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 138static struct fd_type fd_searchlist_360k[] = { 139 { FDF_5_360 }, 140 { 0 } 141}; 142 143static struct fd_type fd_searchlist_12m[] = { 144 { FDF_5_1200 | FL_AUTO }, 145 { FDF_5_360 | FL_2STEP | FL_AUTO}, 146 { 0 } 147}; 148 149static struct fd_type fd_searchlist_720k[] = { 150 { FDF_3_720 }, 151 { 0 } 152}; 153 154static struct fd_type fd_searchlist_144m[] = { 155 { FDF_3_1440 | FL_AUTO}, 156 { FDF_3_720 | FL_AUTO}, 157 { 0 } 158}; 159 160static 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 */ 172static 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 */ 236struct 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 265static driver_intr_t fdc_intr; 266static driver_filter_t fdc_intr_fast; 267static void fdc_reset(struct fdc_data *); 268static int fd_probe_disk(struct fd_data *, int *); 269 270static SYSCTL_NODE(_debug, OID_AUTO, fdc, CTLFLAG_RW, 0, "fdc driver"); 271 272static int fifo_threshold = 8; 273SYSCTL_INT(_debug_fdc, OID_AUTO, fifo, CTLFLAG_RW, &fifo_threshold, 0, 274 "FIFO threshold setting"); 275 276static int debugflags = 0; 277SYSCTL_INT(_debug_fdc, OID_AUTO, debugflags, CTLFLAG_RW, &debugflags, 0, 278 "Debug flags"); 279 280static int retries = 10; 281SYSCTL_INT(_debug_fdc, OID_AUTO, retries, CTLFLAG_RW, &retries, 0, 282 "Number of retries to attempt"); 283 284static int spec1 = 0xaf; 285SYSCTL_INT(_debug_fdc, OID_AUTO, spec1, CTLFLAG_RW, &spec1, 0, 286 "Specification byte one (step-rate + head unload)"); 287 288static int spec2 = 0x10; 289SYSCTL_INT(_debug_fdc, OID_AUTO, spec2, CTLFLAG_RW, &spec2, 0, 290 "Specification byte two (head load time + no-dma)"); 291 292static int settle; 293SYSCTL_INT(_debug_fdc, OID_AUTO, settle, CTLFLAG_RW, &settle, 0, 294 "Head settling time in sec/hz"); 295 296static void 297fdprinttype(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 306static void 307fdsettype(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 318fdregwr(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 325fdregrd(struct fdc_data *fdc, int reg) 326{ 327 328 return bus_space_read_1(fdc->iot, fdc->ioh[reg], fdc->ioff[reg]); 329} 330 331static void 332fdctl_wr(struct fdc_data *fdc, u_int8_t v) 333{ 334 335 fdregwr(fdc, FDCTL, v); 336} 337 338static void 339fdout_wr(struct fdc_data *fdc, u_int8_t v) 340{ 341 342 fdregwr(fdc, FDOUT, v); 343} 344 345static u_int8_t 346fdsts_rd(struct fdc_data *fdc) 347{ 348 349 return fdregrd(fdc, FDSTS); 350} 351 352static void 353fddsr_wr(struct fdc_data *fdc, u_int8_t v) 354{ 355 356 fdregwr(fdc, FDDSR, v); 357} 358 359static void 360fddata_wr(struct fdc_data *fdc, u_int8_t v) 361{ 362 363 fdregwr(fdc, FDDATA, v); 364} 365 366static u_int8_t 367fddata_rd(struct fdc_data *fdc) 368{ 369 370 return fdregrd(fdc, FDDATA); 371} 372 373static u_int8_t 374fdin_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 */ 384static void 385fdbcdr_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 392static int 393fdc_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 */ 415static int 416fdc_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 437static int 438fdc_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 */ 465static int 466fdc_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 505static void 506fdc_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 * breaks 2step! */ 533 0x10 | /* Polling disabled */ 534 (fifo_threshold - 1), /* Fifo threshold */ 535 0x00, /* Precomp track */ 536 0)) 537 device_printf(fdc->fdc_dev, 538 " CONFIGURE failed in reset\n"); 539 if (debugflags & 1) { 540 if (fdc_cmd(fdc, 1, 541 I8207X_DUMPREG, 542 10, &r[0], &r[1], &r[2], &r[3], &r[4], 543 &r[5], &r[6], &r[7], &r[8], &r[9])) 544 device_printf(fdc->fdc_dev, 545 " DUMPREG failed in reset\n"); 546 for (i = 0; i < 10; i++) 547 printf(" %02x", r[i]); 548 printf("\n"); 549 } 550 } 551} 552 553static int 554fdc_sense_drive(struct fdc_data *fdc, int *st3p) 555{ 556 int st3; 557 558 if (fdc_cmd(fdc, 2, NE7CMD_SENSED, fdc->fd->fdsu, 1, &st3)) 559 return (fdc_err(fdc, "Sense Drive Status failed\n")); 560 if (st3p) 561 *st3p = st3; 562 return (0); 563} 564 565static int 566fdc_sense_int(struct fdc_data *fdc, int *st0p, int *cylp) 567{ 568 int cyl, st0, ret; 569 570 ret = fdc_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); 571 if (ret) { 572 (void)fdc_err(fdc, "sense intr err reading stat reg 0\n"); 573 return (ret); 574 } 575 576 if (st0p) 577 *st0p = st0; 578 579 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { 580 /* 581 * There doesn't seem to have been an interrupt. 582 */ 583 return (FD_NOT_VALID); 584 } 585 586 if (fdc_in(fdc, &cyl) < 0) 587 return fdc_err(fdc, "can't get cyl num\n"); 588 589 if (cylp) 590 *cylp = cyl; 591 592 return (0); 593} 594 595static int 596fdc_read_status(struct fdc_data *fdc) 597{ 598 int i, ret, status; 599 600 for (i = ret = 0; i < 7; i++) { 601 ret = fdc_in(fdc, &status); 602 fdc->status[i] = status; 603 if (ret != 0) 604 break; 605 } 606 607 if (ret == 0) 608 fdc->flags |= FDC_STAT_VALID; 609 else 610 fdc->flags &= ~FDC_STAT_VALID; 611 612 return ret; 613} 614 615/* 616 * Select this drive 617 */ 618static void 619fd_select(struct fd_data *fd) 620{ 621 struct fdc_data *fdc; 622 623 /* XXX: lock controller */ 624 fdc = fd->fdc; 625 fdc->fdout &= ~FDO_FDSEL; 626 fdc->fdout |= FDO_FDMAEN | FDO_FRST | fd->fdsu; 627 fdout_wr(fdc, fdc->fdout); 628} 629 630static void 631fd_turnon(void *arg) 632{ 633 struct fd_data *fd; 634 struct bio *bp; 635 int once; 636 637 fd = arg; 638 mtx_assert(&fd->fdc->fdc_mtx, MA_OWNED); 639 fd->flags &= ~FD_MOTORWAIT; 640 fd->flags |= FD_MOTOR; 641 once = 0; 642 for (;;) { 643 bp = bioq_takefirst(&fd->fd_bq); 644 if (bp == NULL) 645 break; 646 bioq_disksort(&fd->fdc->head, bp); 647 once = 1; 648 } 649 if (once) 650 wakeup(&fd->fdc->head); 651} 652 653static void 654fd_motor(struct fd_data *fd, int turnon) 655{ 656 struct fdc_data *fdc; 657 658 fdc = fd->fdc; 659/* 660 mtx_assert(&fdc->fdc_mtx, MA_OWNED); 661*/ 662 if (turnon) { 663 fd->flags |= FD_MOTORWAIT; 664 fdc->fdout |= (FDO_MOEN0 << fd->fdsu); 665 callout_reset(&fd->toffhandle, hz, fd_turnon, fd); 666 } else { 667 callout_stop(&fd->toffhandle); 668 fd->flags &= ~(FD_MOTOR|FD_MOTORWAIT); 669 fdc->fdout &= ~(FDO_MOEN0 << fd->fdsu); 670 } 671 fdout_wr(fdc, fdc->fdout); 672} 673 674static void 675fd_turnoff(void *xfd) 676{ 677 struct fd_data *fd = xfd; 678 679 mtx_assert(&fd->fdc->fdc_mtx, MA_OWNED); 680 fd_motor(fd, 0); 681} 682 683/* 684 * fdc_intr - wake up the worker thread. 685 */ 686 687static void 688fdc_intr(void *arg) 689{ 690 691 wakeup(arg); 692} 693 694static int 695fdc_intr_fast(void *arg) 696{ 697 698 wakeup(arg); 699 return(FILTER_HANDLED); 700} 701 702/* 703 * fdc_pio(): perform programmed IO read/write for YE PCMCIA floppy. 704 */ 705static void 706fdc_pio(struct fdc_data *fdc) 707{ 708 u_char *cptr; 709 struct bio *bp; 710 u_int count; 711 712 bp = fdc->bp; 713 cptr = fdc->fd->fd_ioptr; 714 count = fdc->fd->fd_iosize; 715 716 if (bp->bio_cmd == BIO_READ) { 717 fdbcdr_wr(fdc, 0, count); 718 bus_space_read_multi_1(fdc->iot, fdc->ioh[FD_YE_DATAPORT], 719 fdc->ioff[FD_YE_DATAPORT], cptr, count); 720 } else { 721 bus_space_write_multi_1(fdc->iot, fdc->ioh[FD_YE_DATAPORT], 722 fdc->ioff[FD_YE_DATAPORT], cptr, count); 723 fdbcdr_wr(fdc, 0, count); /* needed? */ 724 } 725} 726 727static int 728fdc_biodone(struct fdc_data *fdc, int error) 729{ 730 struct fd_data *fd; 731 struct bio *bp; 732 733 fd = fdc->fd; 734 bp = fdc->bp; 735 736 mtx_lock(&fdc->fdc_mtx); 737 if (--fd->fd_iocount == 0) 738 callout_reset(&fd->toffhandle, 4 * hz, fd_turnoff, fd); 739 fdc->bp = NULL; 740 fdc->fd = NULL; 741 mtx_unlock(&fdc->fdc_mtx); 742 if (bp->bio_to != NULL) { 743 if ((debugflags & 2) && fd->fdc->retry > 0) 744 printf("retries: %d\n", fd->fdc->retry); 745 g_io_deliver(bp, error); 746 return (0); 747 } 748 bp->bio_error = error; 749 bp->bio_flags |= BIO_DONE; 750 wakeup(bp); 751 return (0); 752} 753 754static int retry_line; 755 756static int 757fdc_worker(struct fdc_data *fdc) 758{ 759 struct fd_data *fd; 760 struct bio *bp; 761 int i, nsect; 762 int st0, st3, cyl, mfm, steptrac, cylinder, descyl, sec; 763 int head; 764 int override_error; 765 static int need_recal; 766 struct fdc_readid *idp; 767 struct fd_formb *finfo; 768 769 override_error = 0; 770 771 /* Have we exhausted our retries ? */ 772 bp = fdc->bp; 773 fd = fdc->fd; 774 if (bp != NULL && 775 (fdc->retry >= retries || (fd->options & FDOPT_NORETRY))) { 776 if ((debugflags & 4)) 777 printf("Too many retries (EIO)\n"); 778 if (fdc->flags & FDC_NEEDS_RESET) { 779 mtx_lock(&fdc->fdc_mtx); 780 fd->flags |= FD_EMPTY; 781 mtx_unlock(&fdc->fdc_mtx); 782 } 783 return (fdc_biodone(fdc, EIO)); 784 } 785 786 /* Disable ISADMA if we bailed while it was active */ 787 if (fd != NULL && (fd->flags & FD_ISADMA)) { 788 isa_dmadone( 789 bp->bio_cmd & BIO_READ ? ISADMA_READ : ISADMA_WRITE, 790 fd->fd_ioptr, fd->fd_iosize, fdc->dmachan); 791 mtx_lock(&fdc->fdc_mtx); 792 fd->flags &= ~FD_ISADMA; 793 mtx_unlock(&fdc->fdc_mtx); 794 } 795 796 /* Unwedge the controller ? */ 797 if (fdc->flags & FDC_NEEDS_RESET) { 798 fdc->flags &= ~FDC_NEEDS_RESET; 799 fdc_reset(fdc); 800 tsleep(fdc, PRIBIO, "fdcrst", hz); 801 /* Discard results */ 802 for (i = 0; i < 4; i++) 803 fdc_sense_int(fdc, &st0, &cyl); 804 /* All drives must recal */ 805 need_recal = 0xf; 806 } 807 808 /* Pick up a request, if need be wait for it */ 809 if (fdc->bp == NULL) { 810 mtx_lock(&fdc->fdc_mtx); 811 do { 812 fdc->bp = bioq_takefirst(&fdc->head); 813 if (fdc->bp == NULL) 814 msleep(&fdc->head, &fdc->fdc_mtx, 815 PRIBIO, "-", hz); 816 } while (fdc->bp == NULL && 817 (fdc->flags & FDC_KTHREAD_EXIT) == 0); 818 mtx_unlock(&fdc->fdc_mtx); 819 820 if (fdc->bp == NULL) 821 /* 822 * Nothing to do, worker thread has been 823 * requested to stop. 824 */ 825 return (0); 826 827 bp = fdc->bp; 828 fd = fdc->fd = bp->bio_driver1; 829 fdc->retry = 0; 830 fd->fd_ioptr = bp->bio_data; 831 if (bp->bio_cmd & BIO_FMT) { 832 i = offsetof(struct fd_formb, fd_formb_cylno(0)); 833 fd->fd_ioptr += i; 834 fd->fd_iosize = bp->bio_length - i; 835 } 836 } 837 838 /* Select drive, setup params */ 839 fd_select(fd); 840 if (fdc->fdct == FDC_ENHANCED) 841 fddsr_wr(fdc, fd->ft->trans); 842 else 843 fdctl_wr(fdc, fd->ft->trans); 844 845 if (bp->bio_cmd & BIO_PROBE) { 846 if ((!(device_get_flags(fd->dev) & FD_NO_CHLINE) && 847 !(fdin_rd(fdc) & FDI_DCHG) && 848 !(fd->flags & FD_EMPTY)) || 849 fd_probe_disk(fd, &need_recal) == 0) 850 return (fdc_biodone(fdc, 0)); 851 return (1); 852 } 853 854 /* 855 * If we are dead just flush the requests 856 */ 857 if (fd->flags & FD_EMPTY) 858 return (fdc_biodone(fdc, ENXIO)); 859 860 /* Check if we lost our media */ 861 if (fdin_rd(fdc) & FDI_DCHG) { 862 if (debugflags & 0x40) 863 printf("Lost disk\n"); 864 mtx_lock(&fdc->fdc_mtx); 865 fd->flags |= FD_EMPTY; 866 fd->flags |= FD_NEWDISK; 867 mtx_unlock(&fdc->fdc_mtx); 868 g_topology_lock(); 869 g_orphan_provider(fd->fd_provider, ENXIO); 870 fd->fd_provider->flags |= G_PF_WITHER; 871 fd->fd_provider = 872 g_new_providerf(fd->fd_geom, "%s", fd->fd_geom->name); 873 g_error_provider(fd->fd_provider, 0); 874 g_topology_unlock(); 875 return (fdc_biodone(fdc, ENXIO)); 876 } 877 878 /* Check if the floppy is write-protected */ 879 if(bp->bio_cmd & (BIO_FMT | BIO_WRITE)) { 880 retry_line = __LINE__; 881 if(fdc_sense_drive(fdc, &st3) != 0) 882 return (1); 883 if(st3 & NE7_ST3_WP) 884 return (fdc_biodone(fdc, EROFS)); 885 } 886 887 mfm = (fd->ft->flags & FL_MFM)? NE7CMD_MFM: 0; 888 steptrac = (fd->ft->flags & FL_2STEP)? 2: 1; 889 i = fd->ft->sectrac * fd->ft->heads; 890 cylinder = bp->bio_pblkno / i; 891 descyl = cylinder * steptrac; 892 sec = bp->bio_pblkno % i; 893 nsect = i - sec; 894 head = sec / fd->ft->sectrac; 895 sec = sec % fd->ft->sectrac + 1; 896 897 /* If everything is going swimmingly, use multisector xfer */ 898 if (fdc->retry == 0 && bp->bio_cmd & (BIO_READ|BIO_WRITE)) { 899 fd->fd_iosize = imin(nsect * fd->sectorsize, bp->bio_resid); 900 nsect = fd->fd_iosize / fd->sectorsize; 901 } else if (bp->bio_cmd & (BIO_READ|BIO_WRITE)) { 902 fd->fd_iosize = fd->sectorsize; 903 nsect = 1; 904 } 905 906 /* Do RECAL if we need to or are going to track zero anyway */ 907 if ((need_recal & (1 << fd->fdsu)) || 908 (cylinder == 0 && fd->track != 0) || 909 fdc->retry > 2) { 910 retry_line = __LINE__; 911 if (fdc_cmd(fdc, 2, NE7CMD_RECAL, fd->fdsu, 0)) 912 return (1); 913 tsleep(fdc, PRIBIO, "fdrecal", hz); 914 retry_line = __LINE__; 915 if (fdc_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 916 return (1); /* XXX */ 917 retry_line = __LINE__; 918 if ((st0 & 0xc0) || cyl != 0) 919 return (1); 920 need_recal &= ~(1 << fd->fdsu); 921 fd->track = 0; 922 /* let the heads settle */ 923 if (settle) 924 tsleep(fdc->fd, PRIBIO, "fdhdstl", settle); 925 } 926 927 /* 928 * SEEK to where we want to be 929 */ 930 if (cylinder != fd->track) { 931 retry_line = __LINE__; 932 if (fdc_cmd(fdc, 3, NE7CMD_SEEK, fd->fdsu, descyl, 0)) 933 return (1); 934 tsleep(fdc, PRIBIO, "fdseek", hz); 935 retry_line = __LINE__; 936 if (fdc_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 937 return (1); /* XXX */ 938 retry_line = __LINE__; 939 if ((st0 & 0xc0) || cyl != descyl) { 940 need_recal |= (1 << fd->fdsu); 941 return (1); 942 } 943 /* let the heads settle */ 944 if (settle) 945 tsleep(fdc->fd, PRIBIO, "fdhdstl", settle); 946 } 947 fd->track = cylinder; 948 949 if (debugflags & 8) 950 printf("op %x bn %ju siz %u ptr %p retry %d\n", 951 bp->bio_cmd, bp->bio_pblkno, fd->fd_iosize, 952 fd->fd_ioptr, fdc->retry); 953 954 /* Setup ISADMA if we need it and have it */ 955 if ((bp->bio_cmd & (BIO_READ|BIO_WRITE|BIO_FMT)) 956 && !(fdc->flags & FDC_NODMA)) { 957 isa_dmastart( 958 bp->bio_cmd & BIO_READ ? ISADMA_READ : ISADMA_WRITE, 959 fd->fd_ioptr, fd->fd_iosize, fdc->dmachan); 960 mtx_lock(&fdc->fdc_mtx); 961 fd->flags |= FD_ISADMA; 962 mtx_unlock(&fdc->fdc_mtx); 963 } 964 965 /* Do PIO if we have to */ 966 if (fdc->flags & FDC_NODMA) { 967 if (bp->bio_cmd & (BIO_READ|BIO_WRITE|BIO_FMT)) 968 fdbcdr_wr(fdc, 1, fd->fd_iosize); 969 if (bp->bio_cmd & (BIO_WRITE|BIO_FMT)) 970 fdc_pio(fdc); 971 } 972 973 switch(bp->bio_cmd) { 974 case BIO_FMT: 975 /* formatting */ 976 finfo = (struct fd_formb *)bp->bio_data; 977 retry_line = __LINE__; 978 if (fdc_cmd(fdc, 6, 979 NE7CMD_FORMAT | mfm, 980 head << 2 | fd->fdsu, 981 finfo->fd_formb_secshift, 982 finfo->fd_formb_nsecs, 983 finfo->fd_formb_gaplen, 984 finfo->fd_formb_fillbyte, 0)) 985 return (1); 986 break; 987 case BIO_RDID: 988 retry_line = __LINE__; 989 if (fdc_cmd(fdc, 2, 990 NE7CMD_READID | mfm, 991 head << 2 | fd->fdsu, 0)) 992 return (1); 993 break; 994 case BIO_READ: 995 retry_line = __LINE__; 996 if (fdc_cmd(fdc, 9, 997 NE7CMD_READ | NE7CMD_SK | mfm | NE7CMD_MT, 998 head << 2 | fd->fdsu, /* head & unit */ 999 fd->track, /* track */ 1000 head, /* head */ 1001 sec, /* sector + 1 */ 1002 fd->ft->secsize, /* sector size */ 1003 fd->ft->sectrac, /* sectors/track */ 1004 fd->ft->gap, /* gap size */ 1005 fd->ft->datalen, /* data length */ 1006 0)) 1007 return (1); 1008 break; 1009 case BIO_WRITE: 1010 retry_line = __LINE__; 1011 if (fdc_cmd(fdc, 9, 1012 NE7CMD_WRITE | mfm | NE7CMD_MT, 1013 head << 2 | fd->fdsu, /* head & unit */ 1014 fd->track, /* track */ 1015 head, /* head */ 1016 sec, /* sector + 1 */ 1017 fd->ft->secsize, /* sector size */ 1018 fd->ft->sectrac, /* sectors/track */ 1019 fd->ft->gap, /* gap size */ 1020 fd->ft->datalen, /* data length */ 1021 0)) 1022 return (1); 1023 break; 1024 default: 1025 KASSERT(0 == 1, ("Wrong bio_cmd %x\n", bp->bio_cmd)); 1026 } 1027 1028 /* Wait for interrupt */ 1029 i = tsleep(fdc, PRIBIO, "fddata", hz); 1030 1031 /* PIO if the read looks good */ 1032 if (i == 0 && (fdc->flags & FDC_NODMA) && (bp->bio_cmd & BIO_READ)) 1033 fdc_pio(fdc); 1034 1035 /* Finish DMA */ 1036 if (fd->flags & FD_ISADMA) { 1037 isa_dmadone( 1038 bp->bio_cmd & BIO_READ ? ISADMA_READ : ISADMA_WRITE, 1039 fd->fd_ioptr, fd->fd_iosize, fdc->dmachan); 1040 mtx_lock(&fdc->fdc_mtx); 1041 fd->flags &= ~FD_ISADMA; 1042 mtx_unlock(&fdc->fdc_mtx); 1043 } 1044 1045 if (i != 0) { 1046 /* 1047 * Timeout. 1048 * 1049 * Due to IBM's brain-dead design, the FDC has a faked ready 1050 * signal, hardwired to ready == true. Thus, any command 1051 * issued if there's no diskette in the drive will _never_ 1052 * complete, and must be aborted by resetting the FDC. 1053 * Many thanks, Big Blue! 1054 */ 1055 retry_line = __LINE__; 1056 fdc->flags |= FDC_NEEDS_RESET; 1057 return (1); 1058 } 1059 1060 retry_line = __LINE__; 1061 if (fdc_read_status(fdc)) 1062 return (1); 1063 1064 if (debugflags & 0x10) 1065 printf(" -> %x %x %x %x\n", 1066 fdc->status[0], fdc->status[1], 1067 fdc->status[2], fdc->status[3]); 1068 1069 st0 = fdc->status[0] & NE7_ST0_IC; 1070 if (st0 != 0) { 1071 retry_line = __LINE__; 1072 if (st0 == NE7_ST0_IC_AT && fdc->status[1] & NE7_ST1_OR) { 1073 /* 1074 * DMA overrun. Someone hogged the bus and 1075 * didn't release it in time for the next 1076 * FDC transfer. 1077 */ 1078 return (1); 1079 } 1080 retry_line = __LINE__; 1081 if(st0 == NE7_ST0_IC_IV) { 1082 fdc->flags |= FDC_NEEDS_RESET; 1083 return (1); 1084 } 1085 retry_line = __LINE__; 1086 if(st0 == NE7_ST0_IC_AT && fdc->status[2] & NE7_ST2_WC) { 1087 need_recal |= (1 << fd->fdsu); 1088 return (1); 1089 } 1090 if (debugflags & 0x20) { 1091 printf("status %02x %02x %02x %02x %02x %02x\n", 1092 fdc->status[0], fdc->status[1], fdc->status[2], 1093 fdc->status[3], fdc->status[4], fdc->status[5]); 1094 } 1095 retry_line = __LINE__; 1096 if (fd->options & FDOPT_NOERROR) 1097 override_error = 1; 1098 else 1099 return (1); 1100 } 1101 /* All OK */ 1102 switch(bp->bio_cmd) { 1103 case BIO_RDID: 1104 /* copy out ID field contents */ 1105 idp = (struct fdc_readid *)bp->bio_data; 1106 idp->cyl = fdc->status[3]; 1107 idp->head = fdc->status[4]; 1108 idp->sec = fdc->status[5]; 1109 idp->secshift = fdc->status[6]; 1110 if (debugflags & 0x40) 1111 printf("c %d h %d s %d z %d\n", 1112 idp->cyl, idp->head, idp->sec, idp->secshift); 1113 break; 1114 case BIO_READ: 1115 case BIO_WRITE: 1116 bp->bio_pblkno += nsect; 1117 bp->bio_resid -= fd->fd_iosize; 1118 bp->bio_completed += fd->fd_iosize; 1119 fd->fd_ioptr += fd->fd_iosize; 1120 if (override_error) { 1121 if ((debugflags & 4)) 1122 printf("FDOPT_NOERROR: returning bad data\n"); 1123 } else { 1124 /* Since we managed to get something done, 1125 * reset the retry */ 1126 fdc->retry = 0; 1127 if (bp->bio_resid > 0) 1128 return (0); 1129 } 1130 break; 1131 case BIO_FMT: 1132 break; 1133 } 1134 return (fdc_biodone(fdc, 0)); 1135} 1136 1137static void 1138fdc_thread(void *arg) 1139{ 1140 struct fdc_data *fdc; 1141 1142 fdc = arg; 1143 int i; 1144 1145 mtx_lock(&fdc->fdc_mtx); 1146 fdc->flags |= FDC_KTHREAD_ALIVE; 1147 while ((fdc->flags & FDC_KTHREAD_EXIT) == 0) { 1148 mtx_unlock(&fdc->fdc_mtx); 1149 i = fdc_worker(fdc); 1150 if (i && debugflags & 0x20) { 1151 if (fdc->bp != NULL) { 1152 g_print_bio(fdc->bp); 1153 printf("\n"); 1154 } 1155 printf("Retry line %d\n", retry_line); 1156 } 1157 fdc->retry += i; 1158 mtx_lock(&fdc->fdc_mtx); 1159 } 1160 fdc->flags &= ~(FDC_KTHREAD_EXIT | FDC_KTHREAD_ALIVE); 1161 mtx_unlock(&fdc->fdc_mtx); 1162 1163 kproc_exit(0); 1164} 1165 1166/* 1167 * Enqueue a request. 1168 */ 1169static void 1170fd_enqueue(struct fd_data *fd, struct bio *bp) 1171{ 1172 struct fdc_data *fdc; 1173 int call; 1174 1175 call = 0; 1176 fdc = fd->fdc; 1177 mtx_lock(&fdc->fdc_mtx); 1178 /* If we go from idle, cancel motor turnoff */ 1179 if (fd->fd_iocount++ == 0) 1180 callout_stop(&fd->toffhandle); 1181 if (fd->flags & FD_MOTOR) { 1182 /* The motor is on, send it directly to the controller */ 1183 bioq_disksort(&fdc->head, bp); 1184 wakeup(&fdc->head); 1185 } else { 1186 /* Queue it on the drive until the motor has started */ 1187 bioq_insert_tail(&fd->fd_bq, bp); 1188 if (!(fd->flags & FD_MOTORWAIT)) 1189 fd_motor(fd, 1); 1190 } 1191 mtx_unlock(&fdc->fdc_mtx); 1192} 1193 1194/* 1195 * Try to find out if we have a disk in the drive. 1196 */ 1197static int 1198fd_probe_disk(struct fd_data *fd, int *recal) 1199{ 1200 struct fdc_data *fdc; 1201 int st0, st3, cyl; 1202 int oopts, ret; 1203 1204 fdc = fd->fdc; 1205 oopts = fd->options; 1206 fd->options |= FDOPT_NOERRLOG | FDOPT_NORETRY; 1207 ret = 1; 1208 1209 /* 1210 * First recal, then seek to cyl#1, this clears the old condition on 1211 * the disk change line so we can examine it for current status. 1212 */ 1213 if (debugflags & 0x40) 1214 printf("New disk in probe\n"); 1215 mtx_lock(&fdc->fdc_mtx); 1216 fd->flags |= FD_NEWDISK; 1217 mtx_unlock(&fdc->fdc_mtx); 1218 if (fdc_cmd(fdc, 2, NE7CMD_RECAL, fd->fdsu, 0)) 1219 goto done; 1220 tsleep(fdc, PRIBIO, "fdrecal", hz); 1221 if (fdc_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 1222 goto done; /* XXX */ 1223 if ((st0 & 0xc0) || cyl != 0) 1224 goto done; 1225 1226 /* Seek to track 1 */ 1227 if (fdc_cmd(fdc, 3, NE7CMD_SEEK, fd->fdsu, 1, 0)) 1228 goto done; 1229 tsleep(fdc, PRIBIO, "fdseek", hz); 1230 if (fdc_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 1231 goto done; /* XXX */ 1232 *recal |= (1 << fd->fdsu); 1233 if (fdin_rd(fdc) & FDI_DCHG) { 1234 if (debugflags & 0x40) 1235 printf("Empty in probe\n"); 1236 mtx_lock(&fdc->fdc_mtx); 1237 fd->flags |= FD_EMPTY; 1238 mtx_unlock(&fdc->fdc_mtx); 1239 } else { 1240 if (fdc_sense_drive(fdc, &st3) != 0) 1241 goto done; 1242 if (debugflags & 0x40) 1243 printf("Got disk in probe\n"); 1244 mtx_lock(&fdc->fdc_mtx); 1245 fd->flags &= ~FD_EMPTY; 1246 if (st3 & NE7_ST3_WP) 1247 fd->flags |= FD_WP; 1248 else 1249 fd->flags &= ~FD_WP; 1250 mtx_unlock(&fdc->fdc_mtx); 1251 } 1252 ret = 0; 1253 1254done: 1255 fd->options = oopts; 1256 return (ret); 1257} 1258 1259static int 1260fdmisccmd(struct fd_data *fd, u_int cmd, void *data) 1261{ 1262 struct bio *bp; 1263 struct fd_formb *finfo; 1264 struct fdc_readid *idfield; 1265 int error; 1266 1267 bp = malloc(sizeof(struct bio), M_TEMP, M_WAITOK | M_ZERO); 1268 1269 /* 1270 * Set up a bio request for fdstrategy(). bio_offset is faked 1271 * so that fdstrategy() will seek to the requested 1272 * cylinder, and use the desired head. 1273 */ 1274 bp->bio_cmd = cmd; 1275 if (cmd == BIO_FMT) { 1276 finfo = (struct fd_formb *)data; 1277 bp->bio_pblkno = 1278 (finfo->cyl * fd->ft->heads + finfo->head) * 1279 fd->ft->sectrac; 1280 bp->bio_length = sizeof *finfo; 1281 } else if (cmd == BIO_RDID) { 1282 idfield = (struct fdc_readid *)data; 1283 bp->bio_pblkno = 1284 (idfield->cyl * fd->ft->heads + idfield->head) * 1285 fd->ft->sectrac; 1286 bp->bio_length = sizeof(struct fdc_readid); 1287 } else if (cmd == BIO_PROBE) { 1288 /* nothing */ 1289 } else 1290 panic("wrong cmd in fdmisccmd()"); 1291 bp->bio_offset = bp->bio_pblkno * fd->sectorsize; 1292 bp->bio_data = data; 1293 bp->bio_driver1 = fd; 1294 bp->bio_flags = 0; 1295 1296 fd_enqueue(fd, bp); 1297 1298 do { 1299 tsleep(bp, PRIBIO, "fdwait", hz); 1300 } while (!(bp->bio_flags & BIO_DONE)); 1301 error = bp->bio_error; 1302 1303 free(bp, M_TEMP); 1304 return (error); 1305} 1306 1307/* 1308 * Try figuring out the density of the media present in our device. 1309 */ 1310static int 1311fdautoselect(struct fd_data *fd) 1312{ 1313 struct fd_type *fdtp; 1314 struct fdc_readid id; 1315 int oopts, rv; 1316 1317 if (!(fd->ft->flags & FL_AUTO)) 1318 return (0); 1319 1320 fdtp = fd_native_types[fd->type]; 1321 fdsettype(fd, fdtp); 1322 if (!(fd->ft->flags & FL_AUTO)) 1323 return (0); 1324 1325 /* 1326 * Try reading sector ID fields, first at cylinder 0, head 0, 1327 * then at cylinder 2, head N. We don't probe cylinder 1, 1328 * since for 5.25in DD media in a HD drive, there are no data 1329 * to read (2 step pulses per media cylinder required). For 1330 * two-sided media, the second probe always goes to head 1, so 1331 * we can tell them apart from single-sided media. As a 1332 * side-effect this means that single-sided media should be 1333 * mentioned in the search list after two-sided media of an 1334 * otherwise identical density. Media with a different number 1335 * of sectors per track but otherwise identical parameters 1336 * cannot be distinguished at all. 1337 * 1338 * If we successfully read an ID field on both cylinders where 1339 * the recorded values match our expectation, we are done. 1340 * Otherwise, we try the next density entry from the table. 1341 * 1342 * Stepping to cylinder 2 has the side-effect of clearing the 1343 * unit attention bit. 1344 */ 1345 oopts = fd->options; 1346 fd->options |= FDOPT_NOERRLOG | FDOPT_NORETRY; 1347 for (; fdtp->heads; fdtp++) { 1348 fdsettype(fd, fdtp); 1349 1350 id.cyl = id.head = 0; 1351 rv = fdmisccmd(fd, BIO_RDID, &id); 1352 if (rv != 0) 1353 continue; 1354 if (id.cyl != 0 || id.head != 0 || id.secshift != fdtp->secsize) 1355 continue; 1356 id.cyl = 2; 1357 id.head = fd->ft->heads - 1; 1358 rv = fdmisccmd(fd, BIO_RDID, &id); 1359 if (id.cyl != 2 || id.head != fdtp->heads - 1 || 1360 id.secshift != fdtp->secsize) 1361 continue; 1362 if (rv == 0) 1363 break; 1364 } 1365 1366 fd->options = oopts; 1367 if (fdtp->heads == 0) { 1368 if (debugflags & 0x40) 1369 device_printf(fd->dev, "autoselection failed\n"); 1370 fdsettype(fd, fd_native_types[fd->type]); 1371 return (-1); 1372 } else { 1373 if (debugflags & 0x40) { 1374 device_printf(fd->dev, 1375 "autoselected %d KB medium\n", fd->ft->size / 2); 1376 fdprinttype(fd->ft); 1377 } 1378 return (0); 1379 } 1380} 1381 1382/* 1383 * GEOM class implementation 1384 */ 1385 1386static g_access_t fd_access; 1387static g_start_t fd_start; 1388static g_ioctl_t fd_ioctl; 1389 1390struct g_class g_fd_class = { 1391 .name = "FD", 1392 .version = G_VERSION, 1393 .start = fd_start, 1394 .access = fd_access, 1395 .ioctl = fd_ioctl, 1396}; 1397 1398static int 1399fd_access(struct g_provider *pp, int r, int w, int e) 1400{ 1401 struct fd_data *fd; 1402 struct fdc_data *fdc; 1403 int ar, aw, ae; 1404 int busy; 1405 1406 fd = pp->geom->softc; 1407 fdc = fd->fdc; 1408 1409 /* 1410 * If our provider is withering, we can only get negative requests 1411 * and we don't want to even see them 1412 */ 1413 if (pp->flags & G_PF_WITHER) 1414 return (0); 1415 1416 ar = r + pp->acr; 1417 aw = w + pp->acw; 1418 ae = e + pp->ace; 1419 1420 if (ar == 0 && aw == 0 && ae == 0) { 1421 fd->options &= ~(FDOPT_NORETRY | FDOPT_NOERRLOG | FDOPT_NOERROR); 1422 device_unbusy(fd->dev); 1423 return (0); 1424 } 1425 1426 busy = 0; 1427 if (pp->acr == 0 && pp->acw == 0 && pp->ace == 0) { 1428 if (fdmisccmd(fd, BIO_PROBE, NULL)) 1429 return (ENXIO); 1430 if (fd->flags & FD_EMPTY) 1431 return (ENXIO); 1432 if (fd->flags & FD_NEWDISK) { 1433 if (fdautoselect(fd) != 0 && 1434 (device_get_flags(fd->dev) & FD_NO_CHLINE)) { 1435 mtx_lock(&fdc->fdc_mtx); 1436 fd->flags |= FD_EMPTY; 1437 mtx_unlock(&fdc->fdc_mtx); 1438 return (ENXIO); 1439 } 1440 mtx_lock(&fdc->fdc_mtx); 1441 fd->flags &= ~FD_NEWDISK; 1442 mtx_unlock(&fdc->fdc_mtx); 1443 } 1444 device_busy(fd->dev); 1445 busy = 1; 1446 } 1447 1448 if (w > 0 && (fd->flags & FD_WP)) { 1449 if (busy) 1450 device_unbusy(fd->dev); 1451 return (EROFS); 1452 } 1453 1454 pp->sectorsize = fd->sectorsize; 1455 pp->stripesize = fd->ft->heads * fd->ft->sectrac * fd->sectorsize; 1456 pp->mediasize = pp->stripesize * fd->ft->tracks; 1457 return (0); 1458} 1459 1460static void 1461fd_start(struct bio *bp) 1462{ 1463 struct fdc_data * fdc; 1464 struct fd_data * fd; 1465 1466 fd = bp->bio_to->geom->softc; 1467 fdc = fd->fdc; 1468 bp->bio_driver1 = fd; 1469 if (bp->bio_cmd & BIO_GETATTR) { 1470 if (g_handleattr_int(bp, "GEOM::fwsectors", fd->ft->sectrac)) 1471 return; 1472 if (g_handleattr_int(bp, "GEOM::fwheads", fd->ft->heads)) 1473 return; 1474 g_io_deliver(bp, ENOIOCTL); 1475 return; 1476 } 1477 if (!(bp->bio_cmd & (BIO_READ|BIO_WRITE))) { 1478 g_io_deliver(bp, EOPNOTSUPP); 1479 return; 1480 } 1481 bp->bio_pblkno = bp->bio_offset / fd->sectorsize; 1482 bp->bio_resid = bp->bio_length; 1483 fd_enqueue(fd, bp); 1484 return; 1485} 1486 1487static int 1488fd_ioctl(struct g_provider *pp, u_long cmd, void *data, int fflag, struct thread *td) 1489{ 1490 struct fd_data *fd; 1491 struct fdc_status *fsp; 1492 struct fdc_readid *rid; 1493 int error; 1494 1495 fd = pp->geom->softc; 1496 1497 switch (cmd) { 1498 case FD_GTYPE: /* get drive type */ 1499 *(struct fd_type *)data = *fd->ft; 1500 return (0); 1501 1502 case FD_STYPE: /* set drive type */ 1503 /* 1504 * Allow setting drive type temporarily iff 1505 * currently unset. Used for fdformat so any 1506 * user can set it, and then start formatting. 1507 */ 1508 fd->fts = *(struct fd_type *)data; 1509 if (fd->fts.sectrac) { 1510 /* XXX: check for rubbish */ 1511 fdsettype(fd, &fd->fts); 1512 } else { 1513 fdsettype(fd, fd_native_types[fd->type]); 1514 } 1515 if (debugflags & 0x40) 1516 fdprinttype(fd->ft); 1517 return (0); 1518 1519 case FD_GOPTS: /* get drive options */ 1520 *(int *)data = fd->options; 1521 return (0); 1522 1523 case FD_SOPTS: /* set drive options */ 1524 fd->options = *(int *)data; 1525 return (0); 1526 1527 case FD_CLRERR: 1528 error = priv_check(td, PRIV_DRIVER); 1529 if (error) 1530 return (error); 1531 fd->fdc->fdc_errs = 0; 1532 return (0); 1533 1534 case FD_GSTAT: 1535 fsp = (struct fdc_status *)data; 1536 if ((fd->fdc->flags & FDC_STAT_VALID) == 0) 1537 return (EINVAL); 1538 memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); 1539 return (0); 1540 1541 case FD_GDTYPE: 1542 *(enum fd_drivetype *)data = fd->type; 1543 return (0); 1544 1545 case FD_FORM: 1546 if (!(fflag & FWRITE)) 1547 return (EPERM); 1548 if (((struct fd_formb *)data)->format_version != 1549 FD_FORMAT_VERSION) 1550 return (EINVAL); /* wrong version of formatting prog */ 1551 error = fdmisccmd(fd, BIO_FMT, data); 1552 mtx_lock(&fd->fdc->fdc_mtx); 1553 fd->flags |= FD_NEWDISK; 1554 mtx_unlock(&fd->fdc->fdc_mtx); 1555 break; 1556 1557 case FD_READID: 1558 rid = (struct fdc_readid *)data; 1559 if (rid->cyl > 85 || rid->head > 1) 1560 return (EINVAL); 1561 error = fdmisccmd(fd, BIO_RDID, data); 1562 break; 1563 1564 case FIONBIO: 1565 case FIOASYNC: 1566 /* For backwards compat with old fd*(8) tools */ 1567 error = 0; 1568 break; 1569 1570 default: 1571 if (debugflags & 0x80) 1572 printf("Unknown ioctl %lx\n", cmd); 1573 error = ENOIOCTL; 1574 break; 1575 } 1576 return (error); 1577}; 1578 1579 1580 1581/* 1582 * Configuration/initialization stuff, per controller. 1583 */ 1584 1585devclass_t fdc_devclass; 1586static devclass_t fd_devclass; 1587 1588struct fdc_ivars { 1589 int fdunit; 1590 int fdtype; 1591}; 1592 1593void 1594fdc_release_resources(struct fdc_data *fdc) 1595{ 1596 device_t dev; 1597 struct resource *last; 1598 int i; 1599 1600 dev = fdc->fdc_dev; 1601 if (fdc->fdc_intr) 1602 bus_teardown_intr(dev, fdc->res_irq, fdc->fdc_intr); 1603 fdc->fdc_intr = NULL; 1604 if (fdc->res_irq != NULL) 1605 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 1606 fdc->res_irq); 1607 fdc->res_irq = NULL; 1608 last = NULL; 1609 for (i = 0; i < FDC_MAXREG; i++) { 1610 if (fdc->resio[i] != NULL && fdc->resio[i] != last) { 1611 bus_release_resource(dev, SYS_RES_IOPORT, 1612 fdc->ridio[i], fdc->resio[i]); 1613 last = fdc->resio[i]; 1614 fdc->resio[i] = NULL; 1615 } 1616 } 1617 if (fdc->res_drq != NULL) 1618 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 1619 fdc->res_drq); 1620 fdc->res_drq = NULL; 1621} 1622 1623int 1624fdc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 1625{ 1626 struct fdc_ivars *ivars = device_get_ivars(child); 1627 1628 switch (which) { 1629 case FDC_IVAR_FDUNIT: 1630 *result = ivars->fdunit; 1631 break; 1632 case FDC_IVAR_FDTYPE: 1633 *result = ivars->fdtype; 1634 break; 1635 default: 1636 return (ENOENT); 1637 } 1638 return (0); 1639} 1640 1641int 1642fdc_write_ivar(device_t dev, device_t child, int which, uintptr_t value) 1643{ 1644 struct fdc_ivars *ivars = device_get_ivars(child); 1645 1646 switch (which) { 1647 case FDC_IVAR_FDUNIT: 1648 ivars->fdunit = value; 1649 break; 1650 case FDC_IVAR_FDTYPE: 1651 ivars->fdtype = value; 1652 break; 1653 default: 1654 return (ENOENT); 1655 } 1656 return (0); 1657} 1658 1659int 1660fdc_initial_reset(device_t dev, struct fdc_data *fdc) 1661{ 1662 int ic_type, part_id; 1663 1664 /* 1665 * A status value of 0xff is very unlikely, but not theoretically 1666 * impossible, but it is far more likely to indicate an empty bus. 1667 */ 1668 if (fdsts_rd(fdc) == 0xff) 1669 return (ENXIO); 1670 1671 /* 1672 * Assert a reset to the floppy controller and check that the status 1673 * register goes to zero. 1674 */ 1675 fdout_wr(fdc, 0); 1676 fdout_wr(fdc, 0); 1677 if (fdsts_rd(fdc) != 0) 1678 return (ENXIO); 1679 1680 /* 1681 * Clear the reset and see it come ready. 1682 */ 1683 fdout_wr(fdc, FDO_FRST); 1684 DELAY(100); 1685 if (fdsts_rd(fdc) != 0x80) 1686 return (ENXIO); 1687 1688 /* Then, see if it can handle a command. */ 1689 if (fdc_cmd(fdc, 3, NE7CMD_SPECIFY, 0xaf, 0x1e, 0)) 1690 return (ENXIO); 1691 1692 /* 1693 * Try to identify the chip. 1694 * 1695 * The i8272 datasheet documents that unknown commands 1696 * will return ST0 as 0x80. The i8272 is supposedly identical 1697 * to the NEC765. 1698 * The i82077SL datasheet says 0x90 for the VERSION command, 1699 * and several "superio" chips emulate this. 1700 */ 1701 if (fdc_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type)) 1702 return (ENXIO); 1703 if (fdc_cmd(fdc, 1, 0x18, 1, &part_id)) 1704 return (ENXIO); 1705 if (bootverbose) 1706 device_printf(dev, 1707 "ic_type %02x part_id %02x\n", ic_type, part_id); 1708 switch (ic_type & 0xff) { 1709 case 0x80: 1710 device_set_desc(dev, "NEC 765 or clone"); 1711 fdc->fdct = FDC_NE765; 1712 break; 1713 case 0x81: 1714 case 0x90: 1715 device_set_desc(dev, 1716 "Enhanced floppy controller"); 1717 fdc->fdct = FDC_ENHANCED; 1718 break; 1719 default: 1720 device_set_desc(dev, "Generic floppy controller"); 1721 fdc->fdct = FDC_UNKNOWN; 1722 break; 1723 } 1724 return (0); 1725} 1726 1727int 1728fdc_detach(device_t dev) 1729{ 1730 struct fdc_data *fdc; 1731 int error; 1732 1733 fdc = device_get_softc(dev); 1734 1735 /* have our children detached first */ 1736 if ((error = bus_generic_detach(dev))) 1737 return (error); 1738 1739 if (fdc->fdc_intr) 1740 bus_teardown_intr(dev, fdc->res_irq, fdc->fdc_intr); 1741 fdc->fdc_intr = NULL; 1742 1743 /* kill worker thread */ 1744 mtx_lock(&fdc->fdc_mtx); 1745 fdc->flags |= FDC_KTHREAD_EXIT; 1746 wakeup(&fdc->head); 1747 while ((fdc->flags & FDC_KTHREAD_ALIVE) != 0) 1748 msleep(fdc->fdc_thread, &fdc->fdc_mtx, PRIBIO, "fdcdet", 0); 1749 mtx_unlock(&fdc->fdc_mtx); 1750 1751 /* reset controller, turn motor off */ 1752 fdout_wr(fdc, 0); 1753 1754 if (!(fdc->flags & FDC_NODMA)) 1755 isa_dma_release(fdc->dmachan); 1756 fdc_release_resources(fdc); 1757 mtx_destroy(&fdc->fdc_mtx); 1758 return (0); 1759} 1760 1761/* 1762 * Add a child device to the fdc controller. It will then be probed etc. 1763 */ 1764device_t 1765fdc_add_child(device_t dev, const char *name, int unit) 1766{ 1767 struct fdc_ivars *ivar; 1768 device_t child; 1769 1770 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT | M_ZERO); 1771 if (ivar == NULL) 1772 return (NULL); 1773 child = device_add_child(dev, name, unit); 1774 if (child == NULL) { 1775 free(ivar, M_DEVBUF); 1776 return (NULL); 1777 } 1778 device_set_ivars(child, ivar); 1779 ivar->fdunit = unit; 1780 ivar->fdtype = FDT_NONE; 1781 if (resource_disabled(name, unit)) 1782 device_disable(child); 1783 return (child); 1784} 1785 1786int 1787fdc_attach(device_t dev) 1788{ 1789 struct fdc_data *fdc; 1790 int error; 1791 1792 fdc = device_get_softc(dev); 1793 fdc->fdc_dev = dev; 1794 error = fdc_initial_reset(dev, fdc); 1795 if (error) { 1796 device_printf(dev, "does not respond\n"); 1797 return (error); 1798 } 1799 error = bus_setup_intr(dev, fdc->res_irq, 1800 INTR_TYPE_BIO | INTR_ENTROPY | 1801 ((fdc->flags & FDC_NOFAST) ? INTR_MPSAFE : 0), 1802 ((fdc->flags & FDC_NOFAST) ? NULL : fdc_intr_fast), 1803 ((fdc->flags & FDC_NOFAST) ? fdc_intr : NULL), 1804 fdc, &fdc->fdc_intr); 1805 if (error) { 1806 device_printf(dev, "cannot setup interrupt\n"); 1807 return (error); 1808 } 1809 if (!(fdc->flags & FDC_NODMA)) { 1810 error = isa_dma_acquire(fdc->dmachan); 1811 if (!error) { 1812 error = isa_dma_init(fdc->dmachan, 1813 MAX_BYTES_PER_CYL, M_WAITOK); 1814 if (error) 1815 isa_dma_release(fdc->dmachan); 1816 } 1817 if (error) 1818 return (error); 1819 } 1820 fdc->fdcu = device_get_unit(dev); 1821 fdc->flags |= FDC_NEEDS_RESET; 1822 1823 mtx_init(&fdc->fdc_mtx, "fdc lock", NULL, MTX_DEF); 1824 1825 /* reset controller, turn motor off, clear fdout mirror reg */ 1826 fdout_wr(fdc, fdc->fdout = 0); 1827 bioq_init(&fdc->head); 1828 1829 kproc_create(fdc_thread, fdc, &fdc->fdc_thread, 0, 0, 1830 "fdc%d", device_get_unit(dev)); 1831 1832 settle = hz / 8; 1833 1834 return (0); 1835} 1836 1837int 1838fdc_hints_probe(device_t dev) 1839{ 1840 const char *name, *dname; 1841 int i, error, dunit; 1842 1843 /* 1844 * Probe and attach any children. We should probably detect 1845 * devices from the BIOS unless overridden. 1846 */ 1847 name = device_get_nameunit(dev); 1848 i = 0; 1849 while ((resource_find_match(&i, &dname, &dunit, "at", name)) == 0) { 1850 resource_int_value(dname, dunit, "drive", &dunit); 1851 fdc_add_child(dev, dname, dunit); 1852 } 1853 1854 if ((error = bus_generic_attach(dev)) != 0) 1855 return (error); 1856 return (0); 1857} 1858 1859int 1860fdc_print_child(device_t me, device_t child) 1861{ 1862 int retval = 0, flags; 1863 1864 retval += bus_print_child_header(me, child); 1865 retval += printf(" on %s drive %d", device_get_nameunit(me), 1866 fdc_get_fdunit(child)); 1867 if ((flags = device_get_flags(me)) != 0) 1868 retval += printf(" flags %#x", flags); 1869 retval += printf("\n"); 1870 1871 return (retval); 1872} 1873 1874/* 1875 * Configuration/initialization, per drive. 1876 */ 1877static int 1878fd_probe(device_t dev) 1879{ 1880 int i, unit; 1881 u_int st0, st3; 1882 struct fd_data *fd; 1883 struct fdc_data *fdc; 1884 int fdsu; 1885 int flags, type; 1886 1887 fdsu = fdc_get_fdunit(dev); 1888 fd = device_get_softc(dev); 1889 fdc = device_get_softc(device_get_parent(dev)); 1890 flags = device_get_flags(dev); 1891 1892 fd->dev = dev; 1893 fd->fdc = fdc; 1894 fd->fdsu = fdsu; 1895 unit = device_get_unit(dev); 1896 1897 /* Auto-probe if fdinfo is present, but always allow override. */ 1898 type = flags & FD_TYPEMASK; 1899 if (type == FDT_NONE && (type = fdc_get_fdtype(dev)) != FDT_NONE) { 1900 fd->type = type; 1901 goto done; 1902 } else { 1903 /* make sure fdautoselect() will be called */ 1904 fd->flags = FD_EMPTY; 1905 fd->type = type; 1906 } 1907 1908#if (defined(__i386__) && !defined(PC98)) || defined(__amd64__) 1909 if (fd->type == FDT_NONE && (unit == 0 || unit == 1)) { 1910 /* Look up what the BIOS thinks we have. */ 1911 if (unit == 0) 1912 fd->type = (rtcin(RTC_FDISKETTE) & 0xf0) >> 4; 1913 else 1914 fd->type = rtcin(RTC_FDISKETTE) & 0x0f; 1915 if (fd->type == FDT_288M_1) 1916 fd->type = FDT_288M; 1917 } 1918#endif /* __i386__ || __amd64__ */ 1919 /* is there a unit? */ 1920 if (fd->type == FDT_NONE) 1921 return (ENXIO); 1922 1923/* 1924 mtx_lock(&fdc->fdc_mtx); 1925*/ 1926 /* select it */ 1927 fd_select(fd); 1928 fd_motor(fd, 1); 1929 fdc->fd = fd; 1930 fdc_reset(fdc); /* XXX reset, then unreset, etc. */ 1931 DELAY(1000000); /* 1 sec */ 1932 1933 if ((flags & FD_NO_PROBE) == 0) { 1934 /* If we're at track 0 first seek inwards. */ 1935 if ((fdc_sense_drive(fdc, &st3) == 0) && 1936 (st3 & NE7_ST3_T0)) { 1937 /* Seek some steps... */ 1938 if (fdc_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 1939 /* ...wait a moment... */ 1940 DELAY(300000); 1941 /* make ctrlr happy: */ 1942 fdc_sense_int(fdc, NULL, NULL); 1943 } 1944 } 1945 1946 for (i = 0; i < 2; i++) { 1947 /* 1948 * we must recalibrate twice, just in case the 1949 * heads have been beyond cylinder 76, since 1950 * most FDCs still barf when attempting to 1951 * recalibrate more than 77 steps 1952 */ 1953 /* go back to 0: */ 1954 if (fdc_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1955 /* a second being enough for full stroke seek*/ 1956 DELAY(i == 0 ? 1000000 : 300000); 1957 1958 /* anything responding? */ 1959 if (fdc_sense_int(fdc, &st0, NULL) == 0 && 1960 (st0 & NE7_ST0_EC) == 0) 1961 break; /* already probed succesfully */ 1962 } 1963 } 1964 } 1965 1966 fd_motor(fd, 0); 1967 fdc->fd = NULL; 1968/* 1969 mtx_unlock(&fdc->fdc_mtx); 1970*/ 1971 1972 if ((flags & FD_NO_PROBE) == 0 && 1973 (st0 & NE7_ST0_EC) != 0) /* no track 0 -> no drive present */ 1974 return (ENXIO); 1975 1976done: 1977 1978 switch (fd->type) { 1979 case FDT_12M: 1980 device_set_desc(dev, "1200-KB 5.25\" drive"); 1981 break; 1982 case FDT_144M: 1983 device_set_desc(dev, "1440-KB 3.5\" drive"); 1984 break; 1985 case FDT_288M: 1986 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 1987 break; 1988 case FDT_360K: 1989 device_set_desc(dev, "360-KB 5.25\" drive"); 1990 break; 1991 case FDT_720K: 1992 device_set_desc(dev, "720-KB 3.5\" drive"); 1993 break; 1994 default: 1995 return (ENXIO); 1996 } 1997 fd->track = FD_NO_TRACK; 1998 fd->fdc = fdc; 1999 fd->fdsu = fdsu; 2000 fd->options = 0; 2001 callout_init_mtx(&fd->toffhandle, &fd->fdc->fdc_mtx, 0); 2002 2003 /* initialize densities for subdevices */ 2004 fdsettype(fd, fd_native_types[fd->type]); 2005 return (0); 2006} 2007 2008/* 2009 * We have to do this in a geom event because GEOM is not running 2010 * when fd_attach() is. 2011 * XXX: move fd_attach after geom like ata/scsi disks 2012 */ 2013static void 2014fd_attach2(void *arg, int flag) 2015{ 2016 struct fd_data *fd; 2017 2018 fd = arg; 2019 2020 fd->fd_geom = g_new_geomf(&g_fd_class, 2021 "fd%d", device_get_unit(fd->dev)); 2022 fd->fd_provider = g_new_providerf(fd->fd_geom, "%s", fd->fd_geom->name); 2023 fd->fd_geom->softc = fd; 2024 g_error_provider(fd->fd_provider, 0); 2025} 2026 2027static int 2028fd_attach(device_t dev) 2029{ 2030 struct fd_data *fd; 2031 2032 fd = device_get_softc(dev); 2033 g_post_event(fd_attach2, fd, M_WAITOK, NULL); 2034 fd->flags |= FD_EMPTY; 2035 bioq_init(&fd->fd_bq); 2036 2037 return (0); 2038} 2039 2040static void 2041fd_detach_geom(void *arg, int flag) 2042{ 2043 struct fd_data *fd = arg; 2044 2045 g_topology_assert(); 2046 g_wither_geom(fd->fd_geom, ENXIO); 2047} 2048 2049static int 2050fd_detach(device_t dev) 2051{ 2052 struct fd_data *fd; 2053 2054 fd = device_get_softc(dev); 2055 g_waitfor_event(fd_detach_geom, fd, M_WAITOK, NULL); 2056 while (device_get_state(dev) == DS_BUSY) 2057 tsleep(fd, PZERO, "fdd", hz/10); 2058 callout_drain(&fd->toffhandle); 2059 2060 return (0); 2061} 2062 2063static device_method_t fd_methods[] = { 2064 /* Device interface */ 2065 DEVMETHOD(device_probe, fd_probe), 2066 DEVMETHOD(device_attach, fd_attach), 2067 DEVMETHOD(device_detach, fd_detach), 2068 DEVMETHOD(device_shutdown, bus_generic_shutdown), 2069 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 2070 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 2071 { 0, 0 } 2072}; 2073 2074static driver_t fd_driver = { 2075 "fd", 2076 fd_methods, 2077 sizeof(struct fd_data) 2078}; 2079 2080static int 2081fdc_modevent(module_t mod, int type, void *data) 2082{ 2083 2084 return (g_modevent(NULL, type, &g_fd_class)); 2085} 2086 2087DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, fdc_modevent, 0); 2088