Remove long-unmaintained ftape driver subsystem.

It's bitrotten, long unmaintained, long hidden under BROKEN_ON_SMP,
etc.  As scheduled in feature-removal-schedule.txt, and ack'd several
times on lkml.

Signed-off-by: Jeff Garzik <jeff@garzik.org>

35 files changed, 0 insertions, 10776 deletions

diff --git a/drivers/char/ftape/lowlevel/Makefile b/drivers/char/ftape/lowlevel/Makefile
deleted file mode 100644
index febab07ba427..000000000000
--- a/drivers/char/ftape/lowlevel/Makefile
+++ /dev/null
@@ -1,43 +0,0 @@
-#
-#       Copyright (C) 1996, 1997 Clau-Justus Heine.
-#
-# 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; 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; see the file COPYING.  If not, write to
-# the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-#
-# $Source: /homes/cvs/ftape-stacked/ftape/lowlevel/Makefile,v $
-# $Revision: 1.4 $
-# $Date: 1997/10/07 09:26:02 $
-#
-#      Makefile for the lowlevel part QIC-40/80/3010/3020 floppy-tape
-#      driver for Linux.
-#
-
-obj-$(CONFIG_FTAPE) += ftape.o
-
-ftape-objs := ftape-init.o fdc-io.o fdc-isr.o \
-	      ftape-bsm.o ftape-ctl.o ftape-read.o ftape-rw.o \
-	      ftape-write.o ftape-io.o ftape-calibr.o ftape-ecc.o fc-10.o \
-	      ftape-buffer.o ftape-format.o ftape_syms.o
-
-ifeq ($(CONFIG_FTAPE),y)
-ftape-objs += ftape-setup.o
-endif
-
-ifndef CONFIG_FT_NO_TRACE_AT_ALL
-ftape-objs += ftape-tracing.o
-endif
-
-ifeq ($(CONFIG_FT_PROC_FS),y)
-ftape-objs += ftape-proc.o
-endif
diff --git a/drivers/char/ftape/lowlevel/fc-10.c b/drivers/char/ftape/lowlevel/fc-10.c
deleted file mode 100644
index 9bc1cddade76..000000000000
--- a/drivers/char/ftape/lowlevel/fc-10.c
+++ /dev/null
@@ -1,175 +0,0 @@
-/*
- *
-
-   Copyright (C) 1993,1994 Jon Tombs.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   The entire guts of this program was written by dosemu, modified to
-   record reads and writes to the ports in the 0x180-0x188 address space,
-   while running the CMS program TAPE.EXE V2.0.5 supplied with the drive.
-
-   Modified to use an array of addresses and generally cleaned up (made
-   much shorter) 4 June 94, dosemu isn't that good at writing short code it
-   would seem :-). Made independent of 0x180, but I doubt it will work
-   at any other address.
-
-   Modified for distribution with ftape source. 21 June 94, SJL.
-
-   Modifications on 20 October 95, by Daniel Cohen (catman@wpi.edu):
-   Modified to support different DMA, IRQ, and IO Ports.  Borland's
-   Turbo Debugger in virtual 8086 mode (TD386.EXE with hardware breakpoints
-   provided by the TDH386.SYS Device Driver) was used on the CMS program
-   TAPE V4.0.5.  I set breakpoints on I/O to ports 0x180-0x187.  Note that
-   CMS's program will not successfully configure the tape drive if you set
-   breakpoints on IO Reads, but you can set them on IO Writes without problems.
-   Known problems:
-   - You can not use DMA Channels 5 or 7.
-
-   Modification on 29 January 96, by Daniel Cohen (catman@wpi.edu):
-   Modified to only accept IRQs 3 - 7, or 9.  Since we can only send a 3 bit
-   number representing the IRQ to the card, special handling is required when
-   IRQ 9 is selected.  IRQ 2 and 9 are the same, and we should request IRQ 9
-   from the kernel while telling the card to use IRQ 2.  Thanks to Greg
-   Crider (gcrider@iclnet.org) for finding and locating this bug, as well as
-   testing the patch.
-
-   Modification on 11 December 96, by Claus Heine (claus@momo.math.rwth-aachen.de):
-   Modified a little to use variahle ft_fdc_base, ft_fdc_irq, ft_fdc_dma 
-   instead of preprocessor symbols. Thus we can compile this into the module
-   or kernel and let the user specify the options as command line arguments.
-
- *
- * $Source: /homes/cvs/ftape-stacked/ftape/lowlevel/fc-10.c,v $
- * $Revision: 1.2 $
- * $Date: 1997/10/05 19:18:04 $
- *
- *      This file contains code for the CMS FC-10/FC-20 card.
- */
-
-#include <asm/io.h>
-#include <linux/ftape.h>
-#include "../lowlevel/ftape-tracing.h"
-#include "../lowlevel/fdc-io.h"
-#include "../lowlevel/fc-10.h"
-
-static __u16 inbs_magic[] = {
-	0x3, 0x3, 0x0, 0x4, 0x7, 0x2, 0x5, 0x3, 0x1, 0x4,
-	0x3, 0x5, 0x2, 0x0, 0x3, 0x7, 0x4, 0x2,
-	0x0, 0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7
-};
-
-static __u16 fc10_ports[] = {
-	0x180, 0x210, 0x2A0, 0x300, 0x330, 0x340, 0x370
-};
-
-int fc10_enable(void)
-{
-	int i;
-	__u8 cardConfig = 0x00;
-	__u8 x;
-	TRACE_FUN(ft_t_flow);
-
-/*  This code will only work if the FC-10 (or FC-20) is set to
- *  use DMA channels 1, 2, or 3.  DMA channels 5 and 7 seem to be 
- *  initialized by the same command as channels 1 and 3, respectively.
- */
-	if (ft_fdc_dma > 3) {
-		TRACE_ABORT(0, ft_t_err,
-"Error: The FC-10/20 must be set to use DMA channels 1, 2, or 3!");
-	}
-/*  Only allow the FC-10/20 to use IRQ 3-7, or 9.  Note that CMS's program
- *  only accepts IRQ's 2-7, but in linux, IRQ 2 is the same as IRQ 9.
- */
-	if (ft_fdc_irq < 3 || ft_fdc_irq == 8 || ft_fdc_irq > 9) {
-		TRACE_ABORT(0, ft_t_err, 
-"Error: The FC-10/20 must be set to use IRQ levels 3 - 7, or 9!\n"
-KERN_INFO "Note: IRQ 9 is the same as IRQ 2");
-	}
-	/*  Clear state machine ???
-	 */
-	for (i = 0; i < NR_ITEMS(inbs_magic); i++) {
-		inb(ft_fdc_base + inbs_magic[i]);
-	}
-	outb(0x0, ft_fdc_base);
-
-	x = inb(ft_fdc_base);
-	if (x == 0x13 || x == 0x93) {
-		for (i = 1; i < 8; i++) {
-			if (inb(ft_fdc_base + i) != x) {
-				TRACE_EXIT 0;
-			}
-		}
-	} else {
-		TRACE_EXIT 0;
-	}
-
-	outb(0x8, ft_fdc_base);
-
-	for (i = 0; i < 8; i++) {
-		if (inb(ft_fdc_base + i) != 0x0) {
-			TRACE_EXIT 0;
-		}
-	}
-	outb(0x10, ft_fdc_base);
-
-	for (i = 0; i < 8; i++) {
-		if (inb(ft_fdc_base + i) != 0xff) {
-			TRACE_EXIT 0;
-		}
-	}
-
-	/*  Okay, we found a FC-10 card ! ???
-	 */
-	outb(0x0, fdc.ccr);
-
-	/*  Clear state machine again ???
-	 */
-	for (i = 0; i < NR_ITEMS(inbs_magic); i++) {
-		inb(ft_fdc_base + inbs_magic[i]);
-	}
-	/* Send io port */
-	for (i = 0; i < NR_ITEMS(fc10_ports); i++)
-		if (ft_fdc_base == fc10_ports[i])
-			cardConfig = i + 1;
-	if (cardConfig == 0) {
-		TRACE_EXIT 0;	/* Invalid I/O Port */
-	}
-	/* and IRQ - If using IRQ 9, tell the FC card it is actually IRQ 2 */
-	if (ft_fdc_irq != 9)
-		cardConfig |= ft_fdc_irq << 3;
-	else
-		cardConfig |= 2 << 3;
-
-	/* and finally DMA Channel */
-	cardConfig |= ft_fdc_dma << 6;
-	outb(cardConfig, ft_fdc_base);	/* DMA [2 bits]/IRQ [3 bits]/BASE [3 bits] */
-
-	/*  Enable FC-10 ???
-	 */
-	outb(0, fdc.ccr);
-	outb(0, fdc.dor2);
-	outb(FDC_DMA_MODE /* 8 */, fdc.dor);
-	outb(FDC_DMA_MODE /* 8 */, fdc.dor);
-	outb(1, fdc.dor2);
-
-	/*************************************
-	 *
-	 * cH: why the hell should this be necessary? This is done 
-	 *     by fdc_reset()!!!
-	 *
-	 *************************************/
-	/*  Initialize fdc, select drive B:
-	 */
-	outb(FDC_DMA_MODE, fdc.dor);	/* assert reset, dma & irq enabled */
-	/*       0x08    */
-	outb(FDC_DMA_MODE|FDC_RESET_NOT, fdc.dor);	/* release reset */
-	/*       0x08    |   0x04   = 0x0c */
-	outb(FDC_DMA_MODE|FDC_RESET_NOT|FDC_MOTOR_1|FTAPE_SEL_B, fdc.dor);
-	/*       0x08    |   0x04      |  0x20     |  0x01  = 0x2d */    
-	/* select drive 1 */ /* why not drive 0 ???? */
-	TRACE_EXIT (x == 0x93) ? 2 : 1;
-}
diff --git a/drivers/char/ftape/lowlevel/fc-10.h b/drivers/char/ftape/lowlevel/fc-10.h
deleted file mode 100644
index da7b88bca889..000000000000
--- a/drivers/char/ftape/lowlevel/fc-10.h
+++ /dev/null
@@ -1,39 +0,0 @@
-#ifndef _FC_10_H
-#define _FC_10_H
-
-/*
- * Copyright (C) 1994-1996 Bas Laarhoven.
-
- 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; 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; see the file COPYING.  If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- *
- * $Source: /homes/cvs/ftape-stacked/ftape/lowlevel/fc-10.h,v $
- * $Revision: 1.1 $
- * $Date: 1997/09/19 09:05:22 $
- *
- *      This file contains definitions for the FC-10 code
- *      of the QIC-40/80 floppy-tape driver for Linux.
- */
-
-/*
- *      fc-10.c defined global vars.
- */
-
-/*
- *      fc-10.c defined global functions.
- */
-extern int fc10_enable(void);
-
-#endif
diff --git a/drivers/char/ftape/lowlevel/fdc-io.c b/drivers/char/ftape/lowlevel/fdc-io.c
deleted file mode 100644
index bbcf918f056f..000000000000
--- a/drivers/char/ftape/lowlevel/fdc-io.c
+++ /dev/null
@@ -1,1349 +0,0 @@
-/*
- * Copyright (C) 1993-1996 Bas Laarhoven,
- *           (C) 1996-1997 Claus-Justus Heine.
-
- 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; 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; see the file COPYING.  If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- *
- * $Source: /homes/cvs/ftape-stacked/ftape/lowlevel/fdc-io.c,v $
- * $Revision: 1.7.4.2 $
- * $Date: 1997/11/16 14:48:17 $
- *
- *      This file contains the low-level floppy disk interface code
- *      for the QIC-40/80/3010/3020 floppy-tape driver "ftape" for
- *      Linux.
- */
-
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/ioport.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <asm/system.h>
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <asm/irq.h>
-
-#include <linux/ftape.h>
-#include <linux/qic117.h>
-#include "../lowlevel/ftape-tracing.h"
-#include "../lowlevel/fdc-io.h"
-#include "../lowlevel/fdc-isr.h"
-#include "../lowlevel/ftape-io.h"
-#include "../lowlevel/ftape-rw.h"
-#include "../lowlevel/ftape-ctl.h"
-#include "../lowlevel/ftape-calibr.h"
-#include "../lowlevel/fc-10.h"
-
-/*      Global vars.
- */
-static int ftape_motor;
-volatile int ftape_current_cylinder = -1;
-volatile fdc_mode_enum fdc_mode = fdc_idle;
-fdc_config_info fdc;
-DECLARE_WAIT_QUEUE_HEAD(ftape_wait_intr);
-
-unsigned int ft_fdc_base       = CONFIG_FT_FDC_BASE;
-unsigned int ft_fdc_irq        = CONFIG_FT_FDC_IRQ;
-unsigned int ft_fdc_dma        = CONFIG_FT_FDC_DMA;
-unsigned int ft_fdc_threshold  = CONFIG_FT_FDC_THR;  /* bytes */
-unsigned int ft_fdc_rate_limit = CONFIG_FT_FDC_MAX_RATE; /* bits/sec */
-int ft_probe_fc10        = CONFIG_FT_PROBE_FC10;
-int ft_mach2             = CONFIG_FT_MACH2;
-
-/*      Local vars.
- */
-static spinlock_t fdc_io_lock; 
-static unsigned int fdc_calibr_count;
-static unsigned int fdc_calibr_time;
-static int fdc_status;
-volatile __u8 fdc_head;		/* FDC head from sector id */
-volatile __u8 fdc_cyl;		/* FDC track from sector id */
-volatile __u8 fdc_sect;		/* FDC sector from sector id */
-static int fdc_data_rate = 500;	/* data rate (Kbps) */
-static int fdc_rate_code;	/* data rate code (0 == 500 Kbps) */
-static int fdc_seek_rate = 2;	/* step rate (msec) */
-static void (*do_ftape) (void);
-static int fdc_fifo_state;	/* original fifo setting - fifo enabled */
-static int fdc_fifo_thr;	/* original fifo setting - threshold */
-static int fdc_lock_state;	/* original lock setting - locked */
-static int fdc_fifo_locked;	/* has fifo && lock set ? */
-static __u8 fdc_precomp;	/* default precomp. value (nsec) */
-static __u8 fdc_prec_code;	/* fdc precomp. select code */
-
-static char ftape_id[] = "ftape";  /* used by request irq and free irq */
-
-static int fdc_set_seek_rate(int seek_rate);
-
-void fdc_catch_stray_interrupts(int count)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&fdc_io_lock, flags);
-	if (count == 0) {
-		ft_expected_stray_interrupts = 0;
-	} else {
-		ft_expected_stray_interrupts += count;
-	}
-	spin_unlock_irqrestore(&fdc_io_lock, flags);
-}
-
-/*  Wait during a timeout period for a given FDC status.
- *  If usecs == 0 then just test status, else wait at least for usecs.
- *  Returns -ETIME on timeout. Function must be calibrated first !
- */
-static int fdc_wait(unsigned int usecs, __u8 mask, __u8 state)
-{
-	int count_1 = (fdc_calibr_count * usecs +
-                       fdc_calibr_count - 1) / fdc_calibr_time;
-
-	do {
-		fdc_status = inb_p(fdc.msr);
-		if ((fdc_status & mask) == state) {
-			return 0;
-		}
-	} while (count_1-- >= 0);
-	return -ETIME;
-}
-
-int fdc_ready_wait(unsigned int usecs)
-{
-	return fdc_wait(usecs, FDC_DATA_READY | FDC_BUSY, FDC_DATA_READY);
-}
-
-/* Why can't we just use udelay()?
- */
-static void fdc_usec_wait(unsigned int usecs)
-{
-	fdc_wait(usecs, 0, 1);	/* will always timeout ! */
-}
-
-static int fdc_ready_out_wait(unsigned int usecs)
-{
-	fdc_usec_wait(FT_RQM_DELAY);	/* wait for valid RQM status */
-	return fdc_wait(usecs, FDC_DATA_OUT_READY, FDC_DATA_OUT_READY);
-}
-
-void fdc_wait_calibrate(void)
-{
-	ftape_calibrate("fdc_wait",
-			fdc_usec_wait, &fdc_calibr_count, &fdc_calibr_time); 
-}
-
-/*  Wait for a (short) while for the FDC to become ready
- *  and transfer the next command byte.
- *  Return -ETIME on timeout on getting ready (depends on hardware!).
- */
-static int fdc_write(const __u8 data)
-{
-	fdc_usec_wait(FT_RQM_DELAY);	/* wait for valid RQM status */
-	if (fdc_wait(150, FDC_DATA_READY_MASK, FDC_DATA_IN_READY) < 0) {
-		return -ETIME;
-	} else {
-		outb(data, fdc.fifo);
-		return 0;
-	}
-}
-
-/*  Wait for a (short) while for the FDC to become ready
- *  and transfer the next result byte.
- *  Return -ETIME if timeout on getting ready (depends on hardware!).
- */
-static int fdc_read(__u8 * data)
-{
-	fdc_usec_wait(FT_RQM_DELAY);	/* wait for valid RQM status */
-	if (fdc_wait(150, FDC_DATA_READY_MASK, FDC_DATA_OUT_READY) < 0) {
-		return -ETIME;
-	} else {
-		*data = inb(fdc.fifo);
-		return 0;
-	}
-}
-
-/*  Output a cmd_len long command string to the FDC.
- *  The FDC should be ready to receive a new command or
- *  an error (EBUSY or ETIME) will occur.
- */
-int fdc_command(const __u8 * cmd_data, int cmd_len)
-{
-	int result = 0;
-	unsigned long flags;
-	int count = cmd_len;
-	int retry = 0;
-#ifdef TESTING
-	static unsigned int last_time;
-	unsigned int time;
-#endif
-	TRACE_FUN(ft_t_any);
-
-	fdc_usec_wait(FT_RQM_DELAY);	/* wait for valid RQM status */
-	spin_lock_irqsave(&fdc_io_lock, flags);
-	if (!in_interrupt())
-		/* Yes, I know, too much comments inside this function
-		 * ...
-		 * 
-		 * Yet another bug in the original driver. All that
-		 * havoc is caused by the fact that the isr() sends
-		 * itself a command to the floppy tape driver (pause,
-		 * micro step pause).  Now, the problem is that
-		 * commands are transmitted via the fdc_seek
-		 * command. But: the fdc performs seeks in the
-		 * background i.e. it doesn't signal busy while
-		 * sending the step pulses to the drive. Therefore the
-		 * non-interrupt level driver has no chance to tell
-		 * whether the isr() just has issued a seek. Therefore
-		 * we HAVE TO have a look at the ft_hide_interrupt
-		 * flag: it signals the non-interrupt level part of
-		 * the driver that it has to wait for the fdc until it
-		 * has completet seeking.
-		 *
-		 * THIS WAS PRESUMABLY THE REASON FOR ALL THAT
-		 * "fdc_read timeout" errors, I HOPE :-)
-		 */
-		if (ft_hide_interrupt) {
-			restore_flags(flags);
-			TRACE(ft_t_info,
-			      "Waiting for the isr() completing fdc_seek()");
-			if (fdc_interrupt_wait(2 * FT_SECOND) < 0) {
-				TRACE(ft_t_warn,
-		      "Warning: timeout waiting for isr() seek to complete");
-			}
-			if (ft_hide_interrupt || !ft_seek_completed) {
-				/* There cannot be another
-				 * interrupt. The isr() only stops
-				 * the tape and the next interrupt
-				 * won't come until we have send our
-				 * command to the drive.
-				 */
-				TRACE_ABORT(-EIO, ft_t_bug,
-					    "BUG? isr() is still seeking?\n"
-					    KERN_INFO "hide: %d\n"
-					    KERN_INFO "seek: %d",
-					    ft_hide_interrupt,
-					    ft_seek_completed);
-
-			}
-			fdc_usec_wait(FT_RQM_DELAY);	/* wait for valid RQM status */
-			spin_lock_irqsave(&fdc_io_lock, flags);
-		}
-	fdc_status = inb(fdc.msr);
-	if ((fdc_status & FDC_DATA_READY_MASK) != FDC_DATA_IN_READY) {
-		spin_unlock_irqrestore(&fdc_io_lock, flags);
-		TRACE_ABORT(-EBUSY, ft_t_err, "fdc not ready");
-	} 
-	fdc_mode = *cmd_data;	/* used by isr */
-#ifdef TESTING
-	if (fdc_mode == FDC_SEEK) {
-		time = ftape_timediff(last_time, ftape_timestamp());
-		if (time < 6000) {
-	TRACE(ft_t_bug,"Warning: short timeout between seek commands: %d",
-	      time);
-		}
-	}
-#endif
-	if (!in_interrupt()) {
-		/* shouldn't be cleared if called from isr
-		 */
-		ft_interrupt_seen = 0;
-	}
-	while (count) {
-		result = fdc_write(*cmd_data);
-		if (result < 0) {
-			TRACE(ft_t_fdc_dma,
-			      "fdc_mode = %02x, status = %02x at index %d",
-			      (int) fdc_mode, (int) fdc_status,
-			      cmd_len - count);
-			if (++retry <= 3) {
-				TRACE(ft_t_warn, "fdc_write timeout, retry");
-			} else {
-				TRACE(ft_t_err, "fdc_write timeout, fatal");
-				/* recover ??? */
-				break;
-			}
-		} else {
-			--count;
-			++cmd_data;
-		}
-        }
-#ifdef TESTING
-	if (fdc_mode == FDC_SEEK) {
-		last_time = ftape_timestamp();
-	}
-#endif
-	spin_unlock_irqrestore(&fdc_io_lock, flags);
-	TRACE_EXIT result;
-}
-
-/*  Input a res_len long result string from the FDC.
- *  The FDC should be ready to send the result or an error
- *  (EBUSY or ETIME) will occur.
- */
-int fdc_result(__u8 * res_data, int res_len)
-{
-	int result = 0;
-	unsigned long flags;
-	int count = res_len;
-	int retry = 0;
-	TRACE_FUN(ft_t_any);
-
-	spin_lock_irqsave(&fdc_io_lock, flags);
-	fdc_status = inb(fdc.msr);
-	if ((fdc_status & FDC_DATA_READY_MASK) != FDC_DATA_OUT_READY) {
-		TRACE(ft_t_err, "fdc not ready");
-		result = -EBUSY;
-	} else while (count) {
-		if (!(fdc_status & FDC_BUSY)) {
-			spin_unlock_irqrestore(&fdc_io_lock, flags);
-			TRACE_ABORT(-EIO, ft_t_err, "premature end of result phase");
-		}
-		result = fdc_read(res_data);
-		if (result < 0) {
-			TRACE(ft_t_fdc_dma,
-			      "fdc_mode = %02x, status = %02x at index %d",
-			      (int) fdc_mode,
-			      (int) fdc_status,
-			      res_len - count);
-			if (++retry <= 3) {
-				TRACE(ft_t_warn, "fdc_read timeout, retry");
-			} else {
-				TRACE(ft_t_err, "fdc_read timeout, fatal");
-				/* recover ??? */
-				break;
-				++retry;
-			}
-		} else {
-			--count;
-			++res_data;
-		}
-	}
-	spin_unlock_irqrestore(&fdc_io_lock, flags);
-	fdc_usec_wait(FT_RQM_DELAY);	/* allow FDC to negate BSY */
-	TRACE_EXIT result;
-}
-
-/*      Handle command and result phases for
- *      commands without data phase.
- */
-static int fdc_issue_command(const __u8 * out_data, int out_count,
-		      __u8 * in_data, int in_count)
-{
-	TRACE_FUN(ft_t_any);
-
-	if (out_count > 0) {
-		TRACE_CATCH(fdc_command(out_data, out_count),);
-	}
-	/* will take 24 - 30 usec for fdc_sense_drive_status and
-	 * fdc_sense_interrupt_status commands.
-	 *    35 fails sometimes (5/9/93 SJL)
-	 * On a loaded system it incidentally takes longer than
-	 * this for the fdc to get ready ! ?????? WHY ??????
-	 * So until we know what's going on use a very long timeout.
-	 */
-	TRACE_CATCH(fdc_ready_out_wait(500 /* usec */),);
-	if (in_count > 0) {
-		TRACE_CATCH(fdc_result(in_data, in_count),
-			    TRACE(ft_t_err, "result phase aborted"));
-	}
-	TRACE_EXIT 0;
-}
-
-/*      Wait for FDC interrupt with timeout (in milliseconds).
- *      Signals are blocked so the wait will not be aborted.
- *      Note: interrupts must be enabled ! (23/05/93 SJL)
- */
-int fdc_interrupt_wait(unsigned int time)
-{
-	DECLARE_WAITQUEUE(wait,current);
-	sigset_t old_sigmask;	
-	static int resetting;
-	long timeout;
-
-	TRACE_FUN(ft_t_fdc_dma);
-
- 	if (waitqueue_active(&ftape_wait_intr)) {
-		TRACE_ABORT(-EIO, ft_t_err, "error: nested call");
-	}
-	/* timeout time will be up to USPT microseconds too long ! */
-	timeout = (1000 * time + FT_USPT - 1) / FT_USPT;
-
-	spin_lock_irq(&current->sighand->siglock);
-	old_sigmask = current->blocked;
-	sigfillset(&current->blocked);
-	recalc_sigpending();
-	spin_unlock_irq(&current->sighand->siglock);
-
-	set_current_state(TASK_INTERRUPTIBLE);
-	add_wait_queue(&ftape_wait_intr, &wait);
-	while (!ft_interrupt_seen && timeout)
-		timeout = schedule_timeout_interruptible(timeout);
-
-	spin_lock_irq(&current->sighand->siglock);
-	current->blocked = old_sigmask;
-	recalc_sigpending();
-	spin_unlock_irq(&current->sighand->siglock);
-	
-	remove_wait_queue(&ftape_wait_intr, &wait);
-	/*  the following IS necessary. True: as well
-	 *  wake_up_interruptible() as the schedule() set TASK_RUNNING
-	 *  when they wakeup a task, BUT: it may very well be that
-	 *  ft_interrupt_seen is already set to 1 when we enter here
-	 *  in which case schedule() gets never called, and
-	 *  TASK_RUNNING never set. This has the funny effect that we
-	 *  execute all the code until we leave kernel space, but then
-	 *  the task is stopped (a task CANNOT be preempted while in
-	 *  kernel mode. Sending a pair of SIGSTOP/SIGCONT to the
-	 *  tasks wakes it up again. Funny! :-)
-	 */
-	current->state = TASK_RUNNING; 
-	if (ft_interrupt_seen) { /* woken up by interrupt */
-		ft_interrupt_seen = 0;
-		TRACE_EXIT 0;
-	}
-	/*  Original comment:
-	 *  In first instance, next statement seems unnecessary since
-	 *  it will be cleared in fdc_command. However, a small part of
-	 *  the software seems to rely on this being cleared here
-	 *  (ftape_close might fail) so stick to it until things get fixed !
-	 */
-	/*  My deeply sought of knowledge:
-	 *  Behold NO! It is obvious. fdc_reset() doesn't call fdc_command()
-	 *  but nevertheless uses fdc_interrupt_wait(). OF COURSE this needs to
-	 *  be reset here.
-	 */
-	ft_interrupt_seen = 0;	/* clear for next call */
-	if (!resetting) {
-		resetting = 1;	/* break infinite recursion if reset fails */
-		TRACE(ft_t_any, "cleanup reset");
-		fdc_reset();
-		resetting = 0;
-	}
-	TRACE_EXIT (signal_pending(current)) ? -EINTR : -ETIME;
-}
-
-/*      Start/stop drive motor. Enable DMA mode.
- */
-void fdc_motor(int motor)
-{
-	int unit = ft_drive_sel;
-	int data = unit | FDC_RESET_NOT | FDC_DMA_MODE;
-	TRACE_FUN(ft_t_any);
-
-	ftape_motor = motor;
-	if (ftape_motor) {
-		data |= FDC_MOTOR_0 << unit;
-		TRACE(ft_t_noise, "turning motor %d on", unit);
-	} else {
-		TRACE(ft_t_noise, "turning motor %d off", unit);
-	}
-	if (ft_mach2) {
-		outb_p(data, fdc.dor2);
-	} else {
-		outb_p(data, fdc.dor);
-	}
-	ftape_sleep(10 * FT_MILLISECOND);
-	TRACE_EXIT;
-}
-
-static void fdc_update_dsr(void)
-{
-	TRACE_FUN(ft_t_any);
-
-	TRACE(ft_t_flow, "rate = %d Kbps, precomp = %d ns",
-	      fdc_data_rate, fdc_precomp);
-	if (fdc.type >= i82077) {
-		outb_p((fdc_rate_code & 0x03) | fdc_prec_code, fdc.dsr);
-	} else {
-		outb_p(fdc_rate_code & 0x03, fdc.ccr);
-	}
-	TRACE_EXIT;
-}
-
-void fdc_set_write_precomp(int precomp)
-{
-	TRACE_FUN(ft_t_any);
-
-	TRACE(ft_t_noise, "New precomp: %d nsec", precomp);
-	fdc_precomp = precomp;
-	/*  write precompensation can be set in multiples of 41.67 nsec.
-	 *  round the parameter to the nearest multiple and convert it
-	 *  into a fdc setting. Note that 0 means default to the fdc,
-	 *  7 is used instead of that.
-	 */
-	fdc_prec_code = ((fdc_precomp + 21) / 42) << 2;
-	if (fdc_prec_code == 0 || fdc_prec_code > (6 << 2)) {
-		fdc_prec_code = 7 << 2;
-	}
-	fdc_update_dsr();
-	TRACE_EXIT;
-}
-
-/*  Reprogram the 82078 registers to use Data Rate Table 1 on all drives.
- */
-static void fdc_set_drive_specs(void)
-{
-	__u8 cmd[] = { FDC_DRIVE_SPEC, 0x00, 0x00, 0x00, 0x00, 0xc0};
-	int result;
-	TRACE_FUN(ft_t_any);
-
-	TRACE(ft_t_flow, "Setting of drive specs called");
-	if (fdc.type >= i82078_1) {
-		cmd[1] = (0 << 5) | (2 << 2);
-		cmd[2] = (1 << 5) | (2 << 2);
-		cmd[3] = (2 << 5) | (2 << 2);
-		cmd[4] = (3 << 5) | (2 << 2);
-		result = fdc_command(cmd, NR_ITEMS(cmd));
-		if (result < 0) {
-			TRACE(ft_t_err, "Setting of drive specs failed");
-		}
-	}
-	TRACE_EXIT;
-}
-
-/* Select clock for fdc, must correspond with tape drive setting !
- * This also influences the fdc timing so we must adjust some values.
- */
-int fdc_set_data_rate(int rate)
-{
-	int bad_rate = 0;
-	TRACE_FUN(ft_t_any);
-
-	/* Select clock for fdc, must correspond with tape drive setting !
-	 * This also influences the fdc timing so we must adjust some values.
-	 */
-	TRACE(ft_t_fdc_dma, "new rate = %d",