Staging: dgap: Remove obsolete driver

Remove support for dgap driver since there is no way to get
the firmware files required by the dgap driver into the linux-
firmware tree. The dgap driver is rendered useless without this
firmware and hence this product is considered obsolete by DIGI.

Signed-off-by: Shraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

MAINTAINERS

@@ -3538,13 +3538,6 @@ L:	driverdev-devel@linuxdriverproject.org
 S:	Maintained
 F:	drivers/staging/dgnc/
 
-DIGI EPCA PCI PRODUCTS
-M:	Lidza Louina <lidza.louina@gmail.com>
-M:	Daeseok Youn <daeseok.youn@gmail.com>
-L:	driverdev-devel@linuxdriverproject.org
-S:	Maintained
-F:	drivers/staging/dgap/
-
 DIOLAN U2C-12 I2C DRIVER
 M:	Guenter Roeck <linux@roeck-us.net>
 L:	linux-i2c@vger.kernel.org

drivers/staging/Kconfig

@@ -90,8 +90,6 @@ source "drivers/staging/lustre/Kconfig"
 
 source "drivers/staging/dgnc/Kconfig"
 
-source "drivers/staging/dgap/Kconfig"
-
 source "drivers/staging/gs_fpgaboot/Kconfig"
 
 source "drivers/staging/skein/Kconfig"

drivers/staging/Makefile

@@ -36,7 +36,6 @@ obj-$(CONFIG_FIREWIRE_SERIAL)	+= fwserial/
 obj-$(CONFIG_GOLDFISH)		+= goldfish/
 obj-$(CONFIG_LUSTRE_FS)		+= lustre/
 obj-$(CONFIG_DGNC)			+= dgnc/
-obj-$(CONFIG_DGAP)			+= dgap/
 obj-$(CONFIG_MTD_SPINAND_MT29F)	+= mt29f_spinand/
 obj-$(CONFIG_GS_FPGABOOT)	+= gs_fpgaboot/
 obj-$(CONFIG_CRYPTO_SKEIN)	+= skein/

drivers/staging/dgap/Kconfig

@@ -1,6 +0,0 @@
-config DGAP
-       tristate "Digi EPCA PCI products"
-       default n
-       depends on TTY && HAS_IOMEM
-       ---help---
-       Driver for the Digi International EPCA PCI based product line

drivers/staging/dgap/Makefile

@@ -1 +0,0 @@
-obj-$(CONFIG_DGAP) += dgap.o

drivers/staging/dgap/dgap.c

@@ -1,7079 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- *	Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE.  See the GNU General Public License for more details.
- *
- */
-
-/*
- *      In the original out of kernel Digi dgap driver, firmware
- *      loading was done via user land to driver handshaking.
- *
- *      For cards that support a concentrator (port expander),
- *      I believe the concentrator its self told the card which
- *      concentrator is actually attached and then that info
- *      was used to tell user land which concentrator firmware
- *      image was to be downloaded. I think even the BIOS or
- *      FEP images required could change with the connection
- *      of a particular concentrator.
- *
- *      Since I have no access to any of these cards or
- *      concentrators, I cannot put the correct concentrator
- *      firmware file names into the firmware_info structure
- *      as is now done for the BIOS and FEP images.
- *
- *      I think, but am not certain, that the cards supporting
- *      concentrators will function without them. So support
- *      of these cards has been left in this driver.
- *
- *      In order to fully support those cards, they would
- *      either have to be acquired for dissection or maybe
- *      Digi International could provide some assistance.
- */
-#undef DIGI_CONCENTRATORS_SUPPORTED
-
-#define pr_fmt(fmt) "dgap: " fmt
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/delay.h>	/* For udelay */
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-#include <linux/sched.h>
-
-#include <linux/interrupt.h>	/* For tasklet and interrupt structs/defines */
-#include <linux/ctype.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial_reg.h>
-#include <linux/io.h>		/* For read[bwl]/write[bwl] */
-
-#include <linux/string.h>
-#include <linux/device.h>
-#include <linux/kdev_t.h>
-#include <linux/firmware.h>
-
-#include "dgap.h"
-
-/*
- * File operations permitted on Control/Management major.
- */
-static const struct file_operations dgap_board_fops = {
-	.owner	= THIS_MODULE,
-};
-
-static uint dgap_numboards;
-static struct board_t *dgap_board[MAXBOARDS];
-static ulong dgap_poll_counter;
-static int dgap_driver_state = DRIVER_INITIALIZED;
-static int dgap_poll_tick = 20;	/* Poll interval - 20 ms */
-
-static struct class *dgap_class;
-
-static uint dgap_count = 500;
-
-/*
- * Poller stuff
- */
-static DEFINE_SPINLOCK(dgap_poll_lock);	/* Poll scheduling lock */
-static ulong dgap_poll_time;		/* Time of next poll */
-static uint dgap_poll_stop;		/* Used to tell poller to stop */
-static struct timer_list dgap_poll_timer;
-
-/*
-     SUPPORTED PRODUCTS
-
-     Card Model               Number of Ports      Interface
-     ----------------------------------------------------------------
-     Acceleport Xem           4 - 64              (EIA232 & EIA422)
-     Acceleport Xr            4 & 8               (EIA232)
-     Acceleport Xr 920        4 & 8               (EIA232)
-     Acceleport C/X           8 - 128             (EIA232)
-     Acceleport EPC/X         8 - 224             (EIA232)
-     Acceleport Xr/422        4 & 8               (EIA422)
-     Acceleport 2r/920        2                   (EIA232)
-     Acceleport 4r/920        4                   (EIA232)
-     Acceleport 8r/920        8                   (EIA232)
-
-     IBM 8-Port Asynchronous PCI Adapter          (EIA232)
-     IBM 128-Port Asynchronous PCI Adapter        (EIA232 & EIA422)
-*/
-
-static struct pci_device_id dgap_pci_tbl[] = {
-	{ DIGI_VID, PCI_DEV_XEM_DID,      PCI_ANY_ID, PCI_ANY_ID, 0, 0,  0 },
-	{ DIGI_VID, PCI_DEV_CX_DID,       PCI_ANY_ID, PCI_ANY_ID, 0, 0,  1 },
-	{ DIGI_VID, PCI_DEV_CX_IBM_DID,   PCI_ANY_ID, PCI_ANY_ID, 0, 0,  2 },
-	{ DIGI_VID, PCI_DEV_EPCJ_DID,     PCI_ANY_ID, PCI_ANY_ID, 0, 0,  3 },
-	{ DIGI_VID, PCI_DEV_920_2_DID,    PCI_ANY_ID, PCI_ANY_ID, 0, 0,  4 },
-	{ DIGI_VID, PCI_DEV_920_4_DID,    PCI_ANY_ID, PCI_ANY_ID, 0, 0,  5 },
-	{ DIGI_VID, PCI_DEV_920_8_DID,    PCI_ANY_ID, PCI_ANY_ID, 0, 0,  6 },
-	{ DIGI_VID, PCI_DEV_XR_DID,       PCI_ANY_ID, PCI_ANY_ID, 0, 0,  7 },
-	{ DIGI_VID, PCI_DEV_XRJ_DID,      PCI_ANY_ID, PCI_ANY_ID, 0, 0,  8 },
-	{ DIGI_VID, PCI_DEV_XR_422_DID,   PCI_ANY_ID, PCI_ANY_ID, 0, 0,  9 },
-	{ DIGI_VID, PCI_DEV_XR_IBM_DID,   PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
-	{ DIGI_VID, PCI_DEV_XR_SAIP_DID,  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
-	{ DIGI_VID, PCI_DEV_XR_BULL_DID,  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
-	{ DIGI_VID, PCI_DEV_920_8_HP_DID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 13 },
-	{ DIGI_VID, PCI_DEV_XEM_HP_DID,   PCI_ANY_ID, PCI_ANY_ID, 0, 0, 14 },
-	{0,}					/* 0 terminated list. */
-};
-MODULE_DEVICE_TABLE(pci, dgap_pci_tbl);
-
-/*
- * A generic list of Product names, PCI Vendor ID, and PCI Device ID.
- */
-struct board_id {
-	uint config_type;
-	u8 *name;
-	uint maxports;
-	uint dpatype;
-};
-
-static struct board_id dgap_ids[] = {
-	{PPCM,        PCI_DEV_XEM_NAME,     64, (T_PCXM | T_PCLITE | T_PCIBUS)},
-	{PCX,         PCI_DEV_CX_NAME,     128, (T_CX | T_PCIBUS)            },
-	{PCX,         PCI_DEV_CX_IBM_NAME, 128, (T_CX | T_PCIBUS)            },
-	{PEPC,        PCI_DEV_EPCJ_NAME,   224, (T_EPC | T_PCIBUS)           },
-	{APORT2_920P, PCI_DEV_920_2_NAME,    2, (T_PCXR | T_PCLITE | T_PCIBUS)},
-	{APORT4_920P, PCI_DEV_920_4_NAME,    4, (T_PCXR | T_PCLITE | T_PCIBUS)},
-	{APORT8_920P, PCI_DEV_920_8_NAME,    8, (T_PCXR | T_PCLITE | T_PCIBUS)},
-	{PAPORT8,     PCI_DEV_XR_NAME,       8, (T_PCXR | T_PCLITE | T_PCIBUS)},
-	{PAPORT8,     PCI_DEV_XRJ_NAME,      8, (T_PCXR | T_PCLITE | T_PCIBUS)},
-	{PAPORT8,     PCI_DEV_XR_422_NAME,   8, (T_PCXR | T_PCLITE | T_PCIBUS)},
-	{PAPORT8,     PCI_DEV_XR_IBM_NAME,   8, (T_PCXR | T_PCLITE | T_PCIBUS)},
-	{PAPORT8,     PCI_DEV_XR_SAIP_NAME,  8, (T_PCXR | T_PCLITE | T_PCIBUS)},
-	{PAPORT8,     PCI_DEV_XR_BULL_NAME,  8, (T_PCXR | T_PCLITE | T_PCIBUS)},
-	{APORT8_920P, PCI_DEV_920_8_HP_NAME, 8, (T_PCXR | T_PCLITE | T_PCIBUS)},
-	{PPCM,        PCI_DEV_XEM_HP_NAME,  64, (T_PCXM | T_PCLITE | T_PCIBUS)},
-	{0,}						/* 0 terminated list. */
-};
-
-struct firmware_info {
-	u8 *conf_name;  /* dgap.conf */
-	u8 *bios_name;	/* BIOS filename */
-	u8 *fep_name;	/* FEP  filename */
-	u8 *con_name;	/* Concentrator filename  FIXME*/
-	int num;        /* sequence number */
-};
-
-/*
- * Firmware - BIOS, FEP, and CONC filenames
- */
-static struct firmware_info fw_info[] = {
-	{ "dgap/dgap.conf", "dgap/sxbios.bin",  "dgap/sxfep.bin",  NULL, 0 },
-	{ "dgap/dgap.conf", "dgap/cxpbios.bin", "dgap/cxpfep.bin", NULL, 1 },
-	{ "dgap/dgap.conf", "dgap/cxpbios.bin", "dgap/cxpfep.bin", NULL, 2 },
-	{ "dgap/dgap.conf", "dgap/pcibios.bin", "dgap/pcifep.bin", NULL, 3 },
-	{ "dgap/dgap.conf", "dgap/xrbios.bin",  "dgap/xrfep.bin",  NULL, 4 },
-	{ "dgap/dgap.conf", "dgap/xrbios.bin",  "dgap/xrfep.bin",  NULL, 5 },
-	{ "dgap/dgap.conf", "dgap/xrbios.bin",  "dgap/xrfep.bin",  NULL, 6 },
-	{ "dgap/dgap.conf", "dgap/xrbios.bin",  "dgap/xrfep.bin",  NULL, 7 },
-	{ "dgap/dgap.conf", "dgap/xrbios.bin",  "dgap/xrfep.bin",  NULL, 8 },
-	{ "dgap/dgap.conf", "dgap/xrbios.bin",  "dgap/xrfep.bin",  NULL, 9 },
-	{ "dgap/dgap.conf", "dgap/xrbios.bin",  "dgap/xrfep.bin",  NULL, 10 },
-	{ "dgap/dgap.conf", "dgap/xrbios.bin",  "dgap/xrfep.bin",  NULL, 11 },
-	{ "dgap/dgap.conf", "dgap/xrbios.bin",  "dgap/xrfep.bin",  NULL, 12 },
-	{ "dgap/dgap.conf", "dgap/xrbios.bin",  "dgap/xrfep.bin",  NULL, 13 },
-	{ "dgap/dgap.conf", "dgap/sxbios.bin",  "dgap/sxfep.bin",  NULL, 14 },
-	{NULL,}
-};
-
-/*
- * Default transparent print information.
- */
-static struct digi_t dgap_digi_init = {
-	.digi_flags =	DIGI_COOK,	/* Flags			*/
-	.digi_maxcps =	100,		/* Max CPS			*/
-	.digi_maxchar =	50,		/* Max chars in print queue	*/
-	.digi_bufsize =	100,		/* Printer buffer size		*/
-	.digi_onlen =	4,		/* size of printer on string	*/
-	.digi_offlen =	4,		/* size of printer off string	*/
-	.digi_onstr =	"\033[5i",	/* ANSI printer on string ]	*/
-	.digi_offstr =	"\033[4i",	/* ANSI printer off string ]	*/
-	.digi_term =	"ansi"		/* default terminal type	*/
-};
-
-/*
- * Define a local default termios struct. All ports will be created
- * with this termios initially.
- *
- * This defines a raw port at 9600 baud, 8 data bits, no parity,
- * 1 stop bit.
- */
-
-static struct ktermios dgap_default_termios = {
-	.c_iflag =	(DEFAULT_IFLAGS),	/* iflags */
-	.c_oflag =	(DEFAULT_OFLAGS),	/* oflags */
-	.c_cflag =	(DEFAULT_CFLAGS),	/* cflags */
-	.c_lflag =	(DEFAULT_LFLAGS),	/* lflags */
-	.c_cc =		INIT_C_CC,
-	.c_line =	0,
-};
-
-/*
- * Our needed internal static variables from dgap_parse.c
- */
-static struct cnode dgap_head;
-#define MAXCWORD 200
-static char dgap_cword[MAXCWORD];
-
-struct toklist {
-	int token;
-	char *string;
-};
-
-static struct toklist dgap_brdtype[] = {
-	{ PCX,		"Digi_AccelePort_C/X_PCI" },
-	{ PEPC,		"Digi_AccelePort_EPC/X_PCI" },
-	{ PPCM,		"Digi_AccelePort_Xem_PCI" },
-	{ APORT2_920P,	"Digi_AccelePort_2r_920_PCI" },
-	{ APORT4_920P,	"Digi_AccelePort_4r_920_PCI" },
-	{ APORT8_920P,	"Digi_AccelePort_8r_920_PCI" },
-	{ PAPORT4,	"Digi_AccelePort_4r_PCI(EIA-232/RS-422)" },
-	{ PAPORT8,	"Digi_AccelePort_8r_PCI(EIA-232/RS-422)" },
-	{ 0, NULL }
-};
-
-static struct toklist dgap_tlist[] = {
-	{ BEGIN,	"config_begin" },
-	{ END,		"config_end" },
-	{ BOARD,	"board"	},
-	{ PCIINFO,	"pciinfo" },
-	{ LINE,		"line" },
-	{ CONC,		"conc" },
-	{ CONC,		"concentrator" },
-	{ CX,		"cx" },
-	{ CX,		"ccon" },
-	{ EPC,		"epccon" },
-	{ EPC,		"epc" },
-	{ MOD,		"module" },
-	{ ID,		"id" },
-	{ STARTO,	"start" },
-	{ SPEED,	"speed"	},
-	{ CABLE,	"cable"	},
-	{ CONNECT,	"connect" },
-	{ METHOD,	"method" },
-	{ STATUS,	"status" },
-	{ CUSTOM,	"Custom" },
-	{ BASIC,	"Basic"	},
-	{ MEM,		"mem" },
-	{ MEM,		"memory" },
-	{ PORTS,	"ports"	},
-	{ MODEM,	"modem"	},
-	{ NPORTS,	"nports" },
-	{ TTYN,		"ttyname" },
-	{ CU,		"cuname" },
-	{ PRINT,	"prname" },
-	{ CMAJOR,	"major"	 },
-	{ ALTPIN,	"altpin" },
-	{ USEINTR,	"useintr" },
-	{ TTSIZ,	"ttysize" },
-	{ CHSIZ,	"chsize" },
-	{ BSSIZ,	"boardsize" },
-	{ UNTSIZ,	"schedsize" },
-	{ F2SIZ,	"f2200size" },
-	{ VPSIZ,	"vpixsize" },
-	{ 0,		NULL }
-};
-
-/*
- * get a word from the input stream, also keep track of current line number.
- * words are separated by whitespace.
- */
-static char *dgap_getword(char **in)
-{
-	char *ret_ptr = *in;
-
-	char *ptr = strpbrk(*in, " \t\n");
-
-	/* If no word found, return null */
-	if (!ptr)
-		return NULL;
-
-	/* Mark new location for our buffer */
-	*ptr = '\0';
-	*in = ptr + 1;
-
-	/* Eat any extra spaces/tabs/newlines that might be present */
-	while (*in && **in && ((**in == ' ') ||
-			       (**in == '\t') ||
-			       (**in == '\n'))) {
-		**in = '\0';
-		*in = *in + 1;
-	}
-
-	return ret_ptr;
-}
-
-
-/*
- * Get a token from the input file; return 0 if end of file is reached
- */
-static int dgap_gettok(char **in)
-{
-	char *w;
-	struct toklist *t;
-
-	if (strstr(dgap_cword, "board")) {
-		w = dgap_getword(in);
-		if (!w)
-			return 0;
-		snprintf(dgap_cword, MAXCWORD, "%s", w);
-		for (t = dgap_brdtype; t->token != 0; t++) {
-			if (!strcmp(w, t->string))
-				return t->token;
-		}
-	} else {
-		while ((w = dgap_getword(in))) {
-			snprintf(dgap_cword, MAXCWORD, "%s", w);
-			for (t = dgap_tlist; t->token != 0; t++) {
-				if (!strcmp(w, t->string))
-					return t->token;
-			}
-		}
-	}
-
-	return 0;
-}
-
-/*
- * dgap_checknode: see if all the necessary info has been supplied for a node
- * before creating the next node.
- */
-static int dgap_checknode(struct cnode *p)
-{
-	switch (p->type) {
-	case LNODE:
-		if (p->u.line.v_speed == 0) {
-			pr_err("line speed not specified");
-			return 1;
-		}
-		return 0;
-
-	case CNODE:
-		if (p->u.conc.v_speed == 0) {
-			pr_err("concentrator line speed not specified");
-			return 1;
-		}
-		if (p->u.conc.v_nport == 0) {
-			pr_err("number of ports on concentrator not specified");
-			return 1;
-		}
-		if (p->u.conc.v_id == 0) {
-			pr_err("concentrator id letter not specified");
-			return 1;
-		}
-		return 0;
-
-	case MNODE:
-		if (p->u.module.v_nport == 0) {
-			pr_err("number of ports on EBI module not specified");
-			return 1;
-		}
-		if (p->u.module.v_id == 0) {
-			pr_err("EBI module id letter not specified");
-			return 1;
-		}
-		return 0;
-	}
-	return 0;
-}
-
-/*
- * Given a board pointer, returns whether we should use interrupts or not.
- */
-static uint dgap_config_get_useintr(struct board_t *bd)
-{
-	struct cnode *p;
-
-	if (!bd)
-		return 0;
-
-	for (p = bd->bd_config; p; p = p->next) {
-		if (p->type == INTRNODE) {
-			/*
-			 * check for pcxr types.
-			 */
-			return p->u.useintr;
-		}
-	}
-
-	/* If not found, then don't turn on interrupts. */
-	return 0;
-}
-
-/*
- * Given a board pointer, returns whether we turn on altpin or not.
- */
-static uint dgap_config_get_altpin(struct board_t *bd)
-{
-	struct cnode *p;
-
-	if (!bd)
-		return 0;
-
-	for (p = bd->bd_config; p; p = p->next) {
-		if (p->type == ANODE) {
-			/*
-			 * check for pcxr types.
-			 */
-			return p->u.altpin;
-		}
-	}
-
-	/* If not found, then don't turn on interrupts. */
-	return 0;
-}
-
-/*
- * Given a specific type of board, if found, detached link and
- * returns the first occurrence in the list.
- */
-static struct cnode *dgap_find_config(int type, int bus, int slot)
-{
-	struct cnode *p, *prev, *prev2, *found;
-
-	p = &dgap_head;
-
-	while (p->next) {
-		prev = p;
-		p = p->next;
-
-		if (p->type != BNODE)
-			continue;
-
-		if (p->u.board.type != type)
-			continue;
-
-		if (p->u.board.v_pcibus &&
-		    p->u.board.pcibus != bus)
-			continue;
-
-		if (p->u.board.v_pcislot &&
-		    p->u.board.pcislot != slot)
-			continue;
-
-		found = p;
-		/*
-		 * Keep walking thru the list till we
-		 * find the next board.
-		 */
-		while (p->next) {
-			prev2 = p;
-			p = p->next;
-
-			if (p->type != BNODE)
-				continue;
-
-			/*
-			 * Mark the end of our 1 board
-			 * chain of configs.
-			 */
-			prev2->next = NULL;
-
-			/*
-			 * Link the "next" board to the
-			 * previous board, effectively
-			 * "unlinking" our board from
-			 * the main config.
-			 */
-			prev->next = p;
-
-			return found;
-		}
-		/*
-		 * It must be the last board in the list.
-		 */
-		prev->next = NULL;
-		return found;
-	}
-	return NULL;
-}
-
-/*
- * Given a board pointer, walks the config link, counting up
- * all ports user specified should be on the board.
- * (This does NOT mean they are all actually present right now tho)
- */
-static uint dgap_config_get_num_prts(struct board_t *bd)
-{
-	int count = 0;
-	struct cnode *p;
-
-	if (!bd)
-		return 0;
-
-	for (p = bd->bd_config; p; p = p->next) {
-		switch (p->type) {
-		case BNODE:
-			/*
-			 * check for pcxr types.
-			 */
-			if (p->u.board.type > EPCFE)
-				count += p->u.board.nport;
-			break;
-		case CNODE:
-			count += p->u.conc.nport;
-			break;
-		case MNODE:
-			count += p->u.module.nport;
-			break;
-		}
-	}
-	return count;
-}
-
-static char *dgap_create_config_string(struct board_t *bd, char *string)
-{
-	char *ptr = string;
-	struct cnode *p;
-	struct cnode *q;
-	int speed;
-
-	if (!bd) {
-		*ptr = 0xff;
-		return string;
-	}
-
-	for (p = bd->bd_config; p; p = p->next) {
-		switch (p->type) {
-		case LNODE:
-			*ptr = '\0';
-			ptr++;
-			*ptr = p->u.line.speed;
-			ptr++;
-			break;
-		case CNODE:
-			/*
-			 * Because the EPC/con concentrators can have EM modules
-			 * hanging off of them, we have to walk ahead in the
-			 * list and keep adding the number of ports on each EM
-			 * to the config. UGH!
-			 */
-			speed = p->u.conc.speed;
-			q = p->next;
-			if (q && (q->type == MNODE)) {
-				*ptr = (p->u.conc.nport + 0x80);
-				ptr++;
-				p = q;
-				while (q->next && (q->next->type) == MNODE) {
-					*ptr = (q->u.module.nport + 0x80);
-					ptr++;
-					p = q;
-					q = q->next;
-				}
-				*ptr = q->u.module.nport;
-				ptr++;
-			} else {
-				*ptr = p->u.conc.nport;
-				ptr++;
-			}
-
-			*ptr = speed;
-			ptr++;
-			break;
-		}
-	}
-
-	*ptr = 0xff;
-	return string;
-}
-
-/*
- * Parse a configuration file read into memory as a string.
- */
-static int dgap_parsefile(char **in)
-{
-	struct cnode *p, *brd, *line, *conc;
-	int rc;
-	char *s;
-	int linecnt = 0;
-
-	p = &dgap_head;
-	brd = line = conc = NULL;
-
-	/* perhaps we are adding to an existing list? */
-	while (p->next)
-		p = p->next;
-
-	/* file must start with a BEGIN */
-	while ((rc = dgap_gettok(in)) != BEGIN) {
-		if (rc == 0) {
-			pr_err("unexpected EOF");
-			return -1;
-		}
-	}
-
-	for (; ;) {
-		int board_type = 0;
-		int conc_type = 0;
-		int module_type = 0;
-
-		rc = dgap_gettok(in);
-		if (rc == 0) {
-			pr_err("unexpected EOF");
-			return -1;
-		}
-
-		switch (rc) {
-		case BEGIN:	/* should only be 1 begin */
-			pr_err("unexpected config_begin\n");
-			return -1;
-
-		case END:
-			return 0;
-
-		case BOARD:	/* board info */
-			if (dgap_checknode(p))
-				return -1;
-
-			p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
-			if (!p->next)
-				return -ENOMEM;
-
-			p = p->next;
-
-			p->type = BNODE;
-			p->u.board.status = kstrdup("No", GFP_KERNEL);
-			line = conc = NULL;
-			brd = p;
-			linecnt = -1;
-
-			board_type = dgap_gettok(in);
-			if (board_type == 0) {
-				pr_err("board !!type not specified");
-				return -1;
-			}
-
-			p->u.board.type = board_type;
-
-			break;
-
-		case MEM:	/* memory address */
-			if (p->type != BNODE) {
-				pr_err("memory address only valid for boards");
-				return -1;
-			}
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpected end of file");
-				return -1;
-			}
-			kfree(p->u.board.addrstr);
-			p->u.board.addrstr = kstrdup(s, GFP_KERNEL);
-			if (kstrtoul(s, 0, &p->u.board.addr)) {
-				pr_err("bad number for memory address");
-				return -1;
-			}
-			p->u.board.v_addr = 1;
-			break;
-
-		case PCIINFO:	/* pci information */
-			if (p->type != BNODE) {
-				pr_err("memory address only valid for boards");
-				return -1;
-			}
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpected end of file");
-				return -1;
-			}
-			kfree(p->u.board.pcibusstr);
-			p->u.board.pcibusstr = kstrdup(s, GFP_KERNEL);
-			if (kstrtoul(s, 0, &p->u.board.pcibus)) {
-				pr_err("bad number for pci bus");
-				return -1;
-			}
-			p->u.board.v_pcibus = 1;
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpected end of file");
-				return -1;
-			}
-			kfree(p->u.board.pcislotstr);
-			p->u.board.pcislotstr = kstrdup(s, GFP_KERNEL);
-			if (kstrtoul(s, 0, &p->u.board.pcislot)) {
-				pr_err("bad number for pci slot");
-				return -1;
-			}
-			p->u.board.v_pcislot = 1;
-			break;
-
-		case METHOD:
-			if (p->type != BNODE) {
-				pr_err("install method only valid for boards");
-				return -1;
-			}
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpected end of file");
-				return -1;
-			}
-			kfree(p->u.board.method);
-			p->u.board.method = kstrdup(s, GFP_KERNEL);
-			p->u.board.v_method = 1;
-			break;
-
-		case STATUS:
-			if (p->type != BNODE) {
-				pr_err("config status only valid for boards");
-				return -1;
-			}
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpected end of file");
-				return -1;
-			}
-			kfree(p->u.board.status);
-			p->u.board.status = kstrdup(s, GFP_KERNEL);
-			break;
-
-		case NPORTS:	/* number of ports */
-			if (p->type == BNODE) {
-				s = dgap_getword(in);
-				if (!s) {
-					pr_err("unexpected end of file");
-					return -1;
-				}
-				if (kstrtol(s, 0, &p->u.board.nport)) {
-					pr_err("bad number for number of ports");
-					return -1;
-				}
-				p->u.board.v_nport = 1;
-			} else if (p->type == CNODE) {
-				s = dgap_getword(in);
-				if (!s) {
-					pr_err("unexpected end of file");
-					return -1;
-				}
-				if (kstrtol(s, 0, &p->u.conc.nport)) {
-					pr_err("bad number for number of ports");
-					return -1;
-				}
-				p->u.conc.v_nport = 1;
-			} else if (p->type == MNODE) {
-				s = dgap_getword(in);
-				if (!s) {
-					pr_err("unexpected end of file");
-					return -1;
-				}
-				if (kstrtol(s, 0, &p->u.module.nport)) {
-					pr_err("bad number for number of ports");
-					return -1;
-				}
-				p->u.module.v_nport = 1;
-			} else {
-				pr_err("nports only valid for concentrators or modules");
-				return -1;
-			}
-			break;
-
-		case ID:	/* letter ID used in tty name */
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpected end of file");
-				return -1;
-			}
-			kfree(p->u.board.status);
-			p->u.board.status = kstrdup(s, GFP_KERNEL);
-
-			if (p->type == CNODE) {
-				kfree(p->u.conc.id);
-				p->u.conc.id = kstrdup(s, GFP_KERNEL);
-				p->u.conc.v_id = 1;
-			} else if (p->type == MNODE) {
-				kfree(p->u.module.id);
-				p->u.module.id = kstrdup(s, GFP_KERNEL);
-				p->u.module.v_id = 1;
-			} else {
-				pr_err("id only valid for concentrators or modules");
-				return -1;
-			}
-			break;
-
-		case STARTO:	/* start offset of ID */
-			if (p->type == BNODE) {
-				s = dgap_getword(in);
-				if (!s) {
-					pr_err("unexpected end of file");
-					return -1;
-				}
-				if (kstrtol(s, 0, &p->u.board.start)) {
-					pr_err("bad number for start of tty count");
-					return -1;
-				}
-				p->u.board.v_start = 1;
-			} else if (p->type == CNODE) {
-				s = dgap_getword(in);
-				if (!s) {
-					pr_err("unexpected end of file");
-					return -1;
-				}
-				if (kstrtol(s, 0, &p->u.conc.start)) {
-					pr_err("bad number for start of tty count");
-					return -1;
-				}
-				p->u.conc.v_start = 1;
-			} else if (p->type == MNODE) {
-				s = dgap_getword(in);
-				if (!s) {
-					pr_err("unexpected end of file");
-					return -1;
-				}
-				if (kstrtol(s, 0, &p->u.module.start)) {
-					pr_err("bad number for start of tty count");
-					return -1;
-				}
-				p->u.module.v_start = 1;
-			} else {
-				pr_err("start only valid for concentrators or modules");
-				return -1;
-			}
-			break;
-
-		case TTYN:	/* tty name prefix */
-			if (dgap_checknode(p))
-				return -1;
-
-			p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
-			if (!p->next)
-				return -ENOMEM;
-
-			p = p->next;
-			p->type = TNODE;
-
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpeced end of file");
-				return -1;
-			}
-			p->u.ttyname = kstrdup(s, GFP_KERNEL);
-			if (!p->u.ttyname)
-				return -1;
-
-			break;
-
-		case CU:	/* cu name prefix */
-			if (dgap_checknode(p))
-				return -1;
-
-			p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
-			if (!p->next)
-				return -ENOMEM;
-
-			p = p->next;
-			p->type = CUNODE;
-
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpeced end of file");
-				return -1;
-			}
-			p->u.cuname = kstrdup(s, GFP_KERNEL);
-			if (!p->u.cuname)
-				return -1;
-
-			break;
-
-		case LINE:	/* line information */
-			if (dgap_checknode(p))
-				return -1;
-			if (!brd) {
-				pr_err("must specify board before line info");
-				return -1;
-			}
-			switch (brd->u.board.type) {
-			case PPCM:
-				pr_err("line not valid for PC/em");
-				return -1;
-			}
-
-			p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
-			if (!p->next)
-				return -ENOMEM;
-
-			p = p->next;
-			p->type = LNODE;
-			conc = NULL;
-			line = p;
-			linecnt++;
-			break;
-
-		case CONC:	/* concentrator information */
-			if (dgap_checknode(p))
-				return -1;
-			if (!line) {
-				pr_err("must specify line info before concentrator");
-				return -1;
-			}
-
-			p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
-			if (!p->next)
-				return -ENOMEM;
-
-			p = p->next;
-			p->type = CNODE;
-			conc = p;
-
-			if (linecnt)
-				brd->u.board.conc2++;
-			else
-				brd->u.board.conc1++;
-
-			conc_type = dgap_gettok(in);
-			if (conc_type == 0 ||
-			    (conc_type != CX && conc_type != EPC)) {
-				pr_err("failed to set a type of concentratros");
-				return -1;
-			}
-
-			p->u.conc.type = conc_type;
-
-			break;
-
-		case MOD:	/* EBI module */
-			if (dgap_checknode(p))
-				return -1;
-			if (!brd) {
-				pr_err("must specify board info before EBI modules");
-				return -1;
-			}
-			switch (brd->u.board.type) {
-			case PPCM:
-				linecnt = 0;
-				break;
-			default:
-				if (!conc) {
-					pr_err("must specify concentrator info before EBI module");
-					return -1;
-				}
-			}
-
-			p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
-			if (!p->next)
-				return -ENOMEM;
-
-			p = p->next;
-			p->type = MNODE;
-
-			if (linecnt)
-				brd->u.board.module2++;
-			else
-				brd->u.board.module1++;
-
-			module_type = dgap_gettok(in);
-			if (module_type == 0 ||
-			    (module_type != PORTS && module_type != MODEM)) {
-				pr_err("failed to set a type of module");
-				return -1;
-			}
-
-			p->u.module.type = module_type;
-
-			break;
-
-		case CABLE:
-			if (p->type == LNODE) {
-				s = dgap_getword(in);
-				if (!s) {
-					pr_err("unexpected end of file");
-					return -1;
-				}
-				kfree(p->u.line.cable);
-				p->u.line.cable = kstrdup(s, GFP_KERNEL);
-				p->u.line.v_cable = 1;
-			}
-			break;
-
-		case SPEED:	/* sync line speed indication */
-			if (p->type == LNODE) {
-				s = dgap_getword(in);
-				if (!s) {
-					pr_err("unexpected end of file");
-					return -1;
-				}
-				if (kstrtol(s, 0, &p->u.line.speed)) {
-					pr_err("bad number for line speed");
-					return -1;
-				}
-				p->u.line.v_speed = 1;
-			} else if (p->type == CNODE) {
-				s = dgap_getword(in);
-				if (!s) {
-					pr_err("unexpected end of file");
-					return -1;
-				}
-				if (kstrtol(s, 0, &p->u.conc.speed)) {
-					pr_err("bad number for line speed");
-					return -1;
-				}
-				p->u.conc.v_speed = 1;
-			} else {
-				pr_err("speed valid only for lines or concentrators.");
-				return -1;
-			}
-			break;
-
-		case CONNECT:
-			if (p->type == CNODE) {
-				s = dgap_getword(in);
-				if (!s) {
-					pr_err("unexpected end of file");
-					return -1;
-				}
-				kfree(p->u.conc.connect);
-				p->u.conc.connect = kstrdup(s, GFP_KERNEL);
-				p->u.conc.v_connect = 1;
-			}
-			break;
-		case PRINT:	/* transparent print name prefix */
-			if (dgap_checknode(p))
-				return -1;
-
-			p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
-			if (!p->next)
-				return -ENOMEM;
-
-			p = p->next;
-			p->type = PNODE;
-
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpeced end of file");
-				return -1;
-			}
-			p->u.printname = kstrdup(s, GFP_KERNEL);
-			if (!p->u.printname)
-				return -1;
-
-			break;
-
-		case CMAJOR:	/* major number */
-			if (dgap_checknode(p))
-				return -1;
-
-			p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
-			if (!p->next)
-				return -ENOMEM;
-
-			p = p->next;
-			p->type = JNODE;
-
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpected end of file");
-				return -1;
-			}
-			if (kstrtol(s, 0, &p->u.majornumber)) {
-				pr_err("bad number for major number");
-				return -1;
-			}
-			break;
-
-		case ALTPIN:	/* altpin setting */
-			if (dgap_checknode(p))
-				return -1;
-
-			p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
-			if (!p->next)
-				return -ENOMEM;
-
-			p = p->next;
-			p->type = ANODE;
-
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpected end of file");
-				return -1;
-			}
-			if (kstrtol(s, 0, &p->u.altpin)) {
-				pr_err("bad number for altpin");
-				return -1;
-			}
-			break;
-
-		case USEINTR:		/* enable interrupt setting */
-			if (dgap_checknode(p))
-				return -1;
-
-			p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
-			if (!p->next)
-				return -ENOMEM;
-
-			p = p->next;
-			p->type = INTRNODE;
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpected end of file");
-				return -1;
-			}
-			if (kstrtol(s, 0, &p->u.useintr)) {
-				pr_err("bad number for useintr");
-				return -1;
-			}
-			break;
-
-		case TTSIZ:	/* size of tty structure */
-			if (dgap_checknode(p))
-				return -1;
-
-			p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
-			if (!p->next)
-				return -ENOMEM;
-
-			p = p->next;
-			p->type = TSNODE;
-
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpected end of file");
-				return -1;
-			}
-			if (kstrtol(s, 0, &p->u.ttysize)) {
-				pr_err("bad number for ttysize");
-				return -1;
-			}
-			break;
-
-		case CHSIZ:	/* channel structure size */
-			if (dgap_checknode(p))
-				return -1;
-
-			p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
-			if (!p->next)
-				return -ENOMEM;
-
-			p = p->next;
-			p->type = CSNODE;
-
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpected end of file");
-				return -1;
-			}
-			if (kstrtol(s, 0, &p->u.chsize)) {
-				pr_err("bad number for chsize");
-				return -1;
-			}
-			break;
-
-		case BSSIZ:	/* board structure size */
-			if (dgap_checknode(p))
-				return -1;
-
-			p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
-			if (!p->next)
-				return -ENOMEM;
-
-			p = p->next;
-			p->type = BSNODE;
-
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpected end of file");
-				return -1;
-			}
-			if (kstrtol(s, 0, &p->u.bssize)) {
-				pr_err("bad number for bssize");
-				return -1;
-			}
-			break;
-
-		case UNTSIZ:	/* sched structure size */
-			if (dgap_checknode(p))
-				return -1;
-
-			p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
-			if (!p->next)
-				return -ENOMEM;
-
-			p = p->next;
-			p->type = USNODE;
-
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpected end of file");
-				return -1;
-			}
-			if (kstrtol(s, 0, &p->u.unsize)) {
-				pr_err("bad number for schedsize");
-				return -1;
-			}
-			break;
-
-		case F2SIZ:	/* f2200 structure size */
-			if (dgap_checknode(p))
-				return -1;
-
-			p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
-			if (!p->next)
-				return -ENOMEM;
-
-			p = p->next;
-			p->type = FSNODE;
-
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpected end of file");
-				return -1;
-			}
-			if (kstrtol(s, 0, &p->u.f2size)) {
-				pr_err("bad number for f2200size");
-				return -1;
-			}
-			break;
-
-		case VPSIZ:	/* vpix structure size */
-			if (dgap_checknode(p))
-				return -1;
-
-			p->next = kzalloc(sizeof(struct cnode), GFP_KERNEL);
-			if (!p->next)
-				return -ENOMEM;
-
-			p = p->next;
-			p->type = VSNODE;
-
-			s = dgap_getword(in);
-			if (!s) {
-				pr_err("unexpected end of file");
-				return -1;
-			}
-			if (kstrtol(s, 0, &p->u.vpixsize)) {
-				pr_err("bad number for vpixsize");
-				return -1;
-			}
-			break;
-		}
-	}
-}
-
-static void dgap_cleanup_nodes(void)
-{
-	struct cnode *p;
-
-	p = &dgap_head;
-
-	while (p) {
-		struct cnode *tmp = p->next;
-
-		if (p->type == NULLNODE) {
-			p = tmp;
-			continue;
-		}
-
-		switch (p->type) {
-		case BNODE:
-			kfree(p->u.board.addrstr);
-			kfree(p->u.board.pcibusstr);
-			kfree(p->u.board.pcislotstr);
-			kfree(p->u.board.method);
-			break;
-		case CNODE:
-			kfree(p->u.conc.id);
-			kfree(p->u.conc.connect);
-			break;
-		case MNODE:
-			kfree(p->u.module.id);
-			break;
-		case TNODE:
-			kfree(p->u.ttyname);
-			break;
-		case CUNODE:
-			kfree(p->u.cuname);
-			break;
-		case LNODE:
-			kfree(p->u.line.cable);
-			break;
-		case PNODE:
-			kfree(p->u.printname);
-			break;
-		}
-
-		kfree(p->u.board.status);
-		kfree(p);
-		p = tmp;
-	}
-}
-
-/*
- * Retrives the current custom baud rate from FEP memory,
- * and returns it back to the user.
- * Returns 0 on error.
- */
-static uint dgap_get_custom_baud(struct channel_t *ch)
-{
-	u8 __iomem *vaddr;
-	ulong offset;
-
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return 0;
-
-	if (!ch->ch_bd || ch->ch_bd->magic != DGAP_BOARD_MAGIC)
-		return 0;
-
-	if (!(ch->ch_bd->bd_flags & BD_FEP5PLUS))
-		return 0;
-
-	vaddr = ch->ch_bd->re_map_membase;
-
-	if (!vaddr)
-		return 0;
-
-	/*
-	 * Go get from fep mem, what the fep
-	 * believes the custom baud rate is.
-	 */
-	offset = (ioread16(vaddr + ECS_SEG) << 4) + (ch->ch_portnum * 0x28)
-	       + LINE_SPEED;
-
-	return readw(vaddr + offset);
-}
-
-/*
- * Remap PCI memory.
- */
-static int dgap_remap(struct board_t *brd)
-{
-	if (!brd || brd->magic != DGAP_BOARD_MAGIC)
-		return -EIO;
-
-	if (!request_mem_region(brd->membase, 0x200000, "dgap"))
-		return -ENOMEM;
-
-	if (!request_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000, "dgap"))
-		goto err_req_mem;
-
-	brd->re_map_membase = ioremap(brd->membase, 0x200000);
-	if (!brd->re_map_membase)
-		goto err_remap_mem;
-
-	brd->re_map_port = ioremap((brd->membase + PCI_IO_OFFSET), 0x200000);
-	if (!brd->re_map_port)
-		goto err_remap_port;
-
-	return 0;
-
-err_remap_port:
-	iounmap(brd->re_map_membase);
-err_remap_mem:
-	release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
-err_req_mem:
-	release_mem_region(brd->membase, 0x200000);
-
-	return -ENOMEM;
-}
-
-static void dgap_unmap(struct board_t *brd)
-{
-	iounmap(brd->re_map_port);
-	iounmap(brd->re_map_membase);
-	release_mem_region(brd->membase + PCI_IO_OFFSET, 0x200000);
-	release_mem_region(brd->membase, 0x200000);
-}
-
-/*
- * dgap_parity_scan()
- *
- * Convert the FEP5 way of reporting parity errors and breaks into
- * the Linux line discipline way.
- */
-static void dgap_parity_scan(struct channel_t *ch, unsigned char *cbuf,
-			     unsigned char *fbuf, int *len)
-{
-	int l = *len;
-	int count = 0;
-	unsigned char *in, *cout, *fout;
-	unsigned char c;
-
-	in = cbuf;
-	cout = cbuf;
-	fout = fbuf;
-
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	while (l--) {
-		c = *in++;
-		switch (ch->pscan_state) {
-		default:
-			/* reset to sanity and fall through */
-			ch->pscan_state = 0;
-
-		case 0:
-			/* No FF seen yet */
-			if (c == (unsigned char)'\377')
-				/* delete this character from stream */
-				ch->pscan_state = 1;
-			else {
-				*cout++ = c;
-				*fout++ = TTY_NORMAL;
-				count += 1;
-			}
-			break;
-
-		case 1:
-			/* first FF seen */
-			if (c == (unsigned char)'\377') {
-				/* doubled ff, transform to single ff */
-				*cout++ = c;
-				*fout++ = TTY_NORMAL;
-				count += 1;
-				ch->pscan_state = 0;
-			} else {
-				/* save value examination in next state */
-				ch->pscan_savechar = c;
-				ch->pscan_state = 2;
-			}
-			break;
-
-		case 2:
-			/* third character of ff sequence */
-
-			*cout++ = c;
-
-			if (ch->pscan_savechar == 0x0) {
-				if (c == 0x0) {
-					ch->ch_err_break++;
-					*fout++ = TTY_BREAK;
-				} else {
-					ch->ch_err_parity++;
-					*fout++ = TTY_PARITY;
-				}
-			}
-
-			count += 1;
-			ch->pscan_state = 0;
-		}
-	}
-	*len = count;
-}
-
-/*=======================================================================
- *
- *      dgap_input - Process received data.
- *
- *              ch      - Pointer to channel structure.
- *
- *=======================================================================*/
-
-static void dgap_input(struct channel_t *ch)
-{
-	struct board_t *bd;
-	struct bs_t __iomem *bs;
-	struct tty_struct *tp;
-	struct tty_ldisc *ld;
-	uint rmask;
-	uint head;
-	uint tail;
-	int data_len;
-	ulong lock_flags;
-	ulong lock_flags2;
-	int flip_len;
-	int len;
-	int n;
-	u8 *buf;
-	u8 tmpchar;
-	int s;
-
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	tp = ch->ch_tun.un_tty;
-
-	bs  = ch->ch_bs;
-	if (!bs)
-		return;
-
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return;
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-	/*
-	 *      Figure the number of characters in the buffer.
-	 *      Exit immediately if none.
-	 */
-
-	rmask = ch->ch_rsize - 1;
-
-	head = readw(&bs->rx_head);
-	head &= rmask;
-	tail = readw(&bs->rx_tail);
-	tail &= rmask;
-
-	data_len = (head - tail) & rmask;
-
-	if (data_len == 0) {
-		writeb(1, &bs->idata);
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return;
-	}
-
-	/*
-	 * If the device is not open, or CREAD is off, flush
-	 * input data and return immediately.
-	 */
-	if ((bd->state != BOARD_READY) || !tp  ||
-	    (tp->magic != TTY_MAGIC) ||
-	    !(ch->ch_tun.un_flags & UN_ISOPEN) ||
-	    !(tp->termios.c_cflag & CREAD) ||
-	    (ch->ch_tun.un_flags & UN_CLOSING)) {
-		writew(head, &bs->rx_tail);
-		writeb(1, &bs->idata);
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return;
-	}
-
-	/*
-	 * If we are throttled, simply don't read any data.
-	 */
-	if (ch->ch_flags & CH_RXBLOCK) {
-		writeb(1, &bs->idata);
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return;
-	}
-
-	/*
-	 *      Ignore oruns.
-	 */
-	tmpchar = readb(&bs->orun);
-	if (tmpchar) {
-		ch->ch_err_overrun++;
-		writeb(0, &bs->orun);
-	}
-
-	/* Decide how much data we can send into the tty layer */
-	flip_len = TTY_FLIPBUF_SIZE;
-
-	/* Chop down the length, if needed */
-	len = min(data_len, flip_len);
-	len = min(len, (N_TTY_BUF_SIZE - 1));
-
-	ld = tty_ldisc_ref(tp);
-
-#ifdef TTY_DONT_FLIP
-	/*
-	 * If the DONT_FLIP flag is on, don't flush our buffer, and act
-	 * like the ld doesn't have any space to put the data right now.
-	 */
-	if (test_bit(TTY_DONT_FLIP, &tp->flags))
-		len = 0;
-#endif
-
-	/*
-	 * If we were unable to get a reference to the ld,
-	 * don't flush our buffer, and act like the ld doesn't
-	 * have any space to put the data right now.
-	 */
-	if (!ld) {
-		len = 0;
-	} else {
-		/*
-		 * If ld doesn't have a pointer to a receive_buf function,
-		 * flush the data, then act like the ld doesn't have any
-		 * space to put the data right now.
-		 */
-		if (!ld->ops->receive_buf) {
-			writew(head, &bs->rx_tail);
-			len = 0;
-		}
-	}
-
-	if (len <= 0) {
-		writeb(1, &bs->idata);
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		if (ld)
-			tty_ldisc_deref(ld);
-		return;
-	}
-
-	buf = ch->ch_bd->flipbuf;
-	n = len;
-
-	/*
-	 * n now contains the most amount of data we can copy,
-	 * bounded either by our buffer size or the amount
-	 * of data the card actually has pending...
-	 */
-	while (n) {
-		s = ((head >= tail) ? head : ch->ch_rsize) - tail;
-		s = min(s, n);
-
-		if (s <= 0)
-			break;
-
-		memcpy_fromio(buf, ch->ch_raddr + tail, s);
-
-		tail += s;
-		buf += s;
-
-		n -= s;
-		/* Flip queue if needed */
-		tail &= rmask;
-	}
-
-	writew(tail, &bs->rx_tail);
-	writeb(1, &bs->idata);
-	ch->ch_rxcount += len;
-
-	/*
-	 * If we are completely raw, we don't need to go through a lot
-	 * of the tty layers that exist.
-	 * In this case, we take the shortest and fastest route we
-	 * can to relay the data to the user.
-	 *
-	 * On the other hand, if we are not raw, we need to go through
-	 * the tty layer, which has its API more well defined.
-	 */
-	if (I_PARMRK(tp) || I_BRKINT(tp) || I_INPCK(tp)) {
-		dgap_parity_scan(ch, ch->ch_bd->flipbuf,
-				 ch->ch_bd->flipflagbuf, &len);
-
-		len = tty_buffer_request_room(tp->port, len);
-		tty_insert_flip_string_flags(tp->port, ch->ch_bd->flipbuf,
-					     ch->ch_bd->flipflagbuf, len);
-	} else {
-		len = tty_buffer_request_room(tp->port, len);
-		tty_insert_flip_string(tp->port, ch->ch_bd->flipbuf, len);
-	}
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-	/* Tell the tty layer its okay to "eat" the data now */
-	tty_flip_buffer_push(tp->port);
-
-	if (ld)
-		tty_ldisc_deref(ld);
-}
-
-static void dgap_write_wakeup(struct board_t *bd, struct channel_t *ch,
-			      struct un_t *un, u32 mask,
-			      unsigned long *irq_flags1,
-			      unsigned long *irq_flags2)
-{
-	if (!(un->un_flags & mask))
-		return;
-
-	un->un_flags &= ~mask;
-
-	if (!(un->un_flags & UN_ISOPEN))
-		return;
-
-	if ((un->un_tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
-	    un->un_tty->ldisc->ops->write_wakeup) {
-		spin_unlock_irqrestore(&ch->ch_lock, *irq_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, *irq_flags1);
-
-		(un->un_tty->ldisc->ops->write_wakeup)(un->un_tty);
-
-		spin_lock_irqsave(&bd->bd_lock, *irq_flags1);
-		spin_lock_irqsave(&ch->ch_lock, *irq_flags2);
-	}
-	wake_up_interruptible(&un->un_tty->write_wait);
-	wake_up_interruptible(&un->un_flags_wait);
-}
-
-/************************************************************************
- * Determines when CARRIER changes state and takes appropriate
- * action.
- ************************************************************************/
-static void dgap_carrier(struct channel_t *ch)
-{
-	struct board_t *bd;
-
-	int virt_carrier = 0;
-	int phys_carrier = 0;
-
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	bd = ch->ch_bd;
-
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return;
-
-	/* Make sure altpin is always set correctly */
-	if (ch->ch_digi.digi_flags & DIGI_ALTPIN) {
-		ch->ch_dsr      = DM_CD;
-		ch->ch_cd       = DM_DSR;
-	} else {
-		ch->ch_dsr      = DM_DSR;
-		ch->ch_cd       = DM_CD;
-	}
-
-	if (ch->ch_mistat & D_CD(ch))
-		phys_carrier = 1;
-
-	if (ch->ch_digi.digi_flags & DIGI_FORCEDCD)
-		virt_carrier = 1;
-
-	if (ch->ch_c_cflag & CLOCAL)
-		virt_carrier = 1;
-
-	/*
-	 * Test for a VIRTUAL carrier transition to HIGH.
-	 */
-	if (((ch->ch_flags & CH_FCAR) == 0) && (virt_carrier == 1)) {
-		/*
-		 * When carrier rises, wake any threads waiting
-		 * for carrier in the open routine.
-		 */
-
-		if (waitqueue_active(&(ch->ch_flags_wait)))
-			wake_up_interruptible(&ch->ch_flags_wait);
-	}
-
-	/*
-	 * Test for a PHYSICAL carrier transition to HIGH.
-	 */
-	if (((ch->ch_flags & CH_CD) == 0) && (phys_carrier == 1)) {
-		/*
-		 * When carrier rises, wake any threads waiting
-		 * for carrier in the open routine.
-		 */
-
-		if (waitqueue_active(&(ch->ch_flags_wait)))
-			wake_up_interruptible(&ch->ch_flags_wait);
-	}
-
-	/*
-	 *  Test for a PHYSICAL transition to low, so long as we aren't
-	 *  currently ignoring physical transitions (which is what "virtual
-	 *  carrier" indicates).
-	 *
-	 *  The transition of the virtual carrier to low really doesn't
-	 *  matter... it really only means "ignore carrier state", not
-	 *  "make pretend that carrier is there".
-	 */
-	if ((virt_carrier == 0) &&
-	    ((ch->ch_flags & CH_CD) != 0) &&
-	    (phys_carrier == 0)) {
-		/*
-		 *   When carrier drops:
-		 *
-		 *   Drop carrier on all open units.
-		 *
-		 *   Flush queues, waking up any task waiting in the
-		 *   line discipline.
-		 *
-		 *   Send a hangup to the control terminal.
-		 *
-		 *   Enable all select calls.
-		 */
-		if (waitqueue_active(&(ch->ch_flags_wait)))
-			wake_up_interruptible(&ch->ch_flags_wait);
-
-		if (ch->ch_tun.un_open_count > 0)
-			tty_hangup(ch->ch_tun.un_tty);
-
-		if (ch->ch_pun.un_open_count > 0)
-			tty_hangup(ch->ch_pun.un_tty);
-	}
-
-	/*
-	 *  Make sure that our cached values reflect the current reality.
-	 */
-	if (virt_carrier == 1)
-		ch->ch_flags |= CH_FCAR;
-	else
-		ch->ch_flags &= ~CH_FCAR;
-
-	if (phys_carrier == 1)
-		ch->ch_flags |= CH_CD;
-	else
-		ch->ch_flags &= ~CH_CD;
-}
-
-/*=======================================================================
- *
- *      dgap_event - FEP to host event processing routine.
- *
- *              bd     - Board of current event.
- *
- *=======================================================================*/
-static int dgap_event(struct board_t *bd)
-{
-	struct channel_t *ch;
-	ulong lock_flags;
-	ulong lock_flags2;
-	struct bs_t __iomem *bs;
-	u8 __iomem *event;
-	u8 __iomem *vaddr;
-	struct ev_t __iomem *eaddr;
-	uint head;
-	uint tail;
-	int port;
-	int reason;
-	int modem;
-
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return -EIO;
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-
-	vaddr = bd->re_map_membase;
-
-	if (!vaddr) {
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return -EIO;
-	}
-
-	eaddr = (struct ev_t __iomem *)(vaddr + EVBUF);
-
-	/* Get our head and tail */
-	head = readw(&eaddr->ev_head);
-	tail = readw(&eaddr->ev_tail);
-
-	/*
-	 * Forget it if pointers out of range.
-	 */
-
-	if (head >= EVMAX - EVSTART || tail >= EVMAX - EVSTART ||
-	    (head | tail) & 03) {
-		/* Let go of board lock */
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return -EIO;
-	}
-
-	/*
-	 * Loop to process all the events in the buffer.
-	 */
-	while (tail != head) {
-		/*
-		 * Get interrupt information.
-		 */
-
-		event = bd->re_map_membase + tail + EVSTART;
-
-		port   = ioread8(event);
-		reason = ioread8(event + 1);
-		modem  = ioread8(event + 2);
-		ioread8(event + 3);
-
-		/*
-		 * Make sure the interrupt is valid.
-		 */
-		if (port >= bd->nasync)
-			goto next;
-
-		if (!(reason & (IFMODEM | IFBREAK | IFTLW | IFTEM | IFDATA)))
-			goto next;
-
-		ch = bd->channels[port];
-
-		if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-			goto next;
-
-		/*
-		 * If we have made it here, the event was valid.
-		 * Lock down the channel.
-		 */
-		spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-		bs = ch->ch_bs;
-
-		if (!bs) {
-			spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-			goto next;
-		}
-
-		/*
-		 * Process received data.
-		 */
-		if (reason & IFDATA) {
-			/*
-			 * ALL LOCKS *MUST* BE DROPPED BEFORE CALLING INPUT!
-			 * input could send some data to ld, which in turn
-			 * could do a callback to one of our other functions.
-			 */
-			spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-			spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-			dgap_input(ch);
-
-			spin_lock_irqsave(&bd->bd_lock, lock_flags);
-			spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-			if (ch->ch_flags & CH_RACTIVE)
-				ch->ch_flags |= CH_RENABLE;
-			else
-				writeb(1, &bs->idata);
-
-			if (ch->ch_flags & CH_RWAIT) {
-				ch->ch_flags &= ~CH_RWAIT;
-
-				wake_up_interruptible
-					(&ch->ch_tun.un_flags_wait);
-			}
-		}
-
-		/*
-		 * Process Modem change signals.
-		 */
-		if (reason & IFMODEM) {
-			ch->ch_mistat = modem;
-			dgap_carrier(ch);
-		}
-
-		/*
-		 * Process break.
-		 */
-		if (reason & IFBREAK) {
-			if (ch->ch_tun.un_tty) {
-				/* A break has been indicated */
-				ch->ch_err_break++;
-				tty_buffer_request_room
-					(ch->ch_tun.un_tty->port, 1);
-				tty_insert_flip_char(ch->ch_tun.un_tty->port,
-						     0, TTY_BREAK);
-				tty_flip_buffer_push(ch->ch_tun.un_tty->port);
-			}
-		}
-
-		/*
-		 * Process Transmit low.
-		 */
-		if (reason & IFTLW) {
-			dgap_write_wakeup(bd, ch, &ch->ch_tun, UN_LOW,
-					  &lock_flags, &lock_flags2);
-			dgap_write_wakeup(bd, ch, &ch->ch_pun, UN_LOW,
-					  &lock_flags, &lock_flags2);
-			if (ch->ch_flags & CH_WLOW) {
-				ch->ch_flags &= ~CH_WLOW;
-				wake_up_interruptible(&ch->ch_flags_wait);
-			}
-		}
-
-		/*
-		 * Process Transmit empty.
-		 */
-		if (reason & IFTEM) {
-			dgap_write_wakeup(bd, ch, &ch->ch_tun, UN_EMPTY,
-					  &lock_flags, &lock_flags2);
-			dgap_write_wakeup(bd, ch, &ch->ch_pun, UN_EMPTY,
-					  &lock_flags, &lock_flags2);
-			if (ch->ch_flags & CH_WEMPTY) {
-				ch->ch_flags &= ~CH_WEMPTY;
-				wake_up_interruptible(&ch->ch_flags_wait);
-			}
-		}
-
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-
-next:
-		tail = (tail + 4) & (EVMAX - EVSTART - 4);
-	}
-
-	writew(tail, &eaddr->ev_tail);
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-	return 0;
-}
-
-/*
- * Our board poller function.
- */
-static void dgap_poll_tasklet(unsigned long data)
-{
-	struct board_t *bd = (struct board_t *)data;
-	ulong lock_flags;
-	char __iomem *vaddr;
-	u16 head, tail;
-
-	if (!bd || (bd->magic != DGAP_BOARD_MAGIC))
-		return;
-
-	if (bd->inhibit_poller)
-		return;
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-
-	vaddr = bd->re_map_membase;
-
-	/*
-	 * If board is ready, parse deeper to see if there is anything to do.
-	 */
-	if (bd->state == BOARD_READY) {
-		struct ev_t __iomem *eaddr;
-
-		if (!bd->re_map_membase) {
-			spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-			return;
-		}
-		if (!bd->re_map_port) {
-			spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-			return;
-		}
-
-		if (!bd->nasync)
-			goto out;
-
-		eaddr = (struct ev_t __iomem *)(vaddr + EVBUF);
-
-		/* Get our head and tail */
-		head = readw(&eaddr->ev_head);
-		tail = readw(&eaddr->ev_tail);
-
-		/*
-		 * If there is an event pending. Go service it.
-		 */
-		if (head != tail) {
-			spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-			dgap_event(bd);
-			spin_lock_irqsave(&bd->bd_lock, lock_flags);
-		}
-
-out:
-		/*
-		 * If board is doing interrupts, ACK the interrupt.
-		 */
-		if (bd->intr_running)
-			readb(bd->re_map_port + 2);
-
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return;
-	}
-
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-}
-
-/*
- * dgap_found_board()
- *
- * A board has been found, init it.
- */
-static struct board_t *dgap_found_board(struct pci_dev *pdev, int id,
-					int boardnum)
-{
-	struct board_t *brd;
-	unsigned int pci_irq;
-	int i;
-	int ret;
-
-	/* get the board structure and prep it */
-	brd = kzalloc(sizeof(struct board_t), GFP_KERNEL);
-	if (!brd)
-		return ERR_PTR(-ENOMEM);
-
-	/* store the info for the board we've found */
-	brd->magic = DGAP_BOARD_MAGIC;
-	brd->boardnum = boardnum;
-	brd->vendor = dgap_pci_tbl[id].vendor;
-	brd->device = dgap_pci_tbl[id].device;
-	brd->pdev = pdev;
-	brd->pci_bus = pdev->bus->number;
-	brd->pci_slot = PCI_SLOT(pdev->devfn);
-	brd->name = dgap_ids[id].name;
-	brd->maxports = dgap_ids[id].maxports;
-	brd->type = dgap_ids[id].config_type;
-	brd->dpatype = dgap_ids[id].dpatype;
-	brd->dpastatus = BD_NOFEP;
-	init_waitqueue_head(&brd->state_wait);
-
-	spin_lock_init(&brd->bd_lock);
-
-	brd->inhibit_poller	= FALSE;
-	brd->wait_for_bios	= 0;
-	brd->wait_for_fep	= 0;
-
-	for (i = 0; i < MAXPORTS; i++)
-		brd->channels[i] = NULL;
-
-	/* store which card & revision we have */
-	pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID, &brd->subvendor);
-	pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &brd->subdevice);
-	pci_read_config_byte(pdev, PCI_REVISION_ID, &brd->rev);
-
-	pci_irq = pdev->irq;
-	brd->irq = pci_irq;
-
-	/* get the PCI Base Address Registers */
-
-	/* Xr Jupiter and EPC use BAR 2 */
-	if (brd->device == PCI_DEV_XRJ_DID || brd->device == PCI_DEV_EPCJ_DID) {
-		brd->membase     = pci_resource_start(pdev, 2);
-		brd->membase_end = pci_resource_end(pdev, 2);
-	}
-	/* Everyone else uses BAR 0 */
-	else {
-		brd->membase     = pci_resource_start(pdev, 0);
-		brd->membase_end = pci_resource_end(pdev, 0);
-	}
-
-	if (!brd->membase) {
-		ret = -ENODEV;
-		goto free_brd;
-	}
-
-	if (brd->membase & 1)
-		brd->membase &= ~3;
-	else
-		brd->membase &= ~15;
-
-	/*
-	 * On the PCI boards, there is no IO space allocated
-	 * The I/O registers will be in the first 3 bytes of the
-	 * upper 2MB of the 4MB memory space.  The board memory
-	 * will be mapped into the low 2MB of the 4MB memory space
-	 */
-	brd->port = brd->membase + PCI_IO_OFFSET;
-	brd->port_end = brd->port + PCI_IO_SIZE_DGAP;
-
-	/*
-	 * Special initialization for non-PLX boards
-	 */
-	if (brd->device != PCI_DEV_XRJ_DID && brd->device != PCI_DEV_EPCJ_DID) {
-		unsigned short cmd;
-
-		pci_write_config_byte(pdev, 0x40, 0);
-		pci_write_config_byte(pdev, 0x46, 0);
-
-		/* Limit burst length to 2 doubleword transactions */
-		pci_write_config_byte(pdev, 0x42, 1);
-
-		/*
-		 * Enable IO and mem if not already done.
-		 * This was needed for support on Itanium.
-		 */
-		pci_read_config_word(pdev, PCI_COMMAND, &cmd);
-		cmd |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY);
-		pci_write_config_word(pdev, PCI_COMMAND, cmd);
-	}
-
-	/* init our poll helper tasklet */
-	tasklet_init(&brd->helper_tasklet, dgap_poll_tasklet,
-		     (unsigned long)brd);
-
-	ret = dgap_remap(brd);
-	if (ret)
-		goto free_brd;
-
-	pr_info("dgap: board %d: %s (rev %d), irq %ld\n",
-		boardnum, brd->name, brd->rev, brd->irq);
-
-	return brd;
-
-free_brd:
-	kfree(brd);
-
-	return ERR_PTR(ret);
-}
-
-/*
- * dgap_intr()
- *
- * Driver interrupt handler.
- */
-static irqreturn_t dgap_intr(int irq, void *voidbrd)
-{
-	struct board_t *brd = voidbrd;
-
-	if (!brd)
-		return IRQ_NONE;
-
-	/*
-	 * Check to make sure its for us.
-	 */
-	if (brd->magic != DGAP_BOARD_MAGIC)
-		return IRQ_NONE;
-
-	brd->intr_count++;
-
-	/*
-	 * Schedule tasklet to run at a better time.
-	 */
-	tasklet_schedule(&brd->helper_tasklet);
-	return IRQ_HANDLED;
-}
-
-/*****************************************************************************
-*
-* Function:
-*
-*    dgap_poll_handler
-*
-* Author:
-*
-*    Scott H Kilau
-*
-* Parameters:
-*
-*    dummy -- ignored
-*
-* Return Values:
-*
-*    none
-*
-* Description:
-*
-*    As each timer expires, it determines (a) whether the "transmit"
-*    waiter needs to be woken up, and (b) whether the poller needs to
-*    be rescheduled.
-*
-******************************************************************************/
-
-static void dgap_poll_handler(ulong dummy)
-{
-	unsigned int i;
-	struct board_t *brd;
-	unsigned long lock_flags;
-	ulong new_time;
-
-	dgap_poll_counter++;
-
-	/*
-	 * Do not start the board state machine until
-	 * driver tells us its up and running, and has
-	 * everything it needs.
-	 */
-	if (dgap_driver_state != DRIVER_READY)
-		goto schedule_poller;
-
-	/*
-	 * If we have just 1 board, or the system is not SMP,
-	 * then use the typical old style poller.
-	 * Otherwise, use our new tasklet based poller, which should
-	 * speed things up for multiple boards.
-	 */
-	if ((dgap_numboards == 1) || (num_online_cpus() <= 1)) {
-		for (i = 0; i < dgap_numboards; i++) {
-			brd = dgap_board[i];
-
-			if (brd->state == BOARD_FAILED)
-				continue;
-			if (!brd->intr_running)
-				/* Call the real board poller directly */
-				dgap_poll_tasklet((unsigned long)brd);
-		}
-	} else {
-		/*
-		 * Go thru each board, kicking off a
-		 * tasklet for each if needed
-		 */
-		for (i = 0; i < dgap_numboards; i++) {
-			brd = dgap_board[i];
-
-			/*
-			 * Attempt to grab the board lock.
-			 *
-			 * If we can't get it, no big deal, the next poll
-			 * will get it. Basically, I just really don't want
-			 * to spin in here, because I want to kick off my
-			 * tasklets as fast as I can, and then get out the
-			 * poller.
-			 */
-			if (!spin_trylock(&brd->bd_lock))
-				continue;
-
-			/*
-			 * If board is in a failed state, don't bother
-			 *  scheduling a tasklet
-			 */
-			if (brd->state == BOARD_FAILED) {
-				spin_unlock(&brd->bd_lock);
-				continue;
-			}
-
-			/* Schedule a poll helper task */
-			if (!brd->intr_running)
-				tasklet_schedule(&brd->helper_tasklet);
-
-			/*
-			 * Can't do DGAP_UNLOCK here, as we don't have
-			 * lock_flags because we did a trylock above.
-			 */
-			spin_unlock(&brd->bd_lock);
-		}
-	}
-
-schedule_poller:
-
-	/*
-	 * Schedule ourself back at the nominal wakeup interval.
-	 */
-	spin_lock_irqsave(&dgap_poll_lock, lock_flags);
-	dgap_poll_time +=  dgap_jiffies_from_ms(dgap_poll_tick);
-
-	new_time = dgap_poll_time - jiffies;
-
-	if ((ulong)new_time >= 2 * dgap_poll_tick) {
-		dgap_poll_time =
-			jiffies +  dgap_jiffies_from_ms(dgap_poll_tick);
-	}
-
-	dgap_poll_timer.function = dgap_poll_handler;
-	dgap_poll_timer.data = 0;
-	dgap_poll_timer.expires = dgap_poll_time;
-	spin_unlock_irqrestore(&dgap_poll_lock, lock_flags);
-
-	if (!dgap_poll_stop)
-		add_timer(&dgap_poll_timer);
-}
-
-/*=======================================================================
- *
- *      dgap_cmdb - Sends a 2 byte command to the FEP.
- *
- *              ch      - Pointer to channel structure.
- *              cmd     - Command to be sent.
- *              byte1   - Integer containing first byte to be sent.
- *              byte2   - Integer containing second byte to be sent.
- *              ncmds   - Wait until ncmds or fewer cmds are left
- *                        in the cmd buffer before returning.
- *
- *=======================================================================*/
-static void dgap_cmdb(struct channel_t *ch, u8 cmd, u8 byte1,
-		      u8 byte2, uint ncmds)
-{
-	char __iomem *vaddr;
-	struct __iomem cm_t *cm_addr;
-	uint count;
-	uint n;
-	u16 head;
-	u16 tail;
-
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	/*
-	 * Check if board is still alive.
-	 */
-	if (ch->ch_bd->state == BOARD_FAILED)
-		return;
-
-	/*
-	 * Make sure the pointers are in range before
-	 * writing to the FEP memory.
-	 */
-	vaddr = ch->ch_bd->re_map_membase;
-
-	if (!vaddr)
-		return;
-
-	cm_addr = (struct cm_t __iomem *)(vaddr + CMDBUF);
-	head = readw(&cm_addr->cm_head);
-
-	/*
-	 * Forget it if pointers out of range.
-	 */
-	if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
-		ch->ch_bd->state = BOARD_FAILED;
-		return;
-	}
-
-	/*
-	 * Put the data in the circular command buffer.
-	 */
-	writeb(cmd, (vaddr + head + CMDSTART + 0));
-	writeb((u8)ch->ch_portnum, (vaddr + head + CMDSTART + 1));
-	writeb(byte1, (vaddr + head + CMDSTART + 2));
-	writeb(byte2, (vaddr + head + CMDSTART + 3));
-
-	head = (head + 4) & (CMDMAX - CMDSTART - 4);
-
-	writew(head, &cm_addr->cm_head);
-
-	/*
-	 * Wait if necessary before updating the head
-	 * pointer to limit the number of outstanding
-	 * commands to the FEP.   If the time spent waiting
-	 * is outlandish, declare the FEP dead.
-	 */
-	for (count = dgap_count ;;) {
-		head = readw(&cm_addr->cm_head);
-		tail = readw(&cm_addr->cm_tail);
-
-		n = (head - tail) & (CMDMAX - CMDSTART - 4);
-
-		if (n <= ncmds * sizeof(struct cm_t))
-			break;
-
-		if (--count == 0) {
-			ch->ch_bd->state = BOARD_FAILED;
-			return;
-		}
-		udelay(10);
-	}
-}
-
-/*=======================================================================
- *
- *      dgap_cmdw - Sends a 1 word command to the FEP.
- *
- *              ch      - Pointer to channel structure.
- *              cmd     - Command to be sent.
- *              word    - Integer containing word to be sent.
- *              ncmds   - Wait until ncmds or fewer cmds are left
- *                        in the cmd buffer before returning.
- *
- *=======================================================================*/
-static void dgap_cmdw(struct channel_t *ch, u8 cmd, u16 word, uint ncmds)
-{
-	char __iomem *vaddr;
-	struct __iomem cm_t *cm_addr;
-	uint count;
-	uint n;
-	u16 head;
-	u16 tail;
-
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	/*
-	 * Check if board is still alive.
-	 */
-	if (ch->ch_bd->state == BOARD_FAILED)
-		return;
-
-	/*
-	 * Make sure the pointers are in range before
-	 * writing to the FEP memory.
-	 */
-	vaddr = ch->ch_bd->re_map_membase;
-	if (!vaddr)
-		return;
-
-	cm_addr = (struct cm_t __iomem *)(vaddr + CMDBUF);
-	head = readw(&cm_addr->cm_head);
-
-	/*
-	 * Forget it if pointers out of range.
-	 */
-	if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
-		ch->ch_bd->state = BOARD_FAILED;
-		return;
-	}
-
-	/*
-	 * Put the data in the circular command buffer.
-	 */
-	writeb(cmd, (vaddr + head + CMDSTART + 0));
-	writeb((u8)ch->ch_portnum, (vaddr + head + CMDSTART + 1));
-	writew((u16)word, (vaddr + head + CMDSTART + 2));
-
-	head = (head + 4) & (CMDMAX - CMDSTART - 4);
-
-	writew(head, &cm_addr->cm_head);
-
-	/*
-	 * Wait if necessary before updating the head
-	 * pointer to limit the number of outstanding
-	 * commands to the FEP.   If the time spent waiting
-	 * is outlandish, declare the FEP dead.
-	 */
-	for (count = dgap_count ;;) {
-		head = readw(&cm_addr->cm_head);
-		tail = readw(&cm_addr->cm_tail);
-
-		n = (head - tail) & (CMDMAX - CMDSTART - 4);
-
-		if (n <= ncmds * sizeof(struct cm_t))
-			break;
-
-		if (--count == 0) {
-			ch->ch_bd->state = BOARD_FAILED;
-			return;
-		}
-		udelay(10);
-	}
-}
-
-/*=======================================================================
- *
- *      dgap_cmdw_ext - Sends a extended word command to the FEP.
- *
- *              ch      - Pointer to channel structure.
- *              cmd     - Command to be sent.
- *              word    - Integer containing word to be sent.
- *              ncmds   - Wait until ncmds or fewer cmds are left
- *                        in the cmd buffer before returning.
- *
- *=======================================================================*/
-static void dgap_cmdw_ext(struct channel_t *ch, u16 cmd, u16 word, uint ncmds)
-{
-	char __iomem *vaddr;
-	struct __iomem cm_t *cm_addr;
-	uint count;
-	uint n;
-	u16 head;
-	u16 tail;
-
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	/*
-	 * Check if board is still alive.
-	 */
-	if (ch->ch_bd->state == BOARD_FAILED)
-		return;
-
-	/*
-	 * Make sure the pointers are in range before
-	 * writing to the FEP memory.
-	 */
-	vaddr = ch->ch_bd->re_map_membase;
-	if (!vaddr)
-		return;
-
-	cm_addr = (struct cm_t __iomem *)(vaddr + CMDBUF);
-	head = readw(&cm_addr->cm_head);
-
-	/*
-	 * Forget it if pointers out of range.
-	 */
-	if (head >= (CMDMAX - CMDSTART) || (head & 03)) {
-		ch->ch_bd->state = BOARD_FAILED;
-		return;
-	}
-
-	/*
-	 * Put the data in the circular command buffer.
-	 */
-
-	/* Write an FF to tell the FEP that we want an extended command */
-	writeb((u8)0xff, (vaddr + head + CMDSTART + 0));
-
-	writeb((u8)ch->ch_portnum, (vaddr + head + CMDSTART + 1));
-	writew((u16)cmd, (vaddr + head + CMDSTART + 2));
-
-	/*
-	 * If the second part of the command won't fit,
-	 * put it at the beginning of the circular buffer.
-	 */
-	if (((head + 4) >= ((CMDMAX - CMDSTART)) || (head & 03)))
-		writew((u16)word, (vaddr + CMDSTART));
-	else
-		writew((u16)word, (vaddr + head + CMDSTART + 4));
-
-	head = (head + 8) & (CMDMAX - CMDSTART - 4);
-
-	writew(head, &cm_addr->cm_head);
-
-	/*
-	 * Wait if necessary before updating the head
-	 * pointer to limit the number of outstanding
-	 * commands to the FEP.   If the time spent waiting
-	 * is outlandish, declare the FEP dead.
-	 */
-	for (count = dgap_count ;;) {
-		head = readw(&cm_addr->cm_head);
-		tail = readw(&cm_addr->cm_tail);
-
-		n = (head - tail) & (CMDMAX - CMDSTART - 4);
-
-		if (n <= ncmds * sizeof(struct cm_t))
-			break;
-
-		if (--count == 0) {
-			ch->ch_bd->state = BOARD_FAILED;
-			return;
-		}
-		udelay(10);
-	}
-}
-
-/*=======================================================================
- *
- *      dgap_wmove - Write data to FEP buffer.
- *
- *              ch      - Pointer to channel structure.
- *              buf     - Pointer to characters to be moved.
- *              cnt     - Number of characters to move.
- *
- *=======================================================================*/
-static void dgap_wmove(struct channel_t *ch, char *buf, uint cnt)
-{
-	int n;
-	char __iomem *taddr;
-	struct bs_t __iomem *bs;
-	u16 head;
-
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	/*
-	 * Check parameters.
-	 */
-	bs   = ch->ch_bs;
-	head = readw(&bs->tx_head);
-
-	/*
-	 * If pointers are out of range, just return.
-	 */
-	if ((cnt > ch->ch_tsize) ||
-	    (unsigned)(head - ch->ch_tstart) >= ch->ch_tsize)
-		return;
-
-	/*
-	 * If the write wraps over the top of the circular buffer,
-	 * move the portion up to the wrap point, and reset the
-	 * pointers to the bottom.
-	 */
-	n = ch->ch_tstart + ch->ch_tsize - head;
-
-	if (cnt >= n) {
-		cnt -= n;
-		taddr = ch->ch_taddr + head;
-		memcpy_toio(taddr, buf, n);
-		head = ch->ch_tstart;
-		buf += n;
-	}
-
-	/*
-	 * Move rest of data.
-	 */
-	taddr = ch->ch_taddr + head;
-	n = cnt;
-	memcpy_toio(taddr, buf, n);
-	head += cnt;
-
-	writew(head, &bs->tx_head);
-}
-
-/*
- * Calls the firmware to reset this channel.
- */
-static void dgap_firmware_reset_port(struct channel_t *ch)
-{
-	dgap_cmdb(ch, CHRESET, 0, 0, 0);
-
-	/*
-	 * Now that the channel is reset, we need to make sure
-	 * all the current settings get reapplied to the port
-	 * in the firmware.
-	 *
-	 * So we will set the driver's cache of firmware
-	 * settings all to 0, and then call param.
-	 */
-	ch->ch_fepiflag = 0;
-	ch->ch_fepcflag = 0;
-	ch->ch_fepoflag = 0;
-	ch->ch_fepstartc = 0;
-	ch->ch_fepstopc = 0;
-	ch->ch_fepastartc = 0;
-	ch->ch_fepastopc = 0;
-	ch->ch_mostat = 0;
-	ch->ch_hflow = 0;
-}
-
-/*=======================================================================
- *
- *      dgap_param - Set Digi parameters.
- *
- *              struct tty_struct *     - TTY for port.
- *
- *=======================================================================*/
-static int dgap_param(struct channel_t *ch, struct board_t *bd, u32 un_type)
-{
-	u16 head;
-	u16 cflag;
-	u16 iflag;
-	u8 mval;
-	u8 hflow;
-
-	/*
-	 * If baud rate is zero, flush queues, and set mval to drop DTR.
-	 */
-	if ((ch->ch_c_cflag & (CBAUD)) == 0) {
-		/* flush rx */
-		head = readw(&ch->ch_bs->rx_head);
-		writew(head, &ch->ch_bs->rx_tail);
-
-		/* flush tx */
-		head = readw(&ch->ch_bs->tx_head);
-		writew(head, &ch->ch_bs->tx_tail);
-
-		ch->ch_flags |= (CH_BAUD0);
-
-		/* Drop RTS and DTR */
-		ch->ch_mval &= ~(D_RTS(ch) | D_DTR(ch));
-		mval = D_DTR(ch) | D_RTS(ch);
-		ch->ch_baud_info = 0;
-
-	} else if (ch->ch_custom_speed && (bd->bd_flags & BD_FEP5PLUS)) {
-		/*
-		 * Tell the fep to do the command
-		 */
-
-		dgap_cmdw_ext(ch, 0xff01, ch->ch_custom_speed, 0);
-
-		/*
-		 * Now go get from fep mem, what the fep
-		 * believes the custom baud rate is.
-		 */
-		ch->ch_custom_speed = dgap_get_custom_baud(ch);
-		ch->ch_baud_info = ch->ch_custom_speed;
-
-		/* Handle transition from B0 */
-		if (ch->ch_flags & CH_BAUD0) {
-			ch->ch_flags &= ~(CH_BAUD0);
-			ch->ch_mval |= (D_RTS(ch) | D_DTR(ch));
-		}
-		mval = D_DTR(ch) | D_RTS(ch);
-
-	} else {
-		/*
-		 * Set baud rate, character size, and parity.
-		 */
-
-
-		int iindex = 0;
-		int jindex = 0;
-		int baud = 0;
-
-		ulong bauds[4][16] = {
-			{ /* slowbaud */
-				0,	50,	75,	110,
-				134,	150,	200,	300,
-				600,	1200,	1800,	2400,
-				4800,	9600,	19200,	38400 },
-			{ /* slowbaud & CBAUDEX */
-				0,	57600,	115200,	230400,
-				460800,	150,	200,	921600,
-				600,	1200,	1800,	2400,
-				4800,	9600,	19200,	38400 },
-			{ /* fastbaud */
-				0,	57600,	76800,	115200,
-				14400,	57600,	230400,	76800,
-				115200,	230400,	28800,	460800,
-				921600,	9600,	19200,	38400 },
-			{ /* fastbaud & CBAUDEX */
-				0,	57600,	115200,	230400,
-				460800,	150,	200,	921600,
-				600,	1200,	1800,	2400,
-				4800,	9600,	19200,	38400 }
-		};
-
-		/*
-		 * Only use the TXPrint baud rate if the
-		 * terminal unit is NOT open
-		 */
-		if (!(ch->ch_tun.un_flags & UN_ISOPEN) &&
-		    un_type == DGAP_PRINT)
-			baud = C_BAUD(ch->ch_pun.un_tty) & 0xff;
-		else
-			baud = C_BAUD(ch->ch_tun.un_tty) & 0xff;
-
-		if (ch->ch_c_cflag & CBAUDEX)
-			iindex = 1;
-
-		if (ch->ch_digi.digi_flags & DIGI_FAST)
-			iindex += 2;
-
-		jindex = baud;
-
-		if ((iindex >= 0) && (iindex < 4) &&
-		    (jindex >= 0) && (jindex < 16))
-			baud = bauds[iindex][jindex];
-		else
-			baud = 0;
-
-		if (baud == 0)
-			baud = 9600;
-
-		ch->ch_baud_info = baud;
-
-		/*
-		 * CBAUD has bit position 0x1000 set these days to
-		 * indicate Linux baud rate remap.
-		 * We use a different bit assignment for high speed.
-		 * Clear this bit out while grabbing the parts of
-		 * "cflag" we want.
-		 */
-		cflag = ch->ch_c_cflag & ((CBAUD ^ CBAUDEX) | PARODD | PARENB |
-						   CSTOPB | CSIZE);
-
-		/*
-		 * HUPCL bit is used by FEP to indicate fast baud
-		 * table is to be used.
-		 */
-		if ((ch->ch_digi.digi_flags & DIGI_FAST) ||
-		    (ch->ch_c_cflag & CBAUDEX))
-			cflag |= HUPCL;
-
-		if ((ch->ch_c_cflag & CBAUDEX) &&
-		    !(ch->ch_digi.digi_flags & DIGI_FAST)) {
-			/*
-			 * The below code is trying to guarantee that only
-			 * baud rates 115200, 230400, 460800, 921600 are
-			 * remapped. We use exclusive or  because the various
-			 * baud rates share common bit positions and therefore
-			 * can't be tested for easily.
-			 */
-			tcflag_t tcflag = (ch->ch_c_cflag & CBAUD) | CBAUDEX;
-			int baudpart = 0;
-
-			/*
-			 * Map high speed requests to index
-			 * into FEP's baud table
-			 */
-			switch (tcflag) {
-			case B57600:
-				baudpart = 1;
-				break;
-#ifdef B76800
-			case B76800:
-				baudpart = 2;
-				break;
-#endif
-			case B115200:
-				baudpart = 3;
-				break;
-			case B230400:
-				baudpart = 9;
-				break;
-			case B460800:
-				baudpart = 11;
-				break;
-#ifdef B921600
-			case B921600:
-				baudpart = 12;
-				break;
-#endif
-			default:
-				baudpart = 0;
-			}
-
-			if (baudpart)
-				cflag = (cflag & ~(CBAUD | CBAUDEX)) | baudpart;
-		}
-
-		cflag &= 0xffff;
-
-		if (cflag != ch->ch_fepcflag) {
-			ch->ch_fepcflag = (u16)(cflag & 0xffff);
-
-			/*
-			 * Okay to have channel and board
-			 * locks held calling this
-			 */
-			dgap_cmdw(ch, SCFLAG, (u16)cflag, 0);
-		}
-
-		/* Handle transition from B0 */
-		if (ch->ch_flags & CH_BAUD0) {
-			ch->ch_flags &= ~(CH_BAUD0);
-			ch->ch_mval |= (D_RTS(ch) | D_DTR(ch));
-		}
-		mval = D_DTR(ch) | D_RTS(ch);
-	}
-
-	/*
-	 * Get input flags.
-	 */
-	iflag = ch->ch_c_iflag & (IGNBRK | BRKINT | IGNPAR | PARMRK |
-				  INPCK | ISTRIP | IXON | IXANY | IXOFF);
-
-	if ((ch->ch_startc == _POSIX_VDISABLE) ||
-	    (ch->ch_stopc == _POSIX_VDISABLE)) {
-		iflag &= ~(IXON | IXOFF);
-		ch->ch_c_iflag &= ~(IXON | IXOFF);
-	}
-
-	/*
-	 * Only the IBM Xr card can switch between
-	 * 232 and 422 modes on the fly
-	 */
-	if (bd->device == PCI_DEV_XR_IBM_DID) {
-		if (ch->ch_digi.digi_flags & DIGI_422)
-			dgap_cmdb(ch, SCOMMODE, MODE_422, 0, 0);
-		else
-			dgap_cmdb(ch, SCOMMODE, MODE_232, 0, 0);
-	}
-
-	if (ch->ch_digi.digi_flags & DIGI_ALTPIN)
-		iflag |= IALTPIN;
-
-	if (iflag != ch->ch_fepiflag) {
-		ch->ch_fepiflag = iflag;
-
-		/* Okay to have channel and board locks held calling this */
-		dgap_cmdw(ch, SIFLAG, (u16)ch->ch_fepiflag, 0);
-	}
-
-	/*
-	 * Select hardware handshaking.
-	 */
-	hflow = 0;
-
-	if (ch->ch_c_cflag & CRTSCTS)
-		hflow |= (D_RTS(ch) | D_CTS(ch));
-	if (ch->ch_digi.digi_flags & RTSPACE)
-		hflow |= D_RTS(ch);
-	if (ch->ch_digi.digi_flags & DTRPACE)
-		hflow |= D_DTR(ch);
-	if (ch->ch_digi.digi_flags & CTSPACE)
-		hflow |= D_CTS(ch);
-	if (ch->ch_digi.digi_flags & DSRPACE)
-		hflow |= D_DSR(ch);
-	if (ch->ch_digi.digi_flags & DCDPACE)
-		hflow |= D_CD(ch);
-
-	if (hflow != ch->ch_hflow) {
-		ch->ch_hflow = hflow;
-
-		/* Okay to have channel and board locks held calling this */
-		dgap_cmdb(ch, SHFLOW, (u8)hflow, 0xff, 0);
-	}
-
-	/*
-	 * Set RTS and/or DTR Toggle if needed,
-	 * but only if product is FEP5+ based.
-	 */
-	if (bd->bd_flags & BD_FEP5PLUS) {
-		u16 hflow2 = 0;
-
-		if (ch->ch_digi.digi_flags & DIGI_RTS_TOGGLE)
-			hflow2 |= (D_RTS(ch));
-		if (ch->ch_digi.digi_flags & DIGI_DTR_TOGGLE)
-			hflow2 |= (D_DTR(ch));
-
-		dgap_cmdw_ext(ch, 0xff03, hflow2, 0);
-	}
-
-	/*
-	 * Set modem control lines.
-	 */
-
-	mval ^= ch->ch_mforce & (mval ^ ch->ch_mval);
-
-	if (ch->ch_mostat ^ mval) {
-		ch->ch_mostat = mval;
-
-		/* Okay to have channel and board locks held calling this */
-		dgap_cmdb(ch, SMODEM, (u8)mval, D_RTS(ch) | D_DTR(ch), 0);
-	}
-
-	/*
-	 * Read modem signals, and then call carrier function.
-	 */
-	ch->ch_mistat = readb(&ch->ch_bs->m_stat);
-	dgap_carrier(ch);
-
-	/*
-	 * Set the start and stop characters.
-	 */
-	if (ch->ch_startc != ch->ch_fepstartc ||
-	    ch->ch_stopc != ch->ch_fepstopc) {
-		ch->ch_fepstartc = ch->ch_startc;
-		ch->ch_fepstopc =  ch->ch_stopc;
-
-		/* Okay to have channel and board locks held calling this */
-		dgap_cmdb(ch, SFLOWC, ch->ch_fepstartc, ch->ch_fepstopc, 0);
-	}
-
-	/*
-	 * Set the Auxiliary start and stop characters.
-	 */
-	if (ch->ch_astartc != ch->ch_fepastartc ||
-	    ch->ch_astopc != ch->ch_fepastopc) {
-		ch->ch_fepastartc = ch->ch_astartc;
-		ch->ch_fepastopc = ch->ch_astopc;
-
-		/* Okay to have channel and board locks held calling this */
-		dgap_cmdb(ch, SAFLOWC, ch->ch_fepastartc, ch->ch_fepastopc, 0);
-	}
-
-	return 0;
-}
-
-/*
- * dgap_block_til_ready()
- *
- * Wait for DCD, if needed.
- */
-static int dgap_block_til_ready(struct tty_struct *tty, struct file *file,
-				struct channel_t *ch)
-{
-	int retval = 0;
-	struct un_t *un;
-	ulong lock_flags;
-	uint old_flags;
-	int sleep_on_un_flags;
-
-	if (!tty || tty->magic != TTY_MAGIC || !file || !ch ||
-	    ch->magic != DGAP_CHANNEL_MAGIC)
-		return -EIO;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return -EIO;
-
-	spin_lock_irqsave(&ch->ch_lock, lock_flags);
-
-	ch->ch_wopen++;
-
-	/* Loop forever */
-	while (1) {
-		sleep_on_un_flags = 0;
-
-		/*
-		 * If board has failed somehow during our sleep,
-		 * bail with error.
-		 */
-		if (ch->ch_bd->state == BOARD_FAILED) {
-			retval = -EIO;
-			break;
-		}
-
-		/* If tty was hung up, break out of loop and set error. */
-		if (tty_hung_up_p(file)) {
-			retval = -EAGAIN;
-			break;
-		}
-
-		/*
-		 * If either unit is in the middle of the fragile part of close,
-		 * we just cannot touch the channel safely.
-		 * Go back to sleep, knowing that when the channel can be
-		 * touched safely, the close routine will signal the
-		 * ch_wait_flags to wake us back up.
-		 */
-		if (!((ch->ch_tun.un_flags | ch->ch_pun.un_flags) &
-		      UN_CLOSING)) {
-			/*
-			 * Our conditions to leave cleanly and happily:
-			 * 1) NONBLOCKING on the tty is set.
-			 * 2) CLOCAL is set.
-			 * 3) DCD (fake or real) is active.
-			 */
-
-			if (file->f_flags & O_NONBLOCK)
-				break;
-
-			if (tty->flags & (1 << TTY_IO_ERROR))
-				break;
-
-			if (ch->ch_flags & CH_CD)
-				break;
-
-			if (ch->ch_flags & CH_FCAR)
-				break;
-		} else {
-			sleep_on_un_flags = 1;
-		}
-
-		/*
-		 * If there is a signal pending, the user probably
-		 * interrupted (ctrl-c) us.
-		 * Leave loop with error set.
-		 */
-		if (signal_pending(current)) {
-			retval = -ERESTARTSYS;
-			break;
-		}
-
-		/*
-		 * Store the flags before we let go of channel lock
-		 */
-		if (sleep_on_un_flags)
-			old_flags = ch->ch_tun.un_flags | ch->ch_pun.un_flags;
-		else
-			old_flags = ch->ch_flags;
-
-		/*
-		 * Let go of channel lock before calling schedule.
-		 * Our poller will get any FEP events and wake us up when DCD
-		 * eventually goes active.
-		 */
-
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
-		/*
-		 * Wait for something in the flags to change
-		 * from the current value.
-		 */
-		if (sleep_on_un_flags) {
-			retval = wait_event_interruptible(un->un_flags_wait,
-				(old_flags != (ch->ch_tun.un_flags |
-					       ch->ch_pun.un_flags)));
-		} else {
-			retval = wait_event_interruptible(ch->ch_flags_wait,
-				(old_flags != ch->ch_flags));
-		}
-
-		/*
-		 * We got woken up for some reason.
-		 * Before looping around, grab our channel lock.
-		 */
-		spin_lock_irqsave(&ch->ch_lock, lock_flags);
-	}
-
-	ch->ch_wopen--;
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
-	return retval;
-}
-
-/*
- * dgap_tty_flush_buffer()
- *
- * Flush Tx buffer (make in == out)
- */
-static void dgap_tty_flush_buffer(struct tty_struct *tty)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-	ulong lock_flags;
-	ulong lock_flags2;
-	u16 head;
-
-	if (!tty || tty->magic != TTY_MAGIC)
-		return;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return;
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-	ch->ch_flags &= ~CH_STOP;
-	head = readw(&ch->ch_bs->tx_head);
-	dgap_cmdw(ch, FLUSHTX, (u16)head, 0);
-	dgap_cmdw(ch, RESUMETX, 0, 0);
-	if (ch->ch_tun.un_flags & (UN_LOW | UN_EMPTY)) {
-		ch->ch_tun.un_flags &= ~(UN_LOW | UN_EMPTY);
-		wake_up_interruptible(&ch->ch_tun.un_flags_wait);
-	}
-	if (ch->ch_pun.un_flags & (UN_LOW | UN_EMPTY)) {
-		ch->ch_pun.un_flags &= ~(UN_LOW | UN_EMPTY);
-		wake_up_interruptible(&ch->ch_pun.un_flags_wait);
-	}
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-	if (waitqueue_active(&tty->write_wait))
-		wake_up_interruptible(&tty->write_wait);
-	tty_wakeup(tty);
-}
-
-/*
- * dgap_tty_hangup()
- *
- * Hangup the port.  Like a close, but don't wait for output to drain.
- */
-static void dgap_tty_hangup(struct tty_struct *tty)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!tty || tty->magic != TTY_MAGIC)
-		return;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return;
-
-	/* flush the transmit queues */
-	dgap_tty_flush_buffer(tty);
-}
-
-/*
- * dgap_tty_chars_in_buffer()
- *
- * Return number of characters that have not been transmitted yet.
- *
- * This routine is used by the line discipline to determine if there
- * is data waiting to be transmitted/drained/flushed or not.
- */
-static int dgap_tty_chars_in_buffer(struct tty_struct *tty)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-	struct bs_t __iomem *bs;
-	u8 tbusy;
-	uint chars;
-	u16 thead, ttail, tmask, chead, ctail;
-	ulong lock_flags = 0;
-	ulong lock_flags2 = 0;
-
-	if (!tty)
-		return 0;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return 0;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return 0;
-
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return 0;
-
-	bs = ch->ch_bs;
-	if (!bs)
-		return 0;
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-	tmask = (ch->ch_tsize - 1);
-
-	/* Get Transmit queue pointers */
-	thead = readw(&bs->tx_head) & tmask;
-	ttail = readw(&bs->tx_tail) & tmask;
-
-	/* Get tbusy flag */
-	tbusy = readb(&bs->tbusy);
-
-	/* Get Command queue pointers */
-	chead = readw(&ch->ch_cm->cm_head);
-	ctail = readw(&ch->ch_cm->cm_tail);
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-	/*
-	 * The only way we know for sure if there is no pending
-	 * data left to be transferred, is if:
-	 * 1) Transmit head and tail are equal (empty).
-	 * 2) Command queue head and tail are equal (empty).
-	 * 3) The "TBUSY" flag is 0. (Transmitter not busy).
-	 */
-
-	if ((ttail == thead) && (tbusy == 0) && (chead == ctail)) {
-		chars = 0;
-	} else {
-		if (thead >= ttail)
-			chars = thead - ttail;
-		else
-			chars = thead - ttail + ch->ch_tsize;
-		/*
-		 * Fudge factor here.
-		 * If chars is zero, we know that the command queue had
-		 * something in it or tbusy was set.  Because we cannot
-		 * be sure if there is still some data to be transmitted,
-		 * lets lie, and tell ld we have 1 byte left.
-		 */
-		if (chars == 0) {
-			/*
-			 * If TBUSY is still set, and our tx buffers are empty,
-			 * force the firmware to send me another wakeup after
-			 * TBUSY has been cleared.
-			 */
-			if (tbusy != 0) {
-				spin_lock_irqsave(&ch->ch_lock, lock_flags);
-				un->un_flags |= UN_EMPTY;
-				writeb(1, &bs->iempty);
-				spin_unlock_irqrestore(&ch->ch_lock,
-						       lock_flags);
-			}
-			chars = 1;
-		}
-	}
-
-	return chars;
-}
-
-static int dgap_wait_for_drain(struct tty_struct *tty)
-{
-	struct channel_t *ch;
-	struct un_t *un;
-	struct bs_t __iomem *bs;
-	int ret = 0;
-	uint count = 1;
-	ulong lock_flags = 0;
-
-	if (!tty || tty->magic != TTY_MAGIC)
-		return -EIO;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return -EIO;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return -EIO;
-
-	bs = ch->ch_bs;
-	if (!bs)
-		return -EIO;
-
-	/* Loop until data is drained */
-	while (count != 0) {
-		count = dgap_tty_chars_in_buffer(tty);
-
-		if (count == 0)
-			break;
-
-		/* Set flag waiting for drain */
-		spin_lock_irqsave(&ch->ch_lock, lock_flags);
-		un->un_flags |= UN_EMPTY;
-		writeb(1, &bs->iempty);
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
-		/* Go to sleep till we get woken up */
-		ret = wait_event_interruptible(un->un_flags_wait,
-					((un->un_flags & UN_EMPTY) == 0));
-		/* If ret is non-zero, user ctrl-c'ed us */
-		if (ret)
-			break;
-	}
-
-	spin_lock_irqsave(&ch->ch_lock, lock_flags);
-	un->un_flags &= ~(UN_EMPTY);
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
-	return ret;
-}
-
-/*
- * dgap_maxcps_room
- *
- * Reduces bytes_available to the max number of characters
- * that can be sent currently given the maxcps value, and
- * returns the new bytes_available.  This only affects printer
- * output.
- */
-static int dgap_maxcps_room(struct channel_t *ch, struct un_t *un,
-			    int bytes_available)
-{
-	/*
-	 * If its not the Transparent print device, return
-	 * the full data amount.
-	 */
-	if (un->un_type != DGAP_PRINT)
-		return bytes_available;
-
-	if (ch->ch_digi.digi_maxcps > 0 && ch->ch_digi.digi_bufsize > 0) {
-		int cps_limit = 0;
-		unsigned long current_time = jiffies;
-		unsigned long buffer_time = current_time +
-			(HZ * ch->ch_digi.digi_bufsize) /
-			ch->ch_digi.digi_maxcps;
-
-		if (ch->ch_cpstime < current_time) {
-			/* buffer is empty */
-			ch->ch_cpstime = current_time;   /* reset ch_cpstime */
-			cps_limit = ch->ch_digi.digi_bufsize;
-		} else if (ch->ch_cpstime < buffer_time) {
-			/* still room in the buffer */
-			cps_limit = ((buffer_time - ch->ch_cpstime) *
-				     ch->ch_digi.digi_maxcps) / HZ;
-		} else {
-			/* no room in the buffer */
-			cps_limit = 0;
-		}
-
-		bytes_available = min(cps_limit, bytes_available);
-	}
-
-	return bytes_available;
-}
-
-static inline void dgap_set_firmware_event(struct un_t *un, unsigned int event)
-{
-	struct channel_t *ch;
-	struct bs_t __iomem *bs;
-
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-	bs = ch->ch_bs;
-	if (!bs)
-		return;
-
-	if ((event & UN_LOW) != 0) {
-		if ((un->un_flags & UN_LOW) == 0) {
-			un->un_flags |= UN_LOW;
-			writeb(1, &bs->ilow);
-		}
-	}
-	if ((event & UN_LOW) != 0) {
-		if ((un->un_flags & UN_EMPTY) == 0) {
-			un->un_flags |= UN_EMPTY;
-			writeb(1, &bs->iempty);
-		}
-	}
-}
-
-/*
- * dgap_tty_write_room()
- *
- * Return space available in Tx buffer
- */
-static int dgap_tty_write_room(struct tty_struct *tty)
-{
-	struct channel_t *ch;
-	struct un_t *un;
-	struct bs_t __iomem *bs;
-	u16 head, tail, tmask;
-	int ret;
-	ulong lock_flags = 0;
-
-	if (!tty)
-		return 0;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return 0;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return 0;
-
-	bs = ch->ch_bs;
-	if (!bs)
-		return 0;
-
-	spin_lock_irqsave(&ch->ch_lock, lock_flags);
-
-	tmask = ch->ch_tsize - 1;
-	head = readw(&bs->tx_head) & tmask;
-	tail = readw(&bs->tx_tail) & tmask;
-
-	ret = tail - head - 1;
-	if (ret < 0)
-		ret += ch->ch_tsize;
-
-	/* Limit printer to maxcps */
-	ret = dgap_maxcps_room(ch, un, ret);
-
-	/*
-	 * If we are printer device, leave space for
-	 * possibly both the on and off strings.
-	 */
-	if (un->un_type == DGAP_PRINT) {
-		if (!(ch->ch_flags & CH_PRON))
-			ret -= ch->ch_digi.digi_onlen;
-		ret -= ch->ch_digi.digi_offlen;
-	} else {
-		if (ch->ch_flags & CH_PRON)
-			ret -= ch->ch_digi.digi_offlen;
-	}
-
-	if (ret < 0)
-		ret = 0;
-
-	/*
-	 * Schedule FEP to wake us up if needed.
-	 *
-	 * TODO:  This might be overkill...
-	 * Do we really need to schedule callbacks from the FEP
-	 * in every case?  Can we get smarter based on ret?
-	 */
-	dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
-	return ret;
-}
-
-/*
- * dgap_tty_write()
- *
- * Take data from the user or kernel and send it out to the FEP.
- * In here exists all the Transparent Print magic as well.
- */
-static int dgap_tty_write(struct tty_struct *tty, const unsigned char *buf,
-			  int count)
-{
-	struct channel_t *ch;
-	struct un_t *un;
-	struct bs_t __iomem *bs;
-	char __iomem *vaddr;
-	u16 head, tail, tmask, remain;
-	int bufcount, n;
-	ulong lock_flags;
-
-	if (!tty)
-		return 0;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return 0;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return 0;
-
-	bs = ch->ch_bs;
-	if (!bs)
-		return 0;
-
-	if (!count)
-		return 0;
-
-	spin_lock_irqsave(&ch->ch_lock, lock_flags);
-
-	/* Get our space available for the channel from the board */
-	tmask = ch->ch_tsize - 1;
-	head = readw(&(bs->tx_head)) & tmask;
-	tail = readw(&(bs->tx_tail)) & tmask;
-
-	bufcount = tail - head - 1;
-	if (bufcount < 0)
-		bufcount += ch->ch_tsize;
-
-	/*
-	 * Limit printer output to maxcps overall, with bursts allowed
-	 * up to bufsize characters.
-	 */
-	bufcount = dgap_maxcps_room(ch, un, bufcount);
-
-	/*
-	 * Take minimum of what the user wants to send, and the
-	 * space available in the FEP buffer.
-	 */
-	count = min(count, bufcount);
-
-	/*
-	 * Bail if no space left.
-	 */
-	if (count <= 0) {
-		dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-		return 0;
-	}
-
-	/*
-	 * Output the printer ON string, if we are in terminal mode, but
-	 * need to be in printer mode.
-	 */
-	if ((un->un_type == DGAP_PRINT) && !(ch->ch_flags & CH_PRON)) {
-		dgap_wmove(ch, ch->ch_digi.digi_onstr,
-			   (int)ch->ch_digi.digi_onlen);
-		head = readw(&bs->tx_head) & tmask;
-		ch->ch_flags |= CH_PRON;
-	}
-
-	/*
-	 * On the other hand, output the printer OFF string, if we are
-	 * currently in printer mode, but need to output to the terminal.
-	 */
-	if ((un->un_type != DGAP_PRINT) && (ch->ch_flags & CH_PRON)) {
-		dgap_wmove(ch, ch->ch_digi.digi_offstr,
-			   (int)ch->ch_digi.digi_offlen);
-		head = readw(&bs->tx_head) & tmask;
-		ch->ch_flags &= ~CH_PRON;
-	}
-
-	n = count;
-
-	/*
-	 * If the write wraps over the top of the circular buffer,
-	 * move the portion up to the wrap point, and reset the
-	 * pointers to the bottom.
-	 */
-	remain = ch->ch_tstart + ch->ch_tsize - head;
-
-	if (n >= remain) {
-		n -= remain;
-		vaddr = ch->ch_taddr + head;
-
-		memcpy_toio(vaddr, (u8 *)buf, remain);
-
-		head = ch->ch_tstart;
-		buf += remain;
-	}
-
-	if (n > 0) {
-		/*
-		 * Move rest of data.
-		 */
-		vaddr = ch->ch_taddr + head;
-		remain = n;
-
-		memcpy_toio(vaddr, (u8 *)buf, remain);
-		head += remain;
-	}
-
-	if (count) {
-		ch->ch_txcount += count;
-		head &= tmask;
-		writew(head, &bs->tx_head);
-	}
-
-	dgap_set_firmware_event(un, UN_LOW | UN_EMPTY);
-
-	/*
-	 * If this is the print device, and the
-	 * printer is still on, we need to turn it
-	 * off before going idle.  If the buffer is
-	 * non-empty, wait until it goes empty.
-	 * Otherwise turn it off right now.
-	 */
-	if ((un->un_type == DGAP_PRINT) && (ch->ch_flags & CH_PRON)) {
-		tail = readw(&bs->tx_tail) & tmask;
-
-		if (tail != head) {
-			un->un_flags |= UN_EMPTY;
-			writeb(1, &bs->iempty);
-		} else {
-			dgap_wmove(ch, ch->ch_digi.digi_offstr,
-				   (int)ch->ch_digi.digi_offlen);
-			head = readw(&bs->tx_head) & tmask;
-			ch->ch_flags &= ~CH_PRON;
-		}
-	}
-
-	/* Update printer buffer empty time. */
-	if ((un->un_type == DGAP_PRINT) && (ch->ch_digi.digi_maxcps > 0)
-	    && (ch->ch_digi.digi_bufsize > 0)) {
-		ch->ch_cpstime += (HZ * count) / ch->ch_digi.digi_maxcps;
-	}
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
-	return count;
-}
-
-/*
- * dgap_tty_put_char()
- *
- * Put a character into ch->ch_buf
- *
- *      - used by the line discipline for OPOST processing
- */
-static int dgap_tty_put_char(struct tty_struct *tty, unsigned char c)
-{
-	/*
-	 * Simply call tty_write.
-	 */
-	dgap_tty_write(tty, &c, 1);
-	return 1;
-}
-
-/*
- * Return modem signals to ld.
- */
-static int dgap_tty_tiocmget(struct tty_struct *tty)
-{
-	struct channel_t *ch;
-	struct un_t *un;
-	int result;
-	u8 mstat;
-	ulong lock_flags;
-
-	if (!tty || tty->magic != TTY_MAGIC)
-		return -EIO;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return -EIO;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return -EIO;
-
-	spin_lock_irqsave(&ch->ch_lock, lock_flags);
-
-	mstat = readb(&ch->ch_bs->m_stat);
-	/* Append any outbound signals that might be pending... */
-	mstat |= ch->ch_mostat;
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
-	result = 0;
-
-	if (mstat & D_DTR(ch))
-		result |= TIOCM_DTR;
-	if (mstat & D_RTS(ch))
-		result |= TIOCM_RTS;
-	if (mstat & D_CTS(ch))
-		result |= TIOCM_CTS;
-	if (mstat & D_DSR(ch))
-		result |= TIOCM_DSR;
-	if (mstat & D_RI(ch))
-		result |= TIOCM_RI;
-	if (mstat & D_CD(ch))
-		result |= TIOCM_CD;
-
-	return result;
-}
-
-/*
- * dgap_tty_tiocmset()
- *
- * Set modem signals, called by ld.
- */
-static int dgap_tty_tiocmset(struct tty_struct *tty,
-			     unsigned int set, unsigned int clear)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-	ulong lock_flags;
-	ulong lock_flags2;
-
-	if (!tty || tty->magic != TTY_MAGIC)
-		return -EIO;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return -EIO;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return -EIO;
-
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return -EIO;
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-	if (set & TIOCM_RTS) {
-		ch->ch_mforce |= D_RTS(ch);
-		ch->ch_mval   |= D_RTS(ch);
-	}
-
-	if (set & TIOCM_DTR) {
-		ch->ch_mforce |= D_DTR(ch);
-		ch->ch_mval   |= D_DTR(ch);
-	}
-
-	if (clear & TIOCM_RTS) {
-		ch->ch_mforce |= D_RTS(ch);
-		ch->ch_mval   &= ~(D_RTS(ch));
-	}
-
-	if (clear & TIOCM_DTR) {
-		ch->ch_mforce |= D_DTR(ch);
-		ch->ch_mval   &= ~(D_DTR(ch));
-	}
-
-	dgap_param(ch, bd, un->un_type);
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-	return 0;
-}
-
-/*
- * dgap_tty_send_break()
- *
- * Send a Break, called by ld.
- */
-static int dgap_tty_send_break(struct tty_struct *tty, int msec)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-	ulong lock_flags;
-	ulong lock_flags2;
-
-	if (!tty || tty->magic != TTY_MAGIC)
-		return -EIO;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return -EIO;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return -EIO;
-
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return -EIO;
-
-	switch (msec) {
-	case -1:
-		msec = 0xFFFF;
-		break;
-	case 0:
-		msec = 1;
-		break;
-	default:
-		msec /= 10;
-		break;
-	}
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-#if 0
-	dgap_cmdw(ch, SBREAK, (u16) SBREAK_TIME, 0);
-#endif
-	dgap_cmdw(ch, SBREAK, (u16)msec, 0);
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-	return 0;
-}
-
-/*
- * dgap_tty_wait_until_sent()
- *
- * wait until data has been transmitted, called by ld.
- */
-static void dgap_tty_wait_until_sent(struct tty_struct *tty, int timeout)
-{
-	dgap_wait_for_drain(tty);
-}
-
-/*
- * dgap_send_xchar()
- *
- * send a high priority character, called by ld.
- */
-static void dgap_tty_send_xchar(struct tty_struct *tty, char c)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-	ulong lock_flags;
-	ulong lock_flags2;
-
-	if (!tty || tty->magic != TTY_MAGIC)
-		return;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return;
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-	/*
-	 * This is technically what we should do.
-	 * However, the NIST tests specifically want
-	 * to see each XON or XOFF character that it
-	 * sends, so lets just send each character
-	 * by hand...
-	 */
-#if 0
-	if (c == STOP_CHAR(tty))
-		dgap_cmdw(ch, RPAUSE, 0, 0);
-	else if (c == START_CHAR(tty))
-		dgap_cmdw(ch, RRESUME, 0, 0);
-	else
-		dgap_wmove(ch, &c, 1);
-#else
-	dgap_wmove(ch, &c, 1);
-#endif
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-}
-
-/*
- * Return modem signals to ld.
- */
-static int dgap_get_modem_info(struct channel_t *ch, unsigned int __user *value)
-{
-	int result;
-	u8 mstat;
-	ulong lock_flags;
-
-	spin_lock_irqsave(&ch->ch_lock, lock_flags);
-
-	mstat = readb(&ch->ch_bs->m_stat);
-	/* Append any outbound signals that might be pending... */
-	mstat |= ch->ch_mostat;
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
-	result = 0;
-
-	if (mstat & D_DTR(ch))
-		result |= TIOCM_DTR;
-	if (mstat & D_RTS(ch))
-		result |= TIOCM_RTS;
-	if (mstat & D_CTS(ch))
-		result |= TIOCM_CTS;
-	if (mstat & D_DSR(ch))
-		result |= TIOCM_DSR;
-	if (mstat & D_RI(ch))
-		result |= TIOCM_RI;
-	if (mstat & D_CD(ch))
-		result |= TIOCM_CD;
-
-	return put_user(result, value);
-}
-
-/*
- * dgap_set_modem_info()
- *
- * Set modem signals, called by ld.
- */
-static int dgap_set_modem_info(struct channel_t *ch, struct board_t *bd,
-			       struct un_t *un, unsigned int command,
-			       unsigned int __user *value)
-{
-	int ret;
-	unsigned int arg;
-	ulong lock_flags;
-	ulong lock_flags2;
-
-	ret = get_user(arg, value);
-	if (ret)
-		return ret;
-
-	switch (command) {
-	case TIOCMBIS:
-		if (arg & TIOCM_RTS) {
-			ch->ch_mforce |= D_RTS(ch);
-			ch->ch_mval   |= D_RTS(ch);
-		}
-
-		if (arg & TIOCM_DTR) {
-			ch->ch_mforce |= D_DTR(ch);
-			ch->ch_mval   |= D_DTR(ch);
-		}
-
-		break;
-
-	case TIOCMBIC:
-		if (arg & TIOCM_RTS) {
-			ch->ch_mforce |= D_RTS(ch);
-			ch->ch_mval   &= ~(D_RTS(ch));
-		}
-
-		if (arg & TIOCM_DTR) {
-			ch->ch_mforce |= D_DTR(ch);
-			ch->ch_mval   &= ~(D_DTR(ch));
-		}
-
-		break;
-
-	case TIOCMSET:
-		ch->ch_mforce = D_DTR(ch) | D_RTS(ch);
-
-		if (arg & TIOCM_RTS)
-			ch->ch_mval |= D_RTS(ch);
-		else
-			ch->ch_mval &= ~(D_RTS(ch));
-
-		if (arg & TIOCM_DTR)
-			ch->ch_mval |= (D_DTR(ch));
-		else
-			ch->ch_mval &= ~(D_DTR(ch));
-
-		break;
-
-	default:
-		return -EINVAL;
-	}
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-	dgap_param(ch, bd, un->un_type);
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-	return 0;
-}
-
-/*
- * dgap_tty_digigeta()
- *
- * Ioctl to get the information for ditty.
- *
- *
- *
- */
-static int dgap_tty_digigeta(struct channel_t *ch,
-			     struct digi_t __user *retinfo)
-{
-	struct digi_t tmp;
-	ulong lock_flags;
-
-	if (!retinfo)
-		return -EFAULT;
-
-	memset(&tmp, 0, sizeof(tmp));
-
-	spin_lock_irqsave(&ch->ch_lock, lock_flags);
-	memcpy(&tmp, &ch->ch_digi, sizeof(tmp));
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
-	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
-		return -EFAULT;
-
-	return 0;
-}
-
-/*
- * dgap_tty_digiseta()
- *
- * Ioctl to set the information for ditty.
- *
- *
- *
- */
-static int dgap_tty_digiseta(struct channel_t *ch, struct board_t *bd,
-			     struct un_t *un, struct digi_t __user *new_info)
-{
-	struct digi_t new_digi;
-	ulong lock_flags = 0;
-	unsigned long lock_flags2;
-
-	if (copy_from_user(&new_digi, new_info, sizeof(struct digi_t)))
-		return -EFAULT;
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-	memcpy(&ch->ch_digi, &new_digi, sizeof(struct digi_t));
-
-	if (ch->ch_digi.digi_maxcps < 1)
-		ch->ch_digi.digi_maxcps = 1;
-
-	if (ch->ch_digi.digi_maxcps > 10000)
-		ch->ch_digi.digi_maxcps = 10000;
-
-	if (ch->ch_digi.digi_bufsize < 10)
-		ch->ch_digi.digi_bufsize = 10;
-
-	if (ch->ch_digi.digi_maxchar < 1)
-		ch->ch_digi.digi_maxchar = 1;
-
-	if (ch->ch_digi.digi_maxchar > ch->ch_digi.digi_bufsize)
-		ch->ch_digi.digi_maxchar = ch->ch_digi.digi_bufsize;
-
-	if (ch->ch_digi.digi_onlen > DIGI_PLEN)
-		ch->ch_digi.digi_onlen = DIGI_PLEN;
-
-	if (ch->ch_digi.digi_offlen > DIGI_PLEN)
-		ch->ch_digi.digi_offlen = DIGI_PLEN;
-
-	dgap_param(ch, bd, un->un_type);
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-	return 0;
-}
-
-/*
- * dgap_tty_digigetedelay()
- *
- * Ioctl to get the current edelay setting.
- *
- *
- *
- */
-static int dgap_tty_digigetedelay(struct tty_struct *tty, int __user *retinfo)
-{
-	struct channel_t *ch;
-	struct un_t *un;
-	int tmp;
-	ulong lock_flags;
-
-	if (!retinfo)
-		return -EFAULT;
-
-	if (!tty || tty->magic != TTY_MAGIC)
-		return -EFAULT;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return -EFAULT;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return -EFAULT;
-
-	memset(&tmp, 0, sizeof(tmp));
-
-	spin_lock_irqsave(&ch->ch_lock, lock_flags);
-	tmp = readw(&ch->ch_bs->edelay);
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
-	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
-		return -EFAULT;
-
-	return 0;
-}
-
-/*
- * dgap_tty_digisetedelay()
- *
- * Ioctl to set the EDELAY setting
- *
- */
-static int dgap_tty_digisetedelay(struct channel_t *ch, struct board_t *bd,
-				  struct un_t *un, int __user *new_info)
-{
-	int new_digi;
-	ulong lock_flags;
-	ulong lock_flags2;
-
-	if (copy_from_user(&new_digi, new_info, sizeof(int)))
-		return -EFAULT;
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-	writew((u16)new_digi, &ch->ch_bs->edelay);
-
-	dgap_param(ch, bd, un->un_type);
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-	return 0;
-}
-
-/*
- * dgap_tty_digigetcustombaud()
- *
- * Ioctl to get the current custom baud rate setting.
- */
-static int dgap_tty_digigetcustombaud(struct channel_t *ch, struct un_t *un,
-				      int __user *retinfo)
-{
-	int tmp;
-	ulong lock_flags;
-
-	if (!retinfo)
-		return -EFAULT;
-
-	memset(&tmp, 0, sizeof(tmp));
-
-	spin_lock_irqsave(&ch->ch_lock, lock_flags);
-	tmp = dgap_get_custom_baud(ch);
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
-	if (copy_to_user(retinfo, &tmp, sizeof(*retinfo)))
-		return -EFAULT;
-
-	return 0;
-}
-
-/*
- * dgap_tty_digisetcustombaud()
- *
- * Ioctl to set the custom baud rate setting
- */
-static int dgap_tty_digisetcustombaud(struct channel_t *ch, struct board_t *bd,
-				      struct un_t *un, int __user *new_info)
-{
-	uint new_rate;
-	ulong lock_flags;
-	ulong lock_flags2;
-
-	if (copy_from_user(&new_rate, new_info, sizeof(unsigned int)))
-		return -EFAULT;
-
-	if (bd->bd_flags & BD_FEP5PLUS) {
-		spin_lock_irqsave(&bd->bd_lock, lock_flags);
-		spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-		ch->ch_custom_speed = new_rate;
-
-		dgap_param(ch, bd, un->un_type);
-
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-	}
-
-	return 0;
-}
-
-/*
- * dgap_set_termios()
- */
-static void dgap_tty_set_termios(struct tty_struct *tty,
-				 struct ktermios *old_termios)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-	unsigned long lock_flags;
-	unsigned long lock_flags2;
-
-	if (!tty || tty->magic != TTY_MAGIC)
-		return;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return;
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-	ch->ch_c_cflag   = tty->termios.c_cflag;
-	ch->ch_c_iflag   = tty->termios.c_iflag;
-	ch->ch_c_oflag   = tty->termios.c_oflag;
-	ch->ch_c_lflag   = tty->termios.c_lflag;
-	ch->ch_startc    = tty->termios.c_cc[VSTART];
-	ch->ch_stopc     = tty->termios.c_cc[VSTOP];
-
-	dgap_carrier(ch);
-	dgap_param(ch, bd, un->un_type);
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-}
-
-static void dgap_tty_throttle(struct tty_struct *tty)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-	ulong lock_flags;
-	ulong lock_flags2;
-
-	if (!tty || tty->magic != TTY_MAGIC)
-		return;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return;
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-	ch->ch_flags |= (CH_RXBLOCK);
-#if 1
-	dgap_cmdw(ch, RPAUSE, 0, 0);
-#endif
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-}
-
-static void dgap_tty_unthrottle(struct tty_struct *tty)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-	ulong lock_flags;
-	ulong lock_flags2;
-
-	if (!tty || tty->magic != TTY_MAGIC)
-		return;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return;
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-	ch->ch_flags &= ~(CH_RXBLOCK);
-
-#if 1
-	dgap_cmdw(ch, RRESUME, 0, 0);
-#endif
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-}
-
-static struct board_t *find_board_by_major(unsigned int major)
-{
-	unsigned int i;
-
-	for (i = 0; i < MAXBOARDS; i++) {
-		struct board_t *brd = dgap_board[i];
-
-		if (!brd)
-			return NULL;
-		if (major == brd->serial_driver->major ||
-		    major == brd->print_driver->major)
-			return brd;
-	}
-
-	return NULL;
-}
-
-/************************************************************************
- *
- * TTY Entry points and helper functions
- *
- ************************************************************************/
-
-/*
- * dgap_tty_open()
- *
- */
-static int dgap_tty_open(struct tty_struct *tty, struct file *file)
-{
-	struct board_t *brd;
-	struct channel_t *ch;
-	struct un_t *un;
-	struct bs_t __iomem *bs;
-	uint major;
-	uint minor;
-	int rc;
-	ulong lock_flags;
-	ulong lock_flags2;
-	u16 head;
-
-	major = MAJOR(tty_devnum(tty));
-	minor = MINOR(tty_devnum(tty));
-
-	brd = find_board_by_major(major);
-	if (!brd)
-		return -EIO;
-
-	/*
-	 * If board is not yet up to a state of READY, go to
-	 * sleep waiting for it to happen or they cancel the open.
-	 */
-	rc = wait_event_interruptible(brd->state_wait,
-				      (brd->state & BOARD_READY));
-
-	if (rc)
-		return rc;
-
-	spin_lock_irqsave(&brd->bd_lock, lock_flags);
-
-	/* The wait above should guarantee this cannot happen */
-	if (brd->state != BOARD_READY) {
-		spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
-		return -EIO;
-	}
-
-	/* If opened device is greater than our number of ports, bail. */
-	if (MINOR(tty_devnum(tty)) > brd->nasync) {
-		spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
-		return -EIO;
-	}
-
-	ch = brd->channels[minor];
-	if (!ch) {
-		spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
-		return -EIO;
-	}
-
-	/* Grab channel lock */
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-	/* Figure out our type */
-	if (major == brd->serial_driver->major) {
-		un = &brd->channels[minor]->ch_tun;
-		un->un_type = DGAP_SERIAL;
-	} else if (major == brd->print_driver->major) {
-		un = &brd->channels[minor]->ch_pun;
-		un->un_type = DGAP_PRINT;
-	} else {
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
-		return -EIO;
-	}
-
-	/* Store our unit into driver_data, so we always have it available. */
-	tty->driver_data = un;
-
-	/*
-	 * Error if channel info pointer is NULL.
-	 */
-	bs = ch->ch_bs;
-	if (!bs) {
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
-		return -EIO;
-	}
-
-	/*
-	 * Initialize tty's
-	 */
-	if (!(un->un_flags & UN_ISOPEN)) {
-		/* Store important variables. */
-		un->un_tty     = tty;
-
-		/* Maybe do something here to the TTY struct as well? */
-	}
-
-	/*
-	 * Initialize if neither terminal or printer is open.
-	 */
-	if (!((ch->ch_tun.un_flags | ch->ch_pun.un_flags) & UN_ISOPEN)) {
-		ch->ch_mforce = 0;
-		ch->ch_mval = 0;
-
-		/*
-		 * Flush input queue.
-		 */
-		head = readw(&bs->rx_head);
-		writew(head, &bs->rx_tail);
-
-		ch->ch_flags = 0;
-		ch->pscan_state = 0;
-		ch->pscan_savechar = 0;
-
-		ch->ch_c_cflag   = tty->termios.c_cflag;
-		ch->ch_c_iflag   = tty->termios.c_iflag;
-		ch->ch_c_oflag   = tty->termios.c_oflag;
-		ch->ch_c_lflag   = tty->termios.c_lflag;
-		ch->ch_startc = tty->termios.c_cc[VSTART];
-		ch->ch_stopc  = tty->termios.c_cc[VSTOP];
-
-		/* TODO: flush our TTY struct here? */
-	}
-
-	dgap_carrier(ch);
-	/*
-	 * Run param in case we changed anything
-	 */
-	dgap_param(ch, brd, un->un_type);
-
-	/*
-	 * follow protocol for opening port
-	 */
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-	spin_unlock_irqrestore(&brd->bd_lock, lock_flags);
-
-	rc = dgap_block_til_ready(tty, file, ch);
-
-	if (!un->un_tty)
-		return -ENODEV;
-
-	/* No going back now, increment our unit and channel counters */
-	spin_lock_irqsave(&ch->ch_lock, lock_flags);
-	ch->ch_open_count++;
-	un->un_open_count++;
-	un->un_flags |= (UN_ISOPEN);
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
-	return rc;
-}
-
-/*
- * dgap_tty_close()
- *
- */
-static void dgap_tty_close(struct tty_struct *tty, struct file *file)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-	ulong lock_flags;
-
-	if (!tty || tty->magic != TTY_MAGIC)
-		return;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return;
-
-	spin_lock_irqsave(&ch->ch_lock, lock_flags);
-
-	/*
-	 * Determine if this is the last close or not - and if we agree about
-	 * which type of close it is with the Line Discipline
-	 */
-	if ((tty->count == 1) && (un->un_open_count != 1)) {
-		/*
-		 * Uh, oh.  tty->count is 1, which means that the tty
-		 * structure will be freed.  un_open_count should always
-		 * be one in these conditions.  If it's greater than
-		 * one, we've got real problems, since it means the
-		 * serial port won't be shutdown.
-		 */
-		un->un_open_count = 1;
-	}
-
-	if (--un->un_open_count < 0)
-		un->un_open_count = 0;
-
-	ch->ch_open_count--;
-
-	if (ch->ch_open_count && un->un_open_count) {
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-		return;
-	}
-
-	/* OK, its the last close on the unit */
-
-	un->un_flags |= UN_CLOSING;
-
-	tty->closing = 1;
-
-	/*
-	 * Only officially close channel if count is 0 and
-	 * DIGI_PRINTER bit is not set.
-	 */
-	if ((ch->ch_open_count == 0) &&
-	    !(ch->ch_digi.digi_flags & DIGI_PRINTER)) {
-		ch->ch_flags &= ~(CH_RXBLOCK);
-
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-
-		/* wait for output to drain */
-		/* This will also return if we take an interrupt */
-
-		dgap_wait_for_drain(tty);
-
-		dgap_tty_flush_buffer(tty);
-		tty_ldisc_flush(tty);
-
-		spin_lock_irqsave(&ch->ch_lock, lock_flags);
-
-		tty->closing = 0;
-
-		/*
-		 * If we have HUPCL set, lower DTR and RTS
-		 */
-		if (ch->ch_c_cflag & HUPCL) {
-			ch->ch_mostat &= ~(D_RTS(ch) | D_DTR(ch));
-			dgap_cmdb(ch, SMODEM, 0, D_DTR(ch) | D_RTS(ch), 0);
-
-			/*
-			 * Go to sleep to ensure RTS/DTR
-			 * have been dropped for modems to see it.
-			 */
-			spin_unlock_irqrestore(&ch->ch_lock,
-					       lock_flags);
-
-			/* .25 second delay for dropping RTS/DTR */
-			schedule_timeout_interruptible(msecs_to_jiffies(250));
-
-			spin_lock_irqsave(&ch->ch_lock, lock_flags);
-		}
-
-		ch->pscan_state = 0;
-		ch->pscan_savechar = 0;
-		ch->ch_baud_info = 0;
-	}
-
-	/*
-	 * turn off print device when closing print device.
-	 */
-	if ((un->un_type == DGAP_PRINT)  && (ch->ch_flags & CH_PRON)) {
-		dgap_wmove(ch, ch->ch_digi.digi_offstr,
-			   (int)ch->ch_digi.digi_offlen);
-		ch->ch_flags &= ~CH_PRON;
-	}
-
-	un->un_tty = NULL;
-	un->un_flags &= ~(UN_ISOPEN | UN_CLOSING);
-	tty->driver_data = NULL;
-
-	wake_up_interruptible(&ch->ch_flags_wait);
-	wake_up_interruptible(&un->un_flags_wait);
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags);
-}
-
-static void dgap_tty_start(struct tty_struct *tty)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-	ulong lock_flags;
-	ulong lock_flags2;
-
-	if (!tty || tty->magic != TTY_MAGIC)
-		return;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return;
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-	dgap_cmdw(ch, RESUMETX, 0, 0);
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-}
-
-static void dgap_tty_stop(struct tty_struct *tty)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-	ulong lock_flags;
-	ulong lock_flags2;
-
-	if (!tty || tty->magic != TTY_MAGIC)
-		return;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return;
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-	dgap_cmdw(ch, PAUSETX, 0, 0);
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-}
-
-/*
- * dgap_tty_flush_chars()
- *
- * Flush the cook buffer
- *
- * Note to self, and any other poor souls who venture here:
- *
- * flush in this case DOES NOT mean dispose of the data.
- * instead, it means "stop buffering and send it if you
- * haven't already."  Just guess how I figured that out...   SRW 2-Jun-98
- *
- * It is also always called in interrupt context - JAR 8-Sept-99
- */
-static void dgap_tty_flush_chars(struct tty_struct *tty)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-	ulong lock_flags;
-	ulong lock_flags2;
-
-	if (!tty || tty->magic != TTY_MAGIC)
-		return;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return;
-
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return;
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-	/* TODO: Do something here */
-
-	spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-	spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-}
-
-/*****************************************************************************
- *
- * The IOCTL function and all of its helpers
- *
- *****************************************************************************/
-
-/*
- * dgap_tty_ioctl()
- *
- * The usual assortment of ioctl's
- */
-static int dgap_tty_ioctl(struct tty_struct *tty, unsigned int cmd,
-			  unsigned long arg)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-	int rc;
-	u16 head;
-	ulong lock_flags = 0;
-	ulong lock_flags2 = 0;
-	void __user *uarg = (void __user *)arg;
-
-	if (!tty || tty->magic != TTY_MAGIC)
-		return -ENODEV;
-
-	un = tty->driver_data;
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return -ENODEV;
-
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return -ENODEV;
-
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return -ENODEV;
-
-	spin_lock_irqsave(&bd->bd_lock, lock_flags);
-	spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-	if (un->un_open_count <= 0) {
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return -EIO;
-	}
-
-	switch (cmd) {
-	/* Here are all the standard ioctl's that we MUST implement */
-	case TCSBRK:
-		/*
-		 * TCSBRK is SVID version: non-zero arg --> no break
-		 * this behaviour is exploited by tcdrain().
-		 *
-		 * According to POSIX.1 spec (7.2.2.1.2) breaks should be
-		 * between 0.25 and 0.5 seconds so we'll ask for something
-		 * in the middle: 0.375 seconds.
-		 */
-		rc = tty_check_change(tty);
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		if (rc)
-			return rc;
-
-		rc = dgap_wait_for_drain(tty);
-
-		if (rc)
-			return -EINTR;
-
-		spin_lock_irqsave(&bd->bd_lock, lock_flags);
-		spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-		if (((cmd == TCSBRK) && (!arg)) || (cmd == TCSBRKP))
-			dgap_cmdw(ch, SBREAK, (u16)SBREAK_TIME, 0);
-
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-		return 0;
-
-	case TCSBRKP:
-		/* support for POSIX tcsendbreak()
-
-		 * According to POSIX.1 spec (7.2.2.1.2) breaks should be
-		 * between 0.25 and 0.5 seconds so we'll ask for something
-		 * in the middle: 0.375 seconds.
-		 */
-		rc = tty_check_change(tty);
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		if (rc)
-			return rc;
-
-		rc = dgap_wait_for_drain(tty);
-		if (rc)
-			return -EINTR;
-
-		spin_lock_irqsave(&bd->bd_lock, lock_flags);
-		spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-		dgap_cmdw(ch, SBREAK, (u16)SBREAK_TIME, 0);
-
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-		return 0;
-
-	case TIOCSBRK:
-		/*
-		 * FEP5 doesn't support turning on a break unconditionally.
-		 * The FEP5 device will stop sending a break automatically
-		 * after the specified time value that was sent when turning on
-		 * the break.
-		 */
-		rc = tty_check_change(tty);
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		if (rc)
-			return rc;
-
-		rc = dgap_wait_for_drain(tty);
-		if (rc)
-			return -EINTR;
-
-		spin_lock_irqsave(&bd->bd_lock, lock_flags);
-		spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-
-		dgap_cmdw(ch, SBREAK, (u16)SBREAK_TIME, 0);
-
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-		return 0;
-
-	case TIOCCBRK:
-		/*
-		 * FEP5 doesn't support turning off a break unconditionally.
-		 * The FEP5 device will stop sending a break automatically
-		 * after the specified time value that was sent when turning on
-		 * the break.
-		 */
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return 0;
-
-	case TIOCGSOFTCAR:
-
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-		return put_user(C_CLOCAL(tty) ? 1 : 0,
-				(unsigned long __user *)arg);
-
-	case TIOCSSOFTCAR:
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-		rc = get_user(arg, (unsigned long __user *)arg);
-		if (rc)
-			return rc;
-
-		spin_lock_irqsave(&bd->bd_lock, lock_flags);
-		spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-		tty->termios.c_cflag = ((tty->termios.c_cflag & ~CLOCAL) |
-						(arg ? CLOCAL : 0));
-		dgap_param(ch, bd, un->un_type);
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-		return 0;
-
-	case TIOCMGET:
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return dgap_get_modem_info(ch, uarg);
-
-	case TIOCMBIS:
-	case TIOCMBIC:
-	case TIOCMSET:
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return dgap_set_modem_info(ch, bd, un, cmd, uarg);
-
-		/*
-		 * Here are any additional ioctl's that we want to implement
-		 */
-
-	case TCFLSH:
-		/*
-		 * The linux tty driver doesn't have a flush
-		 * input routine for the driver, assuming all backed
-		 * up data is in the line disc. buffers.  However,
-		 * we all know that's not the case.  Here, we
-		 * act on the ioctl, but then lie and say we didn't
-		 * so the line discipline will process the flush
-		 * also.
-		 */
-		rc = tty_check_change(tty);
-		if (rc) {
-			spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-			spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-			return rc;
-		}
-
-		if ((arg == TCIFLUSH) || (arg == TCIOFLUSH)) {
-			if (!(un->un_type == DGAP_PRINT)) {
-				head = readw(&ch->ch_bs->rx_head);
-				writew(head, &ch->ch_bs->rx_tail);
-				writeb(0, &ch->ch_bs->orun);
-			}
-		}
-
-		if ((arg != TCOFLUSH) && (arg != TCIOFLUSH)) {
-			/* pretend we didn't recognize this IOCTL */
-			spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-			spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-			return -ENOIOCTLCMD;
-		}
-
-		ch->ch_flags &= ~CH_STOP;
-		head = readw(&ch->ch_bs->tx_head);
-		dgap_cmdw(ch, FLUSHTX, (u16)head, 0);
-		dgap_cmdw(ch, RESUMETX, 0, 0);
-		if (ch->ch_tun.un_flags & (UN_LOW | UN_EMPTY)) {
-			ch->ch_tun.un_flags &= ~(UN_LOW | UN_EMPTY);
-			wake_up_interruptible(&ch->ch_tun.un_flags_wait);
-		}
-		if (ch->ch_pun.un_flags & (UN_LOW | UN_EMPTY)) {
-			ch->ch_pun.un_flags &= ~(UN_LOW | UN_EMPTY);
-			wake_up_interruptible(&ch->ch_pun.un_flags_wait);
-		}
-		if (waitqueue_active(&tty->write_wait))
-			wake_up_interruptible(&tty->write_wait);
-
-		/* Can't hold any locks when calling tty_wakeup! */
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		tty_wakeup(tty);
-
-		/* pretend we didn't recognize this IOCTL */
-		return -ENOIOCTLCMD;
-
-	case TCSETSF:
-	case TCSETSW:
-		/*
-		 * The linux tty driver doesn't have a flush
-		 * input routine for the driver, assuming all backed
-		 * up data is in the line disc. buffers.  However,
-		 * we all know that's not the case.  Here, we
-		 * act on the ioctl, but then lie and say we didn't
-		 * so the line discipline will process the flush
-		 * also.
-		 */
-		if (cmd == TCSETSF) {
-			/* flush rx */
-			ch->ch_flags &= ~CH_STOP;
-			head = readw(&ch->ch_bs->rx_head);
-			writew(head, &ch->ch_bs->rx_tail);
-		}
-
-		/* now wait for all the output to drain */
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		rc = dgap_wait_for_drain(tty);
-		if (rc)
-			return -EINTR;
-
-		/* pretend we didn't recognize this */
-		return -ENOIOCTLCMD;
-
-	case TCSETAW:
-
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		rc = dgap_wait_for_drain(tty);
-		if (rc)
-			return -EINTR;
-
-		/* pretend we didn't recognize this */
-		return -ENOIOCTLCMD;
-
-	case TCXONC:
-		/*
-		 * The Linux Line Discipline (LD) would do this for us if we
-		 * let it, but we have the special firmware options to do this
-		 * the "right way" regardless of hardware or software flow
-		 * control so we'll do it outselves instead of letting the LD
-		 * do it.
-		 */
-		rc = tty_check_change(tty);
-		if (rc) {
-			spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-			spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-			return rc;
-		}
-
-		switch (arg) {
-		case TCOON:
-			spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-			spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-			dgap_tty_start(tty);
-			return 0;
-		case TCOOFF:
-			spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-			spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-			dgap_tty_stop(tty);
-			return 0;
-		case TCION:
-			spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-			spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-			/* Make the ld do it */
-			return -ENOIOCTLCMD;
-		case TCIOFF:
-			spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-			spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-			/* Make the ld do it */
-			return -ENOIOCTLCMD;
-		default:
-			spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-			spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-			return -EINVAL;
-		}
-
-	case DIGI_GETA:
-		/* get information for ditty */
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return dgap_tty_digigeta(ch, uarg);
-
-	case DIGI_SETAW:
-	case DIGI_SETAF:
-
-		/* set information for ditty */
-		if (cmd == (DIGI_SETAW)) {
-			spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-			spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-			rc = dgap_wait_for_drain(tty);
-			if (rc)
-				return -EINTR;
-			spin_lock_irqsave(&bd->bd_lock, lock_flags);
-			spin_lock_irqsave(&ch->ch_lock, lock_flags2);
-		} else
-			tty_ldisc_flush(tty);
-		/* fall thru */
-
-	case DIGI_SETA:
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return dgap_tty_digiseta(ch, bd, un, uarg);
-
-	case DIGI_GEDELAY:
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return dgap_tty_digigetedelay(tty, uarg);
-
-	case DIGI_SEDELAY:
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return dgap_tty_digisetedelay(ch, bd, un, uarg);
-
-	case DIGI_GETCUSTOMBAUD:
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return dgap_tty_digigetcustombaud(ch, un, uarg);
-
-	case DIGI_SETCUSTOMBAUD:
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return dgap_tty_digisetcustombaud(ch, bd, un, uarg);
-
-	case DIGI_RESET_PORT:
-		dgap_firmware_reset_port(ch);
-		dgap_param(ch, bd, un->un_type);
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-		return 0;
-
-	default:
-		spin_unlock_irqrestore(&ch->ch_lock, lock_flags2);
-		spin_unlock_irqrestore(&bd->bd_lock, lock_flags);
-
-		return -ENOIOCTLCMD;
-	}
-}
-
-static const struct tty_operations dgap_tty_ops = {
-	.open = dgap_tty_open,
-	.close = dgap_tty_close,
-	.write = dgap_tty_write,
-	.write_room = dgap_tty_write_room,
-	.flush_buffer = dgap_tty_flush_buffer,
-	.chars_in_buffer = dgap_tty_chars_in_buffer,
-	.flush_chars = dgap_tty_flush_chars,
-	.ioctl = dgap_tty_ioctl,
-	.set_termios = dgap_tty_set_termios,
-	.stop = dgap_tty_stop,
-	.start = dgap_tty_start,
-	.throttle = dgap_tty_throttle,
-	.unthrottle = dgap_tty_unthrottle,
-	.hangup = dgap_tty_hangup,
-	.put_char = dgap_tty_put_char,
-	.tiocmget = dgap_tty_tiocmget,
-	.tiocmset = dgap_tty_tiocmset,
-	.break_ctl = dgap_tty_send_break,
-	.wait_until_sent = dgap_tty_wait_until_sent,
-	.send_xchar = dgap_tty_send_xchar
-};
-
-/************************************************************************
- *
- * TTY Initialization/Cleanup Functions
- *
- ************************************************************************/
-
-/*
- * dgap_tty_register()
- *
- * Init the tty subsystem for this board.
- */
-static int dgap_tty_register(struct board_t *brd)
-{
-	int rc;
-
-	brd->serial_driver = tty_alloc_driver(MAXPORTS,
-					      TTY_DRIVER_REAL_RAW |
-					      TTY_DRIVER_DYNAMIC_DEV |
-					      TTY_DRIVER_HARDWARE_BREAK);
-	if (IS_ERR(brd->serial_driver))
-		return PTR_ERR(brd->serial_driver);
-
-	snprintf(brd->serial_name, MAXTTYNAMELEN, "tty_dgap_%d_",
-		 brd->boardnum);
-	brd->serial_driver->name = brd->serial_name;
-	brd->serial_driver->name_base = 0;
-	brd->serial_driver->major = 0;
-	brd->serial_driver->minor_start = 0;
-	brd->serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
-	brd->serial_driver->subtype = SERIAL_TYPE_NORMAL;
-	brd->serial_driver->init_termios = dgap_default_termios;
-	brd->serial_driver->driver_name = DRVSTR;
-
-	/*
-	 * Entry points for driver.  Called by the kernel from
-	 * tty_io.c and n_tty.c.
-	 */
-	tty_set_operations(brd->serial_driver, &dgap_tty_ops);
-
-	/*
-	 * If we're doing transparent print, we have to do all of the above
-	 * again, separately so we don't get the LD confused about what major
-	 * we are when we get into the dgap_tty_open() routine.
-	 */
-	brd->print_driver = tty_alloc_driver(MAXPORTS,
-					     TTY_DRIVER_REAL_RAW |
-					     TTY_DRIVER_DYNAMIC_DEV |
-					     TTY_DRIVER_HARDWARE_BREAK);
-	if (IS_ERR(brd->print_driver)) {
-		rc = PTR_ERR(brd->print_driver);
-		goto free_serial_drv;
-	}
-
-	snprintf(brd->print_name, MAXTTYNAMELEN, "pr_dgap_%d_",
-		 brd->boardnum);
-	brd->print_driver->name = brd->print_name;
-	brd->print_driver->name_base = 0;
-	brd->print_driver->major = 0;
-	brd->print_driver->minor_start = 0;
-	brd->print_driver->type = TTY_DRIVER_TYPE_SERIAL;
-	brd->print_driver->subtype = SERIAL_TYPE_NORMAL;
-	brd->print_driver->init_termios = dgap_default_termios;
-	brd->print_driver->driver_name = DRVSTR;
-
-	/*
-	 * Entry points for driver.  Called by the kernel from
-	 * tty_io.c and n_tty.c.
-	 */
-	tty_set_operations(brd->print_driver, &dgap_tty_ops);
-
-	/* Register tty devices */
-	rc = tty_register_driver(brd->serial_driver);
-	if (rc < 0)
-		goto free_print_drv;
-
-	/* Register Transparent Print devices */
-	rc = tty_register_driver(brd->print_driver);
-	if (rc < 0)
-		goto unregister_serial_drv;
-
-	return 0;
-
-unregister_serial_drv:
-	tty_unregister_driver(brd->serial_driver);
-free_print_drv:
-	put_tty_driver(brd->print_driver);
-free_serial_drv:
-	put_tty_driver(brd->serial_driver);
-
-	return rc;
-}
-
-static void dgap_tty_unregister(struct board_t *brd)
-{
-	tty_unregister_driver(brd->print_driver);
-	tty_unregister_driver(brd->serial_driver);
-	put_tty_driver(brd->print_driver);
-	put_tty_driver(brd->serial_driver);
-}
-
-static int dgap_alloc_flipbuf(struct board_t *brd)
-{
-	/*
-	 * allocate flip buffer for board.
-	 */
-	brd->flipbuf = kmalloc(MYFLIPLEN, GFP_KERNEL);
-	if (!brd->flipbuf)
-		return -ENOMEM;
-
-	brd->flipflagbuf = kmalloc(MYFLIPLEN, GFP_KERNEL);
-	if (!brd->flipflagbuf) {
-		kfree(brd->flipbuf);
-		return -ENOMEM;
-	}
-
-	return 0;
-}
-
-static void dgap_free_flipbuf(struct board_t *brd)
-{
-	kfree(brd->flipbuf);
-	kfree(brd->flipflagbuf);
-}
-
-static struct board_t *dgap_verify_board(struct device *p)
-{
-	struct board_t *bd;
-
-	if (!p)
-		return NULL;
-
-	bd = dev_get_drvdata(p);
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC || bd->state != BOARD_READY)
-		return NULL;
-
-	return bd;
-}
-
-static ssize_t dgap_ports_state_show(struct device *p,
-				     struct device_attribute *attr,
-				     char *buf)
-{
-	struct board_t *bd;
-	int count = 0;
-	unsigned int i;
-
-	bd = dgap_verify_board(p);
-	if (!bd)
-		return 0;
-
-	for (i = 0; i < bd->nasync; i++) {
-		count += snprintf(buf + count, PAGE_SIZE - count,
-			"%d %s\n", bd->channels[i]->ch_portnum,
-			bd->channels[i]->ch_open_count ? "Open" : "Closed");
-	}
-	return count;
-}
-static DEVICE_ATTR(ports_state, S_IRUSR, dgap_ports_state_show, NULL);
-
-static ssize_t dgap_ports_baud_show(struct device *p,
-				    struct device_attribute *attr,
-				    char *buf)
-{
-	struct board_t *bd;
-	int count = 0;
-	unsigned int i;
-
-	bd = dgap_verify_board(p);
-	if (!bd)
-		return 0;
-
-	for (i = 0; i < bd->nasync; i++) {
-		count +=  snprintf(buf + count, PAGE_SIZE - count, "%d %d\n",
-				   bd->channels[i]->ch_portnum,
-				   bd->channels[i]->ch_baud_info);
-	}
-	return count;
-}
-static DEVICE_ATTR(ports_baud, S_IRUSR, dgap_ports_baud_show, NULL);
-
-static ssize_t dgap_ports_msignals_show(struct device *p,
-					struct device_attribute *attr,
-					char *buf)
-{
-	struct board_t *bd;
-	int count = 0;
-	unsigned int i;
-
-	bd = dgap_verify_board(p);
-	if (!bd)
-		return 0;
-
-	for (i = 0; i < bd->nasync; i++) {
-		if (bd->channels[i]->ch_open_count)
-			count += snprintf(buf + count, PAGE_SIZE - count,
-				"%d %s %s %s %s %s %s\n",
-				bd->channels[i]->ch_portnum,
-				(bd->channels[i]->ch_mostat &
-				 UART_MCR_RTS) ? "RTS" : "",
-				(bd->channels[i]->ch_mistat &
-				 UART_MSR_CTS) ? "CTS" : "",
-				(bd->channels[i]->ch_mostat &
-				 UART_MCR_DTR) ? "DTR" : "",
-				(bd->channels[i]->ch_mistat &
-				 UART_MSR_DSR) ? "DSR" : "",
-				(bd->channels[i]->ch_mistat &
-				 UART_MSR_DCD) ? "DCD" : "",
-				(bd->channels[i]->ch_mistat &
-				 UART_MSR_RI)  ? "RI"  : "");
-		else
-			count += snprintf(buf + count, PAGE_SIZE - count,
-				"%d\n", bd->channels[i]->ch_portnum);
-	}
-	return count;
-}
-static DEVICE_ATTR(ports_msignals, S_IRUSR, dgap_ports_msignals_show, NULL);
-
-static ssize_t dgap_ports_iflag_show(struct device *p,
-				     struct device_attribute *attr,
-				     char *buf)
-{
-	struct board_t *bd;
-	int count = 0;
-	unsigned int i;
-
-	bd = dgap_verify_board(p);
-	if (!bd)
-		return 0;
-
-	for (i = 0; i < bd->nasync; i++)
-		count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
-				  bd->channels[i]->ch_portnum,
-				  bd->channels[i]->ch_c_iflag);
-	return count;
-}
-static DEVICE_ATTR(ports_iflag, S_IRUSR, dgap_ports_iflag_show, NULL);
-
-static ssize_t dgap_ports_cflag_show(struct device *p,
-				     struct device_attribute *attr,
-				     char *buf)
-{
-	struct board_t *bd;
-	int count = 0;
-	unsigned int i;
-
-	bd = dgap_verify_board(p);
-	if (!bd)
-		return 0;
-
-	for (i = 0; i < bd->nasync; i++)
-		count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
-				  bd->channels[i]->ch_portnum,
-				  bd->channels[i]->ch_c_cflag);
-	return count;
-}
-static DEVICE_ATTR(ports_cflag, S_IRUSR, dgap_ports_cflag_show, NULL);
-
-static ssize_t dgap_ports_oflag_show(struct device *p,
-				     struct device_attribute *attr,
-				     char *buf)
-{
-	struct board_t *bd;
-	int count = 0;
-	unsigned int i;
-
-	bd = dgap_verify_board(p);
-	if (!bd)
-		return 0;
-
-	for (i = 0; i < bd->nasync; i++)
-		count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
-				  bd->channels[i]->ch_portnum,
-				  bd->channels[i]->ch_c_oflag);
-	return count;
-}
-static DEVICE_ATTR(ports_oflag, S_IRUSR, dgap_ports_oflag_show, NULL);
-
-static ssize_t dgap_ports_lflag_show(struct device *p,
-				     struct device_attribute *attr,
-				     char *buf)
-{
-	struct board_t *bd;
-	int count = 0;
-	unsigned int i;
-
-	bd = dgap_verify_board(p);
-	if (!bd)
-		return 0;
-
-	for (i = 0; i < bd->nasync; i++)
-		count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
-				  bd->channels[i]->ch_portnum,
-				  bd->channels[i]->ch_c_lflag);
-	return count;
-}
-static DEVICE_ATTR(ports_lflag, S_IRUSR, dgap_ports_lflag_show, NULL);
-
-static ssize_t dgap_ports_digi_flag_show(struct device *p,
-					 struct device_attribute *attr,
-					 char *buf)
-{
-	struct board_t *bd;
-	int count = 0;
-	unsigned int i;
-
-	bd = dgap_verify_board(p);
-	if (!bd)
-		return 0;
-
-	for (i = 0; i < bd->nasync; i++)
-		count += snprintf(buf + count, PAGE_SIZE - count, "%d %x\n",
-				  bd->channels[i]->ch_portnum,
-				  bd->channels[i]->ch_digi.digi_flags);
-	return count;
-}
-static DEVICE_ATTR(ports_digi_flag, S_IRUSR, dgap_ports_digi_flag_show, NULL);
-
-static ssize_t dgap_ports_rxcount_show(struct device *p,
-				       struct device_attribute *attr,
-				       char *buf)
-{
-	struct board_t *bd;
-	int count = 0;
-	unsigned int i;
-
-	bd = dgap_verify_board(p);
-	if (!bd)
-		return 0;
-
-	for (i = 0; i < bd->nasync; i++)
-		count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
-				  bd->channels[i]->ch_portnum,
-				  bd->channels[i]->ch_rxcount);
-	return count;
-}
-static DEVICE_ATTR(ports_rxcount, S_IRUSR, dgap_ports_rxcount_show, NULL);
-
-static ssize_t dgap_ports_txcount_show(struct device *p,
-				       struct device_attribute *attr,
-				       char *buf)
-{
-	struct board_t *bd;
-	int count = 0;
-	unsigned int i;
-
-	bd = dgap_verify_board(p);
-	if (!bd)
-		return 0;
-
-	for (i = 0; i < bd->nasync; i++)
-		count += snprintf(buf + count, PAGE_SIZE - count, "%d %ld\n",
-				  bd->channels[i]->ch_portnum,
-				  bd->channels[i]->ch_txcount);
-	return count;
-}
-static DEVICE_ATTR(ports_txcount, S_IRUSR, dgap_ports_txcount_show, NULL);
-
-static ssize_t dgap_tty_state_show(struct device *d,
-				   struct device_attribute *attr,
-				   char *buf)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%s", un->un_open_count ?
-			"Open" : "Closed");
-}
-static DEVICE_ATTR(state, S_IRUSR, dgap_tty_state_show, NULL);
-
-static ssize_t dgap_tty_baud_show(struct device *d,
-				  struct device_attribute *attr,
-				  char *buf)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%d\n", ch->ch_baud_info);
-}
-static DEVICE_ATTR(baud, S_IRUSR, dgap_tty_baud_show, NULL);
-
-static ssize_t dgap_tty_msignals_show(struct device *d,
-				      struct device_attribute *attr,
-				      char *buf)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	if (ch->ch_open_count) {
-		return snprintf(buf, PAGE_SIZE, "%s %s %s %s %s %s\n",
-			(ch->ch_mostat & UART_MCR_RTS) ? "RTS" : "",
-			(ch->ch_mistat & UART_MSR_CTS) ? "CTS" : "",
-			(ch->ch_mostat & UART_MCR_DTR) ? "DTR" : "",
-			(ch->ch_mistat & UART_MSR_DSR) ? "DSR" : "",
-			(ch->ch_mistat & UART_MSR_DCD) ? "DCD" : "",
-			(ch->ch_mistat & UART_MSR_RI)  ? "RI"  : "");
-	}
-	return 0;
-}
-static DEVICE_ATTR(msignals, S_IRUSR, dgap_tty_msignals_show, NULL);
-
-static ssize_t dgap_tty_iflag_show(struct device *d,
-				   struct device_attribute *attr,
-				   char *buf)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_iflag);
-}
-static DEVICE_ATTR(iflag, S_IRUSR, dgap_tty_iflag_show, NULL);
-
-static ssize_t dgap_tty_cflag_show(struct device *d,
-				   struct device_attribute *attr,
-				   char *buf)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_cflag);
-}
-static DEVICE_ATTR(cflag, S_IRUSR, dgap_tty_cflag_show, NULL);
-
-static ssize_t dgap_tty_oflag_show(struct device *d,
-				   struct device_attribute *attr,
-				   char *buf)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_oflag);
-}
-static DEVICE_ATTR(oflag, S_IRUSR, dgap_tty_oflag_show, NULL);
-
-static ssize_t dgap_tty_lflag_show(struct device *d,
-				   struct device_attribute *attr,
-				   char *buf)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_c_lflag);
-}
-static DEVICE_ATTR(lflag, S_IRUSR, dgap_tty_lflag_show, NULL);
-
-static ssize_t dgap_tty_digi_flag_show(struct device *d,
-				       struct device_attribute *attr,
-				       char *buf)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%x\n", ch->ch_digi.digi_flags);
-}
-static DEVICE_ATTR(digi_flag, S_IRUSR, dgap_tty_digi_flag_show, NULL);
-
-static ssize_t dgap_tty_rxcount_show(struct device *d,
-				     struct device_attribute *attr,
-				     char *buf)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_rxcount);
-}
-static DEVICE_ATTR(rxcount, S_IRUSR, dgap_tty_rxcount_show, NULL);
-
-static ssize_t dgap_tty_txcount_show(struct device *d,
-				     struct device_attribute *attr,
-				     char *buf)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	return snprintf(buf, PAGE_SIZE, "%ld\n", ch->ch_txcount);
-}
-static DEVICE_ATTR(txcount, S_IRUSR, dgap_tty_txcount_show, NULL);
-
-static ssize_t dgap_tty_name_show(struct device *d,
-				  struct device_attribute *attr,
-				  char *buf)
-{
-	struct board_t *bd;
-	struct channel_t *ch;
-	struct un_t *un;
-	int cn;
-	int bn;
-	struct cnode *cptr;
-	int found = FALSE;
-	int ncount = 0;
-	int starto = 0;
-	int i;
-
-	if (!d)
-		return 0;
-	un = dev_get_drvdata(d);
-	if (!un || un->magic != DGAP_UNIT_MAGIC)
-		return 0;
-	ch = un->un_ch;
-	if (!ch || ch->magic != DGAP_CHANNEL_MAGIC)
-		return 0;
-	bd = ch->ch_bd;
-	if (!bd || bd->magic != DGAP_BOARD_MAGIC)
-		return 0;
-	if (bd->state != BOARD_READY)
-		return 0;
-
-	bn = bd->boardnum;
-	cn = ch->ch_portnum;
-
-	for (cptr = bd->bd_config; cptr; cptr = cptr->next) {
-		if ((cptr->type == BNODE) &&
-		    ((cptr->u.board.type == APORT2_920P) ||
-		     (cptr->u.board.type == APORT4_920P) ||
-		     (cptr->u.board.type == APORT8_920P) ||
-		     (cptr->u.board.type == PAPORT4) ||
-		     (cptr->u.board.type == PAPORT8))) {
-			found = TRUE;
-			if (cptr->u.board.v_start)
-				starto = cptr->u.board.start;
-			else
-				starto = 1;
-		}
-
-		if (cptr->type == TNODE && found == TRUE) {
-			char *ptr1;
-
-			if (strstr(cptr->u.ttyname, "tty")) {
-				ptr1 = cptr->u.ttyname;
-				ptr1 += 3;
-			} else
-				ptr1 = cptr->u.ttyname;
-
-			for (i = 0; i < dgap_config_get_num_prts(bd); i++) {
-				if (cn != i)
-					continue;
-
-				return snprintf(buf, PAGE_SIZE, "%s%s%02d\n",
-						(un->un_type == DGAP_PRINT) ?
-						 "pr" : "tty",
-						ptr1, i + starto);
-			}
-		}
-
-		if (cptr->type == CNODE) {
-			for (i = 0; i < cptr->u.conc.nport; i++) {
-				if (cn != (i + ncount))
-					continue;
-
-				return snprintf(buf, PAGE_SIZE, "%s%s%02ld\n",
-						(un->un_type == DGAP_PRINT) ?
-						 "pr" : "tty",
-						cptr->u.conc.id,
-						i + (cptr->u.conc.v_start ?
-						     cptr->u.conc.start : 1));
-			}
-
-			ncount += cptr->u.conc.nport;
-		}
-
-		if (cptr->type == MNODE) {
-			for (i = 0; i < cptr->u.module.nport; i++) {
-				if (cn != (i + ncount))
-					continue;
-
-				return snprintf(buf, PAGE_SIZE, "%s%s%02ld\n",
-						(un->un_type == DGAP_PRINT) ?
-						 "pr" : "tty",
-						cptr->u.module.id,
-						i + (cptr->u.module.v_start ?
-						     cptr->u.module.start : 1));
-			}
-
-			ncount += cptr->u.module.nport;
-		}
-	}
-
-	return snprintf(buf, PAGE_SIZE, "%s_dgap_%d_%d\n",
-		(un->un_type == DGAP_PRINT) ? "pr" : "tty", bn, cn);
-}
-static DEVICE_ATTR(custom_name, S_IRUSR, dgap_tty_name_show, NULL);
-
-static struct attribute *dgap_sysfs_tty_entries[] = {
-	&dev_attr_state.attr,
-	&dev_attr_baud.attr,
-	&dev_attr_msignals.attr,
-	&dev_attr_iflag.attr,
-	&dev_attr_cflag.attr,
-	&dev_attr_oflag.attr,
-	&dev_attr_lflag.attr,
-	&dev_attr_digi_flag.attr,
-	&dev_attr_rxcount.attr,
-	&dev_attr_txcount.attr,
-	&dev_attr_custom_name.attr,
-	NULL
-};
-
-
-/* this function creates the sys files that will export each signal status
- * to sysfs each value will be put in a separate filename
- */
-static void dgap_create_ports_sysfiles(struct board_t *bd)
-{
-	dev_set_drvdata(&bd->pdev->dev, bd);
-	device_create_file(&bd->pdev->dev, &dev_attr_ports_state);
-	device_create_file(&bd->pdev->dev, &dev_attr_ports_baud);
-	device_create_file(&bd->pdev->dev, &dev_attr_ports_msignals);
-	device_create_file(&bd->pdev->dev, &dev_attr_ports_iflag);
-	device_create_file(&bd->pdev->dev, &dev_attr_ports_cflag);
-	device_create_file(&bd->pdev->dev, &dev_attr_ports_oflag);
-	device_create_file(&bd->pdev->dev, &dev_attr_ports_lflag);
-	device_create_file(&bd->pdev->dev, &dev_attr_ports_digi_flag);
-	device_create_file(&bd->pdev->dev, &dev_attr_ports_rxcount);
-	device_create_file(&bd->pdev->dev, &dev_attr_ports_txcount);
-}
-
-/* removes all the sys files created for that port */
-static void dgap_remove_ports_sysfiles(struct board_t *bd)
-{
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_state);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_baud);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_msignals);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_iflag);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_cflag);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_oflag);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_lflag);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_digi_flag);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_rxcount);
-	device_remove_file(&bd->pdev->dev, &dev_attr_ports_txcount);
-}
-
-/*
- * Copies the BIOS code from the user to the board,
- * and starts the BIOS running.
- */
-static void dgap_do_bios_load(struct board_t *brd, const u8 *ubios, int len)
-{
-	u8 __iomem *addr;
-	uint offset;
-	unsigned int i;
-
-	if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
-		return;
-
-	addr = brd->re_map_membase;
-
-	/*
-	 * clear POST area
-	 */
-	for (i = 0; i < 16; i++)
-		writeb(0, addr + POSTAREA + i);
-
-	/*
-	 * Download bios
-	 */
-	offset = 0x1000;
-	memcpy_toio(addr + offset, ubios, len);
-
-	writel(0x0bf00401, addr);
-	writel(0, (addr + 4));
-
-	/* Clear the reset, and change states. */
-	writeb(FEPCLR, brd->re_map_port);
-}
-
-/*
- * Checks to see if the BIOS completed running on the card.
- */
-static int dgap_test_bios(struct board_t *brd)
-{
-	u8 __iomem *addr;
-	u16 word;
-	u16 err1;
-	u16 err2;
-
-	if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
-		return -EINVAL;
-
-	addr = brd->re_map_membase;
-	word = readw(addr + POSTAREA);
-
-	/*
-	 * It can take 5-6 seconds for a board to
-	 * pass the bios self test and post results.
-	 * Give it 10 seconds.
-	 */
-	brd->wait_for_bios = 0;
-	while (brd->wait_for_bios < 1000) {
-		/* Check to see if BIOS thinks board is good. (GD). */
-		if (word == *(u16 *)"GD")
-			return 0;
-		msleep_interruptible(10);
-		brd->wait_for_bios++;
-		word = readw(addr + POSTAREA);
-	}
-
-	/* Gave up on board after too long of time taken */
-	err1 = readw(addr + SEQUENCE);
-	err2 = readw(addr + ERROR);
-	dev_warn(&brd->pdev->dev, "%s failed diagnostics.  Error #(%x,%x).\n",
-		 brd->name, err1, err2);
-	brd->state = BOARD_FAILED;
-	brd->dpastatus = BD_NOBIOS;
-
-	return -EIO;
-}
-
-/*
- * Copies the FEP code from the user to the board,
- * and starts the FEP running.
- */
-static void dgap_do_fep_load(struct board_t *brd, const u8 *ufep, int len)
-{
-	u8 __iomem *addr;
-	uint offset;
-
-	if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
-		return;
-
-	addr = brd->re_map_membase;
-
-	/*
-	 * Download FEP
-	 */
-	offset = 0x1000;
-	memcpy_toio(addr + offset, ufep, len);
-
-	/*
-	 * If board is a concentrator product, we need to give
-	 * it its config string describing how the concentrators look.
-	 */
-	if ((brd->type == PCX) || (brd->type == PEPC)) {
-		u8 string[100];
-		u8 __iomem *config;
-		u8 *xconfig;
-		unsigned int i = 0;
-
-		xconfig = dgap_create_config_string(brd, string);
-
-		/* Write string to board memory */
-		config = addr + CONFIG;
-		for (; i < CONFIGSIZE; i++, config++, xconfig++) {
-			writeb(*xconfig, config);
-			if ((*xconfig & 0xff) == 0xff)
-				break;
-		}
-	}
-
-	writel(0xbfc01004, (addr + 0xc34));
-	writel(0x3, (addr + 0xc30));
-}
-
-/*
- * Waits for the FEP to report thats its ready for us to use.
- */
-static int dgap_test_fep(struct board_t *brd)
-{
-	u8 __iomem *addr;
-	u16 word;
-	u16 err1;
-	u16 err2;
-
-	if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
-		return -EINVAL;
-
-	addr = brd->re_map_membase;
-	word = readw(addr + FEPSTAT);
-
-	/*
-	 * It can take 2-3 seconds for the FEP to
-	 * be up and running. Give it 5 secs.
-	 */
-	brd->wait_for_fep = 0;
-	while (brd->wait_for_fep < 500) {
-		/* Check to see if FEP is up and running now. */
-		if (word == *(u16 *)"OS") {
-			/*
-			 * Check to see if the board can support FEP5+ commands.
-			*/
-			word = readw(addr + FEP5_PLUS);
-			if (word == *(u16 *)"5A")
-				brd->bd_flags |= BD_FEP5PLUS;
-
-			return 0;
-		}
-		msleep_interruptible(10);
-		brd->wait_for_fep++;
-		word = readw(addr + FEPSTAT);
-	}
-
-	/* Gave up on board after too long of time taken */
-	err1 = readw(addr + SEQUENCE);
-	err2 = readw(addr + ERROR);
-	dev_warn(&brd->pdev->dev,
-		 "FEPOS for %s not functioning.  Error #(%x,%x).\n",
-		 brd->name, err1, err2);
-	brd->state = BOARD_FAILED;
-	brd->dpastatus = BD_NOFEP;
-
-	return -EIO;
-}
-
-/*
- * Physically forces the FEP5 card to reset itself.
- */
-static void dgap_do_reset_board(struct board_t *brd)
-{
-	u8 check;
-	u32 check1;
-	u32 check2;
-	unsigned int i;
-
-	if (!brd || (brd->magic != DGAP_BOARD_MAGIC) ||
-	    !brd->re_map_membase || !brd->re_map_port)
-		return;
-
-	/* FEPRST does not vary among supported boards */
-	writeb(FEPRST, brd->re_map_port);
-
-	for (i = 0; i <= 1000; i++) {
-		check = readb(brd->re_map_port) & 0xe;
-		if (check == FEPRST)
-			break;
-		udelay(10);
-	}
-	if (i > 1000) {
-		dev_warn(&brd->pdev->dev,
-			 "dgap: Board not resetting...  Failing board.\n");
-		brd->state = BOARD_FAILED;
-		brd->dpastatus = BD_NOFEP;
-		return;
-	}
-
-	/*
-	 * Make sure there really is memory out there.
-	 */
-	writel(0xa55a3cc3, (brd->re_map_membase + LOWMEM));
-	writel(0x5aa5c33c, (brd->re_map_membase + HIGHMEM));
-	check1 = readl(brd->re_map_membase + LOWMEM);
-	check2 = readl(brd->re_map_membase + HIGHMEM);
-
-	if ((check1 != 0xa55a3cc3) || (check2 != 0x5aa5c33c)) {
-		dev_warn(&brd->pdev->dev,
-			 "No memory at %p for board.\n",
-			 brd->re_map_membase);
-		brd->state = BOARD_FAILED;
-		brd->dpastatus = BD_NOFEP;
-		return;
-	}
-}
-
-#ifdef DIGI_CONCENTRATORS_SUPPORTED
-/*
- * Sends a concentrator image into the FEP5 board.
- */
-static void dgap_do_conc_load(struct board_t *brd, u8 *uaddr, int len)
-{
-	char __iomem *vaddr;
-	u16 offset;
-	struct downld_t *to_dp;
-
-	if (!brd || (brd->magic != DGAP_BOARD_MAGIC) || !brd->re_map_membase)
-		return;
-
-	vaddr = brd->re_map_membase;
-
-	offset = readw((u16 *)(vaddr + DOWNREQ));
-	to_dp = (struct downld_t *)(vaddr + (int)offset);
-	memcpy_toio(to_dp, uaddr, len);
-
-	/* Tell card we have data for it */
-	writew(0, vaddr + (DOWNREQ));
-
-	brd->conc_dl_status = NO_PENDING_CONCENTRATOR_REQUESTS;
-}
-#endif
-
-#define EXPANSION_ROM_SIZE	(64 * 1024)
-#define FEP5_ROM_MAGIC		(0xFEFFFFFF)
-
-static void dgap_get_vpd(struct board_t *brd)
-{
-	u32 magic;
-	u32 base_offset;
-	u16 rom_offset;
-	u16 vpd_offset;
-	u16 image_length;
-	u16 i;
-	u8 byte1;
-	u8 byte2;
-
-	/*
-	 * Poke the magic number at the PCI Rom Address location.
-	 * If VPD is supported, the value read from that address
-	 * will be non-zero.
-	 */
-	magic = FEP5_ROM_MAGIC;
-	pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
-	pci_read_config_dword(brd->pdev, PCI_ROM_ADDRESS, &magic);
-
-	/* VPD not supported, bail */
-	if (!magic)
-		return;
-
-	/*
-	 * To get to the OTPROM memory, we have to send the boards base
-	 * address or'ed with 1 into the PCI Rom Address location.
-	 */
-	magic = brd->membase | 0x01;
-	pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
-	pci_read_config_dword(brd->pdev, PCI_ROM_ADDRESS, &magic);
-
-	byte1 = readb(brd->re_map_membase);
-	byte2 = readb(brd->re_map_membase + 1);
-
-	/*
-	 * If the board correctly swapped to the OTPROM memory,
-	 * the first 2 bytes (header) should be 0x55, 0xAA
-	 */
-	if (byte1 == 0x55 && byte2 == 0xAA) {
-		base_offset = 0;
-
-		/*
-		 * We have to run through all the OTPROM memory looking
-		 * for the VPD offset.
-		 */
-		while (base_offset <= EXPANSION_ROM_SIZE) {
-			/*
-			 * Lots of magic numbers here.
-			 *
-			 * The VPD offset is located inside the ROM Data
-			 * Structure.
-			 *
-			 * We also have to remember the length of each
-			 * ROM Data Structure, so we can "hop" to the next
-			 * entry if the VPD isn't in the current
-			 * ROM Data Structure.
-			 */
-			rom_offset = readw(brd->re_map_membase +
-						base_offset + 0x18);
-			image_length = readw(brd->re_map_membase +
-						rom_offset + 0x10) * 512;
-			vpd_offset = readw(brd->re_map_membase +
-						rom_offset + 0x08);
-
-			/* Found the VPD entry */
-			if (vpd_offset)
-				break;
-
-			/* We didn't find a VPD entry, go to next ROM entry. */
-			base_offset += image_length;
-
-			byte1 = readb(brd->re_map_membase + base_offset);
-			byte2 = readb(brd->re_map_membase + base_offset + 1);
-
-			/*
-			 * If the new ROM offset doesn't have 0x55, 0xAA
-			 * as its header, we have run out of ROM.
-			 */
-			if (byte1 != 0x55 || byte2 != 0xAA)
-				break;
-		}
-
-		/*
-		 * If we have a VPD offset, then mark the board
-		 * as having a valid VPD, and copy VPDSIZE (512) bytes of
-		 * that VPD to the buffer we have in our board structure.
-		 */
-		if (vpd_offset) {
-			brd->bd_flags |= BD_HAS_VPD;
-			for (i = 0; i < VPDSIZE; i++) {
-				brd->vpd[i] = readb(brd->re_map_membase +
-							vpd_offset + i);
-			}
-		}
-	}
-
-	/*
-	 * We MUST poke the magic number at the PCI Rom Address location again.
-	 * This makes the card report the regular board memory back to us,
-	 * rather than the OTPROM memory.
-	 */
-	magic = FEP5_ROM_MAGIC;
-	pci_write_config_dword(brd->pdev, PCI_ROM_ADDRESS, magic);
-}
-
-
-static ssize_t dgap_driver_version_show(struct device_driver *ddp, char *buf)
-{
-	return snprintf(buf, PAGE_SIZE, "%s\n", DG_PART);
-}
-static DRIVER_ATTR(version, S_IRUSR, dgap_driver_version_show, NULL);
-
-
-static ssize_t dgap_driver_boards_show(struct device_driver *ddp, char *buf)
-{
-	return snprintf(buf, PAGE_SIZE, "%d\n", dgap_numboards);
-}
-static DRIVER_ATTR(boards, S_IRUSR, dgap_driver_boards_show, NULL);
-
-
-static ssize_t dgap_driver_maxboards_show(struct device_driver *ddp, char *buf)
-{
-	return snprintf(buf, PAGE_SIZE, "%d\n", MAXBOARDS);
-}
-static DRIVER_ATTR(maxboards, S_IRUSR, dgap_driver_maxboards_show, NULL);
-
-
-static ssize_t dgap_driver_pollcounter_show(struct device_driver *ddp,
-					    char *buf)
-{
-	return snprintf(buf, PAGE_SIZE, "%ld\n", dgap_poll_counter);
-}
-static DRIVER_ATTR(pollcounter, S_IRUSR, dgap_driver_pollcounter_show, NULL);
-
-static ssize_t dgap_driver_pollrate_show(struct device_driver *ddp, char *buf)
-{
-	return snprintf(buf, PAGE_SIZE, "%dms\n", dgap_poll_tick);
-}
-
-static ssize_t dgap_driver_pollrate_store(struct device_driver *ddp,
-					  const char *buf, size_t count)
-{
-	if (sscanf(buf, "%d\n", &dgap_poll_tick) != 1)
-		return -EINVAL;
-	return count;
-}
-static DRIVER_ATTR(pollrate, (S_IRUSR | S_IWUSR), dgap_driver_pollrate_show,
-		   dgap_driver_pollrate_store);
-
-
-static int dgap_create_driver_sysfiles(struct pci_driver *dgap_driver)
-{
-	int rc = 0;
-	struct device_driver *driverfs = &dgap_driver->driver;
-
-	rc |= driver_create_file(driverfs, &driver_attr_version);
-	rc |= driver_create_file(driverfs, &driver_attr_boards);
-	rc |= driver_create_file(driverfs, &driver_attr_maxboards);
-	rc |= driver_create_file(driverfs, &driver_attr_pollrate);
-	rc |= driver_create_file(driverfs, &driver_attr_pollcounter);
-
-	return rc;
-}
-
-static void dgap_remove_driver_sysfiles(struct pci_driver *dgap_driver)
-{
-	struct device_driver *driverfs = &dgap_driver->driver;
-
-	driver_remove_file(driverfs, &driver_attr_version);
-	driver_remove_file(driverfs, &driver_attr_boards);
-	driver_remove_file(driverfs, &driver_attr_maxboards);
-	driver_remove_file(driverfs, &driver_attr_pollrate);
-	driver_remove_file(driverfs, &driver_attr_pollcounter);
-}
-
-static struct attribute_group dgap_tty_attribute_group = {
-	.name = NULL,
-	.attrs = dgap_sysfs_tty_entries,
-};
-
-static void dgap_create_tty_sysfs(struct un_t *un, struct device *c)
-{
-	int ret;
-
-	ret = sysfs_create_group(&c->kobj, &dgap_tty_attribute_group);
-	if (ret)
-		return;
-
-	dev_set_drvdata(c, un);
-}
-
-static void dgap_remove_tty_sysfs(struct device *c)
-{
-	sysfs_remove_group(&c->kobj, &dgap_tty_attribute_group);
-}
-
-/*
- * Create pr and tty device entries
- */
-static int dgap_tty_register_ports(struct board_t *brd)
-{
-	struct channel_t *ch;
-	int i;
-	int ret;
-
-	brd->serial_ports = kcalloc(brd->nasync, sizeof(*brd->serial_ports),
-					GFP_KERNEL);
-	if (!brd->serial_ports)
-		return -ENOMEM;
-
-	brd->printer_ports = kcalloc(brd->nasync, sizeof(*brd->printer_ports),
-					GFP_KERNEL);
-	if (!brd->printer_ports) {
-		ret = -ENOMEM;
-		goto free_serial_ports;
-	}
-
-	for (i = 0; i < brd->nasync; i++) {
-		tty_port_init(&brd->serial_ports[i]);
-		tty_port_init(&brd->printer_ports[i]);
-	}
-
-	ch = brd->channels[0];
-	for (i = 0; i < brd->nasync; i++, ch = brd->channels[i]) {
-		struct device *classp;
-
-		classp = tty_port_register_device(&brd->serial_ports[i],
-						  brd->serial_driver,
-						  i, NULL);
-
-		if (IS_ERR(classp)) {
-			ret = PTR_ERR(classp);
-			goto unregister_ttys;
-		}
-
-		dgap_create_tty_sysfs(&ch->ch_tun, classp);
-		ch->ch_tun.un_sysfs = classp;
-
-		classp = tty_port_register_device(&brd->printer_ports[i],
-						  brd->print_driver,
-						  i, NULL);
-
-		if (IS_ERR(classp)) {
-			ret = PTR_ERR(classp);
-			goto unregister_ttys;
-		}
-
-		dgap_create_tty_sysfs(&ch->ch_pun, classp);
-		ch->ch_pun.un_sysfs = classp;
-	}
-	dgap_create_ports_sysfiles(brd);
-
-	return 0;
-
-unregister_ttys:
-	while (i >= 0) {
-		ch = brd->channels[i];
-		if (ch->ch_tun.un_sysfs) {
-			dgap_remove_tty_sysfs(ch->ch_tun.un_sysfs);
-			tty_unregister_device(brd->serial_driver, i);
-		}
-
-		if (ch->ch_pun.un_sysfs) {
-			dgap_remove_tty_sysfs(ch->ch_pun.un_sysfs);
-			tty_unregister_device(brd->print_driver, i);
-		}
-		i--;
-	}
-
-	for (i = 0; i < brd->nasync; i++) {
-		tty_port_destroy(&brd->serial_ports[i]);
-		tty_port_destroy(&brd->printer_ports[i]);
-	}
-
-	kfree(brd->printer_ports);
-	brd->printer_ports = NULL;
-
-free_serial_ports:
-	kfree(brd->serial_ports);
-	brd->serial_ports = NULL;
-
-	return ret;
-}
-
-/*
- * dgap_cleanup_tty()
- *
- * Uninitialize the TTY portion of this driver.  Free all memory and
- * resources.
- */
-static void dgap_cleanup_tty(struct board_t *brd)
-{
-	struct device *dev;
-	unsigned int i;
-
-	for (i = 0; i < brd->nasync; i++) {
-		tty_port_destroy(&brd->serial_ports[i]);
-		dev = brd->channels[i]->ch_tun.un_sysfs;
-		dgap_remove_tty_sysfs(dev);
-		tty_unregister_device(brd->serial_driver, i);
-	}
-	tty_unregister_driver(brd->serial_driver);
-	put_tty_driver(brd->serial_driver);
-	kfree(brd->serial_ports);
-
-	for (i = 0; i < brd->nasync; i++) {
-		tty_port_destroy(&brd->printer_ports[i]);
-		dev = brd->channels[i]->ch_pun.un_sysfs;
-		dgap_remove_tty_sysfs(dev);
-		tty_unregister_device(brd->print_driver, i);
-	}
-	tty_unregister_driver(brd->print_driver);
-	put_tty_driver(brd->print_driver);
-	kfree(brd->printer_ports);
-}
-
-static int dgap_request_irq(struct board_t *brd)
-{
-	int rc;
-
-	if (!brd || brd->magic != DGAP_BOARD_MAGIC)
-		return -ENODEV;
-
-	/*
-	 * Set up our interrupt handler if we are set to do interrupts.
-	 */
-	if (dgap_config_get_useintr(brd) && brd->irq) {
-		rc = request_irq(brd->irq, dgap_intr, IRQF_SHARED, "DGAP", brd);
-
-		if (!rc)
-			brd->intr_used = 1;
-	}
-	return 0;
-}
-
-static void dgap_free_irq(struct board_t *brd)
-{
-	if (brd->intr_used && brd->irq)
-		free_irq(brd->irq, brd);
-}
-
-static int dgap_firmware_load(struct pci_dev *pdev, int card_type,
-			      struct board_t *brd)
-{
-	const struct firmware *fw;
-	char *tmp_ptr;
-	int ret;
-	char *dgap_config_buf;
-
-	dgap_get_vpd(brd);
-	dgap_do_reset_board(brd);
-
-	if (fw_info[card_type].conf_name) {
-		ret = request_firmware(&fw, fw_info[card_type].conf_name,
-				       &pdev->dev);
-		if (ret) {
-			dev_err(&pdev->dev, "config file %s not found\n",
-				fw_info[card_type].conf_name);
-			return ret;
-		}
-
-		dgap_config_buf = kzalloc(fw->size + 1, GFP_KERNEL);
-		if (!dgap_config_buf) {
-			release_firmware(fw);
-			return -ENOMEM;
-		}
-
-		memcpy(dgap_config_buf, fw->data, fw->size);
-		release_firmware(fw);
-
-		/*
-		 * preserve dgap_config_buf
-		 * as dgap_parsefile would
-		 * otherwise alter it.
-		 */
-		tmp_ptr = dgap_config_buf;
-
-		if (dgap_parsefile(&tmp_ptr) != 0) {
-			kfree(dgap_config_buf);
-			return -EINVAL;
-		}
-		kfree(dgap_config_buf);
-	}
-
-	/*
-	 * Match this board to a config the user created for us.
-	 */
-	brd->bd_config =
-		dgap_find_config(brd->type, brd->pci_bus, brd->pci_slot);
-
-	/*
-	 * Because the 4 port Xr products share the same PCI ID
-	 * as the 8 port Xr products, if we receive a NULL config
-	 * back, and this is a PAPORT8 board, retry with a
-	 * PAPORT4 attempt as well.
-	 */
-	if (brd->type == PAPORT8 && !brd->bd_config)
-		brd->bd_config =
-			dgap_find_config(PAPORT4, brd->pci_bus, brd->pci_slot);
-
-	if (!brd->bd_config) {
-		dev_err(&pdev->dev, "No valid configuration found\n");
-		return -EINVAL;
-	}
-
-	if (fw_info[card_type].bios_name) {
-		ret = request_firmware(&fw, fw_info[card_type].bios_name,
-				       &pdev->dev);
-		if (ret) {
-			dev_err(&pdev->dev, "bios file %s not found\n",
-				fw_info[card_type].bios_name);
-			return ret;
-		}
-		dgap_do_bios_load(brd, fw->data, fw->size);
-		release_firmware(fw);
-
-		/* Wait for BIOS to test board... */
-		ret = dgap_test_bios(brd);
-		if (ret)
-			return ret;
-	}
-
-	if (fw_info[card_type].fep_name) {
-		ret = request_firmware(&fw, fw_info[card_type].fep_name,
-				       &pdev->dev);
-		if (ret) {
-			dev_err(&pdev->dev, "dgap: fep file %s not found\n",
-				fw_info[card_type].fep_name);
-			return ret;
-		}
-		dgap_do_fep_load(brd, fw->data, fw->size);
-		release_firmware(fw);
-
-		/* Wait for FEP to load on board... */
-		ret = dgap_test_fep(brd);
-		if (ret)
-			return ret;
-	}
-
-#ifdef DIGI_CONCENTRATORS_SUPPORTED
-	/*
-	 * If this is a CX or EPCX, we need to see if the firmware
-	 * is requesting a concentrator image from us.
-	 */
-	if ((bd->type == PCX) || (bd->type == PEPC)) {
-		chk_addr = (u16 *)(vaddr + DOWNREQ);
-		/* Nonzero if FEP is requesting concentrator image. */
-		check = readw(chk_addr);
-		vaddr = brd->re_map_membase;
-	}
-
-	if (fw_info[card_type].con_name && check && vaddr) {
-		ret = request_firmware(&fw, fw_info[card_type].con_name,
-				       &pdev->dev);
-		if (ret) {
-			dev_err(&pdev->dev, "conc file %s not found\n",
-				fw_info[card_type].con_name);
-			return ret;
-		}
-		/* Put concentrator firmware loading code here */
-		offset = readw((u16 *)(vaddr + DOWNREQ));
-		memcpy_toio(offset, fw->data, fw->size);
-
-		dgap_do_conc_load(brd, (char *)fw->data, fw->size)
-		release_firmware(fw);
-	}
-#endif
-
-	return 0;
-}
-
-/*
- * dgap_tty_init()
- *
- * Init the tty subsystem.  Called once per board after board has been
- * downloaded and init'ed.
- */
-static int dgap_tty_init(struct board_t *brd)
-{
-	int i;
-	int tlw;
-	uint true_count;
-	u8 __iomem *vaddr;
-	u8 modem;
-	struct channel_t *ch;
-	struct bs_t __iomem *bs;
-	struct cm_t __iomem *cm;
-	int ret;
-
-	/*
-	 * Initialize board structure elements.
-	 */
-
-	vaddr = brd->re_map_membase;
-	true_count = readw((vaddr + NCHAN));
-
-	brd->nasync = dgap_config_get_num_prts(brd);
-
-	if (!brd->nasync)
-		brd->nasync = brd->maxports;
-
-	if (brd->nasync > brd->maxports)
-		brd->nasync = brd->maxports;
-
-	if (true_count != brd->nasync) {
-		dev_warn(&brd->pdev->dev,
-			 "%s configured for %d ports, has %d ports.\n",
-			 brd->name, brd->nasync, true_count);
-
-		if ((brd->type == PPCM) &&
-		    (true_count == 64 || true_count == 0)) {
-			dev_warn(&brd->pdev->dev,
-				 "Please make SURE the EBI cable running from the card\n");
-			dev_warn(&brd->pdev->dev,
-				 "to each EM module is plugged into EBI IN!\n");
-		}
-
-		brd->nasync = true_count;
-
-		/* If no ports, don't bother going any further */
-		if (!brd->nasync) {
-			brd->state = BOARD_FAILED;
-			brd->dpastatus = BD_NOFEP;
-			return -EIO;
-		}
-	}
-
-	/*
-	 * Allocate channel memory that might not have been allocated
-	 * when the driver was first loaded.
-	 */
-	for (i = 0; i < brd->nasync; i++) {
-		brd->channels[i] =
-			kzalloc(sizeof(struct channel_t), GFP_KERNEL);
-		if (!brd->channels[i]) {
-			ret = -ENOMEM;
-			goto free_chan;
-		}
-	}
-
-	ch = brd->channels[0];
-	vaddr = brd->re_map_membase;
-
-	bs = (struct bs_t __iomem *)((ulong)vaddr + CHANBUF);
-	cm = (struct cm_t __iomem *)((ulong)vaddr + CMDBUF);
-
-	brd->bd_bs = bs;
-
-	/* Set up channel variables */
-	for (i = 0; i < brd->nasync; i++, ch = brd->channels[i], bs++) {
-		spin_lock_init(&ch->ch_lock);
-
-		/* Store all our magic numbers */
-		ch->magic = DGAP_CHANNEL_MAGIC;
-		ch->ch_tun.magic = DGAP_UNIT_MAGIC;
-		ch->ch_tun.un_type = DGAP_SERIAL;
-		ch->ch_tun.un_ch = ch;
-		ch->ch_tun.un_dev = i;
-
-		ch->ch_pun.magic = DGAP_UNIT_MAGIC;
-		ch->ch_pun.un_type = DGAP_PRINT;
-		ch->ch_pun.un_ch = ch;
-		ch->ch_pun.un_dev = i;
-
-		ch->ch_vaddr = vaddr;
-		ch->ch_bs = bs;
-		ch->ch_cm = cm;
-		ch->ch_bd = brd;
-		ch->ch_portnum = i;
-		ch->ch_digi = dgap_digi_init;
-
-		/*
-		 * Set up digi dsr and dcd bits based on altpin flag.
-		 */
-		if (dgap_config_get_altpin(brd)) {
-			ch->ch_dsr	= DM_CD;
-			ch->ch_cd	= DM_DSR;
-			ch->ch_digi.digi_flags |= DIGI_ALTPIN;
-		} else {
-			ch->ch_cd	= DM_CD;
-			ch->ch_dsr	= DM_DSR;
-		}
-
-		ch->ch_taddr = vaddr + (ioread16(&ch->ch_bs->tx_seg) << 4);
-		ch->ch_raddr = vaddr + (ioread16(&ch->ch_bs->rx_seg) << 4);
-		ch->ch_tx_win = 0;
-		ch->ch_rx_win = 0;
-		ch->ch_tsize = readw(&ch->ch_bs->tx_max) + 1;
-		ch->ch_rsize = readw(&ch->ch_bs->rx_max) + 1;
-		ch->ch_tstart = 0;
-		ch->ch_rstart = 0;
-
-		/*
-		 * Set queue water marks, interrupt mask,
-		 * and general tty parameters.
-		 */
-		tlw = ch->ch_tsize >= 2000 ? ((ch->ch_tsize * 5) / 8) :
-						ch->ch_tsize / 2;
-		ch->ch_tlw = tlw;
-
-		dgap_cmdw(ch, STLOW, tlw, 0);
-
-		dgap_cmdw(ch, SRLOW, ch->ch_rsize / 2, 0);
-
-		dgap_cmdw(ch, SRHIGH, 7 * ch->ch_rsize / 8, 0);
-
-		ch->ch_mistat = readb(&ch->ch_bs->m_stat);
-
-		init_waitqueue_head(&ch->ch_flags_wait);
-		init_waitqueue_head(&ch->ch_tun.un_flags_wait);
-		init_waitqueue_head(&ch->ch_pun.un_flags_wait);
-
-		/* Turn on all modem interrupts for now */
-		modem = (DM_CD | DM_DSR | DM_CTS | DM_RI);
-		writeb(modem, &ch->ch_bs->m_int);
-
-		/*
-		 * Set edelay to 0 if interrupts are turned on,
-		 * otherwise set edelay to the usual 100.
-		 */
-		if (brd->intr_used)
-			writew(0, &ch->ch_bs->edelay);
-		else
-			writew(100, &ch->ch_bs->edelay);
-
-		writeb(1, &ch->ch_bs->idata);
-	}
-
-	return 0;
-
-free_chan:
-	while (--i >= 0) {
-		kfree(brd->channels[i]);
-		brd->channels[i] = NULL;
-	}
-	return ret;
-}
-
-/*
- * dgap_tty_free()
- *
- * Free the channles which are allocated in dgap_tty_init().
- */
-static void dgap_tty_free(struct board_t *brd)
-{
-	int i;
-
-	for (i = 0; i < brd->nasync; i++)
-		kfree(brd->channels[i]);
-}
-
-static int dgap_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
-{
-	int rc;
-	struct board_t *brd;
-
-	if (dgap_numboards >= MAXBOARDS)
-		return -EPERM;
-
-	rc = pci_enable_device(pdev);
-	if (rc)
-		return -EIO;
-
-	brd = dgap_found_board(pdev, ent->driver_data, dgap_numboards);
-	if (IS_ERR(brd))
-		return PTR_ERR(brd);
-
-	rc = dgap_firmware_load(pdev, ent->driver_data, brd);
-	if (rc)
-		goto cleanup_brd;
-
-	rc = dgap_alloc_flipbuf(brd);
-	if (rc)
-		goto cleanup_brd;
-
-	rc = dgap_tty_register(brd);
-	if (rc)
-		goto free_flipbuf;
-
-	rc = dgap_request_irq(brd);
-	if (rc)
-		goto unregister_tty;
-
-	/*
-	 * Do tty device initialization.
-	 */
-	rc = dgap_tty_init(brd);
-	if (rc < 0)
-		goto free_irq;
-
-	rc = dgap_tty_register_ports(brd);
-	if (rc)
-		goto tty_free;
-
-	brd->state = BOARD_READY;
-	brd->dpastatus = BD_RUNNING;
-
-	dgap_board[dgap_numboards++] = brd;
-
-	return 0;
-
-tty_free:
-	dgap_tty_free(brd);
-free_irq:
-	dgap_free_irq(brd);
-unregister_tty:
-	dgap_tty_unregister(brd);
-free_flipbuf:
-	dgap_free_flipbuf(brd);
-cleanup_brd:
-	dgap_cleanup_nodes();
-	dgap_unmap(brd);
-	kfree(brd);
-
-	return rc;
-}
-
-/*
- * dgap_cleanup_board()
- *
- * Free all the memory associated with a board
- */
-static void dgap_cleanup_board(struct board_t *brd)
-{
-	unsigned int i;
-
-	if (!brd || brd->magic != DGAP_BOARD_MAGIC)
-		return;
-
-	dgap_free_irq(brd);
-
-	tasklet_kill(&brd->helper_tasklet);
-
-	dgap_unmap(brd);
-
-	/* Free all allocated channels structs */
-	for (i = 0; i < MAXPORTS ; i++)
-		kfree(brd->channels[i]);
-
-	kfree(brd->flipbuf);
-	kfree(brd->flipflagbuf);
-
-	dgap_board[brd->boardnum] = NULL;
-
-	kfree(brd);
-}
-
-static void dgap_stop(bool removesys, struct pci_driver *drv)
-{
-	unsigned long lock_flags;
-
-	spin_lock_irqsave(&dgap_poll_lock, lock_flags);
-	dgap_poll_stop = 1;
-	spin_unlock_irqrestore(&dgap_poll_lock, lock_flags);
-
-	del_timer_sync(&dgap_poll_timer);
-	if (removesys)
-		dgap_remove_driver_sysfiles(drv);
-
-	device_destroy(dgap_class, MKDEV(DIGI_DGAP_MAJOR, 0));
-	class_destroy(dgap_class);
-	unregister_chrdev(DIGI_DGAP_MAJOR, "dgap");
-}
-
-static void dgap_remove_one(struct pci_dev *dev)
-{
-	unsigned int i;
-	struct pci_driver *drv = to_pci_driver(dev->dev.driver);
-
-	dgap_stop(true, drv);
-	for (i = 0; i < dgap_numboards; ++i) {
-		dgap_remove_ports_sysfiles(dgap_board[i]);
-		dgap_cleanup_tty(dgap_board[i]);
-		dgap_cleanup_board(dgap_board[i]);
-	}
-
-	dgap_cleanup_nodes();
-}
-
-static struct pci_driver dgap_driver = {
-	.name		= "dgap",
-	.probe		= dgap_init_one,
-	.id_table	= dgap_pci_tbl,
-	.remove		= dgap_remove_one,
-};
-
-/*
- * Start of driver.
- */
-static int dgap_start(void)
-{
-	int rc;
-	unsigned long flags;
-	struct device *device;
-
-	dgap_numboards = 0;
-
-	pr_info("For the tools package please visit http://www.digi.com\n");
-
-	/*
-	 * Register our base character device into the kernel.
-	 */
-
-	/*
-	 * Register management/dpa devices
-	 */
-	rc = register_chrdev(DIGI_DGAP_MAJOR, "dgap", &dgap_board_fops);
-	if (rc < 0)
-		return rc;
-
-	dgap_class = class_create(THIS_MODULE, "dgap_mgmt");
-	if (IS_ERR(dgap_class)) {
-		rc = PTR_ERR(dgap_class);
-		goto failed_class;
-	}
-
-	device = device_create(dgap_class, NULL,
-			       MKDEV(DIGI_DGAP_MAJOR, 0),
-			       NULL, "dgap_mgmt");
-	if (IS_ERR(device)) {
-		rc = PTR_ERR(device);
-		goto failed_device;
-	}
-
-	/* Start the poller */
-	spin_lock_irqsave(&dgap_poll_lock, flags);
-	setup_timer(&dgap_poll_timer, dgap_poll_handler, 0);
-	dgap_poll_timer.data = 0;
-	dgap_poll_time = jiffies + dgap_jiffies_from_ms(dgap_poll_tick);
-	dgap_poll_timer.expires = dgap_poll_time;
-	spin_unlock_irqrestore(&dgap_poll_lock, flags);
-
-	add_timer(&dgap_poll_timer);
-
-	return rc;
-
-failed_device:
-	class_destroy(dgap_class);
-failed_class:
-	unregister_chrdev(DIGI_DGAP_MAJOR, "dgap");
-	return rc;
-}
-
-/************************************************************************
- *
- * Driver load/unload functions
- *
- ************************************************************************/
-
-/*
- * init_module()
- *
- * Module load.  This is where it all starts.
- */
-static int dgap_init_module(void)
-{
-	int rc;
-
-	pr_info("%s, Digi International Part Number %s\n", DG_NAME, DG_PART);
-
-	rc = dgap_start();
-	if (rc)
-		return rc;
-
-	rc = pci_register_driver(&dgap_driver);
-	if (rc) {
-		dgap_stop(false, NULL);
-		return rc;
-	}
-
-	rc = dgap_create_driver_sysfiles(&dgap_driver);
-	if (rc)
-		goto err_unregister;
-
-	dgap_driver_state = DRIVER_READY;
-
-	return 0;
-
-err_unregister:
-	pci_unregister_driver(&dgap_driver);
-	return rc;
-}
-
-/*
- * dgap_cleanup_module()
- *
- * Module unload.  This is where it all ends.
- */
-static void dgap_cleanup_module(void)
-{
-	if (dgap_numboards)
-		pci_unregister_driver(&dgap_driver);
-}
-
-module_init(dgap_init_module);
-module_exit(dgap_cleanup_module);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Digi International, http://www.digi.com");
-MODULE_DESCRIPTION("Driver for the Digi International EPCA PCI based product line");
-MODULE_SUPPORTED_DEVICE("dgap");

drivers/staging/dgap/dgap.h

@@ -1,1229 +0,0 @@
-/*
- * Copyright 2003 Digi International (www.digi.com)
- *      Scott H Kilau <Scott_Kilau at digi dot com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED; without even the
- * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
- * PURPOSE.  See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- *	NOTE: THIS IS A SHARED HEADER. DO NOT CHANGE CODING STYLE!!!
- *
- *************************************************************************
- *
- * Driver includes
- *
- *************************************************************************/
-
-#ifndef __DGAP_DRIVER_H
-#define __DGAP_DRIVER_H
-
-#include <linux/types.h>        /* To pick up the varions Linux types */
-#include <linux/tty.h>          /* To pick up the various tty structs/defines */
-#include <linux/interrupt.h>    /* For irqreturn_t type */
-
-#ifndef TRUE
-# define TRUE 1
-#endif
-
-#ifndef FALSE
-# define FALSE 0
-#endif
-
-#if !defined(TTY_FLIPBUF_SIZE)
-# define TTY_FLIPBUF_SIZE 512
-#endif
-
-/*************************************************************************
- *
- * Driver defines
- *
- *************************************************************************/
-
-/*
- * Driver identification
- */
-#define	DG_NAME		"dgap-1.3-16"
-#define	DG_PART		"40002347_C"
-#define	DRVSTR		"dgap"
-
-/*
- * defines from dgap_pci.h
- */
-#define PCIMAX 32			/* maximum number of PCI boards */
-
-#define DIGI_VID		0x114F
-
-#define PCI_DEV_EPC_DID		0x0002
-#define PCI_DEV_XEM_DID		0x0004
-#define PCI_DEV_XR_DID		0x0005
-#define PCI_DEV_CX_DID		0x0006
-#define PCI_DEV_XRJ_DID		0x0009	/* PLX-based Xr adapter */
-#define PCI_DEV_XR_IBM_DID	0x0011	/* IBM 8-port Async Adapter */
-#define PCI_DEV_XR_BULL_DID	0x0013	/* BULL 8-port Async Adapter */
-#define PCI_DEV_XR_SAIP_DID	0x001c	/* SAIP card - Xr adapter */
-#define PCI_DEV_XR_422_DID	0x0012	/* Xr-422 */
-#define PCI_DEV_920_2_DID	0x0034	/* XR-Plus 920 K, 2 port */
-#define PCI_DEV_920_4_DID	0x0026	/* XR-Plus 920 K, 4 port */
-#define PCI_DEV_920_8_DID	0x0027	/* XR-Plus 920 K, 8 port */
-#define PCI_DEV_EPCJ_DID	0x000a	/* PLX 9060 chip for PCI  */
-#define PCI_DEV_CX_IBM_DID	0x001b	/* IBM 128-port Async Adapter */
-#define PCI_DEV_920_8_HP_DID	0x0058	/* HP XR-Plus 920 K, 8 port */
-#define PCI_DEV_XEM_HP_DID	0x0059  /* HP Xem PCI */
-
-#define PCI_DEV_XEM_NAME	"AccelePort XEM"
-#define PCI_DEV_CX_NAME		"AccelePort CX"
-#define PCI_DEV_XR_NAME		"AccelePort Xr"
-#define PCI_DEV_XRJ_NAME	"AccelePort Xr (PLX)"
-#define PCI_DEV_XR_SAIP_NAME	"AccelePort Xr (SAIP)"
-#define PCI_DEV_920_2_NAME	"AccelePort Xr920 2 port"
-#define PCI_DEV_920_4_NAME	"AccelePort Xr920 4 port"
-#define PCI_DEV_920_8_NAME	"AccelePort Xr920 8 port"
-#define PCI_DEV_XR_422_NAME	"AccelePort Xr 422"
-#define PCI_DEV_EPCJ_NAME	"AccelePort EPC (PLX)"
-#define PCI_DEV_XR_BULL_NAME	"AccelePort Xr (BULL)"
-#define PCI_DEV_XR_IBM_NAME	"AccelePort Xr (IBM)"
-#define PCI_DEV_CX_IBM_NAME	"AccelePort CX (IBM)"
-#define PCI_DEV_920_8_HP_NAME	"AccelePort Xr920 8 port (HP)"
-#define PCI_DEV_XEM_HP_NAME	"AccelePort XEM (HP)"
-
-/*
- * On the PCI boards, there is no IO space allocated
- * The I/O registers will be in the first 3 bytes of the
- * upper 2MB of the 4MB memory space.  The board memory
- * will be mapped into the low 2MB of the 4MB memory space
- */
-
-/* Potential location of PCI Bios from E0000 to FFFFF*/
-#define PCI_BIOS_SIZE		0x00020000
-
-/* Size of Memory and I/O for PCI (4MB) */
-#define PCI_RAM_SIZE		0x00400000
-
-/* Size of Memory (2MB) */
-#define PCI_MEM_SIZE		0x00200000
-
-/* Max PCI Window Size (2MB) */
-#define PCI_WIN_SIZE		0x00200000
-
-#define PCI_WIN_SHIFT		21 /* 21 bits max */
-
-/* Offset of I/0 in Memory (2MB) */
-#define PCI_IO_OFFSET		0x00200000
-
-/* Size of IO (2MB) */
-#define PCI_IO_SIZE_DGAP	0x00200000
-
-/* Number of boards we support at once. */
-#define	MAXBOARDS	32
-#define	MAXPORTS	224
-#define MAXTTYNAMELEN	200
-
-/* Our 3 magic numbers for our board, channel and unit structs */
-#define DGAP_BOARD_MAGIC	0x5c6df104
-#define DGAP_CHANNEL_MAGIC	0x6c6df104
-#define DGAP_UNIT_MAGIC		0x7c6df104
-
-/* Serial port types */
-#define DGAP_SERIAL		0
-#define DGAP_PRINT		1
-
-#define	SERIAL_TYPE_NORMAL	1
-
-/* 4 extra for alignment play space */
-#define WRITEBUFLEN		((4096) + 4)
-#define MYFLIPLEN		N_TTY_BUF_SIZE
-
-#define SBREAK_TIME 0x25
-#define U2BSIZE 0x400
-
-#define dgap_jiffies_from_ms(a) (((a) * HZ) / 1000)
-
-/*
- * Our major for the mgmt devices.
- *
- * We can use 22, because Digi was allocated 22 and 23 for the epca driver.
- * 22 has now become obsolete now that the "cu" devices have
- * been removed from 2.6.
- * Also, this *IS* the epca driver, just PCI only now.
- */
-#ifndef DIGI_DGAP_MAJOR
-# define DIGI_DGAP_MAJOR         22
-#endif
-
-/*
- * The parameters we use to define the periods of the moving averages.
- */
-#define		MA_PERIOD	(HZ / 10)
-#define		SMA_DUR		(1 * HZ)
-#define		EMA_DUR		(1 * HZ)
-#define		SMA_NPERIODS	(SMA_DUR / MA_PERIOD)
-#define		EMA_NPERIODS	(EMA_DUR / MA_PERIOD)
-
-/*
- * Define a local default termios struct. All ports will be created
- * with this termios initially.  This is the same structure that is defined
- * as the default in tty_io.c with the same settings overridden as in serial.c
- *
- * In short, this should match the internal serial ports' defaults.
- */
-#define	DEFAULT_IFLAGS	(ICRNL | IXON)
-#define	DEFAULT_OFLAGS	(OPOST | ONLCR)
-#define	DEFAULT_CFLAGS	(B9600 | CS8 | CREAD | HUPCL | CLOCAL)
-#define	DEFAULT_LFLAGS	(ISIG | ICANON | ECHO | ECHOE | ECHOK | \
-			ECHOCTL | ECHOKE | IEXTEN)
-
-#ifndef _POSIX_VDISABLE
-#define _POSIX_VDISABLE ('\0')
-#endif
-
-#define SNIFF_MAX	65536		/* Sniff buffer size (2^n) */
-#define SNIFF_MASK	(SNIFF_MAX - 1)	/* Sniff wrap mask */
-
-#define VPDSIZE (512)
-
-/************************************************************************
- *      FEP memory offsets
- ************************************************************************/
-#define START           0x0004L         /* Execution start address      */
-
-#define CMDBUF          0x0d10L         /* Command (cm_t) structure offset */
-#define CMDSTART        0x0400L         /* Start of command buffer      */
-#define CMDMAX          0x0800L         /* End of command buffer        */
-
-#define EVBUF           0x0d18L         /* Event (ev_t) structure       */
-#define EVSTART         0x0800L         /* Start of event buffer        */
-#define EVMAX           0x0c00L         /* End of event buffer          */
-#define FEP5_PLUS       0x0E40          /* ASCII '5' and ASCII 'A' is here  */
-#define ECS_SEG         0x0E44          /* Segment of the extended      */
-					/* channel structure            */
-#define LINE_SPEED      0x10            /* Offset into ECS_SEG for line */
-					/* speed if the fep has extended */
-					/* capabilities                 */
-
-/* BIOS MAGIC SPOTS */
-#define ERROR           0x0C14L		/* BIOS error code              */
-#define SEQUENCE	0x0C12L		/* BIOS sequence indicator      */
-#define POSTAREA	0x0C00L		/* POST complete message area   */
-
-/* FEP MAGIC SPOTS */
-#define FEPSTAT         POSTAREA        /* OS here when FEP comes up    */
-#define NCHAN           0x0C02L         /* number of ports FEP sees     */
-#define PANIC           0x0C10L         /* PANIC area for FEP           */
-#define KMEMEM          0x0C30L         /* Memory for KME use           */
-#define CONFIG          0x0CD0L         /* Concentrator configuration info */
-#define CONFIGSIZE      0x0030          /* configuration info size      */
-#define DOWNREQ         0x0D00          /* Download request buffer pointer */
-
-#define CHANBUF         0x1000L         /* Async channel (bs_t) structs */
-#define FEPOSSIZE       0x1FFF          /* 8K FEPOS                     */
-
-#define XEMPORTS    0xC02	/*
-				 * Offset in board memory where FEP5 stores
-				 * how many ports it has detected.
-				 * NOTE: FEP5 reports 64 ports when the user
-				 * has the cable in EBI OUT instead of EBI IN.
-				 */
-
-#define FEPCLR      0x00
-#define FEPMEM      0x02
-#define FEPRST      0x04
-#define FEPINT      0x08
-#define FEPMASK     0x0e
-#define FEPWIN      0x80
-
-#define LOWMEM      0x0100
-#define HIGHMEM     0x7f00
-
-#define FEPTIMEOUT 200000
-
-#define ENABLE_INTR	0x0e04		/* Enable interrupts flag */
-#define FEPPOLL_MIN	1		/* minimum of 1 millisecond */
-#define FEPPOLL_MAX	20		/* maximum of 20 milliseconds */
-#define FEPPOLL		0x0c26		/* Fep event poll interval */
-
-#define	IALTPIN		0x0080		/* Input flag to swap DSR <-> DCD */
-
-/************************************************************************
- * FEP supported functions
- ************************************************************************/
-#define SRLOW		0xe0		/* Set receive low water	*/
-#define SRHIGH		0xe1		/* Set receive high water	*/
-#define FLUSHTX		0xe2		/* Flush transmit buffer	*/
-#define PAUSETX		0xe3		/* Pause data transmission	*/
-#define RESUMETX	0xe4		/* Resume data transmission	*/
-#define SMINT		0xe5		/* Set Modem Interrupt		*/
-#define SAFLOWC		0xe6		/* Set Aux. flow control chars	*/
-#define SBREAK		0xe8		/* Send break			*/
-#define SMODEM		0xe9		/* Set 8530 modem control lines	*/
-#define SIFLAG		0xea		/* Set UNIX iflags		*/
-#define SFLOWC		0xeb		/* Set flow control characters	*/
-#define STLOW		0xec		/* Set transmit low water mark	*/
-#define RPAUSE		0xee		/* Pause receive		*/
-#define RRESUME		0xef		/* Resume receive		*/
-#define CHRESET		0xf0		/* Reset Channel		*/
-#define BUFSETALL	0xf2		/* Set Tx & Rx buffer size avail*/
-#define SOFLAG		0xf3		/* Set UNIX oflags		*/
-#define SHFLOW		0xf4		/* Set hardware handshake	*/
-#define SCFLAG		0xf5		/* Set UNIX cflags		*/
-#define SVNEXT		0xf6		/* Set VNEXT character		*/
-#define SPINTFC		0xfc		/* Reserved			*/
-#define SCOMMODE	0xfd		/* Set RS232/422 mode		*/
-
-/************************************************************************
- *	Modes for SCOMMODE
- ************************************************************************/
-#define MODE_232	0x00
-#define MODE_422	0x01
-
-/************************************************************************
- *      Event flags.
- ************************************************************************/
-#define IFBREAK         0x01            /* Break received               */
-#define IFTLW           0x02            /* Transmit low water           */
-#define IFTEM           0x04            /* Transmitter empty            */
-#define IFDATA          0x08            /* Receive data present         */
-#define IFMODEM         0x20            /* Modem status change          */
-
-/************************************************************************
- *      Modem flags
- ************************************************************************/
-#       define  DM_RTS          0x02    /* Request to send              */
-#       define  DM_CD           0x80    /* Carrier detect               */
-#       define  DM_DSR          0x20    /* Data set ready               */
-#       define  DM_CTS          0x10    /* Clear to send                */
-#       define  DM_RI           0x40    /* Ring indicator               */
-#       define  DM_DTR          0x01    /* Data terminal ready          */
-
-/*
- * defines from dgap_conf.h
- */
-#define NULLNODE 0		/* header node, not used */
-#define BNODE 1			/* Board node */
-#define LNODE 2			/* Line node */
-#define CNODE 3			/* Concentrator node */
-#define MNODE 4			/* EBI Module node */
-#define TNODE 5			/* tty name prefix node */
-#define	CUNODE 6		/* cu name prefix (non-SCO) */
-#define PNODE 7			/* trans. print prefix node */
-#define JNODE 8			/* maJor number node */
-#define ANODE 9			/* altpin */
-#define	TSNODE 10		/* tty structure size */
-#define CSNODE 11		/* channel structure size */
-#define BSNODE 12		/* board structure size */
-#define USNODE 13		/* unit schedule structure size */
-#define FSNODE 14		/* f2200 structure size */
-#define VSNODE 15		/* size of VPIX structures */
-#define INTRNODE 16		/* enable interrupt */
-
-/* Enumeration of tokens */
-#define	BEGIN	1
-#define	END	2
-#define	BOARD	10
-
-#define EPCFS	11 /* start of EPC family definitions */
-#define	ICX		11
-#define	MCX		13
-#define PCX	14
-#define	IEPC	15
-#define	EEPC	16
-#define	MEPC	17
-#define	IPCM	18
-#define	EPCM	19
-#define	MPCM	20
-#define PEPC	21
-#define PPCM	22
-#ifdef CP
-#define ICP     23
-#define ECP     24
-#define MCP     25
-#endif
-#define EPCFE	25 /* end of EPC family definitions */
-#define	PC2E	26
-#define	PC4E	27
-#define	PC4E8K	28
-#define	PC8E	29
-#define	PC8E8K	30
-#define	PC16E	31
-#define MC2E8K  34
-#define MC4E8K  35
-#define MC8E8K  36
-
-#define AVANFS	42	/* start of Avanstar family definitions */
-#define A8P	42
-#define A16P	43
-#define AVANFE	43	/* end of Avanstar family definitions */
-
-#define DA2000FS	44 /* start of AccelePort 2000 family definitions */
-#define DA22		44 /* AccelePort 2002 */
-#define DA24		45 /* AccelePort 2004 */
-#define DA28		46 /* AccelePort 2008 */
-#define DA216		47 /* AccelePort 2016 */
-#define DAR4		48 /* AccelePort RAS 4 port */
-#define DAR8		49 /* AccelePort RAS 8 port */
-#define DDR24		50 /* DataFire RAS 24 port */
-#define DDR30		51 /* DataFire RAS 30 port */
-#define DDR48		52 /* DataFire RAS 48 port */
-#define DDR60		53 /* DataFire RAS 60 port */
-#define DA2000FE	53 /* end of AccelePort 2000/RAS family definitions */
-
-#define PCXRFS	106	/* start of PCXR family definitions */
-#define	APORT4	106
-#define	APORT8	107
-#define PAPORT4 108
-#define PAPORT8 109
-#define APORT4_920I	110
-#define APORT8_920I	111
-#define APORT4_920P	112
-#define APORT8_920P	113
-#define APORT2_920P 114
-#define PCXRFE	117	/* end of PCXR family definitions */
-
-#define	LINE	82
-#ifdef T1
-#define T1M	83
-#define E1M	84
-#endif
-#define	CONC	64
-#define	CX	65
-#define	EPC	66
-#define	MOD	67
-#define	PORTS	68
-#define METHOD	69
-#define CUSTOM	70
-#define BASIC	71
-#define STATUS	72
-#define MODEM	73
-/* The following tokens can appear in multiple places */
-#define	SPEED	74
-#define	NPORTS	75
-#define	ID	76
-#define CABLE	77
-#define CONNECT	78
-#define	MEM	80
-#define DPSZ	81
-
-#define	TTYN	90
-#define	CU	91
-#define	PRINT	92
-#define	XPRINT	93
-#define CMAJOR   94
-#define ALTPIN  95
-#define STARTO 96
-#define USEINTR  97
-#define PCIINFO  98
-
-#define	TTSIZ	100
-#define	CHSIZ	101
-#define BSSIZ	102
-#define	UNTSIZ	103
-#define	F2SIZ	104
-#define	VPSIZ	105
-
-#define	TOTAL_BOARD	2
-#define	CURRENT_BRD	4
-#define	BOARD_TYPE	6
-#define	IO_ADDRESS	8
-#define	MEM_ADDRESS	10
-
-#define	FIELDS_PER_PAGE	18
-
-#define TB_FIELD	1
-#define CB_FIELD	3
-#define BT_FIELD	5
-#define IO_FIELD	7
-#define ID_FIELD	8
-#define ME_FIELD	9
-#define TTY_FIELD	11
-#define CU_FIELD	13
-#define PR_FIELD	15
-#define MPR_FIELD	17
-
-#define	MAX_FIELD	512
-
-#define	INIT		0
-#define	NITEMS		128
-#define MAX_ITEM	512
-
-#define	DSCRINST	1
-#define	DSCRNUM		3
-#define	ALTPINQ		5
-#define	SSAVE		7
-
-#define	DSCR		"32"
-#define	ONETONINE	"123456789"
-#define	ALL		"1234567890"
-
-/*
- * All the possible states the driver can be while being loaded.
- */
-enum {
-	DRIVER_INITIALIZED = 0,
-	DRIVER_READY
-};
-
-/*
- * All the possible states the board can be while booting up.
- */
-enum {
-	BOARD_FAILED = 0,
-	BOARD_READY
-};
-
-/*
- * All the possible states that a requested concentrator image can be in.
- */
-enum {
-	NO_PENDING_CONCENTRATOR_REQUESTS = 0,
-	NEED_CONCENTRATOR,
-	REQUESTED_CONCENTRATOR
-};
-
-/*
- * Modem line constants are defined as macros because DSR and
- * DCD are swapable using the ditty altpin option.
- */
-#define D_CD(ch)        ch->ch_cd       /* Carrier detect       */
-#define D_DSR(ch)       ch->ch_dsr      /* Data set ready       */
-#define D_RTS(ch)       DM_RTS          /* Request to send      */
-#define D_CTS(ch)       DM_CTS          /* Clear to send        */
-#define D_RI(ch)        DM_RI           /* Ring indicator       */
-#define D_DTR(ch)       DM_DTR          /* Data terminal ready  */
-
-/*************************************************************************
- *
- * Structures and closely related defines.
- *
- *************************************************************************/
-
-/*
- * A structure to hold a statistics counter.  We also
- * compute moving averages for this counter.
- */
-struct macounter {
-	u32		cnt;	/* Total count */
-	ulong		accum;	/* Acuumulator per period */
-	ulong		sma;	/* Simple moving average */
-	ulong		ema;	/* Exponential moving average */
-};
-
-/************************************************************************
- * Device flag definitions for bd_flags.
- ************************************************************************/
-#define	BD_FEP5PLUS	0x0001          /* Supports FEP5 Plus commands */
-#define BD_HAS_VPD	0x0002		/* Board has VPD info available */
-
-/*
- *	Per-board information
- */
-struct board_t {
-	int		magic;		/* Board Magic number.  */
-	int		boardnum;	/* Board number: 0-3 */
-
-	int		type;		/* Type of board */
-	char		*name;		/* Product Name */
-	struct pci_dev	*pdev;		/* Pointer to the pci_dev struct */
-	u16		vendor;		/* PCI vendor ID */
-	u16		device;		/* PCI device ID */
-	u16		subvendor;	/* PCI subsystem vendor ID */
-	u16		subdevice;	/* PCI subsystem device ID */
-	u8		rev;		/* PCI revision ID */
-	uint		pci_bus;	/* PCI bus value */
-	uint		pci_slot;	/* PCI slot value */
-	u16		maxports;	/* MAX ports this board can handle */
-	u8		vpd[VPDSIZE];	/* VPD of board, if found */
-	u32		bd_flags;	/* Board flags */
-
-	spinlock_t	bd_lock;	/* Used to protect board */
-
-	u32		state;		/* State of card. */
-	wait_queue_head_t state_wait;	/* Place to sleep on for state change */
-
-	struct		tasklet_struct helper_tasklet; /* Poll helper tasklet */
-
-	u32		wait_for_bios;
-	u32		wait_for_fep;
-
-	struct cnode    *bd_config;	/* Config of board */
-
-	u16		nasync;		/* Number of ports on card */
-
-	ulong		irq;		/* Interrupt request number */
-	ulong		intr_count;	/* Count of interrupts */
-	u32		intr_used;	/* Non-zero if using interrupts */
-	u32		intr_running;	/* Non-zero if FEP knows its doing */
-					/* interrupts */
-
-	ulong		port;		/* Start of base io port of the card */
-	ulong		port_end;	/* End of base io port of the card */
-	ulong		membase;	/* Start of base memory of the card */
-	ulong		membase_end;	/* End of base memory of the card */
-
-	u8 __iomem	*re_map_port;	/* Remapped io port of the card */
-	u8 __iomem	*re_map_membase;/* Remapped memory of the card */
-
-	u8		inhibit_poller; /* Tells the poller to leave us alone */
-
-	struct channel_t *channels[MAXPORTS]; /* array of pointers to our */
-					      /* channels.                */
-
-	struct tty_driver	*serial_driver;
-	struct tty_port *serial_ports;
-	char		serial_name[200];
-	struct tty_driver	*print_driver;
-	struct tty_port *printer_ports;
-	char		print_name[200];
-
-	struct bs_t __iomem *bd_bs;	/* Base structure pointer         */
-
-	char	*flipbuf;		/* Our flip buffer, alloced if    */
-					/* board is found                 */
-	char	*flipflagbuf;		/* Our flip flag buffer, alloced  */
-					/* if board is found              */
-
-	u16		dpatype;	/* The board "type", as defined   */
-					/* by DPA                         */
-	u16		dpastatus;	/* The board "status", as defined */
-					/* by DPA                         */
-
-	u32		conc_dl_status;	/* Status of any pending conc     */
-					/* download                       */
-};
-
-/************************************************************************
- * Unit flag definitions for un_flags.
- ************************************************************************/
-#define UN_ISOPEN	0x0001		/* Device is open		*/
-#define UN_CLOSING	0x0002		/* Line is being closed		*/
-#define UN_IMM		0x0004		/* Service immediately		*/
-#define UN_BUSY		0x0008		/* Some work this channel	*/
-#define UN_BREAKI	0x0010		/* Input break received		*/
-#define UN_PWAIT	0x0020		/* Printer waiting for terminal	*/
-#define UN_TIME		0x0040		/* Waiting on time		*/
-#define UN_EMPTY	0x0080		/* Waiting output queue empty	*/
-#define UN_LOW		0x0100		/* Waiting output low water mark*/
-#define UN_EXCL_OPEN	0x0200		/* Open for exclusive use	*/
-#define UN_WOPEN	0x0400		/* Device waiting for open	*/
-#define UN_WIOCTL	0x0800		/* Device waiting for open	*/
-#define UN_HANGUP	0x8000		/* Carrier lost			*/
-
-struct device;
-
-/************************************************************************
- * Structure for terminal or printer unit.
- ************************************************************************/
-struct un_t {
-	int	magic;		/* Unit Magic Number.			*/
-	struct	channel_t *un_ch;
-	u32	un_time;
-	u32	un_type;
-	int	un_open_count;	/* Counter of opens to port		*/
-	struct tty_struct *un_tty;/* Pointer to unit tty structure	*/
-	u32	un_flags;	/* Unit flags				*/
-	wait_queue_head_t un_flags_wait; /* Place to sleep to wait on unit */
-	u32	un_dev;		/* Minor device number			*/
-	tcflag_t un_oflag;	/* oflags being done on board		*/
-	tcflag_t un_lflag;	/* lflags being done on board		*/
-	struct device *un_sysfs;
-};
-
-/************************************************************************
- * Device flag definitions for ch_flags.
- ************************************************************************/
-#define CH_PRON         0x0001          /* Printer on string                */
-#define CH_OUT          0x0002          /* Dial-out device open             */
-#define CH_STOP         0x0004          /* Output is stopped                */
-#define CH_STOPI        0x0008          /* Input is stopped                 */
-#define CH_CD           0x0010          /* Carrier is present               */
-#define CH_FCAR         0x0020          /* Carrier forced on                */
-
-#define CH_RXBLOCK      0x0080          /* Enable rx blocked flag           */
-#define CH_WLOW         0x0100          /* Term waiting low event           */
-#define CH_WEMPTY       0x0200          /* Term waiting empty event         */
-#define CH_RENABLE      0x0400          /* Buffer just emptied          */
-#define CH_RACTIVE      0x0800          /* Process active in xxread()   */
-#define CH_RWAIT        0x1000          /* Process waiting in xxread()  */
-#define CH_BAUD0	0x2000		/* Used for checking B0 transitions */
-#define CH_HANGUP       0x8000		/* Hangup received                  */
-
-/*
- * Definitions for ch_sniff_flags
- */
-#define SNIFF_OPEN	0x1
-#define SNIFF_WAIT_DATA	0x2
-#define SNIFF_WAIT_SPACE 0x4
-
-/************************************************************************
- ***	Definitions for Digi ditty(1) command.
- ************************************************************************/
-
-/************************************************************************
- * This module provides application access to special Digi
- * serial line enhancements which are not standard UNIX(tm) features.
- ************************************************************************/
-
-#if !defined(TIOCMODG)
-
-#define	TIOCMODG	(('d'<<8) | 250)	/* get modem ctrl state	*/
-#define	TIOCMODS	(('d'<<8) | 251)	/* set modem ctrl state	*/
-
-#ifndef TIOCM_LE
-#define		TIOCM_LE	0x01		/* line enable		*/
-#define		TIOCM_DTR	0x02		/* data terminal ready	*/
-#define		TIOCM_RTS	0x04		/* request to send	*/
-#define		TIOCM_ST	0x08		/* secondary transmit	*/
-#define		TIOCM_SR	0x10		/* secondary receive	*/
-#define		TIOCM_CTS	0x20		/* clear to send	*/
-#define		TIOCM_CAR	0x40		/* carrier detect	*/
-#define		TIOCM_RNG	0x80		/* ring	indicator	*/
-#define		TIOCM_DSR	0x100		/* data set ready	*/
-#define		TIOCM_RI	TIOCM_RNG	/* ring (alternate)	*/
-#define		TIOCM_CD	TIOCM_CAR	/* carrier detect (alt)	*/
-#endif
-
-#endif
-
-#if !defined(TIOCMSET)
-#define	TIOCMSET	(('d'<<8) | 252)	/* set modem ctrl state	*/
-#define	TIOCMGET	(('d'<<8) | 253)	/* set modem ctrl state	*/
-#endif
-
-#if !defined(TIOCMBIC)
-#define	TIOCMBIC	(('d'<<8) | 254)	/* set modem ctrl state */
-#define	TIOCMBIS	(('d'<<8) | 255)	/* set modem ctrl state */
-#endif
-
-#if !defined(TIOCSDTR)
-#define	TIOCSDTR	(('e'<<8) | 0)		/* set DTR		*/
-#define	TIOCCDTR	(('e'<<8) | 1)		/* clear DTR		*/
-#endif
-
-/************************************************************************
- * Ioctl command arguments for DIGI parameters.
- ************************************************************************/
-#define DIGI_GETA	(('e'<<8) | 94)		/* Read params		*/
-
-#define DIGI_SETA	(('e'<<8) | 95)		/* Set params		*/
-#define DIGI_SETAW	(('e'<<8) | 96)		/* Drain & set params	*/
-#define DIGI_SETAF	(('e'<<8) | 97)		/* Drain, flush & set params */
-
-#define DIGI_KME	(('e'<<8) | 98)		/* Read/Write Host	*/
-						/* Adapter Memory	*/
-
-#define	DIGI_GETFLOW	(('e'<<8) | 99)		/* Get startc/stopc flow */
-						/* control characters    */
-#define	DIGI_SETFLOW	(('e'<<8) | 100)	/* Set startc/stopc flow */
-						/* control characters	 */
-#define	DIGI_GETAFLOW	(('e'<<8) | 101)	/* Get Aux. startc/stopc */
-						/* flow control chars    */
-#define	DIGI_SETAFLOW	(('e'<<8) | 102)	/* Set Aux. startc/stopc */
-						/* flow control chars	 */
-
-#define DIGI_GEDELAY	(('d'<<8) | 246)	/* Get edelay */
-#define DIGI_SEDELAY	(('d'<<8) | 247)	/* Set edelay */
-
-struct	digiflow_t {
-	unsigned char	startc;			/* flow cntl start char	*/
-	unsigned char	stopc;			/* flow cntl stop char	*/
-};
-
-#ifdef	FLOW_2200
-#define	F2200_GETA	(('e'<<8) | 104)	/* Get 2x36 flow cntl flags */
-#define	F2200_SETAW	(('e'<<8) | 105)	/* Set 2x36 flow cntl flags */
-#define		F2200_MASK	0x03		/* 2200 flow cntl bit mask  */
-#define		FCNTL_2200	0x01		/* 2x36 terminal flow cntl  */
-#define		PCNTL_2200	0x02		/* 2x36 printer flow cntl   */
-#define	F2200_XON	0xf8
-#define	P2200_XON	0xf9
-#define	F2200_XOFF	0xfa
-#define	P2200_XOFF	0xfb
-
-#define	FXOFF_MASK	0x03			/* 2200 flow status mask    */
-#define	RCVD_FXOFF	0x01			/* 2x36 Terminal XOFF rcvd  */
-#define	RCVD_PXOFF	0x02			/* 2x36 Printer XOFF rcvd   */
-#endif
-
-/************************************************************************
- * Values for digi_flags
- ************************************************************************/
-#define DIGI_IXON	0x0001		/* Handle IXON in the FEP	*/
-#define DIGI_FAST	0x0002		/* Fast baud rates		*/
-#define RTSPACE		0x0004		/* RTS input flow control	*/
-#define CTSPACE		0x0008		/* CTS output flow control	*/
-#define DSRPACE		0x0010		/* DSR output flow control	*/
-#define DCDPACE		0x0020		/* DCD output flow control	*/
-#define DTRPACE		0x0040		/* DTR input flow control	*/
-#define DIGI_COOK	0x0080		/* Cooked processing done in FEP */
-#define DIGI_FORCEDCD	0x0100		/* Force carrier		*/
-#define	DIGI_ALTPIN	0x0200		/* Alternate RJ-45 pin config	*/
-#define	DIGI_AIXON	0x0400		/* Aux flow control in fep	*/
-#define	DIGI_PRINTER	0x0800		/* Hold port open for flow cntrl*/
-#define DIGI_PP_INPUT	0x1000		/* Change parallel port to input*/
-#define DIGI_DTR_TOGGLE 0x2000		/* Support DTR Toggle		*/
-#define	DIGI_422	0x4000		/* for 422/232 selectable panel */
-#define DIGI_RTS_TOGGLE	0x8000		/* Support RTS Toggle		*/
-
-/************************************************************************
- * These options are not supported on the comxi.
- ************************************************************************/
-#define	DIGI_COMXI	(DIGI_FAST|DIGI_COOK|DSRPACE|DCDPACE|DTRPACE)
-
-#define DIGI_PLEN	28		/* String length		*/
-#define	DIGI_TSIZ	10		/* Terminal string len		*/
-
-/************************************************************************
- * Structure used with ioctl commands for DIGI parameters.
- ************************************************************************/
-struct digi_t {
-	unsigned short	digi_flags;		/* Flags (see above)	*/
-	unsigned short	digi_maxcps;		/* Max printer CPS	*/
-	unsigned short	digi_maxchar;		/* Max chars in print queue */
-	unsigned short	digi_bufsize;		/* Buffer size		*/
-	unsigned char	digi_onlen;		/* Length of ON string	*/
-	unsigned char	digi_offlen;		/* Length of OFF string	*/
-	char		digi_onstr[DIGI_PLEN];	/* Printer on string	*/
-	char		digi_offstr[DIGI_PLEN];	/* Printer off string	*/
-	char		digi_term[DIGI_TSIZ];	/* terminal string	*/
-};
-
-/************************************************************************
- * KME definitions and structures.
- ************************************************************************/
-#define	RW_IDLE		0	/* Operation complete			*/
-#define	RW_READ		1	/* Read Concentrator Memory		*/
-#define	RW_WRITE	2	/* Write Concentrator Memory		*/
-
-struct rw_t {
-	unsigned char	rw_req;		/* Request type			*/
-	unsigned char	rw_board;	/* Host Adapter board number	*/
-	unsigned char	rw_conc;	/* Concentrator number		*/
-	unsigned char	rw_reserved;	/* Reserved for expansion	*/
-	unsigned long	rw_addr;	/* Address in concentrator	*/
-	unsigned short	rw_size;	/* Read/write request length	*/
-	unsigned char	rw_data[128];	/* Data to read/write		*/
-};
-
-/************************************************************************
- * Structure to get driver status information
- ************************************************************************/
-struct digi_dinfo {
-	unsigned long	dinfo_nboards;		/* # boards configured	*/
-	char		dinfo_reserved[12];	/* for future expansion */
-	char		dinfo_version[16];	/* driver version       */
-};
-
-#define	DIGI_GETDD	(('d'<<8) | 248)	/* get driver info      */
-
-/************************************************************************
- * Structure used with ioctl commands for per-board information
- *
- * physsize and memsize differ when board has "windowed" memory
- ************************************************************************/
-struct digi_info {
-	unsigned long	info_bdnum;		/* Board number (0 based)  */
-	unsigned long	info_ioport;		/* io port address         */
-	unsigned long	info_physaddr;		/* memory address          */
-	unsigned long	info_physsize;		/* Size of host mem window */
-	unsigned long	info_memsize;		/* Amount of dual-port mem */
-						/* on board                */
-	unsigned short	info_bdtype;		/* Board type              */
-	unsigned short	info_nports;		/* number of ports         */
-	char		info_bdstate;		/* board state             */
-	char		info_reserved[7];	/* for future expansion    */
-};
-
-#define	DIGI_GETBD	(('d'<<8) | 249)	/* get board info          */
-
-struct digi_stat {
-	unsigned int	info_chan;		/* Channel number (0 based)  */
-	unsigned int	info_brd;		/* Board number (0 based)  */
-	unsigned long	info_cflag;		/* cflag for channel       */
-	unsigned long	info_iflag;		/* iflag for channel       */
-	unsigned long	info_oflag;		/* oflag for channel       */
-	unsigned long	info_mstat;		/* mstat for channel       */
-	unsigned long	info_tx_data;		/* tx_data for channel       */
-	unsigned long	info_rx_data;		/* rx_data for channel       */
-	unsigned long	info_hflow;		/* hflow for channel       */
-	unsigned long	info_reserved[8];	/* for future expansion    */
-};
-
-#define	DIGI_GETSTAT	(('d'<<8) | 244)	/* get board info          */
-/************************************************************************
- *
- * Structure used with ioctl commands for per-channel information
- *
- ************************************************************************/
-struct digi_ch {
-	unsigned long	info_bdnum;		/* Board number (0 based)  */
-	unsigned long	info_channel;		/* Channel index number    */
-	unsigned long	info_ch_cflag;		/* Channel cflag           */
-	unsigned long	info_ch_iflag;		/* Channel iflag           */
-	unsigned long	info_ch_oflag;		/* Channel oflag           */
-	unsigned long	info_chsize;		/* Channel structure size  */
-	unsigned long	info_sleep_stat;	/* sleep status		   */
-	dev_t		info_dev;		/* device number	   */
-	unsigned char	info_initstate;		/* Channel init state	   */
-	unsigned char	info_running;		/* Channel running state   */
-	long		reserved[8];		/* reserved for future use */
-};
-
-/*
-* This structure is used with the DIGI_FEPCMD ioctl to
-* tell the driver which port to send the command for.
-*/
-struct digi_cmd {
-	int	cmd;
-	int	word;
-	int	ncmds;
-	int	chan; /* channel index (zero based) */
-	int	bdid; /* board index (zero based) */
-};
-
-/*
-*  info_sleep_stat defines
-*/
-#define INFO_RUNWAIT	0x0001
-#define INFO_WOPEN	0x0002
-#define INFO_TTIOW	0x0004
-#define INFO_CH_RWAIT	0x0008
-#define INFO_CH_WEMPTY	0x0010
-#define INFO_CH_WLOW	0x0020
-#define INFO_XXBUF_BUSY 0x0040
-
-#define	DIGI_GETCH	(('d'<<8) | 245)	/* get board info          */
-
-/* Board type definitions */
-
-#define	SUBTYPE		0007
-#define	T_PCXI		0000
-#define T_PCXM		0001
-#define T_PCXE		0002
-#define T_PCXR		0003
-#define T_SP		0004
-#define T_SP_PLUS	0005
-#	define T_HERC	0000
-#	define T_HOU	0001
-#	define T_LON	0002
-#	define T_CHA	0003
-#define FAMILY		0070
-#define T_COMXI		0000
-#define T_PCXX		0010
-#define T_CX		0020
-#define T_EPC		0030
-#define	T_PCLITE	0040
-#define	T_SPXX		0050
-#define	T_AVXX		0060
-#define T_DXB		0070
-#define T_A2K_4_8	0070
-#define BUSTYPE		0700
-#define T_ISABUS	0000
-#define T_MCBUS		0100
-#define	T_EISABUS	0200
-#define	T_PCIBUS	0400
-
-/* Board State Definitions */
-
-#define	BD_RUNNING	0x0
-#define	BD_REASON	0x7f
-#define	BD_NOTFOUND	0x1
-#define	BD_NOIOPORT	0x2
-#define	BD_NOMEM	0x3
-#define	BD_NOBIOS	0x4
-#define	BD_NOFEP	0x5
-#define	BD_FAILED	0x6
-#define BD_ALLOCATED	0x7
-#define BD_TRIBOOT	0x8
-#define	BD_BADKME	0x80
-
-#define DIGI_LOOPBACK	(('d'<<8) | 252)	/* Enable/disable UART  */
-						/* internal loopback    */
-#define DIGI_SPOLL	(('d'<<8) | 254)	/* change poller rate   */
-
-#define DIGI_SETCUSTOMBAUD _IOW('e', 106, int)	/* Set integer baud rate */
-#define DIGI_GETCUSTOMBAUD _IOR('e', 107, int)	/* Get integer baud rate */
-#define DIGI_RESET_PORT	   (('e'<<8) | 93)	/* Reset port		 */
-
-/************************************************************************
- * Channel information structure.
- ************************************************************************/
-struct channel_t {
-	int magic;			/* Channel Magic Number		*/
-	struct bs_t __iomem *ch_bs;	/* Base structure pointer       */
-	struct cm_t __iomem *ch_cm;	/* Command queue pointer        */
-	struct board_t *ch_bd;		/* Board structure pointer      */
-	u8 __iomem *ch_vaddr;		/* FEP memory origin            */
-	u8 __iomem *ch_taddr;		/* Write buffer origin          */
-	u8 __iomem *ch_raddr;		/* Read buffer origin           */
-	struct digi_t  ch_digi;		/* Transparent Print structure  */
-	struct un_t ch_tun;		/* Terminal unit info           */
-	struct un_t ch_pun;		/* Printer unit info            */
-
-	spinlock_t	ch_lock;	/* provide for serialization */
-	wait_queue_head_t ch_flags_wait;
-
-	u32	pscan_state;
-	u8	pscan_savechar;
-
-	u32 ch_portnum;			/* Port number, 0 offset.	*/
-	u32 ch_open_count;		/* open count			*/
-	u32	ch_flags;		/* Channel flags                */
-
-	u32	ch_cpstime;		/* Time for CPS calculations    */
-
-	tcflag_t ch_c_iflag;		/* channel iflags               */
-	tcflag_t ch_c_cflag;		/* channel cflags               */
-	tcflag_t ch_c_oflag;		/* channel oflags               */
-	tcflag_t ch_c_lflag;		/* channel lflags               */
-
-	u16  ch_fepiflag;		/* FEP tty iflags               */
-	u16  ch_fepcflag;		/* FEP tty cflags               */
-	u16  ch_fepoflag;		/* FEP tty oflags               */
-	u16  ch_wopen;			/* Waiting for open process cnt */
-	u16  ch_tstart;			/* Transmit buffer start        */
-	u16  ch_tsize;			/* Transmit buffer size         */
-	u16  ch_rstart;			/* Receive buffer start         */
-	u16  ch_rsize;			/* Receive buffer size          */
-	u16  ch_rdelay;			/* Receive delay time           */
-
-	u16	ch_tlw;			/* Our currently set low water mark */
-
-	u16  ch_cook;			/* Output character mask        */
-
-	u8   ch_card;			/* Card channel is on           */
-	u8   ch_stopc;			/* Stop character               */
-	u8   ch_startc;			/* Start character              */
-
-	u8   ch_mostat;			/* FEP output modem status      */
-	u8   ch_mistat;			/* FEP input modem status       */
-	u8   ch_mforce;			/* Modem values to be forced    */
-	u8   ch_mval;			/* Force values                 */
-	u8   ch_fepstopc;		/* FEP stop character           */
-	u8   ch_fepstartc;		/* FEP start character          */
-
-	u8   ch_astopc;			/* Auxiliary Stop character     */
-	u8   ch_astartc;		/* Auxiliary Start character    */
-	u8   ch_fepastopc;		/* Auxiliary FEP stop char      */
-	u8   ch_fepastartc;		/* Auxiliary FEP start char     */
-
-	u8   ch_hflow;			/* FEP hardware handshake       */
-	u8   ch_dsr;			/* stores real dsr value        */
-	u8   ch_cd;			/* stores real cd value         */
-	u8   ch_tx_win;			/* channel tx buffer window     */
-	u8   ch_rx_win;			/* channel rx buffer window     */
-	uint	ch_custom_speed;	/* Custom baud, if set		*/
-	uint	ch_baud_info;		/* Current baud info for /proc output */
-	ulong	ch_rxcount;		/* total of data received so far      */
-	ulong	ch_txcount;		/* total of data transmitted so far   */
-	ulong	ch_err_parity;		/* Count of parity errors on channel  */
-	ulong	ch_err_frame;		/* Count of framing errors on channel */
-	ulong	ch_err_break;		/* Count of breaks on channel	*/
-	ulong	ch_err_overrun;		/* Count of overruns on channel	*/
-};
-
-/************************************************************************
- * Command structure definition.
- ************************************************************************/
-struct cm_t {
-	unsigned short cm_head;		/* Command buffer head offset */
-	unsigned short cm_tail;		/* Command buffer tail offset */
-	unsigned short cm_start;	/* start offset of buffer     */
-	unsigned short cm_max;		/* last offset of buffer      */
-};
-
-/************************************************************************
- * Event structure definition.
- ************************************************************************/
-struct ev_t {
-	unsigned short ev_head;		/* Command buffer head offset */
-	unsigned short ev_tail;		/* Command buffer tail offset */
-	unsigned short ev_start;	/* start offset of buffer     */
-	unsigned short ev_max;		/* last offset of buffer      */
-};
-
-/************************************************************************
- * Download buffer structure.
- ************************************************************************/
-struct downld_t {
-	u8	dl_type;		/* Header                       */
-	u8	dl_seq;			/* Download sequence            */
-	ushort	dl_srev;		/* Software revision number     */
-	ushort	dl_lrev;		/* Low revision number          */
-	ushort	dl_hrev;		/* High revision number         */
-	ushort	dl_seg;			/* Start segment address        */
-	ushort	dl_size;		/* Number of bytes to download  */
-	u8	dl_data[1024];		/* Download data                */
-};
-
-/************************************************************************
- * Per channel buffer structure
- ************************************************************************
- *              Base Structure Entries Usage Meanings to Host           *
- *                                                                      *
- *        W = read write        R = read only                           *
- *        C = changed by commands only                                  *
- *        U = unknown (may be changed w/o notice)                       *
- ************************************************************************/
-struct bs_t {
-	unsigned short  tp_jmp;		/* Transmit poll jump	 */
-	unsigned short  tc_jmp;		/* Cooked procedure jump */
-	unsigned short  ri_jmp;		/* Not currently used	 */
-	unsigned short  rp_jmp;		/* Receive poll jump	 */
-
-	unsigned short  tx_seg;		/* W Tx segment	 */
-	unsigned short  tx_head;	/* W Tx buffer head offset */
-	unsigned short  tx_tail;	/* R Tx buffer tail offset */
-	unsigned short  tx_max;		/* W Tx buffer size - 1    */
-
-	unsigned short  rx_seg;		/* W Rx segment	    */
-	unsigned short  rx_head;	/* W Rx buffer head offset */
-	unsigned short  rx_tail;	/* R Rx buffer tail offset */
-	unsigned short  rx_max;		/* W Rx buffer size - 1    */
-
-	unsigned short  tx_lw;		/* W Tx buffer low water mark */
-	unsigned short  rx_lw;		/* W Rx buffer low water mark */
-	unsigned short  rx_hw;		/* W Rx buffer high water mark*/
-	unsigned short  incr;		/* W Increment to next channel*/
-
-	unsigned short  fepdev;		/* U SCC device base address  */
-	unsigned short  edelay;		/* W Exception delay          */
-	unsigned short  blen;		/* W Break length             */
-	unsigned short  btime;		/* U Break complete time      */
-
-	unsigned short  iflag;		/* C UNIX input flags         */
-	unsigned short  oflag;		/* C UNIX output flags        */
-	unsigned short  cflag;		/* C UNIX control flags       */
-	unsigned short  wfill[13];	/* U Reserved for expansion   */
-
-	unsigned char   num;		/* U Channel number           */
-	unsigned char   ract;		/* U Receiver active counter  */
-	unsigned char   bstat;		/* U Break status bits        */
-	unsigned char   tbusy;		/* W Transmit busy            */
-	unsigned char   iempty;		/* W Transmit empty event     */
-					/* enable                     */
-	unsigned char   ilow;		/* W Transmit low-water event */
-					/* enable                     */
-	unsigned char   idata;		/* W Receive data interrupt   */
-					/* enable                     */
-	unsigned char   eflag;		/* U Host event flags         */
-
-	unsigned char   tflag;		/* U Transmit flags           */
-	unsigned char   rflag;		/* U Receive flags            */
-	unsigned char   xmask;		/* U Transmit ready flags     */
-	unsigned char   xval;		/* U Transmit ready value     */
-	unsigned char   m_stat;		/* RC Modem status bits       */
-	unsigned char   m_change;	/* U Modem bits which changed */
-	unsigned char   m_int;		/* W Modem interrupt enable   */
-					/* bits                       */
-	unsigned char   m_last;		/* U Last modem status        */
-
-	unsigned char   mtran;		/* C Unreported modem trans   */
-	unsigned char   orun;		/* C Buffer overrun occurred  */
-	unsigned char   astartc;	/* W Auxiliary Xon char       */
-	unsigned char   astopc;		/* W Auxiliary Xoff char      */
-	unsigned char   startc;		/* W Xon character            */
-	unsigned char   stopc;		/* W Xoff character           */
-	unsigned char   vnextc;		/* W Vnext character          */
-	unsigned char   hflow;		/* C Software flow control    */
-
-	unsigned char   fillc;		/* U Delay Fill character     */
-	unsigned char   ochar;		/* U Saved output character   */
-	unsigned char   omask;		/* U Output character mask    */
-
-	unsigned char   bfill[13];	/* U Reserved for expansion   */
-
-	unsigned char   scc[16];	/* U SCC registers            */
-};
-
-struct cnode {
-	struct cnode *next;
-	int type;
-	int numbrd;
-
-	union {
-		struct {
-			char  type;	/* Board Type           */
-			long  addr;	/* Memory Address	*/
-			char  *addrstr; /* Memory Address in string */
-			long  pcibus;	/* PCI BUS		*/
-			char  *pcibusstr; /* PCI BUS in string */
-			long  pcislot;	/* PCI SLOT		*/
-			char  *pcislotstr; /* PCI SLOT in string */
-			long  nport;	/* Number of Ports	*/
-			char  *id;	/* tty id		*/
-			long  start;	/* start of tty counting */
-			char  *method;  /* Install method       */
-			char  v_addr;
-			char  v_pcibus;
-			char  v_pcislot;
-			char  v_nport;
-			char  v_id;
-			char  v_start;
-			char  v_method;
-			char  line1;
-			char  line2;
-			char  conc1;   /* total concs in line1 */
-			char  conc2;   /* total concs in line2 */
-			char  module1; /* total modules for line1 */
-			char  module2; /* total modules for line2 */
-			char  *status; /* config status */
-			char  *dimstatus;	 /* Y/N */
-			int   status_index; /* field pointer */
-		} board;
-
-		struct {
-			char  *cable;
-			char  v_cable;
-			long  speed;
-			char  v_speed;
-		} line;
-
-		struct {
-			char  type;
-			char  *connect;
-			long  speed;
-			long  nport;
-			char  *id;
-			char  *idstr;
-			long  start;
-			char  v_connect;
-			char  v_speed;
-			char  v_nport;
-			char  v_id;
-			char  v_start;
-		} conc;
-
-		struct {
-			char type;
-			long nport;
-			char *id;
-			char *idstr;
-			long start;
-			char v_nport;
-			char v_id;
-			char v_start;
-		} module;
-
-		char *ttyname;
-		char *cuname;
-		char *printname;
-		long majornumber;
-		long altpin;
-		long ttysize;
-		long chsize;
-		long bssize;
-		long unsize;
-		long f2size;
-		long vpixsize;
-		long useintr;
-	} u;
-};
-#endif