375 lines
11 KiB
C
375 lines
11 KiB
C
#ifndef _LINUX_FD_H
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#define _LINUX_FD_H
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#include <linux/ioctl.h>
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#include <linux/compiler.h>
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/* New file layout: Now the ioctl definitions immediately follow the
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* definitions of the structures that they use */
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/*
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* Geometry
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*/
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struct floppy_struct {
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unsigned int size, /* nr of sectors total */
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sect, /* sectors per track */
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head, /* nr of heads */
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track, /* nr of tracks */
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stretch; /* !=0 means double track steps */
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#define FD_STRETCH 1
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#define FD_SWAPSIDES 2
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#define FD_ZEROBASED 4
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unsigned char gap, /* gap1 size */
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rate, /* data rate. |= 0x40 for perpendicular */
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#define FD_2M 0x4
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#define FD_SIZECODEMASK 0x38
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#define FD_SIZECODE(floppy) (((((floppy)->rate&FD_SIZECODEMASK)>> 3)+ 2) %8)
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#define FD_SECTSIZE(floppy) ( (floppy)->rate & FD_2M ? \
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512 : 128 << FD_SIZECODE(floppy) )
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#define FD_PERP 0x40
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spec1, /* stepping rate, head unload time */
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fmt_gap; /* gap2 size */
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const char * name; /* used only for predefined formats */
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};
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/* commands needing write access have 0x40 set */
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/* commands needing super user access have 0x80 set */
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#define FDCLRPRM _IO(2, 0x41)
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/* clear user-defined parameters */
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#define FDSETPRM _IOW(2, 0x42, struct floppy_struct)
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#define FDSETMEDIAPRM FDSETPRM
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/* set user-defined parameters for current media */
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#define FDDEFPRM _IOW(2, 0x43, struct floppy_struct)
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#define FDGETPRM _IOR(2, 0x04, struct floppy_struct)
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#define FDDEFMEDIAPRM FDDEFPRM
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#define FDGETMEDIAPRM FDGETPRM
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/* set/get disk parameters */
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#define FDMSGON _IO(2,0x45)
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#define FDMSGOFF _IO(2,0x46)
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/* issue/don't issue kernel messages on media type change */
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/*
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* Formatting (obsolete)
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*/
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#define FD_FILL_BYTE 0xF6 /* format fill byte. */
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struct format_descr {
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unsigned int device,head,track;
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};
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#define FDFMTBEG _IO(2,0x47)
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/* begin formatting a disk */
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#define FDFMTTRK _IOW(2,0x48, struct format_descr)
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/* format the specified track */
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#define FDFMTEND _IO(2,0x49)
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/* end formatting a disk */
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/*
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* Error thresholds
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*/
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struct floppy_max_errors {
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unsigned int
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abort, /* number of errors to be reached before aborting */
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read_track, /* maximal number of errors permitted to read an
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* entire track at once */
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reset, /* maximal number of errors before a reset is tried */
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recal, /* maximal number of errors before a recalibrate is
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* tried */
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/*
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* Threshold for reporting FDC errors to the console.
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* Setting this to zero may flood your screen when using
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* ultra cheap floppies ;-)
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*/
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reporting;
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};
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#define FDSETEMSGTRESH _IO(2,0x4a)
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/* set fdc error reporting threshold */
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#define FDFLUSH _IO(2,0x4b)
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/* flush buffers for media; either for verifying media, or for
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* handling a media change without closing the file descriptor */
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#define FDSETMAXERRS _IOW(2, 0x4c, struct floppy_max_errors)
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#define FDGETMAXERRS _IOR(2, 0x0e, struct floppy_max_errors)
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/* set/get abortion and read_track threshold. See also floppy_drive_params
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* structure */
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typedef char floppy_drive_name[16];
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#define FDGETDRVTYP _IOR(2, 0x0f, floppy_drive_name)
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/* get drive type: 5 1/4 or 3 1/2 */
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/*
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* Drive parameters (user modifiable)
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*/
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struct floppy_drive_params {
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signed char cmos; /* CMOS type */
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/* Spec2 is (HLD<<1 | ND), where HLD is head load time (1=2ms, 2=4 ms
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* etc) and ND is set means no DMA. Hardcoded to 6 (HLD=6ms, use DMA).
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*/
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unsigned long max_dtr; /* Step rate, usec */
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unsigned long hlt; /* Head load/settle time, msec */
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unsigned long hut; /* Head unload time (remnant of
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* 8" drives) */
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unsigned long srt; /* Step rate, usec */
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unsigned long spinup; /* time needed for spinup (expressed
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* in jiffies) */
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unsigned long spindown; /* timeout needed for spindown */
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unsigned char spindown_offset; /* decides in which position the disk
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* will stop */
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unsigned char select_delay; /* delay to wait after select */
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unsigned char rps; /* rotations per second */
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unsigned char tracks; /* maximum number of tracks */
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unsigned long timeout; /* timeout for interrupt requests */
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unsigned char interleave_sect; /* if there are more sectors, use
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* interleave */
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struct floppy_max_errors max_errors;
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char flags; /* various flags, including ftd_msg */
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/*
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* Announce successful media type detection and media information loss after
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* disk changes.
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* Also used to enable/disable printing of overrun warnings.
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*/
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#define FTD_MSG 0x10
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#define FD_BROKEN_DCL 0x20
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#define FD_DEBUG 0x02
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#define FD_SILENT_DCL_CLEAR 0x4
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#define FD_INVERTED_DCL 0x80 /* must be 0x80, because of hardware
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considerations */
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char read_track; /* use readtrack during probing? */
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/*
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* Auto-detection. Each drive type has eight formats which are
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* used in succession to try to read the disk. If the FDC cannot lock onto
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* the disk, the next format is tried. This uses the variable 'probing'.
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*/
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short autodetect[8]; /* autodetected formats */
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int checkfreq; /* how often should the drive be checked for disk
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* changes */
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int native_format; /* native format of this drive */
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};
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enum {
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FD_NEED_TWADDLE_BIT, /* more magic */
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FD_VERIFY_BIT, /* inquire for write protection */
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FD_DISK_NEWCHANGE_BIT, /* change detected, and no action undertaken yet
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* to clear media change status */
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FD_UNUSED_BIT,
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FD_DISK_CHANGED_BIT, /* disk has been changed since last i/o */
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FD_DISK_WRITABLE_BIT /* disk is writable */
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};
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#define FDSETDRVPRM _IOW(2, 0x90, struct floppy_drive_params)
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#define FDGETDRVPRM _IOR(2, 0x11, struct floppy_drive_params)
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/* set/get drive parameters */
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/*
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* Current drive state (not directly modifiable by user, readonly)
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*/
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struct floppy_drive_struct {
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unsigned long flags;
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/* values for these flags */
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#define FD_NEED_TWADDLE (1 << FD_NEED_TWADDLE_BIT)
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#define FD_VERIFY (1 << FD_VERIFY_BIT)
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#define FD_DISK_NEWCHANGE (1 << FD_DISK_NEWCHANGE_BIT)
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#define FD_DISK_CHANGED (1 << FD_DISK_CHANGED_BIT)
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#define FD_DISK_WRITABLE (1 << FD_DISK_WRITABLE_BIT)
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unsigned long spinup_date;
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unsigned long select_date;
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unsigned long first_read_date;
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short probed_format;
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short track; /* current track */
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short maxblock; /* id of highest block read */
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short maxtrack; /* id of highest half track read */
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int generation; /* how many diskchanges? */
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/*
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* (User-provided) media information is _not_ discarded after a media change
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* if the corresponding keep_data flag is non-zero. Positive values are
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* decremented after each probe.
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*/
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int keep_data;
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/* Prevent "aliased" accesses. */
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int fd_ref;
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int fd_device;
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unsigned long last_checked; /* when was the drive last checked for a disk
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* change? */
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char *dmabuf;
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int bufblocks;
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};
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#define FDGETDRVSTAT _IOR(2, 0x12, struct floppy_drive_struct)
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#define FDPOLLDRVSTAT _IOR(2, 0x13, struct floppy_drive_struct)
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/* get drive state: GET returns the cached state, POLL polls for new state */
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/*
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* reset FDC
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*/
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enum reset_mode {
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FD_RESET_IF_NEEDED, /* reset only if the reset flags is set */
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FD_RESET_IF_RAWCMD, /* obsolete */
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FD_RESET_ALWAYS /* reset always */
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};
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#define FDRESET _IO(2, 0x54)
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/*
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* FDC state
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*/
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struct floppy_fdc_state {
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int spec1; /* spec1 value last used */
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int spec2; /* spec2 value last used */
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int dtr;
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unsigned char version; /* FDC version code */
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unsigned char dor;
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unsigned long address; /* io address */
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unsigned int rawcmd:2;
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unsigned int reset:1;
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unsigned int need_configure:1;
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unsigned int perp_mode:2;
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unsigned int has_fifo:1;
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unsigned int driver_version; /* version code for floppy driver */
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#define FD_DRIVER_VERSION 0x100
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/* user programs using the floppy API should use floppy_fdc_state to
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* get the version number of the floppy driver that they are running
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* on. If this version number is bigger than the one compiled into the
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* user program (the FD_DRIVER_VERSION define), it should be prepared
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* to bigger structures
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*/
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unsigned char track[4];
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/* Position of the heads of the 4 units attached to this FDC,
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* as stored on the FDC. In the future, the position as stored
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* on the FDC might not agree with the actual physical
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* position of these drive heads. By allowing such
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* disagreement, it will be possible to reset the FDC without
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* incurring the expensive cost of repositioning all heads.
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* Right now, these positions are hard wired to 0. */
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};
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#define FDGETFDCSTAT _IOR(2, 0x15, struct floppy_fdc_state)
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/*
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* Asynchronous Write error tracking
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*/
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struct floppy_write_errors {
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/* Write error logging.
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*
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* These fields can be cleared with the FDWERRORCLR ioctl.
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* Only writes that were attempted but failed due to a physical media
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* error are logged. write(2) calls that fail and return an error code
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* to the user process are not counted.
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*/
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unsigned int write_errors; /* number of physical write errors
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* encountered */
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/* position of first and last write errors */
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unsigned long first_error_sector;
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int first_error_generation;
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unsigned long last_error_sector;
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int last_error_generation;
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unsigned int badness; /* highest retry count for a read or write
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* operation */
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};
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#define FDWERRORCLR _IO(2, 0x56)
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/* clear write error and badness information */
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#define FDWERRORGET _IOR(2, 0x17, struct floppy_write_errors)
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/* get write error and badness information */
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/*
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* Raw commands
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*/
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/* new interface flag: now we can do them in batches */
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#define FDHAVEBATCHEDRAWCMD
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struct floppy_raw_cmd {
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unsigned int flags;
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#define FD_RAW_READ 1
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#define FD_RAW_WRITE 2
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#define FD_RAW_NO_MOTOR 4
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#define FD_RAW_DISK_CHANGE 4 /* out: disk change flag was set */
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#define FD_RAW_INTR 8 /* wait for an interrupt */
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#define FD_RAW_SPIN 0x10 /* spin up the disk for this command */
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#define FD_RAW_NO_MOTOR_AFTER 0x20 /* switch the motor off after command
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* completion */
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#define FD_RAW_NEED_DISK 0x40 /* this command needs a disk to be present */
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#define FD_RAW_NEED_SEEK 0x80 /* this command uses an implied seek (soft) */
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/* more "in" flags */
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#define FD_RAW_MORE 0x100 /* more records follow */
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#define FD_RAW_STOP_IF_FAILURE 0x200 /* stop if we encounter a failure */
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#define FD_RAW_STOP_IF_SUCCESS 0x400 /* stop if command successful */
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#define FD_RAW_SOFTFAILURE 0x800 /* consider the return value for failure
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* detection too */
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/* more "out" flags */
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#define FD_RAW_FAILURE 0x10000 /* command sent to fdc, fdc returned error */
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#define FD_RAW_HARDFAILURE 0x20000 /* fdc had to be reset, or timed out */
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void __user *data;
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char *kernel_data; /* location of data buffer in the kernel */
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struct floppy_raw_cmd *next; /* used for chaining of raw cmd's
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* within the kernel */
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long length; /* in: length of dma transfer. out: remaining bytes */
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long phys_length; /* physical length, if different from dma length */
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int buffer_length; /* length of allocated buffer */
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unsigned char rate;
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unsigned char cmd_count;
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unsigned char cmd[16];
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unsigned char reply_count;
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unsigned char reply[16];
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int track;
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int resultcode;
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int reserved1;
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int reserved2;
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};
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#define FDRAWCMD _IO(2, 0x58)
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/* send a raw command to the fdc. Structure size not included, because of
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* batches */
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#define FDTWADDLE _IO(2, 0x59)
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/* flicker motor-on bit before reading a sector. Experimental */
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#define FDEJECT _IO(2, 0x5a)
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/* eject the disk */
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#endif
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