1 /*- 2 * Copyright (c) 2004 Poul-Henning Kamp 3 * Copyright (c) 1990 The Regents of the University of California. 4 * All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Don Ahn. 8 * 9 * Libretto PCMCIA floppy support by David Horwitt (dhorwitt@ucsd.edu) 10 * aided by the Linux floppy driver modifications from David Bateman 11 * (dbateman@eng.uts.edu.au). 12 * 13 * Copyright (c) 1993, 1994 by 14 * jc@irbs.UUCP (John Capo) 15 * vak@zebub.msk.su (Serge Vakulenko) 16 * ache@astral.msk.su (Andrew A. Chernov) 17 * 18 * Copyright (c) 1993, 1994, 1995 by 19 * joerg_wunsch@uriah.sax.de (Joerg Wunsch) 20 * dufault@hda.com (Peter Dufault) 21 * 22 * Copyright (c) 2001 Joerg Wunsch, 23 * joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) 24 * 25 * Redistribution and use in source and binary forms, with or without 26 * modification, are permitted provided that the following conditions 27 * are met: 28 * 1. Redistributions of source code must retain the above copyright 29 * notice, this list of conditions and the following disclaimer. 30 * 2. Redistributions in binary form must reproduce the above copyright 31 * notice, this list of conditions and the following disclaimer in the 32 * documentation and/or other materials provided with the distribution. 33 * 4. Neither the name of the University nor the names of its contributors 34 * may be used to endorse or promote products derived from this software 35 * without specific prior written permission. 36 * 37 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 38 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 39 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 40 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 41 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 42 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 43 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 45 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 46 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 47 * SUCH DAMAGE. 48 * 49 * from: @(#)fd.c 7.4 (Berkeley) 5/25/91 50 * 51 */ 52 53 #include <sys/cdefs.h> 54 __FBSDID("$FreeBSD$"); 55 56 #include "opt_fdc.h" 57 58 #include <sys/param.h> 59 #include <sys/bio.h> 60 #include <sys/bus.h> 61 #include <sys/devicestat.h> 62 #include <sys/disk.h> 63 #include <sys/fcntl.h> 64 #include <sys/fdcio.h> 65 #include <sys/filio.h> 66 #include <sys/kernel.h> 67 #include <sys/kthread.h> 68 #include <sys/lock.h> 69 #include <sys/malloc.h> 70 #include <sys/module.h> 71 #include <sys/mutex.h> 72 #include <sys/priv.h> 73 #include <sys/proc.h> 74 #include <sys/rman.h> 75 #include <sys/sysctl.h> 76 #include <sys/systm.h> 77 78 #include <geom/geom.h> 79 80 #include <machine/bus.h> 81 #include <machine/clock.h> 82 #include <machine/stdarg.h> 83 84 #include <isa/isavar.h> 85 #include <isa/isareg.h> 86 #include <dev/fdc/fdcvar.h> 87 #include <isa/rtc.h> 88 89 #include <dev/ic/nec765.h> 90 91 /* 92 * Runtime configuration hints/flags 93 */ 94 95 /* configuration flags for fd */ 96 #define FD_TYPEMASK 0x0f /* drive type, matches enum 97 * fd_drivetype; on i386 machines, if 98 * given as 0, use RTC type for fd0 99 * and fd1 */ 100 #define FD_NO_CHLINE 0x10 /* drive does not support changeline 101 * aka. unit attention */ 102 #define FD_NO_PROBE 0x20 /* don't probe drive (seek test), just 103 * assume it is there */ 104 105 /* 106 * Things that could conceiveably considered parameters or tweakables 107 */ 108 109 /* 110 * Maximal number of bytes in a cylinder. 111 * This is used for ISADMA bouncebuffer allocation and sets the max 112 * xfersize we support. 113 * 114 * 2.88M format has 2 x 36 x 512, allow for hacked up density. 115 */ 116 #define MAX_BYTES_PER_CYL (2 * 40 * 512) 117 118 /* 119 * Timeout value for the PIO loops to wait until the FDC main status 120 * register matches our expectations (request for master, direction 121 * bit). This is supposed to be a number of microseconds, although 122 * timing might actually not be very accurate. 123 * 124 * Timeouts of 100 msec are believed to be required for some broken 125 * (old) hardware. 126 */ 127 #define FDSTS_TIMEOUT 100000 128 129 /* 130 * After this many errors, stop whining. Close will reset this count. 131 */ 132 #define FDC_ERRMAX 100 133 134 /* 135 * AutoDensity search lists for each drive type. 136 */ 137 138 static struct fd_type fd_searchlist_360k[] = { 139 { FDF_5_360 }, 140 { 0 } 141 }; 142 143 static struct fd_type fd_searchlist_12m[] = { 144 { FDF_5_1200 | FL_AUTO }, 145 { FDF_5_360 | FL_2STEP | FL_AUTO}, 146 { 0 } 147 }; 148 149 static struct fd_type fd_searchlist_720k[] = { 150 { FDF_3_720 }, 151 { 0 } 152 }; 153 154 static struct fd_type fd_searchlist_144m[] = { 155 { FDF_3_1440 | FL_AUTO}, 156 { FDF_3_720 | FL_AUTO}, 157 { 0 } 158 }; 159 160 static struct fd_type fd_searchlist_288m[] = { 161 { FDF_3_1440 | FL_AUTO }, 162 #if 0 163 { FDF_3_2880 | FL_AUTO }, /* XXX: probably doesn't work */ 164 #endif 165 { FDF_3_720 | FL_AUTO}, 166 { 0 } 167 }; 168 169 /* 170 * Order must match enum fd_drivetype in <sys/fdcio.h>. 171 */ 172 static struct fd_type *fd_native_types[] = { 173 NULL, /* FDT_NONE */ 174 fd_searchlist_360k, /* FDT_360K */ 175 fd_searchlist_12m, /* FDT_12M */ 176 fd_searchlist_720k, /* FDT_720K */ 177 fd_searchlist_144m, /* FDT_144M */ 178 fd_searchlist_288m, /* FDT_288M_1 (mapped to FDT_288M) */ 179 fd_searchlist_288m, /* FDT_288M */ 180 }; 181 182 /* 183 * Internals start here 184 */ 185 186 /* registers */ 187 #define FDOUT 2 /* Digital Output Register (W) */ 188 #define FDO_FDSEL 0x03 /* floppy device select */ 189 #define FDO_FRST 0x04 /* floppy controller reset */ 190 #define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */ 191 #define FDO_MOEN0 0x10 /* motor enable drive 0 */ 192 #define FDO_MOEN1 0x20 /* motor enable drive 1 */ 193 #define FDO_MOEN2 0x40 /* motor enable drive 2 */ 194 #define FDO_MOEN3 0x80 /* motor enable drive 3 */ 195 196 #define FDSTS 4 /* NEC 765 Main Status Register (R) */ 197 #define FDDSR 4 /* Data Rate Select Register (W) */ 198 #define FDDATA 5 /* NEC 765 Data Register (R/W) */ 199 #define FDCTL 7 /* Control Register (W) */ 200 201 /* 202 * The YE-DATA PC Card floppies use PIO to read in the data rather 203 * than DMA due to the wild variability of DMA for the PC Card 204 * devices. DMA was deleted from the PC Card specification in version 205 * 7.2 of the standard, but that post-dates the YE-DATA devices by many 206 * years. 207 * 208 * In addition, if we cannot setup the DMA resources for the ISA 209 * attachment, we'll use this same offset for data transfer. However, 210 * that almost certainly won't work. 211 * 212 * For this mode, offset 0 and 1 must be used to setup the transfer 213 * for this floppy. This is OK for PC Card YE Data devices, but for 214 * ISA this is likely wrong. These registers are only available on 215 * those systems that map them to the floppy drive. Newer systems do 216 * not do this, and we should likely prohibit access to them (or 217 * disallow NODMA to be set). 218 */ 219 #define FDBCDR 0 /* And 1 */ 220 #define FD_YE_DATAPORT 6 /* Drive Data port */ 221 222 #define FDI_DCHG 0x80 /* diskette has been changed */ 223 /* requires drive and motor being selected */ 224 /* is cleared by any step pulse to drive */ 225 226 /* 227 * We have three private BIO commands. 228 */ 229 #define BIO_PROBE BIO_CMD0 230 #define BIO_RDID BIO_CMD1 231 #define BIO_FMT BIO_CMD2 232 233 /* 234 * Per drive structure (softc). 235 */ 236 struct fd_data { 237 u_char *fd_ioptr; /* IO pointer */ 238 u_int fd_iosize; /* Size of IO chunks */ 239 u_int fd_iocount; /* Outstanding requests */ 240 struct fdc_data *fdc; /* pointer to controller structure */ 241 int fdsu; /* this units number on this controller */ 242 enum fd_drivetype type; /* drive type */ 243 struct fd_type *ft; /* pointer to current type descriptor */ 244 struct fd_type fts; /* type descriptors */ 245 int sectorsize; 246 int flags; 247 #define FD_WP (1<<0) /* Write protected */ 248 #define FD_MOTOR (1<<1) /* motor should be on */ 249 #define FD_MOTORWAIT (1<<2) /* motor should be on */ 250 #define FD_EMPTY (1<<3) /* no media */ 251 #define FD_NEWDISK (1<<4) /* media changed */ 252 #define FD_ISADMA (1<<5) /* isa dma started */ 253 int track; /* where we think the head is */ 254 #define FD_NO_TRACK -2 255 int options; /* FDOPT_* */ 256 struct callout toffhandle; 257 struct g_geom *fd_geom; 258 struct g_provider *fd_provider; 259 device_t dev; 260 struct bio_queue_head fd_bq; 261 }; 262 263 #define FD_NOT_VALID -2 264 265 static driver_intr_t fdc_intr; 266 static driver_filter_t fdc_intr_fast; 267 static void fdc_reset(struct fdc_data *); 268 static int fd_probe_disk(struct fd_data *, int *); 269 270 SYSCTL_NODE(_debug, OID_AUTO, fdc, CTLFLAG_RW, 0, "fdc driver"); 271 272 static int fifo_threshold = 8; 273 SYSCTL_INT(_debug_fdc, OID_AUTO, fifo, CTLFLAG_RW, &fifo_threshold, 0, 274 "FIFO threshold setting"); 275 276 static int debugflags = 0; 277 SYSCTL_INT(_debug_fdc, OID_AUTO, debugflags, CTLFLAG_RW, &debugflags, 0, 278 "Debug flags"); 279 280 static int retries = 10; 281 SYSCTL_INT(_debug_fdc, OID_AUTO, retries, CTLFLAG_RW, &retries, 0, 282 "Number of retries to attempt"); 283 284 static int spec1 = 0xaf; 285 SYSCTL_INT(_debug_fdc, OID_AUTO, spec1, CTLFLAG_RW, &spec1, 0, 286 "Specification byte one (step-rate + head unload)"); 287 288 static int spec2 = 0x10; 289 SYSCTL_INT(_debug_fdc, OID_AUTO, spec2, CTLFLAG_RW, &spec2, 0, 290 "Specification byte two (head load time + no-dma)"); 291 292 static int settle; 293 SYSCTL_INT(_debug_fdc, OID_AUTO, settle, CTLFLAG_RW, &settle, 0, 294 "Head settling time in sec/hz"); 295 296 static void 297 fdprinttype(struct fd_type *ft) 298 { 299 300 printf("(%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,0x%x)", 301 ft->sectrac, ft->secsize, ft->datalen, ft->gap, ft->tracks, 302 ft->size, ft->trans, ft->heads, ft->f_gap, ft->f_inter, 303 ft->offset_side2, ft->flags); 304 } 305 306 static void 307 fdsettype(struct fd_data *fd, struct fd_type *ft) 308 { 309 fd->ft = ft; 310 ft->size = ft->sectrac * ft->heads * ft->tracks; 311 fd->sectorsize = 128 << fd->ft->secsize; 312 } 313 314 /* 315 * Bus space handling (access to low-level IO). 316 */ 317 __inline static void 318 fdregwr(struct fdc_data *fdc, int reg, uint8_t v) 319 { 320 321 bus_space_write_1(fdc->iot, fdc->ioh[reg], fdc->ioff[reg], v); 322 } 323 324 __inline static uint8_t 325 fdregrd(struct fdc_data *fdc, int reg) 326 { 327 328 return bus_space_read_1(fdc->iot, fdc->ioh[reg], fdc->ioff[reg]); 329 } 330 331 static void 332 fdctl_wr(struct fdc_data *fdc, u_int8_t v) 333 { 334 335 fdregwr(fdc, FDCTL, v); 336 } 337 338 static void 339 fdout_wr(struct fdc_data *fdc, u_int8_t v) 340 { 341 342 fdregwr(fdc, FDOUT, v); 343 } 344 345 static u_int8_t 346 fdsts_rd(struct fdc_data *fdc) 347 { 348 349 return fdregrd(fdc, FDSTS); 350 } 351 352 static void 353 fddsr_wr(struct fdc_data *fdc, u_int8_t v) 354 { 355 356 fdregwr(fdc, FDDSR, v); 357 } 358 359 static void 360 fddata_wr(struct fdc_data *fdc, u_int8_t v) 361 { 362 363 fdregwr(fdc, FDDATA, v); 364 } 365 366 static u_int8_t 367 fddata_rd(struct fdc_data *fdc) 368 { 369 370 return fdregrd(fdc, FDDATA); 371 } 372 373 static u_int8_t 374 fdin_rd(struct fdc_data *fdc) 375 { 376 377 return fdregrd(fdc, FDCTL); 378 } 379 380 /* 381 * Magic pseudo-DMA initialization for YE FDC. Sets count and 382 * direction. 383 */ 384 static void 385 fdbcdr_wr(struct fdc_data *fdc, int iswrite, uint16_t count) 386 { 387 fdregwr(fdc, FDBCDR, (count - 1) & 0xff); 388 fdregwr(fdc, FDBCDR + 1, 389 (iswrite ? 0x80 : 0) | (((count - 1) >> 8) & 0x7f)); 390 } 391 392 static int 393 fdc_err(struct fdc_data *fdc, const char *s) 394 { 395 fdc->fdc_errs++; 396 if (s) { 397 if (fdc->fdc_errs < FDC_ERRMAX) 398 device_printf(fdc->fdc_dev, "%s", s); 399 else if (fdc->fdc_errs == FDC_ERRMAX) 400 device_printf(fdc->fdc_dev, "too many errors, not " 401 "logging any more\n"); 402 } 403 404 return (1); 405 } 406 407 /* 408 * FDC IO functions, take care of the main status register, timeout 409 * in case the desired status bits are never set. 410 * 411 * These PIO loops initially start out with short delays between 412 * each iteration in the expectation that the required condition 413 * is usually met quickly, so it can be handled immediately. 414 */ 415 static int 416 fdc_in(struct fdc_data *fdc, int *ptr) 417 { 418 int i, j, step; 419 420 step = 1; 421 for (j = 0; j < FDSTS_TIMEOUT; j += step) { 422 i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM); 423 if (i == (NE7_DIO|NE7_RQM)) { 424 i = fddata_rd(fdc); 425 if (ptr) 426 *ptr = i; 427 return (0); 428 } 429 if (i == NE7_RQM) 430 return (fdc_err(fdc, "ready for output in input\n")); 431 step += step; 432 DELAY(step); 433 } 434 return (fdc_err(fdc, bootverbose? "input ready timeout\n": 0)); 435 } 436 437 static int 438 fdc_out(struct fdc_data *fdc, int x) 439 { 440 int i, j, step; 441 442 step = 1; 443 for (j = 0; j < FDSTS_TIMEOUT; j += step) { 444 i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM); 445 if (i == NE7_RQM) { 446 fddata_wr(fdc, x); 447 return (0); 448 } 449 if (i == (NE7_DIO|NE7_RQM)) 450 return (fdc_err(fdc, "ready for input in output\n")); 451 step += step; 452 DELAY(step); 453 } 454 return (fdc_err(fdc, bootverbose? "output ready timeout\n": 0)); 455 } 456 457 /* 458 * fdc_cmd: Send a command to the chip. 459 * Takes a varargs with this structure: 460 * # of output bytes 461 * output bytes as int [...] 462 * # of input bytes 463 * input bytes as int* [...] 464 */ 465 static int 466 fdc_cmd(struct fdc_data *fdc, int n_out, ...) 467 { 468 u_char cmd = 0; 469 int n_in; 470 int n, i; 471 va_list ap; 472 473 va_start(ap, n_out); 474 for (n = 0; n < n_out; n++) { 475 i = va_arg(ap, int); 476 if (n == 0) 477 cmd = i; 478 if (fdc_out(fdc, i) < 0) { 479 char msg[50]; 480 snprintf(msg, sizeof(msg), 481 "cmd %x failed at out byte %d of %d\n", 482 cmd, n + 1, n_out); 483 fdc->flags |= FDC_NEEDS_RESET; 484 va_end(ap); 485 return fdc_err(fdc, msg); 486 } 487 } 488 n_in = va_arg(ap, int); 489 for (n = 0; n < n_in; n++) { 490 int *ptr = va_arg(ap, int *); 491 if (fdc_in(fdc, ptr) < 0) { 492 char msg[50]; 493 snprintf(msg, sizeof(msg), 494 "cmd %02x failed at in byte %d of %d\n", 495 cmd, n + 1, n_in); 496 fdc->flags |= FDC_NEEDS_RESET; 497 va_end(ap); 498 return fdc_err(fdc, msg); 499 } 500 } 501 va_end(ap); 502 return (0); 503 } 504 505 static void 506 fdc_reset(struct fdc_data *fdc) 507 { 508 int i, r[10]; 509 510 if (fdc->fdct == FDC_ENHANCED) { 511 /* Try a software reset, default precomp, and 500 kb/s */ 512 fddsr_wr(fdc, I8207X_DSR_SR); 513 } else { 514 /* Try a hardware reset, keep motor on */ 515 fdout_wr(fdc, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 516 DELAY(100); 517 /* enable FDC, but defer interrupts a moment */ 518 fdout_wr(fdc, fdc->fdout & ~FDO_FDMAEN); 519 } 520 DELAY(100); 521 fdout_wr(fdc, fdc->fdout); 522 523 /* XXX after a reset, silently believe the FDC will accept commands */ 524 if (fdc_cmd(fdc, 3, NE7CMD_SPECIFY, spec1, spec2, 0)) 525 device_printf(fdc->fdc_dev, " SPECIFY failed in reset\n"); 526 527 if (fdc->fdct == FDC_ENHANCED) { 528 if (fdc_cmd(fdc, 4, 529 I8207X_CONFIG, 530 0, 531 0x40 | /* Enable Implied Seek */ 532 0x10 | /* Polling disabled */ 533 (fifo_threshold - 1), /* Fifo threshold */ 534 0x00, /* Precomp track */ 535 0)) 536 device_printf(fdc->fdc_dev, 537 " CONFIGURE failed in reset\n"); 538 if (debugflags & 1) { 539 if (fdc_cmd(fdc, 1, 540 I8207X_DUMPREG, 541 10, &r[0], &r[1], &r[2], &r[3], &r[4], 542 &r[5], &r[6], &r[7], &r[8], &r[9])) 543 device_printf(fdc->fdc_dev, 544 " DUMPREG failed in reset\n"); 545 for (i = 0; i < 10; i++) 546 printf(" %02x", r[i]); 547 printf("\n"); 548 } 549 } 550 } 551 552 static int 553 fdc_sense_drive(struct fdc_data *fdc, int *st3p) 554 { 555 int st3; 556 557 if (fdc_cmd(fdc, 2, NE7CMD_SENSED, fdc->fd->fdsu, 1, &st3)) 558 return (fdc_err(fdc, "Sense Drive Status failed\n")); 559 if (st3p) 560 *st3p = st3; 561 return (0); 562 } 563 564 static int 565 fdc_sense_int(struct fdc_data *fdc, int *st0p, int *cylp) 566 { 567 int cyl, st0, ret; 568 569 ret = fdc_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); 570 if (ret) { 571 (void)fdc_err(fdc, "sense intr err reading stat reg 0\n"); 572 return (ret); 573 } 574 575 if (st0p) 576 *st0p = st0; 577 578 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { 579 /* 580 * There doesn't seem to have been an interrupt. 581 */ 582 return (FD_NOT_VALID); 583 } 584 585 if (fdc_in(fdc, &cyl) < 0) 586 return fdc_err(fdc, "can't get cyl num\n"); 587 588 if (cylp) 589 *cylp = cyl; 590 591 return (0); 592 } 593 594 static int 595 fdc_read_status(struct fdc_data *fdc) 596 { 597 int i, ret, status; 598 599 for (i = ret = 0; i < 7; i++) { 600 ret = fdc_in(fdc, &status); 601 fdc->status[i] = status; 602 if (ret != 0) 603 break; 604 } 605 606 if (ret == 0) 607 fdc->flags |= FDC_STAT_VALID; 608 else 609 fdc->flags &= ~FDC_STAT_VALID; 610 611 return ret; 612 } 613 614 /* 615 * Select this drive 616 */ 617 static void 618 fd_select(struct fd_data *fd) 619 { 620 struct fdc_data *fdc; 621 622 /* XXX: lock controller */ 623 fdc = fd->fdc; 624 fdc->fdout &= ~FDO_FDSEL; 625 fdc->fdout |= FDO_FDMAEN | FDO_FRST | fd->fdsu; 626 fdout_wr(fdc, fdc->fdout); 627 } 628 629 static void 630 fd_turnon(void *arg) 631 { 632 struct fd_data *fd; 633 struct bio *bp; 634 int once; 635 636 fd = arg; 637 mtx_assert(&fd->fdc->fdc_mtx, MA_OWNED); 638 fd->flags &= ~FD_MOTORWAIT; 639 fd->flags |= FD_MOTOR; 640 once = 0; 641 for (;;) { 642 bp = bioq_takefirst(&fd->fd_bq); 643 if (bp == NULL) 644 break; 645 bioq_disksort(&fd->fdc->head, bp); 646 once = 1; 647 } 648 if (once) 649 wakeup(&fd->fdc->head); 650 } 651 652 static void 653 fd_motor(struct fd_data *fd, int turnon) 654 { 655 struct fdc_data *fdc; 656 657 fdc = fd->fdc; 658 /* 659 mtx_assert(&fdc->fdc_mtx, MA_OWNED); 660 */ 661 if (turnon) { 662 fd->flags |= FD_MOTORWAIT; 663 fdc->fdout |= (FDO_MOEN0 << fd->fdsu); 664 callout_reset(&fd->toffhandle, hz, fd_turnon, fd); 665 } else { 666 callout_stop(&fd->toffhandle); 667 fd->flags &= ~(FD_MOTOR|FD_MOTORWAIT); 668 fdc->fdout &= ~(FDO_MOEN0 << fd->fdsu); 669 } 670 fdout_wr(fdc, fdc->fdout); 671 } 672 673 static void 674 fd_turnoff(void *xfd) 675 { 676 struct fd_data *fd = xfd; 677 678 mtx_assert(&fd->fdc->fdc_mtx, MA_OWNED); 679 fd_motor(fd, 0); 680 } 681 682 /* 683 * fdc_intr - wake up the worker thread. 684 */ 685 686 static void 687 fdc_intr(void *arg) 688 { 689 690 wakeup(arg); 691 } 692 693 static int 694 fdc_intr_fast(void *arg) 695 { 696 697 wakeup(arg); 698 return(FILTER_HANDLED); 699 } 700 701 /* 702 * fdc_pio(): perform programmed IO read/write for YE PCMCIA floppy. 703 */ 704 static void 705 fdc_pio(struct fdc_data *fdc) 706 { 707 u_char *cptr; 708 struct bio *bp; 709 u_int count; 710 711 bp = fdc->bp; 712 cptr = fdc->fd->fd_ioptr; 713 count = fdc->fd->fd_iosize; 714 715 if (bp->bio_cmd == BIO_READ) { 716 fdbcdr_wr(fdc, 0, count); 717 bus_space_read_multi_1(fdc->iot, fdc->ioh[FD_YE_DATAPORT], 718 fdc->ioff[FD_YE_DATAPORT], cptr, count); 719 } else { 720 bus_space_write_multi_1(fdc->iot, fdc->ioh[FD_YE_DATAPORT], 721 fdc->ioff[FD_YE_DATAPORT], cptr, count); 722 fdbcdr_wr(fdc, 0, count); /* needed? */ 723 } 724 } 725 726 static int 727 fdc_biodone(struct fdc_data *fdc, int error) 728 { 729 struct fd_data *fd; 730 struct bio *bp; 731 732 fd = fdc->fd; 733 bp = fdc->bp; 734 735 mtx_lock(&fdc->fdc_mtx); 736 if (--fd->fd_iocount == 0) 737 callout_reset(&fd->toffhandle, 4 * hz, fd_turnoff, fd); 738 fdc->bp = NULL; 739 fdc->fd = NULL; 740 mtx_unlock(&fdc->fdc_mtx); 741 if (bp->bio_to != NULL) { 742 if ((debugflags & 2) && fd->fdc->retry > 0) 743 printf("retries: %d\n", fd->fdc->retry); 744 g_io_deliver(bp, error); 745 return (0); 746 } 747 bp->bio_error = error; 748 bp->bio_flags |= BIO_DONE; 749 wakeup(bp); 750 return (0); 751 } 752 753 static int retry_line; 754 755 static int 756 fdc_worker(struct fdc_data *fdc) 757 { 758 struct fd_data *fd; 759 struct bio *bp; 760 int i, nsect; 761 int st0, st3, cyl, mfm, steptrac, cylinder, descyl, sec; 762 int head; 763 static int need_recal; 764 struct fdc_readid *idp; 765 struct fd_formb *finfo; 766 767 /* Have we exhausted our retries ? */ 768 bp = fdc->bp; 769 fd = fdc->fd; 770 if (bp != NULL && 771 (fdc->retry >= retries || (fd->options & FDOPT_NORETRY))) { 772 if ((debugflags & 4)) 773 printf("Too many retries (EIO)\n"); 774 if (fdc->flags & FDC_NEEDS_RESET) { 775 mtx_lock(&fdc->fdc_mtx); 776 fd->flags |= FD_EMPTY; 777 mtx_unlock(&fdc->fdc_mtx); 778 } 779 return (fdc_biodone(fdc, EIO)); 780 } 781 782 /* Disable ISADMA if we bailed while it was active */ 783 if (fd != NULL && (fd->flags & FD_ISADMA)) { 784 isa_dmadone( 785 bp->bio_cmd & BIO_READ ? ISADMA_READ : ISADMA_WRITE, 786 fd->fd_ioptr, fd->fd_iosize, fdc->dmachan); 787 mtx_lock(&fdc->fdc_mtx); 788 fd->flags &= ~FD_ISADMA; 789 mtx_unlock(&fdc->fdc_mtx); 790 } 791 792 /* Unwedge the controller ? */ 793 if (fdc->flags & FDC_NEEDS_RESET) { 794 fdc->flags &= ~FDC_NEEDS_RESET; 795 fdc_reset(fdc); 796 tsleep(fdc, PRIBIO, "fdcrst", hz); 797 /* Discard results */ 798 for (i = 0; i < 4; i++) 799 fdc_sense_int(fdc, &st0, &cyl); 800 /* All drives must recal */ 801 need_recal = 0xf; 802 } 803 804 /* Pick up a request, if need be wait for it */ 805 if (fdc->bp == NULL) { 806 mtx_lock(&fdc->fdc_mtx); 807 do { 808 fdc->bp = bioq_takefirst(&fdc->head); 809 if (fdc->bp == NULL) 810 msleep(&fdc->head, &fdc->fdc_mtx, 811 PRIBIO, "-", hz); 812 } while (fdc->bp == NULL && 813 (fdc->flags & FDC_KTHREAD_EXIT) == 0); 814 mtx_unlock(&fdc->fdc_mtx); 815 816 if (fdc->bp == NULL) 817 /* 818 * Nothing to do, worker thread has been 819 * requested to stop. 820 */ 821 return (0); 822 823 bp = fdc->bp; 824 fd = fdc->fd = bp->bio_driver1; 825 fdc->retry = 0; 826 fd->fd_ioptr = bp->bio_data; 827 if (bp->bio_cmd & BIO_FMT) { 828 i = offsetof(struct fd_formb, fd_formb_cylno(0)); 829 fd->fd_ioptr += i; 830 fd->fd_iosize = bp->bio_length - i; 831 } 832 } 833 834 /* Select drive, setup params */ 835 fd_select(fd); 836 if (fdc->fdct == FDC_ENHANCED) 837 fddsr_wr(fdc, fd->ft->trans); 838 else 839 fdctl_wr(fdc, fd->ft->trans); 840 841 if (bp->bio_cmd & BIO_PROBE) { 842 if ((!(device_get_flags(fd->dev) & FD_NO_CHLINE) && 843 !(fdin_rd(fdc) & FDI_DCHG) && 844 !(fd->flags & FD_EMPTY)) || 845 fd_probe_disk(fd, &need_recal) == 0) 846 return (fdc_biodone(fdc, 0)); 847 return (1); 848 } 849 850 /* 851 * If we are dead just flush the requests 852 */ 853 if (fd->flags & FD_EMPTY) 854 return (fdc_biodone(fdc, ENXIO)); 855 856 /* Check if we lost our media */ 857 if (fdin_rd(fdc) & FDI_DCHG) { 858 if (debugflags & 0x40) 859 printf("Lost disk\n"); 860 mtx_lock(&fdc->fdc_mtx); 861 fd->flags |= FD_EMPTY; 862 fd->flags |= FD_NEWDISK; 863 mtx_unlock(&fdc->fdc_mtx); 864 g_topology_lock(); 865 g_orphan_provider(fd->fd_provider, ENXIO); 866 fd->fd_provider->flags |= G_PF_WITHER; 867 fd->fd_provider = 868 g_new_providerf(fd->fd_geom, fd->fd_geom->name); 869 g_error_provider(fd->fd_provider, 0); 870 g_topology_unlock(); 871 return (fdc_biodone(fdc, ENXIO)); 872 } 873 874 /* Check if the floppy is write-protected */ 875 if(bp->bio_cmd & (BIO_FMT | BIO_WRITE)) { 876 retry_line = __LINE__; 877 if(fdc_sense_drive(fdc, &st3) != 0) 878 return (1); 879 if(st3 & NE7_ST3_WP) 880 return (fdc_biodone(fdc, EROFS)); 881 } 882 883 mfm = (fd->ft->flags & FL_MFM)? NE7CMD_MFM: 0; 884 steptrac = (fd->ft->flags & FL_2STEP)? 2: 1; 885 i = fd->ft->sectrac * fd->ft->heads; 886 cylinder = bp->bio_pblkno / i; 887 descyl = cylinder * steptrac; 888 sec = bp->bio_pblkno % i; 889 nsect = i - sec; 890 head = sec / fd->ft->sectrac; 891 sec = sec % fd->ft->sectrac + 1; 892 893 /* If everything is going swimmingly, use multisector xfer */ 894 if (fdc->retry == 0 && bp->bio_cmd & (BIO_READ|BIO_WRITE)) { 895 fd->fd_iosize = imin(nsect * fd->sectorsize, bp->bio_resid); 896 nsect = fd->fd_iosize / fd->sectorsize; 897 } else if (bp->bio_cmd & (BIO_READ|BIO_WRITE)) { 898 fd->fd_iosize = fd->sectorsize; 899 nsect = 1; 900 } 901 902 /* Do RECAL if we need to or are going to track zero anyway */ 903 if ((need_recal & (1 << fd->fdsu)) || 904 (cylinder == 0 && fd->track != 0) || 905 fdc->retry > 2) { 906 retry_line = __LINE__; 907 if (fdc_cmd(fdc, 2, NE7CMD_RECAL, fd->fdsu, 0)) 908 return (1); 909 tsleep(fdc, PRIBIO, "fdrecal", hz); 910 retry_line = __LINE__; 911 if (fdc_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 912 return (1); /* XXX */ 913 retry_line = __LINE__; 914 if ((st0 & 0xc0) || cyl != 0) 915 return (1); 916 need_recal &= ~(1 << fd->fdsu); 917 fd->track = 0; 918 /* let the heads settle */ 919 if (settle) 920 tsleep(fdc->fd, PRIBIO, "fdhdstl", settle); 921 } 922 923 /* 924 * SEEK to where we want to be 925 * 926 * Enhanced controllers do implied seeks for read&write as long as 927 * we do not need multiple steps per track. 928 */ 929 if (cylinder != fd->track && ( 930 fdc->fdct != FDC_ENHANCED || 931 descyl != cylinder || 932 (bp->bio_cmd & (BIO_RDID|BIO_FMT)))) { 933 retry_line = __LINE__; 934 if (fdc_cmd(fdc, 3, NE7CMD_SEEK, fd->fdsu, descyl, 0)) 935 return (1); 936 tsleep(fdc, PRIBIO, "fdseek", hz); 937 retry_line = __LINE__; 938 if (fdc_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 939 return (1); /* XXX */ 940 retry_line = __LINE__; 941 if ((st0 & 0xc0) || cyl != descyl) { 942 need_recal |= (1 << fd->fdsu); 943 return (1); 944 } 945 /* let the heads settle */ 946 if (settle) 947 tsleep(fdc->fd, PRIBIO, "fdhdstl", settle); 948 } 949 fd->track = cylinder; 950 951 if (debugflags & 8) 952 printf("op %x bn %ju siz %u ptr %p retry %d\n", 953 bp->bio_cmd, bp->bio_pblkno, fd->fd_iosize, 954 fd->fd_ioptr, fdc->retry); 955 956 /* Setup ISADMA if we need it and have it */ 957 if ((bp->bio_cmd & (BIO_READ|BIO_WRITE|BIO_FMT)) 958 && !(fdc->flags & FDC_NODMA)) { 959 isa_dmastart( 960 bp->bio_cmd & BIO_READ ? ISADMA_READ : ISADMA_WRITE, 961 fd->fd_ioptr, fd->fd_iosize, fdc->dmachan); 962 mtx_lock(&fdc->fdc_mtx); 963 fd->flags |= FD_ISADMA; 964 mtx_unlock(&fdc->fdc_mtx); 965 } 966 967 /* Do PIO if we have to */ 968 if (fdc->flags & FDC_NODMA) { 969 if (bp->bio_cmd & (BIO_READ|BIO_WRITE|BIO_FMT)) 970 fdbcdr_wr(fdc, 1, fd->fd_iosize); 971 if (bp->bio_cmd & (BIO_WRITE|BIO_FMT)) 972 fdc_pio(fdc); 973 } 974 975 switch(bp->bio_cmd) { 976 case BIO_FMT: 977 /* formatting */ 978 finfo = (struct fd_formb *)bp->bio_data; 979 retry_line = __LINE__; 980 if (fdc_cmd(fdc, 6, 981 NE7CMD_FORMAT | mfm, 982 head << 2 | fd->fdsu, 983 finfo->fd_formb_secshift, 984 finfo->fd_formb_nsecs, 985 finfo->fd_formb_gaplen, 986 finfo->fd_formb_fillbyte, 0)) 987 return (1); 988 break; 989 case BIO_RDID: 990 retry_line = __LINE__; 991 if (fdc_cmd(fdc, 2, 992 NE7CMD_READID | mfm, 993 head << 2 | fd->fdsu, 0)) 994 return (1); 995 break; 996 case BIO_READ: 997 retry_line = __LINE__; 998 if (fdc_cmd(fdc, 9, 999 NE7CMD_READ | NE7CMD_SK | mfm | NE7CMD_MT, 1000 head << 2 | fd->fdsu, /* head & unit */ 1001 fd->track, /* track */ 1002 head, /* head */ 1003 sec, /* sector + 1 */ 1004 fd->ft->secsize, /* sector size */ 1005 fd->ft->sectrac, /* sectors/track */ 1006 fd->ft->gap, /* gap size */ 1007 fd->ft->datalen, /* data length */ 1008 0)) 1009 return (1); 1010 break; 1011 case BIO_WRITE: 1012 retry_line = __LINE__; 1013 if (fdc_cmd(fdc, 9, 1014 NE7CMD_WRITE | mfm | NE7CMD_MT, 1015 head << 2 | fd->fdsu, /* head & unit */ 1016 fd->track, /* track */ 1017 head, /* head */ 1018 sec, /* sector + 1 */ 1019 fd->ft->secsize, /* sector size */ 1020 fd->ft->sectrac, /* sectors/track */ 1021 fd->ft->gap, /* gap size */ 1022 fd->ft->datalen, /* data length */ 1023 0)) 1024 return (1); 1025 break; 1026 default: 1027 KASSERT(0 == 1, ("Wrong bio_cmd %x\n", bp->bio_cmd)); 1028 } 1029 1030 /* Wait for interrupt */ 1031 i = tsleep(fdc, PRIBIO, "fddata", hz); 1032 1033 /* PIO if the read looks good */ 1034 if (i == 0 && (fdc->flags & FDC_NODMA) && (bp->bio_cmd & BIO_READ)) 1035 fdc_pio(fdc); 1036 1037 /* Finish DMA */ 1038 if (fd->flags & FD_ISADMA) { 1039 isa_dmadone( 1040 bp->bio_cmd & BIO_READ ? ISADMA_READ : ISADMA_WRITE, 1041 fd->fd_ioptr, fd->fd_iosize, fdc->dmachan); 1042 mtx_lock(&fdc->fdc_mtx); 1043 fd->flags &= ~FD_ISADMA; 1044 mtx_unlock(&fdc->fdc_mtx); 1045 } 1046 1047 if (i != 0) { 1048 /* 1049 * Timeout. 1050 * 1051 * Due to IBM's brain-dead design, the FDC has a faked ready 1052 * signal, hardwired to ready == true. Thus, any command 1053 * issued if there's no diskette in the drive will _never_ 1054 * complete, and must be aborted by resetting the FDC. 1055 * Many thanks, Big Blue! 1056 */ 1057 retry_line = __LINE__; 1058 fdc->flags |= FDC_NEEDS_RESET; 1059 return (1); 1060 } 1061 1062 retry_line = __LINE__; 1063 if (fdc_read_status(fdc)) 1064 return (1); 1065 1066 if (debugflags & 0x10) 1067 printf(" -> %x %x %x %x\n", 1068 fdc->status[0], fdc->status[1], 1069 fdc->status[2], fdc->status[3]); 1070 1071 st0 = fdc->status[0] & NE7_ST0_IC; 1072 if (st0 != 0) { 1073 retry_line = __LINE__; 1074 if (st0 == NE7_ST0_IC_AT && fdc->status[1] & NE7_ST1_OR) { 1075 /* 1076 * DMA overrun. Someone hogged the bus and 1077 * didn't release it in time for the next 1078 * FDC transfer. 1079 */ 1080 return (1); 1081 } 1082 retry_line = __LINE__; 1083 if(st0 == NE7_ST0_IC_IV) { 1084 fdc->flags |= FDC_NEEDS_RESET; 1085 return (1); 1086 } 1087 retry_line = __LINE__; 1088 if(st0 == NE7_ST0_IC_AT && fdc->status[2] & NE7_ST2_WC) { 1089 need_recal |= (1 << fd->fdsu); 1090 return (1); 1091 } 1092 if (debugflags & 0x20) { 1093 printf("status %02x %02x %02x %02x %02x %02x\n", 1094 fdc->status[0], fdc->status[1], fdc->status[2], 1095 fdc->status[3], fdc->status[4], fdc->status[5]); 1096 } 1097 retry_line = __LINE__; 1098 return (1); 1099 } 1100 /* All OK */ 1101 switch(bp->bio_cmd) { 1102 case BIO_RDID: 1103 /* copy out ID field contents */ 1104 idp = (struct fdc_readid *)bp->bio_data; 1105 idp->cyl = fdc->status[3]; 1106 idp->head = fdc->status[4]; 1107 idp->sec = fdc->status[5]; 1108 idp->secshift = fdc->status[6]; 1109 if (debugflags & 0x40) 1110 printf("c %d h %d s %d z %d\n", 1111 idp->cyl, idp->head, idp->sec, idp->secshift); 1112 break; 1113 case BIO_READ: 1114 case BIO_WRITE: 1115 bp->bio_pblkno += nsect; 1116 bp->bio_resid -= fd->fd_iosize; 1117 bp->bio_completed += fd->fd_iosize; 1118 fd->fd_ioptr += fd->fd_iosize; 1119 /* Since we managed to get something done, reset the retry */ 1120 fdc->retry = 0; 1121 if (bp->bio_resid > 0) 1122 return (0); 1123 break; 1124 case BIO_FMT: 1125 break; 1126 } 1127 return (fdc_biodone(fdc, 0)); 1128 } 1129 1130 static void 1131 fdc_thread(void *arg) 1132 { 1133 struct fdc_data *fdc; 1134 1135 fdc = arg; 1136 int i; 1137 1138 mtx_lock(&fdc->fdc_mtx); 1139 fdc->flags |= FDC_KTHREAD_ALIVE; 1140 while ((fdc->flags & FDC_KTHREAD_EXIT) == 0) { 1141 mtx_unlock(&fdc->fdc_mtx); 1142 i = fdc_worker(fdc); 1143 if (i && debugflags & 0x20) { 1144 if (fdc->bp != NULL) { 1145 g_print_bio(fdc->bp); 1146 printf("\n"); 1147 } 1148 printf("Retry line %d\n", retry_line); 1149 } 1150 fdc->retry += i; 1151 mtx_lock(&fdc->fdc_mtx); 1152 } 1153 fdc->flags &= ~(FDC_KTHREAD_EXIT | FDC_KTHREAD_ALIVE); 1154 mtx_unlock(&fdc->fdc_mtx); 1155 1156 kproc_exit(0); 1157 } 1158 1159 /* 1160 * Enqueue a request. 1161 */ 1162 static void 1163 fd_enqueue(struct fd_data *fd, struct bio *bp) 1164 { 1165 struct fdc_data *fdc; 1166 int call; 1167 1168 call = 0; 1169 fdc = fd->fdc; 1170 mtx_lock(&fdc->fdc_mtx); 1171 /* If we go from idle, cancel motor turnoff */ 1172 if (fd->fd_iocount++ == 0) 1173 callout_stop(&fd->toffhandle); 1174 if (fd->flags & FD_MOTOR) { 1175 /* The motor is on, send it directly to the controller */ 1176 bioq_disksort(&fdc->head, bp); 1177 wakeup(&fdc->head); 1178 } else { 1179 /* Queue it on the drive until the motor has started */ 1180 bioq_insert_tail(&fd->fd_bq, bp); 1181 if (!(fd->flags & FD_MOTORWAIT)) 1182 fd_motor(fd, 1); 1183 } 1184 mtx_unlock(&fdc->fdc_mtx); 1185 } 1186 1187 /* 1188 * Try to find out if we have a disk in the drive. 1189 */ 1190 static int 1191 fd_probe_disk(struct fd_data *fd, int *recal) 1192 { 1193 struct fdc_data *fdc; 1194 int st0, st3, cyl; 1195 int oopts, ret; 1196 1197 fdc = fd->fdc; 1198 oopts = fd->options; 1199 fd->options |= FDOPT_NOERRLOG | FDOPT_NORETRY; 1200 ret = 1; 1201 1202 /* 1203 * First recal, then seek to cyl#1, this clears the old condition on 1204 * the disk change line so we can examine it for current status. 1205 */ 1206 if (debugflags & 0x40) 1207 printf("New disk in probe\n"); 1208 mtx_lock(&fdc->fdc_mtx); 1209 fd->flags |= FD_NEWDISK; 1210 mtx_unlock(&fdc->fdc_mtx); 1211 if (fdc_cmd(fdc, 2, NE7CMD_RECAL, fd->fdsu, 0)) 1212 goto done; 1213 tsleep(fdc, PRIBIO, "fdrecal", hz); 1214 if (fdc_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 1215 goto done; /* XXX */ 1216 if ((st0 & 0xc0) || cyl != 0) 1217 goto done; 1218 1219 /* Seek to track 1 */ 1220 if (fdc_cmd(fdc, 3, NE7CMD_SEEK, fd->fdsu, 1, 0)) 1221 goto done; 1222 tsleep(fdc, PRIBIO, "fdseek", hz); 1223 if (fdc_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 1224 goto done; /* XXX */ 1225 *recal |= (1 << fd->fdsu); 1226 if (fdin_rd(fdc) & FDI_DCHG) { 1227 if (debugflags & 0x40) 1228 printf("Empty in probe\n"); 1229 mtx_lock(&fdc->fdc_mtx); 1230 fd->flags |= FD_EMPTY; 1231 mtx_unlock(&fdc->fdc_mtx); 1232 } else { 1233 if (fdc_sense_drive(fdc, &st3) != 0) 1234 goto done; 1235 if (debugflags & 0x40) 1236 printf("Got disk in probe\n"); 1237 mtx_lock(&fdc->fdc_mtx); 1238 fd->flags &= ~FD_EMPTY; 1239 if (st3 & NE7_ST3_WP) 1240 fd->flags |= FD_WP; 1241 else 1242 fd->flags &= ~FD_WP; 1243 mtx_unlock(&fdc->fdc_mtx); 1244 } 1245 ret = 0; 1246 1247 done: 1248 fd->options = oopts; 1249 return (ret); 1250 } 1251 1252 static int 1253 fdmisccmd(struct fd_data *fd, u_int cmd, void *data) 1254 { 1255 struct bio *bp; 1256 struct fd_formb *finfo; 1257 struct fdc_readid *idfield; 1258 int error; 1259 1260 bp = malloc(sizeof(struct bio), M_TEMP, M_WAITOK | M_ZERO); 1261 1262 /* 1263 * Set up a bio request for fdstrategy(). bio_offset is faked 1264 * so that fdstrategy() will seek to the the requested 1265 * cylinder, and use the desired head. 1266 */ 1267 bp->bio_cmd = cmd; 1268 if (cmd == BIO_FMT) { 1269 finfo = (struct fd_formb *)data; 1270 bp->bio_pblkno = 1271 (finfo->cyl * fd->ft->heads + finfo->head) * 1272 fd->ft->sectrac; 1273 bp->bio_length = sizeof *finfo; 1274 } else if (cmd == BIO_RDID) { 1275 idfield = (struct fdc_readid *)data; 1276 bp->bio_pblkno = 1277 (idfield->cyl * fd->ft->heads + idfield->head) * 1278 fd->ft->sectrac; 1279 bp->bio_length = sizeof(struct fdc_readid); 1280 } else if (cmd == BIO_PROBE) { 1281 /* nothing */ 1282 } else 1283 panic("wrong cmd in fdmisccmd()"); 1284 bp->bio_offset = bp->bio_pblkno * fd->sectorsize; 1285 bp->bio_data = data; 1286 bp->bio_driver1 = fd; 1287 bp->bio_flags = 0; 1288 1289 fd_enqueue(fd, bp); 1290 1291 do { 1292 tsleep(bp, PRIBIO, "fdwait", hz); 1293 } while (!(bp->bio_flags & BIO_DONE)); 1294 error = bp->bio_error; 1295 1296 free(bp, M_TEMP); 1297 return (error); 1298 } 1299 1300 /* 1301 * Try figuring out the density of the media present in our device. 1302 */ 1303 static int 1304 fdautoselect(struct fd_data *fd) 1305 { 1306 struct fd_type *fdtp; 1307 struct fdc_readid id; 1308 int oopts, rv; 1309 1310 if (!(fd->ft->flags & FL_AUTO)) 1311 return (0); 1312 1313 fdtp = fd_native_types[fd->type]; 1314 fdsettype(fd, fdtp); 1315 if (!(fd->ft->flags & FL_AUTO)) 1316 return (0); 1317 1318 /* 1319 * Try reading sector ID fields, first at cylinder 0, head 0, 1320 * then at cylinder 2, head N. We don't probe cylinder 1, 1321 * since for 5.25in DD media in a HD drive, there are no data 1322 * to read (2 step pulses per media cylinder required). For 1323 * two-sided media, the second probe always goes to head 1, so 1324 * we can tell them apart from single-sided media. As a 1325 * side-effect this means that single-sided media should be 1326 * mentioned in the search list after two-sided media of an 1327 * otherwise identical density. Media with a different number 1328 * of sectors per track but otherwise identical parameters 1329 * cannot be distinguished at all. 1330 * 1331 * If we successfully read an ID field on both cylinders where 1332 * the recorded values match our expectation, we are done. 1333 * Otherwise, we try the next density entry from the table. 1334 * 1335 * Stepping to cylinder 2 has the side-effect of clearing the 1336 * unit attention bit. 1337 */ 1338 oopts = fd->options; 1339 fd->options |= FDOPT_NOERRLOG | FDOPT_NORETRY; 1340 for (; fdtp->heads; fdtp++) { 1341 fdsettype(fd, fdtp); 1342 1343 id.cyl = id.head = 0; 1344 rv = fdmisccmd(fd, BIO_RDID, &id); 1345 if (rv != 0) 1346 continue; 1347 if (id.cyl != 0 || id.head != 0 || id.secshift != fdtp->secsize) 1348 continue; 1349 id.cyl = 2; 1350 id.head = fd->ft->heads - 1; 1351 rv = fdmisccmd(fd, BIO_RDID, &id); 1352 if (id.cyl != 2 || id.head != fdtp->heads - 1 || 1353 id.secshift != fdtp->secsize) 1354 continue; 1355 if (rv == 0) 1356 break; 1357 } 1358 1359 fd->options = oopts; 1360 if (fdtp->heads == 0) { 1361 if (debugflags & 0x40) 1362 device_printf(fd->dev, "autoselection failed\n"); 1363 fdsettype(fd, fd_native_types[fd->type]); 1364 return (-1); 1365 } else { 1366 if (debugflags & 0x40) { 1367 device_printf(fd->dev, 1368 "autoselected %d KB medium\n", fd->ft->size / 2); 1369 fdprinttype(fd->ft); 1370 } 1371 return (0); 1372 } 1373 } 1374 1375 /* 1376 * GEOM class implementation 1377 */ 1378 1379 static g_access_t fd_access; 1380 static g_start_t fd_start; 1381 static g_ioctl_t fd_ioctl; 1382 1383 struct g_class g_fd_class = { 1384 .name = "FD", 1385 .version = G_VERSION, 1386 .start = fd_start, 1387 .access = fd_access, 1388 .ioctl = fd_ioctl, 1389 }; 1390 1391 static int 1392 fd_access(struct g_provider *pp, int r, int w, int e) 1393 { 1394 struct fd_data *fd; 1395 struct fdc_data *fdc; 1396 int ar, aw, ae; 1397 int busy; 1398 1399 fd = pp->geom->softc; 1400 fdc = fd->fdc; 1401 1402 /* 1403 * If our provider is withering, we can only get negative requests 1404 * and we don't want to even see them 1405 */ 1406 if (pp->flags & G_PF_WITHER) 1407 return (0); 1408 1409 ar = r + pp->acr; 1410 aw = w + pp->acw; 1411 ae = e + pp->ace; 1412 1413 if (ar == 0 && aw == 0 && ae == 0) { 1414 device_unbusy(fd->dev); 1415 return (0); 1416 } 1417 1418 busy = 0; 1419 if (pp->acr == 0 && pp->acw == 0 && pp->ace == 0) { 1420 if (fdmisccmd(fd, BIO_PROBE, NULL)) 1421 return (ENXIO); 1422 if (fd->flags & FD_EMPTY) 1423 return (ENXIO); 1424 if (fd->flags & FD_NEWDISK) { 1425 if (fdautoselect(fd) != 0 && 1426 (device_get_flags(fd->dev) & FD_NO_CHLINE)) { 1427 mtx_lock(&fdc->fdc_mtx); 1428 fd->flags |= FD_EMPTY; 1429 mtx_unlock(&fdc->fdc_mtx); 1430 return (ENXIO); 1431 } 1432 mtx_lock(&fdc->fdc_mtx); 1433 fd->flags &= ~FD_NEWDISK; 1434 mtx_unlock(&fdc->fdc_mtx); 1435 } 1436 device_busy(fd->dev); 1437 busy = 1; 1438 } 1439 1440 if (w > 0 && (fd->flags & FD_WP)) { 1441 if (busy) 1442 device_unbusy(fd->dev); 1443 return (EROFS); 1444 } 1445 1446 pp->sectorsize = fd->sectorsize; 1447 pp->stripesize = fd->ft->heads * fd->ft->sectrac * fd->sectorsize; 1448 pp->mediasize = pp->stripesize * fd->ft->tracks; 1449 return (0); 1450 } 1451 1452 static void 1453 fd_start(struct bio *bp) 1454 { 1455 struct fdc_data * fdc; 1456 struct fd_data * fd; 1457 1458 fd = bp->bio_to->geom->softc; 1459 fdc = fd->fdc; 1460 bp->bio_driver1 = fd; 1461 if (bp->bio_cmd & BIO_GETATTR) { 1462 if (g_handleattr_int(bp, "GEOM::fwsectors", fd->ft->sectrac)) 1463 return; 1464 if (g_handleattr_int(bp, "GEOM::fwheads", fd->ft->heads)) 1465 return; 1466 g_io_deliver(bp, ENOIOCTL); 1467 return; 1468 } 1469 if (!(bp->bio_cmd & (BIO_READ|BIO_WRITE))) { 1470 g_io_deliver(bp, EOPNOTSUPP); 1471 return; 1472 } 1473 bp->bio_pblkno = bp->bio_offset / fd->sectorsize; 1474 bp->bio_resid = bp->bio_length; 1475 fd_enqueue(fd, bp); 1476 return; 1477 } 1478 1479 static int 1480 fd_ioctl(struct g_provider *pp, u_long cmd, void *data, int fflag, struct thread *td) 1481 { 1482 struct fd_data *fd; 1483 struct fdc_status *fsp; 1484 struct fdc_readid *rid; 1485 int error; 1486 1487 fd = pp->geom->softc; 1488 1489 switch (cmd) { 1490 case FD_GTYPE: /* get drive type */ 1491 *(struct fd_type *)data = *fd->ft; 1492 return (0); 1493 1494 case FD_STYPE: /* set drive type */ 1495 /* 1496 * Allow setting drive type temporarily iff 1497 * currently unset. Used for fdformat so any 1498 * user can set it, and then start formatting. 1499 */ 1500 fd->fts = *(struct fd_type *)data; 1501 if (fd->fts.sectrac) { 1502 /* XXX: check for rubbish */ 1503 fdsettype(fd, &fd->fts); 1504 } else { 1505 fdsettype(fd, fd_native_types[fd->type]); 1506 } 1507 if (debugflags & 0x40) 1508 fdprinttype(fd->ft); 1509 return (0); 1510 1511 case FD_GOPTS: /* get drive options */ 1512 *(int *)data = fd->options; 1513 return (0); 1514 1515 case FD_SOPTS: /* set drive options */ 1516 fd->options = *(int *)data; 1517 return (0); 1518 1519 case FD_CLRERR: 1520 error = priv_check(td, PRIV_DRIVER); 1521 if (error) 1522 return (error); 1523 fd->fdc->fdc_errs = 0; 1524 return (0); 1525 1526 case FD_GSTAT: 1527 fsp = (struct fdc_status *)data; 1528 if ((fd->fdc->flags & FDC_STAT_VALID) == 0) 1529 return (EINVAL); 1530 memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); 1531 return (0); 1532 1533 case FD_GDTYPE: 1534 *(enum fd_drivetype *)data = fd->type; 1535 return (0); 1536 1537 case FD_FORM: 1538 if (!(fflag & FWRITE)) 1539 return (EPERM); 1540 if (((struct fd_formb *)data)->format_version != 1541 FD_FORMAT_VERSION) 1542 return (EINVAL); /* wrong version of formatting prog */ 1543 error = fdmisccmd(fd, BIO_FMT, data); 1544 mtx_lock(&fd->fdc->fdc_mtx); 1545 fd->flags |= FD_NEWDISK; 1546 mtx_unlock(&fd->fdc->fdc_mtx); 1547 break; 1548 1549 case FD_READID: 1550 rid = (struct fdc_readid *)data; 1551 if (rid->cyl > 85 || rid->head > 1) 1552 return (EINVAL); 1553 error = fdmisccmd(fd, BIO_RDID, data); 1554 break; 1555 1556 case FIONBIO: 1557 case FIOASYNC: 1558 /* For backwards compat with old fd*(8) tools */ 1559 error = 0; 1560 break; 1561 1562 default: 1563 if (debugflags & 0x80) 1564 printf("Unknown ioctl %lx\n", cmd); 1565 error = ENOIOCTL; 1566 break; 1567 } 1568 return (error); 1569 }; 1570 1571 1572 1573 /* 1574 * Configuration/initialization stuff, per controller. 1575 */ 1576 1577 devclass_t fdc_devclass; 1578 static devclass_t fd_devclass; 1579 1580 struct fdc_ivars { 1581 int fdunit; 1582 int fdtype; 1583 }; 1584 1585 void 1586 fdc_release_resources(struct fdc_data *fdc) 1587 { 1588 device_t dev; 1589 struct resource *last; 1590 int i; 1591 1592 dev = fdc->fdc_dev; 1593 if (fdc->fdc_intr) 1594 bus_teardown_intr(dev, fdc->res_irq, fdc->fdc_intr); 1595 fdc->fdc_intr = NULL; 1596 if (fdc->res_irq != NULL) 1597 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 1598 fdc->res_irq); 1599 fdc->res_irq = NULL; 1600 last = NULL; 1601 for (i = 0; i < FDC_MAXREG; i++) { 1602 if (fdc->resio[i] != NULL && fdc->resio[i] != last) { 1603 bus_release_resource(dev, SYS_RES_IOPORT, 1604 fdc->ridio[i], fdc->resio[i]); 1605 last = fdc->resio[i]; 1606 fdc->resio[i] = NULL; 1607 } 1608 } 1609 if (fdc->res_drq != NULL) 1610 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 1611 fdc->res_drq); 1612 fdc->res_drq = NULL; 1613 } 1614 1615 int 1616 fdc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 1617 { 1618 struct fdc_ivars *ivars = device_get_ivars(child); 1619 1620 switch (which) { 1621 case FDC_IVAR_FDUNIT: 1622 *result = ivars->fdunit; 1623 break; 1624 case FDC_IVAR_FDTYPE: 1625 *result = ivars->fdtype; 1626 break; 1627 default: 1628 return (ENOENT); 1629 } 1630 return (0); 1631 } 1632 1633 int 1634 fdc_write_ivar(device_t dev, device_t child, int which, uintptr_t value) 1635 { 1636 struct fdc_ivars *ivars = device_get_ivars(child); 1637 1638 switch (which) { 1639 case FDC_IVAR_FDUNIT: 1640 ivars->fdunit = value; 1641 break; 1642 case FDC_IVAR_FDTYPE: 1643 ivars->fdtype = value; 1644 break; 1645 default: 1646 return (ENOENT); 1647 } 1648 return (0); 1649 } 1650 1651 int 1652 fdc_initial_reset(device_t dev, struct fdc_data *fdc) 1653 { 1654 int ic_type, part_id; 1655 1656 /* 1657 * A status value of 0xff is very unlikely, but not theoretically 1658 * impossible, but it is far more likely to indicate an empty bus. 1659 */ 1660 if (fdsts_rd(fdc) == 0xff) 1661 return (ENXIO); 1662 1663 /* 1664 * Assert a reset to the floppy controller and check that the status 1665 * register goes to zero. 1666 */ 1667 fdout_wr(fdc, 0); 1668 fdout_wr(fdc, 0); 1669 if (fdsts_rd(fdc) != 0) 1670 return (ENXIO); 1671 1672 /* 1673 * Clear the reset and see it come ready. 1674 */ 1675 fdout_wr(fdc, FDO_FRST); 1676 DELAY(100); 1677 if (fdsts_rd(fdc) != 0x80) 1678 return (ENXIO); 1679 1680 /* Then, see if it can handle a command. */ 1681 if (fdc_cmd(fdc, 3, NE7CMD_SPECIFY, 0xaf, 0x1e, 0)) 1682 return (ENXIO); 1683 1684 /* 1685 * Try to identify the chip. 1686 * 1687 * The i8272 datasheet documents that unknown commands 1688 * will return ST0 as 0x80. The i8272 is supposedly identical 1689 * to the NEC765. 1690 * The i82077SL datasheet says 0x90 for the VERSION command, 1691 * and several "superio" chips emulate this. 1692 */ 1693 if (fdc_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type)) 1694 return (ENXIO); 1695 if (fdc_cmd(fdc, 1, 0x18, 1, &part_id)) 1696 return (ENXIO); 1697 if (bootverbose) 1698 device_printf(dev, 1699 "ic_type %02x part_id %02x\n", ic_type, part_id); 1700 switch (ic_type & 0xff) { 1701 case 0x80: 1702 device_set_desc(dev, "NEC 765 or clone"); 1703 fdc->fdct = FDC_NE765; 1704 break; 1705 case 0x81: 1706 case 0x90: 1707 device_set_desc(dev, 1708 "Enhanced floppy controller"); 1709 fdc->fdct = FDC_ENHANCED; 1710 break; 1711 default: 1712 device_set_desc(dev, "Generic floppy controller"); 1713 fdc->fdct = FDC_UNKNOWN; 1714 break; 1715 } 1716 return (0); 1717 } 1718 1719 int 1720 fdc_detach(device_t dev) 1721 { 1722 struct fdc_data *fdc; 1723 int error; 1724 1725 fdc = device_get_softc(dev); 1726 1727 /* have our children detached first */ 1728 if ((error = bus_generic_detach(dev))) 1729 return (error); 1730 1731 if (fdc->fdc_intr) 1732 bus_teardown_intr(dev, fdc->res_irq, fdc->fdc_intr); 1733 fdc->fdc_intr = NULL; 1734 1735 /* kill worker thread */ 1736 mtx_lock(&fdc->fdc_mtx); 1737 fdc->flags |= FDC_KTHREAD_EXIT; 1738 wakeup(&fdc->head); 1739 while ((fdc->flags & FDC_KTHREAD_ALIVE) != 0) 1740 msleep(fdc->fdc_thread, &fdc->fdc_mtx, PRIBIO, "fdcdet", 0); 1741 mtx_unlock(&fdc->fdc_mtx); 1742 1743 /* reset controller, turn motor off */ 1744 fdout_wr(fdc, 0); 1745 1746 if (!(fdc->flags & FDC_NODMA)) 1747 isa_dma_release(fdc->dmachan); 1748 fdc_release_resources(fdc); 1749 mtx_destroy(&fdc->fdc_mtx); 1750 return (0); 1751 } 1752 1753 /* 1754 * Add a child device to the fdc controller. It will then be probed etc. 1755 */ 1756 device_t 1757 fdc_add_child(device_t dev, const char *name, int unit) 1758 { 1759 struct fdc_ivars *ivar; 1760 device_t child; 1761 1762 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT | M_ZERO); 1763 if (ivar == NULL) 1764 return (NULL); 1765 child = device_add_child(dev, name, unit); 1766 if (child == NULL) { 1767 free(ivar, M_DEVBUF); 1768 return (NULL); 1769 } 1770 device_set_ivars(child, ivar); 1771 ivar->fdunit = unit; 1772 ivar->fdtype = FDT_NONE; 1773 if (resource_disabled(name, unit)) 1774 device_disable(child); 1775 return (child); 1776 } 1777 1778 int 1779 fdc_attach(device_t dev) 1780 { 1781 struct fdc_data *fdc; 1782 int error; 1783 1784 fdc = device_get_softc(dev); 1785 fdc->fdc_dev = dev; 1786 error = fdc_initial_reset(dev, fdc); 1787 if (error) { 1788 device_printf(dev, "does not respond\n"); 1789 return (error); 1790 } 1791 error = bus_setup_intr(dev, fdc->res_irq, 1792 INTR_TYPE_BIO | INTR_ENTROPY | 1793 ((fdc->flags & FDC_NOFAST) ? INTR_MPSAFE : 0), 1794 ((fdc->flags & FDC_NOFAST) ? NULL : fdc_intr_fast), 1795 ((fdc->flags & FDC_NOFAST) ? fdc_intr : NULL), 1796 fdc, &fdc->fdc_intr); 1797 if (error) { 1798 device_printf(dev, "cannot setup interrupt\n"); 1799 return (error); 1800 } 1801 if (!(fdc->flags & FDC_NODMA)) { 1802 error = isa_dma_acquire(fdc->dmachan); 1803 if (!error) { 1804 error = isa_dma_init(fdc->dmachan, 1805 MAX_BYTES_PER_CYL, M_WAITOK); 1806 if (error) 1807 isa_dma_release(fdc->dmachan); 1808 } 1809 if (error) 1810 return (error); 1811 } 1812 fdc->fdcu = device_get_unit(dev); 1813 fdc->flags |= FDC_NEEDS_RESET; 1814 1815 mtx_init(&fdc->fdc_mtx, "fdc lock", NULL, MTX_DEF); 1816 1817 /* reset controller, turn motor off, clear fdout mirror reg */ 1818 fdout_wr(fdc, fdc->fdout = 0); 1819 bioq_init(&fdc->head); 1820 1821 kproc_create(fdc_thread, fdc, &fdc->fdc_thread, 0, 0, 1822 "fdc%d", device_get_unit(dev)); 1823 1824 settle = hz / 8; 1825 1826 return (0); 1827 } 1828 1829 int 1830 fdc_hints_probe(device_t dev) 1831 { 1832 const char *name, *dname; 1833 int i, error, dunit; 1834 1835 /* 1836 * Probe and attach any children. We should probably detect 1837 * devices from the BIOS unless overridden. 1838 */ 1839 name = device_get_nameunit(dev); 1840 i = 0; 1841 while ((resource_find_match(&i, &dname, &dunit, "at", name)) == 0) { 1842 resource_int_value(dname, dunit, "drive", &dunit); 1843 fdc_add_child(dev, dname, dunit); 1844 } 1845 1846 if ((error = bus_generic_attach(dev)) != 0) 1847 return (error); 1848 return (0); 1849 } 1850 1851 int 1852 fdc_print_child(device_t me, device_t child) 1853 { 1854 int retval = 0, flags; 1855 1856 retval += bus_print_child_header(me, child); 1857 retval += printf(" on %s drive %d", device_get_nameunit(me), 1858 fdc_get_fdunit(child)); 1859 if ((flags = device_get_flags(me)) != 0) 1860 retval += printf(" flags %#x", flags); 1861 retval += printf("\n"); 1862 1863 return (retval); 1864 } 1865 1866 /* 1867 * Configuration/initialization, per drive. 1868 */ 1869 static int 1870 fd_probe(device_t dev) 1871 { 1872 int i, unit; 1873 u_int st0, st3; 1874 struct fd_data *fd; 1875 struct fdc_data *fdc; 1876 int fdsu; 1877 int flags, type; 1878 1879 fdsu = fdc_get_fdunit(dev); 1880 fd = device_get_softc(dev); 1881 fdc = device_get_softc(device_get_parent(dev)); 1882 flags = device_get_flags(dev); 1883 1884 fd->dev = dev; 1885 fd->fdc = fdc; 1886 fd->fdsu = fdsu; 1887 unit = device_get_unit(dev); 1888 1889 /* Auto-probe if fdinfo is present, but always allow override. */ 1890 type = flags & FD_TYPEMASK; 1891 if (type == FDT_NONE && (type = fdc_get_fdtype(dev)) != FDT_NONE) { 1892 fd->type = type; 1893 goto done; 1894 } else { 1895 /* make sure fdautoselect() will be called */ 1896 fd->flags = FD_EMPTY; 1897 fd->type = type; 1898 } 1899 1900 #if (defined(__i386__) && !defined(PC98)) || defined(__amd64__) 1901 if (fd->type == FDT_NONE && (unit == 0 || unit == 1)) { 1902 /* Look up what the BIOS thinks we have. */ 1903 if (unit == 0) 1904 fd->type = (rtcin(RTC_FDISKETTE) & 0xf0) >> 4; 1905 else 1906 fd->type = rtcin(RTC_FDISKETTE) & 0x0f; 1907 if (fd->type == FDT_288M_1) 1908 fd->type = FDT_288M; 1909 } 1910 #endif /* __i386__ || __amd64__ */ 1911 /* is there a unit? */ 1912 if (fd->type == FDT_NONE) 1913 return (ENXIO); 1914 1915 /* 1916 mtx_lock(&fdc->fdc_mtx); 1917 */ 1918 /* select it */ 1919 fd_select(fd); 1920 fd_motor(fd, 1); 1921 fdc->fd = fd; 1922 fdc_reset(fdc); /* XXX reset, then unreset, etc. */ 1923 DELAY(1000000); /* 1 sec */ 1924 1925 if ((flags & FD_NO_PROBE) == 0) { 1926 /* If we're at track 0 first seek inwards. */ 1927 if ((fdc_sense_drive(fdc, &st3) == 0) && 1928 (st3 & NE7_ST3_T0)) { 1929 /* Seek some steps... */ 1930 if (fdc_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 1931 /* ...wait a moment... */ 1932 DELAY(300000); 1933 /* make ctrlr happy: */ 1934 fdc_sense_int(fdc, NULL, NULL); 1935 } 1936 } 1937 1938 for (i = 0; i < 2; i++) { 1939 /* 1940 * we must recalibrate twice, just in case the 1941 * heads have been beyond cylinder 76, since 1942 * most FDCs still barf when attempting to 1943 * recalibrate more than 77 steps 1944 */ 1945 /* go back to 0: */ 1946 if (fdc_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1947 /* a second being enough for full stroke seek*/ 1948 DELAY(i == 0 ? 1000000 : 300000); 1949 1950 /* anything responding? */ 1951 if (fdc_sense_int(fdc, &st0, NULL) == 0 && 1952 (st0 & NE7_ST0_EC) == 0) 1953 break; /* already probed succesfully */ 1954 } 1955 } 1956 } 1957 1958 fd_motor(fd, 0); 1959 fdc->fd = NULL; 1960 /* 1961 mtx_unlock(&fdc->fdc_mtx); 1962 */ 1963 1964 if ((flags & FD_NO_PROBE) == 0 && 1965 (st0 & NE7_ST0_EC) != 0) /* no track 0 -> no drive present */ 1966 return (ENXIO); 1967 1968 done: 1969 1970 switch (fd->type) { 1971 case FDT_12M: 1972 device_set_desc(dev, "1200-KB 5.25\" drive"); 1973 break; 1974 case FDT_144M: 1975 device_set_desc(dev, "1440-KB 3.5\" drive"); 1976 break; 1977 case FDT_288M: 1978 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 1979 break; 1980 case FDT_360K: 1981 device_set_desc(dev, "360-KB 5.25\" drive"); 1982 break; 1983 case FDT_720K: 1984 device_set_desc(dev, "720-KB 3.5\" drive"); 1985 break; 1986 default: 1987 return (ENXIO); 1988 } 1989 fd->track = FD_NO_TRACK; 1990 fd->fdc = fdc; 1991 fd->fdsu = fdsu; 1992 fd->options = 0; 1993 callout_init_mtx(&fd->toffhandle, &fd->fdc->fdc_mtx, 0); 1994 1995 /* initialize densities for subdevices */ 1996 fdsettype(fd, fd_native_types[fd->type]); 1997 return (0); 1998 } 1999 2000 /* 2001 * We have to do this in a geom event because GEOM is not running 2002 * when fd_attach() is. 2003 * XXX: move fd_attach after geom like ata/scsi disks 2004 */ 2005 static void 2006 fd_attach2(void *arg, int flag) 2007 { 2008 struct fd_data *fd; 2009 2010 fd = arg; 2011 2012 fd->fd_geom = g_new_geomf(&g_fd_class, 2013 "fd%d", device_get_unit(fd->dev)); 2014 fd->fd_provider = g_new_providerf(fd->fd_geom, fd->fd_geom->name); 2015 fd->fd_geom->softc = fd; 2016 g_error_provider(fd->fd_provider, 0); 2017 } 2018 2019 static int 2020 fd_attach(device_t dev) 2021 { 2022 struct fd_data *fd; 2023 2024 fd = device_get_softc(dev); 2025 g_post_event(fd_attach2, fd, M_WAITOK, NULL); 2026 fd->flags |= FD_EMPTY; 2027 bioq_init(&fd->fd_bq); 2028 2029 return (0); 2030 } 2031 2032 static void 2033 fd_detach_geom(void *arg, int flag) 2034 { 2035 struct fd_data *fd = arg; 2036 2037 g_topology_assert(); 2038 g_wither_geom(fd->fd_geom, ENXIO); 2039 } 2040 2041 static int 2042 fd_detach(device_t dev) 2043 { 2044 struct fd_data *fd; 2045 2046 fd = device_get_softc(dev); 2047 g_waitfor_event(fd_detach_geom, fd, M_WAITOK, NULL); 2048 while (device_get_state(dev) == DS_BUSY) 2049 tsleep(fd, PZERO, "fdd", hz/10); 2050 callout_drain(&fd->toffhandle); 2051 2052 return (0); 2053 } 2054 2055 static device_method_t fd_methods[] = { 2056 /* Device interface */ 2057 DEVMETHOD(device_probe, fd_probe), 2058 DEVMETHOD(device_attach, fd_attach), 2059 DEVMETHOD(device_detach, fd_detach), 2060 DEVMETHOD(device_shutdown, bus_generic_shutdown), 2061 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 2062 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 2063 { 0, 0 } 2064 }; 2065 2066 static driver_t fd_driver = { 2067 "fd", 2068 fd_methods, 2069 sizeof(struct fd_data) 2070 }; 2071 2072 static int 2073 fdc_modevent(module_t mod, int type, void *data) 2074 { 2075 2076 return (g_modevent(NULL, type, &g_fd_class)); 2077 } 2078 2079 DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, fdc_modevent, 0); 2080