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The following ioctl() requests are available on
the Solaris floppy driver.
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FDDEFGEOCHAR
- IA based systems: This ioctl() forces the floppy driver to restore the diskette
and drive characteristics and geometry, and partition information to default
values based on the device configuration.
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FDGETCHANGE
- The argument is a pointer to an int. This ioctl() returns the status
of the diskette-changed signal from the floppy interface. The following defines
are provided for cohesion.
Note: For IA based systems, use FDGC_DETECTED (which is available only on IA based systems)
instead of FDGC_HISTORY.
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/*
* Used by FDGETCHANGE, returned state of the sense disk change bit.
*/
#define FDGC_HISTORY 0x01 /* disk has changed since last call */
#define FDGC_CURRENT 0x02 /* current state of disk change */
#define FDGC_CURWPROT 0x10 /* current state of write protect */
#define FDGC_DETECTED 0x20 /* previous state of DISK CHANGE */
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-
FDIOGCHAR
- The argument is a pointer to an fd_char
structure (described below). This ioctl() gets
the characteristics of the floppy diskette from the floppy controller.
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FDIOSCHAR
- The argument is a pointer to an fd_char
structure (described below). This ioctl() sets
the characteristics of the floppy diskette for the floppy controller. Typical
values in the fd_char structure for a high density diskette:
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field value
fdc_medium 0
fdc_transfer_rate 500
fdc_ncyl 80
fdc_nhead 2
fdc_sec_size 512
fdc_secptrack 18
fdc_steps -1 { This field doesn't apply. }
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/*
* Floppy characteristics
*/
struct fd_char {
uchar_t fdc_medium; /* equals 1 if floppy is medium density format */
int fdc_transfer_rate; /* transfer rate */
int fdc_ncyl; /* number of cylinders */
int fdc_nhead; /* number of heads */
int fdc_sec_size; /* sector size */
int fdc_secptrack; /* sectors per track */
int fdc_steps; /* no. of steps per data track */
};
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-
FDGETDRIVECHAR
- The argument to this ioctl()
is a pointer to an fd_drive structure (described below).
This ioctl() gets the characteristics of the floppy
drive from the floppy controller.
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FDSETDRIVECHAR
- IA based systems: The argument to
this ioctl() is a pointer to an fd_drive structure (described below). This ioctl()
sets the characteristics of the floppy drive for the floppy controller. Only fdd_steprate, fdd_headsettle, fdd_motoron, and fdd_motoroff are actually used by the floppy
disk driver.
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/*
* Floppy Drive characteristics
*/
struct fd_drive {
int fdd_ejectable; /* does the drive support eject? */
int fdd_maxsearch; /* size of per-unit search table */
int fdd_writeprecomp; /* cyl to start write precompensation */
int fdd_writereduce; /* cyl to start recucing write current */
int fdd_stepwidth; /* width of step pulse in 1 us units */
int fdd_steprate; /* step rate in 100 us units */
int fdd_headsettle; /* delay, in 100 us units */
int fdd_headload; /* delay, in 100 us units */
int fdd_headunload; /* delay, in 100 us units */
int fdd_motoron; /* delay, in 100 ms units */
int fdd_motoroff; /* delay, in 100 ms units */
int fdd_precomplevel; /* bit shift, in nano-secs */
int fdd_pins; /* defines meaning of pin 1, 2, 4 and 34 */
int fdd_flags; /* TRUE READY, Starting Sector #, & Motor On */
};
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-
FDGETSEARCH
- Not available.
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FDSETSEARCH
- Not available.
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FDEJECT
- SPARC: This ioctl() requests the
floppy drive to eject the diskette.
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FDIOCMD
- The argument is a pointer to an fd_cmd
structure (described below). This ioctl() allows
access to the floppy diskette using the floppy device driver. Only the FDCMD_WRITE, FDCMD_READ, and FDCMD_FORMAT_TRACK commands are currently available.
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struct fd_cmd {
ushort_t fdc_cmd; /* command to be executed */
int fdc_flags; /* execution flags (IA only) */
daddr_t fdc_blkno; /* disk address for command */
int fdc_secnt; /* sector count for command */
caddr_t fdc_bufaddr; /* user's buffer address */
uint_t fdc_buflen; /* size of user's buffer */
};
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Please note that the fdc_buflen field
is currently unused. The fdc_secnt field is used to calculate
the transfer size, and the buffer is assumed to be large enough to accommodate
the transfer.
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{
/*
* Floppy commands
*/
#define FDCMD_WRITE 1
#define FDCMD_READ 2
#define FDCMD_SEEK 3
#define FDCMD_REZERO 4
#define FDCMD_FORMAT_UNIT 5
#define FDCMD_FORMAT_TRACK 6
};
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-
FDRAW
- The argument is a pointer to an fd_raw
structure (described below). This ioctl() allows
direct control of the floppy drive using the floppy controller. Refer to
the appropriate floppy-controller data sheet for full details on required
command bytes and returned result bytes. The following commands are supported.
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/*
* Floppy raw commands
*/
#define FDRAW_SPECIFY 0x03
#define FDRAW_READID 0x0a (IA only)
#define FDRAW_SENSE_DRV 0x04
#define FDRAW_REZERO 0x07
#define FDRAW_SEEK 0x0f
#define FDRAW_SENSE_INT 0x08 (IA only)
#define FDRAW_FORMAT 0x0d
#define FDRAW_READTRACK 0x02
#define FDRAW_WRCMD 0x05
#define FDRAW_RDCMD 0x06
#define FDRAW_WRITEDEL 0x09
#define FDRAW_READDEL 0x0c
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Please note that when using FDRAW_SEEK or FDRAW_REZERO,
the driver automatically issues a FDRAW_SENSE_INT command to clear the interrupt from the FDRAW_SEEK or the FDRAW_REZERO. The result bytes returned by these commands are the results from
the FDRAW_SENSE_INT command. Please
see the floppy-controller data sheet for more details on FDRAW_SENSE_INT.
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/*
* Used by FDRAW
*/
struct fd_raw {
char fdr_cmd[10]; /* user-supplied command bytes */
short fdr_cnum; /* number of command bytes */
char fdr_result[10]; /* controller-supplied result bytes */
ushort_t fdr_nbytes; /* number to transfer if read/write command */
char *fdr_addr; /* where to transfer if read/write command */
};
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