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