1 /* 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Don Ahn. 7 * 8 * Libretto PCMCIA floppy support by David Horwitt (dhorwitt@ucsd.edu) 9 * aided by the Linux floppy driver modifications from David Bateman 10 * (dbateman@eng.uts.edu.au). 11 * 12 * Copyright (c) 1993, 1994 by 13 * jc@irbs.UUCP (John Capo) 14 * vak@zebub.msk.su (Serge Vakulenko) 15 * ache@astral.msk.su (Andrew A. Chernov) 16 * 17 * Copyright (c) 1993, 1994, 1995 by 18 * joerg_wunsch@uriah.sax.de (Joerg Wunsch) 19 * dufault@hda.com (Peter Dufault) 20 * 21 * Copyright (c) 2001 Joerg Wunsch, 22 * joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) 23 * 24 * Redistribution and use in source and binary forms, with or without 25 * modification, are permitted provided that the following conditions 26 * are met: 27 * 1. Redistributions of source code must retain the above copyright 28 * notice, this list of conditions and the following disclaimer. 29 * 2. Redistributions in binary form must reproduce the above copyright 30 * notice, this list of conditions and the following disclaimer in the 31 * documentation and/or other materials provided with the distribution. 32 * 3. All advertising materials mentioning features or use of this software 33 * must display the following acknowledgement: 34 * This product includes software developed by the University of 35 * California, Berkeley and its contributors. 36 * 4. Neither the name of the University nor the names of its contributors 37 * may be used to endorse or promote products derived from this software 38 * without specific prior written permission. 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * from: @(#)fd.c 7.4 (Berkeley) 5/25/91 53 * $FreeBSD$ 54 */ 55 56 #include "opt_fdc.h" 57 #include "card.h" 58 59 #include <sys/param.h> 60 #include <sys/systm.h> 61 #include <sys/bio.h> 62 #include <sys/bus.h> 63 #include <sys/conf.h> 64 #include <sys/devicestat.h> 65 #include <sys/disklabel.h> 66 #include <sys/fcntl.h> 67 #include <sys/fdcio.h> 68 #include <sys/filio.h> 69 #include <sys/kernel.h> 70 #include <sys/lock.h> 71 #include <sys/malloc.h> 72 #include <sys/module.h> 73 #include <sys/mutex.h> 74 #include <sys/proc.h> 75 #include <sys/syslog.h> 76 77 #include <machine/bus.h> 78 #include <sys/rman.h> 79 80 #include <machine/clock.h> 81 #include <machine/resource.h> 82 #include <machine/stdarg.h> 83 84 #include <isa/isavar.h> 85 #include <isa/isareg.h> 86 #include <isa/fdreg.h> 87 #include <isa/rtc.h> 88 89 enum fdc_type 90 { 91 FDC_NE765, FDC_ENHANCED, FDC_UNKNOWN = -1 92 }; 93 94 enum fdc_states { 95 DEVIDLE, 96 FINDWORK, 97 DOSEEK, 98 SEEKCOMPLETE , 99 IOCOMPLETE, 100 RECALCOMPLETE, 101 STARTRECAL, 102 RESETCTLR, 103 SEEKWAIT, 104 RECALWAIT, 105 MOTORWAIT, 106 IOTIMEDOUT, 107 RESETCOMPLETE, 108 PIOREAD 109 }; 110 111 #ifdef FDC_DEBUG 112 static char const * const fdstates[] = { 113 "DEVIDLE", 114 "FINDWORK", 115 "DOSEEK", 116 "SEEKCOMPLETE", 117 "IOCOMPLETE", 118 "RECALCOMPLETE", 119 "STARTRECAL", 120 "RESETCTLR", 121 "SEEKWAIT", 122 "RECALWAIT", 123 "MOTORWAIT", 124 "IOTIMEDOUT", 125 "RESETCOMPLETE", 126 "PIOREAD" 127 }; 128 #endif 129 130 /* 131 * Per controller structure (softc). 132 */ 133 struct fdc_data 134 { 135 int fdcu; /* our unit number */ 136 int dmachan; 137 int flags; 138 #define FDC_ATTACHED 0x01 139 #define FDC_STAT_VALID 0x08 140 #define FDC_HAS_FIFO 0x10 141 #define FDC_NEEDS_RESET 0x20 142 #define FDC_NODMA 0x40 143 #define FDC_ISPNP 0x80 144 #define FDC_ISPCMCIA 0x100 145 struct fd_data *fd; 146 int fdu; /* the active drive */ 147 enum fdc_states state; 148 int retry; 149 int fdout; /* mirror of the w/o digital output reg */ 150 u_int status[7]; /* copy of the registers */ 151 enum fdc_type fdct; /* chip version of FDC */ 152 int fdc_errs; /* number of logged errors */ 153 int dma_overruns; /* number of DMA overruns */ 154 struct bio_queue_head head; 155 struct bio *bp; /* active buffer */ 156 struct resource *res_ioport, *res_ctl, *res_irq, *res_drq; 157 int rid_ioport, rid_ctl, rid_irq, rid_drq; 158 int port_off; 159 bus_space_tag_t portt; 160 bus_space_handle_t porth; 161 bus_space_tag_t ctlt; 162 bus_space_handle_t ctlh; 163 void *fdc_intr; 164 struct device *fdc_dev; 165 void (*fdctl_wr)(struct fdc_data *fdc, u_int8_t v); 166 }; 167 168 typedef int fdu_t; 169 typedef int fdcu_t; 170 typedef int fdsu_t; 171 typedef struct fd_data *fd_p; 172 typedef struct fdc_data *fdc_p; 173 typedef enum fdc_type fdc_t; 174 175 #define FDUNIT(s) (((s) >> 6) & 3) 176 #define FDNUMTOUNIT(n) (((n) & 3) << 6) 177 #define FDTYPE(s) ((s) & 0x3f) 178 179 /* 180 * fdc maintains a set (1!) of ivars per child of each controller. 181 */ 182 enum fdc_device_ivars { 183 FDC_IVAR_FDUNIT, 184 }; 185 186 /* 187 * Simple access macros for the ivars. 188 */ 189 #define FDC_ACCESSOR(A, B, T) \ 190 static __inline T fdc_get_ ## A(device_t dev) \ 191 { \ 192 uintptr_t v; \ 193 BUS_READ_IVAR(device_get_parent(dev), dev, FDC_IVAR_ ## B, &v); \ 194 return (T) v; \ 195 } 196 FDC_ACCESSOR(fdunit, FDUNIT, int) 197 198 /* configuration flags for fdc */ 199 #define FDC_NO_FIFO (1 << 2) /* do not enable FIFO */ 200 201 /* error returns for fd_cmd() */ 202 #define FD_FAILED -1 203 #define FD_NOT_VALID -2 204 #define FDC_ERRMAX 100 /* do not log more */ 205 /* 206 * Stop retrying after this many DMA overruns. Since each retry takes 207 * one revolution, with 300 rpm., 25 retries take approximately 5 208 * seconds which the read attempt will block in case the DMA overrun 209 * is persistent. 210 */ 211 #define FDC_DMAOV_MAX 25 212 213 /* 214 * Number of subdevices that can be used for different density types. 215 * By now, the lower 6 bit of the minor number are reserved for this, 216 * allowing for up to 64 subdevices, but we only use 16 out of this. 217 * Density #0 is used for automatic format detection, the other 218 * densities are available as programmable densities (for assignment 219 * by fdcontrol(8)). 220 * The upper 2 bits of the minor number are reserved for the subunit 221 * (drive #) per controller. 222 */ 223 #define NUMDENS 16 224 225 #define BIO_RDSECTID BIO_CMD1 226 227 /* 228 * List of native drive densities. Order must match enum fd_drivetype 229 * in <sys/fdcio.h>. Upon attaching the drive, each of the 230 * programmable subdevices is initialized with the native density 231 * definition. 232 */ 233 static struct fd_type fd_native_types[] = 234 { 235 { 0 }, /* FDT_NONE */ 236 { 9,2,0xFF,0x2A,40, 720,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* FDT_360K */ 237 { 15,2,0xFF,0x1B,80,2400,FDC_500KBPS,2,0x54,1,0,FL_MFM }, /* FDT_12M */ 238 { 9,2,0xFF,0x20,80,1440,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* FDT_720K */ 239 { 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* FDT_144M */ 240 #if 0 /* we currently don't handle 2.88 MB */ 241 { 36,2,0xFF,0x1B,80,5760,FDC_1MBPS, 2,0x4C,1,1,FL_MFM|FL_PERPND } /*FDT_288M*/ 242 #else 243 { 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* FDT_144M */ 244 #endif 245 }; 246 247 /* 248 * 360 KB 5.25" and 720 KB 3.5" drives don't have automatic density 249 * selection, they just start out with their native density (or lose). 250 * So 1.2 MB 5.25", 1.44 MB 3.5", and 2.88 MB 3.5" drives have their 251 * respective lists of densities to search for. 252 */ 253 static struct fd_type fd_searchlist_12m[] = { 254 { 15,2,0xFF,0x1B,80,2400,FDC_500KBPS,2,0x54,1,0,FL_MFM }, /* 1.2M */ 255 { 9,2,0xFF,0x23,40, 720,FDC_300KBPS,2,0x50,1,0,FL_MFM|FL_2STEP }, /* 360K */ 256 { 9,2,0xFF,0x20,80,1440,FDC_300KBPS,2,0x50,1,0,FL_MFM }, /* 720K */ 257 }; 258 259 static struct fd_type fd_searchlist_144m[] = { 260 { 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* 1.44M */ 261 { 9,2,0xFF,0x20,80,1440,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* 720K */ 262 }; 263 264 /* We search for 1.44M first since this is the most common case. */ 265 static struct fd_type fd_searchlist_288m[] = { 266 { 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* 1.44M */ 267 #if 0 268 { 36,2,0xFF,0x1B,80,5760,FDC_1MBPS, 2,0x4C,1,1,FL_MFM|FL_PERPND } /* 2.88M */ 269 #endif 270 { 9,2,0xFF,0x20,80,1440,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* 720K */ 271 }; 272 273 #define MAX_SEC_SIZE (128 << 3) 274 #define MAX_CYLINDER 85 /* some people really stress their drives 275 * up to cyl 82 */ 276 #define MAX_HEAD 1 277 278 static devclass_t fdc_devclass; 279 280 /* 281 * Per drive structure (softc). 282 */ 283 struct fd_data { 284 struct fdc_data *fdc; /* pointer to controller structure */ 285 int fdsu; /* this units number on this controller */ 286 enum fd_drivetype type; /* drive type */ 287 struct fd_type *ft; /* pointer to current type descriptor */ 288 struct fd_type fts[NUMDENS]; /* type descriptors */ 289 int flags; 290 #define FD_OPEN 0x01 /* it's open */ 291 #define FD_NONBLOCK 0x02 /* O_NONBLOCK set */ 292 #define FD_ACTIVE 0x04 /* it's active */ 293 #define FD_MOTOR 0x08 /* motor should be on */ 294 #define FD_MOTOR_WAIT 0x10 /* motor coming up */ 295 #define FD_UA 0x20 /* force unit attention */ 296 int skip; 297 int hddrv; 298 #define FD_NO_TRACK -2 299 int track; /* where we think the head is */ 300 int options; /* user configurable options, see fdcio.h */ 301 struct callout_handle toffhandle; 302 struct callout_handle tohandle; 303 struct devstat device_stats; 304 eventhandler_tag clonetag; 305 dev_t masterdev; 306 dev_t clonedevs[NUMDENS - 1]; 307 device_t dev; 308 fdu_t fdu; 309 }; 310 311 struct fdc_ivars { 312 int fdunit; 313 }; 314 static devclass_t fd_devclass; 315 316 /* configuration flags for fd */ 317 #define FD_TYPEMASK 0x0f /* drive type, matches enum 318 * fd_drivetype; on i386 machines, if 319 * given as 0, use RTC type for fd0 320 * and fd1 */ 321 #define FD_DTYPE(flags) ((flags) & FD_TYPEMASK) 322 #define FD_NO_CHLINE 0x10 /* drive does not support changeline 323 * aka. unit attention */ 324 #define FD_NO_PROBE 0x20 /* don't probe drive (seek test), just 325 * assume it is there */ 326 327 /* 328 * Throughout this file the following conventions will be used: 329 * 330 * fd is a pointer to the fd_data struct for the drive in question 331 * fdc is a pointer to the fdc_data struct for the controller 332 * fdu is the floppy drive unit number 333 * fdcu is the floppy controller unit number 334 * fdsu is the floppy drive unit number on that controller. (sub-unit) 335 */ 336 337 /* 338 * Function declarations, same (chaotic) order as they appear in the 339 * file. Re-ordering is too late now, it would only obfuscate the 340 * diffs against old and offspring versions (like the PC98 one). 341 * 342 * Anyone adding functions here, please keep this sequence the same 343 * as below -- makes locating a particular function in the body much 344 * easier. 345 */ 346 static void fdout_wr(fdc_p, u_int8_t); 347 static u_int8_t fdsts_rd(fdc_p); 348 static void fddata_wr(fdc_p, u_int8_t); 349 static u_int8_t fddata_rd(fdc_p); 350 static void fdctl_wr_isa(fdc_p, u_int8_t); 351 #if NCARD > 0 352 static void fdctl_wr_pcmcia(fdc_p, u_int8_t); 353 #endif 354 #if 0 355 static u_int8_t fdin_rd(fdc_p); 356 #endif 357 static int fdc_err(struct fdc_data *, const char *); 358 static int fd_cmd(struct fdc_data *, int, ...); 359 static int enable_fifo(fdc_p fdc); 360 static int fd_sense_drive_status(fdc_p, int *); 361 static int fd_sense_int(fdc_p, int *, int *); 362 static int fd_read_status(fdc_p); 363 static int fdc_alloc_resources(struct fdc_data *); 364 static void fdc_release_resources(struct fdc_data *); 365 static int fdc_read_ivar(device_t, device_t, int, uintptr_t *); 366 static int fdc_probe(device_t); 367 #if NCARD > 0 368 static int fdc_pccard_probe(device_t); 369 #endif 370 static int fdc_detach(device_t dev); 371 static void fdc_add_child(device_t, const char *, int); 372 static int fdc_attach(device_t); 373 static int fdc_print_child(device_t, device_t); 374 static void fd_clone (void *, char *, int, dev_t *); 375 static int fd_probe(device_t); 376 static int fd_attach(device_t); 377 static int fd_detach(device_t); 378 static void set_motor(struct fdc_data *, int, int); 379 # define TURNON 1 380 # define TURNOFF 0 381 static timeout_t fd_turnoff; 382 static timeout_t fd_motor_on; 383 static void fd_turnon(struct fd_data *); 384 static void fdc_reset(fdc_p); 385 static int fd_in(struct fdc_data *, int *); 386 static int out_fdc(struct fdc_data *, int); 387 /* 388 * The open function is named Fdopen() to avoid confusion with fdopen() 389 * in fd(4). The difference is now only meaningful for debuggers. 390 */ 391 static d_open_t Fdopen; 392 static d_close_t fdclose; 393 static d_strategy_t fdstrategy; 394 static void fdstart(struct fdc_data *); 395 static timeout_t fd_iotimeout; 396 static timeout_t fd_pseudointr; 397 static driver_intr_t fdc_intr; 398 static int fdcpio(fdc_p, long, caddr_t, u_int); 399 static int fdautoselect(dev_t); 400 static int fdstate(struct fdc_data *); 401 static int retrier(struct fdc_data *); 402 static void fdbiodone(struct bio *); 403 static int fdmisccmd(dev_t, u_int, void *); 404 static d_ioctl_t fdioctl; 405 406 static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */ 407 408 #ifdef FDC_DEBUG 409 /* CAUTION: fd_debug causes huge amounts of logging output */ 410 static int volatile fd_debug = 0; 411 #define TRACE0(arg) do { if (fd_debug) printf(arg); } while (0) 412 #define TRACE1(arg1, arg2) do { if (fd_debug) printf(arg1, arg2); } while (0) 413 #else /* FDC_DEBUG */ 414 #define TRACE0(arg) do { } while (0) 415 #define TRACE1(arg1, arg2) do { } while (0) 416 #endif /* FDC_DEBUG */ 417 418 /* 419 * Bus space handling (access to low-level IO). 420 */ 421 static void 422 fdout_wr(fdc_p fdc, u_int8_t v) 423 { 424 bus_space_write_1(fdc->portt, fdc->porth, FDOUT+fdc->port_off, v); 425 } 426 427 static u_int8_t 428 fdsts_rd(fdc_p fdc) 429 { 430 return bus_space_read_1(fdc->portt, fdc->porth, FDSTS+fdc->port_off); 431 } 432 433 static void 434 fddata_wr(fdc_p fdc, u_int8_t v) 435 { 436 bus_space_write_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off, v); 437 } 438 439 static u_int8_t 440 fddata_rd(fdc_p fdc) 441 { 442 return bus_space_read_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off); 443 } 444 445 static void 446 fdctl_wr_isa(fdc_p fdc, u_int8_t v) 447 { 448 bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v); 449 } 450 451 #if NCARD > 0 452 static void 453 fdctl_wr_pcmcia(fdc_p fdc, u_int8_t v) 454 { 455 bus_space_write_1(fdc->portt, fdc->porth, FDCTL+fdc->port_off, v); 456 } 457 #endif 458 459 static u_int8_t 460 fdin_rd(fdc_p fdc) 461 { 462 return bus_space_read_1(fdc->portt, fdc->porth, FDIN); 463 } 464 465 #define CDEV_MAJOR 9 466 static struct cdevsw fd_cdevsw = { 467 /* open */ Fdopen, 468 /* close */ fdclose, 469 /* read */ physread, 470 /* write */ physwrite, 471 /* ioctl */ fdioctl, 472 /* poll */ nopoll, 473 /* mmap */ nommap, 474 /* strategy */ fdstrategy, 475 /* name */ "fd", 476 /* maj */ CDEV_MAJOR, 477 /* dump */ nodump, 478 /* psize */ nopsize, 479 /* flags */ D_DISK, 480 }; 481 482 /* 483 * Auxiliary functions. Well, some only. Others are scattered 484 * throughout the entire file. 485 */ 486 static int 487 fdc_err(struct fdc_data *fdc, const char *s) 488 { 489 fdc->fdc_errs++; 490 if (s) { 491 if (fdc->fdc_errs < FDC_ERRMAX) 492 device_printf(fdc->fdc_dev, "%s", s); 493 else if (fdc->fdc_errs == FDC_ERRMAX) 494 device_printf(fdc->fdc_dev, "too many errors, not " 495 "logging any more\n"); 496 } 497 498 return FD_FAILED; 499 } 500 501 /* 502 * fd_cmd: Send a command to the chip. Takes a varargs with this structure: 503 * Unit number, 504 * # of output bytes, output bytes as ints ..., 505 * # of input bytes, input bytes as ints ... 506 */ 507 static int 508 fd_cmd(struct fdc_data *fdc, int n_out, ...) 509 { 510 u_char cmd; 511 int n_in; 512 int n; 513 va_list ap; 514 515 va_start(ap, n_out); 516 cmd = (u_char)(va_arg(ap, int)); 517 va_end(ap); 518 va_start(ap, n_out); 519 for (n = 0; n < n_out; n++) 520 { 521 if (out_fdc(fdc, va_arg(ap, int)) < 0) 522 { 523 char msg[50]; 524 snprintf(msg, sizeof(msg), 525 "cmd %x failed at out byte %d of %d\n", 526 cmd, n + 1, n_out); 527 return fdc_err(fdc, msg); 528 } 529 } 530 n_in = va_arg(ap, int); 531 for (n = 0; n < n_in; n++) 532 { 533 int *ptr = va_arg(ap, int *); 534 if (fd_in(fdc, ptr) < 0) 535 { 536 char msg[50]; 537 snprintf(msg, sizeof(msg), 538 "cmd %02x failed at in byte %d of %d\n", 539 cmd, n + 1, n_in); 540 return fdc_err(fdc, msg); 541 } 542 } 543 544 return 0; 545 } 546 547 static int 548 enable_fifo(fdc_p fdc) 549 { 550 int i, j; 551 552 if ((fdc->flags & FDC_HAS_FIFO) == 0) { 553 554 /* 555 * Cannot use fd_cmd the normal way here, since 556 * this might be an invalid command. Thus we send the 557 * first byte, and check for an early turn of data directon. 558 */ 559 560 if (out_fdc(fdc, I8207X_CONFIGURE) < 0) 561 return fdc_err(fdc, "Enable FIFO failed\n"); 562 563 /* If command is invalid, return */ 564 j = 100000; 565 while ((i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM)) 566 != NE7_RQM && j-- > 0) 567 if (i == (NE7_DIO | NE7_RQM)) { 568 fdc_reset(fdc); 569 return FD_FAILED; 570 } 571 if (j<0 || 572 fd_cmd(fdc, 3, 573 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) { 574 fdc_reset(fdc); 575 return fdc_err(fdc, "Enable FIFO failed\n"); 576 } 577 fdc->flags |= FDC_HAS_FIFO; 578 return 0; 579 } 580 if (fd_cmd(fdc, 4, 581 I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) 582 return fdc_err(fdc, "Re-enable FIFO failed\n"); 583 return 0; 584 } 585 586 static int 587 fd_sense_drive_status(fdc_p fdc, int *st3p) 588 { 589 int st3; 590 591 if (fd_cmd(fdc, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3)) 592 { 593 return fdc_err(fdc, "Sense Drive Status failed\n"); 594 } 595 if (st3p) 596 *st3p = st3; 597 598 return 0; 599 } 600 601 static int 602 fd_sense_int(fdc_p fdc, int *st0p, int *cylp) 603 { 604 int cyl, st0, ret; 605 606 ret = fd_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); 607 if (ret) { 608 (void)fdc_err(fdc, 609 "sense intr err reading stat reg 0\n"); 610 return ret; 611 } 612 613 if (st0p) 614 *st0p = st0; 615 616 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { 617 /* 618 * There doesn't seem to have been an interrupt. 619 */ 620 return FD_NOT_VALID; 621 } 622 623 if (fd_in(fdc, &cyl) < 0) { 624 return fdc_err(fdc, "can't get cyl num\n"); 625 } 626 627 if (cylp) 628 *cylp = cyl; 629 630 return 0; 631 } 632 633 634 static int 635 fd_read_status(fdc_p fdc) 636 { 637 int i, ret; 638 639 for (i = ret = 0; i < 7; i++) { 640 /* 641 * XXX types are poorly chosen. Only bytes can be read 642 * from the hardware, but fdc->status[] wants u_ints and 643 * fd_in() gives ints. 644 */ 645 int status; 646 647 ret = fd_in(fdc, &status); 648 fdc->status[i] = status; 649 if (ret != 0) 650 break; 651 } 652 653 if (ret == 0) 654 fdc->flags |= FDC_STAT_VALID; 655 else 656 fdc->flags &= ~FDC_STAT_VALID; 657 658 return ret; 659 } 660 661 static int 662 fdc_alloc_resources(struct fdc_data *fdc) 663 { 664 device_t dev; 665 int ispnp, ispcmcia, nports; 666 667 dev = fdc->fdc_dev; 668 ispnp = (fdc->flags & FDC_ISPNP) != 0; 669 ispcmcia = (fdc->flags & FDC_ISPCMCIA) != 0; 670 fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0; 671 fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0; 672 673 /* 674 * On standard ISA, we don't just use an 8 port range 675 * (e.g. 0x3f0-0x3f7) since that covers an IDE control 676 * register at 0x3f6. 677 * 678 * Isn't PC hardware wonderful. 679 * 680 * The Y-E Data PCMCIA FDC doesn't have this problem, it 681 * uses the register with offset 6 for pseudo-DMA, and the 682 * one with offset 7 as control register. 683 */ 684 nports = ispcmcia ? 8 : (ispnp ? 1 : 6); 685 fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT, 686 &fdc->rid_ioport, 0ul, ~0ul, 687 nports, RF_ACTIVE); 688 if (fdc->res_ioport == 0) { 689 device_printf(dev, "cannot reserve I/O port range (%d ports)\n", 690 nports); 691 return ENXIO; 692 } 693 fdc->portt = rman_get_bustag(fdc->res_ioport); 694 fdc->porth = rman_get_bushandle(fdc->res_ioport); 695 696 if (!ispcmcia) { 697 /* 698 * Some BIOSen report the device at 0x3f2-0x3f5,0x3f7 699 * and some at 0x3f0-0x3f5,0x3f7. We detect the former 700 * by checking the size and adjust the port address 701 * accordingly. 702 */ 703 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 0) == 4) 704 fdc->port_off = -2; 705 706 /* 707 * Register the control port range as rid 1 if it 708 * isn't there already. Most PnP BIOSen will have 709 * already done this but non-PnP configurations don't. 710 * 711 * And some (!!) report 0x3f2-0x3f5 and completely 712 * leave out the control register! It seems that some 713 * non-antique controller chips have a different 714 * method of programming the transfer speed which 715 * doesn't require the control register, but it's 716 * mighty bogus as the chip still responds to the 717 * address for the control register. 718 */ 719 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 1) == 0) { 720 u_long ctlstart; 721 722 /* Find the control port, usually 0x3f7 */ 723 ctlstart = rman_get_start(fdc->res_ioport) + 724 fdc->port_off + 7; 725 726 bus_set_resource(dev, SYS_RES_IOPORT, 1, ctlstart, 1); 727 } 728 729 /* 730 * Now (finally!) allocate the control port. 731 */ 732 fdc->rid_ctl = 1; 733 fdc->res_ctl = bus_alloc_resource(dev, SYS_RES_IOPORT, 734 &fdc->rid_ctl, 735 0ul, ~0ul, 1, RF_ACTIVE); 736 if (fdc->res_ctl == 0) { 737 device_printf(dev, 738 "cannot reserve control I/O port range (control port)\n"); 739 return ENXIO; 740 } 741 fdc->ctlt = rman_get_bustag(fdc->res_ctl); 742 fdc->ctlh = rman_get_bushandle(fdc->res_ctl); 743 } 744 745 fdc->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ, 746 &fdc->rid_irq, 0ul, ~0ul, 1, 747 RF_ACTIVE); 748 if (fdc->res_irq == 0) { 749 device_printf(dev, "cannot reserve interrupt line\n"); 750 return ENXIO; 751 } 752 753 if ((fdc->flags & FDC_NODMA) == 0) { 754 fdc->res_drq = bus_alloc_resource(dev, SYS_RES_DRQ, 755 &fdc->rid_drq, 0ul, ~0ul, 1, 756 RF_ACTIVE); 757 if (fdc->res_drq == 0) { 758 device_printf(dev, "cannot reserve DMA request line\n"); 759 return ENXIO; 760 } 761 fdc->dmachan = fdc->res_drq->r_start; 762 } 763 764 return 0; 765 } 766 767 static void 768 fdc_release_resources(struct fdc_data *fdc) 769 { 770 device_t dev; 771 772 dev = fdc->fdc_dev; 773 if (fdc->res_irq != 0) { 774 bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 775 fdc->res_irq); 776 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 777 fdc->res_irq); 778 } 779 if (fdc->res_ctl != 0) { 780 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 781 fdc->res_ctl); 782 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 783 fdc->res_ctl); 784 } 785 if (fdc->res_ioport != 0) { 786 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 787 fdc->res_ioport); 788 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 789 fdc->res_ioport); 790 } 791 if (fdc->res_drq != 0) { 792 bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 793 fdc->res_drq); 794 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 795 fdc->res_drq); 796 } 797 } 798 799 /* 800 * Configuration/initialization stuff, per controller. 801 */ 802 803 static struct isa_pnp_id fdc_ids[] = { 804 {0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */ 805 {0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */ 806 {0} 807 }; 808 809 static int 810 fdc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 811 { 812 struct fdc_ivars *ivars = device_get_ivars(child); 813 814 switch (which) { 815 case FDC_IVAR_FDUNIT: 816 *result = ivars->fdunit; 817 break; 818 default: 819 return ENOENT; 820 } 821 return 0; 822 } 823 824 static int 825 fdc_probe(device_t dev) 826 { 827 int error, ic_type; 828 struct fdc_data *fdc; 829 830 fdc = device_get_softc(dev); 831 bzero(fdc, sizeof *fdc); 832 fdc->fdc_dev = dev; 833 fdc->fdctl_wr = fdctl_wr_isa; 834 835 /* Check pnp ids */ 836 error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids); 837 if (error == ENXIO) 838 return ENXIO; 839 if (error == 0) 840 fdc->flags |= FDC_ISPNP; 841 842 /* Attempt to allocate our resources for the duration of the probe */ 843 error = fdc_alloc_resources(fdc); 844 if (error) 845 goto out; 846 847 /* First - lets reset the floppy controller */ 848 fdout_wr(fdc, 0); 849 DELAY(100); 850 fdout_wr(fdc, FDO_FRST); 851 852 /* see if it can handle a command */ 853 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 854 NE7_SPEC_2(2, 0), 0)) { 855 error = ENXIO; 856 goto out; 857 } 858 859 if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) { 860 ic_type = (u_char)ic_type; 861 switch (ic_type) { 862 case 0x80: 863 device_set_desc(dev, "NEC 765 or clone"); 864 fdc->fdct = FDC_NE765; 865 break; 866 case 0x81: /* not mentioned in any hardware doc */ 867 case 0x90: 868 device_set_desc(dev, 869 "enhanced floppy controller (i82077, NE72065 or clone)"); 870 fdc->fdct = FDC_ENHANCED; 871 break; 872 default: 873 device_set_desc(dev, "generic floppy controller"); 874 fdc->fdct = FDC_UNKNOWN; 875 break; 876 } 877 } 878 879 out: 880 fdc_release_resources(fdc); 881 return (error); 882 } 883 884 #if NCARD > 0 885 886 static int 887 fdc_pccard_probe(device_t dev) 888 { 889 int error; 890 struct fdc_data *fdc; 891 892 fdc = device_get_softc(dev); 893 bzero(fdc, sizeof *fdc); 894 fdc->fdc_dev = dev; 895 fdc->fdctl_wr = fdctl_wr_pcmcia; 896 897 fdc->flags |= FDC_ISPCMCIA | FDC_NODMA; 898 899 /* Attempt to allocate our resources for the duration of the probe */ 900 error = fdc_alloc_resources(fdc); 901 if (error) 902 goto out; 903 904 /* First - lets reset the floppy controller */ 905 fdout_wr(fdc, 0); 906 DELAY(100); 907 fdout_wr(fdc, FDO_FRST); 908 909 /* see if it can handle a command */ 910 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 911 NE7_SPEC_2(2, 0), 0)) { 912 error = ENXIO; 913 goto out; 914 } 915 916 device_set_desc(dev, "Y-E Data PCMCIA floppy"); 917 fdc->fdct = FDC_NE765; 918 919 out: 920 fdc_release_resources(fdc); 921 return (error); 922 } 923 924 #endif /* NCARD > 0 */ 925 926 static int 927 fdc_detach(device_t dev) 928 { 929 struct fdc_data *fdc; 930 int error; 931 932 fdc = device_get_softc(dev); 933 934 /* have our children detached first */ 935 if ((error = bus_generic_detach(dev))) 936 return (error); 937 938 /* reset controller, turn motor off */ 939 fdout_wr(fdc, 0); 940 941 if ((fdc->flags & FDC_NODMA) == 0) 942 isa_dma_release(fdc->dmachan); 943 944 if ((fdc->flags & FDC_ATTACHED) == 0) { 945 device_printf(dev, "already unloaded\n"); 946 return (0); 947 } 948 fdc->flags &= ~FDC_ATTACHED; 949 950 BUS_TEARDOWN_INTR(device_get_parent(dev), dev, fdc->res_irq, 951 fdc->fdc_intr); 952 fdc_release_resources(fdc); 953 device_printf(dev, "unload\n"); 954 return (0); 955 } 956 957 /* 958 * Add a child device to the fdc controller. It will then be probed etc. 959 */ 960 static void 961 fdc_add_child(device_t dev, const char *name, int unit) 962 { 963 int disabled, flags; 964 struct fdc_ivars *ivar; 965 device_t child; 966 967 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT | M_ZERO); 968 if (ivar == NULL) 969 return; 970 if (resource_int_value(name, unit, "drive", &ivar->fdunit) != 0) 971 ivar->fdunit = 0; 972 child = device_add_child(dev, name, unit); 973 if (child == NULL) 974 return; 975 device_set_ivars(child, ivar); 976 if (resource_int_value(name, unit, "flags", &flags) == 0) 977 device_set_flags(child, flags); 978 if (resource_int_value(name, unit, "disabled", &disabled) == 0 979 && disabled != 0) 980 device_disable(child); 981 } 982 983 static int 984 fdc_attach(device_t dev) 985 { 986 struct fdc_data *fdc; 987 const char *name, *dname; 988 int i, error, dunit; 989 990 fdc = device_get_softc(dev); 991 error = fdc_alloc_resources(fdc); 992 if (error) { 993 device_printf(dev, "cannot re-acquire resources\n"); 994 return error; 995 } 996 error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq, 997 INTR_TYPE_BIO | INTR_ENTROPY, fdc_intr, fdc, 998 &fdc->fdc_intr); 999 if (error) { 1000 device_printf(dev, "cannot setup interrupt\n"); 1001 return error; 1002 } 1003 fdc->fdcu = device_get_unit(dev); 1004 fdc->flags |= FDC_ATTACHED | FDC_NEEDS_RESET; 1005 1006 if ((fdc->flags & FDC_NODMA) == 0) { 1007 /* 1008 * Acquire the DMA channel forever, the driver will do 1009 * the rest 1010 * XXX should integrate with rman 1011 */ 1012 isa_dma_acquire(fdc->dmachan); 1013 isa_dmainit(fdc->dmachan, MAX_SEC_SIZE); 1014 } 1015 fdc->state = DEVIDLE; 1016 1017 /* reset controller, turn motor off, clear fdout mirror reg */ 1018 fdout_wr(fdc, fdc->fdout = 0); 1019 bioq_init(&fdc->head); 1020 1021 /* 1022 * Probe and attach any children. We should probably detect 1023 * devices from the BIOS unless overridden. 1024 */ 1025 name = device_get_nameunit(dev); 1026 i = 0; 1027 while ((resource_find_match(&i, &dname, &dunit, "at", name)) == 0) 1028 fdc_add_child(dev, dname, dunit); 1029 1030 if ((error = bus_generic_attach(dev)) != 0) 1031 return (error); 1032 1033 return (0); 1034 } 1035 1036 static int 1037 fdc_print_child(device_t me, device_t child) 1038 { 1039 int retval = 0, flags; 1040 1041 retval += bus_print_child_header(me, child); 1042 retval += printf(" on %s drive %d", device_get_nameunit(me), 1043 fdc_get_fdunit(child)); 1044 if ((flags = device_get_flags(me)) != 0) 1045 retval += printf(" flags %#x", flags); 1046 retval += printf("\n"); 1047 1048 return (retval); 1049 } 1050 1051 static device_method_t fdc_methods[] = { 1052 /* Device interface */ 1053 DEVMETHOD(device_probe, fdc_probe), 1054 DEVMETHOD(device_attach, fdc_attach), 1055 DEVMETHOD(device_detach, fdc_detach), 1056 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1057 DEVMETHOD(device_suspend, bus_generic_suspend), 1058 DEVMETHOD(device_resume, bus_generic_resume), 1059 1060 /* Bus interface */ 1061 DEVMETHOD(bus_print_child, fdc_print_child), 1062 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 1063 /* Our children never use any other bus interface methods. */ 1064 1065 { 0, 0 } 1066 }; 1067 1068 static driver_t fdc_driver = { 1069 "fdc", 1070 fdc_methods, 1071 sizeof(struct fdc_data) 1072 }; 1073 1074 DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0); 1075 DRIVER_MODULE(fdc, acpi, fdc_driver, fdc_devclass, 0, 0); 1076 1077 #if NCARD > 0 1078 1079 static device_method_t fdc_pccard_methods[] = { 1080 /* Device interface */ 1081 DEVMETHOD(device_probe, fdc_pccard_probe), 1082 DEVMETHOD(device_attach, fdc_attach), 1083 DEVMETHOD(device_detach, fdc_detach), 1084 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1085 DEVMETHOD(device_suspend, bus_generic_suspend), 1086 DEVMETHOD(device_resume, bus_generic_resume), 1087 1088 /* Bus interface */ 1089 DEVMETHOD(bus_print_child, fdc_print_child), 1090 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 1091 /* Our children never use any other bus interface methods. */ 1092 1093 { 0, 0 } 1094 }; 1095 1096 static driver_t fdc_pccard_driver = { 1097 "fdc", 1098 fdc_pccard_methods, 1099 sizeof(struct fdc_data) 1100 }; 1101 1102 DRIVER_MODULE(fdc, pccard, fdc_pccard_driver, fdc_devclass, 0, 0); 1103 1104 #endif /* NCARD > 0 */ 1105 1106 /* 1107 * Create a clone device upon request by devfs. 1108 */ 1109 static void 1110 fd_clone(void *arg, char *name, int namelen, dev_t *dev) 1111 { 1112 struct fd_data *fd; 1113 int i, u; 1114 char *n; 1115 size_t l; 1116 1117 fd = (struct fd_data *)arg; 1118 if (*dev != NODEV) 1119 return; 1120 if (dev_stdclone(name, &n, "fd", &u) != 2) 1121 return; 1122 l = strlen(n); 1123 if (l == 1 && *n >= 'a' && *n <= 'h') { 1124 /* 1125 * Trailing letters a through h denote 1126 * pseudo-partitions. We don't support true 1127 * (UFS-style) partitions, so we just implement them 1128 * as symlinks if someone asks us nicely. 1129 */ 1130 *dev = make_dev_alias(fd->masterdev, name); 1131 return; 1132 } 1133 if (l >= 2 && l <= 5 && *n == '.') { 1134 /* 1135 * Trailing numbers, preceded by a dot, denote 1136 * subdevices for different densities. Historically, 1137 * they have been named by density (like fd0.1440), 1138 * but we allow arbitrary numbers between 1 and 4 1139 * digits, so fd0.1 through fd0.15 are possible as 1140 * well. 1141 */ 1142 for (i = 1; i < l; i++) 1143 if (n[i] < '0' || n[i] > '9') 1144 return; 1145 for (i = 0; i < NUMDENS - 1; i++) 1146 if (fd->clonedevs[i] == NODEV) { 1147 *dev = make_dev(&fd_cdevsw, 1148 FDNUMTOUNIT(u) + i + 1, 1149 UID_ROOT, GID_OPERATOR, 0640, 1150 name); 1151 fd->clonedevs[i] = *dev; 1152 return; 1153 } 1154 } 1155 } 1156 1157 /* 1158 * Configuration/initialization, per drive. 1159 */ 1160 static int 1161 fd_probe(device_t dev) 1162 { 1163 int i; 1164 u_int st0, st3; 1165 struct fd_data *fd; 1166 struct fdc_data *fdc; 1167 fdsu_t fdsu; 1168 int flags; 1169 1170 fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */ 1171 fd = device_get_softc(dev); 1172 fdc = device_get_softc(device_get_parent(dev)); 1173 flags = device_get_flags(dev); 1174 1175 bzero(fd, sizeof *fd); 1176 fd->dev = dev; 1177 fd->fdc = fdc; 1178 fd->fdsu = fdsu; 1179 fd->fdu = device_get_unit(dev); 1180 fd->flags = FD_UA; /* make sure fdautoselect() will be called */ 1181 1182 fd->type = FD_DTYPE(flags); 1183 #if _MACHINE_ARCH == i386 1184 if (fd->type == FDT_NONE && (fd->fdu == 0 || fd->fdu == 1)) { 1185 /* Look up what the BIOS thinks we have. */ 1186 if (fd->fdu == 0) { 1187 if ((fdc->flags & FDC_ISPCMCIA)) 1188 /* 1189 * Somewhat special. No need to force the 1190 * user to set device flags, since the Y-E 1191 * Data PCMCIA floppy is always a 1.44 MB 1192 * device. 1193 */ 1194 fd->type = FDT_144M; 1195 else 1196 fd->type = (rtcin(RTC_FDISKETTE) & 0xf0) >> 4; 1197 } else { 1198 fd->type = rtcin(RTC_FDISKETTE) & 0x0f; 1199 } 1200 if (fd->type == FDT_288M_1) 1201 fd->type = FDT_288M; 1202 } 1203 #endif /* _MACHINE_ARCH == i386 */ 1204 /* is there a unit? */ 1205 if (fd->type == FDT_NONE) 1206 return (ENXIO); 1207 1208 /* select it */ 1209 set_motor(fdc, fdsu, TURNON); 1210 fdc_reset(fdc); /* XXX reset, then unreset, etc. */ 1211 DELAY(1000000); /* 1 sec */ 1212 1213 /* XXX This doesn't work before the first set_motor() */ 1214 if ((fdc->flags & FDC_HAS_FIFO) == 0 && 1215 fdc->fdct == FDC_ENHANCED && 1216 (device_get_flags(fdc->fdc_dev) & FDC_NO_FIFO) == 0 && 1217 enable_fifo(fdc) == 0) { 1218 device_printf(device_get_parent(dev), 1219 "FIFO enabled, %d bytes threshold\n", fifo_threshold); 1220 } 1221 1222 if ((flags & FD_NO_PROBE) == 0) { 1223 /* If we're at track 0 first seek inwards. */ 1224 if ((fd_sense_drive_status(fdc, &st3) == 0) && 1225 (st3 & NE7_ST3_T0)) { 1226 /* Seek some steps... */ 1227 if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 1228 /* ...wait a moment... */ 1229 DELAY(300000); 1230 /* make ctrlr happy: */ 1231 fd_sense_int(fdc, 0, 0); 1232 } 1233 } 1234 1235 for (i = 0; i < 2; i++) { 1236 /* 1237 * we must recalibrate twice, just in case the 1238 * heads have been beyond cylinder 76, since 1239 * most FDCs still barf when attempting to 1240 * recalibrate more than 77 steps 1241 */ 1242 /* go back to 0: */ 1243 if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1244 /* a second being enough for full stroke seek*/ 1245 DELAY(i == 0 ? 1000000 : 300000); 1246 1247 /* anything responding? */ 1248 if (fd_sense_int(fdc, &st0, 0) == 0 && 1249 (st0 & NE7_ST0_EC) == 0) 1250 break; /* already probed succesfully */ 1251 } 1252 } 1253 } 1254 1255 set_motor(fdc, fdsu, TURNOFF); 1256 1257 if ((flags & FD_NO_PROBE) == 0 && 1258 (st0 & NE7_ST0_EC) != 0) /* no track 0 -> no drive present */ 1259 return (ENXIO); 1260 1261 switch (fd->type) { 1262 case FDT_12M: 1263 device_set_desc(dev, "1200-KB 5.25\" drive"); 1264 fd->type = FDT_12M; 1265 break; 1266 case FDT_144M: 1267 device_set_desc(dev, "1440-KB 3.5\" drive"); 1268 fd->type = FDT_144M; 1269 break; 1270 case FDT_288M: 1271 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 1272 fd->type = FDT_288M; 1273 break; 1274 case FDT_360K: 1275 device_set_desc(dev, "360-KB 5.25\" drive"); 1276 fd->type = FDT_360K; 1277 break; 1278 case FDT_720K: 1279 device_set_desc(dev, "720-KB 3.5\" drive"); 1280 fd->type = FDT_720K; 1281 break; 1282 default: 1283 return (ENXIO); 1284 } 1285 fd->track = FD_NO_TRACK; 1286 fd->fdc = fdc; 1287 fd->fdsu = fdsu; 1288 fd->options = 0; 1289 callout_handle_init(&fd->toffhandle); 1290 callout_handle_init(&fd->tohandle); 1291 1292 /* initialize densities for subdevices */ 1293 for (i = 0; i < NUMDENS; i++) 1294 memcpy(fd->fts + i, fd_native_types + fd->type, 1295 sizeof(struct fd_type)); 1296 return (0); 1297 } 1298 1299 static int 1300 fd_attach(device_t dev) 1301 { 1302 struct fd_data *fd; 1303 static int cdevsw_add_done; 1304 int i; 1305 1306 if (!cdevsw_add_done) { 1307 cdevsw_add(&fd_cdevsw); /* XXX */ 1308 cdevsw_add_done = 1; 1309 } 1310 fd = device_get_softc(dev); 1311 fd->clonetag = EVENTHANDLER_REGISTER(dev_clone, fd_clone, fd, 1000); 1312 fd->masterdev = make_dev(&fd_cdevsw, fd->fdu << 6, 1313 UID_ROOT, GID_OPERATOR, 0640, "fd%d", fd->fdu); 1314 for (i = 0; i < NUMDENS - 1; i++) 1315 fd->clonedevs[i] = NODEV; 1316 devstat_add_entry(&fd->device_stats, device_get_name(dev), 1317 device_get_unit(dev), 0, DEVSTAT_NO_ORDERED_TAGS, 1318 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER, 1319 DEVSTAT_PRIORITY_FD); 1320 return (0); 1321 } 1322 1323 static int 1324 fd_detach(device_t dev) 1325 { 1326 struct fd_data *fd; 1327 int i; 1328 1329 fd = device_get_softc(dev); 1330 untimeout(fd_turnoff, fd, fd->toffhandle); 1331 devstat_remove_entry(&fd->device_stats); 1332 destroy_dev(fd->masterdev); 1333 for (i = 0; i < NUMDENS - 1; i++) 1334 if (fd->clonedevs[i] != NODEV) 1335 destroy_dev(fd->clonedevs[i]); 1336 cdevsw_remove(&fd_cdevsw); 1337 EVENTHANDLER_DEREGISTER(dev_clone, fd->clonetag); 1338 1339 return (0); 1340 } 1341 1342 static device_method_t fd_methods[] = { 1343 /* Device interface */ 1344 DEVMETHOD(device_probe, fd_probe), 1345 DEVMETHOD(device_attach, fd_attach), 1346 DEVMETHOD(device_detach, fd_detach), 1347 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1348 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 1349 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 1350 1351 { 0, 0 } 1352 }; 1353 1354 static driver_t fd_driver = { 1355 "fd", 1356 fd_methods, 1357 sizeof(struct fd_data) 1358 }; 1359 1360 DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, 0, 0); 1361 1362 /* 1363 * More auxiliary functions. 1364 */ 1365 /* 1366 * Motor control stuff. 1367 * Remember to not deselect the drive we're working on. 1368 */ 1369 static void 1370 set_motor(struct fdc_data *fdc, int fdsu, int turnon) 1371 { 1372 int fdout; 1373 1374 fdout = fdc->fdout; 1375 if (turnon) { 1376 fdout &= ~FDO_FDSEL; 1377 fdout |= (FDO_MOEN0 << fdsu) | FDO_FDMAEN | FDO_FRST | fdsu; 1378 } else 1379 fdout &= ~(FDO_MOEN0 << fdsu); 1380 fdc->fdout = fdout; 1381 fdout_wr(fdc, fdout); 1382 TRACE1("[0x%x->FDOUT]", fdout); 1383 } 1384 1385 static void 1386 fd_turnoff(void *xfd) 1387 { 1388 int s; 1389 fd_p fd = xfd; 1390 1391 TRACE1("[fd%d: turnoff]", fd->fdu); 1392 1393 s = splbio(); 1394 /* 1395 * Don't turn off the motor yet if the drive is active. 1396 * 1397 * If we got here, this could only mean we missed an interrupt. 1398 * This can e. g. happen on the Y-E Date PCMCIA floppy controller 1399 * after a controller reset. Just schedule a pseudo-interrupt 1400 * so the state machine gets re-entered. 1401 */ 1402 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) { 1403 fdc_intr(fd->fdc); 1404 splx(s); 1405 return; 1406 } 1407 1408 fd->flags &= ~FD_MOTOR; 1409 set_motor(fd->fdc, fd->fdsu, TURNOFF); 1410 splx(s); 1411 } 1412 1413 static void 1414 fd_motor_on(void *xfd) 1415 { 1416 int s; 1417 fd_p fd = xfd; 1418 1419 s = splbio(); 1420 fd->flags &= ~FD_MOTOR_WAIT; 1421 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT)) 1422 { 1423 fdc_intr(fd->fdc); 1424 } 1425 splx(s); 1426 } 1427 1428 static void 1429 fd_turnon(fd_p fd) 1430 { 1431 if(!(fd->flags & FD_MOTOR)) 1432 { 1433 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT); 1434 set_motor(fd->fdc, fd->fdsu, TURNON); 1435 timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */ 1436 } 1437 } 1438 1439 static void 1440 fdc_reset(fdc_p fdc) 1441 { 1442 /* Try a reset, keep motor on */ 1443 fdout_wr(fdc, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1444 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1445 DELAY(100); 1446 /* enable FDC, but defer interrupts a moment */ 1447 fdout_wr(fdc, fdc->fdout & ~FDO_FDMAEN); 1448 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN); 1449 DELAY(100); 1450 fdout_wr(fdc, fdc->fdout); 1451 TRACE1("[0x%x->FDOUT]", fdc->fdout); 1452 1453 /* XXX after a reset, silently believe the FDC will accept commands */ 1454 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1455 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1456 0); 1457 if (fdc->flags & FDC_HAS_FIFO) 1458 (void) enable_fifo(fdc); 1459 } 1460 1461 /* 1462 * FDC IO functions, take care of the main status register, timeout 1463 * in case the desired status bits are never set. 1464 */ 1465 static int 1466 fd_in(struct fdc_data *fdc, int *ptr) 1467 { 1468 int i, j = 100000; 1469 while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) 1470 != (NE7_DIO|NE7_RQM) && j-- > 0) 1471 if (i == NE7_RQM) 1472 return fdc_err(fdc, "ready for output in input\n"); 1473 if (j <= 0) 1474 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1475 #ifdef FDC_DEBUG 1476 i = fddata_rd(fdc); 1477 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1478 *ptr = i; 1479 return 0; 1480 #else /* !FDC_DEBUG */ 1481 i = fddata_rd(fdc); 1482 if (ptr) 1483 *ptr = i; 1484 return 0; 1485 #endif /* FDC_DEBUG */ 1486 } 1487 1488 int 1489 out_fdc(struct fdc_data *fdc, int x) 1490 { 1491 int i; 1492 1493 /* Check that the direction bit is set */ 1494 i = 100000; 1495 while ((fdsts_rd(fdc) & NE7_DIO) && i-- > 0); 1496 if (i <= 0) return fdc_err(fdc, "direction bit not set\n"); 1497 1498 /* Check that the floppy controller is ready for a command */ 1499 i = 100000; 1500 while ((fdsts_rd(fdc) & NE7_RQM) == 0 && i-- > 0); 1501 if (i <= 0) 1502 return fdc_err(fdc, bootverbose? "output ready timeout\n": 0); 1503 1504 /* Send the command and return */ 1505 fddata_wr(fdc, x); 1506 TRACE1("[0x%x->FDDATA]", x); 1507 return (0); 1508 } 1509 1510 /* 1511 * Block device driver interface functions (interspersed with even more 1512 * auxiliary functions). 1513 */ 1514 int 1515 Fdopen(dev_t dev, int flags, int mode, struct thread *td) 1516 { 1517 fdu_t fdu = FDUNIT(minor(dev)); 1518 int type = FDTYPE(minor(dev)); 1519 fd_p fd; 1520 fdc_p fdc; 1521 int rv, unitattn, dflags; 1522 1523 if ((fd = devclass_get_softc(fd_devclass, fdu)) == 0) 1524 return (ENXIO); 1525 fdc = fd->fdc; 1526 if ((fdc == NULL) || (fd->type == FDT_NONE)) 1527 return (ENXIO); 1528 if (type > NUMDENS) 1529 return (ENXIO); 1530 dflags = device_get_flags(fd->dev); 1531 /* 1532 * This is a bit bogus. It's still possible that e. g. a 1533 * descriptor gets inherited to a child, but then it's at 1534 * least for the same subdevice. By checking FD_OPEN here, we 1535 * can ensure that a device isn't attempted to be opened with 1536 * different densities at the same time where the second open 1537 * could clobber the settings from the first one. 1538 */ 1539 if (fd->flags & FD_OPEN) 1540 return (EBUSY); 1541 1542 if (type == 0) { 1543 if (flags & FNONBLOCK) { 1544 /* 1545 * Unfortunately, physio(9) discards its ioflag 1546 * argument, thus preventing us from seeing the 1547 * IO_NDELAY bit. So we need to keep track 1548 * ourselves. 1549 */ 1550 fd->flags |= FD_NONBLOCK; 1551 fd->ft = 0; 1552 } else { 1553 /* 1554 * Figure out a unit attention condition. 1555 * 1556 * If UA has been forced, proceed. 1557 * 1558 * If motor is off, turn it on for a moment 1559 * and select our drive, in order to read the 1560 * UA hardware signal. 1561 * 1562 * If motor is on, and our drive is currently 1563 * selected, just read the hardware bit. 1564 * 1565 * If motor is on, but active for another 1566 * drive on that controller, we are lost. We 1567 * cannot risk to deselect the other drive, so 1568 * we just assume a forced UA condition to be 1569 * on the safe side. 1570 */ 1571 unitattn = 0; 1572 if ((dflags & FD_NO_CHLINE) != 0 || 1573 (fd->flags & FD_UA) != 0) { 1574 unitattn = 1; 1575 fd->flags &= ~FD_UA; 1576 } else if (fdc->fdout & (FDO_MOEN0 | FDO_MOEN1 | 1577 FDO_MOEN2 | FDO_MOEN3)) { 1578 if ((fdc->fdout & FDO_FDSEL) == fd->fdsu) 1579 unitattn = fdin_rd(fdc) & FDI_DCHG; 1580 else 1581 unitattn = 1; 1582 } else { 1583 set_motor(fdc, fd->fdsu, TURNON); 1584 unitattn = fdin_rd(fdc) & FDI_DCHG; 1585 set_motor(fdc, fd->fdsu, TURNOFF); 1586 } 1587 if (unitattn && (rv = fdautoselect(dev)) != 0) 1588 return (rv); 1589 } 1590 } else { 1591 fd->ft = fd->fts + type; 1592 } 1593 fd->flags |= FD_OPEN; 1594 /* 1595 * Clearing the DMA overrun counter at open time is a bit messy. 1596 * Since we're only managing one counter per controller, opening 1597 * the second drive could mess it up. Anyway, if the DMA overrun 1598 * condition is really persistent, it will eventually time out 1599 * still. OTOH, clearing it here will ensure we'll at least start 1600 * trying again after a previous (maybe even long ago) failure. 1601 * Also, this is merely a stop-gap measure only that should not 1602 * happen during normal operation, so we can tolerate it to be a 1603 * bit sloppy about this. 1604 */ 1605 fdc->dma_overruns = 0; 1606 1607 return 0; 1608 } 1609 1610 int 1611 fdclose(dev_t dev, int flags, int mode, struct thread *td) 1612 { 1613 fdu_t fdu = FDUNIT(minor(dev)); 1614 struct fd_data *fd; 1615 1616 fd = devclass_get_softc(fd_devclass, fdu); 1617 fd->flags &= ~(FD_OPEN | FD_NONBLOCK); 1618 fd->options &= ~(FDOPT_NORETRY | FDOPT_NOERRLOG | FDOPT_NOERROR); 1619 1620 return (0); 1621 } 1622 1623 void 1624 fdstrategy(struct bio *bp) 1625 { 1626 long blknum, nblocks; 1627 int s; 1628 fdu_t fdu; 1629 fdc_p fdc; 1630 fd_p fd; 1631 size_t fdblk; 1632 1633 fdu = FDUNIT(minor(bp->bio_dev)); 1634 fd = devclass_get_softc(fd_devclass, fdu); 1635 if (fd == 0) 1636 panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)", 1637 (u_long)major(bp->bio_dev), (u_long)minor(bp->bio_dev)); 1638 fdc = fd->fdc; 1639 if (fd->type == FDT_NONE || fd->ft == 0) { 1640 bp->bio_error = ENXIO; 1641 bp->bio_flags |= BIO_ERROR; 1642 goto bad; 1643 } 1644 fdblk = 128 << (fd->ft->secsize); 1645 if (bp->bio_cmd != BIO_FORMAT && bp->bio_cmd != BIO_RDSECTID) { 1646 if (fd->flags & FD_NONBLOCK) { 1647 bp->bio_error = EAGAIN; 1648 bp->bio_flags |= BIO_ERROR; 1649 goto bad; 1650 } 1651 if (bp->bio_blkno < 0) { 1652 printf( 1653 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n", 1654 fdu, (u_long)bp->bio_blkno, bp->bio_bcount); 1655 bp->bio_error = EINVAL; 1656 bp->bio_flags |= BIO_ERROR; 1657 goto bad; 1658 } 1659 if ((bp->bio_bcount % fdblk) != 0) { 1660 bp->bio_error = EINVAL; 1661 bp->bio_flags |= BIO_ERROR; 1662 goto bad; 1663 } 1664 } 1665 1666 /* 1667 * Set up block calculations. 1668 */ 1669 if (bp->bio_blkno > 20000000) { 1670 /* 1671 * Reject unreasonably high block number, prevent the 1672 * multiplication below from overflowing. 1673 */ 1674 bp->bio_error = EINVAL; 1675 bp->bio_flags |= BIO_ERROR; 1676 goto bad; 1677 } 1678 blknum = bp->bio_blkno * DEV_BSIZE / fdblk; 1679 nblocks = fd->ft->size; 1680 if (blknum + bp->bio_bcount / fdblk > nblocks) { 1681 if (blknum >= nblocks) { 1682 if (bp->bio_cmd == BIO_READ) 1683 bp->bio_resid = bp->bio_bcount; 1684 else { 1685 bp->bio_error = ENOSPC; 1686 bp->bio_flags |= BIO_ERROR; 1687 } 1688 goto bad; /* not always bad, but EOF */ 1689 } 1690 bp->bio_bcount = (nblocks - blknum) * fdblk; 1691 } 1692 bp->bio_pblkno = bp->bio_blkno; 1693 s = splbio(); 1694 bioqdisksort(&fdc->head, bp); 1695 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */ 1696 devstat_start_transaction(&fd->device_stats); 1697 device_busy(fd->dev); 1698 fdstart(fdc); 1699 splx(s); 1700 return; 1701 1702 bad: 1703 biodone(bp); 1704 } 1705 1706 /* 1707 * fdstart 1708 * 1709 * We have just queued something. If the controller is not busy 1710 * then simulate the case where it has just finished a command 1711 * So that it (the interrupt routine) looks on the queue for more 1712 * work to do and picks up what we just added. 1713 * 1714 * If the controller is already busy, we need do nothing, as it 1715 * will pick up our work when the present work completes. 1716 */ 1717 static void 1718 fdstart(struct fdc_data *fdc) 1719 { 1720 int s; 1721 1722 s = splbio(); 1723 if(fdc->state == DEVIDLE) 1724 { 1725 fdc_intr(fdc); 1726 } 1727 splx(s); 1728 } 1729 1730 static void 1731 fd_iotimeout(void *xfdc) 1732 { 1733 fdc_p fdc; 1734 int s; 1735 1736 fdc = xfdc; 1737 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); 1738 1739 /* 1740 * Due to IBM's brain-dead design, the FDC has a faked ready 1741 * signal, hardwired to ready == true. Thus, any command 1742 * issued if there's no diskette in the drive will _never_ 1743 * complete, and must be aborted by resetting the FDC. 1744 * Many thanks, Big Blue! 1745 * The FDC must not be reset directly, since that would 1746 * interfere with the state machine. Instead, pretend that 1747 * the command completed but was invalid. The state machine 1748 * will reset the FDC and retry once. 1749 */ 1750 s = splbio(); 1751 fdc->status[0] = NE7_ST0_IC_IV; 1752 fdc->flags &= ~FDC_STAT_VALID; 1753 fdc->state = IOTIMEDOUT; 1754 fdc_intr(fdc); 1755 splx(s); 1756 } 1757 1758 /* Just ensure it has the right spl. */ 1759 static void 1760 fd_pseudointr(void *xfdc) 1761 { 1762 int s; 1763 1764 s = splbio(); 1765 fdc_intr(xfdc); 1766 splx(s); 1767 } 1768 1769 /* 1770 * fdc_intr 1771 * 1772 * Keep calling the state machine until it returns a 0. 1773 * Always called at splbio. 1774 */ 1775 static void 1776 fdc_intr(void *xfdc) 1777 { 1778 fdc_p fdc = xfdc; 1779 while(fdstate(fdc)) 1780 ; 1781 } 1782 1783 /* 1784 * Magic pseudo-DMA initialization for YE FDC. Sets count and 1785 * direction. 1786 */ 1787 #define SET_BCDR(fdc,wr,cnt,port) \ 1788 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port, \ 1789 ((cnt)-1) & 0xff); \ 1790 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port + 1, \ 1791 ((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))); 1792 1793 /* 1794 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy. 1795 */ 1796 static int 1797 fdcpio(fdc_p fdc, long flags, caddr_t addr, u_int count) 1798 { 1799 u_char *cptr = (u_char *)addr; 1800 1801 if (flags == BIO_READ) { 1802 if (fdc->state != PIOREAD) { 1803 fdc->state = PIOREAD; 1804 return(0); 1805 } 1806 SET_BCDR(fdc, 0, count, 0); 1807 bus_space_read_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1808 FDC_YE_DATAPORT, cptr, count); 1809 } else { 1810 bus_space_write_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1811 FDC_YE_DATAPORT, cptr, count); 1812 SET_BCDR(fdc, 0, count, 0); 1813 } 1814 return(1); 1815 } 1816 1817 /* 1818 * Try figuring out the density of the media present in our device. 1819 */ 1820 static int 1821 fdautoselect(dev_t dev) 1822 { 1823 fdu_t fdu; 1824 fd_p fd; 1825 struct fd_type *fdtp; 1826 struct fdc_readid id; 1827 int i, n, oopts, rv; 1828 1829 fdu = FDUNIT(minor(dev)); 1830 fd = devclass_get_softc(fd_devclass, fdu); 1831 1832 switch (fd->type) { 1833 default: 1834 return (ENXIO); 1835 1836 case FDT_360K: 1837 case FDT_720K: 1838 /* no autoselection on those drives */ 1839 fd->ft = fd_native_types + fd->type; 1840 return (0); 1841 1842 case FDT_12M: 1843 fdtp = fd_searchlist_12m; 1844 n = sizeof fd_searchlist_12m / sizeof(struct fd_type); 1845 break; 1846 1847 case FDT_144M: 1848 fdtp = fd_searchlist_144m; 1849 n = sizeof fd_searchlist_144m / sizeof(struct fd_type); 1850 break; 1851 1852 case FDT_288M: 1853 fdtp = fd_searchlist_288m; 1854 n = sizeof fd_searchlist_288m / sizeof(struct fd_type); 1855 break; 1856 } 1857 1858 /* 1859 * Try reading sector ID fields, first at cylinder 0, head 0, 1860 * then at cylinder 2, head N. We don't probe cylinder 1, 1861 * since for 5.25in DD media in a HD drive, there are no data 1862 * to read (2 step pulses per media cylinder required). For 1863 * two-sided media, the second probe always goes to head 1, so 1864 * we can tell them apart from single-sided media. As a 1865 * side-effect this means that single-sided media should be 1866 * mentioned in the search list after two-sided media of an 1867 * otherwise identical density. Media with a different number 1868 * of sectors per track but otherwise identical parameters 1869 * cannot be distinguished at all. 1870 * 1871 * If we successfully read an ID field on both cylinders where 1872 * the recorded values match our expectation, we are done. 1873 * Otherwise, we try the next density entry from the table. 1874 * 1875 * Stepping to cylinder 2 has the side-effect of clearing the 1876 * unit attention bit. 1877 */ 1878 oopts = fd->options; 1879 fd->options |= FDOPT_NOERRLOG | FDOPT_NORETRY; 1880 for (i = 0; i < n; i++, fdtp++) { 1881 fd->ft = fdtp; 1882 1883 id.cyl = id.head = 0; 1884 rv = fdmisccmd(dev, BIO_RDSECTID, &id); 1885 if (rv != 0) 1886 continue; 1887 if (id.cyl != 0 || id.head != 0 || 1888 id.secshift != fdtp->secsize) 1889 continue; 1890 id.cyl = 2; 1891 id.head = fd->ft->heads - 1; 1892 rv = fdmisccmd(dev, BIO_RDSECTID, &id); 1893 if (id.cyl != 2 || id.head != fdtp->heads - 1 || 1894 id.secshift != fdtp->secsize) 1895 continue; 1896 if (rv == 0) 1897 break; 1898 } 1899 1900 fd->options = oopts; 1901 if (i == n) { 1902 device_printf(fd->dev, "autoselection failed\n"); 1903 fd->ft = 0; 1904 return (EIO); 1905 } else { 1906 device_printf(fd->dev, "autoselected %d KB medium\n", 1907 fd->ft->size / 2); 1908 return (0); 1909 } 1910 } 1911 1912 1913 /* 1914 * The controller state machine. 1915 * 1916 * If it returns a non zero value, it should be called again immediately. 1917 */ 1918 static int 1919 fdstate(fdc_p fdc) 1920 { 1921 struct fdc_readid *idp; 1922 int read, format, rdsectid, cylinder, head, i, sec = 0, sectrac; 1923 int st0, cyl, st3, idf, ne7cmd, mfm, steptrac; 1924 unsigned long blknum; 1925 fdu_t fdu = fdc->fdu; 1926 fd_p fd; 1927 register struct bio *bp; 1928 struct fd_formb *finfo = NULL; 1929 size_t fdblk; 1930 1931 bp = fdc->bp; 1932 if (bp == NULL) { 1933 bp = bioq_first(&fdc->head); 1934 if (bp != NULL) { 1935 bioq_remove(&fdc->head, bp); 1936 fdc->bp = bp; 1937 } 1938 } 1939 if (bp == NULL) { 1940 /* 1941 * Nothing left for this controller to do, 1942 * force into the IDLE state. 1943 */ 1944 fdc->state = DEVIDLE; 1945 if (fdc->fd) { 1946 device_printf(fdc->fdc_dev, 1947 "unexpected valid fd pointer\n"); 1948 fdc->fd = (fd_p) 0; 1949 fdc->fdu = -1; 1950 } 1951 TRACE1("[fdc%d IDLE]", fdc->fdcu); 1952 return (0); 1953 } 1954 fdu = FDUNIT(minor(bp->bio_dev)); 1955 fd = devclass_get_softc(fd_devclass, fdu); 1956 fdblk = 128 << fd->ft->secsize; 1957 if (fdc->fd && (fd != fdc->fd)) 1958 device_printf(fd->dev, "confused fd pointers\n"); 1959 read = bp->bio_cmd == BIO_READ; 1960 mfm = (fd->ft->flags & FL_MFM)? NE7CMD_MFM: 0; 1961 steptrac = (fd->ft->flags & FL_2STEP)? 2: 1; 1962 if (read) 1963 idf = ISADMA_READ; 1964 else 1965 idf = ISADMA_WRITE; 1966 format = bp->bio_cmd == BIO_FORMAT; 1967 rdsectid = bp->bio_cmd == BIO_RDSECTID; 1968 if (format) 1969 finfo = (struct fd_formb *)bp->bio_data; 1970 TRACE1("fd%d", fdu); 1971 TRACE1("[%s]", fdstates[fdc->state]); 1972 TRACE1("(0x%x)", fd->flags); 1973 untimeout(fd_turnoff, fd, fd->toffhandle); 1974 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 1975 switch (fdc->state) 1976 { 1977 case DEVIDLE: 1978 case FINDWORK: /* we have found new work */ 1979 fdc->retry = 0; 1980 fd->skip = 0; 1981 fdc->fd = fd; 1982 fdc->fdu = fdu; 1983 fdc->fdctl_wr(fdc, fd->ft->trans); 1984 TRACE1("[0x%x->FDCTL]", fd->ft->trans); 1985 /* 1986 * If the next drive has a motor startup pending, then 1987 * it will start up in its own good time. 1988 */ 1989 if(fd->flags & FD_MOTOR_WAIT) { 1990 fdc->state = MOTORWAIT; 1991 return (0); /* will return later */ 1992 } 1993 /* 1994 * Maybe if it's not starting, it SHOULD be starting. 1995 */ 1996 if (!(fd->flags & FD_MOTOR)) 1997 { 1998 fdc->state = MOTORWAIT; 1999 fd_turnon(fd); 2000 return (0); /* will return later */ 2001 } 2002 else /* at least make sure we are selected */ 2003 { 2004 set_motor(fdc, fd->fdsu, TURNON); 2005 } 2006 if (fdc->flags & FDC_NEEDS_RESET) { 2007 fdc->state = RESETCTLR; 2008 fdc->flags &= ~FDC_NEEDS_RESET; 2009 } else 2010 fdc->state = DOSEEK; 2011 return (1); /* will return immediately */ 2012 2013 case DOSEEK: 2014 blknum = bp->bio_pblkno + fd->skip / fdblk; 2015 cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 2016 if (cylinder == fd->track) 2017 { 2018 fdc->state = SEEKCOMPLETE; 2019 return (1); /* will return immediately */ 2020 } 2021 if (fd_cmd(fdc, 3, NE7CMD_SEEK, 2022 fd->fdsu, cylinder * steptrac, 0)) 2023 { 2024 /* 2025 * Seek command not accepted, looks like 2026 * the FDC went off to the Saints... 2027 */ 2028 fdc->retry = 6; /* try a reset */ 2029 return(retrier(fdc)); 2030 } 2031 fd->track = FD_NO_TRACK; 2032 fdc->state = SEEKWAIT; 2033 return(0); /* will return later */ 2034 2035 case SEEKWAIT: 2036 /* allow heads to settle */ 2037 timeout(fd_pseudointr, fdc, hz / 16); 2038 fdc->state = SEEKCOMPLETE; 2039 return(0); /* will return later */ 2040 2041 case SEEKCOMPLETE : /* seek done, start DMA */ 2042 blknum = bp->bio_pblkno + fd->skip / fdblk; 2043 cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 2044 2045 /* Make sure seek really happened. */ 2046 if(fd->track == FD_NO_TRACK) { 2047 int descyl = cylinder * steptrac; 2048 do { 2049 /* 2050 * This might be a "ready changed" interrupt, 2051 * which cannot really happen since the 2052 * RDY pin is hardwired to + 5 volts. This 2053 * generally indicates a "bouncing" intr 2054 * line, so do one of the following: 2055 * 2056 * When running on an enhanced FDC that is 2057 * known to not go stuck after responding 2058 * with INVALID, fetch all interrupt states 2059 * until seeing either an INVALID or a 2060 * real interrupt condition. 2061 * 2062 * When running on a dumb old NE765, give 2063 * up immediately. The controller will 2064 * provide up to four dummy RC interrupt 2065 * conditions right after reset (for the 2066 * corresponding four drives), so this is 2067 * our only chance to get notice that it 2068 * was not the FDC that caused the interrupt. 2069 */ 2070 if (fd_sense_int(fdc, &st0, &cyl) 2071 == FD_NOT_VALID) 2072 return (0); /* will return later */ 2073 if(fdc->fdct == FDC_NE765 2074 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 2075 return (0); /* hope for a real intr */ 2076 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 2077 2078 if (0 == descyl) { 2079 int failed = 0; 2080 /* 2081 * seek to cyl 0 requested; make sure we are 2082 * really there 2083 */ 2084 if (fd_sense_drive_status(fdc, &st3)) 2085 failed = 1; 2086 if ((st3 & NE7_ST3_T0) == 0) { 2087 printf( 2088 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", 2089 fdu, st3, NE7_ST3BITS); 2090 failed = 1; 2091 } 2092 2093 if (failed) { 2094 if(fdc->retry < 3) 2095 fdc->retry = 3; 2096 return (retrier(fdc)); 2097 } 2098 } 2099 2100 if (cyl != descyl) { 2101 printf( 2102 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", 2103 fdu, descyl, cyl, st0); 2104 if (fdc->retry < 3) 2105 fdc->retry = 3; 2106 return (retrier(fdc)); 2107 } 2108 } 2109 2110 fd->track = cylinder; 2111 if (format) 2112 fd->skip = (char *)&(finfo->fd_formb_cylno(0)) 2113 - (char *)finfo; 2114 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 2115 isa_dmastart(idf, bp->bio_data+fd->skip, 2116 format ? bp->bio_bcount : fdblk, fdc->dmachan); 2117 blknum = bp->bio_pblkno + fd->skip / fdblk; 2118 sectrac = fd->ft->sectrac; 2119 sec = blknum % (sectrac * fd->ft->heads); 2120 head = sec / sectrac; 2121 sec = sec % sectrac + 1; 2122 if (head != 0 && fd->ft->offset_side2 != 0) 2123 sec += fd->ft->offset_side2; 2124 fd->hddrv = ((head&1)<<2)+fdu; 2125 2126 if(format || !(read || rdsectid)) 2127 { 2128 /* make sure the drive is writable */ 2129 if(fd_sense_drive_status(fdc, &st3) != 0) 2130 { 2131 /* stuck controller? */ 2132 if (!(fdc->flags & FDC_NODMA)) 2133 isa_dmadone(idf, 2134 bp->bio_data + fd->skip, 2135 format ? bp->bio_bcount : fdblk, 2136 fdc->dmachan); 2137 fdc->retry = 6; /* reset the beast */ 2138 return (retrier(fdc)); 2139 } 2140 if(st3 & NE7_ST3_WP) 2141 { 2142 /* 2143 * XXX YES! this is ugly. 2144 * in order to force the current operation 2145 * to fail, we will have to fake an FDC 2146 * error - all error handling is done 2147 * by the retrier() 2148 */ 2149 fdc->status[0] = NE7_ST0_IC_AT; 2150 fdc->status[1] = NE7_ST1_NW; 2151 fdc->status[2] = 0; 2152 fdc->status[3] = fd->track; 2153 fdc->status[4] = head; 2154 fdc->status[5] = sec; 2155 fdc->retry = 8; /* break out immediately */ 2156 fdc->state = IOTIMEDOUT; /* not really... */ 2157 return (1); /* will return immediately */ 2158 } 2159 } 2160 2161 if (format) { 2162 ne7cmd = NE7CMD_FORMAT | mfm; 2163 if (fdc->flags & FDC_NODMA) { 2164 /* 2165 * This seems to be necessary for 2166 * whatever obscure reason; if we omit 2167 * it, we end up filling the sector ID 2168 * fields of the newly formatted track 2169 * entirely with garbage, causing 2170 * `wrong cylinder' errors all over 2171 * the place when trying to read them 2172 * back. 2173 * 2174 * Umpf. 2175 */ 2176 SET_BCDR(fdc, 1, bp->bio_bcount, 0); 2177 2178 (void)fdcpio(fdc,bp->bio_cmd, 2179 bp->bio_data+fd->skip, 2180 bp->bio_bcount); 2181 2182 } 2183 /* formatting */ 2184 if(fd_cmd(fdc, 6, ne7cmd, head << 2 | fdu, 2185 finfo->fd_formb_secshift, 2186 finfo->fd_formb_nsecs, 2187 finfo->fd_formb_gaplen, 2188 finfo->fd_formb_fillbyte, 0)) { 2189 /* controller fell over */ 2190 if (!(fdc->flags & FDC_NODMA)) 2191 isa_dmadone(idf, 2192 bp->bio_data + fd->skip, 2193 format ? bp->bio_bcount : fdblk, 2194 fdc->dmachan); 2195 fdc->retry = 6; 2196 return (retrier(fdc)); 2197 } 2198 } else if (rdsectid) { 2199 ne7cmd = NE7CMD_READID | mfm; 2200 if (fd_cmd(fdc, 2, ne7cmd, head << 2 | fdu, 0)) { 2201 /* controller jamming */ 2202 fdc->retry = 6; 2203 return (retrier(fdc)); 2204 } 2205 } else { 2206 /* read or write operation */ 2207 ne7cmd = (read ? NE7CMD_READ | NE7CMD_SK : NE7CMD_WRITE) | mfm; 2208 if (fdc->flags & FDC_NODMA) { 2209 /* 2210 * This seems to be necessary even when 2211 * reading data. 2212 */ 2213 SET_BCDR(fdc, 1, fdblk, 0); 2214 2215 /* 2216 * Perform the write pseudo-DMA before 2217 * the WRITE command is sent. 2218 */ 2219 if (!read) 2220 (void)fdcpio(fdc,bp->bio_cmd, 2221 bp->bio_data+fd->skip, 2222 fdblk); 2223 } 2224 if (fd_cmd(fdc, 9, 2225 ne7cmd, 2226 head << 2 | fdu, /* head & unit */ 2227 fd->track, /* track */ 2228 head, 2229 sec, /* sector + 1 */ 2230 fd->ft->secsize, /* sector size */ 2231 sectrac, /* sectors/track */ 2232 fd->ft->gap, /* gap size */ 2233 fd->ft->datalen, /* data length */ 2234 0)) { 2235 /* the beast is sleeping again */ 2236 if (!(fdc->flags & FDC_NODMA)) 2237 isa_dmadone(idf, 2238 bp->bio_data + fd->skip, 2239 format ? bp->bio_bcount : fdblk, 2240 fdc->dmachan); 2241 fdc->retry = 6; 2242 return (retrier(fdc)); 2243 } 2244 } 2245 if (!rdsectid && (fdc->flags & FDC_NODMA)) 2246 /* 2247 * If this is a read, then simply await interrupt 2248 * before performing PIO. 2249 */ 2250 if (read && !fdcpio(fdc,bp->bio_cmd, 2251 bp->bio_data+fd->skip,fdblk)) { 2252 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 2253 return(0); /* will return later */ 2254 } 2255 2256 /* 2257 * Write (or format) operation will fall through and 2258 * await completion interrupt. 2259 */ 2260 fdc->state = IOCOMPLETE; 2261 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 2262 return (0); /* will return later */ 2263 2264 case PIOREAD: 2265 /* 2266 * Actually perform the PIO read. The IOCOMPLETE case 2267 * removes the timeout for us. 2268 */ 2269 (void)fdcpio(fdc,bp->bio_cmd,bp->bio_data+fd->skip,fdblk); 2270 fdc->state = IOCOMPLETE; 2271 /* FALLTHROUGH */ 2272 case IOCOMPLETE: /* IO done, post-analyze */ 2273 untimeout(fd_iotimeout, fdc, fd->tohandle); 2274 2275 if (fd_read_status(fdc)) { 2276 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 2277 isa_dmadone(idf, bp->bio_data + fd->skip, 2278 format ? bp->bio_bcount : fdblk, 2279 fdc->dmachan); 2280 if (fdc->retry < 6) 2281 fdc->retry = 6; /* force a reset */ 2282 return (retrier(fdc)); 2283 } 2284 2285 fdc->state = IOTIMEDOUT; 2286 2287 /* FALLTHROUGH */ 2288 case IOTIMEDOUT: 2289 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 2290 isa_dmadone(idf, bp->bio_data + fd->skip, 2291 format ? bp->bio_bcount : fdblk, fdc->dmachan); 2292 if (fdc->status[0] & NE7_ST0_IC) { 2293 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2294 && fdc->status[1] & NE7_ST1_OR) { 2295 /* 2296 * DMA overrun. Someone hogged the bus and 2297 * didn't release it in time for the next 2298 * FDC transfer. 2299 * 2300 * We normally restart this without bumping 2301 * the retry counter. However, in case 2302 * something is seriously messed up (like 2303 * broken hardware), we rather limit the 2304 * number of retries so the IO operation 2305 * doesn't block indefinately. 2306 */ 2307 if (fdc->dma_overruns++ < FDC_DMAOV_MAX) { 2308 fdc->state = SEEKCOMPLETE; 2309 return (1);/* will return immediately */ 2310 } /* else fall through */ 2311 } 2312 if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV 2313 && fdc->retry < 6) 2314 fdc->retry = 6; /* force a reset */ 2315 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2316 && fdc->status[2] & NE7_ST2_WC 2317 && fdc->retry < 3) 2318 fdc->retry = 3; /* force recalibrate */ 2319 return (retrier(fdc)); 2320 } 2321 /* All OK */ 2322 if (rdsectid) { 2323 /* copy out ID field contents */ 2324 idp = (struct fdc_readid *)bp->bio_data; 2325 idp->cyl = fdc->status[3]; 2326 idp->head = fdc->status[4]; 2327 idp->sec = fdc->status[5]; 2328 idp->secshift = fdc->status[6]; 2329 } 2330 /* Operation successful, retry DMA overruns again next time. */ 2331 fdc->dma_overruns = 0; 2332 fd->skip += fdblk; 2333 if (!rdsectid && !format && fd->skip < bp->bio_bcount) { 2334 /* set up next transfer */ 2335 fdc->state = DOSEEK; 2336 } else { 2337 /* ALL DONE */ 2338 fd->skip = 0; 2339 bp->bio_resid = 0; 2340 fdc->bp = NULL; 2341 device_unbusy(fd->dev); 2342 biofinish(bp, &fd->device_stats, 0); 2343 fdc->fd = (fd_p) 0; 2344 fdc->fdu = -1; 2345 fdc->state = FINDWORK; 2346 } 2347 return (1); /* will return immediately */ 2348 2349 case RESETCTLR: 2350 fdc_reset(fdc); 2351 fdc->retry++; 2352 fdc->state = RESETCOMPLETE; 2353 return (0); /* will return later */ 2354 2355 case RESETCOMPLETE: 2356 /* 2357 * Discard all the results from the reset so that they 2358 * can't cause an unexpected interrupt later. 2359 */ 2360 for (i = 0; i < 4; i++) 2361 (void)fd_sense_int(fdc, &st0, &cyl); 2362 fdc->state = STARTRECAL; 2363 /* FALLTHROUGH */ 2364 case STARTRECAL: 2365 if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) { 2366 /* arrgl */ 2367 fdc->retry = 6; 2368 return (retrier(fdc)); 2369 } 2370 fdc->state = RECALWAIT; 2371 return (0); /* will return later */ 2372 2373 case RECALWAIT: 2374 /* allow heads to settle */ 2375 timeout(fd_pseudointr, fdc, hz / 8); 2376 fdc->state = RECALCOMPLETE; 2377 return (0); /* will return later */ 2378 2379 case RECALCOMPLETE: 2380 do { 2381 /* 2382 * See SEEKCOMPLETE for a comment on this: 2383 */ 2384 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 2385 return (0); /* will return later */ 2386 if(fdc->fdct == FDC_NE765 2387 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 2388 return (0); /* hope for a real intr */ 2389 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 2390 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0) 2391 { 2392 if(fdc->retry > 3) 2393 /* 2394 * A recalibrate from beyond cylinder 77 2395 * will "fail" due to the FDC limitations; 2396 * since people used to complain much about 2397 * the failure message, try not logging 2398 * this one if it seems to be the first 2399 * time in a line. 2400 */ 2401 printf("fd%d: recal failed ST0 %b cyl %d\n", 2402 fdu, st0, NE7_ST0BITS, cyl); 2403 if(fdc->retry < 3) fdc->retry = 3; 2404 return (retrier(fdc)); 2405 } 2406 fd->track = 0; 2407 /* Seek (probably) necessary */ 2408 fdc->state = DOSEEK; 2409 return (1); /* will return immediately */ 2410 2411 case MOTORWAIT: 2412 if(fd->flags & FD_MOTOR_WAIT) 2413 { 2414 return (0); /* time's not up yet */ 2415 } 2416 if (fdc->flags & FDC_NEEDS_RESET) { 2417 fdc->state = RESETCTLR; 2418 fdc->flags &= ~FDC_NEEDS_RESET; 2419 } else 2420 fdc->state = DOSEEK; 2421 return (1); /* will return immediately */ 2422 2423 default: 2424 device_printf(fdc->fdc_dev, "unexpected FD int->"); 2425 if (fd_read_status(fdc) == 0) 2426 printf("FDC status :%x %x %x %x %x %x %x ", 2427 fdc->status[0], 2428 fdc->status[1], 2429 fdc->status[2], 2430 fdc->status[3], 2431 fdc->status[4], 2432 fdc->status[5], 2433 fdc->status[6] ); 2434 else 2435 printf("No status available "); 2436 if (fd_sense_int(fdc, &st0, &cyl) != 0) 2437 { 2438 printf("[controller is dead now]\n"); 2439 return (0); /* will return later */ 2440 } 2441 printf("ST0 = %x, PCN = %x\n", st0, cyl); 2442 return (0); /* will return later */ 2443 } 2444 /* noone should ever get here */ 2445 } 2446 2447 static int 2448 retrier(struct fdc_data *fdc) 2449 { 2450 struct bio *bp; 2451 struct fd_data *fd; 2452 int fdu; 2453 2454 bp = fdc->bp; 2455 2456 /* XXX shouldn't this be cached somewhere? */ 2457 fdu = FDUNIT(minor(bp->bio_dev)); 2458 fd = devclass_get_softc(fd_devclass, fdu); 2459 if (fd->options & FDOPT_NORETRY) 2460 goto fail; 2461 2462 switch (fdc->retry) { 2463 case 0: case 1: case 2: 2464 fdc->state = SEEKCOMPLETE; 2465 break; 2466 case 3: case 4: case 5: 2467 fdc->state = STARTRECAL; 2468 break; 2469 case 6: 2470 fdc->state = RESETCTLR; 2471 break; 2472 case 7: 2473 break; 2474 default: 2475 fail: 2476 if ((fd->options & FDOPT_NOERRLOG) == 0) { 2477 diskerr(bp, "hard error", fdc->fd->skip / DEV_BSIZE, 2478 (struct disklabel *)NULL); 2479 if (fdc->flags & FDC_STAT_VALID) { 2480 printf( 2481 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n", 2482 fdc->status[0], NE7_ST0BITS, 2483 fdc->status[1], NE7_ST1BITS, 2484 fdc->status[2], NE7_ST2BITS, 2485 fdc->status[3], fdc->status[4], 2486 fdc->status[5]); 2487 } 2488 else 2489 printf(" (No status)\n"); 2490 } 2491 if ((fd->options & FDOPT_NOERROR) == 0) { 2492 bp->bio_flags |= BIO_ERROR; 2493 bp->bio_error = EIO; 2494 bp->bio_resid = bp->bio_bcount - fdc->fd->skip; 2495 } else 2496 bp->bio_resid = 0; 2497 fdc->bp = NULL; 2498 fdc->fd->skip = 0; 2499 device_unbusy(fd->dev); 2500 biofinish(bp, &fdc->fd->device_stats, 0); 2501 fdc->state = FINDWORK; 2502 fdc->flags |= FDC_NEEDS_RESET; 2503 fdc->fd = (fd_p) 0; 2504 fdc->fdu = -1; 2505 return (1); 2506 } 2507 fdc->retry++; 2508 return (1); 2509 } 2510 2511 static void 2512 fdbiodone(struct bio *bp) 2513 { 2514 wakeup(bp); 2515 } 2516 2517 static int 2518 fdmisccmd(dev_t dev, u_int cmd, void *data) 2519 { 2520 fdu_t fdu; 2521 fd_p fd; 2522 struct bio *bp; 2523 struct fd_formb *finfo; 2524 struct fdc_readid *idfield; 2525 size_t fdblk; 2526 2527 fdu = FDUNIT(minor(dev)); 2528 fd = devclass_get_softc(fd_devclass, fdu); 2529 fdblk = 128 << fd->ft->secsize; 2530 finfo = (struct fd_formb *)data; 2531 idfield = (struct fdc_readid *)data; 2532 2533 bp = malloc(sizeof(struct bio), M_TEMP, M_ZERO); 2534 2535 /* 2536 * Set up a bio request for fdstrategy(). bio_blkno is faked 2537 * so that fdstrategy() will seek to the the requested 2538 * cylinder, and use the desired head. Since we are not 2539 * interested in bioqdisksort() munging with our faked bio 2540 * request, we mark it as being an ordered request. 2541 */ 2542 bp->bio_cmd = cmd; 2543 if (cmd == BIO_FORMAT) { 2544 bp->bio_blkno = 2545 (finfo->cyl * (fd->ft->sectrac * fd->ft->heads) + 2546 finfo->head * fd->ft->sectrac) * 2547 fdblk / DEV_BSIZE; 2548 bp->bio_bcount = sizeof(struct fd_idfield_data) * 2549 finfo->fd_formb_nsecs; 2550 } else if (cmd == BIO_RDSECTID) { 2551 bp->bio_blkno = 2552 (idfield->cyl * (fd->ft->sectrac * fd->ft->heads) + 2553 idfield->head * fd->ft->sectrac) * 2554 fdblk / DEV_BSIZE; 2555 bp->bio_bcount = sizeof(struct fdc_readid); 2556 } else 2557 panic("wrong cmd in fdmisccmd()"); 2558 bp->bio_data = data; 2559 bp->bio_dev = dev; 2560 bp->bio_done = fdbiodone; 2561 bp->bio_flags = BIO_ORDERED; 2562 2563 /* 2564 * Now run the command. The wait loop is a version of bufwait() 2565 * adapted for struct bio instead of struct buf and specialized 2566 * for the current context. 2567 */ 2568 fdstrategy(bp); 2569 while ((bp->bio_flags & BIO_DONE) == 0) 2570 tsleep(bp, PRIBIO, "fdcmd", 0); 2571 2572 free(bp, M_TEMP); 2573 return (bp->bio_flags & BIO_ERROR ? bp->bio_error : 0); 2574 } 2575 2576 static int 2577 fdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 2578 { 2579 fdu_t fdu; 2580 fd_p fd; 2581 struct fd_type *fdt; 2582 struct disklabel *lp; 2583 struct fdc_status *fsp; 2584 struct fdc_readid *rid; 2585 size_t fdblk; 2586 int error, type; 2587 2588 fdu = FDUNIT(minor(dev)); 2589 type = FDTYPE(minor(dev)); 2590 fd = devclass_get_softc(fd_devclass, fdu); 2591 2592 /* 2593 * First, handle everything that could be done with 2594 * FD_NONBLOCK still being set. 2595 */ 2596 switch (cmd) { 2597 case FIONBIO: 2598 if (*(int *)addr != 0) 2599 fd->flags |= FD_NONBLOCK; 2600 else { 2601 if (fd->ft == 0) { 2602 /* 2603 * No drive type has been selected yet, 2604 * cannot turn FNONBLOCK off. 2605 */ 2606 return (EINVAL); 2607 } 2608 fd->flags &= ~FD_NONBLOCK; 2609 } 2610 return (0); 2611 2612 case FIOASYNC: 2613 /* keep the generic fcntl() code happy */ 2614 return (0); 2615 2616 case FD_GTYPE: /* get drive type */ 2617 if (fd->ft == 0) 2618 /* no type known yet, return the native type */ 2619 *(struct fd_type *)addr = fd_native_types[fd->type]; 2620 else 2621 *(struct fd_type *)addr = *fd->ft; 2622 return (0); 2623 2624 case FD_STYPE: /* set drive type */ 2625 if (type == 0) { 2626 /* 2627 * Allow setting drive type temporarily iff 2628 * currently unset. Used for fdformat so any 2629 * user can set it, and then start formatting. 2630 */ 2631 if (fd->ft) 2632 return (EINVAL); /* already set */ 2633 fd->ft = fd->fts; 2634 *fd->ft = *(struct fd_type *)addr; 2635 fd->flags |= FD_UA; 2636 } else { 2637 /* 2638 * Set density definition permanently. Only 2639 * allow for superuser. 2640 */ 2641 if (suser_td(td) != 0) 2642 return (EPERM); 2643 fd->fts[type] = *(struct fd_type *)addr; 2644 } 2645 return (0); 2646 2647 case FD_GOPTS: /* get drive options */ 2648 *(int *)addr = fd->options + (type == 0? FDOPT_AUTOSEL: 0); 2649 return (0); 2650 2651 case FD_SOPTS: /* set drive options */ 2652 fd->options = *(int *)addr & ~FDOPT_AUTOSEL; 2653 return (0); 2654 2655 #ifdef FDC_DEBUG 2656 case FD_DEBUG: 2657 if ((fd_debug != 0) != (*(int *)addr != 0)) { 2658 fd_debug = (*(int *)addr != 0); 2659 printf("fd%d: debugging turned %s\n", 2660 fd->fdu, fd_debug ? "on" : "off"); 2661 } 2662 return (0); 2663 #endif 2664 2665 case FD_CLRERR: 2666 if (suser_td(td) != 0) 2667 return (EPERM); 2668 fd->fdc->fdc_errs = 0; 2669 return (0); 2670 2671 case FD_GSTAT: 2672 fsp = (struct fdc_status *)addr; 2673 if ((fd->fdc->flags & FDC_STAT_VALID) == 0) 2674 return (EINVAL); 2675 memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); 2676 return (0); 2677 2678 case FD_GDTYPE: 2679 *(enum fd_drivetype *)addr = fd->type; 2680 return (0); 2681 } 2682 2683 /* 2684 * Now handle everything else. Make sure we have a valid 2685 * drive type. 2686 */ 2687 if (fd->flags & FD_NONBLOCK) 2688 return (EAGAIN); 2689 if (fd->ft == 0) 2690 return (ENXIO); 2691 fdblk = 128 << fd->ft->secsize; 2692 error = 0; 2693 2694 switch (cmd) { 2695 case DIOCGDINFO: 2696 lp = malloc(sizeof(*lp), M_TEMP, M_ZERO); 2697 lp->d_secsize = fdblk; 2698 fdt = fd->ft; 2699 lp->d_secpercyl = fdt->size / fdt->tracks; 2700 lp->d_type = DTYPE_FLOPPY; 2701 if (readdisklabel(dkmodpart(dev, RAW_PART), lp) != NULL) 2702 error = EINVAL; 2703 else 2704 *(struct disklabel *)addr = *lp; 2705 free(lp, M_TEMP); 2706 break; 2707 2708 case DIOCSDINFO: 2709 if ((flag & FWRITE) == 0) 2710 return (EBADF); 2711 /* 2712 * XXX perhaps should call setdisklabel() to do error checking 2713 * although there is nowhere to "set" the result. Perhaps 2714 * should always just fail. 2715 */ 2716 break; 2717 2718 case DIOCWLABEL: 2719 if ((flag & FWRITE) == 0) 2720 return (EBADF); 2721 break; 2722 2723 case DIOCWDINFO: 2724 if ((flag & FWRITE) == 0) 2725 return (EBADF); 2726 lp = malloc(DEV_BSIZE, M_TEMP, M_ZERO); 2727 error = setdisklabel(lp, (struct disklabel *)addr, (u_long)0); 2728 if (error != 0) 2729 error = writedisklabel(dev, lp); 2730 free(lp, M_TEMP); 2731 break; 2732 2733 case FD_FORM: 2734 if ((flag & FWRITE) == 0) 2735 return (EBADF); /* must be opened for writing */ 2736 if (((struct fd_formb *)addr)->format_version != 2737 FD_FORMAT_VERSION) 2738 return (EINVAL); /* wrong version of formatting prog */ 2739 error = fdmisccmd(dev, BIO_FORMAT, addr); 2740 break; 2741 2742 case FD_GTYPE: /* get drive type */ 2743 *(struct fd_type *)addr = *fd->ft; 2744 break; 2745 2746 case FD_STYPE: /* set drive type */ 2747 /* this is considered harmful; only allow for superuser */ 2748 if (suser_td(td) != 0) 2749 return (EPERM); 2750 *fd->ft = *(struct fd_type *)addr; 2751 break; 2752 2753 case FD_GOPTS: /* get drive options */ 2754 *(int *)addr = fd->options; 2755 break; 2756 2757 case FD_SOPTS: /* set drive options */ 2758 fd->options = *(int *)addr; 2759 break; 2760 2761 #ifdef FDC_DEBUG 2762 case FD_DEBUG: 2763 if ((fd_debug != 0) != (*(int *)addr != 0)) { 2764 fd_debug = (*(int *)addr != 0); 2765 printf("fd%d: debugging turned %s\n", 2766 fd->fdu, fd_debug ? "on" : "off"); 2767 } 2768 break; 2769 #endif 2770 2771 case FD_CLRERR: 2772 if (suser_td(td) != 0) 2773 return (EPERM); 2774 fd->fdc->fdc_errs = 0; 2775 break; 2776 2777 case FD_GSTAT: 2778 fsp = (struct fdc_status *)addr; 2779 if ((fd->fdc->flags & FDC_STAT_VALID) == 0) 2780 return (EINVAL); 2781 memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); 2782 break; 2783 2784 case FD_READID: 2785 rid = (struct fdc_readid *)addr; 2786 if (rid->cyl > MAX_CYLINDER || rid->head > MAX_HEAD) 2787 return (EINVAL); 2788 error = fdmisccmd(dev, BIO_RDSECTID, addr); 2789 break; 2790 2791 default: 2792 error = ENOTTY; 2793 break; 2794 } 2795 return (error); 2796 } 2797