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 modifiable) 117 */ 118 struct floppy_drive_params { 119 signed 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 /* must be 0x80, because of hardware 157 considerations */ 158 159 char read_track; /* use readtrack during probing? */ 160 161 /* 162 * Auto-detection. Each drive type has eight formats which are 163 * used in succession to try to read the disk. If the FDC cannot lock onto 164 * the disk, the next format is tried. This uses the variable 'probing'. 165 */ 166 short autodetect[8]; /* autodetected formats */ 167 168 int checkfreq; /* how often should the drive be checked for disk 169 * changes */ 170 int native_format; /* native format of this drive */ 171 }; 172 173 enum { 174 FD_NEED_TWADDLE_BIT, /* more magic */ 175 FD_VERIFY_BIT, /* inquire for write protection */ 176 FD_DISK_NEWCHANGE_BIT, /* change detected, and no action undertaken yet 177 * to clear media change status */ 178 FD_UNUSED_BIT, 179 FD_DISK_CHANGED_BIT, /* disk has been changed since last i/o */ 180 FD_DISK_WRITABLE_BIT /* disk is writable */ 181 }; 182 183 #define FDSETDRVPRM _IOW(2, 0x90, struct floppy_drive_params) 184 #define FDGETDRVPRM _IOR(2, 0x11, struct floppy_drive_params) 185 /* set/get drive parameters */ 186 187 188 /* 189 * Current drive state (not directly modifiable by user, readonly) 190 */ 191 struct floppy_drive_struct { 192 unsigned long flags; 193 /* values for these flags */ 194 #define FD_NEED_TWADDLE (1 << FD_NEED_TWADDLE_BIT) 195 #define FD_VERIFY (1 << FD_VERIFY_BIT) 196 #define FD_DISK_NEWCHANGE (1 << FD_DISK_NEWCHANGE_BIT) 197 #define FD_DISK_CHANGED (1 << FD_DISK_CHANGED_BIT) 198 #define FD_DISK_WRITABLE (1 << FD_DISK_WRITABLE_BIT) 199 200 unsigned long spinup_date; 201 unsigned long select_date; 202 unsigned long first_read_date; 203 short probed_format; 204 short track; /* current track */ 205 short maxblock; /* id of highest block read */ 206 short maxtrack; /* id of highest half track read */ 207 int generation; /* how many diskchanges? */ 208 209 /* 210 * (User-provided) media information is _not_ discarded after a media change 211 * if the corresponding keep_data flag is non-zero. Positive values are 212 * decremented after each probe. 213 */ 214 int keep_data; 215 216 /* Prevent "aliased" accesses. */ 217 int fd_ref; 218 int fd_device; 219 unsigned long last_checked; /* when was the drive last checked for a disk 220 * change? */ 221 222 char *dmabuf; 223 int bufblocks; 224 }; 225 226 #define FDGETDRVSTAT _IOR(2, 0x12, struct floppy_drive_struct) 227 #define FDPOLLDRVSTAT _IOR(2, 0x13, struct floppy_drive_struct) 228 /* get drive state: GET returns the cached state, POLL polls for new state */ 229 230 231 /* 232 * reset FDC 233 */ 234 enum reset_mode { 235 FD_RESET_IF_NEEDED, /* reset only if the reset flags is set */ 236 FD_RESET_IF_RAWCMD, /* obsolete */ 237 FD_RESET_ALWAYS /* reset always */ 238 }; 239 #define FDRESET _IO(2, 0x54) 240 241 242 /* 243 * FDC state 244 */ 245 struct floppy_fdc_state { 246 int spec1; /* spec1 value last used */ 247 int spec2; /* spec2 value last used */ 248 int dtr; 249 unsigned char version; /* FDC version code */ 250 unsigned char dor; 251 unsigned long address; /* io address */ 252 unsigned int rawcmd:2; 253 unsigned int reset:1; 254 unsigned int need_configure:1; 255 unsigned int perp_mode:2; 256 unsigned int has_fifo:1; 257 unsigned int driver_version; /* version code for floppy driver */ 258 #define FD_DRIVER_VERSION 0x100 259 /* user programs using the floppy API should use floppy_fdc_state to 260 * get the version number of the floppy driver that they are running 261 * on. If this version number is bigger than the one compiled into the 262 * user program (the FD_DRIVER_VERSION define), it should be prepared 263 * to bigger structures 264 */ 265 266 unsigned char track[4]; 267 /* Position of the heads of the 4 units attached to this FDC, 268 * as stored on the FDC. In the future, the position as stored 269 * on the FDC might not agree with the actual physical 270 * position of these drive heads. By allowing such 271 * disagreement, it will be possible to reset the FDC without 272 * incurring the expensive cost of repositioning all heads. 273 * Right now, these positions are hard wired to 0. */ 274 275 }; 276 277 #define FDGETFDCSTAT _IOR(2, 0x15, struct floppy_fdc_state) 278 279 280 /* 281 * Asynchronous Write error tracking 282 */ 283 struct floppy_write_errors { 284 /* Write error logging. 285 * 286 * These fields can be cleared with the FDWERRORCLR ioctl. 287 * Only writes that were attempted but failed due to a physical media 288 * error are logged. write(2) calls that fail and return an error code 289 * to the user process are not counted. 290 */ 291 292 unsigned int write_errors; /* number of physical write errors 293 * encountered */ 294 295 /* position of first and last write errors */ 296 unsigned long first_error_sector; 297 int first_error_generation; 298 unsigned long last_error_sector; 299 int last_error_generation; 300 301 unsigned int badness; /* highest retry count for a read or write 302 * operation */ 303 }; 304 305 #define FDWERRORCLR _IO(2, 0x56) 306 /* clear write error and badness information */ 307 #define FDWERRORGET _IOR(2, 0x17, struct floppy_write_errors) 308 /* get write error and badness information */ 309 310 311 /* 312 * Raw commands 313 */ 314 /* new interface flag: now we can do them in batches */ 315 #define FDHAVEBATCHEDRAWCMD 316 317 struct floppy_raw_cmd { 318 unsigned int flags; 319 #define FD_RAW_READ 1 320 #define FD_RAW_WRITE 2 321 #define FD_RAW_NO_MOTOR 4 322 #define FD_RAW_DISK_CHANGE 4 /* out: disk change flag was set */ 323 #define FD_RAW_INTR 8 /* wait for an interrupt */ 324 #define FD_RAW_SPIN 0x10 /* spin up the disk for this command */ 325 #define FD_RAW_NO_MOTOR_AFTER 0x20 /* switch the motor off after command 326 * completion */ 327 #define FD_RAW_NEED_DISK 0x40 /* this command needs a disk to be present */ 328 #define FD_RAW_NEED_SEEK 0x80 /* this command uses an implied seek (soft) */ 329 330 /* more "in" flags */ 331 #define FD_RAW_MORE 0x100 /* more records follow */ 332 #define FD_RAW_STOP_IF_FAILURE 0x200 /* stop if we encounter a failure */ 333 #define FD_RAW_STOP_IF_SUCCESS 0x400 /* stop if command successful */ 334 #define FD_RAW_SOFTFAILURE 0x800 /* consider the return value for failure 335 * detection too */ 336 337 /* more "out" flags */ 338 #define FD_RAW_FAILURE 0x10000 /* command sent to fdc, fdc returned error */ 339 #define FD_RAW_HARDFAILURE 0x20000 /* fdc had to be reset, or timed out */ 340 341 void *data; 342 char *kernel_data; /* location of data buffer in the kernel */ 343 struct floppy_raw_cmd *next; /* used for chaining of raw cmd's 344 * within the kernel */ 345 long length; /* in: length of dma transfer. out: remaining bytes */ 346 long phys_length; /* physical length, if different from dma length */ 347 int buffer_length; /* length of allocated buffer */ 348 349 unsigned char rate; 350 unsigned char cmd_count; 351 unsigned char cmd[16]; 352 unsigned char reply_count; 353 unsigned char reply[16]; 354 int track; 355 int resultcode; 356 357 int reserved1; 358 int reserved2; 359 }; 360 361 #define FDRAWCMD _IO(2, 0x58) 362 /* send a raw command to the fdc. Structure size not included, because of 363 * batches */ 364 365 #define FDTWADDLE _IO(2, 0x59) 366 /* flicker motor-on bit before reading a sector. Experimental */ 367 368 369 #define FDEJECT _IO(2, 0x5a) 370 /* eject the disk */ 371 372 #endif 373