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 */ 54 55 #include <sys/cdefs.h> 56 __FBSDID("$FreeBSD$"); 57 58 #include "opt_fdc.h" 59 #include "card.h" 60 61 #include <sys/param.h> 62 #include <sys/systm.h> 63 #include <sys/bio.h> 64 #include <sys/bus.h> 65 #include <sys/conf.h> 66 #include <sys/devicestat.h> 67 #include <sys/disk.h> 68 #include <sys/fcntl.h> 69 #include <sys/fdcio.h> 70 #include <sys/filio.h> 71 #include <sys/kernel.h> 72 #include <sys/lock.h> 73 #include <sys/malloc.h> 74 #include <sys/module.h> 75 #include <sys/mutex.h> 76 #include <sys/proc.h> 77 #include <sys/syslog.h> 78 79 #include <machine/bus.h> 80 #include <sys/rman.h> 81 82 #include <machine/clock.h> 83 #include <machine/resource.h> 84 #include <machine/stdarg.h> 85 86 #include <isa/isavar.h> 87 #include <isa/isareg.h> 88 #include <isa/fdreg.h> 89 #include <isa/rtc.h> 90 91 enum fdc_type 92 { 93 FDC_NE765, FDC_ENHANCED, FDC_UNKNOWN = -1 94 }; 95 96 enum fdc_states { 97 DEVIDLE, 98 FINDWORK, 99 DOSEEK, 100 SEEKCOMPLETE , 101 IOCOMPLETE, 102 RECALCOMPLETE, 103 STARTRECAL, 104 RESETCTLR, 105 SEEKWAIT, 106 RECALWAIT, 107 MOTORWAIT, 108 IOTIMEDOUT, 109 RESETCOMPLETE, 110 PIOREAD 111 }; 112 113 #ifdef FDC_DEBUG 114 static char const * const fdstates[] = { 115 "DEVIDLE", 116 "FINDWORK", 117 "DOSEEK", 118 "SEEKCOMPLETE", 119 "IOCOMPLETE", 120 "RECALCOMPLETE", 121 "STARTRECAL", 122 "RESETCTLR", 123 "SEEKWAIT", 124 "RECALWAIT", 125 "MOTORWAIT", 126 "IOTIMEDOUT", 127 "RESETCOMPLETE", 128 "PIOREAD" 129 }; 130 #endif 131 132 /* 133 * Per controller structure (softc). 134 */ 135 struct fdc_data 136 { 137 int fdcu; /* our unit number */ 138 int dmachan; 139 int flags; 140 #define FDC_ATTACHED 0x01 141 #define FDC_STAT_VALID 0x08 142 #define FDC_HAS_FIFO 0x10 143 #define FDC_NEEDS_RESET 0x20 144 #define FDC_NODMA 0x40 145 #define FDC_ISPNP 0x80 146 #define FDC_ISPCMCIA 0x100 147 struct fd_data *fd; 148 int fdu; /* the active drive */ 149 enum fdc_states state; 150 int retry; 151 int fdout; /* mirror of the w/o digital output reg */ 152 u_int status[7]; /* copy of the registers */ 153 enum fdc_type fdct; /* chip version of FDC */ 154 int fdc_errs; /* number of logged errors */ 155 int dma_overruns; /* number of DMA overruns */ 156 struct bio_queue_head head; 157 struct bio *bp; /* active buffer */ 158 struct resource *res_ioport, *res_ctl, *res_irq, *res_drq; 159 int rid_ioport, rid_ctl, rid_irq, rid_drq; 160 int port_off; 161 bus_space_tag_t portt; 162 bus_space_handle_t porth; 163 bus_space_tag_t ctlt; 164 bus_space_handle_t ctlh; 165 void *fdc_intr; 166 struct device *fdc_dev; 167 void (*fdctl_wr)(struct fdc_data *fdc, u_int8_t v); 168 }; 169 170 #define FDBIO_FORMAT BIO_CMD2 171 172 typedef int fdu_t; 173 typedef int fdcu_t; 174 typedef int fdsu_t; 175 typedef struct fd_data *fd_p; 176 typedef struct fdc_data *fdc_p; 177 typedef enum fdc_type fdc_t; 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 * Timeout value for the PIO loops to wait until the FDC main status 215 * register matches our expectations (request for master, direction 216 * bit). This is supposed to be a number of microseconds, although 217 * timing might actually not be very accurate. 218 * 219 * Timeouts of 100 msec are believed to be required for some broken 220 * (old) hardware. 221 */ 222 #define FDSTS_TIMEOUT 100000 223 224 /* 225 * Number of subdevices that can be used for different density types. 226 */ 227 #define NUMDENS 16 228 229 #define FDBIO_RDSECTID BIO_CMD1 230 231 /* 232 * List of native drive densities. Order must match enum fd_drivetype 233 * in <sys/fdcio.h>. Upon attaching the drive, each of the 234 * programmable subdevices is initialized with the native density 235 * definition. 236 */ 237 static struct fd_type fd_native_types[] = 238 { 239 { 0 }, /* FDT_NONE */ 240 { 9,2,0xFF,0x2A,40, 720,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* FDT_360K */ 241 { 15,2,0xFF,0x1B,80,2400,FDC_500KBPS,2,0x54,1,0,FL_MFM }, /* FDT_12M */ 242 { 9,2,0xFF,0x20,80,1440,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* FDT_720K */ 243 { 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* FDT_144M */ 244 #if 0 /* we currently don't handle 2.88 MB */ 245 { 36,2,0xFF,0x1B,80,5760,FDC_1MBPS, 2,0x4C,1,1,FL_MFM|FL_PERPND } /*FDT_288M*/ 246 #else 247 { 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* FDT_144M */ 248 #endif 249 }; 250 251 /* 252 * 360 KB 5.25" and 720 KB 3.5" drives don't have automatic density 253 * selection, they just start out with their native density (or lose). 254 * So 1.2 MB 5.25", 1.44 MB 3.5", and 2.88 MB 3.5" drives have their 255 * respective lists of densities to search for. 256 */ 257 static struct fd_type fd_searchlist_12m[] = { 258 { 15,2,0xFF,0x1B,80,2400,FDC_500KBPS,2,0x54,1,0,FL_MFM }, /* 1.2M */ 259 { 9,2,0xFF,0x23,40, 720,FDC_300KBPS,2,0x50,1,0,FL_MFM|FL_2STEP }, /* 360K */ 260 { 9,2,0xFF,0x20,80,1440,FDC_300KBPS,2,0x50,1,0,FL_MFM }, /* 720K */ 261 }; 262 263 static struct fd_type fd_searchlist_144m[] = { 264 { 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* 1.44M */ 265 { 9,2,0xFF,0x20,80,1440,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* 720K */ 266 }; 267 268 /* We search for 1.44M first since this is the most common case. */ 269 static struct fd_type fd_searchlist_288m[] = { 270 { 18,2,0xFF,0x1B,80,2880,FDC_500KBPS,2,0x6C,1,0,FL_MFM }, /* 1.44M */ 271 #if 0 272 { 36,2,0xFF,0x1B,80,5760,FDC_1MBPS, 2,0x4C,1,1,FL_MFM|FL_PERPND } /* 2.88M */ 273 #endif 274 { 9,2,0xFF,0x20,80,1440,FDC_250KBPS,2,0x50,1,0,FL_MFM }, /* 720K */ 275 }; 276 277 #define MAX_SEC_SIZE (128 << 3) 278 #define MAX_CYLINDER 85 /* some people really stress their drives 279 * up to cyl 82 */ 280 #define MAX_HEAD 1 281 282 static devclass_t fdc_devclass; 283 284 /* 285 * Per drive structure (softc). 286 */ 287 struct fd_data { 288 struct fdc_data *fdc; /* pointer to controller structure */ 289 int fdsu; /* this units number on this controller */ 290 enum fd_drivetype type; /* drive type */ 291 struct fd_type *ft; /* pointer to current type descriptor */ 292 struct fd_type fts[NUMDENS]; /* type descriptors */ 293 int flags; 294 #define FD_OPEN 0x01 /* it's open */ 295 #define FD_NONBLOCK 0x02 /* O_NONBLOCK set */ 296 #define FD_ACTIVE 0x04 /* it's active */ 297 #define FD_MOTOR 0x08 /* motor should be on */ 298 #define FD_MOTOR_WAIT 0x10 /* motor coming up */ 299 #define FD_UA 0x20 /* force unit attention */ 300 int skip; 301 int hddrv; 302 #define FD_NO_TRACK -2 303 int track; /* where we think the head is */ 304 int options; /* user configurable options, see fdcio.h */ 305 struct callout_handle toffhandle; 306 struct callout_handle tohandle; 307 struct devstat *device_stats; 308 dev_t masterdev; 309 device_t dev; 310 fdu_t fdu; 311 }; 312 313 struct fdc_ivars { 314 int fdunit; 315 }; 316 static devclass_t fd_devclass; 317 318 /* configuration flags for fd */ 319 #define FD_TYPEMASK 0x0f /* drive type, matches enum 320 * fd_drivetype; on i386 machines, if 321 * given as 0, use RTC type for fd0 322 * and fd1 */ 323 #define FD_DTYPE(flags) ((flags) & FD_TYPEMASK) 324 #define FD_NO_CHLINE 0x10 /* drive does not support changeline 325 * aka. unit attention */ 326 #define FD_NO_PROBE 0x20 /* don't probe drive (seek test), just 327 * assume it is there */ 328 329 /* 330 * Throughout this file the following conventions will be used: 331 * 332 * fd is a pointer to the fd_data struct for the drive in question 333 * fdc is a pointer to the fdc_data struct for the controller 334 * fdu is the floppy drive unit number 335 * fdcu is the floppy controller unit number 336 * fdsu is the floppy drive unit number on that controller. (sub-unit) 337 */ 338 339 /* 340 * Function declarations, same (chaotic) order as they appear in the 341 * file. Re-ordering is too late now, it would only obfuscate the 342 * diffs against old and offspring versions (like the PC98 one). 343 * 344 * Anyone adding functions here, please keep this sequence the same 345 * as below -- makes locating a particular function in the body much 346 * easier. 347 */ 348 static void fdout_wr(fdc_p, u_int8_t); 349 static u_int8_t fdsts_rd(fdc_p); 350 static void fddata_wr(fdc_p, u_int8_t); 351 static u_int8_t fddata_rd(fdc_p); 352 static void fdctl_wr_isa(fdc_p, u_int8_t); 353 #if NCARD > 0 354 static void fdctl_wr_pcmcia(fdc_p, u_int8_t); 355 #endif 356 #if 0 357 static u_int8_t fdin_rd(fdc_p); 358 #endif 359 static int fdc_err(struct fdc_data *, const char *); 360 static int fd_cmd(struct fdc_data *, int, ...); 361 static int enable_fifo(fdc_p fdc); 362 static int fd_sense_drive_status(fdc_p, int *); 363 static int fd_sense_int(fdc_p, int *, int *); 364 static int fd_read_status(fdc_p); 365 static int fdc_alloc_resources(struct fdc_data *); 366 static void fdc_release_resources(struct fdc_data *); 367 static int fdc_read_ivar(device_t, device_t, int, uintptr_t *); 368 static int fdc_probe(device_t); 369 #if NCARD > 0 370 static int fdc_pccard_probe(device_t); 371 #endif 372 static int fdc_detach(device_t dev); 373 static void fdc_add_child(device_t, const char *, int); 374 static int fdc_attach(device_t); 375 static int fdc_print_child(device_t, device_t); 376 static int fd_probe(device_t); 377 static int fd_attach(device_t); 378 static int fd_detach(device_t); 379 static void set_motor(struct fdc_data *, int, int); 380 # define TURNON 1 381 # define TURNOFF 0 382 static timeout_t fd_turnoff; 383 static timeout_t fd_motor_on; 384 static void fd_turnon(struct fd_data *); 385 static void fdc_reset(fdc_p); 386 static int fd_in(struct fdc_data *, int *); 387 static int out_fdc(struct fdc_data *, int); 388 /* 389 * The open function is named fdopen() to avoid confusion with fdopen() 390 * in fd(4). The difference is now only meaningful for debuggers. 391 */ 392 static d_open_t fdopen; 393 static d_close_t fdclose; 394 static d_strategy_t fdstrategy; 395 static void fdstart(struct fdc_data *); 396 static timeout_t fd_iotimeout; 397 static timeout_t fd_pseudointr; 398 static driver_intr_t fdc_intr; 399 static int fdcpio(fdc_p, long, caddr_t, u_int); 400 static int fdautoselect(dev_t); 401 static int fdstate(struct fdc_data *); 402 static int retrier(struct fdc_data *); 403 static void fdbiodone(struct bio *); 404 static int fdmisccmd(dev_t, u_int, void *); 405 static d_ioctl_t fdioctl; 406 407 static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */ 408 409 #ifdef FDC_DEBUG 410 /* CAUTION: fd_debug causes huge amounts of logging output */ 411 static int volatile fd_debug = 0; 412 #define TRACE0(arg) do { if (fd_debug) printf(arg); } while (0) 413 #define TRACE1(arg1, arg2) do { if (fd_debug) printf(arg1, arg2); } while (0) 414 #else /* FDC_DEBUG */ 415 #define TRACE0(arg) do { } while (0) 416 #define TRACE1(arg1, arg2) do { } while (0) 417 #endif /* FDC_DEBUG */ 418 419 /* 420 * Bus space handling (access to low-level IO). 421 */ 422 static void 423 fdout_wr(fdc_p fdc, u_int8_t v) 424 { 425 bus_space_write_1(fdc->portt, fdc->porth, FDOUT+fdc->port_off, v); 426 } 427 428 static u_int8_t 429 fdsts_rd(fdc_p fdc) 430 { 431 return bus_space_read_1(fdc->portt, fdc->porth, FDSTS+fdc->port_off); 432 } 433 434 static void 435 fddata_wr(fdc_p fdc, u_int8_t v) 436 { 437 bus_space_write_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off, v); 438 } 439 440 static u_int8_t 441 fddata_rd(fdc_p fdc) 442 { 443 return bus_space_read_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off); 444 } 445 446 static void 447 fdctl_wr_isa(fdc_p fdc, u_int8_t v) 448 { 449 bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v); 450 } 451 452 #if NCARD > 0 453 static void 454 fdctl_wr_pcmcia(fdc_p fdc, u_int8_t v) 455 { 456 bus_space_write_1(fdc->portt, fdc->porth, FDCTL+fdc->port_off, v); 457 } 458 #endif 459 460 static u_int8_t 461 fdin_rd(fdc_p fdc) 462 { 463 return bus_space_read_1(fdc->portt, fdc->porth, FDIN); 464 } 465 466 static struct cdevsw fd_cdevsw = { 467 .d_version = D_VERSION, 468 .d_open = fdopen, 469 .d_close = fdclose, 470 .d_read = physread, 471 .d_write = physwrite, 472 .d_ioctl = fdioctl, 473 .d_strategy = fdstrategy, 474 .d_name = "fd", 475 .d_flags = D_DISK | D_NEEDGIANT, 476 }; 477 478 /* 479 * Auxiliary functions. Well, some only. Others are scattered 480 * throughout the entire file. 481 */ 482 static int 483 fdc_err(struct fdc_data *fdc, const char *s) 484 { 485 fdc->fdc_errs++; 486 if (s) { 487 if (fdc->fdc_errs < FDC_ERRMAX) 488 device_printf(fdc->fdc_dev, "%s", s); 489 else if (fdc->fdc_errs == FDC_ERRMAX) 490 device_printf(fdc->fdc_dev, "too many errors, not " 491 "logging any more\n"); 492 } 493 494 return FD_FAILED; 495 } 496 497 /* 498 * fd_cmd: Send a command to the chip. Takes a varargs with this structure: 499 * Unit number, 500 * # of output bytes, output bytes as ints ..., 501 * # of input bytes, input bytes as ints ... 502 */ 503 static int 504 fd_cmd(struct fdc_data *fdc, int n_out, ...) 505 { 506 u_char cmd; 507 int n_in; 508 int n; 509 va_list ap; 510 511 va_start(ap, n_out); 512 cmd = (u_char)(va_arg(ap, int)); 513 va_end(ap); 514 va_start(ap, n_out); 515 for (n = 0; n < n_out; n++) 516 { 517 if (out_fdc(fdc, va_arg(ap, int)) < 0) 518 { 519 char msg[50]; 520 snprintf(msg, sizeof(msg), 521 "cmd %x failed at out byte %d of %d\n", 522 cmd, n + 1, n_out); 523 return fdc_err(fdc, msg); 524 } 525 } 526 n_in = va_arg(ap, int); 527 for (n = 0; n < n_in; n++) 528 { 529 int *ptr = va_arg(ap, int *); 530 if (fd_in(fdc, ptr) < 0) 531 { 532 char msg[50]; 533 snprintf(msg, sizeof(msg), 534 "cmd %02x failed at in byte %d of %d\n", 535 cmd, n + 1, n_in); 536 return fdc_err(fdc, msg); 537 } 538 } 539 540 return 0; 541 } 542 543 static int 544 enable_fifo(fdc_p fdc) 545 { 546 int i, j; 547 548 if ((fdc->flags & FDC_HAS_FIFO) == 0) { 549 550 /* 551 * Cannot use fd_cmd the normal way here, since 552 * this might be an invalid command. Thus we send the 553 * first byte, and check for an early turn of data directon. 554 */ 555 556 if (out_fdc(fdc, I8207X_CONFIGURE) < 0) 557 return fdc_err(fdc, "Enable FIFO failed\n"); 558 559 /* If command is invalid, return */ 560 j = FDSTS_TIMEOUT; 561 while ((i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM)) 562 != NE7_RQM && j-- > 0) { 563 if (i == (NE7_DIO | NE7_RQM)) { 564 fdc_reset(fdc); 565 return FD_FAILED; 566 } 567 DELAY(1); 568 } 569 if (j<0 || 570 fd_cmd(fdc, 3, 571 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) { 572 fdc_reset(fdc); 573 return fdc_err(fdc, "Enable FIFO failed\n"); 574 } 575 fdc->flags |= FDC_HAS_FIFO; 576 return 0; 577 } 578 if (fd_cmd(fdc, 4, 579 I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) 580 return fdc_err(fdc, "Re-enable FIFO failed\n"); 581 return 0; 582 } 583 584 static int 585 fd_sense_drive_status(fdc_p fdc, int *st3p) 586 { 587 int st3; 588 589 if (fd_cmd(fdc, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3)) 590 { 591 return fdc_err(fdc, "Sense Drive Status failed\n"); 592 } 593 if (st3p) 594 *st3p = st3; 595 596 return 0; 597 } 598 599 static int 600 fd_sense_int(fdc_p fdc, int *st0p, int *cylp) 601 { 602 int cyl, st0, ret; 603 604 ret = fd_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); 605 if (ret) { 606 (void)fdc_err(fdc, 607 "sense intr err reading stat reg 0\n"); 608 return ret; 609 } 610 611 if (st0p) 612 *st0p = st0; 613 614 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { 615 /* 616 * There doesn't seem to have been an interrupt. 617 */ 618 return FD_NOT_VALID; 619 } 620 621 if (fd_in(fdc, &cyl) < 0) { 622 return fdc_err(fdc, "can't get cyl num\n"); 623 } 624 625 if (cylp) 626 *cylp = cyl; 627 628 return 0; 629 } 630 631 632 static int 633 fd_read_status(fdc_p fdc) 634 { 635 int i, ret; 636 637 for (i = ret = 0; i < 7; i++) { 638 /* 639 * XXX types are poorly chosen. Only bytes can be read 640 * from the hardware, but fdc->status[] wants u_ints and 641 * fd_in() gives ints. 642 */ 643 int status; 644 645 ret = fd_in(fdc, &status); 646 fdc->status[i] = status; 647 if (ret != 0) 648 break; 649 } 650 651 if (ret == 0) 652 fdc->flags |= FDC_STAT_VALID; 653 else 654 fdc->flags &= ~FDC_STAT_VALID; 655 656 return ret; 657 } 658 659 static int 660 fdc_alloc_resources(struct fdc_data *fdc) 661 { 662 device_t dev; 663 int ispnp, ispcmcia, nports; 664 665 dev = fdc->fdc_dev; 666 ispnp = (fdc->flags & FDC_ISPNP) != 0; 667 ispcmcia = (fdc->flags & FDC_ISPCMCIA) != 0; 668 fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0; 669 fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0; 670 fdc->rid_ctl = 1; 671 672 /* 673 * On standard ISA, we don't just use an 8 port range 674 * (e.g. 0x3f0-0x3f7) since that covers an IDE control 675 * register at 0x3f6. 676 * 677 * Isn't PC hardware wonderful. 678 * 679 * The Y-E Data PCMCIA FDC doesn't have this problem, it 680 * uses the register with offset 6 for pseudo-DMA, and the 681 * one with offset 7 as control register. 682 */ 683 nports = ispcmcia ? 8 : (ispnp ? 1 : 6); 684 685 /* 686 * Some ACPI BIOSen have _CRS objects for the floppy device that 687 * split the I/O port resource into several resources. We detect 688 * this case by checking if there are more than 2 IOPORT resources. 689 * If so, we use the resource with the smallest start address as 690 * the port RID and the largest start address as the control RID. 691 */ 692 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 2) != 0) { 693 u_long min_start, max_start, tmp; 694 int i; 695 696 /* Find the min/max start addresses and their RIDs. */ 697 max_start = 0ul; 698 min_start = ~0ul; 699 for (i = 0; bus_get_resource_count(dev, SYS_RES_IOPORT, i) > 0; 700 i++) { 701 tmp = bus_get_resource_start(dev, SYS_RES_IOPORT, i); 702 KASSERT(tmp != 0, ("bogus resource")); 703 if (tmp < min_start) { 704 min_start = tmp; 705 fdc->rid_ioport = i; 706 } 707 if (tmp > max_start) { 708 max_start = tmp; 709 fdc->rid_ctl = i; 710 } 711 } 712 if (min_start + 7 != max_start) { 713 device_printf(dev, "I/O to control range incorrect\n"); 714 return (ENXIO); 715 } 716 } 717 718 fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT, 719 &fdc->rid_ioport, 0ul, ~0ul, 720 nports, RF_ACTIVE); 721 if (fdc->res_ioport == 0) { 722 device_printf(dev, "cannot reserve I/O port range (%d ports)\n", 723 nports); 724 return ENXIO; 725 } 726 fdc->portt = rman_get_bustag(fdc->res_ioport); 727 fdc->porth = rman_get_bushandle(fdc->res_ioport); 728 729 if (!ispcmcia) { 730 /* 731 * Some BIOSen report the device at 0x3f2-0x3f5,0x3f7 732 * and some at 0x3f0-0x3f5,0x3f7. We detect the former 733 * by checking the size and adjust the port address 734 * accordingly. 735 */ 736 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 0) == 4) 737 fdc->port_off = -2; 738 739 /* 740 * Register the control port range as rid 1 if it 741 * isn't there already. Most PnP BIOSen will have 742 * already done this but non-PnP configurations don't. 743 * 744 * And some (!!) report 0x3f2-0x3f5 and completely 745 * leave out the control register! It seems that some 746 * non-antique controller chips have a different 747 * method of programming the transfer speed which 748 * doesn't require the control register, but it's 749 * mighty bogus as the chip still responds to the 750 * address for the control register. 751 */ 752 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 1) == 0) { 753 u_long ctlstart; 754 755 /* Find the control port, usually 0x3f7 */ 756 ctlstart = rman_get_start(fdc->res_ioport) + 757 fdc->port_off + 7; 758 759 bus_set_resource(dev, SYS_RES_IOPORT, 1, ctlstart, 1); 760 } 761 762 /* 763 * Now (finally!) allocate the control port. 764 */ 765 fdc->res_ctl = bus_alloc_resource(dev, SYS_RES_IOPORT, 766 &fdc->rid_ctl, 767 0ul, ~0ul, 1, RF_ACTIVE); 768 if (fdc->res_ctl == 0) { 769 device_printf(dev, 770 "cannot reserve control I/O port range (control port)\n"); 771 return ENXIO; 772 } 773 fdc->ctlt = rman_get_bustag(fdc->res_ctl); 774 fdc->ctlh = rman_get_bushandle(fdc->res_ctl); 775 } 776 777 fdc->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ, 778 &fdc->rid_irq, 0ul, ~0ul, 1, 779 RF_ACTIVE); 780 if (fdc->res_irq == 0) { 781 device_printf(dev, "cannot reserve interrupt line\n"); 782 return ENXIO; 783 } 784 785 if ((fdc->flags & FDC_NODMA) == 0) { 786 fdc->res_drq = bus_alloc_resource(dev, SYS_RES_DRQ, 787 &fdc->rid_drq, 0ul, ~0ul, 1, 788 RF_ACTIVE); 789 if (fdc->res_drq == 0) { 790 device_printf(dev, "cannot reserve DMA request line\n"); 791 return ENXIO; 792 } 793 fdc->dmachan = fdc->res_drq->r_start; 794 } 795 796 return 0; 797 } 798 799 static void 800 fdc_release_resources(struct fdc_data *fdc) 801 { 802 device_t dev; 803 804 dev = fdc->fdc_dev; 805 if (fdc->res_irq != 0) { 806 bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 807 fdc->res_irq); 808 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 809 fdc->res_irq); 810 } 811 if (fdc->res_ctl != 0) { 812 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 813 fdc->res_ctl); 814 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 815 fdc->res_ctl); 816 } 817 if (fdc->res_ioport != 0) { 818 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 819 fdc->res_ioport); 820 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 821 fdc->res_ioport); 822 } 823 if (fdc->res_drq != 0) { 824 bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 825 fdc->res_drq); 826 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 827 fdc->res_drq); 828 } 829 } 830 831 /* 832 * Configuration/initialization stuff, per controller. 833 */ 834 835 static struct isa_pnp_id fdc_ids[] = { 836 {0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */ 837 {0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */ 838 {0} 839 }; 840 841 static int 842 fdc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 843 { 844 struct fdc_ivars *ivars = device_get_ivars(child); 845 846 switch (which) { 847 case FDC_IVAR_FDUNIT: 848 *result = ivars->fdunit; 849 break; 850 default: 851 return ENOENT; 852 } 853 return 0; 854 } 855 856 static int 857 fdc_probe(device_t dev) 858 { 859 int error, ic_type; 860 struct fdc_data *fdc; 861 862 fdc = device_get_softc(dev); 863 bzero(fdc, sizeof *fdc); 864 fdc->fdc_dev = dev; 865 fdc->fdctl_wr = fdctl_wr_isa; 866 867 /* Check pnp ids */ 868 error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids); 869 if (error == ENXIO) 870 return ENXIO; 871 if (error == 0) 872 fdc->flags |= FDC_ISPNP; 873 874 /* Attempt to allocate our resources for the duration of the probe */ 875 error = fdc_alloc_resources(fdc); 876 if (error) 877 goto out; 878 879 /* First - lets reset the floppy controller */ 880 fdout_wr(fdc, 0); 881 DELAY(100); 882 fdout_wr(fdc, FDO_FRST); 883 884 /* see if it can handle a command */ 885 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 886 NE7_SPEC_2(2, 0), 0)) { 887 error = ENXIO; 888 goto out; 889 } 890 891 if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) { 892 ic_type = (u_char)ic_type; 893 switch (ic_type) { 894 case 0x80: 895 device_set_desc(dev, "NEC 765 or clone"); 896 fdc->fdct = FDC_NE765; 897 break; 898 case 0x81: /* not mentioned in any hardware doc */ 899 case 0x90: 900 device_set_desc(dev, 901 "Enhanced floppy controller (i82077, NE72065 or clone)"); 902 fdc->fdct = FDC_ENHANCED; 903 break; 904 default: 905 device_set_desc(dev, "Generic floppy controller"); 906 fdc->fdct = FDC_UNKNOWN; 907 break; 908 } 909 } 910 911 out: 912 fdc_release_resources(fdc); 913 return (error); 914 } 915 916 #if NCARD > 0 917 918 static int 919 fdc_pccard_probe(device_t dev) 920 { 921 int error; 922 struct fdc_data *fdc; 923 924 fdc = device_get_softc(dev); 925 bzero(fdc, sizeof *fdc); 926 fdc->fdc_dev = dev; 927 fdc->fdctl_wr = fdctl_wr_pcmcia; 928 929 fdc->flags |= FDC_ISPCMCIA | FDC_NODMA; 930 931 /* Attempt to allocate our resources for the duration of the probe */ 932 error = fdc_alloc_resources(fdc); 933 if (error) 934 goto out; 935 936 /* First - lets reset the floppy controller */ 937 fdout_wr(fdc, 0); 938 DELAY(100); 939 fdout_wr(fdc, FDO_FRST); 940 941 /* see if it can handle a command */ 942 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 943 NE7_SPEC_2(2, 0), 0)) { 944 error = ENXIO; 945 goto out; 946 } 947 948 device_set_desc(dev, "Y-E Data PCMCIA floppy"); 949 fdc->fdct = FDC_NE765; 950 951 out: 952 fdc_release_resources(fdc); 953 return (error); 954 } 955 956 #endif /* NCARD > 0 */ 957 958 static int 959 fdc_detach(device_t dev) 960 { 961 struct fdc_data *fdc; 962 int error; 963 964 fdc = device_get_softc(dev); 965 966 /* have our children detached first */ 967 if ((error = bus_generic_detach(dev))) 968 return (error); 969 970 /* reset controller, turn motor off */ 971 fdout_wr(fdc, 0); 972 973 if ((fdc->flags & FDC_NODMA) == 0) 974 isa_dma_release(fdc->dmachan); 975 976 if ((fdc->flags & FDC_ATTACHED) == 0) { 977 device_printf(dev, "already unloaded\n"); 978 return (0); 979 } 980 fdc->flags &= ~FDC_ATTACHED; 981 982 BUS_TEARDOWN_INTR(device_get_parent(dev), dev, fdc->res_irq, 983 fdc->fdc_intr); 984 fdc_release_resources(fdc); 985 device_printf(dev, "unload\n"); 986 return (0); 987 } 988 989 /* 990 * Add a child device to the fdc controller. It will then be probed etc. 991 */ 992 static void 993 fdc_add_child(device_t dev, const char *name, int unit) 994 { 995 int flags; 996 struct fdc_ivars *ivar; 997 device_t child; 998 999 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT | M_ZERO); 1000 if (ivar == NULL) 1001 return; 1002 if (resource_int_value(name, unit, "drive", &ivar->fdunit) != 0) 1003 ivar->fdunit = 0; 1004 child = device_add_child(dev, name, unit); 1005 if (child == NULL) { 1006 free(ivar, M_DEVBUF); 1007 return; 1008 } 1009 device_set_ivars(child, ivar); 1010 if (resource_int_value(name, unit, "flags", &flags) == 0) 1011 device_set_flags(child, flags); 1012 if (resource_disabled(name, unit)) 1013 device_disable(child); 1014 } 1015 1016 static int 1017 fdc_attach(device_t dev) 1018 { 1019 struct fdc_data *fdc; 1020 const char *name, *dname; 1021 int i, error, dunit; 1022 1023 fdc = device_get_softc(dev); 1024 error = fdc_alloc_resources(fdc); 1025 if (error) { 1026 device_printf(dev, "cannot re-acquire resources\n"); 1027 return error; 1028 } 1029 error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq, 1030 INTR_TYPE_BIO | INTR_ENTROPY, fdc_intr, fdc, 1031 &fdc->fdc_intr); 1032 if (error) { 1033 device_printf(dev, "cannot setup interrupt\n"); 1034 return error; 1035 } 1036 fdc->fdcu = device_get_unit(dev); 1037 fdc->flags |= FDC_ATTACHED | FDC_NEEDS_RESET; 1038 1039 if ((fdc->flags & FDC_NODMA) == 0) { 1040 /* 1041 * Acquire the DMA channel forever, the driver will do 1042 * the rest 1043 * XXX should integrate with rman 1044 */ 1045 isa_dma_acquire(fdc->dmachan); 1046 isa_dmainit(fdc->dmachan, MAX_SEC_SIZE); 1047 } 1048 fdc->state = DEVIDLE; 1049 1050 /* reset controller, turn motor off, clear fdout mirror reg */ 1051 fdout_wr(fdc, fdc->fdout = 0); 1052 bioq_init(&fdc->head); 1053 1054 /* 1055 * Probe and attach any children. We should probably detect 1056 * devices from the BIOS unless overridden. 1057 */ 1058 name = device_get_nameunit(dev); 1059 i = 0; 1060 while ((resource_find_match(&i, &dname, &dunit, "at", name)) == 0) 1061 fdc_add_child(dev, dname, dunit); 1062 1063 if ((error = bus_generic_attach(dev)) != 0) 1064 return (error); 1065 1066 return (0); 1067 } 1068 1069 static int 1070 fdc_print_child(device_t me, device_t child) 1071 { 1072 int retval = 0, flags; 1073 1074 retval += bus_print_child_header(me, child); 1075 retval += printf(" on %s drive %d", device_get_nameunit(me), 1076 fdc_get_fdunit(child)); 1077 if ((flags = device_get_flags(me)) != 0) 1078 retval += printf(" flags %#x", flags); 1079 retval += printf("\n"); 1080 1081 return (retval); 1082 } 1083 1084 static device_method_t fdc_methods[] = { 1085 /* Device interface */ 1086 DEVMETHOD(device_probe, fdc_probe), 1087 DEVMETHOD(device_attach, fdc_attach), 1088 DEVMETHOD(device_detach, fdc_detach), 1089 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1090 DEVMETHOD(device_suspend, bus_generic_suspend), 1091 DEVMETHOD(device_resume, bus_generic_resume), 1092 1093 /* Bus interface */ 1094 DEVMETHOD(bus_print_child, fdc_print_child), 1095 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 1096 /* Our children never use any other bus interface methods. */ 1097 1098 { 0, 0 } 1099 }; 1100 1101 static driver_t fdc_driver = { 1102 "fdc", 1103 fdc_methods, 1104 sizeof(struct fdc_data) 1105 }; 1106 1107 DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0); 1108 DRIVER_MODULE(fdc, acpi, fdc_driver, fdc_devclass, 0, 0); 1109 1110 #if NCARD > 0 1111 1112 static device_method_t fdc_pccard_methods[] = { 1113 /* Device interface */ 1114 DEVMETHOD(device_probe, fdc_pccard_probe), 1115 DEVMETHOD(device_attach, fdc_attach), 1116 DEVMETHOD(device_detach, fdc_detach), 1117 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1118 DEVMETHOD(device_suspend, bus_generic_suspend), 1119 DEVMETHOD(device_resume, bus_generic_resume), 1120 1121 /* Bus interface */ 1122 DEVMETHOD(bus_print_child, fdc_print_child), 1123 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 1124 /* Our children never use any other bus interface methods. */ 1125 1126 { 0, 0 } 1127 }; 1128 1129 static driver_t fdc_pccard_driver = { 1130 "fdc", 1131 fdc_pccard_methods, 1132 sizeof(struct fdc_data) 1133 }; 1134 1135 DRIVER_MODULE(fdc, pccard, fdc_pccard_driver, fdc_devclass, 0, 0); 1136 1137 #endif /* NCARD > 0 */ 1138 1139 1140 /* 1141 * Configuration/initialization, per drive. 1142 */ 1143 static int 1144 fd_probe(device_t dev) 1145 { 1146 int i; 1147 u_int st0, st3; 1148 struct fd_data *fd; 1149 struct fdc_data *fdc; 1150 fdsu_t fdsu; 1151 int flags; 1152 1153 fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */ 1154 fd = device_get_softc(dev); 1155 fdc = device_get_softc(device_get_parent(dev)); 1156 flags = device_get_flags(dev); 1157 1158 bzero(fd, sizeof *fd); 1159 fd->dev = dev; 1160 fd->fdc = fdc; 1161 fd->fdsu = fdsu; 1162 fd->fdu = device_get_unit(dev); 1163 fd->flags = FD_UA; /* make sure fdautoselect() will be called */ 1164 1165 fd->type = FD_DTYPE(flags); 1166 /* 1167 * XXX I think using __i386__ is wrong here since we actually want to probe 1168 * for the machine type, not the CPU type (so non-PC arch's like the PC98 will 1169 * fail the probe). However, for whatever reason, testing for _MACHINE_ARCH 1170 * == i386 breaks the test on FreeBSD/Alpha. 1171 */ 1172 #if defined(__i386__) || defined(__amd64__) 1173 if (fd->type == FDT_NONE && (fd->fdu == 0 || fd->fdu == 1)) { 1174 /* Look up what the BIOS thinks we have. */ 1175 if (fd->fdu == 0) { 1176 if ((fdc->flags & FDC_ISPCMCIA)) 1177 /* 1178 * Somewhat special. No need to force the 1179 * user to set device flags, since the Y-E 1180 * Data PCMCIA floppy is always a 1.44 MB 1181 * device. 1182 */ 1183 fd->type = FDT_144M; 1184 else 1185 fd->type = (rtcin(RTC_FDISKETTE) & 0xf0) >> 4; 1186 } else { 1187 fd->type = rtcin(RTC_FDISKETTE) & 0x0f; 1188 } 1189 if (fd->type == FDT_288M_1) 1190 fd->type = FDT_288M; 1191 } 1192 #endif /* __i386__ || __amd64__ */ 1193 /* is there a unit? */ 1194 if (fd->type == FDT_NONE) 1195 return (ENXIO); 1196 1197 /* select it */ 1198 set_motor(fdc, fdsu, TURNON); 1199 fdc_reset(fdc); /* XXX reset, then unreset, etc. */ 1200 DELAY(1000000); /* 1 sec */ 1201 1202 /* XXX This doesn't work before the first set_motor() */ 1203 if ((fdc->flags & FDC_HAS_FIFO) == 0 && 1204 fdc->fdct == FDC_ENHANCED && 1205 (device_get_flags(fdc->fdc_dev) & FDC_NO_FIFO) == 0 && 1206 enable_fifo(fdc) == 0) { 1207 device_printf(device_get_parent(dev), 1208 "FIFO enabled, %d bytes threshold\n", fifo_threshold); 1209 } 1210 1211 if ((flags & FD_NO_PROBE) == 0) { 1212 /* If we're at track 0 first seek inwards. */ 1213 if ((fd_sense_drive_status(fdc, &st3) == 0) && 1214 (st3 & NE7_ST3_T0)) { 1215 /* Seek some steps... */ 1216 if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 1217 /* ...wait a moment... */ 1218 DELAY(300000); 1219 /* make ctrlr happy: */ 1220 fd_sense_int(fdc, 0, 0); 1221 } 1222 } 1223 1224 for (i = 0; i < 2; i++) { 1225 /* 1226 * we must recalibrate twice, just in case the 1227 * heads have been beyond cylinder 76, since 1228 * most FDCs still barf when attempting to 1229 * recalibrate more than 77 steps 1230 */ 1231 /* go back to 0: */ 1232 if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1233 /* a second being enough for full stroke seek*/ 1234 DELAY(i == 0 ? 1000000 : 300000); 1235 1236 /* anything responding? */ 1237 if (fd_sense_int(fdc, &st0, 0) == 0 && 1238 (st0 & NE7_ST0_EC) == 0) 1239 break; /* already probed succesfully */ 1240 } 1241 } 1242 } 1243 1244 set_motor(fdc, fdsu, TURNOFF); 1245 1246 if ((flags & FD_NO_PROBE) == 0 && 1247 (st0 & NE7_ST0_EC) != 0) /* no track 0 -> no drive present */ 1248 return (ENXIO); 1249 1250 switch (fd->type) { 1251 case FDT_12M: 1252 device_set_desc(dev, "1200-KB 5.25\" drive"); 1253 fd->type = FDT_12M; 1254 break; 1255 case FDT_144M: 1256 device_set_desc(dev, "1440-KB 3.5\" drive"); 1257 fd->type = FDT_144M; 1258 break; 1259 case FDT_288M: 1260 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 1261 fd->type = FDT_288M; 1262 break; 1263 case FDT_360K: 1264 device_set_desc(dev, "360-KB 5.25\" drive"); 1265 fd->type = FDT_360K; 1266 break; 1267 case FDT_720K: 1268 device_set_desc(dev, "720-KB 3.5\" drive"); 1269 fd->type = FDT_720K; 1270 break; 1271 default: 1272 return (ENXIO); 1273 } 1274 fd->track = FD_NO_TRACK; 1275 fd->fdc = fdc; 1276 fd->fdsu = fdsu; 1277 fd->options = 0; 1278 callout_handle_init(&fd->toffhandle); 1279 callout_handle_init(&fd->tohandle); 1280 1281 /* initialize densities for subdevices */ 1282 for (i = 0; i < NUMDENS; i++) 1283 memcpy(fd->fts + i, fd_native_types + fd->type, 1284 sizeof(struct fd_type)); 1285 return (0); 1286 } 1287 1288 static int 1289 fd_attach(device_t dev) 1290 { 1291 struct fd_data *fd; 1292 1293 fd = device_get_softc(dev); 1294 fd->masterdev = make_dev(&fd_cdevsw, fd->fdu, 1295 UID_ROOT, GID_OPERATOR, 0640, "fd%d", fd->fdu); 1296 fd->masterdev->si_drv1 = fd; 1297 fd->device_stats = devstat_new_entry(device_get_name(dev), 1298 device_get_unit(dev), 0, DEVSTAT_NO_ORDERED_TAGS, 1299 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER, 1300 DEVSTAT_PRIORITY_FD); 1301 return (0); 1302 } 1303 1304 static int 1305 fd_detach(device_t dev) 1306 { 1307 struct fd_data *fd; 1308 1309 fd = device_get_softc(dev); 1310 untimeout(fd_turnoff, fd, fd->toffhandle); 1311 devstat_remove_entry(fd->device_stats); 1312 destroy_dev(fd->masterdev); 1313 1314 return (0); 1315 } 1316 1317 static device_method_t fd_methods[] = { 1318 /* Device interface */ 1319 DEVMETHOD(device_probe, fd_probe), 1320 DEVMETHOD(device_attach, fd_attach), 1321 DEVMETHOD(device_detach, fd_detach), 1322 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1323 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 1324 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 1325 1326 { 0, 0 } 1327 }; 1328 1329 static driver_t fd_driver = { 1330 "fd", 1331 fd_methods, 1332 sizeof(struct fd_data) 1333 }; 1334 1335 DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, 0, 0); 1336 1337 /* 1338 * More auxiliary functions. 1339 */ 1340 /* 1341 * Motor control stuff. 1342 * Remember to not deselect the drive we're working on. 1343 */ 1344 static void 1345 set_motor(struct fdc_data *fdc, int fdsu, int turnon) 1346 { 1347 int fdout; 1348 1349 fdout = fdc->fdout; 1350 if (turnon) { 1351 fdout &= ~FDO_FDSEL; 1352 fdout |= (FDO_MOEN0 << fdsu) | FDO_FDMAEN | FDO_FRST | fdsu; 1353 } else 1354 fdout &= ~(FDO_MOEN0 << fdsu); 1355 fdc->fdout = fdout; 1356 fdout_wr(fdc, fdout); 1357 TRACE1("[0x%x->FDOUT]", fdout); 1358 } 1359 1360 static void 1361 fd_turnoff(void *xfd) 1362 { 1363 int s; 1364 fd_p fd = xfd; 1365 1366 TRACE1("[fd%d: turnoff]", fd->fdu); 1367 1368 s = splbio(); 1369 /* 1370 * Don't turn off the motor yet if the drive is active. 1371 * 1372 * If we got here, this could only mean we missed an interrupt. 1373 * This can e. g. happen on the Y-E Date PCMCIA floppy controller 1374 * after a controller reset. Just schedule a pseudo-interrupt 1375 * so the state machine gets re-entered. 1376 */ 1377 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) { 1378 fdc_intr(fd->fdc); 1379 splx(s); 1380 return; 1381 } 1382 1383 fd->flags &= ~FD_MOTOR; 1384 set_motor(fd->fdc, fd->fdsu, TURNOFF); 1385 splx(s); 1386 } 1387 1388 static void 1389 fd_motor_on(void *xfd) 1390 { 1391 int s; 1392 fd_p fd = xfd; 1393 1394 s = splbio(); 1395 fd->flags &= ~FD_MOTOR_WAIT; 1396 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT)) 1397 { 1398 fdc_intr(fd->fdc); 1399 } 1400 splx(s); 1401 } 1402 1403 static void 1404 fd_turnon(fd_p fd) 1405 { 1406 if(!(fd->flags & FD_MOTOR)) 1407 { 1408 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT); 1409 set_motor(fd->fdc, fd->fdsu, TURNON); 1410 timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */ 1411 } 1412 } 1413 1414 static void 1415 fdc_reset(fdc_p fdc) 1416 { 1417 /* Try a reset, keep motor on */ 1418 fdout_wr(fdc, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1419 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1420 DELAY(100); 1421 /* enable FDC, but defer interrupts a moment */ 1422 fdout_wr(fdc, fdc->fdout & ~FDO_FDMAEN); 1423 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN); 1424 DELAY(100); 1425 fdout_wr(fdc, fdc->fdout); 1426 TRACE1("[0x%x->FDOUT]", fdc->fdout); 1427 1428 /* XXX after a reset, silently believe the FDC will accept commands */ 1429 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1430 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1431 0); 1432 if (fdc->flags & FDC_HAS_FIFO) 1433 (void) enable_fifo(fdc); 1434 } 1435 1436 /* 1437 * FDC IO functions, take care of the main status register, timeout 1438 * in case the desired status bits are never set. 1439 * 1440 * These PIO loops initially start out with short delays between 1441 * each iteration in the expectation that the required condition 1442 * is usually met quickly, so it can be handled immediately. After 1443 * about 1 ms, stepping is increased to achieve a better timing 1444 * accuracy in the calls to DELAY(). 1445 */ 1446 static int 1447 fd_in(struct fdc_data *fdc, int *ptr) 1448 { 1449 int i, j, step; 1450 1451 for (j = 0, step = 1; 1452 (i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) != (NE7_DIO|NE7_RQM) && 1453 j < FDSTS_TIMEOUT; 1454 j += step) { 1455 if (i == NE7_RQM) 1456 return (fdc_err(fdc, "ready for output in input\n")); 1457 if (j == 1000) 1458 step = 1000; 1459 DELAY(step); 1460 } 1461 if (j >= FDSTS_TIMEOUT) 1462 return (fdc_err(fdc, bootverbose? "input ready timeout\n": 0)); 1463 #ifdef FDC_DEBUG 1464 i = fddata_rd(fdc); 1465 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1466 *ptr = i; 1467 return (0); 1468 #else /* !FDC_DEBUG */ 1469 i = fddata_rd(fdc); 1470 if (ptr) 1471 *ptr = i; 1472 return (0); 1473 #endif /* FDC_DEBUG */ 1474 } 1475 1476 static int 1477 out_fdc(struct fdc_data *fdc, int x) 1478 { 1479 int i, j, step; 1480 1481 for (j = 0, step = 1; 1482 (i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) != NE7_RQM && 1483 j < FDSTS_TIMEOUT; 1484 j += step) { 1485 if (i == (NE7_DIO|NE7_RQM)) 1486 return (fdc_err(fdc, "ready for input in output\n")); 1487 if (j == 1000) 1488 step = 1000; 1489 DELAY(step); 1490 } 1491 if (j >= FDSTS_TIMEOUT) 1492 return (fdc_err(fdc, bootverbose? "output ready timeout\n": 0)); 1493 1494 /* Send the command and return */ 1495 fddata_wr(fdc, x); 1496 TRACE1("[0x%x->FDDATA]", x); 1497 return (0); 1498 } 1499 1500 /* 1501 * Block device driver interface functions (interspersed with even more 1502 * auxiliary functions). 1503 */ 1504 static int 1505 fdopen(dev_t dev, int flags, int mode, struct thread *td) 1506 { 1507 fd_p fd; 1508 fdc_p fdc; 1509 int rv, unitattn, dflags; 1510 1511 fd = dev->si_drv1; 1512 if (fd == NULL) 1513 return (ENXIO); 1514 fdc = fd->fdc; 1515 if ((fdc == NULL) || (fd->type == FDT_NONE)) 1516 return (ENXIO); 1517 dflags = device_get_flags(fd->dev); 1518 /* 1519 * This is a bit bogus. It's still possible that e. g. a 1520 * descriptor gets inherited to a child, but then it's at 1521 * least for the same subdevice. By checking FD_OPEN here, we 1522 * can ensure that a device isn't attempted to be opened with 1523 * different densities at the same time where the second open 1524 * could clobber the settings from the first one. 1525 */ 1526 if (fd->flags & FD_OPEN) 1527 return (EBUSY); 1528 1529 if (flags & FNONBLOCK) { 1530 /* 1531 * Unfortunately, physio(9) discards its ioflag 1532 * argument, thus preventing us from seeing the 1533 * IO_NDELAY bit. So we need to keep track 1534 * ourselves. 1535 */ 1536 fd->flags |= FD_NONBLOCK; 1537 fd->ft = 0; 1538 } else { 1539 /* 1540 * Figure out a unit attention condition. 1541 * 1542 * If UA has been forced, proceed. 1543 * 1544 * If the drive has no changeline support, 1545 * or if the drive parameters have been lost 1546 * due to previous non-blocking access, 1547 * assume a forced UA condition. 1548 * 1549 * If motor is off, turn it on for a moment 1550 * and select our drive, in order to read the 1551 * UA hardware signal. 1552 * 1553 * If motor is on, and our drive is currently 1554 * selected, just read the hardware bit. 1555 * 1556 * If motor is on, but active for another 1557 * drive on that controller, we are lost. We 1558 * cannot risk to deselect the other drive, so 1559 * we just assume a forced UA condition to be 1560 * on the safe side. 1561 */ 1562 unitattn = 0; 1563 if ((dflags & FD_NO_CHLINE) != 0 || 1564 (fd->flags & FD_UA) != 0 || 1565 fd->ft == 0) { 1566 unitattn = 1; 1567 fd->flags &= ~FD_UA; 1568 } else if (fdc->fdout & (FDO_MOEN0 | FDO_MOEN1 | 1569 FDO_MOEN2 | FDO_MOEN3)) { 1570 if ((fdc->fdout & FDO_FDSEL) == fd->fdsu) 1571 unitattn = fdin_rd(fdc) & FDI_DCHG; 1572 else 1573 unitattn = 1; 1574 } else { 1575 set_motor(fdc, fd->fdsu, TURNON); 1576 unitattn = fdin_rd(fdc) & FDI_DCHG; 1577 set_motor(fdc, fd->fdsu, TURNOFF); 1578 } 1579 if (unitattn && (rv = fdautoselect(dev)) != 0) 1580 return (rv); 1581 } 1582 fd->flags |= FD_OPEN; 1583 /* 1584 * Clearing the DMA overrun counter at open time is a bit messy. 1585 * Since we're only managing one counter per controller, opening 1586 * the second drive could mess it up. Anyway, if the DMA overrun 1587 * condition is really persistent, it will eventually time out 1588 * still. OTOH, clearing it here will ensure we'll at least start 1589 * trying again after a previous (maybe even long ago) failure. 1590 * Also, this is merely a stop-gap measure only that should not 1591 * happen during normal operation, so we can tolerate it to be a 1592 * bit sloppy about this. 1593 */ 1594 fdc->dma_overruns = 0; 1595 1596 return 0; 1597 } 1598 1599 static int 1600 fdclose(dev_t dev, int flags, int mode, struct thread *td) 1601 { 1602 struct fd_data *fd; 1603 1604 fd = dev->si_drv1; 1605 fd->flags &= ~(FD_OPEN | FD_NONBLOCK); 1606 fd->options &= ~(FDOPT_NORETRY | FDOPT_NOERRLOG | FDOPT_NOERROR); 1607 1608 return (0); 1609 } 1610 1611 static void 1612 fdstrategy(struct bio *bp) 1613 { 1614 long blknum, nblocks; 1615 int s; 1616 fdu_t fdu; 1617 fdc_p fdc; 1618 fd_p fd; 1619 size_t fdblk; 1620 1621 fd = bp->bio_dev->si_drv1; 1622 fdu = fd->fdu; 1623 fdc = fd->fdc; 1624 bp->bio_resid = bp->bio_bcount; 1625 if (fd->type == FDT_NONE || fd->ft == 0) { 1626 if (fd->type != FDT_NONE && (fd->flags & FD_NONBLOCK)) 1627 bp->bio_error = EAGAIN; 1628 else 1629 bp->bio_error = ENXIO; 1630 bp->bio_flags |= BIO_ERROR; 1631 goto bad; 1632 } 1633 fdblk = 128 << (fd->ft->secsize); 1634 if (bp->bio_cmd != FDBIO_FORMAT && bp->bio_cmd != FDBIO_RDSECTID) { 1635 if (fd->flags & FD_NONBLOCK) { 1636 bp->bio_error = EAGAIN; 1637 bp->bio_flags |= BIO_ERROR; 1638 goto bad; 1639 } 1640 if (bp->bio_offset < 0) { 1641 printf( 1642 "fd%d: fdstrat: bad request offset = %ju, bcount = %ld\n", 1643 fdu, (intmax_t)bp->bio_offset, bp->bio_bcount); 1644 bp->bio_error = EINVAL; 1645 bp->bio_flags |= BIO_ERROR; 1646 goto bad; 1647 } 1648 if ((bp->bio_bcount % fdblk) != 0) { 1649 bp->bio_error = EINVAL; 1650 bp->bio_flags |= BIO_ERROR; 1651 goto bad; 1652 } 1653 } 1654 1655 /* 1656 * Set up block calculations. 1657 */ 1658 if (bp->bio_offset >= ((off_t)128 << fd->ft->secsize) * fd->ft->size) { 1659 bp->bio_error = EINVAL; 1660 bp->bio_flags |= BIO_ERROR; 1661 goto bad; 1662 } 1663 blknum = bp->bio_offset / fdblk; 1664 nblocks = fd->ft->size; 1665 if (blknum + bp->bio_bcount / fdblk > nblocks) { 1666 if (blknum >= nblocks) { 1667 if (bp->bio_cmd != BIO_READ) { 1668 bp->bio_error = ENOSPC; 1669 bp->bio_flags |= BIO_ERROR; 1670 } 1671 goto bad; /* not always bad, but EOF */ 1672 } 1673 bp->bio_bcount = (nblocks - blknum) * fdblk; 1674 } 1675 bp->bio_pblkno = blknum; 1676 s = splbio(); 1677 bioq_disksort(&fdc->head, bp); 1678 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */ 1679 devstat_start_transaction_bio(fd->device_stats, bp); 1680 device_busy(fd->dev); 1681 fdstart(fdc); 1682 splx(s); 1683 return; 1684 1685 bad: 1686 biodone(bp); 1687 } 1688 1689 /* 1690 * fdstart 1691 * 1692 * We have just queued something. If the controller is not busy 1693 * then simulate the case where it has just finished a command 1694 * So that it (the interrupt routine) looks on the queue for more 1695 * work to do and picks up what we just added. 1696 * 1697 * If the controller is already busy, we need do nothing, as it 1698 * will pick up our work when the present work completes. 1699 */ 1700 static void 1701 fdstart(struct fdc_data *fdc) 1702 { 1703 int s; 1704 1705 s = splbio(); 1706 if(fdc->state == DEVIDLE) 1707 { 1708 fdc_intr(fdc); 1709 } 1710 splx(s); 1711 } 1712 1713 static void 1714 fd_iotimeout(void *xfdc) 1715 { 1716 fdc_p fdc; 1717 int s; 1718 1719 fdc = xfdc; 1720 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); 1721 1722 /* 1723 * Due to IBM's brain-dead design, the FDC has a faked ready 1724 * signal, hardwired to ready == true. Thus, any command 1725 * issued if there's no diskette in the drive will _never_ 1726 * complete, and must be aborted by resetting the FDC. 1727 * Many thanks, Big Blue! 1728 * The FDC must not be reset directly, since that would 1729 * interfere with the state machine. Instead, pretend that 1730 * the command completed but was invalid. The state machine 1731 * will reset the FDC and retry once. 1732 */ 1733 s = splbio(); 1734 fdc->status[0] = NE7_ST0_IC_IV; 1735 fdc->flags &= ~FDC_STAT_VALID; 1736 fdc->state = IOTIMEDOUT; 1737 fdc_intr(fdc); 1738 splx(s); 1739 } 1740 1741 /* Just ensure it has the right spl. */ 1742 static void 1743 fd_pseudointr(void *xfdc) 1744 { 1745 int s; 1746 1747 s = splbio(); 1748 fdc_intr(xfdc); 1749 splx(s); 1750 } 1751 1752 /* 1753 * fdc_intr 1754 * 1755 * Keep calling the state machine until it returns a 0. 1756 * Always called at splbio. 1757 */ 1758 static void 1759 fdc_intr(void *xfdc) 1760 { 1761 fdc_p fdc = xfdc; 1762 while(fdstate(fdc)) 1763 ; 1764 } 1765 1766 /* 1767 * Magic pseudo-DMA initialization for YE FDC. Sets count and 1768 * direction. 1769 */ 1770 #define SET_BCDR(fdc,wr,cnt,port) \ 1771 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port, \ 1772 ((cnt)-1) & 0xff); \ 1773 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port + 1, \ 1774 ((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))); 1775 1776 /* 1777 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy. 1778 */ 1779 static int 1780 fdcpio(fdc_p fdc, long flags, caddr_t addr, u_int count) 1781 { 1782 u_char *cptr = (u_char *)addr; 1783 1784 if (flags == BIO_READ) { 1785 if (fdc->state != PIOREAD) { 1786 fdc->state = PIOREAD; 1787 return(0); 1788 } 1789 SET_BCDR(fdc, 0, count, 0); 1790 bus_space_read_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1791 FDC_YE_DATAPORT, cptr, count); 1792 } else { 1793 bus_space_write_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1794 FDC_YE_DATAPORT, cptr, count); 1795 SET_BCDR(fdc, 0, count, 0); 1796 } 1797 return(1); 1798 } 1799 1800 /* 1801 * Try figuring out the density of the media present in our device. 1802 */ 1803 static int 1804 fdautoselect(dev_t dev) 1805 { 1806 fd_p fd; 1807 struct fd_type *fdtp; 1808 struct fdc_readid id; 1809 int i, n, oopts, rv; 1810 1811 fd = dev->si_drv1; 1812 1813 switch (fd->type) { 1814 default: 1815 return (ENXIO); 1816 1817 case FDT_360K: 1818 case FDT_720K: 1819 /* no autoselection on those drives */ 1820 fd->ft = fd_native_types + fd->type; 1821 return (0); 1822 1823 case FDT_12M: 1824 fdtp = fd_searchlist_12m; 1825 n = sizeof fd_searchlist_12m / sizeof(struct fd_type); 1826 break; 1827 1828 case FDT_144M: 1829 fdtp = fd_searchlist_144m; 1830 n = sizeof fd_searchlist_144m / sizeof(struct fd_type); 1831 break; 1832 1833 case FDT_288M: 1834 fdtp = fd_searchlist_288m; 1835 n = sizeof fd_searchlist_288m / sizeof(struct fd_type); 1836 break; 1837 } 1838 1839 /* 1840 * Try reading sector ID fields, first at cylinder 0, head 0, 1841 * then at cylinder 2, head N. We don't probe cylinder 1, 1842 * since for 5.25in DD media in a HD drive, there are no data 1843 * to read (2 step pulses per media cylinder required). For 1844 * two-sided media, the second probe always goes to head 1, so 1845 * we can tell them apart from single-sided media. As a 1846 * side-effect this means that single-sided media should be 1847 * mentioned in the search list after two-sided media of an 1848 * otherwise identical density. Media with a different number 1849 * of sectors per track but otherwise identical parameters 1850 * cannot be distinguished at all. 1851 * 1852 * If we successfully read an ID field on both cylinders where 1853 * the recorded values match our expectation, we are done. 1854 * Otherwise, we try the next density entry from the table. 1855 * 1856 * Stepping to cylinder 2 has the side-effect of clearing the 1857 * unit attention bit. 1858 */ 1859 oopts = fd->options; 1860 fd->options |= FDOPT_NOERRLOG | FDOPT_NORETRY; 1861 for (i = 0; i < n; i++, fdtp++) { 1862 fd->ft = fdtp; 1863 1864 id.cyl = id.head = 0; 1865 rv = fdmisccmd(dev, FDBIO_RDSECTID, &id); 1866 if (rv != 0) 1867 continue; 1868 if (id.cyl != 0 || id.head != 0 || 1869 id.secshift != fdtp->secsize) 1870 continue; 1871 id.cyl = 2; 1872 id.head = fd->ft->heads - 1; 1873 rv = fdmisccmd(dev, FDBIO_RDSECTID, &id); 1874 if (id.cyl != 2 || id.head != fdtp->heads - 1 || 1875 id.secshift != fdtp->secsize) 1876 continue; 1877 if (rv == 0) 1878 break; 1879 } 1880 1881 fd->options = oopts; 1882 if (i == n) { 1883 if (bootverbose) 1884 device_printf(fd->dev, "autoselection failed\n"); 1885 fd->ft = 0; 1886 return (EIO); 1887 } else { 1888 if (bootverbose) 1889 device_printf(fd->dev, "autoselected %d KB medium\n", 1890 fd->ft->size / 2); 1891 return (0); 1892 } 1893 } 1894 1895 1896 /* 1897 * The controller state machine. 1898 * 1899 * If it returns a non zero value, it should be called again immediately. 1900 */ 1901 static int 1902 fdstate(fdc_p fdc) 1903 { 1904 struct fdc_readid *idp; 1905 int read, format, rdsectid, cylinder, head, i, sec = 0, sectrac; 1906 int st0, cyl, st3, idf, ne7cmd, mfm, steptrac; 1907 unsigned long blknum; 1908 fdu_t fdu = fdc->fdu; 1909 fd_p fd; 1910 register struct bio *bp; 1911 struct fd_formb *finfo = NULL; 1912 size_t fdblk; 1913 1914 bp = fdc->bp; 1915 if (bp == NULL) { 1916 bp = bioq_first(&fdc->head); 1917 if (bp != NULL) { 1918 bioq_remove(&fdc->head, bp); 1919 fdc->bp = bp; 1920 } 1921 } 1922 if (bp == NULL) { 1923 /* 1924 * Nothing left for this controller to do, 1925 * force into the IDLE state. 1926 */ 1927 fdc->state = DEVIDLE; 1928 if (fdc->fd) { 1929 device_printf(fdc->fdc_dev, 1930 "unexpected valid fd pointer\n"); 1931 fdc->fd = (fd_p) 0; 1932 fdc->fdu = -1; 1933 } 1934 TRACE1("[fdc%d IDLE]", fdc->fdcu); 1935 return (0); 1936 } 1937 fd = bp->bio_dev->si_drv1; 1938 fdu = fd->fdu; 1939 fdblk = 128 << fd->ft->secsize; 1940 if (fdc->fd && (fd != fdc->fd)) 1941 device_printf(fd->dev, "confused fd pointers\n"); 1942 read = bp->bio_cmd == BIO_READ; 1943 mfm = (fd->ft->flags & FL_MFM)? NE7CMD_MFM: 0; 1944 steptrac = (fd->ft->flags & FL_2STEP)? 2: 1; 1945 if (read) 1946 idf = ISADMA_READ; 1947 else 1948 idf = ISADMA_WRITE; 1949 format = bp->bio_cmd == FDBIO_FORMAT; 1950 rdsectid = bp->bio_cmd == FDBIO_RDSECTID; 1951 if (format) 1952 finfo = (struct fd_formb *)bp->bio_data; 1953 TRACE1("fd%d", fdu); 1954 TRACE1("[%s]", fdstates[fdc->state]); 1955 TRACE1("(0x%x)", fd->flags); 1956 untimeout(fd_turnoff, fd, fd->toffhandle); 1957 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 1958 switch (fdc->state) 1959 { 1960 case DEVIDLE: 1961 case FINDWORK: /* we have found new work */ 1962 fdc->retry = 0; 1963 fd->skip = 0; 1964 fdc->fd = fd; 1965 fdc->fdu = fdu; 1966 fdc->fdctl_wr(fdc, fd->ft->trans); 1967 TRACE1("[0x%x->FDCTL]", fd->ft->trans); 1968 /* 1969 * If the next drive has a motor startup pending, then 1970 * it will start up in its own good time. 1971 */ 1972 if(fd->flags & FD_MOTOR_WAIT) { 1973 fdc->state = MOTORWAIT; 1974 return (0); /* will return later */ 1975 } 1976 /* 1977 * Maybe if it's not starting, it SHOULD be starting. 1978 */ 1979 if (!(fd->flags & FD_MOTOR)) 1980 { 1981 fdc->state = MOTORWAIT; 1982 fd_turnon(fd); 1983 return (0); /* will return later */ 1984 } 1985 else /* at least make sure we are selected */ 1986 { 1987 set_motor(fdc, fd->fdsu, TURNON); 1988 } 1989 if (fdc->flags & FDC_NEEDS_RESET) { 1990 fdc->state = RESETCTLR; 1991 fdc->flags &= ~FDC_NEEDS_RESET; 1992 } else 1993 fdc->state = DOSEEK; 1994 return (1); /* will return immediately */ 1995 1996 case DOSEEK: 1997 blknum = bp->bio_pblkno + fd->skip / fdblk; 1998 cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 1999 if (cylinder == fd->track) 2000 { 2001 fdc->state = SEEKCOMPLETE; 2002 return (1); /* will return immediately */ 2003 } 2004 if (fd_cmd(fdc, 3, NE7CMD_SEEK, 2005 fd->fdsu, cylinder * steptrac, 0)) 2006 { 2007 /* 2008 * Seek command not accepted, looks like 2009 * the FDC went off to the Saints... 2010 */ 2011 fdc->retry = 6; /* try a reset */ 2012 return(retrier(fdc)); 2013 } 2014 fd->track = FD_NO_TRACK; 2015 fdc->state = SEEKWAIT; 2016 return(0); /* will return later */ 2017 2018 case SEEKWAIT: 2019 /* allow heads to settle */ 2020 timeout(fd_pseudointr, fdc, hz / 16); 2021 fdc->state = SEEKCOMPLETE; 2022 return(0); /* will return later */ 2023 2024 case SEEKCOMPLETE : /* seek done, start DMA */ 2025 blknum = bp->bio_pblkno + fd->skip / fdblk; 2026 cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 2027 2028 /* Make sure seek really happened. */ 2029 if(fd->track == FD_NO_TRACK) { 2030 int descyl = cylinder * steptrac; 2031 do { 2032 /* 2033 * This might be a "ready changed" interrupt, 2034 * which cannot really happen since the 2035 * RDY pin is hardwired to + 5 volts. This 2036 * generally indicates a "bouncing" intr 2037 * line, so do one of the following: 2038 * 2039 * When running on an enhanced FDC that is 2040 * known to not go stuck after responding 2041 * with INVALID, fetch all interrupt states 2042 * until seeing either an INVALID or a 2043 * real interrupt condition. 2044 * 2045 * When running on a dumb old NE765, give 2046 * up immediately. The controller will 2047 * provide up to four dummy RC interrupt 2048 * conditions right after reset (for the 2049 * corresponding four drives), so this is 2050 * our only chance to get notice that it 2051 * was not the FDC that caused the interrupt. 2052 */ 2053 if (fd_sense_int(fdc, &st0, &cyl) 2054 == FD_NOT_VALID) 2055 return (0); /* will return later */ 2056 if(fdc->fdct == FDC_NE765 2057 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 2058 return (0); /* hope for a real intr */ 2059 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 2060 2061 if (0 == descyl) { 2062 int failed = 0; 2063 /* 2064 * seek to cyl 0 requested; make sure we are 2065 * really there 2066 */ 2067 if (fd_sense_drive_status(fdc, &st3)) 2068 failed = 1; 2069 if ((st3 & NE7_ST3_T0) == 0) { 2070 printf( 2071 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", 2072 fdu, st3, NE7_ST3BITS); 2073 failed = 1; 2074 } 2075 2076 if (failed) { 2077 if(fdc->retry < 3) 2078 fdc->retry = 3; 2079 return (retrier(fdc)); 2080 } 2081 } 2082 2083 if (cyl != descyl) { 2084 printf( 2085 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", 2086 fdu, descyl, cyl, st0); 2087 if (fdc->retry < 3) 2088 fdc->retry = 3; 2089 return (retrier(fdc)); 2090 } 2091 } 2092 2093 fd->track = cylinder; 2094 if (format) 2095 fd->skip = (char *)&(finfo->fd_formb_cylno(0)) 2096 - (char *)finfo; 2097 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 2098 isa_dmastart(idf, bp->bio_data+fd->skip, 2099 format ? bp->bio_bcount : fdblk, fdc->dmachan); 2100 blknum = bp->bio_pblkno + fd->skip / fdblk; 2101 sectrac = fd->ft->sectrac; 2102 sec = blknum % (sectrac * fd->ft->heads); 2103 head = sec / sectrac; 2104 sec = sec % sectrac + 1; 2105 if (head != 0 && fd->ft->offset_side2 != 0) 2106 sec += fd->ft->offset_side2; 2107 fd->hddrv = ((head&1)<<2)+fdu; 2108 2109 if(format || !(read || rdsectid)) 2110 { 2111 /* make sure the drive is writable */ 2112 if(fd_sense_drive_status(fdc, &st3) != 0) 2113 { 2114 /* stuck controller? */ 2115 if (!(fdc->flags & FDC_NODMA)) 2116 isa_dmadone(idf, 2117 bp->bio_data + fd->skip, 2118 format ? bp->bio_bcount : fdblk, 2119 fdc->dmachan); 2120 fdc->retry = 6; /* reset the beast */ 2121 return (retrier(fdc)); 2122 } 2123 if(st3 & NE7_ST3_WP) 2124 { 2125 /* 2126 * XXX YES! this is ugly. 2127 * in order to force the current operation 2128 * to fail, we will have to fake an FDC 2129 * error - all error handling is done 2130 * by the retrier() 2131 */ 2132 fdc->status[0] = NE7_ST0_IC_AT; 2133 fdc->status[1] = NE7_ST1_NW; 2134 fdc->status[2] = 0; 2135 fdc->status[3] = fd->track; 2136 fdc->status[4] = head; 2137 fdc->status[5] = sec; 2138 fdc->retry = 8; /* break out immediately */ 2139 fdc->state = IOTIMEDOUT; /* not really... */ 2140 return (1); /* will return immediately */ 2141 } 2142 } 2143 2144 if (format) { 2145 ne7cmd = NE7CMD_FORMAT | mfm; 2146 if (fdc->flags & FDC_NODMA) { 2147 /* 2148 * This seems to be necessary for 2149 * whatever obscure reason; if we omit 2150 * it, we end up filling the sector ID 2151 * fields of the newly formatted track 2152 * entirely with garbage, causing 2153 * `wrong cylinder' errors all over 2154 * the place when trying to read them 2155 * back. 2156 * 2157 * Umpf. 2158 */ 2159 SET_BCDR(fdc, 1, bp->bio_bcount, 0); 2160 2161 (void)fdcpio(fdc,bp->bio_cmd, 2162 bp->bio_data+fd->skip, 2163 bp->bio_bcount); 2164 2165 } 2166 /* formatting */ 2167 if(fd_cmd(fdc, 6, ne7cmd, head << 2 | fdu, 2168 finfo->fd_formb_secshift, 2169 finfo->fd_formb_nsecs, 2170 finfo->fd_formb_gaplen, 2171 finfo->fd_formb_fillbyte, 0)) { 2172 /* controller fell over */ 2173 if (!(fdc->flags & FDC_NODMA)) 2174 isa_dmadone(idf, 2175 bp->bio_data + fd->skip, 2176 format ? bp->bio_bcount : fdblk, 2177 fdc->dmachan); 2178 fdc->retry = 6; 2179 return (retrier(fdc)); 2180 } 2181 } else if (rdsectid) { 2182 ne7cmd = NE7CMD_READID | mfm; 2183 if (fd_cmd(fdc, 2, ne7cmd, head << 2 | fdu, 0)) { 2184 /* controller jamming */ 2185 fdc->retry = 6; 2186 return (retrier(fdc)); 2187 } 2188 } else { 2189 /* read or write operation */ 2190 ne7cmd = (read ? NE7CMD_READ | NE7CMD_SK : NE7CMD_WRITE) | mfm; 2191 if (fdc->flags & FDC_NODMA) { 2192 /* 2193 * This seems to be necessary even when 2194 * reading data. 2195 */ 2196 SET_BCDR(fdc, 1, fdblk, 0); 2197 2198 /* 2199 * Perform the write pseudo-DMA before 2200 * the WRITE command is sent. 2201 */ 2202 if (!read) 2203 (void)fdcpio(fdc,bp->bio_cmd, 2204 bp->bio_data+fd->skip, 2205 fdblk); 2206 } 2207 if (fd_cmd(fdc, 9, 2208 ne7cmd, 2209 head << 2 | fdu, /* head & unit */ 2210 fd->track, /* track */ 2211 head, 2212 sec, /* sector + 1 */ 2213 fd->ft->secsize, /* sector size */ 2214 sectrac, /* sectors/track */ 2215 fd->ft->gap, /* gap size */ 2216 fd->ft->datalen, /* data length */ 2217 0)) { 2218 /* the beast is sleeping again */ 2219 if (!(fdc->flags & FDC_NODMA)) 2220 isa_dmadone(idf, 2221 bp->bio_data + fd->skip, 2222 format ? bp->bio_bcount : fdblk, 2223 fdc->dmachan); 2224 fdc->retry = 6; 2225 return (retrier(fdc)); 2226 } 2227 } 2228 if (!rdsectid && (fdc->flags & FDC_NODMA)) 2229 /* 2230 * If this is a read, then simply await interrupt 2231 * before performing PIO. 2232 */ 2233 if (read && !fdcpio(fdc,bp->bio_cmd, 2234 bp->bio_data+fd->skip,fdblk)) { 2235 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 2236 return(0); /* will return later */ 2237 } 2238 2239 /* 2240 * Write (or format) operation will fall through and 2241 * await completion interrupt. 2242 */ 2243 fdc->state = IOCOMPLETE; 2244 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 2245 return (0); /* will return later */ 2246 2247 case PIOREAD: 2248 /* 2249 * Actually perform the PIO read. The IOCOMPLETE case 2250 * removes the timeout for us. 2251 */ 2252 (void)fdcpio(fdc,bp->bio_cmd,bp->bio_data+fd->skip,fdblk); 2253 fdc->state = IOCOMPLETE; 2254 /* FALLTHROUGH */ 2255 case IOCOMPLETE: /* IO done, post-analyze */ 2256 untimeout(fd_iotimeout, fdc, fd->tohandle); 2257 2258 if (fd_read_status(fdc)) { 2259 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 2260 isa_dmadone(idf, bp->bio_data + fd->skip, 2261 format ? bp->bio_bcount : fdblk, 2262 fdc->dmachan); 2263 if (fdc->retry < 6) 2264 fdc->retry = 6; /* force a reset */ 2265 return (retrier(fdc)); 2266 } 2267 2268 fdc->state = IOTIMEDOUT; 2269 2270 /* FALLTHROUGH */ 2271 case IOTIMEDOUT: 2272 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 2273 isa_dmadone(idf, bp->bio_data + fd->skip, 2274 format ? bp->bio_bcount : fdblk, fdc->dmachan); 2275 if (fdc->status[0] & NE7_ST0_IC) { 2276 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2277 && fdc->status[1] & NE7_ST1_OR) { 2278 /* 2279 * DMA overrun. Someone hogged the bus and 2280 * didn't release it in time for the next 2281 * FDC transfer. 2282 * 2283 * We normally restart this without bumping 2284 * the retry counter. However, in case 2285 * something is seriously messed up (like 2286 * broken hardware), we rather limit the 2287 * number of retries so the IO operation 2288 * doesn't block indefinately. 2289 */ 2290 if (fdc->dma_overruns++ < FDC_DMAOV_MAX) { 2291 fdc->state = SEEKCOMPLETE; 2292 return (1);/* will return immediately */ 2293 } /* else fall through */ 2294 } 2295 if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV 2296 && fdc->retry < 6) 2297 fdc->retry = 6; /* force a reset */ 2298 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2299 && fdc->status[2] & NE7_ST2_WC 2300 && fdc->retry < 3) 2301 fdc->retry = 3; /* force recalibrate */ 2302 return (retrier(fdc)); 2303 } 2304 /* All OK */ 2305 if (rdsectid) { 2306 /* copy out ID field contents */ 2307 idp = (struct fdc_readid *)bp->bio_data; 2308 idp->cyl = fdc->status[3]; 2309 idp->head = fdc->status[4]; 2310 idp->sec = fdc->status[5]; 2311 idp->secshift = fdc->status[6]; 2312 } 2313 /* Operation successful, retry DMA overruns again next time. */ 2314 fdc->dma_overruns = 0; 2315 fd->skip += fdblk; 2316 if (!rdsectid && !format && fd->skip < bp->bio_bcount) { 2317 /* set up next transfer */ 2318 fdc->state = DOSEEK; 2319 } else { 2320 /* ALL DONE */ 2321 fd->skip = 0; 2322 bp->bio_resid = 0; 2323 fdc->bp = NULL; 2324 device_unbusy(fd->dev); 2325 biofinish(bp, fd->device_stats, 0); 2326 fdc->fd = (fd_p) 0; 2327 fdc->fdu = -1; 2328 fdc->state = FINDWORK; 2329 } 2330 return (1); /* will return immediately */ 2331 2332 case RESETCTLR: 2333 fdc_reset(fdc); 2334 fdc->retry++; 2335 fdc->state = RESETCOMPLETE; 2336 return (0); /* will return later */ 2337 2338 case RESETCOMPLETE: 2339 /* 2340 * Discard all the results from the reset so that they 2341 * can't cause an unexpected interrupt later. 2342 */ 2343 for (i = 0; i < 4; i++) 2344 (void)fd_sense_int(fdc, &st0, &cyl); 2345 fdc->state = STARTRECAL; 2346 /* FALLTHROUGH */ 2347 case STARTRECAL: 2348 if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) { 2349 /* arrgl */ 2350 fdc->retry = 6; 2351 return (retrier(fdc)); 2352 } 2353 fdc->state = RECALWAIT; 2354 return (0); /* will return later */ 2355 2356 case RECALWAIT: 2357 /* allow heads to settle */ 2358 timeout(fd_pseudointr, fdc, hz / 8); 2359 fdc->state = RECALCOMPLETE; 2360 return (0); /* will return later */ 2361 2362 case RECALCOMPLETE: 2363 do { 2364 /* 2365 * See SEEKCOMPLETE for a comment on this: 2366 */ 2367 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 2368 return (0); /* will return later */ 2369 if(fdc->fdct == FDC_NE765 2370 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 2371 return (0); /* hope for a real intr */ 2372 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 2373 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0) 2374 { 2375 if(fdc->retry > 3) 2376 /* 2377 * A recalibrate from beyond cylinder 77 2378 * will "fail" due to the FDC limitations; 2379 * since people used to complain much about 2380 * the failure message, try not logging 2381 * this one if it seems to be the first 2382 * time in a line. 2383 */ 2384 printf("fd%d: recal failed ST0 %b cyl %d\n", 2385 fdu, st0, NE7_ST0BITS, cyl); 2386 if(fdc->retry < 3) fdc->retry = 3; 2387 return (retrier(fdc)); 2388 } 2389 fd->track = 0; 2390 /* Seek (probably) necessary */ 2391 fdc->state = DOSEEK; 2392 return (1); /* will return immediately */ 2393 2394 case MOTORWAIT: 2395 if(fd->flags & FD_MOTOR_WAIT) 2396 { 2397 return (0); /* time's not up yet */ 2398 } 2399 if (fdc->flags & FDC_NEEDS_RESET) { 2400 fdc->state = RESETCTLR; 2401 fdc->flags &= ~FDC_NEEDS_RESET; 2402 } else 2403 fdc->state = DOSEEK; 2404 return (1); /* will return immediately */ 2405 2406 default: 2407 device_printf(fdc->fdc_dev, "unexpected FD int->"); 2408 if (fd_read_status(fdc) == 0) 2409 printf("FDC status :%x %x %x %x %x %x %x ", 2410 fdc->status[0], 2411 fdc->status[1], 2412 fdc->status[2], 2413 fdc->status[3], 2414 fdc->status[4], 2415 fdc->status[5], 2416 fdc->status[6] ); 2417 else 2418 printf("No status available "); 2419 if (fd_sense_int(fdc, &st0, &cyl) != 0) 2420 { 2421 printf("[controller is dead now]\n"); 2422 return (0); /* will return later */ 2423 } 2424 printf("ST0 = %x, PCN = %x\n", st0, cyl); 2425 return (0); /* will return later */ 2426 } 2427 /* noone should ever get here */ 2428 } 2429 2430 static int 2431 retrier(struct fdc_data *fdc) 2432 { 2433 struct bio *bp; 2434 struct fd_data *fd; 2435 int fdu; 2436 2437 bp = fdc->bp; 2438 2439 /* XXX shouldn't this be cached somewhere? */ 2440 fd = bp->bio_dev->si_drv1; 2441 fdu = fd->fdu; 2442 if (fd->options & FDOPT_NORETRY) 2443 goto fail; 2444 2445 switch (fdc->retry) { 2446 case 0: case 1: case 2: 2447 fdc->state = SEEKCOMPLETE; 2448 break; 2449 case 3: case 4: case 5: 2450 fdc->state = STARTRECAL; 2451 break; 2452 case 6: 2453 fdc->state = RESETCTLR; 2454 break; 2455 case 7: 2456 break; 2457 default: 2458 fail: 2459 if ((fd->options & FDOPT_NOERRLOG) == 0) { 2460 disk_err(bp, "hard error", 2461 fdc->fd->skip / DEV_BSIZE, 0); 2462 if (fdc->flags & FDC_STAT_VALID) { 2463 printf( 2464 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n", 2465 fdc->status[0], NE7_ST0BITS, 2466 fdc->status[1], NE7_ST1BITS, 2467 fdc->status[2], NE7_ST2BITS, 2468 fdc->status[3], fdc->status[4], 2469 fdc->status[5]); 2470 } 2471 else 2472 printf(" (No status)\n"); 2473 } 2474 if ((fd->options & FDOPT_NOERROR) == 0) { 2475 bp->bio_flags |= BIO_ERROR; 2476 bp->bio_error = EIO; 2477 bp->bio_resid = bp->bio_bcount - fdc->fd->skip; 2478 } else 2479 bp->bio_resid = 0; 2480 fdc->bp = NULL; 2481 fdc->fd->skip = 0; 2482 device_unbusy(fd->dev); 2483 biofinish(bp, fdc->fd->device_stats, 0); 2484 fdc->state = FINDWORK; 2485 fdc->flags |= FDC_NEEDS_RESET; 2486 fdc->fd = (fd_p) 0; 2487 fdc->fdu = -1; 2488 return (1); 2489 } 2490 fdc->retry++; 2491 return (1); 2492 } 2493 2494 static void 2495 fdbiodone(struct bio *bp) 2496 { 2497 wakeup(bp); 2498 } 2499 2500 static int 2501 fdmisccmd(dev_t dev, u_int cmd, void *data) 2502 { 2503 fdu_t fdu; 2504 fd_p fd; 2505 struct bio *bp; 2506 struct fd_formb *finfo; 2507 struct fdc_readid *idfield; 2508 size_t fdblk; 2509 int error; 2510 2511 fd = dev->si_drv1; 2512 fdu = fd->fdu; 2513 fdblk = 128 << fd->ft->secsize; 2514 finfo = (struct fd_formb *)data; 2515 idfield = (struct fdc_readid *)data; 2516 2517 bp = malloc(sizeof(struct bio), M_TEMP, M_WAITOK | M_ZERO); 2518 2519 /* 2520 * Set up a bio request for fdstrategy(). bio_offset is faked 2521 * so that fdstrategy() will seek to the the requested 2522 * cylinder, and use the desired head. 2523 */ 2524 bp->bio_cmd = cmd; 2525 if (cmd == FDBIO_FORMAT) { 2526 bp->bio_offset = 2527 (finfo->cyl * (fd->ft->sectrac * fd->ft->heads) + 2528 finfo->head * fd->ft->sectrac) * fdblk; 2529 bp->bio_bcount = sizeof(struct fd_idfield_data) * 2530 finfo->fd_formb_nsecs; 2531 } else if (cmd == FDBIO_RDSECTID) { 2532 bp->bio_offset = 2533 (idfield->cyl * (fd->ft->sectrac * fd->ft->heads) + 2534 idfield->head * fd->ft->sectrac) * fdblk; 2535 bp->bio_bcount = sizeof(struct fdc_readid); 2536 } else 2537 panic("wrong cmd in fdmisccmd()"); 2538 bp->bio_data = data; 2539 bp->bio_dev = dev; 2540 bp->bio_done = fdbiodone; 2541 bp->bio_flags = 0; 2542 2543 /* Now run the command. */ 2544 fdstrategy(bp); 2545 error = biowait(bp, "fdcmd"); 2546 2547 free(bp, M_TEMP); 2548 return (error); 2549 } 2550 2551 static int 2552 fdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct thread *td) 2553 { 2554 fdu_t fdu; 2555 fd_p fd; 2556 struct fdc_status *fsp; 2557 struct fdc_readid *rid; 2558 int error; 2559 2560 fd = dev->si_drv1; 2561 fdu = fd->fdu; 2562 2563 /* 2564 * First, handle everything that could be done with 2565 * FD_NONBLOCK still being set. 2566 */ 2567 switch (cmd) { 2568 2569 case DIOCGMEDIASIZE: 2570 if (fd->ft == 0) 2571 return ((fd->flags & FD_NONBLOCK) ? EAGAIN : ENXIO); 2572 *(off_t *)addr = (128 << (fd->ft->secsize)) * fd->ft->size; 2573 return (0); 2574 2575 case DIOCGSECTORSIZE: 2576 if (fd->ft == 0) 2577 return ((fd->flags & FD_NONBLOCK) ? EAGAIN : ENXIO); 2578 *(u_int *)addr = 128 << (fd->ft->secsize); 2579 return (0); 2580 2581 case FIONBIO: 2582 if (*(int *)addr != 0) 2583 fd->flags |= FD_NONBLOCK; 2584 else { 2585 if (fd->ft == 0) { 2586 /* 2587 * No drive type has been selected yet, 2588 * cannot turn FNONBLOCK off. 2589 */ 2590 return (EINVAL); 2591 } 2592 fd->flags &= ~FD_NONBLOCK; 2593 } 2594 return (0); 2595 2596 case FIOASYNC: 2597 /* keep the generic fcntl() code happy */ 2598 return (0); 2599 2600 case FD_GTYPE: /* get drive type */ 2601 if (fd->ft == 0) 2602 /* no type known yet, return the native type */ 2603 *(struct fd_type *)addr = fd_native_types[fd->type]; 2604 else 2605 *(struct fd_type *)addr = *fd->ft; 2606 return (0); 2607 2608 case FD_STYPE: /* set drive type */ 2609 if (suser(td) != 0) 2610 return (EPERM); 2611 fd->fts[0] = *(struct fd_type *)addr; 2612 return (0); 2613 2614 case FD_GOPTS: /* get drive options */ 2615 *(int *)addr = fd->options + FDOPT_AUTOSEL; 2616 return (0); 2617 2618 case FD_SOPTS: /* set drive options */ 2619 fd->options = *(int *)addr & ~FDOPT_AUTOSEL; 2620 return (0); 2621 2622 #ifdef FDC_DEBUG 2623 case FD_DEBUG: 2624 if ((fd_debug != 0) != (*(int *)addr != 0)) { 2625 fd_debug = (*(int *)addr != 0); 2626 printf("fd%d: debugging turned %s\n", 2627 fd->fdu, fd_debug ? "on" : "off"); 2628 } 2629 return (0); 2630 #endif 2631 2632 case FD_CLRERR: 2633 if (suser(td) != 0) 2634 return (EPERM); 2635 fd->fdc->fdc_errs = 0; 2636 return (0); 2637 2638 case FD_GSTAT: 2639 fsp = (struct fdc_status *)addr; 2640 if ((fd->fdc->flags & FDC_STAT_VALID) == 0) 2641 return (EINVAL); 2642 memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); 2643 return (0); 2644 2645 case FD_GDTYPE: 2646 *(enum fd_drivetype *)addr = fd->type; 2647 return (0); 2648 } 2649 2650 /* 2651 * Now handle everything else. Make sure we have a valid 2652 * drive type. 2653 */ 2654 if (fd->flags & FD_NONBLOCK) 2655 return (EAGAIN); 2656 if (fd->ft == 0) 2657 return (ENXIO); 2658 error = 0; 2659 2660 switch (cmd) { 2661 2662 case FD_FORM: 2663 if ((flag & FWRITE) == 0) 2664 return (EBADF); /* must be opened for writing */ 2665 if (((struct fd_formb *)addr)->format_version != 2666 FD_FORMAT_VERSION) 2667 return (EINVAL); /* wrong version of formatting prog */ 2668 error = fdmisccmd(dev, FDBIO_FORMAT, addr); 2669 break; 2670 2671 case FD_GTYPE: /* get drive type */ 2672 *(struct fd_type *)addr = *fd->ft; 2673 break; 2674 2675 case FD_STYPE: /* set drive type */ 2676 /* this is considered harmful; only allow for superuser */ 2677 if (suser(td) != 0) 2678 return (EPERM); 2679 *fd->ft = *(struct fd_type *)addr; 2680 break; 2681 2682 case FD_GOPTS: /* get drive options */ 2683 *(int *)addr = fd->options; 2684 break; 2685 2686 case FD_SOPTS: /* set drive options */ 2687 fd->options = *(int *)addr; 2688 break; 2689 2690 #ifdef FDC_DEBUG 2691 case FD_DEBUG: 2692 if ((fd_debug != 0) != (*(int *)addr != 0)) { 2693 fd_debug = (*(int *)addr != 0); 2694 printf("fd%d: debugging turned %s\n", 2695 fd->fdu, fd_debug ? "on" : "off"); 2696 } 2697 break; 2698 #endif 2699 2700 case FD_CLRERR: 2701 if (suser(td) != 0) 2702 return (EPERM); 2703 fd->fdc->fdc_errs = 0; 2704 break; 2705 2706 case FD_GSTAT: 2707 fsp = (struct fdc_status *)addr; 2708 if ((fd->fdc->flags & FDC_STAT_VALID) == 0) 2709 return (EINVAL); 2710 memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); 2711 break; 2712 2713 case FD_READID: 2714 rid = (struct fdc_readid *)addr; 2715 if (rid->cyl > MAX_CYLINDER || rid->head > MAX_HEAD) 2716 return (EINVAL); 2717 error = fdmisccmd(dev, FDBIO_RDSECTID, addr); 2718 break; 2719 2720 default: 2721 error = ENOTTY; 2722 break; 2723 } 2724 return (error); 2725 } 2726