Merge ../linus

Conflicts:

	drivers/cpufreq/cpufreq.c

1 files changed, 0 insertions, 896 deletions

diff --git a/drivers/char/ftape/lowlevel/ftape-ctl.c b/drivers/char/ftape/lowlevel/ftape-ctl.c
deleted file mode 100644
index 5d7c1ce92d5..00000000000
--- a/drivers/char/ftape/lowlevel/ftape-ctl.c
+++ /dev/null
@@ -1,896 +0,0 @@
-/*
- *      Copyright (C) 1993-1996 Bas Laarhoven,
- *                    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/ftape-ctl.c,v $
- * $Revision: 1.4 $
- * $Date: 1997/11/11 14:37:44 $
- *
- *      This file contains the non-read/write ftape functions for the
- *      QIC-40/80/3010/3020 floppy-tape driver "ftape" for Linux.
- */
-
-#include <linux/errno.h>
-#include <linux/mm.h>
-#include <linux/mman.h>
-
-#include <linux/ftape.h>
-#include <linux/qic117.h>
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
-/* ease porting between pre-2.4.x and later kernels */
-#define vma_get_pgoff(v)      ((v)->vm_pgoff)
-
-#include "../lowlevel/ftape-tracing.h"
-#include "../lowlevel/ftape-io.h"
-#include "../lowlevel/ftape-ctl.h"
-#include "../lowlevel/ftape-write.h"
-#include "../lowlevel/ftape-read.h"
-#include "../lowlevel/ftape-rw.h"
-#include "../lowlevel/ftape-bsm.h"
-
-/*      Global vars.
- */
-ftape_info ftape_status = {
-/*  vendor information */
-	{ 0, },     /* drive type */
-/*  data rates */
-	500,        /* used data rate */
-	500,        /* drive max rate */
-	500,        /* fdc max rate   */
-/*  drive selection, either FTAPE_SEL_A/B/C/D */
-	-1,     /* drive selection */
-/*  flags set after decode the drive and tape status   */
-	0,          /* formatted */
-	1,          /* no tape */
-	1,          /* write protected */
-	1,          /* new tape */
-/*  values of last queried drive/tape status and error */
-	{{0,}},     /* last error code */
-	{{0,}},     /* drive status, configuration, tape status */
-/*  cartridge geometry */
-        20,         /* tracks_per_tape */
-        102,        /* segments_per_track */
-/*  location of header segments, etc. */
-	-1,     /* used_header_segment */
-	-1,     /* header_segment_1 */
-	-1,     /* header_segment_2 */
-	-1,     /* first_data_segment */
-        -1,     /* last_data_segment */
-/*  the format code as stored in the header segment  */
-	fmt_normal, /* format code */
-/*  the default for the qic std: unknown */
-	-1,
-/*  is tape running? */
-	idle,       /* runner_state */
-/*  is tape reading/writing/verifying/formatting/deleting */
-	idle,       /* driver state */
-/*  flags fatal hardware error */
-	1,          /* failure */
-/*  history record */
-	{ 0, }      /* history record */
-};
-	
-int ftape_segments_per_head     = 1020;
-int ftape_segments_per_cylinder = 4;
-int ftape_init_drive_needed = 1; /* need to be global for ftape_reset_drive()
-				  * in ftape-io.c
-				  */
-
-/*      Local vars.
- */
-static const vendor_struct vendors[] = QIC117_VENDORS;
-static const wakeup_method methods[] = WAKEUP_METHODS;
-
-const ftape_info *ftape_get_status(void)
-{
-#if defined(STATUS_PARANOYA)
-	static ftape_info get_status;
-
-	get_status = ftape_status;
-	return &get_status;
-#else
-	return &ftape_status; /*  maybe return only a copy of it to assure 
-			       *  read only access
-			       */
-#endif
-}
-
-static int ftape_not_operational(int status)
-{
-	/* return true if status indicates tape can not be used.
-	 */
-	return ((status ^ QIC_STATUS_CARTRIDGE_PRESENT) &
-		(QIC_STATUS_ERROR |
-		 QIC_STATUS_CARTRIDGE_PRESENT |
-		 QIC_STATUS_NEW_CARTRIDGE));
-}
-
-int ftape_seek_to_eot(void)
-{
-	int status;
-	TRACE_FUN(ft_t_any);
-
-	TRACE_CATCH(ftape_ready_wait(ftape_timeout.pause, &status),);
-	while ((status & QIC_STATUS_AT_EOT) == 0) {
-		if (ftape_not_operational(status)) {
-			TRACE_EXIT -EIO;
-		}
-		TRACE_CATCH(ftape_command_wait(QIC_PHYSICAL_FORWARD,
-					       ftape_timeout.rewind,&status),);
-	}
-	TRACE_EXIT 0;
-}
-
-int ftape_seek_to_bot(void)
-{
-	int status;
-	TRACE_FUN(ft_t_any);
-
-	TRACE_CATCH(ftape_ready_wait(ftape_timeout.pause, &status),);
-	while ((status & QIC_STATUS_AT_BOT) == 0) {
-		if (ftape_not_operational(status)) {
-			TRACE_EXIT -EIO;
-		}
-		TRACE_CATCH(ftape_command_wait(QIC_PHYSICAL_REVERSE,
-					       ftape_timeout.rewind,&status),);
-	}
-	TRACE_EXIT 0;
-}
-
-static int ftape_new_cartridge(void)
-{
-	ft_location.track = -1; /* force seek on first access */
-	ftape_zap_read_buffers();
-	ftape_zap_write_buffers();
-	return 0;
-}
-
-int ftape_abort_operation(void)
-{
-	int result = 0;
-	int status;
-	TRACE_FUN(ft_t_flow);
-
-	if (ft_runner_status == running) {
-		TRACE(ft_t_noise, "aborting runner, waiting");
-		
-		ft_runner_status = do_abort;
-		/* set timeout so that the tape will run to logical EOT
-		 * if we missed the last sector and there are no queue pulses.
-		 */
-		result = ftape_dumb_stop();
-	}
-	if (ft_runner_status != idle) {
-		if (ft_runner_status == do_abort) {
-			TRACE(ft_t_noise, "forcing runner abort");
-		}
-		TRACE(ft_t_noise, "stopping tape");
-		result = ftape_stop_tape(&status);
-		ft_location.known = 0;
-		ft_runner_status  = idle;
-	}
-	ftape_reset_buffer();
-	ftape_zap_read_buffers();
-	ftape_set_state(idle);
-	TRACE_EXIT result;
-}
-
-static int lookup_vendor_id(unsigned int vendor_id)
-{
-	int i = 0;
-
-	while (vendors[i].vendor_id != vendor_id) {
-		if (++i >= NR_ITEMS(vendors)) {
-			return -1;
-		}
-	}
-	return i;
-}
-
-static void ftape_detach_drive(void)
-{
-	TRACE_FUN(ft_t_any);
-
-	TRACE(ft_t_flow, "disabling tape drive and fdc");
-	ftape_put_drive_to_sleep(ft_drive_type.wake_up);
-	fdc_catch_stray_interrupts(1);	/* one always comes */
-	fdc_disable();
-	fdc_release_irq_and_dma();
-	fdc_release_regions();
-	TRACE_EXIT;
-}
-
-static void clear_history(void)
-{
-	ft_history.used = 0;
-	ft_history.id_am_errors =
-		ft_history.id_crc_errors =
-		ft_history.data_am_errors =
-		ft_history.data_crc_errors =
-		ft_history.overrun_errors =
-		ft_history.no_data_errors =
-		ft_history.retries =
-		ft_history.crc_errors =
-		ft_history.crc_failures =
-		ft_history.ecc_failures =
-		ft_history.corrected =
-		ft_history.defects =
-		ft_history.rewinds = 0;
-}
-
-static int ftape_activate_drive(vendor_struct * drive_type)
-{
-	int result = 0;
-	TRACE_FUN(ft_t_flow);
-
-	/* If we already know the drive type, wake it up.
-	 * Else try to find out what kind of drive is attached.
-	 */
-	if (drive_type->wake_up != unknown_wake_up) {
-		TRACE(ft_t_flow, "enabling tape drive and fdc");
-		result = ftape_wakeup_drive(drive_type->wake_up);
-		if (result < 0) {
-			TRACE(ft_t_err, "known wakeup method failed");
-		}
-	} else {
-		wake_up_types method;
-		const ft_trace_t old_tracing = TRACE_LEVEL;
-		if (TRACE_LEVEL < ft_t_flow) {
-			SET_TRACE_LEVEL(ft_t_bug);
-		}
-
-		/*  Try to awaken the drive using all known methods.
-		 *  Lower tracing for a while.
-		 */
-		for (method=no_wake_up; method < NR_ITEMS(methods); ++method) {
-			drive_type->wake_up = method;
-#ifdef CONFIG_FT_TWO_DRIVES
-			/*  Test setup for dual drive configuration.
-			 *  /dev/rft2 uses mountain wakeup
-			 *  /dev/rft3 uses colorado wakeup
-			 *  Other systems will use the normal scheme.
-			 */
-			if ((ft_drive_sel < 2)                            ||
-			    (ft_drive_sel == 2 && method == FT_WAKE_UP_1) ||
-			    (ft_drive_sel == 3 && method == FT_WAKE_UP_2)) {
-				result=ftape_wakeup_drive(drive_type->wake_up);
-			} else {
-				result = -EIO;
-			}
-#else
-			result = ftape_wakeup_drive(drive_type->wake_up);
-#endif
-			if (result >= 0) {
-				TRACE(ft_t_warn, "drive wakeup method: %s",
-				      methods[drive_type->wake_up].name);
-				break;
-			}
-		}
-		SET_TRACE_LEVEL(old_tracing);
-
-		if (method >= NR_ITEMS(methods)) {
-			/* no response at all, cannot open this drive */
-			drive_type->wake_up = unknown_wake_up;
-			TRACE(ft_t_err, "no tape drive found !");
-			result = -ENODEV;
-		}
-	}
-	TRACE_EXIT result;
-}
-
-static int ftape_get_drive_status(void)
-{
-	int result;
-	int status;
-	TRACE_FUN(ft_t_flow);
-
-	ft_no_tape = ft_write_protected = 0;
-	/*    Tape drive is activated now.
-	 *    First clear error status if present.
-	 */
-	do {
-		result = ftape_ready_wait(ftape_timeout.reset, &status);
-		if (result < 0) {
-			if (result == -ETIME) {
-				TRACE(ft_t_err, "ftape_ready_wait timeout");
-			} else if (result == -EINTR) {
-				TRACE(ft_t_err, "ftape_ready_wait aborted");
-			} else {
-				TRACE(ft_t_err, "ftape_ready_wait failed");
-			}
-			TRACE_EXIT -EIO;
-		}
-		/*  Clear error condition (drive is ready !)
-		 */
-		if (status & QIC_STATUS_ERROR) {
-			unsigned int error;
-			qic117_cmd_t command;
-
-			TRACE(ft_t_err, "error status set");
-			result = ftape_report_error(&error, &command, 1);
-			if (result < 0) {
-				TRACE(ft_t_err,
-				      "report_error_code failed: %d", result);
-				/* hope it's working next time */
-				ftape_reset_drive();
-				TRACE_EXIT -EIO;
-			} else if (error != 0) {
-				TRACE(ft_t_noise, "error code   : %d", error);
-				TRACE(ft_t_noise, "error command: %d", command);
-			}
-		}
-		if (status & QIC_STATUS_NEW_CARTRIDGE) {
-			unsigned int error;
-			qic117_cmd_t command;
-			const ft_trace_t old_tracing = TRACE_LEVEL;
-			SET_TRACE_LEVEL(ft_t_bug);
-
-			/*  Undocumented feature: Must clear (not present!)
-			 *  error here or we'll fail later.
-			 */
-			ftape_report_error(&error, &command, 1);
-
-			SET_TRACE_LEVEL(old_tracing);
-			TRACE(ft_t_info, "status: new cartridge");
-			ft_new_tape = 1;
-		} else {
-			ft_new_tape = 0;
-		}
-		FT_SIGNAL_EXIT(_DONT_BLOCK);
-	} while (status & QIC_STATUS_ERROR);
-	
-	ft_no_tape = !(status & QIC_STATUS_CARTRIDGE_PRESENT);
-	ft_write_protected = (status & QIC_STATUS_WRITE_PROTECT) != 0;
-	if (ft_no_tape) {
-		TRACE(ft_t_warn, "no cartridge present");
-	} else {
-		if (ft_write_protected) {
-			TRACE(ft_t_noise, "Write protected cartridge");
-		}
-	}
-	TRACE_EXIT 0;
-}
-
-static void ftape_log_vendor_id(void)
-{
-	int vendor_index;
-	TRACE_FUN(ft_t_flow);
-
-	ftape_report_vendor_id(&ft_drive_type.vendor_id);
-	vendor_index = lookup_vendor_id(ft_drive_type.vendor_id);
-	if (ft_drive_type.vendor_id == UNKNOWN_VENDOR &&
-	    ft_drive_type.wake_up == wake_up_colorado) {
-		vendor_index = 0;
-		/* hack to get rid of all this mail */
-		ft_drive_type.vendor_id = 0;
-	}
-	if (vendor_index < 0) {
-		/* Unknown vendor id, first time opening device.  The
-		 * drive_type remains set to type found at wakeup
-		 * time, this will probably keep the driver operating
-		 * for this new vendor.  
-		 */
-		TRACE(ft_t_warn, "\n"
-		      KERN_INFO "============ unknown vendor id ===========\n"
-		      KERN_INFO "A new, yet unsupported tape drive is found\n"
-		      KERN_INFO "Please report the following values:\n"
-		      KERN_INFO "   Vendor id     : 0x%04x\n"
-		      KERN_INFO "   Wakeup method : %s\n"
-		      KERN_INFO "And a description of your tape drive\n"
-		      KERN_INFO "to "THE_FTAPE_MAINTAINER"\n"
-		      KERN_INFO "==========================================",
-		      ft_drive_type.vendor_id,
-		      methods[ft_drive_type.wake_up].name);
-		ft_drive_type.speed = 0;		/* unknown */
-	} else {
-		ft_drive_type.name  = vendors[vendor_index].name;
-		ft_drive_type.speed = vendors[vendor_index].speed;
-		TRACE(ft_t_info, "tape drive type: %s", ft_drive_type.name);
-		/* scan all methods for this vendor_id in table */
-		while(ft_drive_type.wake_up != vendors[vendor_index].wake_up) {
-			if (vendor_index < NR_ITEMS(vendors) - 1 &&
-			    vendors[vendor_index + 1].vendor_id 
-			    == 
-			    ft_drive_type.vendor_id) {
-				++vendor_index;
-			} else {
-				break;
-			}
-		}
-		if (ft_drive_type.wake_up != vendors[vendor_index].wake_up) {
-			TRACE(ft_t_warn, "\n"
-		     KERN_INFO "==========================================\n"
-		     KERN_INFO "wakeup type mismatch:\n"
-		     KERN_INFO "found: %s, expected: %s\n"
-		     KERN_INFO "please report this to "THE_FTAPE_MAINTAINER"\n"
-		     KERN_INFO "==========================================",
-			      methods[ft_drive_type.wake_up].name,
-			      methods[vendors[vendor_index].wake_up].name);
-		}
-	}
-	TRACE_EXIT;
-}
-
-void ftape_calc_timeouts(unsigned int qic_std,
-			 unsigned int data_rate,
-			 unsigned int tape_len)
-{
-	int speed;		/* deci-ips ! */
-	int ff_speed;
-	int length;
-	TRACE_FUN(ft_t_any);
-
-	/*                           tape transport speed
-	 *  data rate:        QIC-40   QIC-80   QIC-3010 QIC-3020
-	 *
-	 *    250 Kbps        25 ips     n/a      n/a      n/a
-	 *    500 Kbps        50 ips   34 ips   22.6 ips   n/a
-	 *      1 Mbps          n/a    68 ips   45.2 ips 22.6 ips
-	 *      2 Mbps          n/a      n/a      n/a    45.2 ips
-	 *
-	 *  fast tape transport speed is at least 68 ips.
-	 */
-	switch (qic_std) {
-	case QIC_TAPE_QIC40:
-		speed = (data_rate == 250) ? 250 : 500;
-		break;
-	case QIC_TAPE_QIC80:
-		speed = (data_rate == 500) ? 340 : 680;
-		break;
-	case QIC_TAPE_QIC3010:
-		speed = (data_rate == 500) ? 226 : 452;
-		break;
-	case QIC_TAPE_QIC3020:
-		speed = (data_rate == 1000) ? 226 : 452;
-		break;
-	default:
-		TRACE(ft_t_bug, "Unknown qic_std (bug) ?");
-		speed = 500;
-		break;
-	}
-	if (ft_drive_type.speed == 0) {
-		unsigned long t0;
-		static int dt = 0;     /* keep gcc from complaining */
-		static int first_time = 1;
-
-		/*  Measure the time it takes to wind to EOT and back to BOT.
-		 *  If the tape length is known, calculate the rewind speed.
-		 *  Else keep the time value for calculation of the rewind
-		 *  speed later on, when the length _is_ known.
-		 *  Ask for a report only when length and speed are both known.
-		 */
-		if (first_time) {
-			ftape_seek_to_bot();
-			t0 = jiffies;
-			ftape_seek_to_eot();
-			ftape_seek_to_bot();
-			dt = (int) (((jiffies - t0) * FT_USPT) / 1000);
-			if (dt < 1) {
-				dt = 1;	/* prevent div by zero on failures */
-			}
-			first_time = 0;
-			TRACE(ft_t_info,
-			      "trying to determine seek timeout, got %d msec",
-			      dt);
-		}
-		if (tape_len != 0) {
-			ft_drive_type.speed = 
-				(2 * 12 * tape_len * 1000) / dt;
-			TRACE(ft_t_warn, "\n"
-		     KERN_INFO "==========================================\n"
-		     KERN_INFO "drive type: %s\n"
-		     KERN_INFO "delta time = %d ms, length = %d ft\n"
-		     KERN_INFO "has a maximum tape speed of %d ips\n"
-		     KERN_INFO "please report this to "THE_FTAPE_MAINTAINER"\n"
-		     KERN_INFO "==========================================",
-			      ft_drive_type.name, dt, tape_len, 
-			      ft_drive_type.speed);
-		}
-	}
-	/*  Handle unknown length tapes as very long ones. We'll
-	 *  determine the actual length from a header segment later.
-	 *  This is normal for all modern (Wide,TR1/2/3) formats.
-	 */
-	if (tape_len <= 0) {
-		TRACE(ft_t_noise,
-		      "Unknown tape length, using maximal timeouts");
-		length = QIC_TOP_TAPE_LEN;	/* use worst case values */
-	} else {
-		length = tape_len;		/* use actual values */
-	}
-	if (ft_drive_type.speed == 0) {
-		ff_speed = speed; 
-	} else {
-		ff_speed = ft_drive_type.speed;
-	}
-	/*  time to go from bot to eot at normal speed (data rate):
-	 *  time = (1+delta) * length (ft) * 12 (inch/ft) / speed (ips)
-	 *  delta = 10 % for seek speed, 20 % for rewind speed.
-	 */
-	ftape_timeout.seek = (length * 132 * FT_SECOND) / speed;
-	ftape_timeout.rewind = (length * 144 * FT_SECOND) / (10 * ff_speed);
-	ftape_timeout.reset = 20 * FT_SECOND + ftape_timeout.rewind;
-	TRACE(ft_t_noise, "timeouts for speed = %d, length = %d\n"
-	      KERN_INFO "seek timeout  : %d sec\n"
-	      KERN_INFO "rewind timeout: %d sec\n"
-	      KERN_INFO "reset timeout : %d sec",
-	      speed, length,
-	      (ftape_timeout.seek + 500) / 1000,
-	      (ftape_timeout.rewind + 500) / 1000,
-	      (ftape_timeout.reset + 500) / 1000);
-	TRACE_EXIT;
-}
-
-/* This function calibrates the datarate (i.e. determines the maximal
- * usable data rate) and sets the global variable ft_qic_std to qic_std
- *
- */
-int ftape_calibrate_data_rate(unsigned int qic_std)
-{
-	int rate = ft_fdc_rate_limit;
-	int result;
-	TRACE_FUN(ft_t_flow);
-
-	ft_qic_std = qic_std;
-
-	if (ft_qic_std == -1) {
-		TRACE_ABORT(-EIO, ft_t_err,
-		"Unable to determine data rate if QIC standard is unknown");
-	}
-
-	/*  Select highest rate supported by both fdc and drive.
-	 *  Start with highest rate supported by the fdc.
-	 */
-	while (fdc_set_data_rate(rate) < 0 && rate > 250) {
-		rate /= 2;
-	}
-	TRACE(ft_t_info,
-	      "Highest FDC supported data rate: %d Kbps", rate);
-	ft_fdc_max_rate = rate;
-	do {
-		result = ftape_set_data_rate(rate, ft_qic_std);
-	} while (result == -EINVAL && (rate /= 2) > 250);
-	if (result < 0) {
-		TRACE_ABORT(-EIO, ft_t_err, "set datarate failed");
-	}
-	ft_data_rate = rate;
-	TRACE_EXIT 0;
-}
-
-static int ftape_init_drive(void)
-{
-	int status;
-	qic_model model;
-	unsigned int qic_std;
-	unsigned int data_rate;
-	TRACE_FUN(ft_t_flow);
-
-	ftape_init_drive_needed = 0; /* don't retry if this fails ? */
-	TRACE_CATCH(ftape_report_raw_drive_status(&status),);
-	if (status & QIC_STATUS_CARTRIDGE_PRESENT) {
-		if (!(status & QIC_STATUS_AT_BOT)) {
-			/*  Antique drives will get here after a soft reset,
-			 *  modern ones only if the driver is loaded when the
-			 *  tape wasn't rewound properly.
-			 */
-			/* Tape should be at bot if new cartridge ! */
-			ftape_seek_to_bot();
-		}
-		if (!(status & QIC_STATUS_REFERENCED)) {
-			TRACE(ft_t_flow, "starting seek_load_point");
-			TRACE_CATCH(ftape_command_wait(QIC_SEEK_LOAD_POINT,
-						       ftape_timeout.reset,
-						       &status),);
-		}
-	}
-	ft_formatted = (status & QIC_STATUS_REFERENCED) != 0;
-	if (!ft_formatted) {
-		TRACE(ft_t_warn, "Warning: tape is not formatted !");
-	}
-
-	/*  report configuration aborts when ftape_tape_len == -1
-	 *  unknown qic_std is okay if not formatted.
-	 */
-	TRACE_CATCH(ftape_report_configuration(&model,
-					       &data_rate,
-					       &qic_std,
-					       &ftape_tape_len),);
-
-	/*  Maybe add the following to the /proc entry
-	 */
-	TRACE(ft_t_info, "%s drive @ %d Kbps",
-	      (model == prehistoric) ? "prehistoric" :
-	      ((model == pre_qic117c) ? "pre QIC-117C" :
-	       ((model == post_qic117b) ? "post QIC-117B" :
-		"post QIC-117D")), data_rate);
-
-	if (ft_formatted) {
-		/*  initialize ft_used_data_rate to maximum value 
-		 *  and set ft_qic_std
-		 */
-		TRACE_CATCH(ftape_calibrate_data_rate(qic_std),);
-		if (ftape_tape_len == 0) {
-			TRACE(ft_t_info, "unknown length QIC-%s tape",
-			      (ft_qic_std == QIC_TAPE_QIC40) ? "40" :
-			      ((ft_qic_std == QIC_TAPE_QIC80) ? "80" :
-			       ((ft_qic_std == QIC_TAPE_QIC3010) 
-				? "3010" : "3020")));
-		} else {
-			TRACE(ft_t_info, "%d ft. QIC-%s tape", ftape_tape_len,
-			      (ft_qic_std == QIC_TAPE_QIC40) ? "40" :
-			      ((ft_qic_std == QIC_TAPE_QIC80) ? "80" :
-			       ((ft_qic_std == QIC_TAPE_QIC3010)
-				? "3010" : "3020")));
-		}
-		ftape_calc_timeouts(ft_qic_std, ft_data_rate, ftape_tape_len);
-		/* soft write-protect QIC-40/QIC-80 cartridges used with a
-		 * Colorado T3000 drive. Buggy hardware!
-		 */
-		if ((ft_drive_type.vendor_id == 0x011c6) &&
-		    ((ft_qic_std == QIC_TAPE_QIC40 ||
-		      ft_qic_std == QIC_TAPE_QIC80) &&
-		     !ft_write_protected)) {
-			TRACE(ft_t_warn, "\n"
-	KERN_INFO "The famous Colorado T3000 bug:\n"
-	KERN_INFO "%s drives can't write QIC40 and QIC80\n"
-	KERN_INFO "cartridges but don't set the write-protect flag!",
-			      ft_drive_type.name);
-			ft_write_protected = 1;
-		}
-	} else {
-		/*  Doesn't make too much sense to set the data rate
-		 *  because we don't know what to use for the write
-		 *  precompensation.
-		 *  Need to do this again when formatting the cartridge.
-		 */
-		ft_data_rate = data_rate;
-		ftape_calc_timeouts(QIC_TAPE_QIC40,
-				    data_rate,
-				    ftape_tape_len);
-	}
-	ftape_new_cartridge();
-	TRACE_EXIT 0;
-}
-
-static void ftape_munmap(void)
-{
-	int i;
-	TRACE_FUN(ft_t_flow);
-	
-	for (i = 0; i < ft_nr_buffers; i++) {
-		ft_buffer[i]->mmapped = 0;
-	}
-	TRACE_EXIT;
-}
-
-/*   Map the dma buffers into the virtual address range given by vma.
- *   We only check the caller doesn't map non-existent buffers. We
- *   don't check for multiple mappings.
- */
-int ftape_mmap(struct vm_area_struct *vma)
-{
-	int num_buffers;
-	int i;
-	TRACE_FUN(ft_t_flow);
-	
-	if (ft_failure) {
-		TRACE_EXIT -ENODEV;
-	}
-	if (!(vma->vm_flags & (VM_READ|VM_WRITE))) {
-		TRACE_ABORT(-EINVAL, ft_t_err, "Undefined mmap() access");
-	}
-	if (vma_get_pgoff(vma) != 0) {
-		TRACE_ABORT(-EINVAL, ft_t_err, "page offset must be 0");
-	}
-	if ((vma->vm_end - vma->vm_start) % FT_BUFF_SIZE != 0) {
-		TRACE_ABORT(-EINVAL, ft_t_err,
-			    "size = %ld, should be a multiple of %d",
-			    vma->vm_end - vma->vm_start,
-			    FT_BUFF_SIZE);
-	}
-	num_buffers = (vma->vm_end - vma->vm_start) / FT_BUFF_SIZE;
-	if (num_buffers > ft_nr_buffers) {
-		TRACE_ABORT(-EINVAL,
-			    ft_t_err, "size = %ld, should be less than %d",
-			    vma->vm_end - vma->vm_start,
-			    ft_nr_buffers * FT_BUFF_SIZE);
-	}
-	if (ft_driver_state != idle) {
-		/* this also clears the buffer states 
-		 */
-		ftape_abort_operation();
-	} else {
-		ftape_reset_buffer();
-	}
-	for (i = 0; i < num_buffers; i++) {
-		unsigned long pfn;
-
-		pfn = virt_to_phys(ft_buffer[i]->address) >> PAGE_SHIFT;
-		TRACE_CATCH(remap_pfn_range(vma, vma->vm_start +
-					     i * FT_BUFF_SIZE,
-					     pfn,
-					     FT_BUFF_SIZE,
-					     vma->vm_page_prot),
-			    _res = -EAGAIN);
-		TRACE(ft_t_noise, "remapped dma buffer @ %p to location @ %p",
-		      ft_buffer[i]->address,
-		      (void *)(vma->vm_start + i * FT_BUFF_SIZE));
-	}
-	for (i = 0; i < num_buffers; i++) {
-		memset(ft_buffer[i]->address, 0xAA, FT_BUFF_SIZE);
-		ft_buffer[i]->mmapped++;
-	}	
-	TRACE_EXIT 0;
-}
-
-static void ftape_init_driver(void); /* forward declaration */
-
-/*      OPEN routine called by kernel-interface code
- */
-int ftape_enable(int drive_selection)
-{
-	TRACE_FUN(ft_t_any);
-
-	if (ft_drive_sel == -1 || ft_drive_sel != drive_selection) {
-		/* Other selection than last time
-		 */
-		ftape_init_driver();
-	}
-	ft_drive_sel = FTAPE_SEL(drive_selection);
-	ft_failure = 0;
-	TRACE_CATCH(fdc_init(),); /* init & detect fdc */
-	TRACE_CATCH(ftape_activate_drive(&ft_drive_type),
-		    fdc_disable();
-		    fdc_release_irq_and_dma();
-		    fdc_release_regions());
-	TRACE_CATCH(ftape_get_drive_status(), ftape_detach_drive());
-	if (ft_drive_type.vendor_id == UNKNOWN_VENDOR) {
-		ftape_log_vendor_id();
-	}
-	if (ft_new_tape) {
-		ftape_init_drive_needed = 1;
-	}
-	if (!ft_no_tape && ftape_init_drive_needed) {
-		TRACE_CATCH(ftape_init_drive(), ftape_detach_drive());
-	}
-	ftape_munmap(); /* clear the mmap flag */
-	clear_history();
-	TRACE_EXIT 0;
-}
-
-/*   release routine called by the high level interface modules
- *   zftape or sftape.
- */
-void ftape_disable(void)
-{
-	int i;
-	TRACE_FUN(ft_t_any);
-
-	for (i = 0; i < ft_nr_buffers; i++) {
-		if (ft_buffer[i]->mmapped) {
-			TRACE(ft_t_noise, "first byte of buffer %d: 0x%02x",
-			      i, *ft_buffer[i]->address);
-		}
-	}
-	if (sigtestsetmask(&current->pending.signal, _DONT_BLOCK) && 
-	    !(sigtestsetmask(&current->pending.signal, _NEVER_BLOCK)) &&
-	    ftape_tape_running) {
-		TRACE(ft_t_warn,
-		      "Interrupted by fatal signal and tape still running");
-		ftape_dumb_stop();
-		ftape_abort_operation(); /* it's annoying */
-	} else {
-		ftape_set_state(idle);
-	}
-	ftape_detach_drive();
-	if (ft_history.used) {
-		TRACE(ft_t_info, "== Non-fatal errors this run: ==");
-		TRACE(ft_t_info, "fdc isr statistics:\n"
-		      KERN_INFO " id_am_errors     : %3d\n"
-		      KERN_INFO " id_crc_errors    : %3d\n"
-		      KERN_INFO " data_am_errors   : %3d\n"
-		      KERN_INFO " data_crc_errors  : %3d\n"
-		      KERN_INFO " overrun_errors   : %3d\n"
-		      KERN_INFO " no_data_errors   : %3d\n"
-		      KERN_INFO " retries          : %3d",
-		      ft_history.id_am_errors,   ft_history.id_crc_errors,
-		      ft_history.data_am_errors, ft_history.data_crc_errors,
-		      ft_history.overrun_errors, ft_history.no_data_errors,
-		      ft_history.retries);
-		if (ft_history.used & 1) {
-			TRACE(ft_t_info, "ecc statistics:\n"
-			      KERN_INFO " crc_errors       : %3d\n"
-			      KERN_INFO " crc_failures     : %3d\n"
-			      KERN_INFO " ecc_failures     : %3d\n"
-			      KERN_INFO " sectors corrected: %3d",
-			      ft_history.crc_errors,   ft_history.crc_failures,
-			      ft_history.ecc_failures, ft_history.corrected);
-		}
-		if (ft_history.defects > 0) {
-			TRACE(ft_t_warn, "Warning: %d media defects!",
-			      ft_history.defects);
-		}
-		if (ft_history.rewinds > 0) {
-			TRACE(ft_t_info, "tape motion statistics:\n"
-			      KERN_INFO "repositions       : %3d",
-			      ft_history.rewinds);
-		}
-	}
-	ft_failure = 1;
-	TRACE_EXIT;
-}
-
-static void ftape_init_driver(void)
-{
-	TRACE_FUN(ft_t_flow);
-
-	ft_drive_type.vendor_id = UNKNOWN_VENDOR;
-	ft_drive_type.speed     = 0;
-	ft_drive_type.wake_up   = unknown_wake_up;
-	ft_drive_type.name      = "Unknown";
-
-	ftape_timeout.seek      = 650 * FT_SECOND;
-	ftape_timeout.reset     = 670 * FT_SECOND;
-	ftape_timeout.rewind    = 650 * FT_SECOND;
-	ftape_timeout.head_seek =  15 * FT_SECOND;
-	ftape_timeout.stop      =   5 * FT_SECOND;
-	ftape_timeout.pause     =  16 * FT_SECOND;
-
-	ft_qic_std             = -1;
-	ftape_tape_len         = 0;  /* unknown */
-	ftape_current_command  = 0;
-	ftape_current_cylinder = -1;
-
-	ft_segments_per_track       = 102;
-	ftape_segments_per_head     = 1020;
-	ftape_segments_per_cylinder = 4;
-	ft_tracks_per_tape          = 20;
-
-	ft_failure = 1;
-
-	ft_formatted       = 0;
-	ft_no_tape         = 1;
-	ft_write_protected = 1;
-	ft_new_tape        = 1;
-
-	ft_driver_state = idle;
-
-	ft_data_rate = 
-		ft_fdc_max_rate   = 500;
-	ft_drive_max_rate = 0; /* triggers set_rate_test() */
-
-	ftape_init_drive_needed = 1;
-
-	ft_header_segment_1    = -1;
-	ft_header_segment_2    = -1;
-	ft_used_header_segment = -1;
-	ft_first_data_segment  = -1;
-	ft_last_data_segment   = -1;
-
-	ft_location.track = -1;
-	ft_location.known = 0;
-
-	ftape_tape_running = 0;
-	ftape_might_be_off_track = 1;
-
-	ftape_new_cartridge();	/* init some tape related variables */
-	ftape_init_bsm();
-	TRACE_EXIT;
-}