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1 #ifndef _LINUX_FD_H
2 #define _LINUX_FD_H
3
4 #include <linux/ioctl.h>
5
6 /* New file layout: Now the ioctl definitions immediately follow the
7 * definitions of the structures that they use */
8
9 /*
10 * Geometry
11 */
12 struct floppy_struct {
13 unsigned int size, /* nr of sectors total */
14 sect, /* sectors per track */
15 head, /* nr of heads */
16 track, /* nr of tracks */
17 stretch; /* !=0 means double track steps */
18 #define FD_STRETCH 1
19 #define FD_SWAPSIDES 2
20
21 unsigned char gap, /* gap1 size */
22
23 rate, /* data rate. |= 0x40 for perpendicular */
24 #define FD_2M 0x4
25 #define FD_SIZECODEMASK 0x38
26 #define FD_SIZECODE(floppy) (((((floppy)->rate&FD_SIZECODEMASK)>> 3)+ 2) %8)
27 #define FD_SECTSIZE(floppy) ( (floppy)->rate & FD_2M ? \
28 512 : 128 << FD_SIZECODE(floppy) )
29 #define FD_PERP 0x40
30
31 spec1, /* stepping rate, head unload time */
32 fmt_gap; /* gap2 size */
33 const char * name; /* used only for predefined formats */
34 };
35
36
37 /* commands needing write access have 0x40 set */
38 /* commands needing super user access have 0x80 set */
39
40 #define FDCLRPRM _IO(2, 0x41)
41 /* clear user-defined parameters */
42
43 #define FDSETPRM _IOW(2, 0x42, struct floppy_struct)
44 #define FDSETMEDIAPRM FDSETPRM
45 /* set user-defined parameters for current media */
46
47 #define FDDEFPRM _IOW(2, 0x43, struct floppy_struct)
48 #define FDGETPRM _IOR(2, 0x04, struct floppy_struct)
49 #define FDDEFMEDIAPRM FDDEFPRM
50 #define FDGETMEDIAPRM FDGETPRM
51 /* set/get disk parameters */
52
53
54 #define FDMSGON _IO(2,0x45)
55 #define FDMSGOFF _IO(2,0x46)
56 /* issue/don't issue kernel messages on media type change */
57
58
59 /*
60 * Formatting (obsolete)
61 */
62 #define FD_FILL_BYTE 0xF6 /* format fill byte. */
63
64 struct format_descr {
65 unsigned int device,head,track;
66 };
67
68 #define FDFMTBEG _IO(2,0x47)
69 /* begin formatting a disk */
70 #define FDFMTTRK _IOW(2,0x48, struct format_descr)
71 /* format the specified track */
72 #define FDFMTEND _IO(2,0x49)
73 /* end formatting a disk */
74
75
76 /*
77 * Error thresholds
78 */
79 struct floppy_max_errors {
80 unsigned int
81 abort, /* number of errors to be reached before aborting */
82 read_track, /* maximal number of errors permitted to read an
83 * entire track at once */
84 reset, /* maximal number of errors before a reset is tried */
85 recal, /* maximal number of errors before a recalibrate is
86 * tried */
87
88 /*
89 * Threshold for reporting FDC errors to the console.
90 * Setting this to zero may flood your screen when using
91 * ultra cheap floppies ;-)
92 */
93 reporting;
94
95 };
96
97 #define FDSETEMSGTRESH _IO(2,0x4a)
98 /* set fdc error reporting threshold */
99
100 #define FDFLUSH _IO(2,0x4b)
101 /* flush buffers for media; either for verifying media, or for
102 * handling a media change without closing the file descriptor */
103
104 #define FDSETMAXERRS _IOW(2, 0x4c, struct floppy_max_errors)
105 #define FDGETMAXERRS _IOR(2, 0x0e, struct floppy_max_errors)
106 /* set/get abortion and read_track threshold. See also floppy_drive_params
107 * structure */
108
109
110 typedef char floppy_drive_name[16];
111 #define FDGETDRVTYP _IOR(2, 0x0f, floppy_drive_name)
112 /* get drive type: 5 1/4 or 3 1/2 */
113
114
115 /*
116 * Drive parameters (user modifyable)
117 */
118 struct floppy_drive_params {
119 char cmos; /* cmos type */
120
121 /* Spec2 is (HLD<<1 | ND), where HLD is head load time (1=2ms, 2=4 ms
122 * etc) and ND is set means no DMA. Hardcoded to 6 (HLD=6ms, use DMA).
123 */
124 unsigned long max_dtr; /* Step rate, usec */
125 unsigned long hlt; /* Head load/settle time, msec */
126 unsigned long hut; /* Head unload time (remnant of
127 * 8" drives) */
128 unsigned long srt; /* Step rate, usec */
129
130 unsigned long spinup; /* time needed for spinup (expressed
131 * in jiffies) */
132 unsigned long spindown; /* timeout needed for spindown */
133 unsigned char spindown_offset; /* decides in which position the disk
134 * will stop */
135 unsigned char select_delay; /* delay to wait after select */
136 unsigned char rps; /* rotations per second */
137 unsigned char tracks; /* maximum number of tracks */
138 unsigned long timeout; /* timeout for interrupt requests */
139
140 unsigned char interleave_sect; /* if there are more sectors, use
141 * interleave */
142
143 struct floppy_max_errors max_errors;
144
145 char flags; /* various flags, including ftd_msg */
146 /*
147 * Announce successful media type detection and media information loss after
148 * disk changes.
149 * Also used to enable/disable printing of overrun warnings.
150 */
151
152 #define FTD_MSG 0x10
153 #define FD_BROKEN_DCL 0x20
154 #define FD_DEBUG 0x02
155 #define FD_SILENT_DCL_CLEAR 0x4
156 #define FD_INVERTED_DCL 0x80
157
158 char read_track; /* use readtrack during probing? */
159
160 /*
161 * Auto-detection. Each drive type has eight formats which are
162 * used in succession to try to read the disk. If the FDC cannot lock onto
163 * the disk, the next format is tried. This uses the variable 'probing'.
164 */
165 short autodetect[8]; /* autodetected formats */
166
167 int checkfreq; /* how often should the drive be checked for disk
168 * changes */
169 int native_format; /* native format of this drive */
170 };
171
172 enum {
173 FD_NEED_TWADDLE_BIT, /* more magic */
174 FD_VERIFY_BIT, /* inquire for write protection */
175 FD_DISK_NEWCHANGE_BIT, /* change detected, and no action undertaken yet
176 * to clear media change status */
177 FD_UNUSED_BIT,
178 FD_DISK_CHANGED_BIT, /* disk has been changed since last i/o */
179 FD_DISK_WRITABLE_BIT /* disk is writable */
180 };
181
182 #define FDSETDRVPRM _IOW(2, 0x90, struct floppy_drive_params)
183 #define FDGETDRVPRM _IOR(2, 0x11, struct floppy_drive_params)
184 /* set/get drive parameters */
185
186
187 /*
188 * Current drive state (not directly modifyable by user, readonly)
189 */
190 struct floppy_drive_struct {
191 signed char flags;
192 /* values for these flags */
193 #define FD_NEED_TWADDLE (1 << FD_NEED_TWADDLE_BIT)
194 #define FD_VERIFY (1 << FD_VERIFY_BIT)
195 #define FD_DISK_NEWCHANGE (1 << FD_DISK_NEWCHANGE_BIT)
196 #define FD_DISK_CHANGED (1 << FD_DISK_CHANGED_BIT)
197 #define FD_DISK_WRITABLE (1 << FD_DISK_WRITABLE_BIT)
198
199 unsigned long spinup_date;
200 unsigned long select_date;
201 unsigned long first_read_date;
202 short probed_format;
203 short track; /* current track */
204 short maxblock; /* id of highest block read */
205 short maxtrack; /* id of highest half track read */
206 int generation; /* how many diskchanges? */
207
208 /*
209 * (User-provided) media information is _not_ discarded after a media change
210 * if the corresponding keep_data flag is non-zero. Positive values are
211 * decremented after each probe.
212 */
213 int keep_data;
214
215 /* Prevent "aliased" accesses. */
216 int fd_ref;
217 int fd_device;
218 int last_checked; /* when was the drive last checked for a disk
219 * change? */
220
221 char *dmabuf;
222 int bufblocks;
223 };
224
225 #define FDGETDRVSTAT _IOR(2, 0x12, struct floppy_drive_struct)
226 #define FDPOLLDRVSTAT _IOR(2, 0x13, struct floppy_drive_struct)
227 /* get drive state: GET returns the cached state, POLL polls for new state */
228
229
230 /*
231 * reset FDC
232 */
233 enum reset_mode {
234 FD_RESET_IF_NEEDED, /* reset only if the reset flags is set */
235 FD_RESET_IF_RAWCMD, /* obsolete */
236 FD_RESET_ALWAYS /* reset always */
237 };
238 #define FDRESET _IO(2, 0x54)
239
240
241 /*
242 * FDC state
243 */
244 struct floppy_fdc_state {
245 int spec1; /* spec1 value last used */
246 int spec2; /* spec2 value last used */
247 int dtr;
248 unsigned char version; /* FDC version code */
249 unsigned char dor;
250 int address; /* io address */
251 unsigned int rawcmd:2;
252 unsigned int reset:1;
253 unsigned int need_configure:1;
254 unsigned int perp_mode:2;
255 unsigned int has_fifo:1;
256 unsigned int driver_version; /* version code for floppy driver */
257 #define FD_DRIVER_VERSION 0x100
258 /* user programs using the floppy API should use floppy_fdc_state to
259 * get the version number of the floppy driver that they are running
260 * on. If this version number is bigger than the one compiled into the
261 * user program (the FD_DRIVER_VERSION define), it should be prepared
262 * to bigger structures
263 */
264
265 unsigned char track[4];
266 /* Position of the heads of the 4 units attached to this FDC,
267 * as stored on the FDC. In the future, the position as stored
268 * on the FDC might not agree with the actual physical
269 * position of these drive heads. By allowing such
270 * disagreement, it will be possible to reset the FDC without
271 * incurring the expensive cost of repositioning all heads.
272 * Right now, these positions are hard wired to 0. */
273
274 };
275
276 #define FDGETFDCSTAT _IOR(2, 0x15, struct floppy_fdc_state)
277
278
279 /*
280 * Asynchronous Write error tracking
281 */
282 struct floppy_write_errors {
283 /* Write error logging.
284 *
285 * These fields can be cleared with the FDWERRORCLR ioctl.
286 * Only writes that were attempted but failed due to a physical media
287 * error are logged. write(2) calls that fail and return an error code
288 * to the user process are not counted.
289 */
290
291 unsigned int write_errors; /* number of physical write errors
292 * encountered */
293
294 /* position of first and last write errors */
295 unsigned long first_error_sector;
296 int first_error_generation;
297 unsigned long last_error_sector;
298 int last_error_generation;
299
300 unsigned int badness; /* highest retry count for a read or write
301 * operation */
302 };
303
304 #define FDWERRORCLR _IO(2, 0x56)
305 /* clear write error and badness information */
306 #define FDWERRORGET _IOR(2, 0x17, struct floppy_write_errors)
307 /* get write error and badness information */
308
309
310 /*
311 * Raw commands
312 */
313 /* new interface flag: now we can do them in batches */
314 #define FDHAVEBATCHEDRAWCMD
315
316 struct floppy_raw_cmd {
317 unsigned int flags;
318 #define FD_RAW_READ 1
319 #define FD_RAW_WRITE 2
320 #define FD_RAW_NO_MOTOR 4
321 #define FD_RAW_DISK_CHANGE 4 /* out: disk change flag was set */
322 #define FD_RAW_INTR 8 /* wait for an interrupt */
323 #define FD_RAW_SPIN 0x10 /* spin up the disk for this command */
324 #define FD_RAW_NO_MOTOR_AFTER 0x20 /* switch the motor off after command
325 * completion */
326 #define FD_RAW_NEED_DISK 0x40 /* this command needs a disk to be present */
327 #define FD_RAW_NEED_SEEK 0x80 /* this command uses an implied seek (soft) */
328
329 /* more "in" flags */
330 #define FD_RAW_MORE 0x100 /* more records follow */
331 #define FD_RAW_STOP_IF_FAILURE 0x200 /* stop if we encounter a failure */
332 #define FD_RAW_STOP_IF_SUCCESS 0x400 /* stop if command successful */
333 #define FD_RAW_SOFTFAILURE 0x800 /* consider the return value for failure
334 * detection too */
335
336 /* more "out" flags */
337 #define FD_RAW_FAILURE 0x10000 /* command sent to fdc, fdc returned error */
338 #define FD_RAW_HARDFAILURE 0x20000 /* fdc had to be reset, or timed out */
339
340 void *data;
341 char *kernel_data; /* location of data buffer in the kernel */
342 struct floppy_raw_cmd *next; /* used for chaining of raw cmd's
343 * withing the kernel */
344 long length; /* in: length of dma transfer. out: remaining bytes */
345 long phys_length; /* physical length, if different from dma length */
346 int buffer_length; /* length of allocated buffer */
347
348 unsigned char rate;
349 unsigned char cmd_count;
350 unsigned char cmd[16];
351 unsigned char reply_count;
352 unsigned char reply[16];
353 int track;
354 int resultcode;
355
356 int reserved1;
357 int reserved2;
358 };
359
360 #define FDRAWCMD _IO(2, 0x58)
361 /* send a raw command to the fdc. Structure size not included, because of
362 * batches */
363
364 #define FDTWADDLE _IO(2, 0x59)
365 /* flicker motor-on bit before reading a sector. Experimental */
366
367
368 #endif
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