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kernel/linux-imx6_3.14.28/include/linux/amifd.h 1.95 KB
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  #ifndef _AMIFD_H
  #define _AMIFD_H
  
  /* Definitions for the Amiga floppy driver */
  
  #include <linux/fd.h>
  
  #define FD_MAX_UNITS    4	/* Max. Number of drives */
  #define FLOPPY_MAX_SECTORS	22	/* Max. Number of sectors per track */
  
  #ifndef ASSEMBLER
  
  struct fd_data_type {
      char *name;			/* description of data type */
      int sects;			/* sectors per track */
  #ifdef __STDC__
      int (*read_fkt)(int);
      void (*write_fkt)(int);
  #else
      int (*read_fkt)();		/* read whole track */
      void (*write_fkt)();		/* write whole track */
  #endif
  };
  
  /*
  ** Floppy type descriptions
  */
  
  struct fd_drive_type {
      unsigned long code;		/* code returned from drive */
      char *name;			/* description of drive */
      unsigned int tracks;	/* number of tracks */
      unsigned int heads;		/* number of heads */
      unsigned int read_size;	/* raw read size for one track */
      unsigned int write_size;	/* raw write size for one track */
      unsigned int sect_mult;	/* sectors and gap multiplier (HD = 2) */
      unsigned int precomp1;	/* start track for precomp 1 */
      unsigned int precomp2;	/* start track for precomp 2 */
      unsigned int step_delay;	/* time (in ms) for delay after step */
      unsigned int settle_time;	/* time to settle after dir change */
      unsigned int side_time;	/* time needed to change sides */
  };
  
  struct amiga_floppy_struct {
      struct fd_drive_type *type;	/* type of floppy for this unit */
      struct fd_data_type *dtype;	/* type of floppy for this unit */
      int track;			/* current track (-1 == unknown) */
      unsigned char *trackbuf;    /* current track (kmaloc()'d */
  
      int blocks;			/* total # blocks on disk */
  
      int changed;		/* true when not known */
      int disk;			/* disk in drive (-1 == unknown) */
      int motor;			/* true when motor is at speed */
      int busy;			/* true when drive is active */
      int dirty;			/* true when trackbuf is not on disk */
      int status;			/* current error code for unit */
      struct gendisk *gendisk;
  };
  #endif
  
  #endif