Import of Linus's Linux 1.1.68

1 files changed, 250 insertions, 0 deletions

diff --git a/include/linux/fd.h b/include/linux/fd.h
new file mode 100644
index 000000000..42ec48cf8
--- /dev/null
+++ b/include/linux/fd.h
@@ -0,0 +1,250 @@
+#ifndef _LINUX_FD_H
+#define _LINUX_FD_H
+
+#define FDCLRPRM 0 /* clear user-defined parameters */
+#define FDSETPRM 1 /* set user-defined parameters for current media */
+#define FDSETMEDIAPRM 1
+#define FDDEFPRM 2 /* set user-defined parameters until explicitly cleared */
+#define FDDEFMEDIAPRM 2
+#define FDGETPRM 3 /* get disk parameters */
+#define FDGETMEDIAPRM 3
+#define	FDMSGON  4 /* issue kernel messages on media type change */
+#define	FDMSGOFF 5 /* don't issue kernel messages on media type change */
+#define FDFMTBEG 6 /* begin formatting a disk */
+#define	FDFMTTRK 7 /* format the specified track */
+#define FDFMTEND 8 /* end formatting a disk */
+#define FDSETEMSGTRESH	10	/* set fdc error reporting threshold */
+#define FDFLUSH  11 /* flush buffers for media; either for verifying media, or for
+                       handling a media change without closing the file
+		       descriptor */
+#define FDSETMAXERRS 12 /* set abortion and read_track threshold */
+#define FDGETMAXERRS 14 /* get abortion and read_track threshold */
+#define FDGETDRVTYP 16          /* get drive type: 5 1/4 or 3 1/2 */
+
+#define FDSETDRVPRM 20 /* set drive parameters */
+#define FDGETDRVPRM 21 /* get drive parameters */
+#define FDGETDRVSTAT 22 /* get drive state */
+#define FDPOLLDRVSTAT 23 /* get drive state */
+#define FDRESET 24 /* reset FDC */
+
+#define FD_RESET_IF_NEEDED 0
+#define FD_RESET_IF_RAWCMD 1
+#define FD_RESET_ALWAYS 2
+
+#define FDGETFDCSTAT 25 /* get fdc state */
+#define FDWERRORCLR  27 /* clear write error and badness information */
+#define FDWERRORGET  28 /* get write error and badness information */
+
+#define FDRAWCMD 30 /* send a raw command to the fdc */
+
+#define FDTWADDLE 40 /* flicker motor-on bit before reading a sector */
+
+/*
+ * Maximum number of sectors in a track buffer. Track buffering is disabled
+ * if tracks are bigger.
+ */
+#define MAX_BUFFER_SECTORS 24 /* was 18 -bb */
+
+#define FD_FILL_BYTE 0xF6 /* format fill byte */
+
+#define FD_2M 0x4
+#define FD_SIZECODEMASK 0x38
+#define FD_SIZECODE(floppy) (((((floppy)->rate&FD_SIZECODEMASK)>> 3)+ 2) %8)
+#define FD_SECTSIZE(floppy) ( (floppy)->rate & FD_2M ? \
+			     512 : 128 << FD_SIZECODE(floppy) )
+#define FD_PERP 0x40
+
+#ifndef __ASSEMBLY__
+/* the following structure is used by FDSETPRM, FDDEFPRM and FDGETPRM */
+struct floppy_struct {
+	unsigned int	size,		/* nr of sectors total */
+			sect,		/* sectors per track */
+			head,		/* nr of heads */
+			track,		/* nr of tracks */
+			stretch;	/* !=0 means double track steps */
+	unsigned char	gap,		/* gap1 size */
+			rate,		/* data rate. |= 0x40 for perpendicular */
+			spec1,		/* stepping rate, head unload time */
+			fmt_gap;	/* gap2 size */
+	char 	      * name; /* used only for predefined formats */
+};
+
+struct format_descr {
+	unsigned int device,head,track;
+};
+
+struct floppy_max_errors {
+  unsigned int
+	  abort,      /* number of errors to be reached before aborting */
+	  read_track, /* maximal number of errors permitted to read an
+		       * entire track at once */
+	  reset,      /* maximal number of errors before a reset is tried */
+	  recal,      /* maximal number of errors before a recalibrate is
+		       * tried */
+
+	  /*
+	   * Threshold for reporting FDC errors to the console.
+	   * Setting this to zero may flood your screen when using
+	   * ultra cheap floppies ;-)
+	   */
+	  reporting;
+
+};
+
+/* the following structure is used by FDSETDRVPRM and FDGETDRVPRM */
+struct floppy_drive_params {
+  char cmos;			/* cmos type */
+
+  /* Spec2 is (HLD<<1 | ND), where HLD is head load time (1=2ms, 2=4 ms etc)
+   * and ND is set means no DMA. Hardcoded to 6 (HLD=6ms, use DMA).
+   */
+  unsigned long max_dtr;	/* Step rate, usec */
+  unsigned long hlt;		/* Head load/settle time, msec */
+  unsigned long hut;		/* Head unload time (remnant of 8" drives) */
+  unsigned long srt;		/* Step rate, usec */
+
+  unsigned long spinup;		/* time needed for spinup ( in jiffies) */
+  unsigned long spindown;	/* timeout needed for spindown */
+  unsigned char spindown_offset;/* decides in which position the disk
+				 * will stop */
+  unsigned char select_delay;	/* delay to wait after select */
+  unsigned char rps;	       	/* rotations per second */
+  unsigned char tracks;	       	/* maximum number of tracks */
+  unsigned long timeout;	/* timeout for interrupt requests */
+
+  unsigned char interleave_sect;/* if there are more sectors, use interleave */
+
+  struct floppy_max_errors max_errors;
+
+  char flags;			/* various flags, including ftd_msg */
+/*
+ * Announce successful media type detection and media information loss after
+ * disk changes.
+ * Also used to enable/disable printing of overrun warnings.
+ */
+
+#define FTD_MSG 0x10
+#define FD_BROKEN_DCL 0x20
+#define FD_DEBUG 0x02
+#define FD_SILENT_DCL_CLEAR 0x4
+
+  char read_track;		/* use readtrack during probing? */
+
+/*
+ * Auto-detection. Each drive type has eight formats which are
+ * used in succession to try to read the disk. If the FDC cannot lock onto
+ * the disk, the next format is tried. This uses the variable 'probing'.
+ */
+  short autodetect[8];		/* autodetected formats */
+
+  int checkfreq; /* how often should the drive be checked for disk changes */
+  int native_format; /* native format of this drive */
+};
+
+enum {
+FD_NEED_TWADDLE_BIT, /* more magic */
+FD_VERIFY_BIT, /* inquire for write protection */
+FD_DISK_NEWCHANGE_BIT, /* change detected, and no action undertaken yet to
+			  clear media change status */
+FD_UNUSED_BIT,
+FD_DISK_CHANGED_BIT, /* disk has been changed since last i/o */
+FD_DISK_WRITABLE_BIT /* disk is writable */
+};
+
+/* values for these flags */
+#define FD_NEED_TWADDLE (1 << FD_NEED_TWADDLE_BIT)
+#define FD_VERIFY (1 << FD_VERIFY_BIT)
+#define FD_DISK_NEWCHANGE (1 << FD_DISK_NEWCHANGE_BIT)
+#define FD_DISK_CHANGED (1 << FD_DISK_CHANGED_BIT)
+#define FD_DISK_WRITABLE (1 << FD_DISK_WRITABLE_BIT)
+
+#define FD_DRIVE_PRESENT 0 /* keep fdpatch utils compiling */
+
+struct floppy_drive_struct {
+  signed char flags;
+  unsigned long spinup_date;
+  unsigned long select_date;
+  unsigned long first_read_date;
+  short probed_format;
+  short track; /* current track */
+  short maxblock; /* id of highest block read */
+  short maxtrack; /* id of highest half track read */
+  int generation; /* how many diskchanges? */
+
+/*
+ * (User-provided) media information is _not_ discarded after a media change
+ * if the corresponding keep_data flag is non-zero. Positive values are
+ * decremented after each probe.
+ */
+  int keep_data;
+
+  /* Prevent "aliased" accesses. */
+  int fd_ref;
+  int fd_device;
+  int last_checked; /* when was the drive last checked for a disk change? */
+
+
+};
+
+struct floppy_write_errors {
+  /* Write error logging.
+   *
+   * These fields can be cleared with the FDWERRORCLR ioctl.
+   * Only writes that were attempted but failed due to a physical media
+   * error are logged.  write(2) calls that fail and return an error code
+   * to the user process are not counted.
+   */
+
+  unsigned int write_errors;  /* number of physical write errors encountered */
+
+  /* position of first and last write errors */
+  unsigned long first_error_sector;
+  int           first_error_generation;
+  unsigned long last_error_sector;
+  int           last_error_generation;
+
+  unsigned int badness; /* highest retry count for a read or write operation */
+};
+
+struct floppy_fdc_state {	
+	int spec1; /* spec1 value last used */
+	int spec2; /* spec2 value last used */
+	int dtr;
+	unsigned char version;	/* FDC version code */
+	unsigned char dor;
+	int address; /* io address */
+	unsigned int rawcmd:2;
+	unsigned int reset:1;
+	unsigned int need_configure:1;
+	unsigned int perp_mode:2;
+	unsigned int has_fifo:1;
+};
+
+struct floppy_raw_cmd {
+  void *data;
+  long length;
+
+  unsigned char rate;
+  unsigned char flags;
+  unsigned char cmd_count;
+  unsigned char cmd[9];
+  unsigned char reply_count;
+  unsigned char reply[7];
+  int track;
+};
+#endif
+
+/* meaning of the various bytes */
+
+/* flags */
+#define FD_RAW_READ 1
+#define FD_RAW_WRITE 2
+#define FD_RAW_NO_MOTOR 4
+#define FD_RAW_DISK_CHANGE 4
+#define FD_RAW_INTR 8
+#define FD_RAW_SPIN 16
+#define FD_RAW_NO_MOTOR_AFTER 32
+#define FD_RAW_NEED_DISK 64
+#define FD_RAW_NEED_SEEK 128
+
+#endif