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