("%s: Received unhandled message (%d,%d,%d) link %d\n",
+			sc_adapter[card]->devicename,
+			rcvmsg.type, rcvmsg.class, rcvmsg.code,
+			rcvmsg.phy_link_no);
+
+	}	/* while */
+
+	pr_debug("%s: Exiting Interrupt Handler\n",
+			sc_adapter[card]->devicename);
+	return IRQ_HANDLED;
+}
diff --git a/drivers/isdn/sc/ioctl.c b/drivers/isdn/sc/ioctl.c
new file mode 100644
index 00000000..4cfdbe08
--- /dev/null
+++ b/drivers/isdn/sc/ioctl.c
@@ -0,0 +1,582 @@
+/*
+ * Copyright (C) 1996  SpellCaster Telecommunications Inc.
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ */
+
+#include "includes.h"
+#include "hardware.h"
+#include "message.h"
+#include "card.h"
+#include "scioc.h"
+
+static int GetStatus(int card, boardInfo *);
+
+/*
+ * Process private IOCTL messages (typically from scctrl)
+ */
+int sc_ioctl(int card, scs_ioctl *data)
+{
+	int		status;
+	RspMessage	*rcvmsg;
+	char		*spid;
+	char		*dn;
+	char		switchtype;
+	char		speed;
+
+	rcvmsg = kmalloc(sizeof(RspMessage), GFP_KERNEL);
+	if (!rcvmsg)
+		return -ENOMEM;
+
+	switch(data->command) {
+	case SCIOCRESET:	/* Perform a hard reset of the adapter */
+	{
+		pr_debug("%s: SCIOCRESET: ioctl received\n",
+			sc_adapter[card]->devicename);
+		sc_adapter[card]->StartOnReset = 0;
+		kfree(rcvmsg);
+		return reset(card);
+	}
+
+	case SCIOCLOAD:
+	{
+		char *srec;
+
+		srec = kmalloc(SCIOC_SRECSIZE, GFP_KERNEL);
+		if (!srec) {
+			kfree(rcvmsg);
+			return -ENOMEM;
+		}
+		pr_debug("%s: SCIOLOAD: ioctl received\n",
+				sc_adapter[card]->devicename);
+		if(sc_adapter[card]->EngineUp) {
+			pr_debug("%s: SCIOCLOAD: command failed, LoadProc while engine running.\n",
+				sc_adapter[card]->devicename);
+			kfree(rcvmsg);
+			kfree(srec);
+			return -1;
+		}
+
+		/*
+		 * Get the SRec from user space
+		 */
+		if (copy_from_user(srec, data->dataptr, SCIOC_SRECSIZE)) {
+			kfree(rcvmsg);
+			kfree(srec);
+			return -EFAULT;
+		}
+
+		status = send_and_receive(card, CMPID, cmReqType2, cmReqClass0, cmReqLoadProc,
+				0, SCIOC_SRECSIZE, srec, rcvmsg, SAR_TIMEOUT);
+		kfree(rcvmsg);
+		kfree(srec);
+
+		if(status) {
+			pr_debug("%s: SCIOCLOAD: command failed, status = %d\n", 
+				sc_adapter[card]->devicename, status);
+			return -1;
+		}
+		else {
+			pr_debug("%s: SCIOCLOAD: command successful\n",
+					sc_adapter[card]->devicename);
+			return 0;
+		}
+	}
+
+	case SCIOCSTART:
+	{
+		kfree(rcvmsg);
+		pr_debug("%s: SCIOSTART: ioctl received\n",
+				sc_adapter[card]->devicename);
+		if(sc_adapter[card]->EngineUp) {
+			pr_debug("%s: SCIOCSTART: command failed, engine already running.\n",
+				sc_adapter[card]->devicename);
+			return -1;
+		}
+
+		sc_adapter[card]->StartOnReset = 1;
+		startproc(card);
+		return 0;
+	}
+
+	case SCIOCSETSWITCH:
+	{
+		pr_debug("%s: SCIOSETSWITCH: ioctl received\n",
+				sc_adapter[card]->devicename);
+
+		/*
+		 * Get the switch type from user space
+		 */
+		if (copy_from_user(&switchtype, data->dataptr, sizeof(char))) {
+			kfree(rcvmsg);
+			return -EFAULT;
+		}
+
+		pr_debug("%s: SCIOCSETSWITCH: setting switch type to %d\n",
+			sc_adapter[card]->devicename,
+			switchtype);
+		status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0, ceReqCallSetSwitchType,
+						0, sizeof(char),&switchtype, rcvmsg, SAR_TIMEOUT);
+		if(!status && !(rcvmsg->rsp_status)) {
+			pr_debug("%s: SCIOCSETSWITCH: command successful\n",
+				sc_adapter[card]->devicename);
+			kfree(rcvmsg);
+			return 0;
+		}
+		else {
+			pr_debug("%s: SCIOCSETSWITCH: command failed (status = %d)\n",
+				sc_adapter[card]->devicename, status);
+			kfree(rcvmsg);
+			return status;
+		}
+	}
+		
+	case SCIOCGETSWITCH:
+	{
+		pr_debug("%s: SCIOGETSWITCH: ioctl received\n",
+				sc_adapter[card]->devicename);
+
+		/*
+		 * Get the switch type from the board
+		 */
+		status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0, 
+			ceReqCallGetSwitchType, 0, 0, NULL, rcvmsg, SAR_TIMEOUT);
+		if (!status && !(rcvmsg->rsp_status)) {
+			pr_debug("%s: SCIOCGETSWITCH: command successful\n",
+					sc_adapter[card]->devicename);
+		}
+		else {
+			pr_debug("%s: SCIOCGETSWITCH: command failed (status = %d)\n",
+				sc_adapter[card]->devicename, status);
+			kfree(rcvmsg);
+			return status;
+		}
+
+		switchtype = rcvmsg->msg_data.byte_array[0];
+
+		/*
+		 * Package the switch type and send to user space
+		 */
+		if (copy_to_user(data->dataptr, &switchtype,
+				 sizeof(char))) {
+			kfree(rcvmsg);
+			return -EFAULT;
+		}
+
+		kfree(rcvmsg);
+		return 0;
+	}
+
+	case SCIOCGETSPID:
+	{
+		pr_debug("%s: SCIOGETSPID: ioctl received\n",
+				sc_adapter[card]->devicename);
+
+		spid = kzalloc(SCIOC_SPIDSIZE, GFP_KERNEL);
+		if (!spid) {
+			kfree(rcvmsg);
+			return -ENOMEM;
+		}
+		/*
+		 * Get the spid from the board
+		 */
+		status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0, ceReqCallGetSPID,
+					data->channel, 0, NULL, rcvmsg, SAR_TIMEOUT);
+		if (!status) {
+			pr_debug("%s: SCIOCGETSPID: command successful\n",
+					sc_adapter[card]->devicename);
+		} else {
+			pr_debug("%s: SCIOCGETSPID: command failed (status = %d)\n",
+				sc_adapter[card]->devicename, status);
+			kfree(spid);
+			kfree(rcvmsg);
+			return status;
+		}
+		strlcpy(spid, rcvmsg->msg_data.byte_array, SCIOC_SPIDSIZE);
+
+		/*
+		 * Package the switch type and send to user space
+		 */
+		if (copy_to_user(data->dataptr, spid, SCIOC_SPIDSIZE)) {
+			kfree(spid);
+			kfree(rcvmsg);
+			return -EFAULT;
+		}
+
+		kfree(spid);
+		kfree(rcvmsg);
+		return 0;
+	}	
+
+	case SCIOCSETSPID:
+	{
+		pr_debug("%s: DCBIOSETSPID: ioctl received\n",
+				sc_adapter[card]->devicename);
+
+		/*
+		 * Get the spid from user space
+		 */
+		spid = memdup_user(data->dataptr, SCIOC_SPIDSIZE);
+		if (IS_ERR(spid)) {
+			kfree(rcvmsg);
+			return PTR_ERR(spid);
+		}
+
+		pr_debug("%s: SCIOCSETSPID: setting channel %d spid to %s\n", 
+			sc_adapter[card]->devicename, data->channel, spid);
+		status = send_and_receive(card, CEPID, ceReqTypeCall, 
+			ceReqClass0, ceReqCallSetSPID, data->channel, 
+			strlen(spid), spid, rcvmsg, SAR_TIMEOUT);
+		if(!status && !(rcvmsg->rsp_status)) {
+			pr_debug("%s: SCIOCSETSPID: command successful\n", 
+				sc_adapter[card]->devicename);
+			kfree(rcvmsg);
+			kfree(spid);
+			return 0;
+		}
+		else {
+			pr_debug("%s: SCIOCSETSPID: command failed (status = %d)\n",
+				sc_adapter[card]->devicename, status);
+			kfree(rcvmsg);
+			kfree(spid);
+			return status;
+		}
+	}
+
+	case SCIOCGETDN:
+	{
+		pr_debug("%s: SCIOGETDN: ioctl received\n",
+				sc_adapter[card]->devicename);
+
+		/*
+		 * Get the dn from the board
+		 */
+		status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0, ceReqCallGetMyNumber,
+					data->channel, 0, NULL, rcvmsg, SAR_TIMEOUT);
+		if (!status) {
+			pr_debug("%s: SCIOCGETDN: command successful\n",
+					sc_adapter[card]->devicename);
+		}
+		else {
+			pr_debug("%s: SCIOCGETDN: command failed (status = %d)\n",
+				sc_adapter[card]->devicename, status);
+			kfree(rcvmsg);
+			return status;
+		}
+
+		dn = kzalloc(SCIOC_DNSIZE, GFP_KERNEL);
+		if (!dn) {
+			kfree(rcvmsg);
+			return -ENOMEM;
+		}
+		strlcpy(dn, rcvmsg->msg_data.byte_array, SCIOC_DNSIZE);
+		kfree(rcvmsg);
+
+		/*
+		 * Package the dn and send to user space
+		 */
+		if (copy_to_user(data->dataptr, dn, SCIOC_DNSIZE)) {
+			kfree(dn);
+			return -EFAULT;
+		}
+		kfree(dn);
+		return 0;
+	}	
+
+	case SCIOCSETDN:
+	{
+		pr_debug("%s: SCIOSETDN: ioctl received\n",
+				sc_adapter[card]->devicename);
+
+		/*
+		 * Get the spid from user space
+		 */
+		dn = memdup_user(data->dataptr, SCIOC_DNSIZE);
+		if (IS_ERR(dn)) {
+			kfree(rcvmsg);
+			return PTR_ERR(dn);
+		}
+
+		pr_debug("%s: SCIOCSETDN: setting channel %d dn to %s\n", 
+			sc_adapter[card]->devicename, data->channel, dn);
+		status = send_and_receive(card, CEPID, ceReqTypeCall, 
+			ceReqClass0, ceReqCallSetMyNumber, data->channel, 
+			strlen(dn),dn,rcvmsg, SAR_TIMEOUT);
+		if(!status && !(rcvmsg->rsp_status)) {
+			pr_debug("%s: SCIOCSETDN: command successful\n", 
+				sc_adapter[card]->devicename);
+			kfree(rcvmsg);
+			kfree(dn);
+			return 0;
+		}
+		else {
+			pr_debug("%s: SCIOCSETDN: command failed (status = %d)\n",
+				sc_adapter[card]->devicename, status);
+			kfree(rcvmsg);
+			kfree(dn);
+			return status;
+		}
+	}
+
+	case SCIOCTRACE:
+
+		pr_debug("%s: SCIOTRACE: ioctl received\n",
+				sc_adapter[card]->devicename);
+/*		sc_adapter[card]->trace = !sc_adapter[card]->trace;
+		pr_debug("%s: SCIOCTRACE: tracing turned %s\n",
+				sc_adapter[card]->devicename,
+			sc_adapter[card]->trace ? "ON" : "OFF"); */
+		break;
+
+	case SCIOCSTAT:
+	{
+		boardInfo *bi;
+
+		pr_debug("%s: SCIOSTAT: ioctl received\n",
+				sc_adapter[card]->devicename);
+
+		bi = kzalloc(sizeof(boardInfo), GFP_KERNEL);
+		if (!bi) {
+			kfree(rcvmsg);
+			return -ENOMEM;
+		}
+
+		kfree(rcvmsg);
+		GetStatus(card, bi);
+
+		if (copy_to_user(data->dataptr, bi, sizeof(boardInfo))) {
+			kfree(bi);
+			return -EFAULT;
+		}
+
+		kfree(bi);
+		return 0;
+	}
+
+	case SCIOCGETSPEED:
+	{
+		pr_debug("%s: SCIOGETSPEED: ioctl received\n",
+				sc_adapter[card]->devicename);
+
+		/*
+		 * Get the speed from the board
+		 */
+		status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0, 
+			ceReqCallGetCallType, data->channel, 0, NULL, rcvmsg, SAR_TIMEOUT);
+		if (!status && !(rcvmsg->rsp_status)) {
+			pr_debug("%s: SCIOCGETSPEED: command successful\n",
+				sc_adapter[card]->devicename);
+		}
+		else {
+			pr_debug("%s: SCIOCGETSPEED: command failed (status = %d)\n",
+				sc_adapter[card]->devicename, status);
+			kfree(rcvmsg);
+			return status;
+		}
+
+		speed = rcvmsg->msg_data.byte_array[0];
+
+		kfree(rcvmsg);
+
+		/*
+		 * Package the switch type and send to user space
+		 */
+
+		if (copy_to_user(data->dataptr, &speed, sizeof(char)))
+			return -EFAULT;
+
+		return 0;
+	}
+
+	case SCIOCSETSPEED:
+		pr_debug("%s: SCIOCSETSPEED: ioctl received\n",
+				sc_adapter[card]->devicename);
+		break;
+
+	case SCIOCLOOPTST:
+		pr_debug("%s: SCIOCLOOPTST: ioctl received\n",
+				sc_adapter[card]->devicename);
+		break;
+
+	default:
+		kfree(rcvmsg);
+		return -1;
+	}
+
+	kfree(rcvmsg);
+	return 0;
+}
+
+static int GetStatus(int card, boardInfo *bi)
+{
+	RspMessage rcvmsg;
+	int i, status;
+
+	/*
+	 * Fill in some of the basic info about the board
+	 */
+	bi->modelid = sc_adapter[card]->model;
+	strcpy(bi->serial_no, sc_adapter[card]->hwconfig.serial_no);
+	strcpy(bi->part_no, sc_adapter[card]->hwconfig.part_no);
+	bi->iobase = sc_adapter[card]->iobase;
+	bi->rambase = sc_adapter[card]->rambase;
+	bi->irq = sc_adapter[card]->interrupt;
+	bi->ramsize = sc_adapter[card]->hwconfig.ram_size;
+	bi->interface = sc_adapter[card]->hwconfig.st_u_sense;
+	strcpy(bi->load_ver, sc_adapter[card]->load_ver);
+	strcpy(bi->proc_ver, sc_adapter[card]->proc_ver);
+
+	/*
+	 * Get the current PhyStats and LnkStats
+	 */
+	status = send_and_receive(card, CEPID, ceReqTypePhy, ceReqClass2,
+		ceReqPhyStatus, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
+	if(!status) {
+		if(sc_adapter[card]->model < PRI_BOARD) {
+			bi->l1_status = rcvmsg.msg_data.byte_array[2];
+			for(i = 0 ; i < BRI_CHANNELS ; i++)
+				bi->status.bristats[i].phy_stat =
+					rcvmsg.msg_data.byte_array[i];
+		}
+		else {
+			bi->l1_status = rcvmsg.msg_data.byte_array[0];
+			bi->l2_status = rcvmsg.msg_data.byte_array[1];
+			for(i = 0 ; i < PRI_CHANNELS ; i++)
+				bi->status.pristats[i].phy_stat = 
+					rcvmsg.msg_data.byte_array[i+2];
+		}
+	}
+	
+	/*
+	 * Get the call types for each channel
+	 */
+	for (i = 0 ; i < sc_adapter[card]->nChannels ; i++) {
+		status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0,
+			ceReqCallGetCallType, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
+		if(!status) {
+			if (sc_adapter[card]->model == PRI_BOARD) {
+				bi->status.pristats[i].call_type = 
+					rcvmsg.msg_data.byte_array[0];
+			}
+			else {
+				bi->status.bristats[i].call_type =
+					rcvmsg.msg_data.byte_array[0];
+			}
+		}
+	}
+	
+	/*
+	 * If PRI, get the call states and service states for each channel
+	 */
+	if (sc_adapter[card]->model == PRI_BOARD) {
+		/*
+		 * Get the call states
+		 */
+		status = send_and_receive(card, CEPID, ceReqTypeStat, ceReqClass2,
+			ceReqPhyChCallState, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
+		if(!status) {
+			for( i = 0 ; i < PRI_CHANNELS ; i++ )
+				bi->status.pristats[i].call_state = 
+					rcvmsg.msg_data.byte_array[i];
+		}
+
+		/*
+		 * Get the service states
+		 */
+		status = send_and_receive(card, CEPID, ceReqTypeStat, ceReqClass2,
+			ceReqPhyChServState, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
+		if(!status) {
+			for( i = 0 ; i < PRI_CHANNELS ; i++ )
+				bi->status.pristats[i].serv_state = 
+					rcvmsg.msg_data.byte_array[i];
+		}
+
+		/*
+		 * Get the link stats for the channels
+		 */
+		for (i = 1 ; i <= PRI_CHANNELS ; i++) {
+			status = send_and_receive(card, CEPID, ceReqTypeLnk, ceReqClass0,
+				ceReqLnkGetStats, i, 0, NULL, &rcvmsg, SAR_TIMEOUT);
+			if (!status) {
+				bi->status.pristats[i-1].link_stats.tx_good =
+					(unsigned long)rcvmsg.msg_data.byte_array[0];
+				bi->status.pristats[i-1].link_stats.tx_bad =
+					(unsigned long)rcvmsg.msg_data.byte_array[4];
+				bi->status.pristats[i-1].link_stats.rx_good =
+					(unsigned long)rcvmsg.msg_data.byte_array[8];
+				bi->status.pristats[i-1].link_stats.rx_bad =
+					(unsigned long)rcvmsg.msg_data.byte_array[12];
+			}
+		}
+
+		/*
+		 * Link stats for the D channel
+		 */
+		status = send_and_receive(card, CEPID, ceReqTypeLnk, ceReqClass0,
+			ceReqLnkGetStats, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
+		if (!status) {
+			bi->dch_stats.tx_good = (unsigned long)rcvmsg.msg_data.byte_array[0];
+			bi->dch_stats.tx_bad = (unsigned long)rcvmsg.msg_data.byte_array[4];
+			bi->dch_stats.rx_good = (unsigned long)rcvmsg.msg_data.byte_array[8];
+			bi->dch_stats.rx_bad = (unsigned long)rcvmsg.msg_data.byte_array[12];
+		}
+
+		return 0;
+	}
+
+	/*
+	 * If BRI or POTS, Get SPID, DN and call types for each channel
+	 */
+
+	/*
+	 * Get the link stats for the channels
+	 */
+	status = send_and_receive(card, CEPID, ceReqTypeLnk, ceReqClass0,
+		ceReqLnkGetStats, 0, 0, NULL, &rcvmsg, SAR_TIMEOUT);
+	if (!status) {
+		bi->dch_stats.tx_good = (unsigned long)rcvmsg.msg_data.byte_array[0];
+		bi->dch_stats.tx_bad = (unsigned long)rcvmsg.msg_data.byte_array[4];
+		bi->dch_stats.rx_good = (unsigned long)rcvmsg.msg_data.byte_array[8];
+		bi->dch_stats.rx_bad = (unsigned long)rcvmsg.msg_data.byte_array[12];
+		bi->status.bristats[0].link_stats.tx_good = 
+			(unsigned long)rcvmsg.msg_data.byte_array[16];
+		bi->status.bristats[0].link_stats.tx_bad = 
+			(unsigned long)rcvmsg.msg_data.byte_array[20];
+		bi->status.bristats[0].link_stats.rx_good = 
+			(unsigned long)rcvmsg.msg_data.byte_array[24];
+		bi->status.bristats[0].link_stats.rx_bad = 
+			(unsigned long)rcvmsg.msg_data.byte_array[28];
+		bi->status.bristats[1].link_stats.tx_good = 
+			(unsigned long)rcvmsg.msg_data.byte_array[32];
+		bi->status.bristats[1].link_stats.tx_bad = 
+			(unsigned long)rcvmsg.msg_data.byte_array[36];
+		bi->status.bristats[1].link_stats.rx_good = 
+			(unsigned long)rcvmsg.msg_data.byte_array[40];
+		bi->status.bristats[1].link_stats.rx_bad = 
+			(unsigned long)rcvmsg.msg_data.byte_array[44];
+	}
+
+	/*
+	 * Get the SPIDs
+	 */
+	for (i = 0 ; i < BRI_CHANNELS ; i++) {
+		status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0,
+			ceReqCallGetSPID, i+1, 0, NULL, &rcvmsg, SAR_TIMEOUT);
+		if (!status)
+			strcpy(bi->status.bristats[i].spid, rcvmsg.msg_data.byte_array);
+	}
+		
+	/*
+	 * Get the DNs
+	 */
+	for (i = 0 ; i < BRI_CHANNELS ; i++) {
+		status = send_and_receive(card, CEPID, ceReqTypeCall, ceReqClass0,
+			ceReqCallGetMyNumber, i+1, 0, NULL, &rcvmsg, SAR_TIMEOUT);
+		if (!status)
+			strcpy(bi->status.bristats[i].dn, rcvmsg.msg_data.byte_array);
+	}
+		
+	return 0;
+}
diff --git a/drivers/isdn/sc/message.c b/drivers/isdn/sc/message.c
new file mode 100644
index 00000000..0b4c4f15
--- /dev/null
+++ b/drivers/isdn/sc/message.c
@@ -0,0 +1,230 @@
+/* $Id: message.c,v 1.5.8.2 2001/09/23 22:24:59 kai Exp $
+ *
+ * functions for sending and receiving control messages
+ *
+ * Copyright (C) 1996  SpellCaster Telecommunications Inc.
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * For more information, please contact gpl-info@spellcast.com or write:
+ *
+ *     SpellCaster Telecommunications Inc.
+ *     5621 Finch Avenue East, Unit #3
+ *     Scarborough, Ontario  Canada
+ *     M1B 2T9
+ *     +1 (416) 297-8565
+ *     +1 (416) 297-6433 Facsimile
+ */
+#include <linux/sched.h>
+#include "includes.h"
+#include "hardware.h"
+#include "message.h"
+#include "card.h"
+
+/*
+ * receive a message from the board
+ */
+int receivemessage(int card, RspMessage *rspmsg) 
+{
+	DualPortMemory *dpm;
+	unsigned long flags;
+
+	if (!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return -EINVAL;
+	}
+	
+	pr_debug("%s: Entered receivemessage\n",
+			sc_adapter[card]->devicename);
+
+	/*
+	 * See if there are messages waiting
+	 */
+	if (inb(sc_adapter[card]->ioport[FIFO_STATUS]) & RF_HAS_DATA) {
+		/*
+		 * Map in the DPM to the base page and copy the message
+		 */
+		spin_lock_irqsave(&sc_adapter[card]->lock, flags);
+		outb((sc_adapter[card]->shmem_magic >> 14) | 0x80,
+			sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport]);
+		dpm = (DualPortMemory *) sc_adapter[card]->rambase;
+		memcpy_fromio(rspmsg, &(dpm->rsp_queue[dpm->rsp_tail]), 
+			MSG_LEN);
+		dpm->rsp_tail = (dpm->rsp_tail+1) % MAX_MESSAGES;
+		inb(sc_adapter[card]->ioport[FIFO_READ]);
+		spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
+		/*
+		 * Tell the board that the message is received
+		 */
+		pr_debug("%s: Received Message seq:%d pid:%d time:%d cmd:%d "
+				"cnt:%d (type,class,code):(%d,%d,%d) "
+				"link:%d stat:0x%x\n",
+					sc_adapter[card]->devicename,
+					rspmsg->sequence_no,
+					rspmsg->process_id,
+					rspmsg->time_stamp,
+					rspmsg->cmd_sequence_no,
+					rspmsg->msg_byte_cnt,
+					rspmsg->type,
+					rspmsg->class,
+					rspmsg->code,
+					rspmsg->phy_link_no, 
+					rspmsg->rsp_status);
+
+		return 0;
+	}
+	return -ENOMSG;
+}
+	
+/*
+ * send a message to the board
+ */
+int sendmessage(int card,
+		unsigned int procid,
+		unsigned int type, 
+		unsigned int class, 
+		unsigned int code,
+		unsigned int link, 
+		unsigned int data_len, 
+		unsigned int *data) 
+{
+	DualPortMemory *dpm;
+	ReqMessage sndmsg;
+	unsigned long flags;
+
+	if (!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return -EINVAL;
+	}
+
+	/*
+	 * Make sure we only send CEPID messages when the engine is up
+	 * and CMPID messages when it is down
+	 */
+	if(sc_adapter[card]->EngineUp && procid == CMPID) {
+		pr_debug("%s: Attempt to send CM message with engine up\n",
+			sc_adapter[card]->devicename);
+		return -ESRCH;
+	}
+
+	if(!sc_adapter[card]->EngineUp && procid == CEPID) {
+		pr_debug("%s: Attempt to send CE message with engine down\n",
+			sc_adapter[card]->devicename);
+		return -ESRCH;
+	}
+
+	memset(&sndmsg, 0, MSG_LEN);
+	sndmsg.msg_byte_cnt = 4;
+	sndmsg.type = type;
+	sndmsg.class = class;
+	sndmsg.code = code;
+	sndmsg.phy_link_no = link;
+
+	if (data_len > 0) {
+		if (data_len > MSG_DATA_LEN)
+			data_len = MSG_DATA_LEN;
+		memcpy(&(sndmsg.msg_data), data, data_len);
+		sndmsg.msg_byte_cnt = data_len + 8;
+	}
+
+	sndmsg.process_id = procid;
+	sndmsg.sequence_no = sc_adapter[card]->seq_no++ % 256;
+
+	/*
+	 * wait for an empty slot in the queue
+	 */
+	while (!(inb(sc_adapter[card]->ioport[FIFO_STATUS]) & WF_NOT_FULL))
+		udelay(1);
+
+	/*
+	 * Disable interrupts and map in shared memory
+	 */
+	spin_lock_irqsave(&sc_adapter[card]->lock, flags);
+	outb((sc_adapter[card]->shmem_magic >> 14) | 0x80,
+		sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport]);
+	dpm = (DualPortMemory *) sc_adapter[card]->rambase;	/* Fix me */
+	memcpy_toio(&(dpm->req_queue[dpm->req_head]),&sndmsg,MSG_LEN);
+	dpm->req_head = (dpm->req_head+1) % MAX_MESSAGES;
+	outb(sndmsg.sequence_no, sc_adapter[card]->ioport[FIFO_WRITE]);
+	spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
+		
+	pr_debug("%s: Sent Message seq:%d pid:%d time:%d "
+			"cnt:%d (type,class,code):(%d,%d,%d) "
+			"link:%d\n ",
+				sc_adapter[card]->devicename,
+				sndmsg.sequence_no,
+				sndmsg.process_id,
+				sndmsg.time_stamp,
+				sndmsg.msg_byte_cnt,
+				sndmsg.type,
+				sndmsg.class,
+				sndmsg.code,
+				sndmsg.phy_link_no); 
+		
+	return 0;
+}
+
+int send_and_receive(int card,
+		unsigned int procid, 
+		unsigned char type,
+		unsigned char class, 
+		unsigned char code,
+		unsigned char link,
+	 	unsigned char data_len, 
+		unsigned char *data, 
+		RspMessage *mesgdata,
+		int timeout) 
+{
+	int retval;
+	int tries;
+
+	if (!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return -EINVAL;
+	}
+
+	sc_adapter[card]->want_async_messages = 1;
+	retval = sendmessage(card, procid, type, class, code, link, 
+			data_len, (unsigned int *) data);
+  
+	if (retval) {
+		pr_debug("%s: SendMessage failed in SAR\n",
+			sc_adapter[card]->devicename);
+		sc_adapter[card]->want_async_messages = 0;
+		return -EIO;
+	}
+
+	tries = 0;
+	/* wait for the response */
+	while (tries < timeout) {
+		schedule_timeout_interruptible(1);
+		
+		pr_debug("SAR waiting..\n");
+
+		/*
+		 * See if we got our message back
+		 */
+		if ((sc_adapter[card]->async_msg.type == type) &&
+		    (sc_adapter[card]->async_msg.class == class) &&
+		    (sc_adapter[card]->async_msg.code == code) &&
+		    (sc_adapter[card]->async_msg.phy_link_no == link)) {
+
+			/*
+			 * Got it!
+			 */
+			pr_debug("%s: Got ASYNC message\n",
+				sc_adapter[card]->devicename);
+			memcpy(mesgdata, &(sc_adapter[card]->async_msg),
+				sizeof(RspMessage));
+			sc_adapter[card]->want_async_messages = 0;
+			return 0;
+		}
+
+   		tries++;
+	}
+
+	pr_debug("%s: SAR message timeout\n", sc_adapter[card]->devicename);
+	sc_adapter[card]->want_async_messages = 0;
+	return -ETIME;
+}
diff --git a/drivers/isdn/sc/message.h b/drivers/isdn/sc/message.h
new file mode 100644
index 00000000..8eb15e73
--- /dev/null
+++ b/drivers/isdn/sc/message.h
@@ -0,0 +1,245 @@
+/* $Id: message.h,v 1.1.10.1 2001/09/23 22:24:59 kai Exp $
+ *
+ * Copyright (C) 1996  SpellCaster Telecommunications Inc.
+ *
+ * structures, macros and defines useful for sending
+ * messages to the adapter
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * For more information, please contact gpl-info@spellcast.com or write:
+ *
+ *     SpellCaster Telecommunications Inc.
+ *     5621 Finch Avenue East, Unit #3
+ *     Scarborough, Ontario  Canada
+ *     M1B 2T9
+ *     +1 (416) 297-8565
+ *     +1 (416) 297-6433 Facsimile
+ */
+
+/*
+ * Board message macros, defines and structures
+ */
+ 
+#ifndef MESSAGE_H
+#define MESSAGE_H
+
+#define MAX_MESSAGES		32	/* Maximum messages that can be
+					   queued */
+#define MSG_DATA_LEN		48	/* Maximum size of message payload */
+#define MSG_LEN			64	/* Size of a message */
+#define CMPID			0	/* Loader message process ID */
+#define CEPID			64	/* Firmware message process ID */
+
+/*
+ * Macro to determine if a message is a loader message
+ */
+#define IS_CM_MESSAGE(mesg, tx, cx, dx)		\
+		((mesg.type == cmRspType##tx)		\
+		&&(mesg.class == cmRspClass##cx)	\
+		&&(mesg.code == cmRsp##dx))
+
+/*
+ * Macro to determine if a message is a firmware message
+ */
+#define IS_CE_MESSAGE(mesg, tx, cx, dx)		\
+		((mesg.type == ceRspType##tx)		\
+		&&(mesg.class == ceRspClass##cx)	\
+		&&(mesg.code == ceRsp##tx##dx))
+
+/* 
+ * Loader Request and Response Messages
+ */
+
+/* message types */
+#define cmReqType1			1
+#define cmReqType2			2
+#define cmRspType0			0
+#define cmRspType1			1
+#define cmRspType2			2
+#define cmRspType5			5
+
+/* message classes */
+#define cmReqClass0			0
+#define cmRspClass0			0
+
+/* message codes */
+#define cmReqHWConfig		1			/* 1,0,1 */
+#define cmReqMsgLpbk		2			/* 1,0,2 */
+#define cmReqVersion		3			/* 1,0,3 */
+#define cmReqLoadProc		1			/* 2,0,1 */
+#define cmReqStartProc		2			/* 2,0,2 */
+#define cmReqReadMem		6			/* 2,0,6 */
+#define cmRspHWConfig		cmReqHWConfig
+#define	cmRspMsgLpbk		cmReqMsgLpbk
+#define cmRspVersion		cmReqVersion
+#define cmRspLoadProc		cmReqLoadProc
+#define cmRspStartProc		cmReqStartProc
+#define	cmRspReadMem		cmReqReadMem
+#define cmRspMiscEngineUp	1			/* 5,0,1 */
+#define cmRspInvalid		0			/* 0,0,0 */
+
+
+/*
+ * Firmware Request and Response Messages
+ */
+
+/* message types */
+#define ceReqTypePhy		1
+#define ceReqTypeLnk		2
+#define ceReqTypeCall		3
+#define ceReqTypeStat		1
+#define ceRspTypeErr		0
+#define	ceRspTypePhy		ceReqTypePhy
+#define ceRspTypeLnk		ceReqTypeLnk
+#define ceRspTypeCall		ceReqTypeCall
+#define ceRspTypeStat		ceReqTypeStat
+
+/* message classes */
+#define ceReqClass0		0
+#define ceReqClass1		1
+#define ceReqClass2		2
+#define ceReqClass3		3
+#define ceRspClass0		ceReqClass0
+#define ceRspClass1		ceReqClass1
+#define ceRspClass2		ceReqClass2
+#define ceRspClass3		ceReqClass3
+
+/* message codes  (B) = BRI only, (P) = PRI only, (V) = POTS only */
+#define ceReqPhyProcInfo	1			/* 1,0,1 */
+#define ceReqPhyConnect		1			/* 1,1,1 */
+#define ceReqPhyDisconnect	2			/* 1,1,2 */
+#define ceReqPhySetParams	3			/* 1,1,3 (P) */
+#define ceReqPhyGetParams	4			/* 1,1,4 (P) */
+#define ceReqPhyStatus		1			/* 1,2,1 */
+#define ceReqPhyAcfaStatus	2			/* 1,2,2 (P) */
+#define ceReqPhyChCallState	3			/* 1,2,3 (P) */
+#define ceReqPhyChServState	4			/* 1,2,4 (P) */
+#define ceReqPhyRLoopBack	1			/* 1,3,1 */
+#define ceRspPhyProcInfo	ceReqPhyProcInfo
+#define	ceRspPhyConnect		ceReqPhyConnect
+#define ceRspPhyDisconnect	ceReqPhyDisconnect
+#define ceRspPhySetParams	ceReqPhySetParams
+#define ceRspPhyGetParams	ceReqPhyGetParams
+#define ceRspPhyStatus		ceReqPhyStatus
+#define ceRspPhyAcfaStatus	ceReqPhyAcfaStatus
+#define ceRspPhyChCallState	ceReqPhyChCallState
+#define ceRspPhyChServState	ceReqPhyChServState
+#define ceRspPhyRLoopBack	ceReqphyRLoopBack
+#define ceReqLnkSetParam	1			/* 2,0,1 */
+#define ceReqLnkGetParam	2			/* 2,0,2 */
+#define ceReqLnkGetStats	3			/* 2,0,3 */
+#define ceReqLnkWrite		1			/* 2,1,1 */
+#define ceReqLnkRead		2			/* 2,1,2 */
+#define ceReqLnkFlush		3			/* 2,1,3 */
+#define ceReqLnkWrBufTrc	4			/* 2,1,4 */
+#define ceReqLnkRdBufTrc	5			/* 2,1,5 */
+#define ceRspLnkSetParam	ceReqLnkSetParam
+#define ceRspLnkGetParam	ceReqLnkGetParam
+#define ceRspLnkGetStats	ceReqLnkGetStats
+#define ceRspLnkWrite		ceReqLnkWrite
+#define ceRspLnkRead		ceReqLnkRead
+#define ceRspLnkFlush		ceReqLnkFlush
+#define ceRspLnkWrBufTrc	ceReqLnkWrBufTrc
+#define ceRspLnkRdBufTrc	ceReqLnkRdBufTrc
+#define ceReqCallSetSwitchType	1			/* 3,0,1 */
+#define ceReqCallGetSwitchType	2			/* 3,0,2 */
+#define ceReqCallSetFrameFormat	3			/* 3,0,3 */
+#define ceReqCallGetFrameFormat	4			/* 3,0,4 */
+#define ceReqCallSetCallType	5			/* 3,0,5 */
+#define ceReqCallGetCallType	6			/* 3,0,6 */
+#define ceReqCallSetSPID	7			/* 3,0,7 (!P) */
+#define ceReqCallGetSPID	8			/* 3,0,8 (!P) */
+#define ceReqCallSetMyNumber	9			/* 3,0,9 (!P) */
+#define ceReqCallGetMyNumber	10			/* 3,0,10 (!P) */
+#define	ceRspCallSetSwitchType	ceReqCallSetSwitchType
+#define ceRspCallGetSwitchType	ceReqCallSetSwitchType
+#define ceRspCallSetFrameFormat	ceReqCallSetFrameFormat
+#define ceRspCallGetFrameFormat	ceReqCallGetFrameFormat
+#define ceRspCallSetCallType	ceReqCallSetCallType
+#define ceRspCallGetCallType	ceReqCallGetCallType
+#define ceRspCallSetSPID	ceReqCallSetSPID
+#define ceRspCallGetSPID	ceReqCallGetSPID
+#define ceRspCallSetMyNumber	ceReqCallSetMyNumber
+#define ceRspCallGetMyNumber	ceReqCallGetMyNumber
+#define ceRspStatAcfaStatus	2
+#define ceRspStat
+#define ceRspErrError		0			/* 0,0,0 */
+
+/*
+ * Call Types
+ */
+#define CALLTYPE_64K		0
+#define CALLTYPE_56K		1
+#define CALLTYPE_SPEECH		2
+#define CALLTYPE_31KHZ		3
+
+/*
+ * Link Level data contains a pointer to and the length of
+ * a buffer in shared RAM. Used by LnkRead and LnkWrite message
+ * types. Part of RspMsgStruct and ReqMsgStruct.
+ */
+typedef struct {
+	unsigned long buff_offset;
+	unsigned short msg_len;
+} LLData;
+
+
+/* 
+ * Message payload template for an HWConfig message
+ */
+typedef struct {
+	char st_u_sense;
+	char powr_sense;
+	char sply_sense;
+	unsigned char asic_id;
+	long ram_size;
+	char serial_no[13];
+	char part_no[13];
+	char rev_no[2];
+} HWConfig_pl;
+
+/*
+ * A Message
+ */
+struct message {
+	unsigned char sequence_no;
+	unsigned char process_id;
+	unsigned char time_stamp;
+	unsigned char cmd_sequence_no;	/* Rsp messages only */
+	unsigned char reserved1[3];
+	unsigned char msg_byte_cnt;
+	unsigned char type;
+	unsigned char class;
+	unsigned char code;
+	unsigned char phy_link_no;
+	unsigned char rsp_status;	/* Rsp messages only */
+	unsigned char reseved2[3];
+	union {
+		unsigned char byte_array[MSG_DATA_LEN];
+		LLData response;
+		HWConfig_pl HWCresponse;
+	} msg_data;
+};
+
+typedef struct message ReqMessage;	/* Request message */
+typedef struct message RspMessage;	/* Response message */
+
+/*
+ * The first 5010 bytes of shared memory contain the message queues,
+ * indexes and other data. This structure is its template
+ */
+typedef struct {
+	volatile ReqMessage req_queue[MAX_MESSAGES];
+	volatile RspMessage rsp_queue[MAX_MESSAGES];
+	volatile unsigned char req_head;
+	volatile unsigned char req_tail;
+	volatile unsigned char rsp_head;
+	volatile unsigned char rsp_tail;
+	volatile unsigned long signature;
+	volatile unsigned long trace_enable;
+	volatile unsigned char reserved[4];
+} DualPortMemory;
+
+#endif
diff --git a/drivers/isdn/sc/packet.c b/drivers/isdn/sc/packet.c
new file mode 100644
index 00000000..5ff6ae86
--- /dev/null
+++ b/drivers/isdn/sc/packet.c
@@ -0,0 +1,205 @@
+/* $Id: packet.c,v 1.5.8.1 2001/09/23 22:24:59 kai Exp $
+ *
+ * Copyright (C) 1996  SpellCaster Telecommunications Inc.
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * For more information, please contact gpl-info@spellcast.com or write:
+ *
+ *     SpellCaster Telecommunications Inc.
+ *     5621 Finch Avenue East, Unit #3
+ *     Scarborough, Ontario  Canada
+ *     M1B 2T9
+ *     +1 (416) 297-8565
+ *     +1 (416) 297-6433 Facsimile
+ */
+
+#include "includes.h"
+#include "hardware.h"
+#include "message.h"
+#include "card.h"
+
+int sndpkt(int devId, int channel, int ack, struct sk_buff *data)
+{
+	LLData	ReqLnkWrite;
+	int status;
+	int card;
+	unsigned long len;
+
+	card = get_card_from_id(devId);
+
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("invalid param: %d is not a valid card id\n", card);
+		return -ENODEV;
+	}
+
+	pr_debug("%s: sndpkt: frst = 0x%lx nxt = %d  f = %d n = %d\n",
+		sc_adapter[card]->devicename,
+		sc_adapter[card]->channel[channel].first_sendbuf,
+		sc_adapter[card]->channel[channel].next_sendbuf,
+		sc_adapter[card]->channel[channel].free_sendbufs,
+		sc_adapter[card]->channel[channel].num_sendbufs);
+
+	if(!sc_adapter[card]->channel[channel].free_sendbufs) {
+		pr_debug("%s: out of TX buffers\n",
+				sc_adapter[card]->devicename);
+		return -EINVAL;
+	}
+
+	if(data->len > BUFFER_SIZE) {
+		pr_debug("%s: data overflows buffer size (data > buffer)\n",
+			sc_adapter[card]->devicename);
+		return -EINVAL;
+	}
+
+	ReqLnkWrite.buff_offset = sc_adapter[card]->channel[channel].next_sendbuf *
+		BUFFER_SIZE + sc_adapter[card]->channel[channel].first_sendbuf;
+	ReqLnkWrite.msg_len = data->len; /* sk_buff size */
+	pr_debug("%s: writing %d bytes to buffer offset 0x%lx\n",
+			sc_adapter[card]->devicename,
+			ReqLnkWrite.msg_len, ReqLnkWrite.buff_offset);
+	memcpy_toshmem(card, (char *)ReqLnkWrite.buff_offset, data->data, ReqLnkWrite.msg_len);
+
+	/*
+	 * sendmessage
+	 */
+	pr_debug("%s: sndpkt size=%d, buf_offset=0x%lx buf_indx=%d\n",
+		sc_adapter[card]->devicename,
+		ReqLnkWrite.msg_len, ReqLnkWrite.buff_offset,
+		sc_adapter[card]->channel[channel].next_sendbuf);
+
+	status = sendmessage(card, CEPID, ceReqTypeLnk, ceReqClass1, ceReqLnkWrite,
+				channel+1, sizeof(LLData), (unsigned int*)&ReqLnkWrite);
+	len = data->len;
+	if(status) {
+		pr_debug("%s: failed to send packet, status = %d\n",
+				sc_adapter[card]->devicename, status);
+		return -1;
+	}
+	else {
+		sc_adapter[card]->channel[channel].free_sendbufs--;
+		sc_adapter[card]->channel[channel].next_sendbuf =
+			++sc_adapter[card]->channel[channel].next_sendbuf ==
+			sc_adapter[card]->channel[channel].num_sendbufs ? 0 :
+			sc_adapter[card]->channel[channel].next_sendbuf;
+			pr_debug("%s: packet sent successfully\n", sc_adapter[card]->devicename);
+		dev_kfree_skb(data);
+		indicate_status(card,ISDN_STAT_BSENT,channel, (char *)&len);
+	}
+	return len;
+}
+
+void rcvpkt(int card, RspMessage *rcvmsg)
+{
+	LLData newll;
+	struct sk_buff *skb;
+
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("invalid param: %d is not a valid card id\n", card);
+		return;
+	}
+
+	switch(rcvmsg->rsp_status){
+	case 0x01:
+	case 0x02:
+	case 0x70:
+		pr_debug("%s: error status code: 0x%x\n",
+			sc_adapter[card]->devicename, rcvmsg->rsp_status);
+		return;
+	case 0x00: 
+	    if (!(skb = dev_alloc_skb(rcvmsg->msg_data.response.msg_len))) {
+			printk(KERN_WARNING "%s: rcvpkt out of memory, dropping packet\n",
+				sc_adapter[card]->devicename);
+			return;
+		}
+		skb_put(skb, rcvmsg->msg_data.response.msg_len);
+		pr_debug("%s: getting data from offset: 0x%lx\n",
+			sc_adapter[card]->devicename,
+			rcvmsg->msg_data.response.buff_offset);
+		memcpy_fromshmem(card,
+			skb_put(skb, rcvmsg->msg_data.response.msg_len),
+		 	(char *)rcvmsg->msg_data.response.buff_offset,
+			rcvmsg->msg_data.response.msg_len);
+		sc_adapter[card]->card->rcvcallb_skb(sc_adapter[card]->driverId,
+			rcvmsg->phy_link_no-1, skb);
+
+	case 0x03:
+		/*
+	 	 * Recycle the buffer
+	 	 */
+		pr_debug("%s: buffer size : %d\n",
+				sc_adapter[card]->devicename, BUFFER_SIZE);
+/*		memset_shmem(card, rcvmsg->msg_data.response.buff_offset, 0, BUFFER_SIZE); */
+		newll.buff_offset = rcvmsg->msg_data.response.buff_offset;
+		newll.msg_len = BUFFER_SIZE;
+		pr_debug("%s: recycled buffer at offset 0x%lx size %d\n",
+			sc_adapter[card]->devicename,
+			newll.buff_offset, newll.msg_len);
+		sendmessage(card, CEPID, ceReqTypeLnk, ceReqClass1, ceReqLnkRead,
+			rcvmsg->phy_link_no, sizeof(LLData), (unsigned int *)&newll);
+	}
+
+}
+
+int setup_buffers(int card, int c)
+{
+	unsigned int nBuffers, i, cBase;
+	unsigned int buffer_size;
+	LLData	RcvBuffOffset;
+
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("invalid param: %d is not a valid card id\n", card);
+		return -ENODEV;
+	}
+
+	/*
+	 * Calculate the buffer offsets (send/recv/send/recv)
+	 */
+	pr_debug("%s: setting up channel buffer space in shared RAM\n",
+			sc_adapter[card]->devicename);
+	buffer_size = BUFFER_SIZE;
+	nBuffers = ((sc_adapter[card]->ramsize - BUFFER_BASE) / buffer_size) / 2;
+	nBuffers = nBuffers > BUFFERS_MAX ? BUFFERS_MAX : nBuffers;
+	pr_debug("%s: calculating buffer space: %d buffers, %d big\n",
+		sc_adapter[card]->devicename,
+		nBuffers, buffer_size);
+	if(nBuffers < 2) {
+		pr_debug("%s: not enough buffer space\n",
+			sc_adapter[card]->devicename);
+		return -1;
+	}
+	cBase = (nBuffers * buffer_size) * (c - 1);
+	pr_debug("%s: channel buffer offset from shared RAM: 0x%x\n",
+			sc_adapter[card]->devicename, cBase);
+	sc_adapter[card]->channel[c-1].first_sendbuf = BUFFER_BASE + cBase;
+	sc_adapter[card]->channel[c-1].num_sendbufs = nBuffers / 2;
+	sc_adapter[card]->channel[c-1].free_sendbufs = nBuffers / 2;
+	sc_adapter[card]->channel[c-1].next_sendbuf = 0;
+	pr_debug("%s: send buffer setup complete: first=0x%lx n=%d f=%d, nxt=%d\n",
+				sc_adapter[card]->devicename,
+				sc_adapter[card]->channel[c-1].first_sendbuf,
+				sc_adapter[card]->channel[c-1].num_sendbufs,
+				sc_adapter[card]->channel[c-1].free_sendbufs,
+				sc_adapter[card]->channel[c-1].next_sendbuf);
+
+	/*
+	 * Prep the receive buffers
+	 */
+	pr_debug("%s: adding %d RecvBuffers:\n",
+			sc_adapter[card]->devicename, nBuffers /2);
+	for (i = 0 ; i < nBuffers / 2; i++) {
+		RcvBuffOffset.buff_offset = 
+			((sc_adapter[card]->channel[c-1].first_sendbuf +
+			(nBuffers / 2) * buffer_size) + (buffer_size * i));
+		RcvBuffOffset.msg_len = buffer_size;
+		pr_debug("%s: adding RcvBuffer #%d offset=0x%lx sz=%d bufsz:%d\n",
+				sc_adapter[card]->devicename,
+				i + 1, RcvBuffOffset.buff_offset, 
+				RcvBuffOffset.msg_len,buffer_size);
+		sendmessage(card, CEPID, ceReqTypeLnk, ceReqClass1, ceReqLnkRead,
+				c, sizeof(LLData), (unsigned int *)&RcvBuffOffset);
+	} 
+	return 0;
+}
+
diff --git a/drivers/isdn/sc/scioc.h b/drivers/isdn/sc/scioc.h
new file mode 100644
index 00000000..dfb107a6
--- /dev/null
+++ b/drivers/isdn/sc/scioc.h
@@ -0,0 +1,111 @@
+#ifndef __ISDN_SC_SCIOC_H__
+#define __ISDN_SC_SCIOC_H__
+
+/*
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ */
+
+/*
+ * IOCTL Command Codes
+ */
+#define SCIOCLOAD	0x01	/* Load a firmware record */
+#define SCIOCRESET	0x02	/* Perform hard reset */
+#define SCIOCDEBUG	0x03	/* Set debug level */
+#define SCIOCREV	0x04	/* Get driver revision(s) */
+#define SCIOCSTART	0x05	/* Start the firmware */
+#define SCIOCGETSWITCH	0x06	/* Get switch type */
+#define SCIOCSETSWITCH	0x07	/* Set switch type */
+#define SCIOCGETSPID	0x08	/* Get channel SPID */
+#define SCIOCSETSPID	0x09 	/* Set channel SPID */
+#define SCIOCGETDN	0x0A	/* Get channel DN */
+#define SCIOCSETDN	0x0B 	/* Set channel DN */
+#define SCIOCTRACE	0x0C	/* Toggle trace mode */
+#define SCIOCSTAT	0x0D	/* Get line status */
+#define SCIOCGETSPEED	0x0E	/* Set channel speed */
+#define SCIOCSETSPEED	0x0F	/* Set channel speed */
+#define SCIOCLOOPTST	0x10	/* Perform loopback test */
+
+typedef struct {
+	int device;
+	int channel;
+	unsigned long command;
+	void __user *dataptr;
+} scs_ioctl;
+
+/* Size of strings */
+#define SCIOC_SPIDSIZE		49
+#define SCIOC_DNSIZE		SCIOC_SPIDSIZE
+#define SCIOC_REVSIZE		SCIOC_SPIDSIZE
+#define SCIOC_SRECSIZE		49
+
+typedef struct {
+	unsigned long tx_good;
+	unsigned long tx_bad;
+	unsigned long rx_good;
+	unsigned long rx_bad;
+} ChLinkStats;
+
+typedef struct {
+	char spid[49];
+	char dn[49];
+	char call_type;
+	char phy_stat;
+	ChLinkStats link_stats;
+} BRIStat;
+
+typedef BRIStat POTStat;
+
+typedef struct {
+	char call_type;
+	char call_state;
+	char serv_state;
+	char phy_stat;
+	ChLinkStats link_stats;
+} PRIStat;
+
+typedef char PRIInfo;
+typedef char BRIInfo;
+typedef char POTInfo;
+
+
+typedef struct {
+	char acfa_nos;
+	char acfa_ais;
+	char acfa_los;
+	char acfa_rra;
+	char acfa_slpp;
+	char acfa_slpn;
+	char acfa_fsrf;
+} ACFAStat;
+
+typedef struct {
+	unsigned char modelid;
+	char serial_no[13];
+	char part_no[13];
+	char load_ver[11];
+	char proc_ver[11];
+	int iobase;
+	long rambase;
+	char irq;
+	long ramsize;
+	char interface;
+	char switch_type;
+	char l1_status;
+	char l2_status;
+	ChLinkStats dch_stats;
+	ACFAStat AcfaStats;
+	union {
+		PRIStat pristats[23];
+		BRIStat bristats[2];
+		POTStat potsstats[2];
+	} status;
+	union {
+		PRIInfo priinfo;
+		BRIInfo briinfo;
+		POTInfo potsinfo;
+	} info;
+} boardInfo;
+
+#endif  /*  __ISDN_SC_SCIOC_H__  */
+
diff --git a/drivers/isdn/sc/shmem.c b/drivers/isdn/sc/shmem.c
new file mode 100644
index 00000000..7f16d75d
--- /dev/null
+++ b/drivers/isdn/sc/shmem.c
@@ -0,0 +1,138 @@
+/* $Id: shmem.c,v 1.2.10.1 2001/09/23 22:24:59 kai Exp $
+ *
+ * Copyright (C) 1996  SpellCaster Telecommunications Inc.
+ *
+ * Card functions implementing ISDN4Linux functionality
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * For more information, please contact gpl-info@spellcast.com or write:
+ *
+ *     SpellCaster Telecommunications Inc.
+ *     5621 Finch Avenue East, Unit #3
+ *     Scarborough, Ontario  Canada
+ *     M1B 2T9
+ *     +1 (416) 297-8565
+ *     +1 (416) 297-6433 Facsimile
+ */
+
+#include "includes.h"		/* This must be first */
+#include "hardware.h"
+#include "card.h"
+
+/*
+ *
+ */
+void memcpy_toshmem(int card, void *dest, const void *src, size_t n)
+{
+	unsigned long flags;
+	unsigned char ch;
+	unsigned long dest_rem = ((unsigned long) dest) % 0x4000;
+
+	if (!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return;
+	}
+
+	if (n > SRAM_PAGESIZE)
+		return;
+
+	/*
+	 * determine the page to load from the address
+	 */
+	ch = (unsigned long) dest / SRAM_PAGESIZE;
+	pr_debug("%s: loaded page %d\n", sc_adapter[card]->devicename,ch);
+	/*
+	 * Block interrupts and load the page
+	 */
+	spin_lock_irqsave(&sc_adapter[card]->lock, flags);
+
+	outb(((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE) >> 14) | 0x80,
+		sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport]);
+	memcpy_toio((void __iomem *)(sc_adapter[card]->rambase + dest_rem), src, n);
+	spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
+	pr_debug("%s: set page to %#x\n",sc_adapter[card]->devicename,
+		((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE)>>14)|0x80);
+	pr_debug("%s: copying %zu bytes from %#lx to %#lx\n",
+		sc_adapter[card]->devicename, n,
+		(unsigned long) src,
+		sc_adapter[card]->rambase + ((unsigned long) dest %0x4000));
+}
+
+/*
+ * Reverse of above
+ */
+void memcpy_fromshmem(int card, void *dest, const void *src, size_t n)
+{
+	unsigned long flags;
+	unsigned char ch;
+
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return;
+	}
+
+	if(n > SRAM_PAGESIZE) {
+		return;
+	}
+
+	/*
+	 * determine the page to load from the address
+	 */
+	ch = (unsigned long) src / SRAM_PAGESIZE;
+	pr_debug("%s: loaded page %d\n", sc_adapter[card]->devicename,ch);
+	
+	
+	/*
+	 * Block interrupts and load the page
+	 */
+	spin_lock_irqsave(&sc_adapter[card]->lock, flags);
+
+	outb(((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE) >> 14) | 0x80,
+		sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport]);
+	memcpy_fromio(dest,(void *)(sc_adapter[card]->rambase +
+		((unsigned long) src % 0x4000)), n);
+	spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
+	pr_debug("%s: set page to %#x\n",sc_adapter[card]->devicename,
+		((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE)>>14)|0x80);
+/*	pr_debug("%s: copying %d bytes from %#x to %#x\n",
+		sc_adapter[card]->devicename, n,
+		sc_adapter[card]->rambase + ((unsigned long) src %0x4000), (unsigned long) dest); */
+}
+
+#if 0
+void memset_shmem(int card, void *dest, int c, size_t n)
+{
+	unsigned long flags;
+	unsigned char ch;
+
+	if(!IS_VALID_CARD(card)) {
+		pr_debug("Invalid param: %d is not a valid card id\n", card);
+		return;
+	}
+
+	if(n > SRAM_PAGESIZE) {
+		return;
+	}
+
+	/*
+	 * determine the page to load from the address
+	 */
+	ch = (unsigned long) dest / SRAM_PAGESIZE;
+	pr_debug("%s: loaded page %d\n",sc_adapter[card]->devicename,ch);
+
+	/*
+	 * Block interrupts and load the page
+	 */
+	spin_lock_irqsave(&sc_adapter[card]->lock, flags);
+
+	outb(((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE) >> 14) | 0x80,
+		sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport]);
+	memset_io(sc_adapter[card]->rambase +
+		((unsigned long) dest % 0x4000), c, n);
+	pr_debug("%s: set page to %#x\n",sc_adapter[card]->devicename,
+		((sc_adapter[card]->shmem_magic + ch * SRAM_PAGESIZE)>>14)|0x80);
+	spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
+}
+#endif  /*  0  */
diff --git a/drivers/isdn/sc/timer.c b/drivers/isdn/sc/timer.c
new file mode 100644
index 00000000..91fbe0dc
--- /dev/null
+++ b/drivers/isdn/sc/timer.c
@@ -0,0 +1,123 @@
+/* $Id: timer.c,v 1.3.6.1 2001/09/23 22:24:59 kai Exp $
+ *
+ * Copyright (C) 1996  SpellCaster Telecommunications Inc.
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * For more information, please contact gpl-info@spellcast.com or write:
+ *
+ *     SpellCaster Telecommunications Inc.
+ *     5621 Finch Avenue East, Unit #3
+ *     Scarborough, Ontario  Canada
+ *     M1B 2T9
+ *     +1 (416) 297-8565
+ *     +1 (416) 297-6433 Facsimile
+ */
+
+#include "includes.h"
+#include "hardware.h"
+#include "message.h"
+#include "card.h"
+
+
+/*
+ * Write the proper values into the I/O ports following a reset
+ */
+static void setup_ports(int card)
+{
+
+	outb((sc_adapter[card]->rambase >> 12), sc_adapter[card]->ioport[EXP_BASE]);
+
+	/* And the IRQ */
+	outb((sc_adapter[card]->interrupt | 0x80),
+		sc_adapter[card]->ioport[IRQ_SELECT]);
+}
+
+/*
+ * Timed function to check the status of a previous reset
+ * Must be very fast as this function runs in the context of
+ * an interrupt handler.
+ *
+ * Setup the ioports for the board that were cleared by the reset.
+ * Then, check to see if the signate has been set. Next, set the
+ * signature to a known value and issue a startproc if needed.
+ */
+void sc_check_reset(unsigned long data)
+{
+	unsigned long flags;
+	unsigned long sig;
+	int card = (unsigned int) data;
+
+	pr_debug("%s: check_timer timer called\n",
+		sc_adapter[card]->devicename);
+
+	/* Setup the io ports */
+	setup_ports(card);
+
+	spin_lock_irqsave(&sc_adapter[card]->lock, flags);
+	outb(sc_adapter[card]->ioport[sc_adapter[card]->shmem_pgport],
+		(sc_adapter[card]->shmem_magic>>14) | 0x80);
+	sig = (unsigned long) *((unsigned long *)(sc_adapter[card]->rambase + SIG_OFFSET));
+
+	/* check the signature */
+	if(sig == SIGNATURE) {
+		flushreadfifo(card);
+		spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
+		/* See if we need to do a startproc */
+		if (sc_adapter[card]->StartOnReset)
+			startproc(card);
+	} else  {
+		pr_debug("%s: No signature yet, waiting another %lu jiffies.\n",
+			sc_adapter[card]->devicename, CHECKRESET_TIME);
+		mod_timer(&sc_adapter[card]->reset_timer, jiffies+CHECKRESET_TIME);
+		spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
+	}
+}
+
+/*
+ * Timed function to check the status of a previous reset
+ * Must be very fast as this function runs in the context of
+ * an interrupt handler.
+ *
+ * Send check sc_adapter->phystat to see if the channels are up
+ * If they are, tell ISDN4Linux that the board is up. If not,
+ * tell IADN4Linux that it is up. Always reset the timer to
+ * fire again (endless loop).
+ */
+void check_phystat(unsigned long data)
+{
+	unsigned long flags;
+	int card = (unsigned int) data;
+
+	pr_debug("%s: Checking status...\n", sc_adapter[card]->devicename);
+	/* 
+	 * check the results of the last PhyStat and change only if
+	 * has changed drastically
+	 */
+	if (sc_adapter[card]->nphystat && !sc_adapter[card]->phystat) {   /* All is well */
+		pr_debug("PhyStat transition to RUN\n");
+		pr_info("%s: Switch contacted, transmitter enabled\n", 
+			sc_adapter[card]->devicename);
+		indicate_status(card, ISDN_STAT_RUN, 0, NULL);
+	}
+	else if (!sc_adapter[card]->nphystat && sc_adapter[card]->phystat) {   /* All is not well */
+		pr_debug("PhyStat transition to STOP\n");
+		pr_info("%s: Switch connection lost, transmitter disabled\n", 
+			sc_adapter[card]->devicename);
+
+		indicate_status(card, ISDN_STAT_STOP, 0, NULL);
+	}
+
+	sc_adapter[card]->phystat = sc_adapter[card]->nphystat;
+
+	/* Reinitialize the timer */
+	spin_lock_irqsave(&sc_adapter[card]->lock, flags);
+	mod_timer(&sc_adapter[card]->stat_timer, jiffies+CHECKSTAT_TIME);
+	spin_unlock_irqrestore(&sc_adapter[card]->lock, flags);
+
+	/* Send a new cePhyStatus message */
+	sendmessage(card, CEPID,ceReqTypePhy,ceReqClass2,
+		ceReqPhyStatus,0,0,NULL);
+}
+