--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _LINUX_FD_H
+#define _LINUX_FD_H
+
+#include <linux/ioctl.h>
+
+
+/* New file layout: Now the ioctl definitions immediately follow the
+ * definitions of the structures that they use */
+
+/*
+ * Geometry
+ */
+struct floppy_struct {
+ unsigned int size, /* nr of sectors total */
+ sect, /* sectors per track */
+ head, /* nr of heads */
+ track, /* nr of tracks */
+ stretch; /* bit 0 !=0 means double track steps */
+ /* bit 1 != 0 means swap sides */
+ /* bits 2..9 give the first sector */
+ /* number (the LSB is flipped) */
+#define FD_STRETCH 1
+#define FD_SWAPSIDES 2
+#define FD_ZEROBASED 4
+#define FD_SECTBASEMASK 0x3FC
+#define FD_MKSECTBASE(s) (((s) ^ 1) << 2)
+#define FD_SECTBASE(floppy) ((((floppy)->stretch & FD_SECTBASEMASK) >> 2) ^ 1)
+
+ unsigned char gap, /* gap1 size */
+
+ rate, /* data rate. |= 0x40 for perpendicular */
+#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
+
+ spec1, /* stepping rate, head unload time */
+ fmt_gap; /* gap2 size */
+ const char * name; /* used only for predefined formats */
+};
+
+
+/* commands needing write access have 0x40 set */
+/* commands needing super user access have 0x80 set */
+
+#define FDCLRPRM _IO(2, 0x41)
+/* clear user-defined parameters */
+
+#define FDSETPRM _IOW(2, 0x42, struct floppy_struct)
+#define FDSETMEDIAPRM FDSETPRM
+/* set user-defined parameters for current media */
+
+#define FDDEFPRM _IOW(2, 0x43, struct floppy_struct)
+#define FDGETPRM _IOR(2, 0x04, struct floppy_struct)
+#define FDDEFMEDIAPRM FDDEFPRM
+#define FDGETMEDIAPRM FDGETPRM
+/* set/get disk parameters */
+
+
+#define FDMSGON _IO(2,0x45)
+#define FDMSGOFF _IO(2,0x46)
+/* issue/don't issue kernel messages on media type change */
+
+
+/*
+ * Formatting (obsolete)
+ */
+#define FD_FILL_BYTE 0xF6 /* format fill byte. */
+
+struct format_descr {
+ unsigned int device,head,track;
+};
+
+#define FDFMTBEG _IO(2,0x47)
+/* begin formatting a disk */
+#define FDFMTTRK _IOW(2,0x48, struct format_descr)
+/* format the specified track */
+#define FDFMTEND _IO(2,0x49)
+/* end formatting a disk */
+
+
+/*
+ * Error thresholds
+ */
+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;
+
+};
+
+#define FDSETEMSGTRESH _IO(2,0x4a)
+/* set fdc error reporting threshold */
+
+#define FDFLUSH _IO(2,0x4b)
+/* flush buffers for media; either for verifying media, or for
+ * handling a media change without closing the file descriptor */
+
+#define FDSETMAXERRS _IOW(2, 0x4c, struct floppy_max_errors)
+#define FDGETMAXERRS _IOR(2, 0x0e, struct floppy_max_errors)
+/* set/get abortion and read_track threshold. See also floppy_drive_params
+ * structure */
+
+
+typedef char floppy_drive_name[16];
+#define FDGETDRVTYP _IOR(2, 0x0f, floppy_drive_name)
+/* get drive type: 5 1/4 or 3 1/2 */
+
+
+/*
+ * Drive parameters (user modifiable)
+ */
+struct floppy_drive_params {
+ signed 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 (expressed
+ * 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
+#define FD_INVERTED_DCL 0x80 /* must be 0x80, because of hardware
+ considerations */
+
+ 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 */
+ FD_OPEN_SHOULD_FAIL_BIT
+};
+
+#define FDSETDRVPRM _IOW(2, 0x90, struct floppy_drive_params)
+#define FDGETDRVPRM _IOR(2, 0x11, struct floppy_drive_params)
+/* set/get drive parameters */
+
+
+/*
+ * Current drive state (not directly modifiable by user, readonly)
+ */
+struct floppy_drive_struct {
+ unsigned long flags;
+/* 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)
+
+ 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;
+ unsigned long last_checked; /* when was the drive last checked for a disk
+ * change? */
+
+ char *dmabuf;
+ int bufblocks;
+};
+
+#define FDGETDRVSTAT _IOR(2, 0x12, struct floppy_drive_struct)
+#define FDPOLLDRVSTAT _IOR(2, 0x13, struct floppy_drive_struct)
+/* get drive state: GET returns the cached state, POLL polls for new state */
+
+
+/*
+ * reset FDC
+ */
+enum reset_mode {
+ FD_RESET_IF_NEEDED, /* reset only if the reset flags is set */
+ FD_RESET_IF_RAWCMD, /* obsolete */
+ FD_RESET_ALWAYS /* reset always */
+};
+#define FDRESET _IO(2, 0x54)
+
+
+/*
+ * FDC state
+ */
+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;
+ unsigned long 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;
+ unsigned int driver_version; /* version code for floppy driver */
+#define FD_DRIVER_VERSION 0x100
+/* user programs using the floppy API should use floppy_fdc_state to
+ * get the version number of the floppy driver that they are running
+ * on. If this version number is bigger than the one compiled into the
+ * user program (the FD_DRIVER_VERSION define), it should be prepared
+ * to bigger structures
+ */
+
+ unsigned char track[4];
+ /* Position of the heads of the 4 units attached to this FDC,
+ * as stored on the FDC. In the future, the position as stored
+ * on the FDC might not agree with the actual physical
+ * position of these drive heads. By allowing such
+ * disagreement, it will be possible to reset the FDC without
+ * incurring the expensive cost of repositioning all heads.
+ * Right now, these positions are hard wired to 0. */
+
+};
+
+#define FDGETFDCSTAT _IOR(2, 0x15, struct floppy_fdc_state)
+
+
+/*
+ * Asynchronous Write error tracking
+ */
+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 */
+};
+
+#define FDWERRORCLR _IO(2, 0x56)
+/* clear write error and badness information */
+#define FDWERRORGET _IOR(2, 0x17, struct floppy_write_errors)
+/* get write error and badness information */
+
+
+/*
+ * Raw commands
+ */
+/* new interface flag: now we can do them in batches */
+#define FDHAVEBATCHEDRAWCMD
+
+struct floppy_raw_cmd {
+ unsigned int flags;
+#define FD_RAW_READ 1
+#define FD_RAW_WRITE 2
+#define FD_RAW_NO_MOTOR 4
+#define FD_RAW_DISK_CHANGE 4 /* out: disk change flag was set */
+#define FD_RAW_INTR 8 /* wait for an interrupt */
+#define FD_RAW_SPIN 0x10 /* spin up the disk for this command */
+#define FD_RAW_NO_MOTOR_AFTER 0x20 /* switch the motor off after command
+ * completion */
+#define FD_RAW_NEED_DISK 0x40 /* this command needs a disk to be present */
+#define FD_RAW_NEED_SEEK 0x80 /* this command uses an implied seek (soft) */
+
+/* more "in" flags */
+#define FD_RAW_MORE 0x100 /* more records follow */
+#define FD_RAW_STOP_IF_FAILURE 0x200 /* stop if we encounter a failure */
+#define FD_RAW_STOP_IF_SUCCESS 0x400 /* stop if command successful */
+#define FD_RAW_SOFTFAILURE 0x800 /* consider the return value for failure
+ * detection too */
+
+/* more "out" flags */
+#define FD_RAW_FAILURE 0x10000 /* command sent to fdc, fdc returned error */
+#define FD_RAW_HARDFAILURE 0x20000 /* fdc had to be reset, or timed out */
+
+ void *data;
+ char *kernel_data; /* location of data buffer in the kernel */
+ struct floppy_raw_cmd *next; /* used for chaining of raw cmd's
+ * within the kernel */
+ long length; /* in: length of dma transfer. out: remaining bytes */
+ long phys_length; /* physical length, if different from dma length */
+ int buffer_length; /* length of allocated buffer */
+
+ unsigned char rate;
+ unsigned char cmd_count;
+ unsigned char cmd[16];
+ unsigned char reply_count;
+ unsigned char reply[16];
+ int track;
+ int resultcode;
+
+ int reserved1;
+ int reserved2;
+};
+
+#define FDRAWCMD _IO(2, 0x58)
+/* send a raw command to the fdc. Structure size not included, because of
+ * batches */
+
+#define FDTWADDLE _IO(2, 0x59)
+/* flicker motor-on bit before reading a sector. Experimental */
+
+
+#define FDEJECT _IO(2, 0x5a)
+/* eject the disk */
+
+
+
+#endif /* _LINUX_FD_H */
projects / cross.git / blobdiff