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diff --git a/drivers/char/ftape/lowlevel/fdc-io.h b/drivers/char/ftape/lowlevel/fdc-io.h
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+++ b/drivers/char/ftape/lowlevel/fdc-io.h
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+#ifndef _FDC_IO_H
+#define _FDC_IO_H
+
+/*
+ * 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.h,v $
+ * $Revision: 1.3 $
+ * $Date: 1997/10/05 19:18:06 $
+ *
+ * This file contains the declarations for the low level
+ * functions that communicate with the floppy disk controller,
+ * for the QIC-40/80/3010/3020 floppy-tape driver "ftape" for
+ * Linux.
+ */
+
+#include <linux/fdreg.h>
+
+#include "../lowlevel/ftape-bsm.h"
+
+#define FDC_SK_BIT (0x20)
+#define FDC_MT_BIT (0x80)
+
+#define FDC_READ (FD_READ & ~(FDC_SK_BIT | FDC_MT_BIT))
+#define FDC_WRITE (FD_WRITE & ~FDC_MT_BIT)
+#define FDC_READ_DELETED (0x4c)
+#define FDC_WRITE_DELETED (0x49)
+#define FDC_VERIFY (0x56)
+#define FDC_READID (0x4a)
+#define FDC_SENSED (0x04)
+#define FDC_SENSEI (FD_SENSEI)
+#define FDC_FORMAT (FD_FORMAT)
+#define FDC_RECAL (FD_RECALIBRATE)
+#define FDC_SEEK (FD_SEEK)
+#define FDC_SPECIFY (FD_SPECIFY)
+#define FDC_RECALIBR (FD_RECALIBRATE)
+#define FDC_VERSION (FD_VERSION)
+#define FDC_PERPEND (FD_PERPENDICULAR)
+#define FDC_DUMPREGS (FD_DUMPREGS)
+#define FDC_LOCK (FD_LOCK)
+#define FDC_UNLOCK (FD_UNLOCK)
+#define FDC_CONFIGURE (FD_CONFIGURE)
+#define FDC_DRIVE_SPEC (0x8e) /* i82078 has this (any others?) */
+#define FDC_PARTID (0x18) /* i82078 has this */
+#define FDC_SAVE (0x2e) /* i82078 has this (any others?) */
+#define FDC_RESTORE (0x4e) /* i82078 has this (any others?) */
+
+#define FDC_STATUS_MASK (STATUS_BUSY | STATUS_DMA | STATUS_DIR | STATUS_READY)
+#define FDC_DATA_READY (STATUS_READY)
+#define FDC_DATA_OUTPUT (STATUS_DIR)
+#define FDC_DATA_READY_MASK (STATUS_READY | STATUS_DIR)
+#define FDC_DATA_OUT_READY (STATUS_READY | STATUS_DIR)
+#define FDC_DATA_IN_READY (STATUS_READY)
+#define FDC_BUSY (STATUS_BUSY)
+#define FDC_CLK48_BIT (0x80)
+#define FDC_SEL3V_BIT (0x40)
+
+#define ST0_INT_MASK (ST0_INTR)
+#define FDC_INT_NORMAL (ST0_INTR & 0x00)
+#define FDC_INT_ABNORMAL (ST0_INTR & 0x40)
+#define FDC_INT_INVALID (ST0_INTR & 0x80)
+#define FDC_INT_READYCH (ST0_INTR & 0xC0)
+#define ST0_SEEK_END (ST0_SE)
+#define ST3_TRACK_0 (ST3_TZ)
+
+#define FDC_RESET_NOT (0x04)
+#define FDC_DMA_MODE (0x08)
+#define FDC_MOTOR_0 (0x10)
+#define FDC_MOTOR_1 (0x20)
+
+typedef struct {
+ void (**hook) (void); /* our wedge into the isr */
+ enum {
+ no_fdc, i8272, i82077, i82077AA, fc10,
+ i82078, i82078_1
+ } type; /* FDC type */
+ unsigned int irq; /* FDC irq nr */
+ unsigned int dma; /* FDC dma channel nr */
+ __u16 sra; /* Status register A (PS/2 only) */
+ __u16 srb; /* Status register B (PS/2 only) */
+ __u16 dor; /* Digital output register */
+ __u16 tdr; /* Tape Drive Register (82077SL-1 &
+ 82078 only) */
+ __u16 msr; /* Main Status Register */
+ __u16 dsr; /* Datarate Select Register (8207x only) */
+ __u16 fifo; /* Data register / Fifo on 8207x */
+ __u16 dir; /* Digital Input Register */
+ __u16 ccr; /* Configuration Control Register */
+ __u16 dor2; /* Alternate dor on MACH-2 controller,
+ also used with FC-10, meaning unknown */
+} fdc_config_info;
+
+typedef enum {
+ fdc_data_rate_250 = 2,
+ fdc_data_rate_300 = 1, /* any fdc in default configuration */
+ fdc_data_rate_500 = 0,
+ fdc_data_rate_1000 = 3,
+ fdc_data_rate_2000 = 1, /* i82078-1: when using Data Rate Table #2 */
+} fdc_data_rate_type;
+
+typedef enum {
+ fdc_idle = 0,
+ fdc_reading_data = FDC_READ,
+ fdc_seeking = FDC_SEEK,
+ fdc_writing_data = FDC_WRITE,
+ fdc_deleting = FDC_WRITE_DELETED,
+ fdc_reading_id = FDC_READID,
+ fdc_recalibrating = FDC_RECAL,
+ fdc_formatting = FDC_FORMAT,
+ fdc_verifying = FDC_VERIFY
+} fdc_mode_enum;
+
+typedef enum {
+ waiting = 0,
+ reading,
+ writing,
+ formatting,
+ verifying,
+ deleting,
+ done,
+ error,
+ mmapped,
+} buffer_state_enum;
+
+typedef struct {
+ __u8 *address;
+ volatile buffer_state_enum status;
+ volatile __u8 *ptr;
+ volatile unsigned int bytes;
+ volatile unsigned int segment_id;
+
+ /* bitmap for remainder of segment not yet handled.
+ * one bit set for each bad sector that must be skipped.
+ */
+ volatile SectorMap bad_sector_map;
+
+ /* bitmap with bad data blocks in data buffer.
+ * the errors in this map may be retried.
+ */
+ volatile SectorMap soft_error_map;
+
+ /* bitmap with bad data blocks in data buffer
+ * the errors in this map may not be retried.
+ */
+ volatile SectorMap hard_error_map;
+
+ /* retry counter for soft errors.
+ */
+ volatile int retry;
+
+ /* sectors to skip on retry ???
+ */
+ volatile unsigned int skip;
+
+ /* nr of data blocks in data buffer
+ */
+ volatile unsigned int data_offset;
+
+ /* offset in segment for first sector to be handled.
+ */
+ volatile unsigned int sector_offset;
+
+ /* size of cluster of good sectors to be handled.
+ */
+ volatile unsigned int sector_count;
+
+ /* size of remaining part of segment to be handled.
+ */
+ volatile unsigned int remaining;
+
+ /* points to next segment (contiguous) to be handled,
+ * or is zero if no read-ahead is allowed.
+ */
+ volatile unsigned int next_segment;
+
+ /* flag being set if deleted data was read.
+ */
+ volatile int deleted;
+
+ /* floppy coordinates of first sector in segment */
+ volatile __u8 head;
+ volatile __u8 cyl;
+ volatile __u8 sect;
+
+ /* gap to use when formatting */
+ __u8 gap3;
+ /* flag set when buffer is mmaped */
+ int mmapped;
+} buffer_struct;
+
+/*
+ * fdc-io.c defined public variables
+ */
+extern volatile fdc_mode_enum fdc_mode;
+extern int fdc_setup_error; /* outdated ??? */
+extern wait_queue_head_t ftape_wait_intr;
+extern volatile int ftape_current_cylinder; /* track nr FDC thinks we're on */
+extern volatile __u8 fdc_head; /* FDC head */
+extern volatile __u8 fdc_cyl; /* FDC track */
+extern volatile __u8 fdc_sect; /* FDC sector */
+extern fdc_config_info fdc; /* FDC hardware configuration */
+
+extern unsigned int ft_fdc_base;
+extern unsigned int ft_fdc_irq;
+extern unsigned int ft_fdc_dma;
+extern unsigned int ft_fdc_threshold;
+extern unsigned int ft_fdc_rate_limit;
+extern int ft_probe_fc10;
+extern int ft_mach2;
+/*
+ * fdc-io.c defined public functions
+ */
+extern void fdc_catch_stray_interrupts(int count);
+extern int fdc_ready_wait(unsigned int timeout);
+extern int fdc_command(const __u8 * cmd_data, int cmd_len);
+extern int fdc_result(__u8 * res_data, int res_len);
+extern int fdc_interrupt_wait(unsigned int time);
+extern int fdc_seek(int track);
+extern int fdc_sense_drive_status(int *st3);
+extern void fdc_motor(int motor);
+extern void fdc_reset(void);
+extern void fdc_disable(void);
+extern int fdc_fifo_threshold(__u8 threshold,
+ int *fifo_state, int *lock_state, int *fifo_thr);
+extern void fdc_wait_calibrate(void);
+extern int fdc_sense_interrupt_status(int *st0, int *current_cylinder);
+extern void fdc_save_drive_specs(void);
+extern void fdc_restore_drive_specs(void);
+extern int fdc_set_data_rate(int rate);
+extern void fdc_set_write_precomp(int precomp);
+extern int fdc_release_irq_and_dma(void);
+extern void fdc_release_regions(void);
+extern int fdc_init(void);
+extern int fdc_setup_read_write(buffer_struct * buff, __u8 operation);
+extern int fdc_setup_formatting(buffer_struct * buff);
+#endif
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