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1 | #ifndef _LINUX_FD_H |
2 | #define _LINUX_FD_H |
3 | |
4 | #include <linux/ioctl.h> |
5 | #include <linux/compiler.h> |
6 | |
7 | /* New file layout: Now the ioctl definitions immediately follow the |
8 | * definitions of the structures that they use */ |
9 | |
10 | /* |
11 | * Geometry |
12 | */ |
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; /* bit 0 !=0 means double track steps */ |
19 | /* bit 1 != 0 means swap sides */ |
20 | /* bits 2..9 give the first sector */ |
21 | /* number (the LSB is flipped) */ |
22 | #define FD_STRETCH 1 |
23 | #define FD_SWAPSIDES 2 |
24 | #define FD_ZEROBASED 4 |
25 | #define FD_SECTBASEMASK 0x3FC |
26 | #define FD_MKSECTBASE(s) (((s) ^ 1) << 2) |
27 | #define FD_SECTBASE(floppy) ((((floppy)->stretch & FD_SECTBASEMASK) >> 2) ^ 1) |
28 | |
29 | unsigned char gap, /* gap1 size */ |
30 | |
31 | rate, /* data rate. |= 0x40 for perpendicular */ |
32 | #define FD_2M 0x4 |
33 | #define FD_SIZECODEMASK 0x38 |
34 | #define FD_SIZECODE(floppy) (((((floppy)->rate&FD_SIZECODEMASK)>> 3)+ 2) %8) |
35 | #define FD_SECTSIZE(floppy) ( (floppy)->rate & FD_2M ? \ |
36 | 512 : 128 << FD_SIZECODE(floppy) ) |
37 | #define FD_PERP 0x40 |
38 | |
39 | spec1, /* stepping rate, head unload time */ |
40 | fmt_gap; /* gap2 size */ |
41 | const char * name; /* used only for predefined formats */ |
42 | }; |
43 | |
44 | |
45 | /* commands needing write access have 0x40 set */ |
46 | /* commands needing super user access have 0x80 set */ |
47 | |
48 | #define FDCLRPRM _IO(2, 0x41) |
49 | /* clear user-defined parameters */ |
50 | |
51 | #define FDSETPRM _IOW(2, 0x42, struct floppy_struct) |
52 | #define FDSETMEDIAPRM FDSETPRM |
53 | /* set user-defined parameters for current media */ |
54 | |
55 | #define FDDEFPRM _IOW(2, 0x43, struct floppy_struct) |
56 | #define FDGETPRM _IOR(2, 0x04, struct floppy_struct) |
57 | #define FDDEFMEDIAPRM FDDEFPRM |
58 | #define FDGETMEDIAPRM FDGETPRM |
59 | /* set/get disk parameters */ |
60 | |
61 | |
62 | #define FDMSGON _IO(2,0x45) |
63 | #define FDMSGOFF _IO(2,0x46) |
64 | /* issue/don't issue kernel messages on media type change */ |
65 | |
66 | |
67 | /* |
68 | * Formatting (obsolete) |
69 | */ |
70 | #define FD_FILL_BYTE 0xF6 /* format fill byte. */ |
71 | |
72 | struct format_descr { |
73 | unsigned int device,head,track; |
74 | }; |
75 | |
76 | #define FDFMTBEG _IO(2,0x47) |
77 | /* begin formatting a disk */ |
78 | #define FDFMTTRK _IOW(2,0x48, struct format_descr) |
79 | /* format the specified track */ |
80 | #define FDFMTEND _IO(2,0x49) |
81 | /* end formatting a disk */ |
82 | |
83 | |
84 | /* |
85 | * Error thresholds |
86 | */ |
87 | struct floppy_max_errors { |
88 | unsigned int |
89 | abort, /* number of errors to be reached before aborting */ |
90 | read_track, /* maximal number of errors permitted to read an |
91 | * entire track at once */ |
92 | reset, /* maximal number of errors before a reset is tried */ |
93 | recal, /* maximal number of errors before a recalibrate is |
94 | * tried */ |
95 | |
96 | /* |
97 | * Threshold for reporting FDC errors to the console. |
98 | * Setting this to zero may flood your screen when using |
99 | * ultra cheap floppies ;-) |
100 | */ |
101 | reporting; |
102 | |
103 | }; |
104 | |
105 | #define FDSETEMSGTRESH _IO(2,0x4a) |
106 | /* set fdc error reporting threshold */ |
107 | |
108 | #define FDFLUSH _IO(2,0x4b) |
109 | /* flush buffers for media; either for verifying media, or for |
110 | * handling a media change without closing the file descriptor */ |
111 | |
112 | #define FDSETMAXERRS _IOW(2, 0x4c, struct floppy_max_errors) |
113 | #define FDGETMAXERRS _IOR(2, 0x0e, struct floppy_max_errors) |
114 | /* set/get abortion and read_track threshold. See also floppy_drive_params |
115 | * structure */ |
116 | |
117 | |
118 | typedef char floppy_drive_name[16]; |
119 | #define FDGETDRVTYP _IOR(2, 0x0f, floppy_drive_name) |
120 | /* get drive type: 5 1/4 or 3 1/2 */ |
121 | |
122 | |
123 | /* |
124 | * Drive parameters (user modifiable) |
125 | */ |
126 | struct floppy_drive_params { |
127 | signed char cmos; /* CMOS type */ |
128 | |
129 | /* Spec2 is (HLD<<1 | ND), where HLD is head load time (1=2ms, 2=4 ms |
130 | * etc) and ND is set means no DMA. Hardcoded to 6 (HLD=6ms, use DMA). |
131 | */ |
132 | unsigned long max_dtr; /* Step rate, usec */ |
133 | unsigned long hlt; /* Head load/settle time, msec */ |
134 | unsigned long hut; /* Head unload time (remnant of |
135 | * 8" drives) */ |
136 | unsigned long srt; /* Step rate, usec */ |
137 | |
138 | unsigned long spinup; /* time needed for spinup (expressed |
139 | * in jiffies) */ |
140 | unsigned long spindown; /* timeout needed for spindown */ |
141 | unsigned char spindown_offset; /* decides in which position the disk |
142 | * will stop */ |
143 | unsigned char select_delay; /* delay to wait after select */ |
144 | unsigned char rps; /* rotations per second */ |
145 | unsigned char tracks; /* maximum number of tracks */ |
146 | unsigned long timeout; /* timeout for interrupt requests */ |
147 | |
148 | unsigned char interleave_sect; /* if there are more sectors, use |
149 | * interleave */ |
150 | |
151 | struct floppy_max_errors max_errors; |
152 | |
153 | char flags; /* various flags, including ftd_msg */ |
154 | /* |
155 | * Announce successful media type detection and media information loss after |
156 | * disk changes. |
157 | * Also used to enable/disable printing of overrun warnings. |
158 | */ |
159 | |
160 | #define FTD_MSG 0x10 |
161 | #define FD_BROKEN_DCL 0x20 |
162 | #define FD_DEBUG 0x02 |
163 | #define FD_SILENT_DCL_CLEAR 0x4 |
164 | #define FD_INVERTED_DCL 0x80 /* must be 0x80, because of hardware |
165 | considerations */ |
166 | |
167 | char read_track; /* use readtrack during probing? */ |
168 | |
169 | /* |
170 | * Auto-detection. Each drive type has eight formats which are |
171 | * used in succession to try to read the disk. If the FDC cannot lock onto |
172 | * the disk, the next format is tried. This uses the variable 'probing'. |
173 | */ |
174 | short autodetect[8]; /* autodetected formats */ |
175 | |
176 | int checkfreq; /* how often should the drive be checked for disk |
177 | * changes */ |
178 | int native_format; /* native format of this drive */ |
179 | }; |
180 | |
181 | enum { |
182 | FD_NEED_TWADDLE_BIT, /* more magic */ |
183 | FD_VERIFY_BIT, /* inquire for write protection */ |
184 | FD_DISK_NEWCHANGE_BIT, /* change detected, and no action undertaken yet |
185 | * to clear media change status */ |
186 | FD_UNUSED_BIT, |
187 | FD_DISK_CHANGED_BIT, /* disk has been changed since last i/o */ |
188 | FD_DISK_WRITABLE_BIT /* disk is writable */ |
189 | }; |
190 | |
191 | #define FDSETDRVPRM _IOW(2, 0x90, struct floppy_drive_params) |
192 | #define FDGETDRVPRM _IOR(2, 0x11, struct floppy_drive_params) |
193 | /* set/get drive parameters */ |
194 | |
195 | |
196 | /* |
197 | * Current drive state (not directly modifiable by user, readonly) |
198 | */ |
199 | struct floppy_drive_struct { |
200 | unsigned long flags; |
201 | /* values for these flags */ |
202 | #define FD_NEED_TWADDLE (1 << FD_NEED_TWADDLE_BIT) |
203 | #define FD_VERIFY (1 << FD_VERIFY_BIT) |
204 | #define FD_DISK_NEWCHANGE (1 << FD_DISK_NEWCHANGE_BIT) |
205 | #define FD_DISK_CHANGED (1 << FD_DISK_CHANGED_BIT) |
206 | #define FD_DISK_WRITABLE (1 << FD_DISK_WRITABLE_BIT) |
207 | |
208 | unsigned long spinup_date; |
209 | unsigned long select_date; |
210 | unsigned long first_read_date; |
211 | short probed_format; |
212 | short track; /* current track */ |
213 | short maxblock; /* id of highest block read */ |
214 | short maxtrack; /* id of highest half track read */ |
215 | int generation; /* how many diskchanges? */ |
216 | |
217 | /* |
218 | * (User-provided) media information is _not_ discarded after a media change |
219 | * if the corresponding keep_data flag is non-zero. Positive values are |
220 | * decremented after each probe. |
221 | */ |
222 | int keep_data; |
223 | |
224 | /* Prevent "aliased" accesses. */ |
225 | int fd_ref; |
226 | int fd_device; |
227 | unsigned long last_checked; /* when was the drive last checked for a disk |
228 | * change? */ |
229 | |
230 | char *dmabuf; |
231 | int bufblocks; |
232 | }; |
233 | |
234 | #define FDGETDRVSTAT _IOR(2, 0x12, struct floppy_drive_struct) |
235 | #define FDPOLLDRVSTAT _IOR(2, 0x13, struct floppy_drive_struct) |
236 | /* get drive state: GET returns the cached state, POLL polls for new state */ |
237 | |
238 | |
239 | /* |
240 | * reset FDC |
241 | */ |
242 | enum reset_mode { |
243 | FD_RESET_IF_NEEDED, /* reset only if the reset flags is set */ |
244 | FD_RESET_IF_RAWCMD, /* obsolete */ |
245 | FD_RESET_ALWAYS /* reset always */ |
246 | }; |
247 | #define FDRESET _IO(2, 0x54) |
248 | |
249 | |
250 | /* |
251 | * FDC state |
252 | */ |
253 | struct floppy_fdc_state { |
254 | int spec1; /* spec1 value last used */ |
255 | int spec2; /* spec2 value last used */ |
256 | int dtr; |
257 | unsigned char version; /* FDC version code */ |
258 | unsigned char dor; |
259 | unsigned long address; /* io address */ |
260 | unsigned int rawcmd:2; |
261 | unsigned int reset:1; |
262 | unsigned int need_configure:1; |
263 | unsigned int perp_mode:2; |
264 | unsigned int has_fifo:1; |
265 | unsigned int driver_version; /* version code for floppy driver */ |
266 | #define FD_DRIVER_VERSION 0x100 |
267 | /* user programs using the floppy API should use floppy_fdc_state to |
268 | * get the version number of the floppy driver that they are running |
269 | * on. If this version number is bigger than the one compiled into the |
270 | * user program (the FD_DRIVER_VERSION define), it should be prepared |
271 | * to bigger structures |
272 | */ |
273 | |
274 | unsigned char track[4]; |
275 | /* Position of the heads of the 4 units attached to this FDC, |
276 | * as stored on the FDC. In the future, the position as stored |
277 | * on the FDC might not agree with the actual physical |
278 | * position of these drive heads. By allowing such |
279 | * disagreement, it will be possible to reset the FDC without |
280 | * incurring the expensive cost of repositioning all heads. |
281 | * Right now, these positions are hard wired to 0. */ |
282 | |
283 | }; |
284 | |
285 | #define FDGETFDCSTAT _IOR(2, 0x15, struct floppy_fdc_state) |
286 | |
287 | |
288 | /* |
289 | * Asynchronous Write error tracking |
290 | */ |
291 | struct floppy_write_errors { |
292 | /* Write error logging. |
293 | * |
294 | * These fields can be cleared with the FDWERRORCLR ioctl. |
295 | * Only writes that were attempted but failed due to a physical media |
296 | * error are logged. write(2) calls that fail and return an error code |
297 | * to the user process are not counted. |
298 | */ |
299 | |
300 | unsigned int write_errors; /* number of physical write errors |
301 | * encountered */ |
302 | |
303 | /* position of first and last write errors */ |
304 | unsigned long first_error_sector; |
305 | int first_error_generation; |
306 | unsigned long last_error_sector; |
307 | int last_error_generation; |
308 | |
309 | unsigned int badness; /* highest retry count for a read or write |
310 | * operation */ |
311 | }; |
312 | |
313 | #define FDWERRORCLR _IO(2, 0x56) |
314 | /* clear write error and badness information */ |
315 | #define FDWERRORGET _IOR(2, 0x17, struct floppy_write_errors) |
316 | /* get write error and badness information */ |
317 | |
318 | |
319 | /* |
320 | * Raw commands |
321 | */ |
322 | /* new interface flag: now we can do them in batches */ |
323 | #define FDHAVEBATCHEDRAWCMD |
324 | |
325 | struct floppy_raw_cmd { |
326 | unsigned int flags; |
327 | #define FD_RAW_READ 1 |
328 | #define FD_RAW_WRITE 2 |
329 | #define FD_RAW_NO_MOTOR 4 |
330 | #define FD_RAW_DISK_CHANGE 4 /* out: disk change flag was set */ |
331 | #define FD_RAW_INTR 8 /* wait for an interrupt */ |
332 | #define FD_RAW_SPIN 0x10 /* spin up the disk for this command */ |
333 | #define FD_RAW_NO_MOTOR_AFTER 0x20 /* switch the motor off after command |
334 | * completion */ |
335 | #define FD_RAW_NEED_DISK 0x40 /* this command needs a disk to be present */ |
336 | #define FD_RAW_NEED_SEEK 0x80 /* this command uses an implied seek (soft) */ |
337 | |
338 | /* more "in" flags */ |
339 | #define FD_RAW_MORE 0x100 /* more records follow */ |
340 | #define FD_RAW_STOP_IF_FAILURE 0x200 /* stop if we encounter a failure */ |
341 | #define FD_RAW_STOP_IF_SUCCESS 0x400 /* stop if command successful */ |
342 | #define FD_RAW_SOFTFAILURE 0x800 /* consider the return value for failure |
343 | * detection too */ |
344 | |
345 | /* more "out" flags */ |
346 | #define FD_RAW_FAILURE 0x10000 /* command sent to fdc, fdc returned error */ |
347 | #define FD_RAW_HARDFAILURE 0x20000 /* fdc had to be reset, or timed out */ |
348 | |
349 | void __user *data; |
350 | char *kernel_data; /* location of data buffer in the kernel */ |
351 | struct floppy_raw_cmd *next; /* used for chaining of raw cmd's |
352 | * within the kernel */ |
353 | long length; /* in: length of dma transfer. out: remaining bytes */ |
354 | long phys_length; /* physical length, if different from dma length */ |
355 | int buffer_length; /* length of allocated buffer */ |
356 | |
357 | unsigned char rate; |
358 | unsigned char cmd_count; |
359 | unsigned char cmd[16]; |
360 | unsigned char reply_count; |
361 | unsigned char reply[16]; |
362 | int track; |
363 | int resultcode; |
364 | |
365 | int reserved1; |
366 | int reserved2; |
367 | }; |
368 | |
369 | #define FDRAWCMD _IO(2, 0x58) |
370 | /* send a raw command to the fdc. Structure size not included, because of |
371 | * batches */ |
372 | |
373 | #define FDTWADDLE _IO(2, 0x59) |
374 | /* flicker motor-on bit before reading a sector. Experimental */ |
375 | |
376 | |
377 | #define FDEJECT _IO(2, 0x5a) |
378 | /* eject the disk */ |
379 | |
380 | #endif |
381 |
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