4 #include <linux/ioctl.h>
5 #include <linux/compiler.h>
7 /* New file layout: Now the ioctl definitions immediately follow the
8 * definitions of the structures that they use */
13 struct floppy_struct {
14 unsigned int size, /* nr of sectors total */
15 sect, /* sectors per track */
16 head, /* nr of heads */
17 track, /* nr of tracks */
18 stretch; /* !=0 means double track steps */
20 #define FD_SWAPSIDES 2
21 #define FD_ZEROBASED 4
23 unsigned char gap, /* gap1 size */
25 rate, /* data rate. |= 0x40 for perpendicular */
27 #define FD_SIZECODEMASK 0x38
28 #define FD_SIZECODE(floppy) (((((floppy)->rate&FD_SIZECODEMASK)>> 3)+ 2) %8)
29 #define FD_SECTSIZE(floppy) ( (floppy)->rate & FD_2M ? \
30 512 : 128 << FD_SIZECODE(floppy) )
33 spec1, /* stepping rate, head unload time */
34 fmt_gap; /* gap2 size */
35 const char * name; /* used only for predefined formats */
39 /* commands needing write access have 0x40 set */
40 /* commands needing super user access have 0x80 set */
42 #define FDCLRPRM _IO(2, 0x41)
43 /* clear user-defined parameters */
45 #define FDSETPRM _IOW(2, 0x42, struct floppy_struct)
46 #define FDSETMEDIAPRM FDSETPRM
47 /* set user-defined parameters for current media */
49 #define FDDEFPRM _IOW(2, 0x43, struct floppy_struct)
50 #define FDGETPRM _IOR(2, 0x04, struct floppy_struct)
51 #define FDDEFMEDIAPRM FDDEFPRM
52 #define FDGETMEDIAPRM FDGETPRM
53 /* set/get disk parameters */
56 #define FDMSGON _IO(2,0x45)
57 #define FDMSGOFF _IO(2,0x46)
58 /* issue/don't issue kernel messages on media type change */
62 * Formatting (obsolete)
64 #define FD_FILL_BYTE 0xF6 /* format fill byte. */
67 unsigned int device,head,track;
70 #define FDFMTBEG _IO(2,0x47)
71 /* begin formatting a disk */
72 #define FDFMTTRK _IOW(2,0x48, struct format_descr)
73 /* format the specified track */
74 #define FDFMTEND _IO(2,0x49)
75 /* end formatting a disk */
81 struct floppy_max_errors {
83 abort, /* number of errors to be reached before aborting */
84 read_track, /* maximal number of errors permitted to read an
85 * entire track at once */
86 reset, /* maximal number of errors before a reset is tried */
87 recal, /* maximal number of errors before a recalibrate is
91 * Threshold for reporting FDC errors to the console.
92 * Setting this to zero may flood your screen when using
93 * ultra cheap floppies ;-)
99 #define FDSETEMSGTRESH _IO(2,0x4a)
100 /* set fdc error reporting threshold */
102 #define FDFLUSH _IO(2,0x4b)
103 /* flush buffers for media; either for verifying media, or for
104 * handling a media change without closing the file descriptor */
106 #define FDSETMAXERRS _IOW(2, 0x4c, struct floppy_max_errors)
107 #define FDGETMAXERRS _IOR(2, 0x0e, struct floppy_max_errors)
108 /* set/get abortion and read_track threshold. See also floppy_drive_params
112 typedef char floppy_drive_name[16];
113 #define FDGETDRVTYP _IOR(2, 0x0f, floppy_drive_name)
114 /* get drive type: 5 1/4 or 3 1/2 */
118 * Drive parameters (user modifiable)
120 struct floppy_drive_params {
121 signed char cmos; /* CMOS type */
123 /* Spec2 is (HLD<<1 | ND), where HLD is head load time (1=2ms, 2=4 ms
124 * etc) and ND is set means no DMA. Hardcoded to 6 (HLD=6ms, use DMA).
126 unsigned long max_dtr; /* Step rate, usec */
127 unsigned long hlt; /* Head load/settle time, msec */
128 unsigned long hut; /* Head unload time (remnant of
130 unsigned long srt; /* Step rate, usec */
132 unsigned long spinup; /* time needed for spinup (expressed
134 unsigned long spindown; /* timeout needed for spindown */
135 unsigned char spindown_offset; /* decides in which position the disk
137 unsigned char select_delay; /* delay to wait after select */
138 unsigned char rps; /* rotations per second */
139 unsigned char tracks; /* maximum number of tracks */
140 unsigned long timeout; /* timeout for interrupt requests */
142 unsigned char interleave_sect; /* if there are more sectors, use
145 struct floppy_max_errors max_errors;
147 char flags; /* various flags, including ftd_msg */
149 * Announce successful media type detection and media information loss after
151 * Also used to enable/disable printing of overrun warnings.
155 #define FD_BROKEN_DCL 0x20
156 #define FD_DEBUG 0x02
157 #define FD_SILENT_DCL_CLEAR 0x4
158 #define FD_INVERTED_DCL 0x80 /* must be 0x80, because of hardware
161 char read_track; /* use readtrack during probing? */
164 * Auto-detection. Each drive type has eight formats which are
165 * used in succession to try to read the disk. If the FDC cannot lock onto
166 * the disk, the next format is tried. This uses the variable 'probing'.
168 short autodetect[8]; /* autodetected formats */
170 int checkfreq; /* how often should the drive be checked for disk
172 int native_format; /* native format of this drive */
176 FD_NEED_TWADDLE_BIT, /* more magic */
177 FD_VERIFY_BIT, /* inquire for write protection */
178 FD_DISK_NEWCHANGE_BIT, /* change detected, and no action undertaken yet
179 * to clear media change status */
181 FD_DISK_CHANGED_BIT, /* disk has been changed since last i/o */
182 FD_DISK_WRITABLE_BIT /* disk is writable */
185 #define FDSETDRVPRM _IOW(2, 0x90, struct floppy_drive_params)
186 #define FDGETDRVPRM _IOR(2, 0x11, struct floppy_drive_params)
187 /* set/get drive parameters */
191 * Current drive state (not directly modifiable by user, readonly)
193 struct floppy_drive_struct {
195 /* values for these flags */
196 #define FD_NEED_TWADDLE (1 << FD_NEED_TWADDLE_BIT)
197 #define FD_VERIFY (1 << FD_VERIFY_BIT)
198 #define FD_DISK_NEWCHANGE (1 << FD_DISK_NEWCHANGE_BIT)
199 #define FD_DISK_CHANGED (1 << FD_DISK_CHANGED_BIT)
200 #define FD_DISK_WRITABLE (1 << FD_DISK_WRITABLE_BIT)
202 unsigned long spinup_date;
203 unsigned long select_date;
204 unsigned long first_read_date;
206 short track; /* current track */
207 short maxblock; /* id of highest block read */
208 short maxtrack; /* id of highest half track read */
209 int generation; /* how many diskchanges? */
212 * (User-provided) media information is _not_ discarded after a media change
213 * if the corresponding keep_data flag is non-zero. Positive values are
214 * decremented after each probe.
218 /* Prevent "aliased" accesses. */
221 unsigned long last_checked; /* when was the drive last checked for a disk
228 #define FDGETDRVSTAT _IOR(2, 0x12, struct floppy_drive_struct)
229 #define FDPOLLDRVSTAT _IOR(2, 0x13, struct floppy_drive_struct)
230 /* get drive state: GET returns the cached state, POLL polls for new state */
237 FD_RESET_IF_NEEDED, /* reset only if the reset flags is set */
238 FD_RESET_IF_RAWCMD, /* obsolete */
239 FD_RESET_ALWAYS /* reset always */
241 #define FDRESET _IO(2, 0x54)
247 struct floppy_fdc_state {
248 int spec1; /* spec1 value last used */
249 int spec2; /* spec2 value last used */
251 unsigned char version; /* FDC version code */
253 unsigned long address; /* io address */
254 unsigned int rawcmd:2;
255 unsigned int reset:1;
256 unsigned int need_configure:1;
257 unsigned int perp_mode:2;
258 unsigned int has_fifo:1;
259 unsigned int driver_version; /* version code for floppy driver */
260 #define FD_DRIVER_VERSION 0x100
261 /* user programs using the floppy API should use floppy_fdc_state to
262 * get the version number of the floppy driver that they are running
263 * on. If this version number is bigger than the one compiled into the
264 * user program (the FD_DRIVER_VERSION define), it should be prepared
265 * to bigger structures
268 unsigned char track[4];
269 /* Position of the heads of the 4 units attached to this FDC,
270 * as stored on the FDC. In the future, the position as stored
271 * on the FDC might not agree with the actual physical
272 * position of these drive heads. By allowing such
273 * disagreement, it will be possible to reset the FDC without
274 * incurring the expensive cost of repositioning all heads.
275 * Right now, these positions are hard wired to 0. */
279 #define FDGETFDCSTAT _IOR(2, 0x15, struct floppy_fdc_state)
283 * Asynchronous Write error tracking
285 struct floppy_write_errors {
286 /* Write error logging.
288 * These fields can be cleared with the FDWERRORCLR ioctl.
289 * Only writes that were attempted but failed due to a physical media
290 * error are logged. write(2) calls that fail and return an error code
291 * to the user process are not counted.
294 unsigned int write_errors; /* number of physical write errors
297 /* position of first and last write errors */
298 unsigned long first_error_sector;
299 int first_error_generation;
300 unsigned long last_error_sector;
301 int last_error_generation;
303 unsigned int badness; /* highest retry count for a read or write
307 #define FDWERRORCLR _IO(2, 0x56)
308 /* clear write error and badness information */
309 #define FDWERRORGET _IOR(2, 0x17, struct floppy_write_errors)
310 /* get write error and badness information */
316 /* new interface flag: now we can do them in batches */
317 #define FDHAVEBATCHEDRAWCMD
319 struct floppy_raw_cmd {
321 #define FD_RAW_READ 1
322 #define FD_RAW_WRITE 2
323 #define FD_RAW_NO_MOTOR 4
324 #define FD_RAW_DISK_CHANGE 4 /* out: disk change flag was set */
325 #define FD_RAW_INTR 8 /* wait for an interrupt */
326 #define FD_RAW_SPIN 0x10 /* spin up the disk for this command */
327 #define FD_RAW_NO_MOTOR_AFTER 0x20 /* switch the motor off after command
329 #define FD_RAW_NEED_DISK 0x40 /* this command needs a disk to be present */
330 #define FD_RAW_NEED_SEEK 0x80 /* this command uses an implied seek (soft) */
332 /* more "in" flags */
333 #define FD_RAW_MORE 0x100 /* more records follow */
334 #define FD_RAW_STOP_IF_FAILURE 0x200 /* stop if we encounter a failure */
335 #define FD_RAW_STOP_IF_SUCCESS 0x400 /* stop if command successful */
336 #define FD_RAW_SOFTFAILURE 0x800 /* consider the return value for failure
339 /* more "out" flags */
340 #define FD_RAW_FAILURE 0x10000 /* command sent to fdc, fdc returned error */
341 #define FD_RAW_HARDFAILURE 0x20000 /* fdc had to be reset, or timed out */
344 char *kernel_data; /* location of data buffer in the kernel */
345 struct floppy_raw_cmd *next; /* used for chaining of raw cmd's
346 * within the kernel */
347 long length; /* in: length of dma transfer. out: remaining bytes */
348 long phys_length; /* physical length, if different from dma length */
349 int buffer_length; /* length of allocated buffer */
352 unsigned char cmd_count;
353 unsigned char cmd[16];
354 unsigned char reply_count;
355 unsigned char reply[16];
363 #define FDRAWCMD _IO(2, 0x58)
364 /* send a raw command to the fdc. Structure size not included, because of
367 #define FDTWADDLE _IO(2, 0x59)
368 /* flicker motor-on bit before reading a sector. Experimental */
371 #define FDEJECT _IO(2, 0x5a)