1/*- 2 * SPDX-License-Identifier: BSD-3-Clause 3 * 4 * Copyright (c) 2004 Poul-Henning Kamp 5 * Copyright (c) 1990 The Regents of the University of California. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Don Ahn. 10 * 11 * Libretto PCMCIA floppy support by David Horwitt (dhorwitt@ucsd.edu) 12 * aided by the Linux floppy driver modifications from David Bateman 13 * (dbateman@eng.uts.edu.au). 14 * 15 * Copyright (c) 1993, 1994 by 16 * jc@irbs.UUCP (John Capo) 17 * vak@zebub.msk.su (Serge Vakulenko) 18 * ache@astral.msk.su (Andrew A. Chernov) 19 * 20 * Copyright (c) 1993, 1994, 1995 by 21 * joerg_wunsch@uriah.sax.de (Joerg Wunsch) 22 * dufault@hda.com (Peter Dufault) 23 * 24 * Copyright (c) 2001 Joerg Wunsch, 25 * joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) 26 * 27 * Redistribution and use in source and binary forms, with or without 28 * modification, are permitted provided that the following conditions 29 * are met: 30 * 1. Redistributions of source code must retain the above copyright 31 * notice, this list of conditions and the following disclaimer. 32 * 2. Redistributions in binary form must reproduce the above copyright 33 * notice, this list of conditions and the following disclaimer in the 34 * documentation and/or other materials provided with the distribution. 35 * 3. Neither the name of the University nor the names of its contributors 36 * may be used to endorse or promote products derived from this software 37 * without specific prior written permission. 38 * 39 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 40 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 42 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 43 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 44 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 45 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 47 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 48 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 49 * SUCH DAMAGE. 50 * 51 * from: @(#)fd.c 7.4 (Berkeley) 5/25/91 52 * 53 */ 54 55#include <sys/cdefs.h> 56__FBSDID("$FreeBSD$"); 57 58#include "opt_fdc.h" 59 60#include <sys/param.h> 61#include <sys/bio.h> 62#include <sys/bus.h> 63#include <sys/devicestat.h> 64#include <sys/disk.h> 65#include <sys/fcntl.h> 66#include <sys/fdcio.h> 67#include <sys/filio.h> 68#include <sys/kernel.h> 69#include <sys/kthread.h> 70#include <sys/lock.h> 71#include <sys/malloc.h> 72#include <sys/module.h> 73#include <sys/mutex.h> 74#include <sys/priv.h> 75#include <sys/proc.h> 76#include <sys/rman.h> 77#include <sys/sysctl.h> 78#include <sys/systm.h> 79 80#include <geom/geom.h> 81 82#include <machine/bus.h> 83#include <machine/clock.h> 84#include <machine/stdarg.h> 85 86#include <isa/isavar.h> 87#include <isa/isareg.h> 88#include <isa/rtc.h> 89#include <dev/fdc/fdcvar.h> 90 91#include <dev/ic/nec765.h> 92 93/* 94 * Runtime configuration hints/flags 95 */ 96 97/* configuration flags for fd */ 98#define FD_TYPEMASK 0x0f /* drive type, matches enum 99 * fd_drivetype; on i386 machines, if 100 * given as 0, use RTC type for fd0 101 * and fd1 */ 102#define FD_NO_CHLINE 0x10 /* drive does not support changeline 103 * aka. unit attention */ 104#define FD_NO_PROBE 0x20 /* don't probe drive (seek test), just 105 * assume it is there */ 106 107/* 108 * Things that could conceiveably considered parameters or tweakables 109 */ 110 111/* 112 * Maximal number of bytes in a cylinder. 113 * This is used for ISADMA bouncebuffer allocation and sets the max 114 * xfersize we support. 115 * 116 * 2.88M format has 2 x 36 x 512, allow for hacked up density. 117 */ 118#define MAX_BYTES_PER_CYL (2 * 40 * 512) 119 120/* 121 * Timeout value for the PIO loops to wait until the FDC main status 122 * register matches our expectations (request for master, direction 123 * bit). This is supposed to be a number of microseconds, although 124 * timing might actually not be very accurate. 125 * 126 * Timeouts of 100 msec are believed to be required for some broken 127 * (old) hardware. 128 */ 129#define FDSTS_TIMEOUT 100000 130 131/* 132 * After this many errors, stop whining. Close will reset this count. 133 */ 134#define FDC_ERRMAX 100 135 136/* 137 * AutoDensity search lists for each drive type. 138 */ 139 140static struct fd_type fd_searchlist_360k[] = { 141 { FDF_5_360 }, 142 { 0 } 143}; 144 145static struct fd_type fd_searchlist_12m[] = { 146 { FDF_5_1200 | FL_AUTO }, 147 { FDF_5_400 | FL_AUTO }, 148 { FDF_5_360 | FL_2STEP | FL_AUTO}, 149 { 0 } 150}; 151 152static struct fd_type fd_searchlist_720k[] = { 153 { FDF_3_720 }, 154 { 0 } 155}; 156 157static struct fd_type fd_searchlist_144m[] = { 158 { FDF_3_1440 | FL_AUTO}, 159 { FDF_3_720 | FL_AUTO}, 160 { 0 } 161}; 162 163static struct fd_type fd_searchlist_288m[] = { 164 { FDF_3_1440 | FL_AUTO }, 165#if 0 166 { FDF_3_2880 | FL_AUTO }, /* XXX: probably doesn't work */ 167#endif 168 { FDF_3_720 | FL_AUTO}, 169 { 0 } 170}; 171 172/* 173 * Order must match enum fd_drivetype in <sys/fdcio.h>. 174 */ 175static struct fd_type *fd_native_types[] = { 176 NULL, /* FDT_NONE */ 177 fd_searchlist_360k, /* FDT_360K */ 178 fd_searchlist_12m, /* FDT_12M */ 179 fd_searchlist_720k, /* FDT_720K */ 180 fd_searchlist_144m, /* FDT_144M */ 181 fd_searchlist_288m, /* FDT_288M_1 (mapped to FDT_288M) */ 182 fd_searchlist_288m, /* FDT_288M */ 183}; 184 185/* 186 * Internals start here 187 */ 188 189/* registers */ 190#define FDOUT 2 /* Digital Output Register (W) */ 191#define FDO_FDSEL 0x03 /* floppy device select */ 192#define FDO_FRST 0x04 /* floppy controller reset */ 193#define FDO_FDMAEN 0x08 /* enable floppy DMA and Interrupt */ 194#define FDO_MOEN0 0x10 /* motor enable drive 0 */ 195#define FDO_MOEN1 0x20 /* motor enable drive 1 */ 196#define FDO_MOEN2 0x40 /* motor enable drive 2 */ 197#define FDO_MOEN3 0x80 /* motor enable drive 3 */ 198 199#define FDSTS 4 /* NEC 765 Main Status Register (R) */ 200#define FDDSR 4 /* Data Rate Select Register (W) */ 201#define FDDATA 5 /* NEC 765 Data Register (R/W) */ 202#define FDCTL 7 /* Control Register (W) */ 203 204/* 205 * The YE-DATA PC Card floppies use PIO to read in the data rather 206 * than DMA due to the wild variability of DMA for the PC Card 207 * devices. DMA was deleted from the PC Card specification in version 208 * 7.2 of the standard, but that post-dates the YE-DATA devices by many 209 * years. 210 * 211 * In addition, if we cannot setup the DMA resources for the ISA 212 * attachment, we'll use this same offset for data transfer. However, 213 * that almost certainly won't work. 214 * 215 * For this mode, offset 0 and 1 must be used to setup the transfer 216 * for this floppy. This is OK for PC Card YE Data devices, but for 217 * ISA this is likely wrong. These registers are only available on 218 * those systems that map them to the floppy drive. Newer systems do 219 * not do this, and we should likely prohibit access to them (or 220 * disallow NODMA to be set). 221 */ 222#define FDBCDR 0 /* And 1 */ 223#define FD_YE_DATAPORT 6 /* Drive Data port */ 224 225#define FDI_DCHG 0x80 /* diskette has been changed */ 226 /* requires drive and motor being selected */ 227 /* is cleared by any step pulse to drive */ 228 229/* 230 * We have three private BIO commands. 231 */ 232#define BIO_PROBE BIO_CMD0 233#define BIO_RDID BIO_CMD1 234#define BIO_FMT BIO_CMD2 235 236/* 237 * Per drive structure (softc). 238 */ 239struct fd_data { 240 u_char *fd_ioptr; /* IO pointer */ 241 u_int fd_iosize; /* Size of IO chunks */ 242 u_int fd_iocount; /* Outstanding requests */ 243 struct fdc_data *fdc; /* pointer to controller structure */ 244 int fdsu; /* this units number on this controller */ 245 enum fd_drivetype type; /* drive type */ 246 struct fd_type *ft; /* pointer to current type descriptor */ 247 struct fd_type fts; /* type descriptors */ 248 int sectorsize; 249 int flags; 250#define FD_WP (1<<0) /* Write protected */ 251#define FD_MOTOR (1<<1) /* motor should be on */ 252#define FD_MOTORWAIT (1<<2) /* motor should be on */ 253#define FD_EMPTY (1<<3) /* no media */ 254#define FD_NEWDISK (1<<4) /* media changed */ 255#define FD_ISADMA (1<<5) /* isa dma started */ 256 int track; /* where we think the head is */ 257#define FD_NO_TRACK -2 258 int options; /* FDOPT_* */ 259 struct callout toffhandle; 260 struct g_geom *fd_geom; 261 struct g_provider *fd_provider; 262 device_t dev; 263 struct bio_queue_head fd_bq; 264}; 265 266#define FD_NOT_VALID -2 267 268static driver_intr_t fdc_intr; 269static driver_filter_t fdc_intr_fast; 270static void fdc_reset(struct fdc_data *); 271static int fd_probe_disk(struct fd_data *, int *); 272 273static SYSCTL_NODE(_debug, OID_AUTO, fdc, CTLFLAG_RW, 0, "fdc driver"); 274 275static int fifo_threshold = 8; 276SYSCTL_INT(_debug_fdc, OID_AUTO, fifo, CTLFLAG_RW, &fifo_threshold, 0, 277 "FIFO threshold setting"); 278 279static int debugflags = 0; 280SYSCTL_INT(_debug_fdc, OID_AUTO, debugflags, CTLFLAG_RW, &debugflags, 0, 281 "Debug flags"); 282 283static int retries = 10; 284SYSCTL_INT(_debug_fdc, OID_AUTO, retries, CTLFLAG_RW, &retries, 0, 285 "Number of retries to attempt"); 286 287static int spec1 = NE7_SPEC_1(6, 240); 288SYSCTL_INT(_debug_fdc, OID_AUTO, spec1, CTLFLAG_RW, &spec1, 0, 289 "Specification byte one (step-rate + head unload)"); 290 291static int spec2 = NE7_SPEC_2(16, 0); 292SYSCTL_INT(_debug_fdc, OID_AUTO, spec2, CTLFLAG_RW, &spec2, 0, 293 "Specification byte two (head load time + no-dma)"); 294 295static int settle; 296SYSCTL_INT(_debug_fdc, OID_AUTO, settle, CTLFLAG_RW, &settle, 0, 297 "Head settling time in sec/hz"); 298 299static void 300fdprinttype(struct fd_type *ft) 301{ 302 303 printf("(%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,0x%x)", 304 ft->sectrac, ft->secsize, ft->datalen, ft->gap, ft->tracks, 305 ft->size, ft->trans, ft->heads, ft->f_gap, ft->f_inter, 306 ft->offset_side2, ft->flags); 307} 308 309static void 310fdsettype(struct fd_data *fd, struct fd_type *ft) 311{ 312 fd->ft = ft; 313 ft->size = ft->sectrac * ft->heads * ft->tracks; 314 fd->sectorsize = 128 << fd->ft->secsize; 315} 316 317/* 318 * Bus space handling (access to low-level IO). 319 */ 320static inline void 321fdregwr(struct fdc_data *fdc, int reg, uint8_t v) 322{ 323 324 bus_space_write_1(fdc->iot, fdc->ioh[reg], fdc->ioff[reg], v); 325} 326 327static inline uint8_t 328fdregrd(struct fdc_data *fdc, int reg) 329{ 330 331 return bus_space_read_1(fdc->iot, fdc->ioh[reg], fdc->ioff[reg]); 332} 333 334static void 335fdctl_wr(struct fdc_data *fdc, u_int8_t v) 336{ 337 338 fdregwr(fdc, FDCTL, v); 339} 340 341static void 342fdout_wr(struct fdc_data *fdc, u_int8_t v) 343{ 344 345 fdregwr(fdc, FDOUT, v); 346} 347 348static u_int8_t 349fdsts_rd(struct fdc_data *fdc) 350{ 351 352 return fdregrd(fdc, FDSTS); 353} 354 355static void 356fddsr_wr(struct fdc_data *fdc, u_int8_t v) 357{ 358 359 fdregwr(fdc, FDDSR, v); 360} 361 362static void 363fddata_wr(struct fdc_data *fdc, u_int8_t v) 364{ 365 366 fdregwr(fdc, FDDATA, v); 367} 368 369static u_int8_t 370fddata_rd(struct fdc_data *fdc) 371{ 372 373 return fdregrd(fdc, FDDATA); 374} 375 376static u_int8_t 377fdin_rd(struct fdc_data *fdc) 378{ 379 380 return fdregrd(fdc, FDCTL); 381} 382 383/* 384 * Magic pseudo-DMA initialization for YE FDC. Sets count and 385 * direction. 386 */ 387static void 388fdbcdr_wr(struct fdc_data *fdc, int iswrite, uint16_t count) 389{ 390 fdregwr(fdc, FDBCDR, (count - 1) & 0xff); 391 fdregwr(fdc, FDBCDR + 1, 392 (iswrite ? 0x80 : 0) | (((count - 1) >> 8) & 0x7f)); 393} 394 395static int 396fdc_err(struct fdc_data *fdc, const char *s) 397{ 398 fdc->fdc_errs++; 399 if (s) { 400 if (fdc->fdc_errs < FDC_ERRMAX) 401 device_printf(fdc->fdc_dev, "%s", s); 402 else if (fdc->fdc_errs == FDC_ERRMAX) 403 device_printf(fdc->fdc_dev, "too many errors, not " 404 "logging any more\n"); 405 } 406 407 return (1); 408} 409 410/* 411 * FDC IO functions, take care of the main status register, timeout 412 * in case the desired status bits are never set. 413 * 414 * These PIO loops initially start out with short delays between 415 * each iteration in the expectation that the required condition 416 * is usually met quickly, so it can be handled immediately. 417 */ 418static int 419fdc_in(struct fdc_data *fdc, int *ptr) 420{ 421 int i, j, step; 422 423 step = 1; 424 for (j = 0; j < FDSTS_TIMEOUT; j += step) { 425 i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM); 426 if (i == (NE7_DIO|NE7_RQM)) { 427 i = fddata_rd(fdc); 428 if (ptr) 429 *ptr = i; 430 return (0); 431 } 432 if (i == NE7_RQM) 433 return (fdc_err(fdc, "ready for output in input\n")); 434 step += step; 435 DELAY(step); 436 } 437 return (fdc_err(fdc, bootverbose? "input ready timeout\n": 0)); 438} 439 440static int 441fdc_out(struct fdc_data *fdc, int x) 442{ 443 int i, j, step; 444 445 step = 1; 446 for (j = 0; j < FDSTS_TIMEOUT; j += step) { 447 i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM); 448 if (i == NE7_RQM) { 449 fddata_wr(fdc, x); 450 return (0); 451 } 452 if (i == (NE7_DIO|NE7_RQM)) 453 return (fdc_err(fdc, "ready for input in output\n")); 454 step += step; 455 DELAY(step); 456 } 457 return (fdc_err(fdc, bootverbose? "output ready timeout\n": 0)); 458} 459 460/* 461 * fdc_cmd: Send a command to the chip. 462 * Takes a varargs with this structure: 463 * # of output bytes 464 * output bytes as int [...] 465 * # of input bytes 466 * input bytes as int* [...] 467 */ 468static int 469fdc_cmd(struct fdc_data *fdc, int n_out, ...) 470{ 471 u_char cmd = 0; 472 int n_in; 473 int n, i; 474 va_list ap; 475 476 va_start(ap, n_out); 477 for (n = 0; n < n_out; n++) { 478 i = va_arg(ap, int); 479 if (n == 0) 480 cmd = i; 481 if (fdc_out(fdc, i) < 0) { 482 char msg[50]; 483 snprintf(msg, sizeof(msg), 484 "cmd %x failed at out byte %d of %d\n", 485 cmd, n + 1, n_out); 486 fdc->flags |= FDC_NEEDS_RESET; 487 va_end(ap); 488 return fdc_err(fdc, msg); 489 } 490 } 491 n_in = va_arg(ap, int); 492 for (n = 0; n < n_in; n++) { 493 int *ptr = va_arg(ap, int *); 494 if (fdc_in(fdc, ptr) != 0) { 495 char msg[50]; 496 snprintf(msg, sizeof(msg), 497 "cmd %02x failed at in byte %d of %d\n", 498 cmd, n + 1, n_in); 499 fdc->flags |= FDC_NEEDS_RESET; 500 va_end(ap); 501 return fdc_err(fdc, msg); 502 } 503 } 504 va_end(ap); 505 return (0); 506} 507 508static void 509fdc_reset(struct fdc_data *fdc) 510{ 511 int i, r[10]; 512 513 if (fdc->fdct == FDC_ENHANCED) { 514 /* Try a software reset, default precomp, and 500 kb/s */ 515 fddsr_wr(fdc, I8207X_DSR_SR); 516 } else { 517 /* Try a hardware reset, keep motor on */ 518 fdout_wr(fdc, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 519 DELAY(100); 520 /* enable FDC, but defer interrupts a moment */ 521 fdout_wr(fdc, fdc->fdout & ~FDO_FDMAEN); 522 } 523 DELAY(100); 524 fdout_wr(fdc, fdc->fdout); 525 526 /* XXX after a reset, silently believe the FDC will accept commands */ 527 if (fdc_cmd(fdc, 3, NE7CMD_SPECIFY, spec1, spec2, 0)) 528 device_printf(fdc->fdc_dev, " SPECIFY failed in reset\n"); 529 530 if (fdc->fdct == FDC_ENHANCED) { 531 if (fdc_cmd(fdc, 4, 532 I8207X_CONFIG, 533 0, 534 /* 0x40 | */ /* Enable Implied Seek - 535 * breaks 2step! */ 536 0x10 | /* Polling disabled */ 537 (fifo_threshold - 1), /* Fifo threshold */ 538 0x00, /* Precomp track */ 539 0)) 540 device_printf(fdc->fdc_dev, 541 " CONFIGURE failed in reset\n"); 542 if (debugflags & 1) { 543 if (fdc_cmd(fdc, 1, 544 I8207X_DUMPREG, 545 10, &r[0], &r[1], &r[2], &r[3], &r[4], 546 &r[5], &r[6], &r[7], &r[8], &r[9])) 547 device_printf(fdc->fdc_dev, 548 " DUMPREG failed in reset\n"); 549 for (i = 0; i < 10; i++) 550 printf(" %02x", r[i]); 551 printf("\n"); 552 } 553 } 554} 555 556static int 557fdc_sense_drive(struct fdc_data *fdc, int *st3p) 558{ 559 int st3; 560 561 if (fdc_cmd(fdc, 2, NE7CMD_SENSED, fdc->fd->fdsu, 1, &st3)) 562 return (fdc_err(fdc, "Sense Drive Status failed\n")); 563 if (st3p) 564 *st3p = st3; 565 return (0); 566} 567 568static int 569fdc_sense_int(struct fdc_data *fdc, int *st0p, int *cylp) 570{ 571 int cyl, st0, ret; 572 573 ret = fdc_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); 574 if (ret) { 575 (void)fdc_err(fdc, "sense intr err reading stat reg 0\n"); 576 return (ret); 577 } 578 579 if (st0p) 580 *st0p = st0; 581 582 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { 583 /* 584 * There doesn't seem to have been an interrupt. 585 */ 586 return (FD_NOT_VALID); 587 } 588 589 if (fdc_in(fdc, &cyl) != 0) 590 return fdc_err(fdc, "can't get cyl num\n"); 591 592 if (cylp) 593 *cylp = cyl; 594 595 return (0); 596} 597 598static int 599fdc_read_status(struct fdc_data *fdc) 600{ 601 int i, ret, status; 602 603 for (i = ret = 0; i < 7; i++) { 604 ret = fdc_in(fdc, &status); 605 fdc->status[i] = status; 606 if (ret != 0) 607 break; 608 } 609 610 if (ret == 0) 611 fdc->flags |= FDC_STAT_VALID; 612 else 613 fdc->flags &= ~FDC_STAT_VALID; 614 615 return ret; 616} 617 618/* 619 * Select this drive 620 */ 621static void 622fd_select(struct fd_data *fd) 623{ 624 struct fdc_data *fdc; 625 626 /* XXX: lock controller */ 627 fdc = fd->fdc; 628 fdc->fdout &= ~FDO_FDSEL; 629 fdc->fdout |= FDO_FDMAEN | FDO_FRST | fd->fdsu; 630 fdout_wr(fdc, fdc->fdout); 631} 632 633static void 634fd_turnon(void *arg) 635{ 636 struct fd_data *fd; 637 struct bio *bp; 638 int once; 639 640 fd = arg; 641 mtx_assert(&fd->fdc->fdc_mtx, MA_OWNED); 642 fd->flags &= ~FD_MOTORWAIT; 643 fd->flags |= FD_MOTOR; 644 once = 0; 645 for (;;) { 646 bp = bioq_takefirst(&fd->fd_bq); 647 if (bp == NULL) 648 break; 649 bioq_disksort(&fd->fdc->head, bp); 650 once = 1; 651 } 652 if (once) 653 wakeup(&fd->fdc->head); 654} 655 656static void 657fd_motor(struct fd_data *fd, int turnon) 658{ 659 struct fdc_data *fdc; 660 661 fdc = fd->fdc; 662/* 663 mtx_assert(&fdc->fdc_mtx, MA_OWNED); 664*/ 665 if (turnon) { 666 fd->flags |= FD_MOTORWAIT; 667 fdc->fdout |= (FDO_MOEN0 << fd->fdsu); 668 callout_reset(&fd->toffhandle, hz, fd_turnon, fd); 669 } else { 670 callout_stop(&fd->toffhandle); 671 fd->flags &= ~(FD_MOTOR|FD_MOTORWAIT); 672 fdc->fdout &= ~(FDO_MOEN0 << fd->fdsu); 673 } 674 fdout_wr(fdc, fdc->fdout); 675} 676 677static void 678fd_turnoff(void *xfd) 679{ 680 struct fd_data *fd = xfd; 681 682 mtx_assert(&fd->fdc->fdc_mtx, MA_OWNED); 683 fd_motor(fd, 0); 684} 685 686/* 687 * fdc_intr - wake up the worker thread. 688 */ 689 690static void 691fdc_intr(void *arg) 692{ 693 694 wakeup(arg); 695} 696 697static int 698fdc_intr_fast(void *arg) 699{ 700 701 wakeup(arg); 702 return(FILTER_HANDLED); 703} 704 705/* 706 * fdc_pio(): perform programmed IO read/write for YE PCMCIA floppy. 707 */ 708static void 709fdc_pio(struct fdc_data *fdc) 710{ 711 u_char *cptr; 712 struct bio *bp; 713 u_int count; 714 715 bp = fdc->bp; 716 cptr = fdc->fd->fd_ioptr; 717 count = fdc->fd->fd_iosize; 718 719 if (bp->bio_cmd == BIO_READ) { 720 fdbcdr_wr(fdc, 0, count); 721 bus_space_read_multi_1(fdc->iot, fdc->ioh[FD_YE_DATAPORT], 722 fdc->ioff[FD_YE_DATAPORT], cptr, count); 723 } else { 724 bus_space_write_multi_1(fdc->iot, fdc->ioh[FD_YE_DATAPORT], 725 fdc->ioff[FD_YE_DATAPORT], cptr, count); 726 fdbcdr_wr(fdc, 0, count); /* needed? */ 727 } 728} 729 730static int 731fdc_biodone(struct fdc_data *fdc, int error) 732{ 733 struct fd_data *fd; 734 struct bio *bp; 735 736 fd = fdc->fd; 737 bp = fdc->bp; 738 739 mtx_lock(&fdc->fdc_mtx); 740 if (--fd->fd_iocount == 0) 741 callout_reset(&fd->toffhandle, 4 * hz, fd_turnoff, fd); 742 fdc->bp = NULL; 743 fdc->fd = NULL; 744 mtx_unlock(&fdc->fdc_mtx); 745 if (bp->bio_to != NULL) { 746 if ((debugflags & 2) && fd->fdc->retry > 0) 747 printf("retries: %d\n", fd->fdc->retry); 748 g_io_deliver(bp, error); 749 return (0); 750 } 751 bp->bio_error = error; 752 bp->bio_flags |= BIO_DONE; 753 wakeup(bp); 754 return (0); 755} 756 757static int retry_line; 758 759static int 760fdc_worker(struct fdc_data *fdc) 761{ 762 struct fd_data *fd; 763 struct bio *bp; 764 int i, nsect; 765 int st0, st3, cyl, mfm, steptrac, cylinder, descyl, sec; 766 int head; 767 int override_error; 768 static int need_recal; 769 struct fdc_readid *idp; 770 struct fd_formb *finfo; 771 772 override_error = 0; 773 774 /* Have we exhausted our retries ? */ 775 bp = fdc->bp; 776 fd = fdc->fd; 777 if (bp != NULL && 778 (fdc->retry >= retries || (fd->options & FDOPT_NORETRY))) { 779 if ((debugflags & 4)) 780 printf("Too many retries (EIO)\n"); 781 if (fdc->flags & FDC_NEEDS_RESET) { 782 mtx_lock(&fdc->fdc_mtx); 783 fd->flags |= FD_EMPTY; 784 mtx_unlock(&fdc->fdc_mtx); 785 } 786 return (fdc_biodone(fdc, EIO)); 787 } 788 789 /* Disable ISADMA if we bailed while it was active */ 790 if (fd != NULL && (fd->flags & FD_ISADMA)) { 791 isa_dmadone( 792 bp->bio_cmd == BIO_READ ? ISADMA_READ : ISADMA_WRITE, 793 fd->fd_ioptr, fd->fd_iosize, fdc->dmachan); 794 mtx_lock(&fdc->fdc_mtx); 795 fd->flags &= ~FD_ISADMA; 796 mtx_unlock(&fdc->fdc_mtx); 797 } 798 799 /* Unwedge the controller ? */ 800 if (fdc->flags & FDC_NEEDS_RESET) { 801 fdc->flags &= ~FDC_NEEDS_RESET; 802 fdc_reset(fdc); 803 if (cold) 804 DELAY(1000000); 805 else 806 tsleep(fdc, PRIBIO, "fdcrst", hz); 807 /* Discard results */ 808 for (i = 0; i < 4; i++) 809 fdc_sense_int(fdc, &st0, &cyl); 810 /* All drives must recal */ 811 need_recal = 0xf; 812 } 813 814 /* Pick up a request, if need be wait for it */ 815 if (fdc->bp == NULL) { 816 mtx_lock(&fdc->fdc_mtx); 817 do { 818 fdc->bp = bioq_takefirst(&fdc->head); 819 if (fdc->bp == NULL) 820 msleep(&fdc->head, &fdc->fdc_mtx, 821 PRIBIO, "-", 0); 822 } while (fdc->bp == NULL && 823 (fdc->flags & FDC_KTHREAD_EXIT) == 0); 824 mtx_unlock(&fdc->fdc_mtx); 825 826 if (fdc->bp == NULL) 827 /* 828 * Nothing to do, worker thread has been 829 * requested to stop. 830 */ 831 return (0); 832 833 bp = fdc->bp; 834 fd = fdc->fd = bp->bio_driver1; 835 fdc->retry = 0; 836 fd->fd_ioptr = bp->bio_data; 837 if (bp->bio_cmd == BIO_FMT) { 838 i = offsetof(struct fd_formb, fd_formb_cylno(0)); 839 fd->fd_ioptr += i; 840 fd->fd_iosize = bp->bio_length - i; 841 } 842 } 843 844 /* Select drive, setup params */ 845 fd_select(fd); 846 if (fdc->fdct == FDC_ENHANCED) 847 fddsr_wr(fdc, fd->ft->trans); 848 else 849 fdctl_wr(fdc, fd->ft->trans); 850 851 if (bp->bio_cmd == BIO_PROBE) { 852 if ((!(device_get_flags(fd->dev) & FD_NO_CHLINE) && 853 !(fdin_rd(fdc) & FDI_DCHG) && 854 !(fd->flags & FD_EMPTY)) || 855 fd_probe_disk(fd, &need_recal) == 0) 856 return (fdc_biodone(fdc, 0)); 857 return (1); 858 } 859 860 /* 861 * If we are dead just flush the requests 862 */ 863 if (fd->flags & FD_EMPTY) 864 return (fdc_biodone(fdc, ENXIO)); 865 866 /* Check if we lost our media */ 867 if (fdin_rd(fdc) & FDI_DCHG) { 868 if (debugflags & 0x40) 869 printf("Lost disk\n"); 870 mtx_lock(&fdc->fdc_mtx); 871 fd->flags |= FD_EMPTY; 872 fd->flags |= FD_NEWDISK; 873 mtx_unlock(&fdc->fdc_mtx); 874 g_topology_lock(); 875 g_orphan_provider(fd->fd_provider, ENXIO); 876 fd->fd_provider->flags |= G_PF_WITHER; 877 fd->fd_provider = 878 g_new_providerf(fd->fd_geom, "%s", fd->fd_geom->name); 879 g_error_provider(fd->fd_provider, 0); 880 g_topology_unlock(); 881 return (fdc_biodone(fdc, ENXIO)); 882 } 883 884 /* Check if the floppy is write-protected */ 885 if (bp->bio_cmd == BIO_FMT || bp->bio_cmd == BIO_WRITE) { 886 retry_line = __LINE__; 887 if(fdc_sense_drive(fdc, &st3) != 0) 888 return (1); 889 if(st3 & NE7_ST3_WP) 890 return (fdc_biodone(fdc, EROFS)); 891 } 892 893 mfm = (fd->ft->flags & FL_MFM)? NE7CMD_MFM: 0; 894 steptrac = (fd->ft->flags & FL_2STEP)? 2: 1; 895 i = fd->ft->sectrac * fd->ft->heads; 896 cylinder = bp->bio_pblkno / i; 897 descyl = cylinder * steptrac; 898 sec = bp->bio_pblkno % i; 899 nsect = i - sec; 900 head = sec / fd->ft->sectrac; 901 sec = sec % fd->ft->sectrac + 1; 902 903 /* If everything is going swimmingly, use multisector xfer */ 904 if (fdc->retry == 0 && 905 (bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE)) { 906 fd->fd_iosize = imin(nsect * fd->sectorsize, bp->bio_resid); 907 nsect = fd->fd_iosize / fd->sectorsize; 908 } else if (bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE) { 909 fd->fd_iosize = fd->sectorsize; 910 nsect = 1; 911 } 912 913 /* Do RECAL if we need to or are going to track zero anyway */ 914 if ((need_recal & (1 << fd->fdsu)) || 915 (cylinder == 0 && fd->track != 0) || 916 fdc->retry > 2) { 917 retry_line = __LINE__; 918 if (fdc_cmd(fdc, 2, NE7CMD_RECAL, fd->fdsu, 0)) 919 return (1); 920 tsleep(fdc, PRIBIO, "fdrecal", hz); 921 retry_line = __LINE__; 922 if (fdc_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 923 return (1); /* XXX */ 924 retry_line = __LINE__; 925 if ((st0 & 0xc0) || cyl != 0) 926 return (1); 927 need_recal &= ~(1 << fd->fdsu); 928 fd->track = 0; 929 /* let the heads settle */ 930 if (settle) 931 tsleep(fdc->fd, PRIBIO, "fdhdstl", settle); 932 } 933 934 /* 935 * SEEK to where we want to be 936 */ 937 if (cylinder != fd->track) { 938 retry_line = __LINE__; 939 if (fdc_cmd(fdc, 3, NE7CMD_SEEK, fd->fdsu, descyl, 0)) 940 return (1); 941 tsleep(fdc, PRIBIO, "fdseek", hz); 942 retry_line = __LINE__; 943 if (fdc_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 944 return (1); /* XXX */ 945 retry_line = __LINE__; 946 if ((st0 & 0xc0) || cyl != descyl) { 947 need_recal |= (1 << fd->fdsu); 948 return (1); 949 } 950 /* let the heads settle */ 951 if (settle) 952 tsleep(fdc->fd, PRIBIO, "fdhdstl", settle); 953 } 954 fd->track = cylinder; 955 956 if (debugflags & 8) 957 printf("op %x bn %ju siz %u ptr %p retry %d\n", 958 bp->bio_cmd, bp->bio_pblkno, fd->fd_iosize, 959 fd->fd_ioptr, fdc->retry); 960 961 /* Setup ISADMA if we need it and have it */ 962 if ((bp->bio_cmd == BIO_READ || 963 bp->bio_cmd == BIO_WRITE || 964 bp->bio_cmd == BIO_FMT) 965 && !(fdc->flags & FDC_NODMA)) { 966 isa_dmastart( 967 bp->bio_cmd == BIO_READ ? ISADMA_READ : ISADMA_WRITE, 968 fd->fd_ioptr, fd->fd_iosize, fdc->dmachan); 969 mtx_lock(&fdc->fdc_mtx); 970 fd->flags |= FD_ISADMA; 971 mtx_unlock(&fdc->fdc_mtx); 972 } 973 974 /* Do PIO if we have to */ 975 if (fdc->flags & FDC_NODMA) { 976 if (bp->bio_cmd == BIO_READ || 977 bp->bio_cmd == BIO_WRITE || 978 bp->bio_cmd == BIO_FMT) 979 fdbcdr_wr(fdc, 1, fd->fd_iosize); 980 if (bp->bio_cmd == BIO_WRITE || 981 bp->bio_cmd == BIO_FMT) 982 fdc_pio(fdc); 983 } 984 985 switch(bp->bio_cmd) { 986 case BIO_FMT: 987 /* formatting */ 988 finfo = (struct fd_formb *)bp->bio_data; 989 retry_line = __LINE__; 990 if (fdc_cmd(fdc, 6, 991 NE7CMD_FORMAT | mfm, 992 head << 2 | fd->fdsu, 993 finfo->fd_formb_secshift, 994 finfo->fd_formb_nsecs, 995 finfo->fd_formb_gaplen, 996 finfo->fd_formb_fillbyte, 0)) 997 return (1); 998 break; 999 case BIO_RDID: 1000 retry_line = __LINE__; 1001 if (fdc_cmd(fdc, 2, 1002 NE7CMD_READID | mfm, 1003 head << 2 | fd->fdsu, 0)) 1004 return (1); 1005 break; 1006 case BIO_READ: 1007 retry_line = __LINE__; 1008 if (fdc_cmd(fdc, 9, 1009 NE7CMD_READ | NE7CMD_SK | mfm | NE7CMD_MT, 1010 head << 2 | fd->fdsu, /* head & unit */ 1011 fd->track, /* track */ 1012 head, /* head */ 1013 sec, /* sector + 1 */ 1014 fd->ft->secsize, /* sector size */ 1015 fd->ft->sectrac, /* sectors/track */ 1016 fd->ft->gap, /* gap size */ 1017 fd->ft->datalen, /* data length */ 1018 0)) 1019 return (1); 1020 break; 1021 case BIO_WRITE: 1022 retry_line = __LINE__; 1023 if (fdc_cmd(fdc, 9, 1024 NE7CMD_WRITE | mfm | NE7CMD_MT, 1025 head << 2 | fd->fdsu, /* head & unit */ 1026 fd->track, /* track */ 1027 head, /* head */ 1028 sec, /* sector + 1 */ 1029 fd->ft->secsize, /* sector size */ 1030 fd->ft->sectrac, /* sectors/track */ 1031 fd->ft->gap, /* gap size */ 1032 fd->ft->datalen, /* data length */ 1033 0)) 1034 return (1); 1035 break; 1036 default: 1037 KASSERT(0 == 1, ("Wrong bio_cmd %x\n", bp->bio_cmd)); 1038 } 1039 1040 /* Wait for interrupt */ 1041 i = tsleep(fdc, PRIBIO, "fddata", hz); 1042 1043 /* PIO if the read looks good */ 1044 if (i == 0 && (fdc->flags & FDC_NODMA) && (bp->bio_cmd == BIO_READ)) 1045 fdc_pio(fdc); 1046 1047 /* Finish DMA */ 1048 if (fd->flags & FD_ISADMA) { 1049 isa_dmadone( 1050 bp->bio_cmd == BIO_READ ? ISADMA_READ : ISADMA_WRITE, 1051 fd->fd_ioptr, fd->fd_iosize, fdc->dmachan); 1052 mtx_lock(&fdc->fdc_mtx); 1053 fd->flags &= ~FD_ISADMA; 1054 mtx_unlock(&fdc->fdc_mtx); 1055 } 1056 1057 if (i != 0) { 1058 /* 1059 * Timeout. 1060 * 1061 * Due to IBM's brain-dead design, the FDC has a faked ready 1062 * signal, hardwired to ready == true. Thus, any command 1063 * issued if there's no diskette in the drive will _never_ 1064 * complete, and must be aborted by resetting the FDC. 1065 * Many thanks, Big Blue! 1066 */ 1067 retry_line = __LINE__; 1068 fdc->flags |= FDC_NEEDS_RESET; 1069 return (1); 1070 } 1071 1072 retry_line = __LINE__; 1073 if (fdc_read_status(fdc)) 1074 return (1); 1075 1076 if (debugflags & 0x10) 1077 printf(" -> %x %x %x %x\n", 1078 fdc->status[0], fdc->status[1], 1079 fdc->status[2], fdc->status[3]); 1080 1081 st0 = fdc->status[0] & NE7_ST0_IC; 1082 if (st0 != 0) { 1083 retry_line = __LINE__; 1084 if (st0 == NE7_ST0_IC_AT && fdc->status[1] & NE7_ST1_OR) { 1085 /* 1086 * DMA overrun. Someone hogged the bus and 1087 * didn't release it in time for the next 1088 * FDC transfer. 1089 */ 1090 return (1); 1091 } 1092 retry_line = __LINE__; 1093 if(st0 == NE7_ST0_IC_IV) { 1094 fdc->flags |= FDC_NEEDS_RESET; 1095 return (1); 1096 } 1097 retry_line = __LINE__; 1098 if(st0 == NE7_ST0_IC_AT && fdc->status[2] & NE7_ST2_WC) { 1099 need_recal |= (1 << fd->fdsu); 1100 return (1); 1101 } 1102 if (debugflags & 0x20) { 1103 printf("status %02x %02x %02x %02x %02x %02x\n", 1104 fdc->status[0], fdc->status[1], fdc->status[2], 1105 fdc->status[3], fdc->status[4], fdc->status[5]); 1106 } 1107 retry_line = __LINE__; 1108 if (fd->options & FDOPT_NOERROR) 1109 override_error = 1; 1110 else 1111 return (1); 1112 } 1113 /* All OK */ 1114 switch(bp->bio_cmd) { 1115 case BIO_RDID: 1116 /* copy out ID field contents */ 1117 idp = (struct fdc_readid *)bp->bio_data; 1118 idp->cyl = fdc->status[3]; 1119 idp->head = fdc->status[4]; 1120 idp->sec = fdc->status[5]; 1121 idp->secshift = fdc->status[6]; 1122 if (debugflags & 0x40) 1123 printf("c %d h %d s %d z %d\n", 1124 idp->cyl, idp->head, idp->sec, idp->secshift); 1125 break; 1126 case BIO_READ: 1127 case BIO_WRITE: 1128 bp->bio_pblkno += nsect; 1129 bp->bio_resid -= fd->fd_iosize; 1130 bp->bio_completed += fd->fd_iosize; 1131 fd->fd_ioptr += fd->fd_iosize; 1132 if (override_error) { 1133 if ((debugflags & 4)) 1134 printf("FDOPT_NOERROR: returning bad data\n"); 1135 } else { 1136 /* Since we managed to get something done, 1137 * reset the retry */ 1138 fdc->retry = 0; 1139 if (bp->bio_resid > 0) 1140 return (0); 1141 } 1142 break; 1143 case BIO_FMT: 1144 break; 1145 } 1146 return (fdc_biodone(fdc, 0)); 1147} 1148 1149static void 1150fdc_thread(void *arg) 1151{ 1152 struct fdc_data *fdc; 1153 1154 fdc = arg; 1155 int i; 1156 1157 mtx_lock(&fdc->fdc_mtx); 1158 fdc->flags |= FDC_KTHREAD_ALIVE; 1159 while ((fdc->flags & FDC_KTHREAD_EXIT) == 0) { 1160 mtx_unlock(&fdc->fdc_mtx); 1161 i = fdc_worker(fdc); 1162 if (i && debugflags & 0x20) { 1163 if (fdc->bp != NULL) { 1164 g_print_bio(fdc->bp); 1165 printf("\n"); 1166 } 1167 printf("Retry line %d\n", retry_line); 1168 } 1169 fdc->retry += i; 1170 mtx_lock(&fdc->fdc_mtx); 1171 } 1172 fdc->flags &= ~(FDC_KTHREAD_EXIT | FDC_KTHREAD_ALIVE); 1173 mtx_unlock(&fdc->fdc_mtx); 1174 1175 kproc_exit(0); 1176} 1177 1178/* 1179 * Enqueue a request. 1180 */ 1181static void 1182fd_enqueue(struct fd_data *fd, struct bio *bp) 1183{ 1184 struct fdc_data *fdc; 1185 int call; 1186 1187 call = 0; 1188 fdc = fd->fdc; 1189 mtx_lock(&fdc->fdc_mtx); 1190 /* If we go from idle, cancel motor turnoff */ 1191 if (fd->fd_iocount++ == 0) 1192 callout_stop(&fd->toffhandle); 1193 if (fd->flags & FD_MOTOR) { 1194 /* The motor is on, send it directly to the controller */ 1195 bioq_disksort(&fdc->head, bp); 1196 wakeup(&fdc->head); 1197 } else { 1198 /* Queue it on the drive until the motor has started */ 1199 bioq_insert_tail(&fd->fd_bq, bp); 1200 if (!(fd->flags & FD_MOTORWAIT)) 1201 fd_motor(fd, 1); 1202 } 1203 mtx_unlock(&fdc->fdc_mtx); 1204} 1205 1206/* 1207 * Try to find out if we have a disk in the drive. 1208 */ 1209static int 1210fd_probe_disk(struct fd_data *fd, int *recal) 1211{ 1212 struct fdc_data *fdc; 1213 int st0, st3, cyl; 1214 int oopts, ret; 1215 1216 fdc = fd->fdc; 1217 oopts = fd->options; 1218 fd->options |= FDOPT_NOERRLOG | FDOPT_NORETRY; 1219 ret = 1; 1220 1221 /* 1222 * First recal, then seek to cyl#1, this clears the old condition on 1223 * the disk change line so we can examine it for current status. 1224 */ 1225 if (debugflags & 0x40) 1226 printf("New disk in probe\n"); 1227 mtx_lock(&fdc->fdc_mtx); 1228 fd->flags |= FD_NEWDISK; 1229 mtx_unlock(&fdc->fdc_mtx); 1230 if (fdc_cmd(fdc, 2, NE7CMD_RECAL, fd->fdsu, 0)) 1231 goto done; 1232 tsleep(fdc, PRIBIO, "fdrecal", hz); 1233 if (fdc_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 1234 goto done; /* XXX */ 1235 if ((st0 & 0xc0) || cyl != 0) 1236 goto done; 1237 1238 /* Seek to track 1 */ 1239 if (fdc_cmd(fdc, 3, NE7CMD_SEEK, fd->fdsu, 1, 0)) 1240 goto done; 1241 tsleep(fdc, PRIBIO, "fdseek", hz); 1242 if (fdc_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 1243 goto done; /* XXX */ 1244 *recal |= (1 << fd->fdsu); 1245 if (fdin_rd(fdc) & FDI_DCHG) { 1246 if (debugflags & 0x40) 1247 printf("Empty in probe\n"); 1248 mtx_lock(&fdc->fdc_mtx); 1249 fd->flags |= FD_EMPTY; 1250 mtx_unlock(&fdc->fdc_mtx); 1251 } else { 1252 if (fdc_sense_drive(fdc, &st3) != 0) 1253 goto done; 1254 if (debugflags & 0x40) 1255 printf("Got disk in probe\n"); 1256 mtx_lock(&fdc->fdc_mtx); 1257 fd->flags &= ~FD_EMPTY; 1258 if (st3 & NE7_ST3_WP) 1259 fd->flags |= FD_WP; 1260 else 1261 fd->flags &= ~FD_WP; 1262 mtx_unlock(&fdc->fdc_mtx); 1263 } 1264 ret = 0; 1265 1266done: 1267 fd->options = oopts; 1268 return (ret); 1269} 1270 1271static int 1272fdmisccmd(struct fd_data *fd, u_int cmd, void *data) 1273{ 1274 struct bio *bp; 1275 struct fd_formb *finfo; 1276 struct fdc_readid *idfield; 1277 int error; 1278 1279 bp = malloc(sizeof(struct bio), M_TEMP, M_WAITOK | M_ZERO); 1280 1281 /* 1282 * Set up a bio request for fdstrategy(). bio_offset is faked 1283 * so that fdstrategy() will seek to the requested 1284 * cylinder, and use the desired head. 1285 */ 1286 bp->bio_cmd = cmd; 1287 if (cmd == BIO_FMT) { 1288 finfo = (struct fd_formb *)data; 1289 bp->bio_pblkno = 1290 (finfo->cyl * fd->ft->heads + finfo->head) * 1291 fd->ft->sectrac; 1292 bp->bio_length = sizeof *finfo; 1293 } else if (cmd == BIO_RDID) { 1294 idfield = (struct fdc_readid *)data; 1295 bp->bio_pblkno = 1296 (idfield->cyl * fd->ft->heads + idfield->head) * 1297 fd->ft->sectrac; 1298 bp->bio_length = sizeof(struct fdc_readid); 1299 } else if (cmd == BIO_PROBE) { 1300 /* nothing */ 1301 } else 1302 panic("wrong cmd in fdmisccmd()"); 1303 bp->bio_offset = bp->bio_pblkno * fd->sectorsize; 1304 bp->bio_data = data; 1305 bp->bio_driver1 = fd; 1306 bp->bio_flags = 0; 1307 1308 fd_enqueue(fd, bp); 1309 1310 do { 1311 tsleep(bp, PRIBIO, "fdwait", hz); 1312 } while (!(bp->bio_flags & BIO_DONE)); 1313 error = bp->bio_error; 1314 1315 free(bp, M_TEMP); 1316 return (error); 1317} 1318 1319/* 1320 * Try figuring out the density of the media present in our device. 1321 */ 1322static int 1323fdautoselect(struct fd_data *fd) 1324{ 1325 struct fd_type *fdtp; 1326 struct fdc_readid id; 1327 int oopts, rv; 1328 1329 if (!(fd->ft->flags & FL_AUTO)) 1330 return (0); 1331 1332 fdtp = fd_native_types[fd->type]; 1333 fdsettype(fd, fdtp); 1334 if (!(fd->ft->flags & FL_AUTO)) 1335 return (0); 1336 1337 /* 1338 * Try reading sector ID fields, first at cylinder 0, head 0, 1339 * then at cylinder 2, head N. We don't probe cylinder 1, 1340 * since for 5.25in DD media in a HD drive, there are no data 1341 * to read (2 step pulses per media cylinder required). For 1342 * two-sided media, the second probe always goes to head 1, so 1343 * we can tell them apart from single-sided media. As a 1344 * side-effect this means that single-sided media should be 1345 * mentioned in the search list after two-sided media of an 1346 * otherwise identical density. Media with a different number 1347 * of sectors per track but otherwise identical parameters 1348 * cannot be distinguished at all. 1349 * 1350 * If we successfully read an ID field on both cylinders where 1351 * the recorded values match our expectation, we are done. 1352 * Otherwise, we try the next density entry from the table. 1353 * 1354 * Stepping to cylinder 2 has the side-effect of clearing the 1355 * unit attention bit. 1356 */ 1357 oopts = fd->options; 1358 fd->options |= FDOPT_NOERRLOG | FDOPT_NORETRY; 1359 for (; fdtp->heads; fdtp++) { 1360 fdsettype(fd, fdtp); 1361 1362 id.cyl = id.head = 0; 1363 rv = fdmisccmd(fd, BIO_RDID, &id); 1364 if (rv != 0) 1365 continue; 1366 if (id.cyl != 0 || id.head != 0 || id.secshift != fdtp->secsize) 1367 continue; 1368 id.cyl = 2; 1369 id.head = fd->ft->heads - 1; 1370 rv = fdmisccmd(fd, BIO_RDID, &id); 1371 if (id.cyl != 2 || id.head != fdtp->heads - 1 || 1372 id.secshift != fdtp->secsize) 1373 continue; 1374 if (rv == 0) 1375 break; 1376 } 1377 1378 fd->options = oopts; 1379 if (fdtp->heads == 0) { 1380 if (debugflags & 0x40) 1381 device_printf(fd->dev, "autoselection failed\n"); 1382 fdsettype(fd, fd_native_types[fd->type]); 1383 return (-1); 1384 } else { 1385 if (debugflags & 0x40) { 1386 device_printf(fd->dev, 1387 "autoselected %d KB medium\n", 1388 fd->ft->size / 2); 1389 fdprinttype(fd->ft); 1390 } 1391 return (0); 1392 } 1393} 1394 1395/* 1396 * GEOM class implementation 1397 */ 1398 1399static g_access_t fd_access; 1400static g_start_t fd_start; 1401static g_ioctl_t fd_ioctl; 1402 1403struct g_class g_fd_class = { 1404 .name = "FD", 1405 .version = G_VERSION, 1406 .start = fd_start, 1407 .access = fd_access, 1408 .ioctl = fd_ioctl, 1409}; 1410 1411static int 1412fd_access(struct g_provider *pp, int r, int w, int e) 1413{ 1414 struct fd_data *fd; 1415 struct fdc_data *fdc; 1416 int ar, aw, ae; 1417 int busy; 1418 1419 fd = pp->geom->softc; 1420 fdc = fd->fdc; 1421 1422 /* 1423 * If our provider is withering, we can only get negative requests 1424 * and we don't want to even see them 1425 */ 1426 if (pp->flags & G_PF_WITHER) 1427 return (0); 1428 1429 ar = r + pp->acr; 1430 aw = w + pp->acw; 1431 ae = e + pp->ace; 1432 1433 if (ar == 0 && aw == 0 && ae == 0) { 1434 fd->options &= ~(FDOPT_NORETRY | FDOPT_NOERRLOG | FDOPT_NOERROR); 1435 device_unbusy(fd->dev); 1436 return (0); 1437 } 1438 1439 busy = 0; 1440 if (pp->acr == 0 && pp->acw == 0 && pp->ace == 0) { 1441 if (fdmisccmd(fd, BIO_PROBE, NULL)) 1442 return (ENXIO); 1443 if (fd->flags & FD_EMPTY) 1444 return (ENXIO); 1445 if (fd->flags & FD_NEWDISK) { 1446 if (fdautoselect(fd) != 0 && 1447 (device_get_flags(fd->dev) & FD_NO_CHLINE)) { 1448 mtx_lock(&fdc->fdc_mtx); 1449 fd->flags |= FD_EMPTY; 1450 mtx_unlock(&fdc->fdc_mtx); 1451 return (ENXIO); 1452 } 1453 mtx_lock(&fdc->fdc_mtx); 1454 fd->flags &= ~FD_NEWDISK; 1455 mtx_unlock(&fdc->fdc_mtx); 1456 } 1457 device_busy(fd->dev); 1458 busy = 1; 1459 } 1460 1461 if (w > 0 && (fd->flags & FD_WP)) { 1462 if (busy) 1463 device_unbusy(fd->dev); 1464 return (EROFS); 1465 } 1466 1467 pp->sectorsize = fd->sectorsize; 1468 pp->stripesize = fd->ft->heads * fd->ft->sectrac * fd->sectorsize; 1469 pp->mediasize = pp->stripesize * fd->ft->tracks; 1470 return (0); 1471} 1472 1473static void 1474fd_start(struct bio *bp) 1475{ 1476 struct fdc_data * fdc; 1477 struct fd_data * fd; 1478 1479 fd = bp->bio_to->geom->softc; 1480 fdc = fd->fdc; 1481 bp->bio_driver1 = fd; 1482 if (bp->bio_cmd == BIO_GETATTR) { 1483 if (g_handleattr_int(bp, "GEOM::fwsectors", fd->ft->sectrac)) 1484 return; 1485 if (g_handleattr_int(bp, "GEOM::fwheads", fd->ft->heads)) 1486 return; 1487 g_io_deliver(bp, ENOIOCTL); 1488 return; 1489 } 1490 if (!(bp->bio_cmd == BIO_READ || bp->bio_cmd == BIO_WRITE)) { 1491 g_io_deliver(bp, EOPNOTSUPP); 1492 return; 1493 } 1494 bp->bio_pblkno = bp->bio_offset / fd->sectorsize; 1495 bp->bio_resid = bp->bio_length; 1496 fd_enqueue(fd, bp); 1497 return; 1498} 1499 1500static int 1501fd_ioctl(struct g_provider *pp, u_long cmd, void *data, int fflag, struct thread *td) 1502{ 1503 struct fd_data *fd; 1504 struct fdc_status *fsp; 1505 struct fdc_readid *rid; 1506 int error; 1507 1508 fd = pp->geom->softc; 1509 1510 switch (cmd) { 1511 case FD_GTYPE: /* get drive type */ 1512 *(struct fd_type *)data = *fd->ft; 1513 return (0); 1514 1515 case FD_STYPE: /* set drive type */ 1516 /* 1517 * Allow setting drive type temporarily iff 1518 * currently unset. Used for fdformat so any 1519 * user can set it, and then start formatting. 1520 */ 1521 fd->fts = *(struct fd_type *)data; 1522 if (fd->fts.sectrac) { 1523 /* XXX: check for rubbish */ 1524 fdsettype(fd, &fd->fts); 1525 } else { 1526 fdsettype(fd, fd_native_types[fd->type]); 1527 } 1528 if (debugflags & 0x40) 1529 fdprinttype(fd->ft); 1530 return (0); 1531 1532 case FD_GOPTS: /* get drive options */ 1533 *(int *)data = fd->options; 1534 return (0); 1535 1536 case FD_SOPTS: /* set drive options */ 1537 fd->options = *(int *)data; 1538 return (0); 1539 1540 case FD_CLRERR: 1541 error = priv_check(td, PRIV_DRIVER); 1542 if (error) 1543 return (error); 1544 fd->fdc->fdc_errs = 0; 1545 return (0); 1546 1547 case FD_GSTAT: 1548 fsp = (struct fdc_status *)data; 1549 if ((fd->fdc->flags & FDC_STAT_VALID) == 0) 1550 return (EINVAL); 1551 memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); 1552 return (0); 1553 1554 case FD_GDTYPE: 1555 *(enum fd_drivetype *)data = fd->type; 1556 return (0); 1557 1558 case FD_FORM: 1559 if (!(fflag & FWRITE)) 1560 return (EPERM); 1561 if (((struct fd_formb *)data)->format_version != 1562 FD_FORMAT_VERSION) 1563 return (EINVAL); /* wrong version of formatting prog */ 1564 error = fdmisccmd(fd, BIO_FMT, data); 1565 mtx_lock(&fd->fdc->fdc_mtx); 1566 fd->flags |= FD_NEWDISK; 1567 mtx_unlock(&fd->fdc->fdc_mtx); 1568 break; 1569 1570 case FD_READID: 1571 rid = (struct fdc_readid *)data; 1572 if (rid->cyl > 85 || rid->head > 1) 1573 return (EINVAL); 1574 error = fdmisccmd(fd, BIO_RDID, data); 1575 break; 1576 1577 case FIONBIO: 1578 case FIOASYNC: 1579 /* For backwards compat with old fd*(8) tools */ 1580 error = 0; 1581 break; 1582 1583 default: 1584 if (debugflags & 0x80) 1585 printf("Unknown ioctl %lx\n", cmd); 1586 error = ENOIOCTL; 1587 break; 1588 } 1589 return (error); 1590}; 1591 1592 1593 1594/* 1595 * Configuration/initialization stuff, per controller. 1596 */ 1597 1598devclass_t fdc_devclass; 1599static devclass_t fd_devclass; 1600 1601struct fdc_ivars { 1602 int fdunit; 1603 int fdtype; 1604}; 1605 1606void 1607fdc_release_resources(struct fdc_data *fdc) 1608{ 1609 device_t dev; 1610 struct resource *last; 1611 int i; 1612 1613 dev = fdc->fdc_dev; 1614 if (fdc->fdc_intr) 1615 bus_teardown_intr(dev, fdc->res_irq, fdc->fdc_intr); 1616 fdc->fdc_intr = NULL; 1617 if (fdc->res_irq != NULL) 1618 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 1619 fdc->res_irq); 1620 fdc->res_irq = NULL; 1621 last = NULL; 1622 for (i = 0; i < FDC_MAXREG; i++) { 1623 if (fdc->resio[i] != NULL && fdc->resio[i] != last) { 1624 bus_release_resource(dev, SYS_RES_IOPORT, 1625 fdc->ridio[i], fdc->resio[i]); 1626 last = fdc->resio[i]; 1627 fdc->resio[i] = NULL; 1628 } 1629 } 1630 if (fdc->res_drq != NULL) 1631 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 1632 fdc->res_drq); 1633 fdc->res_drq = NULL; 1634} 1635 1636int 1637fdc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 1638{ 1639 struct fdc_ivars *ivars = device_get_ivars(child); 1640 1641 switch (which) { 1642 case FDC_IVAR_FDUNIT: 1643 *result = ivars->fdunit; 1644 break; 1645 case FDC_IVAR_FDTYPE: 1646 *result = ivars->fdtype; 1647 break; 1648 default: 1649 return (ENOENT); 1650 } 1651 return (0); 1652} 1653 1654int 1655fdc_write_ivar(device_t dev, device_t child, int which, uintptr_t value) 1656{ 1657 struct fdc_ivars *ivars = device_get_ivars(child); 1658 1659 switch (which) { 1660 case FDC_IVAR_FDUNIT: 1661 ivars->fdunit = value; 1662 break; 1663 case FDC_IVAR_FDTYPE: 1664 ivars->fdtype = value; 1665 break; 1666 default: 1667 return (ENOENT); 1668 } 1669 return (0); 1670} 1671 1672int 1673fdc_initial_reset(device_t dev, struct fdc_data *fdc) 1674{ 1675 int ic_type, part_id; 1676 1677 /* 1678 * A status value of 0xff is very unlikely, but not theoretically 1679 * impossible, but it is far more likely to indicate an empty bus. 1680 */ 1681 if (fdsts_rd(fdc) == 0xff) 1682 return (ENXIO); 1683 1684 /* 1685 * Assert a reset to the floppy controller and check that the status 1686 * register goes to zero. 1687 */ 1688 fdout_wr(fdc, 0); 1689 fdout_wr(fdc, 0); 1690 if (fdsts_rd(fdc) != 0) 1691 return (ENXIO); 1692 1693 /* 1694 * Clear the reset and see it come ready. 1695 */ 1696 fdout_wr(fdc, FDO_FRST); 1697 DELAY(100); 1698 if (fdsts_rd(fdc) != 0x80) 1699 return (ENXIO); 1700 1701 /* Then, see if it can handle a command. */ 1702 if (fdc_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(6, 240), 1703 NE7_SPEC_2(31, 0), 0)) 1704 return (ENXIO); 1705 1706 /* 1707 * Try to identify the chip. 1708 * 1709 * The i8272 datasheet documents that unknown commands 1710 * will return ST0 as 0x80. The i8272 is supposedly identical 1711 * to the NEC765. 1712 * The i82077SL datasheet says 0x90 for the VERSION command, 1713 * and several "superio" chips emulate this. 1714 */ 1715 if (fdc_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type)) 1716 return (ENXIO); 1717 if (fdc_cmd(fdc, 1, 0x18, 1, &part_id)) 1718 return (ENXIO); 1719 if (bootverbose) 1720 device_printf(dev, 1721 "ic_type %02x part_id %02x\n", ic_type, part_id); 1722 switch (ic_type & 0xff) { 1723 case 0x80: 1724 device_set_desc(dev, "NEC 765 or clone"); 1725 fdc->fdct = FDC_NE765; 1726 break; 1727 case 0x81: 1728 case 0x90: 1729 device_set_desc(dev, 1730 "Enhanced floppy controller"); 1731 fdc->fdct = FDC_ENHANCED; 1732 break; 1733 default: 1734 device_set_desc(dev, "Generic floppy controller"); 1735 fdc->fdct = FDC_UNKNOWN; 1736 break; 1737 } 1738 return (0); 1739} 1740 1741int 1742fdc_detach(device_t dev) 1743{ 1744 struct fdc_data *fdc; 1745 int error; 1746 1747 fdc = device_get_softc(dev); 1748 1749 /* have our children detached first */ 1750 if ((error = bus_generic_detach(dev))) 1751 return (error); 1752 1753 if (fdc->fdc_intr) 1754 bus_teardown_intr(dev, fdc->res_irq, fdc->fdc_intr); 1755 fdc->fdc_intr = NULL; 1756 1757 /* kill worker thread */ 1758 mtx_lock(&fdc->fdc_mtx); 1759 fdc->flags |= FDC_KTHREAD_EXIT; 1760 wakeup(&fdc->head); 1761 while ((fdc->flags & FDC_KTHREAD_ALIVE) != 0) 1762 msleep(fdc->fdc_thread, &fdc->fdc_mtx, PRIBIO, "fdcdet", 0); 1763 mtx_unlock(&fdc->fdc_mtx); 1764 1765 /* reset controller, turn motor off */ 1766 fdout_wr(fdc, 0); 1767 1768 if (!(fdc->flags & FDC_NODMA)) 1769 isa_dma_release(fdc->dmachan); 1770 fdc_release_resources(fdc); 1771 mtx_destroy(&fdc->fdc_mtx); 1772 return (0); 1773} 1774 1775/* 1776 * Add a child device to the fdc controller. It will then be probed etc. 1777 */ 1778device_t 1779fdc_add_child(device_t dev, const char *name, int unit) 1780{ 1781 struct fdc_ivars *ivar; 1782 device_t child; 1783 1784 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT | M_ZERO); 1785 if (ivar == NULL) 1786 return (NULL); 1787 child = device_add_child(dev, name, unit); 1788 if (child == NULL) { 1789 free(ivar, M_DEVBUF); 1790 return (NULL); 1791 } 1792 device_set_ivars(child, ivar); 1793 ivar->fdunit = unit; 1794 ivar->fdtype = FDT_NONE; 1795 if (resource_disabled(name, unit)) 1796 device_disable(child); 1797 return (child); 1798} 1799 1800int 1801fdc_attach(device_t dev) 1802{ 1803 struct fdc_data *fdc; 1804 int error; 1805 1806 fdc = device_get_softc(dev); 1807 fdc->fdc_dev = dev; 1808 error = fdc_initial_reset(dev, fdc); 1809 if (error) { 1810 device_printf(dev, "does not respond\n"); 1811 return (error); 1812 } 1813 error = bus_setup_intr(dev, fdc->res_irq, 1814 INTR_TYPE_BIO | INTR_ENTROPY | 1815 ((fdc->flags & FDC_NOFAST) ? INTR_MPSAFE : 0), 1816 ((fdc->flags & FDC_NOFAST) ? NULL : fdc_intr_fast), 1817 ((fdc->flags & FDC_NOFAST) ? fdc_intr : NULL), 1818 fdc, &fdc->fdc_intr); 1819 if (error) { 1820 device_printf(dev, "cannot setup interrupt\n"); 1821 return (error); 1822 } 1823 if (!(fdc->flags & FDC_NODMA)) { 1824 error = isa_dma_acquire(fdc->dmachan); 1825 if (!error) { 1826 error = isa_dma_init(fdc->dmachan, 1827 MAX_BYTES_PER_CYL, M_WAITOK); 1828 if (error) 1829 isa_dma_release(fdc->dmachan); 1830 } 1831 if (error) 1832 return (error); 1833 } 1834 fdc->fdcu = device_get_unit(dev); 1835 fdc->flags |= FDC_NEEDS_RESET; 1836 1837 mtx_init(&fdc->fdc_mtx, "fdc lock", NULL, MTX_DEF); 1838 1839 /* reset controller, turn motor off, clear fdout mirror reg */ 1840 fdout_wr(fdc, fdc->fdout = 0); 1841 bioq_init(&fdc->head); 1842 1843 settle = hz / 8; 1844 1845 return (0); 1846} 1847 1848void 1849fdc_start_worker(device_t dev) 1850{ 1851 struct fdc_data *fdc; 1852 1853 fdc = device_get_softc(dev); 1854 kproc_create(fdc_thread, fdc, &fdc->fdc_thread, 0, 0, 1855 "fdc%d", device_get_unit(dev)); 1856} 1857 1858int 1859fdc_hints_probe(device_t dev) 1860{ 1861 const char *name, *dname; 1862 int i, error, dunit; 1863 1864 /* 1865 * Probe and attach any children. We should probably detect 1866 * devices from the BIOS unless overridden. 1867 */ 1868 name = device_get_nameunit(dev); 1869 i = 0; 1870 while ((resource_find_match(&i, &dname, &dunit, "at", name)) == 0) { 1871 resource_int_value(dname, dunit, "drive", &dunit); 1872 fdc_add_child(dev, dname, dunit); 1873 } 1874 1875 if ((error = bus_generic_attach(dev)) != 0) 1876 return (error); 1877 return (0); 1878} 1879 1880int 1881fdc_print_child(device_t me, device_t child) 1882{ 1883 int retval = 0, flags; 1884 1885 retval += bus_print_child_header(me, child); 1886 retval += printf(" on %s drive %d", device_get_nameunit(me), 1887 fdc_get_fdunit(child)); 1888 if ((flags = device_get_flags(me)) != 0) 1889 retval += printf(" flags %#x", flags); 1890 retval += printf("\n"); 1891 1892 return (retval); 1893} 1894 1895/* 1896 * Configuration/initialization, per drive. 1897 */ 1898static int 1899fd_probe(device_t dev) 1900{ 1901 int unit; 1902 int i; 1903 u_int st0, st3; 1904 struct fd_data *fd; 1905 struct fdc_data *fdc; 1906 int fdsu; 1907 int flags, type; 1908 1909 fdsu = fdc_get_fdunit(dev); 1910 fd = device_get_softc(dev); 1911 fdc = device_get_softc(device_get_parent(dev)); 1912 flags = device_get_flags(dev); 1913 1914 fd->dev = dev; 1915 fd->fdc = fdc; 1916 fd->fdsu = fdsu; 1917 unit = device_get_unit(dev); 1918 1919 /* Auto-probe if fdinfo is present, but always allow override. */ 1920 type = flags & FD_TYPEMASK; 1921 if (type == FDT_NONE && (type = fdc_get_fdtype(dev)) != FDT_NONE) { 1922 fd->type = type; 1923 goto done; 1924 } else { 1925 /* make sure fdautoselect() will be called */ 1926 fd->flags = FD_EMPTY; 1927 fd->type = type; 1928 } 1929 1930#if defined(__i386__) || defined(__amd64__) 1931 if (fd->type == FDT_NONE && (unit == 0 || unit == 1)) { 1932 /* Look up what the BIOS thinks we have. */ 1933 if (unit == 0) 1934 fd->type = (rtcin(RTC_FDISKETTE) & 0xf0) >> 4; 1935 else 1936 fd->type = rtcin(RTC_FDISKETTE) & 0x0f; 1937 if (fd->type == FDT_288M_1) 1938 fd->type = FDT_288M; 1939 } 1940#endif /* __i386__ || __amd64__ */ 1941 /* is there a unit? */ 1942 if (fd->type == FDT_NONE) 1943 return (ENXIO); 1944 1945 mtx_lock(&fdc->fdc_mtx); 1946 1947 /* select it */ 1948 fd_select(fd); 1949 fd_motor(fd, 1); 1950 fdc->fd = fd; 1951 fdc_reset(fdc); /* XXX reset, then unreset, etc. */ 1952 DELAY(1000000); /* 1 sec */ 1953 1954 if ((flags & FD_NO_PROBE) == 0) { 1955 /* If we're at track 0 first seek inwards. */ 1956 if ((fdc_sense_drive(fdc, &st3) == 0) && 1957 (st3 & NE7_ST3_T0)) { 1958 /* Seek some steps... */ 1959 if (fdc_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 1960 /* ...wait a moment... */ 1961 DELAY(300000); 1962 /* make ctrlr happy: */ 1963 fdc_sense_int(fdc, NULL, NULL); 1964 } 1965 } 1966 1967 for (i = 0; i < 2; i++) { 1968 /* 1969 * we must recalibrate twice, just in case the 1970 * heads have been beyond cylinder 76, since 1971 * most FDCs still barf when attempting to 1972 * recalibrate more than 77 steps 1973 */ 1974 /* go back to 0: */ 1975 if (fdc_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1976 /* a second being enough for full stroke seek*/ 1977 DELAY(i == 0 ? 1000000 : 300000); 1978 1979 /* anything responding? */ 1980 if (fdc_sense_int(fdc, &st0, NULL) == 0 && 1981 (st0 & NE7_ST0_EC) == 0) 1982 break; /* already probed successfully */ 1983 } 1984 } 1985 } 1986 1987 fd_motor(fd, 0); 1988 fdc->fd = NULL; 1989 mtx_unlock(&fdc->fdc_mtx); 1990 1991 if ((flags & FD_NO_PROBE) == 0 && 1992 (st0 & NE7_ST0_EC) != 0) /* no track 0 -> no drive present */ 1993 return (ENXIO); 1994 1995done: 1996 1997 switch (fd->type) { 1998 case FDT_12M: 1999 device_set_desc(dev, "1200-KB 5.25\" drive"); 2000 break; 2001 case FDT_144M: 2002 device_set_desc(dev, "1440-KB 3.5\" drive"); 2003 break; 2004 case FDT_288M: 2005 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 2006 break; 2007 case FDT_360K: 2008 device_set_desc(dev, "360-KB 5.25\" drive"); 2009 break; 2010 case FDT_720K: 2011 device_set_desc(dev, "720-KB 3.5\" drive"); 2012 break; 2013 default: 2014 return (ENXIO); 2015 } 2016 fd->track = FD_NO_TRACK; 2017 fd->fdc = fdc; 2018 fd->fdsu = fdsu; 2019 fd->options = 0; 2020 callout_init_mtx(&fd->toffhandle, &fd->fdc->fdc_mtx, 0); 2021 2022 /* initialize densities for subdevices */ 2023 fdsettype(fd, fd_native_types[fd->type]); 2024 return (0); 2025} 2026 2027/* 2028 * We have to do this in a geom event because GEOM is not running 2029 * when fd_attach() is. 2030 * XXX: move fd_attach after geom like ata/scsi disks 2031 */ 2032static void 2033fd_attach2(void *arg, int flag) 2034{ 2035 struct fd_data *fd; 2036 2037 fd = arg; 2038 2039 fd->fd_geom = g_new_geomf(&g_fd_class, 2040 "fd%d", device_get_unit(fd->dev)); 2041 fd->fd_provider = g_new_providerf(fd->fd_geom, "%s", fd->fd_geom->name); 2042 fd->fd_geom->softc = fd; 2043 g_error_provider(fd->fd_provider, 0); 2044} 2045 2046static int 2047fd_attach(device_t dev) 2048{ 2049 struct fd_data *fd; 2050 2051 fd = device_get_softc(dev); 2052 g_post_event(fd_attach2, fd, M_WAITOK, NULL); 2053 fd->flags |= FD_EMPTY; 2054 bioq_init(&fd->fd_bq); 2055 2056 return (0); 2057} 2058 2059static void 2060fd_detach_geom(void *arg, int flag) 2061{ 2062 struct fd_data *fd = arg; 2063 2064 g_topology_assert(); 2065 g_wither_geom(fd->fd_geom, ENXIO); 2066} 2067 2068static int 2069fd_detach(device_t dev) 2070{ 2071 struct fd_data *fd; 2072 2073 fd = device_get_softc(dev); 2074 g_waitfor_event(fd_detach_geom, fd, M_WAITOK, NULL); 2075 while (device_get_state(dev) == DS_BUSY) 2076 tsleep(fd, PZERO, "fdd", hz/10); 2077 callout_drain(&fd->toffhandle); 2078 2079 return (0); 2080} 2081 2082static device_method_t fd_methods[] = { 2083 /* Device interface */ 2084 DEVMETHOD(device_probe, fd_probe), 2085 DEVMETHOD(device_attach, fd_attach), 2086 DEVMETHOD(device_detach, fd_detach), 2087 DEVMETHOD(device_shutdown, bus_generic_shutdown), 2088 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 2089 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 2090 { 0, 0 } 2091}; 2092 2093static driver_t fd_driver = { 2094 "fd", 2095 fd_methods, 2096 sizeof(struct fd_data) 2097}; 2098 2099static int 2100fdc_modevent(module_t mod, int type, void *data) 2101{ 2102 2103 return (g_modevent(NULL, type, &g_fd_class)); 2104} 2105 2106DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, fdc_modevent, 0); 2107