1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux 1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _UAPI_LINUX_FD_H 2 #ifndef _UAPI_LINUX_FD_H
3 #define _UAPI_LINUX_FD_H 3 #define _UAPI_LINUX_FD_H
4 4
5 #include <linux/ioctl.h> 5 #include <linux/ioctl.h>
6 #include <linux/compiler.h> 6 #include <linux/compiler.h>
7 7
8 /* New file layout: Now the ioctl definitions 8 /* New file layout: Now the ioctl definitions immediately follow the
9 * definitions of the structures that they use 9 * definitions of the structures that they use */
10 10
11 /* 11 /*
12 * Geometry 12 * Geometry
13 */ 13 */
14 struct floppy_struct { 14 struct floppy_struct {
15 unsigned int size, /* nr 15 unsigned int size, /* nr of sectors total */
16 sect, /* sec 16 sect, /* sectors per track */
17 head, /* nr 17 head, /* nr of heads */
18 track, /* nr 18 track, /* nr of tracks */
19 stretch; /* bit 19 stretch; /* bit 0 !=0 means double track steps */
20 /* bit 20 /* bit 1 != 0 means swap sides */
21 /* bit 21 /* bits 2..9 give the first sector */
22 /* nu 22 /* number (the LSB is flipped) */
23 #define FD_STRETCH 1 23 #define FD_STRETCH 1
24 #define FD_SWAPSIDES 2 24 #define FD_SWAPSIDES 2
25 #define FD_ZEROBASED 4 25 #define FD_ZEROBASED 4
26 #define FD_SECTBASEMASK 0x3FC 26 #define FD_SECTBASEMASK 0x3FC
27 #define FD_MKSECTBASE(s) (((s) ^ 1) << 2) 27 #define FD_MKSECTBASE(s) (((s) ^ 1) << 2)
28 #define FD_SECTBASE(floppy) ((((floppy)->stret 28 #define FD_SECTBASE(floppy) ((((floppy)->stretch & FD_SECTBASEMASK) >> 2) ^ 1)
29 29
30 unsigned char gap, /* gap 30 unsigned char gap, /* gap1 size */
31 31
32 rate, /* dat 32 rate, /* data rate. |= 0x40 for perpendicular */
33 #define FD_2M 0x4 33 #define FD_2M 0x4
34 #define FD_SIZECODEMASK 0x38 34 #define FD_SIZECODEMASK 0x38
35 #define FD_SIZECODE(floppy) (((((floppy)->rate 35 #define FD_SIZECODE(floppy) (((((floppy)->rate&FD_SIZECODEMASK)>> 3)+ 2) %8)
36 #define FD_SECTSIZE(floppy) ( (floppy)->rate & 36 #define FD_SECTSIZE(floppy) ( (floppy)->rate & FD_2M ? \
37 512 : 128 << FD_S 37 512 : 128 << FD_SIZECODE(floppy) )
38 #define FD_PERP 0x40 38 #define FD_PERP 0x40
39 39
40 spec1, /* ste 40 spec1, /* stepping rate, head unload time */
41 fmt_gap; /* gap 41 fmt_gap; /* gap2 size */
42 const char * name; /* used only f 42 const char * name; /* used only for predefined formats */
43 }; 43 };
44 44
45 45
46 /* commands needing write access have 0x40 set 46 /* commands needing write access have 0x40 set */
47 /* commands needing super user access have 0x8 47 /* commands needing super user access have 0x80 set */
48 48
49 #define FDCLRPRM _IO(2, 0x41) 49 #define FDCLRPRM _IO(2, 0x41)
50 /* clear user-defined parameters */ 50 /* clear user-defined parameters */
51 51
52 #define FDSETPRM _IOW(2, 0x42, struct floppy_s 52 #define FDSETPRM _IOW(2, 0x42, struct floppy_struct)
53 #define FDSETMEDIAPRM FDSETPRM 53 #define FDSETMEDIAPRM FDSETPRM
54 /* set user-defined parameters for current med 54 /* set user-defined parameters for current media */
55 55
56 #define FDDEFPRM _IOW(2, 0x43, struct floppy_s 56 #define FDDEFPRM _IOW(2, 0x43, struct floppy_struct)
57 #define FDGETPRM _IOR(2, 0x04, struct floppy_s 57 #define FDGETPRM _IOR(2, 0x04, struct floppy_struct)
58 #define FDDEFMEDIAPRM FDDEFPRM 58 #define FDDEFMEDIAPRM FDDEFPRM
59 #define FDGETMEDIAPRM FDGETPRM 59 #define FDGETMEDIAPRM FDGETPRM
60 /* set/get disk parameters */ 60 /* set/get disk parameters */
61 61
62 62
63 #define FDMSGON _IO(2,0x45) 63 #define FDMSGON _IO(2,0x45)
64 #define FDMSGOFF _IO(2,0x46) 64 #define FDMSGOFF _IO(2,0x46)
65 /* issue/don't issue kernel messages on media 65 /* issue/don't issue kernel messages on media type change */
66 66
67 67
68 /* 68 /*
69 * Formatting (obsolete) 69 * Formatting (obsolete)
70 */ 70 */
71 #define FD_FILL_BYTE 0xF6 /* format fill byte. 71 #define FD_FILL_BYTE 0xF6 /* format fill byte. */
72 72
73 struct format_descr { 73 struct format_descr {
74 unsigned int device,head,track; 74 unsigned int device,head,track;
75 }; 75 };
76 76
77 #define FDFMTBEG _IO(2,0x47) 77 #define FDFMTBEG _IO(2,0x47)
78 /* begin formatting a disk */ 78 /* begin formatting a disk */
79 #define FDFMTTRK _IOW(2,0x48, struct format_de 79 #define FDFMTTRK _IOW(2,0x48, struct format_descr)
80 /* format the specified track */ 80 /* format the specified track */
81 #define FDFMTEND _IO(2,0x49) 81 #define FDFMTEND _IO(2,0x49)
82 /* end formatting a disk */ 82 /* end formatting a disk */
83 83
84 84
85 /* 85 /*
86 * Error thresholds 86 * Error thresholds
87 */ 87 */
88 struct floppy_max_errors { 88 struct floppy_max_errors {
89 unsigned int 89 unsigned int
90 abort, /* number of errors to b 90 abort, /* number of errors to be reached before aborting */
91 read_track, /* maximal number of err 91 read_track, /* maximal number of errors permitted to read an
92 * entire track at once 92 * entire track at once */
93 reset, /* maximal number of err 93 reset, /* maximal number of errors before a reset is tried */
94 recal, /* maximal number of err 94 recal, /* maximal number of errors before a recalibrate is
95 * tried */ 95 * tried */
96 96
97 /* 97 /*
98 * Threshold for reporting FDC error 98 * Threshold for reporting FDC errors to the console.
99 * Setting this to zero may flood yo 99 * Setting this to zero may flood your screen when using
100 * ultra cheap floppies ;-) 100 * ultra cheap floppies ;-)
101 */ 101 */
102 reporting; 102 reporting;
103 103
104 }; 104 };
105 105
106 #define FDSETEMSGTRESH _IO(2,0x4a) 106 #define FDSETEMSGTRESH _IO(2,0x4a)
107 /* set fdc error reporting threshold */ 107 /* set fdc error reporting threshold */
108 108
109 #define FDFLUSH _IO(2,0x4b) 109 #define FDFLUSH _IO(2,0x4b)
110 /* flush buffers for media; either for verifyi 110 /* flush buffers for media; either for verifying media, or for
111 * handling a media change without closing the 111 * handling a media change without closing the file descriptor */
112 112
113 #define FDSETMAXERRS _IOW(2, 0x4c, struct flop 113 #define FDSETMAXERRS _IOW(2, 0x4c, struct floppy_max_errors)
114 #define FDGETMAXERRS _IOR(2, 0x0e, struct flop 114 #define FDGETMAXERRS _IOR(2, 0x0e, struct floppy_max_errors)
115 /* set/get abortion and read_track threshold. 115 /* set/get abortion and read_track threshold. See also floppy_drive_params
116 * structure */ 116 * structure */
117 117
118 118
119 typedef char floppy_drive_name[16]; 119 typedef char floppy_drive_name[16];
120 #define FDGETDRVTYP _IOR(2, 0x0f, floppy_drive 120 #define FDGETDRVTYP _IOR(2, 0x0f, floppy_drive_name)
121 /* get drive type: 5 1/4 or 3 1/2 */ 121 /* get drive type: 5 1/4 or 3 1/2 */
122 122
123 123
124 /* 124 /*
125 * Drive parameters (user modifiable) 125 * Drive parameters (user modifiable)
126 */ 126 */
127 struct floppy_drive_params { 127 struct floppy_drive_params {
128 signed char cmos; /* CMO 128 signed char cmos; /* CMOS type */
129 129
130 /* Spec2 is (HLD<<1 | ND), where HLD i 130 /* Spec2 is (HLD<<1 | ND), where HLD is head load time (1=2ms, 2=4 ms
131 * etc) and ND is set means no DMA. Ha 131 * etc) and ND is set means no DMA. Hardcoded to 6 (HLD=6ms, use DMA).
132 */ 132 */
133 unsigned long max_dtr; /* Ste 133 unsigned long max_dtr; /* Step rate, usec */
134 unsigned long hlt; /* Hea 134 unsigned long hlt; /* Head load/settle time, msec */
135 unsigned long hut; /* Hea 135 unsigned long hut; /* Head unload time (remnant of
136 * 8" 136 * 8" drives) */
137 unsigned long srt; /* Ste 137 unsigned long srt; /* Step rate, usec */
138 138
139 unsigned long spinup; /* tim 139 unsigned long spinup; /* time needed for spinup (expressed
140 * in 140 * in jiffies) */
141 unsigned long spindown; /* tim 141 unsigned long spindown; /* timeout needed for spindown */
142 unsigned char spindown_offset; /* dec 142 unsigned char spindown_offset; /* decides in which position the disk
143 * wil 143 * will stop */
144 unsigned char select_delay; /* del 144 unsigned char select_delay; /* delay to wait after select */
145 unsigned char rps; /* rot 145 unsigned char rps; /* rotations per second */
146 unsigned char tracks; /* max 146 unsigned char tracks; /* maximum number of tracks */
147 unsigned long timeout; /* tim 147 unsigned long timeout; /* timeout for interrupt requests */
148 148
149 unsigned char interleave_sect; /* if 149 unsigned char interleave_sect; /* if there are more sectors, use
150 * int 150 * interleave */
151 151
152 struct floppy_max_errors max_errors; 152 struct floppy_max_errors max_errors;
153 153
154 char flags; /* var 154 char flags; /* various flags, including ftd_msg */
155 /* 155 /*
156 * Announce successful media type detection an 156 * Announce successful media type detection and media information loss after
157 * disk changes. 157 * disk changes.
158 * Also used to enable/disable printing of ove 158 * Also used to enable/disable printing of overrun warnings.
159 */ 159 */
160 160
161 #define FTD_MSG 0x10 161 #define FTD_MSG 0x10
162 #define FD_BROKEN_DCL 0x20 162 #define FD_BROKEN_DCL 0x20
163 #define FD_DEBUG 0x02 163 #define FD_DEBUG 0x02
164 #define FD_SILENT_DCL_CLEAR 0x4 164 #define FD_SILENT_DCL_CLEAR 0x4
165 #define FD_INVERTED_DCL 0x80 /* must be 0x80, 165 #define FD_INVERTED_DCL 0x80 /* must be 0x80, because of hardware
166 considerations 166 considerations */
167 167
168 char read_track; /* use 168 char read_track; /* use readtrack during probing? */
169 169
170 /* 170 /*
171 * Auto-detection. Each drive type has eight f 171 * Auto-detection. Each drive type has eight formats which are
172 * used in succession to try to read the disk. 172 * used in succession to try to read the disk. If the FDC cannot lock onto
173 * the disk, the next format is tried. This us 173 * the disk, the next format is tried. This uses the variable 'probing'.
174 */ 174 */
175 175
176 #define FD_AUTODETECT_SIZE 8 176 #define FD_AUTODETECT_SIZE 8
177 177
178 short autodetect[FD_AUTODETECT_SIZE]; 178 short autodetect[FD_AUTODETECT_SIZE]; /* autodetected formats */
179 179
180 int checkfreq; /* how often should the 180 int checkfreq; /* how often should the drive be checked for disk
181 * changes */ 181 * changes */
182 int native_format; /* native format of 182 int native_format; /* native format of this drive */
183 }; 183 };
184 184
185 enum { 185 enum {
186 FD_NEED_TWADDLE_BIT, /* more magic 186 FD_NEED_TWADDLE_BIT, /* more magic */
187 FD_VERIFY_BIT, /* inquire for 187 FD_VERIFY_BIT, /* inquire for write protection */
188 FD_DISK_NEWCHANGE_BIT, /* change dete 188 FD_DISK_NEWCHANGE_BIT, /* change detected, and no action undertaken yet
189 * to clear me 189 * to clear media change status */
190 FD_UNUSED_BIT, 190 FD_UNUSED_BIT,
191 FD_DISK_CHANGED_BIT, /* disk has be 191 FD_DISK_CHANGED_BIT, /* disk has been changed since last i/o */
192 FD_DISK_WRITABLE_BIT, /* disk is wri 192 FD_DISK_WRITABLE_BIT, /* disk is writable */
193 FD_OPEN_SHOULD_FAIL_BIT 193 FD_OPEN_SHOULD_FAIL_BIT
194 }; 194 };
195 195
196 #define FDSETDRVPRM _IOW(2, 0x90, struct flopp 196 #define FDSETDRVPRM _IOW(2, 0x90, struct floppy_drive_params)
197 #define FDGETDRVPRM _IOR(2, 0x11, struct flopp 197 #define FDGETDRVPRM _IOR(2, 0x11, struct floppy_drive_params)
198 /* set/get drive parameters */ 198 /* set/get drive parameters */
199 199
200 200
201 /* 201 /*
202 * Current drive state (not directly modifiabl 202 * Current drive state (not directly modifiable by user, readonly)
203 */ 203 */
204 struct floppy_drive_struct { 204 struct floppy_drive_struct {
205 unsigned long flags; 205 unsigned long flags;
206 /* values for these flags */ 206 /* values for these flags */
207 #define FD_NEED_TWADDLE (1 << FD_NEED_TWADDLE_ 207 #define FD_NEED_TWADDLE (1 << FD_NEED_TWADDLE_BIT)
208 #define FD_VERIFY (1 << FD_VERIFY_BIT) 208 #define FD_VERIFY (1 << FD_VERIFY_BIT)
209 #define FD_DISK_NEWCHANGE (1 << FD_DISK_NEWCHA 209 #define FD_DISK_NEWCHANGE (1 << FD_DISK_NEWCHANGE_BIT)
210 #define FD_DISK_CHANGED (1 << FD_DISK_CHANGED_ 210 #define FD_DISK_CHANGED (1 << FD_DISK_CHANGED_BIT)
211 #define FD_DISK_WRITABLE (1 << FD_DISK_WRITABL 211 #define FD_DISK_WRITABLE (1 << FD_DISK_WRITABLE_BIT)
212 212
213 unsigned long spinup_date; 213 unsigned long spinup_date;
214 unsigned long select_date; 214 unsigned long select_date;
215 unsigned long first_read_date; 215 unsigned long first_read_date;
216 short probed_format; 216 short probed_format;
217 short track; /* current track */ 217 short track; /* current track */
218 short maxblock; /* id of highest block 218 short maxblock; /* id of highest block read */
219 short maxtrack; /* id of highest half 219 short maxtrack; /* id of highest half track read */
220 int generation; /* how many diskchange 220 int generation; /* how many diskchanges? */
221 221
222 /* 222 /*
223 * (User-provided) media information is _not_ 223 * (User-provided) media information is _not_ discarded after a media change
224 * if the corresponding keep_data flag is non- 224 * if the corresponding keep_data flag is non-zero. Positive values are
225 * decremented after each probe. 225 * decremented after each probe.
226 */ 226 */
227 int keep_data; 227 int keep_data;
228 228
229 /* Prevent "aliased" accesses. */ 229 /* Prevent "aliased" accesses. */
230 int fd_ref; 230 int fd_ref;
231 int fd_device; 231 int fd_device;
232 unsigned long last_checked; /* when wa 232 unsigned long last_checked; /* when was the drive last checked for a disk
233 * change? */ 233 * change? */
234 234
235 char *dmabuf; 235 char *dmabuf;
236 int bufblocks; 236 int bufblocks;
237 }; 237 };
238 238
239 #define FDGETDRVSTAT _IOR(2, 0x12, struct flop 239 #define FDGETDRVSTAT _IOR(2, 0x12, struct floppy_drive_struct)
240 #define FDPOLLDRVSTAT _IOR(2, 0x13, struct flo 240 #define FDPOLLDRVSTAT _IOR(2, 0x13, struct floppy_drive_struct)
241 /* get drive state: GET returns the cached sta 241 /* get drive state: GET returns the cached state, POLL polls for new state */
242 242
243 243
244 /* 244 /*
245 * reset FDC 245 * reset FDC
246 */ 246 */
247 enum reset_mode { 247 enum reset_mode {
248 FD_RESET_IF_NEEDED, /* reset only 248 FD_RESET_IF_NEEDED, /* reset only if the reset flags is set */
249 FD_RESET_IF_RAWCMD, /* obsolete */ 249 FD_RESET_IF_RAWCMD, /* obsolete */
250 FD_RESET_ALWAYS /* reset alway 250 FD_RESET_ALWAYS /* reset always */
251 }; 251 };
252 #define FDRESET _IO(2, 0x54) 252 #define FDRESET _IO(2, 0x54)
253 253
254 254
255 /* 255 /*
256 * FDC state 256 * FDC state
257 */ 257 */
258 struct floppy_fdc_state { 258 struct floppy_fdc_state {
259 int spec1; /* spec1 value 259 int spec1; /* spec1 value last used */
260 int spec2; /* spec2 value 260 int spec2; /* spec2 value last used */
261 int dtr; 261 int dtr;
262 unsigned char version; /* FDC version 262 unsigned char version; /* FDC version code */
263 unsigned char dor; 263 unsigned char dor;
264 unsigned long address; /* io address 264 unsigned long address; /* io address */
265 unsigned int rawcmd:2; 265 unsigned int rawcmd:2;
266 unsigned int reset:1; 266 unsigned int reset:1;
267 unsigned int need_configure:1; 267 unsigned int need_configure:1;
268 unsigned int perp_mode:2; 268 unsigned int perp_mode:2;
269 unsigned int has_fifo:1; 269 unsigned int has_fifo:1;
270 unsigned int driver_version; /* ver 270 unsigned int driver_version; /* version code for floppy driver */
271 #define FD_DRIVER_VERSION 0x100 271 #define FD_DRIVER_VERSION 0x100
272 /* user programs using the floppy API should u 272 /* user programs using the floppy API should use floppy_fdc_state to
273 * get the version number of the floppy driver 273 * get the version number of the floppy driver that they are running
274 * on. If this version number is bigger than t 274 * on. If this version number is bigger than the one compiled into the
275 * user program (the FD_DRIVER_VERSION define) 275 * user program (the FD_DRIVER_VERSION define), it should be prepared
276 * to bigger structures 276 * to bigger structures
277 */ 277 */
278 278
279 unsigned char track[4]; 279 unsigned char track[4];
280 /* Position of the heads of the 4 unit 280 /* Position of the heads of the 4 units attached to this FDC,
281 * as stored on the FDC. In the future 281 * as stored on the FDC. In the future, the position as stored
282 * on the FDC might not agree with the 282 * on the FDC might not agree with the actual physical
283 * position of these drive heads. By a 283 * position of these drive heads. By allowing such
284 * disagreement, it will be possible t 284 * disagreement, it will be possible to reset the FDC without
285 * incurring the expensive cost of rep 285 * incurring the expensive cost of repositioning all heads.
286 * Right now, these positions are hard 286 * Right now, these positions are hard wired to 0. */
287 287
288 }; 288 };
289 289
290 #define FDGETFDCSTAT _IOR(2, 0x15, struct flop 290 #define FDGETFDCSTAT _IOR(2, 0x15, struct floppy_fdc_state)
291 291
292 292
293 /* 293 /*
294 * Asynchronous Write error tracking 294 * Asynchronous Write error tracking
295 */ 295 */
296 struct floppy_write_errors { 296 struct floppy_write_errors {
297 /* Write error logging. 297 /* Write error logging.
298 * 298 *
299 * These fields can be cleared with th 299 * These fields can be cleared with the FDWERRORCLR ioctl.
300 * Only writes that were attempted but 300 * Only writes that were attempted but failed due to a physical media
301 * error are logged. write(2) calls t 301 * error are logged. write(2) calls that fail and return an error code
302 * to the user process are not counted 302 * to the user process are not counted.
303 */ 303 */
304 304
305 unsigned int write_errors; /* number 305 unsigned int write_errors; /* number of physical write errors
306 * encount 306 * encountered */
307 307
308 /* position of first and last write er 308 /* position of first and last write errors */
309 unsigned long first_error_sector; 309 unsigned long first_error_sector;
310 int first_error_generation; 310 int first_error_generation;
311 unsigned long last_error_sector; 311 unsigned long last_error_sector;
312 int last_error_generation; 312 int last_error_generation;
313 313
314 unsigned int badness; /* highest retry 314 unsigned int badness; /* highest retry count for a read or write
315 * operation */ 315 * operation */
316 }; 316 };
317 317
318 #define FDWERRORCLR _IO(2, 0x56) 318 #define FDWERRORCLR _IO(2, 0x56)
319 /* clear write error and badness information * 319 /* clear write error and badness information */
320 #define FDWERRORGET _IOR(2, 0x17, struct flop 320 #define FDWERRORGET _IOR(2, 0x17, struct floppy_write_errors)
321 /* get write error and badness information */ 321 /* get write error and badness information */
322 322
323 323
324 /* 324 /*
325 * Raw commands 325 * Raw commands
326 */ 326 */
327 /* new interface flag: now we can do them in b 327 /* new interface flag: now we can do them in batches */
328 #define FDHAVEBATCHEDRAWCMD 328 #define FDHAVEBATCHEDRAWCMD
329 329
330 struct floppy_raw_cmd { 330 struct floppy_raw_cmd {
331 unsigned int flags; 331 unsigned int flags;
332 #define FD_RAW_READ 1 332 #define FD_RAW_READ 1
333 #define FD_RAW_WRITE 2 333 #define FD_RAW_WRITE 2
334 #define FD_RAW_NO_MOTOR 4 334 #define FD_RAW_NO_MOTOR 4
335 #define FD_RAW_DISK_CHANGE 4 /* out: disk chan 335 #define FD_RAW_DISK_CHANGE 4 /* out: disk change flag was set */
336 #define FD_RAW_INTR 8 /* wait for an interr 336 #define FD_RAW_INTR 8 /* wait for an interrupt */
337 #define FD_RAW_SPIN 0x10 /* spin up the disk f 337 #define FD_RAW_SPIN 0x10 /* spin up the disk for this command */
338 #define FD_RAW_NO_MOTOR_AFTER 0x20 /* switch t 338 #define FD_RAW_NO_MOTOR_AFTER 0x20 /* switch the motor off after command
339 * completi 339 * completion */
340 #define FD_RAW_NEED_DISK 0x40 /* this command 340 #define FD_RAW_NEED_DISK 0x40 /* this command needs a disk to be present */
341 #define FD_RAW_NEED_SEEK 0x80 /* this command 341 #define FD_RAW_NEED_SEEK 0x80 /* this command uses an implied seek (soft) */
342 342
343 /* more "in" flags */ 343 /* more "in" flags */
344 #define FD_RAW_MORE 0x100 /* more records fol 344 #define FD_RAW_MORE 0x100 /* more records follow */
345 #define FD_RAW_STOP_IF_FAILURE 0x200 /* stop i 345 #define FD_RAW_STOP_IF_FAILURE 0x200 /* stop if we encounter a failure */
346 #define FD_RAW_STOP_IF_SUCCESS 0x400 /* stop i 346 #define FD_RAW_STOP_IF_SUCCESS 0x400 /* stop if command successful */
347 #define FD_RAW_SOFTFAILURE 0x800 /* consider t 347 #define FD_RAW_SOFTFAILURE 0x800 /* consider the return value for failure
348 * detection 348 * detection too */
349 349
350 /* more "out" flags */ 350 /* more "out" flags */
351 #define FD_RAW_FAILURE 0x10000 /* command sent 351 #define FD_RAW_FAILURE 0x10000 /* command sent to fdc, fdc returned error */
352 #define FD_RAW_HARDFAILURE 0x20000 /* fdc had 352 #define FD_RAW_HARDFAILURE 0x20000 /* fdc had to be reset, or timed out */
353 353
354 void __user *data; 354 void __user *data;
355 char *kernel_data; /* location of data 355 char *kernel_data; /* location of data buffer in the kernel */
356 struct floppy_raw_cmd *next; /* used f 356 struct floppy_raw_cmd *next; /* used for chaining of raw cmd's
357 * within 357 * within the kernel */
358 long length; /* in: length of dma tran 358 long length; /* in: length of dma transfer. out: remaining bytes */
359 long phys_length; /* physical length, 359 long phys_length; /* physical length, if different from dma length */
360 int buffer_length; /* length of alloca 360 int buffer_length; /* length of allocated buffer */
361 361
362 unsigned char rate; 362 unsigned char rate;
363 363
364 #define FD_RAW_CMD_SIZE 16 364 #define FD_RAW_CMD_SIZE 16
365 #define FD_RAW_REPLY_SIZE 16 365 #define FD_RAW_REPLY_SIZE 16
366 #define FD_RAW_CMD_FULLSIZE (FD_RAW_CMD_SIZE + 366 #define FD_RAW_CMD_FULLSIZE (FD_RAW_CMD_SIZE + 1 + FD_RAW_REPLY_SIZE)
367 367
368 /* The command may take up the space i 368 /* The command may take up the space initially intended for the reply
369 * and the reply count. Needed for lon 369 * and the reply count. Needed for long 82078 commands such as RESTORE,
370 * which takes 17 command bytes. 370 * which takes 17 command bytes.
371 */ 371 */
372 372
373 unsigned char cmd_count; 373 unsigned char cmd_count;
374 union { 374 union {
375 struct { 375 struct {
376 unsigned char cmd[FD_R 376 unsigned char cmd[FD_RAW_CMD_SIZE];
377 unsigned char reply_co 377 unsigned char reply_count;
378 unsigned char reply[FD 378 unsigned char reply[FD_RAW_REPLY_SIZE];
379 }; 379 };
380 unsigned char fullcmd[FD_RAW_C 380 unsigned char fullcmd[FD_RAW_CMD_FULLSIZE];
381 }; 381 };
382 int track; 382 int track;
383 int resultcode; 383 int resultcode;
384 384
385 int reserved1; 385 int reserved1;
386 int reserved2; 386 int reserved2;
387 }; 387 };
388 388
389 #define FDRAWCMD _IO(2, 0x58) 389 #define FDRAWCMD _IO(2, 0x58)
390 /* send a raw command to the fdc. Structure si 390 /* send a raw command to the fdc. Structure size not included, because of
391 * batches */ 391 * batches */
392 392
393 #define FDTWADDLE _IO(2, 0x59) 393 #define FDTWADDLE _IO(2, 0x59)
394 /* flicker motor-on bit before reading a secto 394 /* flicker motor-on bit before reading a sector. Experimental */
395 395
396 396
397 #define FDEJECT _IO(2, 0x5a) 397 #define FDEJECT _IO(2, 0x5a)
398 /* eject the disk */ 398 /* eject the disk */
399 399
400 400
401 401
402 #endif /* _UAPI_LINUX_FD_H */ 402 #endif /* _UAPI_LINUX_FD_H */
403 403
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