1 /* 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Don Ahn. 7 * 8 * Libretto PCMCIA floppy support by David Horwitt (dhorwitt@ucsd.edu) 9 * aided by the Linux floppy driver modifications from David Bateman 10 * (dbateman@eng.uts.edu.au). 11 * 12 * Copyright (c) 1993, 1994 by 13 * jc@irbs.UUCP (John Capo) 14 * vak@zebub.msk.su (Serge Vakulenko) 15 * ache@astral.msk.su (Andrew A. Chernov) 16 * 17 * Copyright (c) 1993, 1994, 1995 by 18 * joerg_wunsch@uriah.sax.de (Joerg Wunsch) 19 * dufault@hda.com (Peter Dufault) 20 * 21 * Redistribution and use in source and binary forms, with or without 22 * modification, are permitted provided that the following conditions 23 * are met: 24 * 1. Redistributions of source code must retain the above copyright 25 * notice, this list of conditions and the following disclaimer. 26 * 2. Redistributions in binary form must reproduce the above copyright 27 * notice, this list of conditions and the following disclaimer in the 28 * documentation and/or other materials provided with the distribution. 29 * 3. All advertising materials mentioning features or use of this software 30 * must display the following acknowledgement: 31 * This product includes software developed by the University of 32 * California, Berkeley and its contributors. 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 * $Id: fd.c,v 1.148 1999/07/04 14:58:32 phk Exp $ 51 * 52 */ 53 54 #include "fd.h" 55 #include "opt_devfs.h" 56 #include "opt_fdc.h" 57 58 #if NFDC > 0 59 60 #include <sys/param.h> 61 #include <sys/systm.h> 62 #include <sys/kernel.h> 63 #include <sys/buf.h> 64 #include <sys/bus.h> 65 #include <sys/conf.h> 66 #include <sys/disklabel.h> 67 #include <sys/devicestat.h> 68 #include <sys/fcntl.h> 69 #include <sys/malloc.h> 70 #include <sys/module.h> 71 #include <sys/proc.h> 72 #include <sys/syslog.h> 73 74 #include <sys/bus.h> 75 #include <machine/bus.h> 76 #include <sys/rman.h> 77 78 #include <machine/clock.h> 79 #include <machine/ioctl_fd.h> 80 #include <machine/resource.h> 81 #include <machine/stdarg.h> 82 83 #ifdef DEVFS 84 #include <sys/devfsext.h> 85 #endif /* DEVFS */ 86 87 #include <isa/isavar.h> 88 #include <isa/isareg.h> 89 #include <isa/fdreg.h> 90 #include <isa/fdc.h> 91 #include <isa/rtc.h> 92 93 #ifdef FDC_YE 94 #undef FDC_YE 95 #warning "fix FDC_YE! - newbus casualty" 96 #endif 97 98 /* misuse a flag to identify format operation */ 99 #define B_FORMAT B_XXX 100 101 /* configuration flags */ 102 #define FDC_PRETEND_D0 (1 << 0) /* pretend drive 0 to be there */ 103 #ifdef FDC_YE 104 #define FDC_IS_PCMCIA (1 << 1) /* if successful probe, then it's 105 a PCMCIA device */ 106 #endif 107 108 /* internally used only, not really from CMOS: */ 109 #define RTCFDT_144M_PRETENDED 0x1000 110 111 /* error returns for fd_cmd() */ 112 #define FD_FAILED -1 113 #define FD_NOT_VALID -2 114 #define FDC_ERRMAX 100 /* do not log more */ 115 116 #define NUMTYPES 14 117 #define NUMDENS (NUMTYPES - 6) 118 119 /* These defines (-1) must match index for fd_types */ 120 #define F_TAPE_TYPE 0x020 /* bit for fd_types to indicate tape */ 121 #define NO_TYPE 0 /* must match NO_TYPE in ft.c */ 122 #define FD_1720 1 123 #define FD_1480 2 124 #define FD_1440 3 125 #define FD_1200 4 126 #define FD_820 5 127 #define FD_800 6 128 #define FD_720 7 129 #define FD_360 8 130 131 #define FD_1480in5_25 9 132 #define FD_1440in5_25 10 133 #define FD_820in5_25 11 134 #define FD_800in5_25 12 135 #define FD_720in5_25 13 136 #define FD_360in5_25 14 137 138 139 static struct fd_type fd_types[NUMTYPES] = 140 { 141 { 21,2,0xFF,0x04,82,3444,1,FDC_500KBPS,2,0x0C,2 }, /* 1.72M in HD 3.5in */ 142 { 18,2,0xFF,0x1B,82,2952,1,FDC_500KBPS,2,0x6C,1 }, /* 1.48M in HD 3.5in */ 143 { 18,2,0xFF,0x1B,80,2880,1,FDC_500KBPS,2,0x6C,1 }, /* 1.44M in HD 3.5in */ 144 { 15,2,0xFF,0x1B,80,2400,1,FDC_500KBPS,2,0x54,1 }, /* 1.2M in HD 5.25/3.5 */ 145 { 10,2,0xFF,0x10,82,1640,1,FDC_250KBPS,2,0x2E,1 }, /* 820K in HD 3.5in */ 146 { 10,2,0xFF,0x10,80,1600,1,FDC_250KBPS,2,0x2E,1 }, /* 800K in HD 3.5in */ 147 { 9,2,0xFF,0x20,80,1440,1,FDC_250KBPS,2,0x50,1 }, /* 720K in HD 3.5in */ 148 { 9,2,0xFF,0x2A,40, 720,1,FDC_250KBPS,2,0x50,1 }, /* 360K in DD 5.25in */ 149 150 { 18,2,0xFF,0x02,82,2952,1,FDC_500KBPS,2,0x02,2 }, /* 1.48M in HD 5.25in */ 151 { 18,2,0xFF,0x02,80,2880,1,FDC_500KBPS,2,0x02,2 }, /* 1.44M in HD 5.25in */ 152 { 10,2,0xFF,0x10,82,1640,1,FDC_300KBPS,2,0x2E,1 }, /* 820K in HD 5.25in */ 153 { 10,2,0xFF,0x10,80,1600,1,FDC_300KBPS,2,0x2E,1 }, /* 800K in HD 5.25in */ 154 { 9,2,0xFF,0x20,80,1440,1,FDC_300KBPS,2,0x50,1 }, /* 720K in HD 5.25in */ 155 { 9,2,0xFF,0x23,40, 720,2,FDC_300KBPS,2,0x50,1 }, /* 360K in HD 5.25in */ 156 }; 157 158 #define DRVS_PER_CTLR 2 /* 2 floppies */ 159 160 /***********************************************************************\ 161 * Per controller structure. * 162 \***********************************************************************/ 163 static devclass_t fdc_devclass; 164 165 /***********************************************************************\ 166 * Per drive structure. * 167 * N per controller (DRVS_PER_CTLR) * 168 \***********************************************************************/ 169 struct fd_data { 170 struct fdc_data *fdc; /* pointer to controller structure */ 171 int fdsu; /* this units number on this controller */ 172 int type; /* Drive type (FD_1440...) */ 173 struct fd_type *ft; /* pointer to the type descriptor */ 174 int flags; 175 #define FD_OPEN 0x01 /* it's open */ 176 #define FD_ACTIVE 0x02 /* it's active */ 177 #define FD_MOTOR 0x04 /* motor should be on */ 178 #define FD_MOTOR_WAIT 0x08 /* motor coming up */ 179 int skip; 180 int hddrv; 181 #define FD_NO_TRACK -2 182 int track; /* where we think the head is */ 183 int options; /* user configurable options, see ioctl_fd.h */ 184 struct callout_handle toffhandle; 185 struct callout_handle tohandle; 186 struct devstat device_stats; 187 #ifdef DEVFS 188 void *bdevs[1 + NUMDENS + MAXPARTITIONS]; 189 void *cdevs[1 + NUMDENS + MAXPARTITIONS]; 190 #endif 191 device_t dev; 192 fdu_t fdu; 193 }; 194 static devclass_t fd_devclass; 195 196 /***********************************************************************\ 197 * Throughout this file the following conventions will be used: * 198 * fd is a pointer to the fd_data struct for the drive in question * 199 * fdc is a pointer to the fdc_data struct for the controller * 200 * fdu is the floppy drive unit number * 201 * fdcu is the floppy controller unit number * 202 * fdsu is the floppy drive unit number on that controller. (sub-unit) * 203 \***********************************************************************/ 204 205 #ifdef FDC_YE 206 #include "card.h" 207 static int yeattach(struct isa_device *); 208 #endif 209 210 /* needed for ft driver, thus exported */ 211 int in_fdc(struct fdc_data *); 212 int out_fdc(struct fdc_data *, int); 213 214 /* internal functions */ 215 static void fdc_add_device(device_t, const char *, int); 216 static void fdc_intr(void *); 217 static void set_motor(struct fdc_data *, int, int); 218 # define TURNON 1 219 # define TURNOFF 0 220 static timeout_t fd_turnoff; 221 static timeout_t fd_motor_on; 222 static void fd_turnon(struct fd_data *); 223 static void fdc_reset(fdc_p); 224 static int fd_in(struct fdc_data *, int *); 225 static void fdstart(struct fdc_data *); 226 static timeout_t fd_iotimeout; 227 static timeout_t fd_pseudointr; 228 static int fdstate(struct fdc_data *); 229 static int retrier(struct fdc_data *); 230 static int fdformat(dev_t, struct fd_formb *, struct proc *); 231 232 static int enable_fifo(fdc_p fdc); 233 234 static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */ 235 236 237 #define DEVIDLE 0 238 #define FINDWORK 1 239 #define DOSEEK 2 240 #define SEEKCOMPLETE 3 241 #define IOCOMPLETE 4 242 #define RECALCOMPLETE 5 243 #define STARTRECAL 6 244 #define RESETCTLR 7 245 #define SEEKWAIT 8 246 #define RECALWAIT 9 247 #define MOTORWAIT 10 248 #define IOTIMEDOUT 11 249 #define RESETCOMPLETE 12 250 #ifdef FDC_YE 251 #define PIOREAD 13 252 #endif 253 254 #ifdef FDC_DEBUG 255 static char const * const fdstates[] = 256 { 257 "DEVIDLE", 258 "FINDWORK", 259 "DOSEEK", 260 "SEEKCOMPLETE", 261 "IOCOMPLETE", 262 "RECALCOMPLETE", 263 "STARTRECAL", 264 "RESETCTLR", 265 "SEEKWAIT", 266 "RECALWAIT", 267 "MOTORWAIT", 268 "IOTIMEDOUT", 269 "RESETCOMPLETE", 270 #ifdef FDC_YE 271 "PIOREAD", 272 #endif 273 }; 274 275 /* CAUTION: fd_debug causes huge amounts of logging output */ 276 static int volatile fd_debug = 0; 277 #define TRACE0(arg) if(fd_debug) printf(arg) 278 #define TRACE1(arg1, arg2) if(fd_debug) printf(arg1, arg2) 279 #else /* FDC_DEBUG */ 280 #define TRACE0(arg) 281 #define TRACE1(arg1, arg2) 282 #endif /* FDC_DEBUG */ 283 284 #ifdef FDC_YE 285 #if NCARD > 0 286 #include <sys/select.h> 287 #include <sys/module.h> 288 #include <pccard/cardinfo.h> 289 #include <pccard/driver.h> 290 #include <pccard/slot.h> 291 292 /* 293 * PC-Card (PCMCIA) specific code. 294 */ 295 static int yeinit(struct pccard_devinfo *); /* init device */ 296 static void yeunload(struct pccard_devinfo *); /* Disable driver */ 297 static int yeintr(struct pccard_devinfo *); /* Interrupt handler */ 298 299 PCCARD_MODULE(fdc, yeinit, yeunload, yeintr, 0, bio_imask); 300 301 /* 302 * this is the secret PIO data port (offset from base) 303 */ 304 #define FDC_YE_DATAPORT 6 305 306 /* 307 * Initialize the device - called from Slot manager. 308 */ 309 static int yeinit(struct pccard_devinfo *devi) 310 { 311 fdc_p fdc = &fdc_data[devi->isahd.id_unit]; 312 313 /* validate unit number. */ 314 if (devi->isahd.id_unit >= NFDC) 315 return(ENODEV); 316 fdc->baseport = devi->isahd.id_iobase; 317 /* 318 * reset controller 319 */ 320 outb(fdc->baseport+FDOUT, 0); 321 DELAY(100); 322 outb(fdc->baseport+FDOUT, FDO_FRST); 323 324 /* 325 * wire into system 326 */ 327 if (yeattach(&devi->isahd) == 0) 328 return(ENXIO); 329 330 return(0); 331 } 332 333 /* 334 * yeunload - unload the driver and clear the table. 335 * XXX TODO: 336 * This is usually called when the card is ejected, but 337 * can be caused by a modunload of a controller driver. 338 * The idea is to reset the driver's view of the device 339 * and ensure that any driver entry points such as 340 * read and write do not hang. 341 */ 342 static void yeunload(struct pccard_devinfo *devi) 343 { 344 if (fd_data[devi->isahd.id_unit].type == NO_TYPE) 345 return; 346 347 /* 348 * this prevents Fdopen() and fdstrategy() from attempting 349 * to access unloaded controller 350 */ 351 fd_data[devi->isahd.id_unit].type = NO_TYPE; 352 353 printf("fdc%d: unload\n", devi->isahd.id_unit); 354 } 355 356 /* 357 * yeintr - Shared interrupt called from 358 * front end of PC-Card handler. 359 */ 360 static int yeintr(struct pccard_devinfo *devi) 361 { 362 fdintr((fdcu_t)devi->isahd.id_unit); 363 return(1); 364 } 365 #endif /* NCARD > 0 */ 366 #endif /* FDC_YE */ 367 368 static d_open_t Fdopen; /* NOTE, not fdopen */ 369 static d_close_t fdclose; 370 static d_ioctl_t fdioctl; 371 static d_strategy_t fdstrategy; 372 373 #define CDEV_MAJOR 9 374 #define BDEV_MAJOR 2 375 376 static struct cdevsw fd_cdevsw = { 377 /* open */ Fdopen, 378 /* close */ fdclose, 379 /* read */ physread, 380 /* write */ physwrite, 381 /* ioctl */ fdioctl, 382 /* stop */ nostop, 383 /* reset */ noreset, 384 /* devtotty */ nodevtotty, 385 /* poll */ nopoll, 386 /* mmap */ nommap, 387 /* strategy */ fdstrategy, 388 /* name */ "fd", 389 /* parms */ noparms, 390 /* maj */ CDEV_MAJOR, 391 /* dump */ nodump, 392 /* psize */ nopsize, 393 /* flags */ D_DISK, 394 /* maxio */ 0, 395 /* bmaj */ BDEV_MAJOR 396 }; 397 398 static int 399 fdc_err(struct fdc_data *fdc, const char *s) 400 { 401 fdc->fdc_errs++; 402 if (s) { 403 if (fdc->fdc_errs < FDC_ERRMAX) { 404 device_print_prettyname(fdc->fdc_dev); 405 printf("%s", s); 406 } else if (fdc->fdc_errs == FDC_ERRMAX) { 407 device_print_prettyname(fdc->fdc_dev); 408 printf("too many errors, not logging any more\n"); 409 } 410 } 411 412 return FD_FAILED; 413 } 414 415 /* 416 * fd_cmd: Send a command to the chip. Takes a varargs with this structure: 417 * Unit number, 418 * # of output bytes, output bytes as ints ..., 419 * # of input bytes, input bytes as ints ... 420 */ 421 static int 422 fd_cmd(struct fdc_data *fdc, int n_out, ...) 423 { 424 u_char cmd; 425 int n_in; 426 int n; 427 va_list ap; 428 429 va_start(ap, n_out); 430 cmd = (u_char)(va_arg(ap, int)); 431 va_end(ap); 432 va_start(ap, n_out); 433 for (n = 0; n < n_out; n++) 434 { 435 if (out_fdc(fdc, va_arg(ap, int)) < 0) 436 { 437 char msg[50]; 438 snprintf(msg, sizeof(msg), 439 "cmd %x failed at out byte %d of %d\n", 440 cmd, n + 1, n_out); 441 return fdc_err(fdc, msg); 442 } 443 } 444 n_in = va_arg(ap, int); 445 for (n = 0; n < n_in; n++) 446 { 447 int *ptr = va_arg(ap, int *); 448 if (fd_in(fdc, ptr) < 0) 449 { 450 char msg[50]; 451 snprintf(msg, sizeof(msg), 452 "cmd %02x failed at in byte %d of %d\n", 453 cmd, n + 1, n_in); 454 return fdc_err(fdc, msg); 455 } 456 } 457 458 return 0; 459 } 460 461 static int 462 enable_fifo(fdc_p fdc) 463 { 464 int i, j; 465 466 if ((fdc->flags & FDC_HAS_FIFO) == 0) { 467 468 /* 469 * XXX: 470 * Cannot use fd_cmd the normal way here, since 471 * this might be an invalid command. Thus we send the 472 * first byte, and check for an early turn of data directon. 473 */ 474 475 if (out_fdc(fdc, I8207X_CONFIGURE) < 0) 476 return fdc_err(fdc, "Enable FIFO failed\n"); 477 478 /* If command is invalid, return */ 479 j = 100000; 480 while ((i = inb(fdc->baseport + FDSTS) & (NE7_DIO | NE7_RQM)) 481 != NE7_RQM && j-- > 0) 482 if (i == (NE7_DIO | NE7_RQM)) { 483 fdc_reset(fdc); 484 return FD_FAILED; 485 } 486 if (j<0 || 487 fd_cmd(fdc, 3, 488 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) { 489 fdc_reset(fdc); 490 return fdc_err(fdc, "Enable FIFO failed\n"); 491 } 492 fdc->flags |= FDC_HAS_FIFO; 493 return 0; 494 } 495 if (fd_cmd(fdc, 4, 496 I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) 497 return fdc_err(fdc, "Re-enable FIFO failed\n"); 498 return 0; 499 } 500 501 static int 502 fd_sense_drive_status(fdc_p fdc, int *st3p) 503 { 504 int st3; 505 506 if (fd_cmd(fdc, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3)) 507 { 508 return fdc_err(fdc, "Sense Drive Status failed\n"); 509 } 510 if (st3p) 511 *st3p = st3; 512 513 return 0; 514 } 515 516 static int 517 fd_sense_int(fdc_p fdc, int *st0p, int *cylp) 518 { 519 int cyl, st0, ret; 520 521 ret = fd_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); 522 if (ret) { 523 (void)fdc_err(fdc, 524 "sense intr err reading stat reg 0\n"); 525 return ret; 526 } 527 528 if (st0p) 529 *st0p = st0; 530 531 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { 532 /* 533 * There doesn't seem to have been an interrupt. 534 */ 535 return FD_NOT_VALID; 536 } 537 538 if (fd_in(fdc, &cyl) < 0) { 539 return fdc_err(fdc, "can't get cyl num\n"); 540 } 541 542 if (cylp) 543 *cylp = cyl; 544 545 return 0; 546 } 547 548 549 static int 550 fd_read_status(fdc_p fdc, int fdsu) 551 { 552 int i, ret; 553 554 for (i = 0; i < 7; i++) { 555 /* 556 * XXX types are poorly chosen. Only bytes can by read 557 * from the hardware, but fdc->status[] wants u_ints and 558 * fd_in() gives ints. 559 */ 560 int status; 561 562 ret = fd_in(fdc, &status); 563 fdc->status[i] = status; 564 if (ret != 0) 565 break; 566 } 567 568 if (ret == 0) 569 fdc->flags |= FDC_STAT_VALID; 570 else 571 fdc->flags &= ~FDC_STAT_VALID; 572 573 return ret; 574 } 575 576 /****************************************************************************/ 577 /* autoconfiguration stuff */ 578 /****************************************************************************/ 579 580 static int 581 fdc_probe(device_t dev) 582 { 583 int error, i, ic_type; 584 struct fdc_data *fdc; 585 char myname[8]; /* better be long enough */ 586 587 /* No pnp support */ 588 if (isa_get_vendorid(dev)) 589 return (ENXIO); 590 591 fdc = device_get_softc(dev); 592 bzero(fdc, sizeof *fdc); 593 fdc->fdc_dev = dev; 594 fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0; 595 fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0; 596 597 fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT, 598 &fdc->rid_ioport, 0ul, ~0ul, 599 IO_FDCSIZE, RF_ACTIVE); 600 if (fdc->res_ioport == 0) { 601 device_print_prettyname(dev); 602 printf("cannot reserve I/O port range\n"); 603 error = ENXIO; 604 goto out; 605 } 606 fdc->baseport = fdc->res_ioport->r_start; 607 608 fdc->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ, 609 &fdc->rid_irq, 0ul, ~0ul, 1, 610 RF_ACTIVE); 611 if (fdc->res_irq == 0) { 612 device_print_prettyname(dev); 613 printf("cannot reserve interrupt line\n"); 614 error = ENXIO; 615 goto out; 616 } 617 fdc->res_drq = bus_alloc_resource(dev, SYS_RES_DRQ, 618 &fdc->rid_drq, 0ul, ~0ul, 1, 619 RF_ACTIVE); 620 if (fdc->res_drq == 0) { 621 device_print_prettyname(dev); 622 printf("cannot reserve DMA request line\n"); 623 error = ENXIO; 624 goto out; 625 } 626 fdc->dmachan = fdc->res_drq->r_start; 627 error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq, 628 INTR_TYPE_BIO, fdc_intr, fdc, &fdc->fdc_intr); 629 630 /* First - lets reset the floppy controller */ 631 outb(fdc->baseport + FDOUT, 0); 632 DELAY(100); 633 outb(fdc->baseport + FDOUT, FDO_FRST); 634 635 /* see if it can handle a command */ 636 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 637 NE7_SPEC_2(2, 0), 0)) { 638 error = ENXIO; 639 goto out; 640 } 641 642 if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) { 643 ic_type = (u_char)ic_type; 644 switch (ic_type) { 645 case 0x80: 646 device_set_desc(dev, "NEC 765 or clone"); 647 fdc->fdct = FDC_NE765; 648 break; 649 case 0x81: 650 device_set_desc(dev, "Intel 82077 or clone"); 651 fdc->fdct = FDC_I82077; 652 break; 653 case 0x90: 654 device_set_desc(dev, "NEC 72065B or clone"); 655 fdc->fdct = FDC_NE72065; 656 break; 657 default: 658 device_set_desc(dev, "generic floppy controller"); 659 fdc->fdct = FDC_UNKNOWN; 660 break; 661 } 662 } 663 664 snprintf(myname, sizeof(myname), "%s%d", device_get_name(dev), 665 device_get_unit(dev)); 666 for (i = resource_query_string(-1, "at", myname); i != -1; 667 i = resource_query_string(i, "at", myname)) 668 fdc_add_device(dev, resource_query_name(i), 669 resource_query_unit(i)); 670 #ifdef FDC_YE 671 /* 672 * don't succeed on probe; wait 673 * for PCCARD subsystem to do it 674 */ 675 if (dev->id_flags & FDC_IS_PCMCIA) 676 return(0); 677 #endif 678 return (0); 679 680 out: 681 if (fdc->fdc_intr) 682 BUS_TEARDOWN_INTR(device_get_parent(dev), dev, fdc->res_irq, 683 fdc->fdc_intr); 684 if (fdc->res_irq != 0) { 685 bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 686 fdc->res_irq); 687 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 688 fdc->res_irq); 689 } 690 if (fdc->res_ioport != 0) { 691 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 692 fdc->res_ioport); 693 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 694 fdc->res_ioport); 695 } 696 if (fdc->res_drq != 0) { 697 bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 698 fdc->res_drq); 699 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 700 fdc->res_drq); 701 } 702 return (error); 703 } 704 705 /* 706 * Aped dfr@freebsd.org's isa_add_device(). 707 */ 708 static void 709 fdc_add_device(device_t dev, const char *name, int unit) 710 { 711 int disabled, *ivar; 712 device_t child; 713 714 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT); 715 if (ivar == 0) 716 return; 717 if (resource_int_value(name, unit, "drive", ivar) != 0) 718 *ivar = 0; 719 child = device_add_child(dev, name, unit, ivar); 720 if (child == 0) 721 return; 722 if (resource_int_value(name, unit, "disabled", &disabled) == 0 723 && disabled != 0) 724 device_disable(child); 725 } 726 727 static int 728 fdc_attach(device_t dev) 729 { 730 struct fdc_data *fdc = device_get_softc(dev); 731 fdcu_t fdcu = device_get_unit(dev); 732 733 fdc->fdcu = fdcu; 734 fdc->flags |= FDC_ATTACHED; 735 736 /* Acquire the DMA channel forever, The driver will do the rest */ 737 /* XXX should integrate with rman */ 738 isa_dma_acquire(fdc->dmachan); 739 isa_dmainit(fdc->dmachan, 128 << 3 /* XXX max secsize */); 740 fdc->state = DEVIDLE; 741 742 /* reset controller, turn motor off, clear fdout mirror reg */ 743 outb(fdc->baseport + FDOUT, ((fdc->fdout = 0))); 744 bufq_init(&fdc->head); 745 746 #ifdef FIFO_BEFORE_MOTORON 747 /* Hmm, this doesn't work here - is set_motor() magic? -Peter */ 748 if (fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN 749 && enable_fifo(fdc) == 0) { 750 device_print_prettyname(dev); 751 printf("FIFO enabled, %d bytes threshold\n", fifo_threshold); 752 } 753 #endif 754 /* 755 * Probe and attach any children as were configured above. 756 */ 757 return (bus_generic_attach(dev)); 758 } 759 760 static void 761 fdc_print_child(device_t me, device_t child) 762 { 763 printf(" at %s%d drive %d", device_get_name(me), device_get_unit(me), 764 *(int *)device_get_ivars(child)); 765 } 766 767 static int 768 fd_probe(device_t dev) 769 { 770 int i; 771 u_int fdt, st0, st3; 772 struct fd_data *fd; 773 struct fdc_data *fdc; 774 fdsu_t fdsu; 775 #ifndef FIFO_BEFORE_MOTORON 776 static int fd_fifo = 0; 777 #endif 778 779 fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */ 780 fd = device_get_softc(dev); 781 fdc = device_get_softc(device_get_parent(dev)); 782 783 bzero(fd, sizeof *fd); 784 fd->dev = dev; 785 fd->fdc = fdc; 786 fd->fdsu = fdsu; 787 fd->fdu = device_get_unit(dev); 788 789 #ifdef __i386__ 790 /* look up what bios thinks we have */ 791 switch (fd->fdu) { 792 case 0: 793 if (isa_get_flags(fdc->fdc_dev) & FDC_PRETEND_D0) 794 fdt = RTCFDT_144M | RTCFDT_144M_PRETENDED; 795 else 796 fdt = (rtcin(RTC_FDISKETTE) & 0xf0); 797 break; 798 case 1: 799 fdt = ((rtcin(RTC_FDISKETTE) << 4) & 0xf0); 800 break; 801 default: 802 fdt = RTCFDT_NONE; 803 break; 804 } 805 #else 806 fdt = RTCFDT_144M; /* XXX probably */ 807 #endif 808 809 /* is there a unit? */ 810 if (fdt == RTCFDT_NONE) 811 return (ENXIO); 812 813 /* select it */ 814 set_motor(fdc, fdsu, TURNON); 815 DELAY(1000000); /* 1 sec */ 816 817 #ifndef FIFO_BEFORE_MOTORON 818 if (fd_fifo == 0 && fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN 819 && enable_fifo(fdc) == 0) { 820 device_print_prettyname(device_get_parent(dev)); 821 printf("FIFO enabled, %d bytes threshold\n", fifo_threshold); 822 } 823 fd_fifo = 1; 824 #endif 825 826 if ((fd_cmd(fdc, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) 827 && (st3 & NE7_ST3_T0)) { 828 /* if at track 0, first seek inwards */ 829 /* seek some steps: */ 830 fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0); 831 DELAY(300000); /* ...wait a moment... */ 832 fd_sense_int(fdc, 0, 0); /* make ctrlr happy */ 833 } 834 835 /* If we're at track 0 first seek inwards. */ 836 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) { 837 /* Seek some steps... */ 838 if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 839 /* ...wait a moment... */ 840 DELAY(300000); 841 /* make ctrlr happy: */ 842 fd_sense_int(fdc, 0, 0); 843 } 844 } 845 846 for (i = 0; i < 2; i++) { 847 /* 848 * we must recalibrate twice, just in case the 849 * heads have been beyond cylinder 76, since most 850 * FDCs still barf when attempting to recalibrate 851 * more than 77 steps 852 */ 853 /* go back to 0: */ 854 if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 855 /* a second being enough for full stroke seek*/ 856 DELAY(i == 0 ? 1000000 : 300000); 857 858 /* anything responding? */ 859 if (fd_sense_int(fdc, &st0, 0) == 0 && 860 (st0 & NE7_ST0_EC) == 0) 861 break; /* already probed succesfully */ 862 } 863 } 864 865 set_motor(fdc, fdsu, TURNOFF); 866 867 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */ 868 return (ENXIO); 869 870 fd->track = FD_NO_TRACK; 871 fd->fdc = fdc; 872 fd->fdsu = fdsu; 873 fd->options = 0; 874 callout_handle_init(&fd->toffhandle); 875 callout_handle_init(&fd->tohandle); 876 877 switch (fdt) { 878 case RTCFDT_12M: 879 device_set_desc(dev, "1200-KB 5.25\" drive"); 880 fd->type = FD_1200; 881 break; 882 case RTCFDT_144M | RTCFDT_144M_PRETENDED: 883 device_set_desc(dev, "config-pretended 1440-MB 3.5\" drive"); 884 fdt = RTCFDT_144M; 885 fd->type = FD_1440; 886 case RTCFDT_144M: 887 device_set_desc(dev, "1440-KB 3.5\" drive"); 888 fd->type = FD_1440; 889 break; 890 case RTCFDT_288M: 891 case RTCFDT_288M_1: 892 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 893 fd->type = FD_1440; 894 break; 895 case RTCFDT_360K: 896 device_set_desc(dev, "360-KB 5.25\" drive"); 897 fd->type = FD_360; 898 break; 899 case RTCFDT_720K: 900 printf("720-KB 3.5\" drive"); 901 fd->type = FD_720; 902 break; 903 default: 904 return (ENXIO); 905 } 906 return (0); 907 } 908 909 static int 910 fd_attach(device_t dev) 911 { 912 struct fd_data *fd; 913 #ifdef DEVFS 914 int i; 915 int mynor; 916 int typemynor; 917 int typesize; 918 #endif 919 920 fd = device_get_softc(dev); 921 922 #ifdef DEVFS /* XXX bitrot */ 923 mynor = fd->fdu << 6; 924 fd->bdevs[0] = devfs_add_devswf(&fd_cdevsw, mynor, DV_BLK, 925 UID_ROOT, GID_OPERATOR, 0640, 926 "fd%d", fd->fdu); 927 fd->cdevs[0] = devfs_add_devswf(&fd_cdevsw, mynor, DV_CHR, 928 UID_ROOT, GID_OPERATOR, 0640, 929 "rfd%d", fd->fdu); 930 for (i = 1; i < 1 + NUMDENS; i++) { 931 /* 932 * XXX this and the lookup in Fdopen() should be 933 * data driven. 934 */ 935 switch (fd->type) { 936 case FD_360: 937 if (i != FD_360) 938 continue; 939 break; 940 case FD_720: 941 if (i != FD_720 && i != FD_800 && i != FD_820) 942 continue; 943 break; 944 case FD_1200: 945 if (i != FD_360 && i != FD_720 && i != FD_800 946 && i != FD_820 && i != FD_1200 947 && i != FD_1440 && i != FD_1480) 948 continue; 949 break; 950 case FD_1440: 951 if (i != FD_720 && i != FD_800 && i != FD_820 952 && i != FD_1200 && i != FD_1440 953 && i != FD_1480 && i != FD_1720) 954 continue; 955 break; 956 } 957 typesize = fd_types[i - 1].size / 2; 958 /* 959 * XXX all these conversions give bloated code and 960 * confusing names. 961 */ 962 if (typesize == 1476) 963 typesize = 1480; 964 if (typesize == 1722) 965 typesize = 1720; 966 typemynor = mynor | i; 967 fd->bdevs[i] = 968 devfs_add_devswf(&fd_cdevsw, typemynor, DV_BLK, 969 UID_ROOT, GID_OPERATOR, 0640, 970 "fd%d.%d", fd->fdu, typesize); 971 fd->cdevs[i] = 972 devfs_add_devswf(&fd_cdevsw, typemynor, DV_CHR, 973 UID_ROOT, GID_OPERATOR, 0640, 974 "rfd%d.%d", fd->fdu, typesize); 975 } 976 977 for (i = 0; i < MAXPARTITIONS; i++) { 978 fd->bdevs[1 + NUMDENS + i] = devfs_makelink(fd->bdevs[0], 979 "fd%d%c", fd->fdu, 'a' + i); 980 fd->cdevs[1 + NUMDENS + i] = 981 devfs_makelink(fd->cdevs[0], 982 "rfd%d%c", fd->fdu, 'a' + i); 983 } 984 #endif /* DEVFS */ 985 /* 986 * Export the drive to the devstat interface. 987 */ 988 devstat_add_entry(&fd->device_stats, device_get_name(dev), 989 device_get_unit(dev), 512, DEVSTAT_NO_ORDERED_TAGS, 990 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER, 991 DEVSTAT_PRIORITY_FD); 992 return (0); 993 } 994 995 #ifdef FDC_YE 996 /* 997 * this is a subset of fdattach() optimized for the Y-E Data 998 * PCMCIA floppy drive. 999 */ 1000 static int yeattach(struct isa_device *dev) 1001 { 1002 fdcu_t fdcu = dev->id_unit; 1003 fdc_p fdc = fdc_data + fdcu; 1004 fdsu_t fdsu = 0; /* assume 1 drive per YE controller */ 1005 fdu_t fdu; 1006 fd_p fd; 1007 int st0, st3, i; 1008 #ifdef DEVFS 1009 int mynor; 1010 int typemynor; 1011 int typesize; 1012 #endif 1013 fdc->fdcu = fdcu; 1014 /* 1015 * the FDC_PCMCIA flag is used to to indicate special PIO is used 1016 * instead of DMA 1017 */ 1018 fdc->flags = FDC_ATTACHED|FDC_PCMCIA; 1019 fdc->state = DEVIDLE; 1020 /* reset controller, turn motor off, clear fdout mirror reg */ 1021 outb(fdc->baseport + FDOUT, ((fdc->fdout = 0))); 1022 bufq_init(&fdc->head); 1023 /* 1024 * assume 2 drives/ "normal" controller 1025 */ 1026 fdu = fdcu * 2; 1027 if (fdu >= NFD) { 1028 printf("fdu %d >= NFD\n",fdu); 1029 return(0); 1030 }; 1031 fd = &fd_data[fdu]; 1032 1033 set_motor(fdcu, fdsu, TURNON); 1034 DELAY(1000000); /* 1 sec */ 1035 fdc->fdct = FDC_NE765; 1036 1037 if ((fd_cmd(fdcu, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) && 1038 (st3 & NE7_ST3_T0)) { 1039 /* if at track 0, first seek inwards */ 1040 /* seek some steps: */ 1041 (void)fd_cmd(fdcu, 3, NE7CMD_SEEK, fdsu, 10, 0); 1042 DELAY(300000); /* ...wait a moment... */ 1043 (void)fd_sense_int(fdc, 0, 0); /* make ctrlr happy */ 1044 } 1045 1046 /* If we're at track 0 first seek inwards. */ 1047 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) { 1048 /* Seek some steps... */ 1049 if (fd_cmd(fdcu, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 1050 /* ...wait a moment... */ 1051 DELAY(300000); 1052 /* make ctrlr happy: */ 1053 (void)fd_sense_int(fdc, 0, 0); 1054 } 1055 } 1056 1057 for(i = 0; i < 2; i++) { 1058 /* 1059 * we must recalibrate twice, just in case the 1060 * heads have been beyond cylinder 76, since most 1061 * FDCs still barf when attempting to recalibrate 1062 * more than 77 steps 1063 */ 1064 /* go back to 0: */ 1065 if (fd_cmd(fdcu, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1066 /* a second being enough for full stroke seek*/ 1067 DELAY(i == 0? 1000000: 300000); 1068 1069 /* anything responding? */ 1070 if (fd_sense_int(fdc, &st0, 0) == 0 && 1071 (st0 & NE7_ST0_EC) == 0) 1072 break; /* already probed succesfully */ 1073 } 1074 } 1075 1076 set_motor(fdcu, fdsu, TURNOFF); 1077 1078 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */ 1079 return(0); 1080 1081 fd->track = FD_NO_TRACK; 1082 fd->fdc = fdc; 1083 fd->fdsu = fdsu; 1084 fd->options = 0; 1085 printf("fdc%d: 1.44MB 3.5in PCMCIA\n", fdcu); 1086 fd->type = FD_1440; 1087 1088 #ifdef DEVFS 1089 mynor = fdcu << 6; 1090 fd->bdevs[0] = devfs_add_devswf(&fd_cdevsw, mynor, DV_BLK, 1091 UID_ROOT, GID_OPERATOR, 0640, 1092 "fd%d", fdu); 1093 fd->cdevs[0] = devfs_add_devswf(&fd_cdevsw, mynor, DV_CHR, 1094 UID_ROOT, GID_OPERATOR, 0640, 1095 "rfd%d", fdu); 1096 /* 1097 * XXX this and the lookup in Fdopen() should be 1098 * data driven. 1099 */ 1100 typemynor = mynor | FD_1440; 1101 typesize = fd_types[FD_1440 - 1].size / 2; 1102 /* 1103 * XXX all these conversions give bloated code and 1104 * confusing names. 1105 */ 1106 if (typesize == 1476) 1107 typesize = 1480; 1108 if (typesize == 1722) 1109 typesize = 1720; 1110 fd->bdevs[FD_1440] = devfs_add_devswf(&fd_cdevsw, typemynor, 1111 DV_BLK, UID_ROOT, GID_OPERATOR, 1112 0640, "fd%d.%d", fdu, typesize); 1113 fd->cdevs[FD_1440] = devfs_add_devswf(&fd_cdevsw, typemynor, 1114 DV_CHR, UID_ROOT, GID_OPERATOR, 1115 0640,"rfd%d.%d", fdu, typesize); 1116 for (i = 0; i < MAXPARTITIONS; i++) { 1117 fd->bdevs[1 + NUMDENS + i] = devfs_makelink(fd->bdevs[0], 1118 "fd%d%c", fdu, 'a' + i); 1119 fd->cdevs[1 + NUMDENS + i] = devfs_makelink(fd->cdevs[0], 1120 "rfd%d%c", fdu, 'a' + i); 1121 } 1122 #endif /* DEVFS */ 1123 return (1); 1124 } 1125 #endif 1126 1127 /****************************************************************************/ 1128 /* motor control stuff */ 1129 /* remember to not deselect the drive we're working on */ 1130 /****************************************************************************/ 1131 static void 1132 set_motor(struct fdc_data *fdc, int fdsu, int turnon) 1133 { 1134 int fdout = fdc->fdout; 1135 int needspecify = 0; 1136 1137 if(turnon) { 1138 fdout &= ~FDO_FDSEL; 1139 fdout |= (FDO_MOEN0 << fdsu) + fdsu; 1140 } else 1141 fdout &= ~(FDO_MOEN0 << fdsu); 1142 1143 if(!turnon 1144 && (fdout & (FDO_MOEN0+FDO_MOEN1+FDO_MOEN2+FDO_MOEN3)) == 0) 1145 /* gonna turn off the last drive, put FDC to bed */ 1146 fdout &= ~ (FDO_FRST|FDO_FDMAEN); 1147 else { 1148 /* make sure controller is selected and specified */ 1149 if((fdout & (FDO_FRST|FDO_FDMAEN)) == 0) 1150 needspecify = 1; 1151 fdout |= (FDO_FRST|FDO_FDMAEN); 1152 } 1153 1154 outb(fdc->baseport+FDOUT, fdout); 1155 fdc->fdout = fdout; 1156 TRACE1("[0x%x->FDOUT]", fdout); 1157 1158 if (needspecify) { 1159 /* 1160 * XXX 1161 * special case: since we have just woken up the FDC 1162 * from its sleep, we silently assume the command will 1163 * be accepted, and do not test for a timeout 1164 */ 1165 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1166 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1167 0); 1168 if (fdc->flags & FDC_HAS_FIFO) 1169 (void) enable_fifo(fdc); 1170 } 1171 } 1172 1173 static void 1174 fd_turnoff(void *xfd) 1175 { 1176 int s; 1177 fd_p fd = xfd; 1178 1179 TRACE1("[fd%d: turnoff]", fd->fdu); 1180 1181 /* 1182 * Don't turn off the motor yet if the drive is active. 1183 * XXX shouldn't even schedule turnoff until drive is inactive 1184 * and nothing is queued on it. 1185 */ 1186 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) { 1187 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 1188 return; 1189 } 1190 1191 s = splbio(); 1192 fd->flags &= ~FD_MOTOR; 1193 set_motor(fd->fdc, fd->fdsu, TURNOFF); 1194 splx(s); 1195 } 1196 1197 static void 1198 fd_motor_on(void *xfd) 1199 { 1200 int s; 1201 fd_p fd = xfd; 1202 1203 s = splbio(); 1204 fd->flags &= ~FD_MOTOR_WAIT; 1205 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT)) 1206 { 1207 fdc_intr(fd->fdc); 1208 } 1209 splx(s); 1210 } 1211 1212 static void 1213 fd_turnon(fd_p fd) 1214 { 1215 if(!(fd->flags & FD_MOTOR)) 1216 { 1217 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT); 1218 set_motor(fd->fdc, fd->fdsu, TURNON); 1219 timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */ 1220 } 1221 } 1222 1223 static void 1224 fdc_reset(fdc_p fdc) 1225 { 1226 /* Try a reset, keep motor on */ 1227 outb(fdc->baseport + FDOUT, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1228 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1229 DELAY(100); 1230 /* enable FDC, but defer interrupts a moment */ 1231 outb(fdc->baseport + FDOUT, fdc->fdout & ~FDO_FDMAEN); 1232 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN); 1233 DELAY(100); 1234 outb(fdc->baseport + FDOUT, fdc->fdout); 1235 TRACE1("[0x%x->FDOUT]", fdc->fdout); 1236 1237 /* XXX after a reset, silently believe the FDC will accept commands */ 1238 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1239 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1240 0); 1241 if (fdc->flags & FDC_HAS_FIFO) 1242 (void) enable_fifo(fdc); 1243 } 1244 1245 /****************************************************************************/ 1246 /* fdc in/out */ 1247 /****************************************************************************/ 1248 int 1249 in_fdc(struct fdc_data *fdc) 1250 { 1251 int baseport = fdc->baseport; 1252 int i, j = 100000; 1253 while ((i = inb(baseport+FDSTS) & (NE7_DIO|NE7_RQM)) 1254 != (NE7_DIO|NE7_RQM) && j-- > 0) 1255 if (i == NE7_RQM) 1256 return fdc_err(fdc, "ready for output in input\n"); 1257 if (j <= 0) 1258 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1259 #ifdef FDC_DEBUG 1260 i = inb(baseport+FDDATA); 1261 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1262 return(i); 1263 #else /* !FDC_DEBUG */ 1264 return inb(baseport+FDDATA); 1265 #endif /* FDC_DEBUG */ 1266 } 1267 1268 /* 1269 * fd_in: Like in_fdc, but allows you to see if it worked. 1270 */ 1271 static int 1272 fd_in(struct fdc_data *fdc, int *ptr) 1273 { 1274 int baseport = fdc->baseport; 1275 int i, j = 100000; 1276 while ((i = inb(baseport+FDSTS) & (NE7_DIO|NE7_RQM)) 1277 != (NE7_DIO|NE7_RQM) && j-- > 0) 1278 if (i == NE7_RQM) 1279 return fdc_err(fdc, "ready for output in input\n"); 1280 if (j <= 0) 1281 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1282 #ifdef FDC_DEBUG 1283 i = inb(baseport+FDDATA); 1284 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1285 *ptr = i; 1286 return 0; 1287 #else /* !FDC_DEBUG */ 1288 i = inb(baseport+FDDATA); 1289 if (ptr) 1290 *ptr = i; 1291 return 0; 1292 #endif /* FDC_DEBUG */ 1293 } 1294 1295 int 1296 out_fdc(struct fdc_data *fdc, int x) 1297 { 1298 int baseport = fdc->baseport; 1299 int i; 1300 1301 /* Check that the direction bit is set */ 1302 i = 100000; 1303 while ((inb(baseport+FDSTS) & NE7_DIO) && i-- > 0); 1304 if (i <= 0) return fdc_err(fdc, "direction bit not set\n"); 1305 1306 /* Check that the floppy controller is ready for a command */ 1307 i = 100000; 1308 while ((inb(baseport+FDSTS) & NE7_RQM) == 0 && i-- > 0); 1309 if (i <= 0) 1310 return fdc_err(fdc, bootverbose? "output ready timeout\n": 0); 1311 1312 /* Send the command and return */ 1313 outb(baseport+FDDATA, x); 1314 TRACE1("[0x%x->FDDATA]", x); 1315 return (0); 1316 } 1317 1318 /****************************************************************************/ 1319 /* fdopen/fdclose */ 1320 /****************************************************************************/ 1321 int 1322 Fdopen(dev_t dev, int flags, int mode, struct proc *p) 1323 { 1324 fdu_t fdu = FDUNIT(minor(dev)); 1325 int type = FDTYPE(minor(dev)); 1326 fd_p fd; 1327 fdc_p fdc; 1328 1329 /* check bounds */ 1330 if ((fd = devclass_get_softc(fd_devclass, fdu)) == 0) 1331 return (ENXIO); 1332 fdc = fd->fdc; 1333 if ((fdc == NULL) || (fd->type == NO_TYPE)) 1334 return (ENXIO); 1335 if (type > NUMDENS) 1336 return (ENXIO); 1337 if (type == 0) 1338 type = fd->type; 1339 else { 1340 /* 1341 * For each type of basic drive, make sure we are trying 1342 * to open a type it can do, 1343 */ 1344 if (type != fd->type) { 1345 switch (fd->type) { 1346 case FD_360: 1347 return (ENXIO); 1348 case FD_720: 1349 if ( type != FD_820 1350 && type != FD_800 1351 ) 1352 return (ENXIO); 1353 break; 1354 case FD_1200: 1355 switch (type) { 1356 case FD_1480: 1357 type = FD_1480in5_25; 1358 break; 1359 case FD_1440: 1360 type = FD_1440in5_25; 1361 break; 1362 case FD_820: 1363 type = FD_820in5_25; 1364 break; 1365 case FD_800: 1366 type = FD_800in5_25; 1367 break; 1368 case FD_720: 1369 type = FD_720in5_25; 1370 break; 1371 case FD_360: 1372 type = FD_360in5_25; 1373 break; 1374 default: 1375 return(ENXIO); 1376 } 1377 break; 1378 case FD_1440: 1379 if ( type != FD_1720 1380 && type != FD_1480 1381 && type != FD_1200 1382 && type != FD_820 1383 && type != FD_800 1384 && type != FD_720 1385 ) 1386 return(ENXIO); 1387 break; 1388 } 1389 } 1390 } 1391 fd->ft = fd_types + type - 1; 1392 fd->flags |= FD_OPEN; 1393 device_busy(fd->dev); 1394 device_busy(fd->fdc->fdc_dev); 1395 return 0; 1396 } 1397 1398 int 1399 fdclose(dev_t dev, int flags, int mode, struct proc *p) 1400 { 1401 fdu_t fdu = FDUNIT(minor(dev)); 1402 struct fd_data *fd; 1403 1404 fd = devclass_get_softc(fd_devclass, fdu); 1405 fd->flags &= ~FD_OPEN; 1406 fd->options &= ~FDOPT_NORETRY; 1407 1408 return (0); 1409 } 1410 1411 /****************************************************************************/ 1412 /* fdstrategy */ 1413 /****************************************************************************/ 1414 void 1415 fdstrategy(struct buf *bp) 1416 { 1417 unsigned nblocks, blknum, cando; 1418 int s; 1419 fdu_t fdu; 1420 fdc_p fdc; 1421 fd_p fd; 1422 size_t fdblk; 1423 1424 fdu = FDUNIT(minor(bp->b_dev)); 1425 fd = devclass_get_softc(fd_devclass, fdu); 1426 if (fd == 0) 1427 panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)", 1428 (u_long)major(bp->b_dev), (u_long)minor(bp->b_dev)); 1429 fdc = fd->fdc; 1430 #ifdef FDC_YE 1431 if (fd->type == NO_TYPE) { 1432 bp->b_error = ENXIO; 1433 bp->b_flags |= B_ERROR; 1434 /* 1435 * I _refuse_ to use a goto 1436 */ 1437 biodone(bp); 1438 return; 1439 }; 1440 #endif 1441 1442 fdblk = 128 << (fd->ft->secsize); 1443 if (!(bp->b_flags & B_FORMAT)) { 1444 if (bp->b_blkno < 0) { 1445 printf( 1446 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n", 1447 fdu, (u_long)bp->b_blkno, bp->b_bcount); 1448 bp->b_error = EINVAL; 1449 bp->b_flags |= B_ERROR; 1450 goto bad; 1451 } 1452 if ((bp->b_bcount % fdblk) != 0) { 1453 bp->b_error = EINVAL; 1454 bp->b_flags |= B_ERROR; 1455 goto bad; 1456 } 1457 } 1458 1459 /* 1460 * Set up block calculations. 1461 */ 1462 if (bp->b_blkno > 20000000) { 1463 /* 1464 * Reject unreasonably high block number, prevent the 1465 * multiplication below from overflowing. 1466 */ 1467 bp->b_error = EINVAL; 1468 bp->b_flags |= B_ERROR; 1469 goto bad; 1470 } 1471 blknum = (unsigned) bp->b_blkno * DEV_BSIZE/fdblk; 1472 nblocks = fd->ft->size; 1473 bp->b_resid = 0; 1474 if (blknum + (bp->b_bcount / fdblk) > nblocks) { 1475 if (blknum <= nblocks) { 1476 cando = (nblocks - blknum) * fdblk; 1477 bp->b_resid = bp->b_bcount - cando; 1478 if (cando == 0) 1479 goto bad; /* not actually bad but EOF */ 1480 } else { 1481 bp->b_error = EINVAL; 1482 bp->b_flags |= B_ERROR; 1483 goto bad; 1484 } 1485 } 1486 bp->b_pblkno = bp->b_blkno; 1487 s = splbio(); 1488 bufqdisksort(&fdc->head, bp); 1489 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */ 1490 1491 /* Tell devstat we are starting on the transaction */ 1492 devstat_start_transaction(&fd->device_stats); 1493 1494 fdstart(fdc); 1495 splx(s); 1496 return; 1497 1498 bad: 1499 biodone(bp); 1500 } 1501 1502 /***************************************************************\ 1503 * fdstart * 1504 * We have just queued something.. if the controller is not busy * 1505 * then simulate the case where it has just finished a command * 1506 * So that it (the interrupt routine) looks on the queue for more* 1507 * work to do and picks up what we just added. * 1508 * If the controller is already busy, we need do nothing, as it * 1509 * will pick up our work when the present work completes * 1510 \***************************************************************/ 1511 static void 1512 fdstart(struct fdc_data *fdc) 1513 { 1514 int s; 1515 1516 s = splbio(); 1517 if(fdc->state == DEVIDLE) 1518 { 1519 fdc_intr(fdc); 1520 } 1521 splx(s); 1522 } 1523 1524 static void 1525 fd_iotimeout(void *xfdc) 1526 { 1527 fdc_p fdc; 1528 int s; 1529 1530 fdc = xfdc; 1531 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); 1532 1533 /* 1534 * Due to IBM's brain-dead design, the FDC has a faked ready 1535 * signal, hardwired to ready == true. Thus, any command 1536 * issued if there's no diskette in the drive will _never_ 1537 * complete, and must be aborted by resetting the FDC. 1538 * Many thanks, Big Blue! 1539 * The FDC must not be reset directly, since that would 1540 * interfere with the state machine. Instead, pretend that 1541 * the command completed but was invalid. The state machine 1542 * will reset the FDC and retry once. 1543 */ 1544 s = splbio(); 1545 fdc->status[0] = NE7_ST0_IC_IV; 1546 fdc->flags &= ~FDC_STAT_VALID; 1547 fdc->state = IOTIMEDOUT; 1548 fdc_intr(fdc); 1549 splx(s); 1550 } 1551 1552 /* just ensure it has the right spl */ 1553 static void 1554 fd_pseudointr(void *xfdc) 1555 { 1556 int s; 1557 1558 s = splbio(); 1559 fdc_intr(xfdc); 1560 splx(s); 1561 } 1562 1563 /***********************************************************************\ 1564 * fdintr * 1565 * keep calling the state machine until it returns a 0 * 1566 * ALWAYS called at SPLBIO * 1567 \***********************************************************************/ 1568 static void 1569 fdc_intr(void *xfdc) 1570 { 1571 fdc_p fdc = xfdc; 1572 while(fdstate(fdc)) 1573 ; 1574 } 1575 1576 #ifdef FDC_YE 1577 /* 1578 * magic pseudo-DMA initialization for YE FDC. Sets count and 1579 * direction 1580 */ 1581 #define SET_BCDR(wr,cnt,port) outb(port,(((cnt)-1) & 0xff)); \ 1582 outb(port+1,((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))) 1583 1584 /* 1585 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy 1586 */ 1587 static int fdcpio(fdcu_t fdcu, long flags, caddr_t addr, u_int count) 1588 { 1589 u_char *cptr = (u_char *)addr; 1590 fdc_p fdc = &fdc_data[fdcu]; 1591 int io = fdc->baseport; 1592 1593 if (flags & B_READ) { 1594 if (fdc->state != PIOREAD) { 1595 fdc->state = PIOREAD; 1596 return(0); 1597 }; 1598 SET_BCDR(0,count,io); 1599 insb(io+FDC_YE_DATAPORT,cptr,count); 1600 } else { 1601 outsb(io+FDC_YE_DATAPORT,cptr,count); 1602 SET_BCDR(0,count,io); 1603 }; 1604 return(1); 1605 } 1606 #endif /* FDC_YE */ 1607 1608 /***********************************************************************\ 1609 * The controller state machine. * 1610 * if it returns a non zero value, it should be called again immediatly * 1611 \***********************************************************************/ 1612 static int 1613 fdstate(fdc_p fdc) 1614 { 1615 int read, format, head, i, sec = 0, sectrac, st0, cyl, st3; 1616 unsigned blknum = 0, b_cylinder = 0; 1617 fdu_t fdu = fdc->fdu; 1618 fd_p fd; 1619 register struct buf *bp; 1620 struct fd_formb *finfo = NULL; 1621 size_t fdblk; 1622 1623 bp = fdc->bp; 1624 if (bp == NULL) { 1625 bp = bufq_first(&fdc->head); 1626 if (bp != NULL) { 1627 bufq_remove(&fdc->head, bp); 1628 fdc->bp = bp; 1629 } 1630 } 1631 if (bp == NULL) { 1632 /***********************************************\ 1633 * nothing left for this controller to do * 1634 * Force into the IDLE state, * 1635 \***********************************************/ 1636 fdc->state = DEVIDLE; 1637 if (fdc->fd) { 1638 device_print_prettyname(fdc->fdc_dev); 1639 printf("unexpected valid fd pointer\n"); 1640 fdc->fd = (fd_p) 0; 1641 fdc->fdu = -1; 1642 } 1643 TRACE1("[fdc%d IDLE]", fdc->fdcu); 1644 return (0); 1645 } 1646 fdu = FDUNIT(minor(bp->b_dev)); 1647 fd = devclass_get_softc(fd_devclass, fdu); 1648 fdblk = 128 << fd->ft->secsize; 1649 if (fdc->fd && (fd != fdc->fd)) { 1650 device_print_prettyname(fd->dev); 1651 printf("confused fd pointers\n"); 1652 } 1653 read = bp->b_flags & B_READ; 1654 format = bp->b_flags & B_FORMAT; 1655 if (format) { 1656 finfo = (struct fd_formb *)bp->b_data; 1657 fd->skip = (char *)&(finfo->fd_formb_cylno(0)) 1658 - (char *)finfo; 1659 } 1660 if (fdc->state == DOSEEK || fdc->state == SEEKCOMPLETE) { 1661 blknum = (unsigned) bp->b_pblkno * DEV_BSIZE/fdblk + 1662 fd->skip/fdblk; 1663 b_cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 1664 } 1665 TRACE1("fd%d", fdu); 1666 TRACE1("[%s]", fdstates[fdc->state]); 1667 TRACE1("(0x%x)", fd->flags); 1668 untimeout(fd_turnoff, fd, fd->toffhandle); 1669 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 1670 switch (fdc->state) 1671 { 1672 case DEVIDLE: 1673 case FINDWORK: /* we have found new work */ 1674 fdc->retry = 0; 1675 fd->skip = 0; 1676 fdc->fd = fd; 1677 fdc->fdu = fdu; 1678 outb(fdc->baseport+FDCTL, fd->ft->trans); 1679 TRACE1("[0x%x->FDCTL]", fd->ft->trans); 1680 /*******************************************************\ 1681 * If the next drive has a motor startup pending, then * 1682 * it will start up in its own good time * 1683 \*******************************************************/ 1684 if(fd->flags & FD_MOTOR_WAIT) { 1685 fdc->state = MOTORWAIT; 1686 return (0); /* come back later */ 1687 } 1688 /*******************************************************\ 1689 * Maybe if it's not starting, it SHOULD be starting * 1690 \*******************************************************/ 1691 if (!(fd->flags & FD_MOTOR)) 1692 { 1693 fdc->state = MOTORWAIT; 1694 fd_turnon(fd); 1695 return (0); 1696 } 1697 else /* at least make sure we are selected */ 1698 { 1699 set_motor(fdc, fd->fdsu, TURNON); 1700 } 1701 if (fdc->flags & FDC_NEEDS_RESET) { 1702 fdc->state = RESETCTLR; 1703 fdc->flags &= ~FDC_NEEDS_RESET; 1704 } else 1705 fdc->state = DOSEEK; 1706 break; 1707 case DOSEEK: 1708 if (b_cylinder == (unsigned)fd->track) 1709 { 1710 fdc->state = SEEKCOMPLETE; 1711 break; 1712 } 1713 if (fd_cmd(fdc, 3, NE7CMD_SEEK, 1714 fd->fdsu, b_cylinder * fd->ft->steptrac, 1715 0)) 1716 { 1717 /* 1718 * seek command not accepted, looks like 1719 * the FDC went off to the Saints... 1720 */ 1721 fdc->retry = 6; /* try a reset */ 1722 return(retrier(fdc)); 1723 } 1724 fd->track = FD_NO_TRACK; 1725 fdc->state = SEEKWAIT; 1726 return(0); /* will return later */ 1727 case SEEKWAIT: 1728 /* allow heads to settle */ 1729 timeout(fd_pseudointr, fdc, hz / 16); 1730 fdc->state = SEEKCOMPLETE; 1731 return(0); /* will return later */ 1732 case SEEKCOMPLETE : /* SEEK DONE, START DMA */ 1733 /* Make sure seek really happened*/ 1734 if(fd->track == FD_NO_TRACK) { 1735 int descyl = b_cylinder * fd->ft->steptrac; 1736 do { 1737 /* 1738 * This might be a "ready changed" interrupt, 1739 * which cannot really happen since the 1740 * RDY pin is hardwired to + 5 volts. This 1741 * generally indicates a "bouncing" intr 1742 * line, so do one of the following: 1743 * 1744 * When running on an enhanced FDC that is 1745 * known to not go stuck after responding 1746 * with INVALID, fetch all interrupt states 1747 * until seeing either an INVALID or a 1748 * real interrupt condition. 1749 * 1750 * When running on a dumb old NE765, give 1751 * up immediately. The controller will 1752 * provide up to four dummy RC interrupt 1753 * conditions right after reset (for the 1754 * corresponding four drives), so this is 1755 * our only chance to get notice that it 1756 * was not the FDC that caused the interrupt. 1757 */ 1758 if (fd_sense_int(fdc, &st0, &cyl) 1759 == FD_NOT_VALID) 1760 return 0; 1761 if(fdc->fdct == FDC_NE765 1762 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 1763 return 0; /* hope for a real intr */ 1764 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 1765 1766 if (0 == descyl) { 1767 int failed = 0; 1768 /* 1769 * seek to cyl 0 requested; make sure we are 1770 * really there 1771 */ 1772 if (fd_sense_drive_status(fdc, &st3)) 1773 failed = 1; 1774 if ((st3 & NE7_ST3_T0) == 0) { 1775 printf( 1776 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", 1777 fdu, st3, NE7_ST3BITS); 1778 failed = 1; 1779 } 1780 1781 if (failed) { 1782 if(fdc->retry < 3) 1783 fdc->retry = 3; 1784 return (retrier(fdc)); 1785 } 1786 } 1787 1788 if (cyl != descyl) { 1789 printf( 1790 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", 1791 fdu, descyl, cyl, st0); 1792 if (fdc->retry < 3) 1793 fdc->retry = 3; 1794 return (retrier(fdc)); 1795 } 1796 } 1797 1798 fd->track = b_cylinder; 1799 #ifdef FDC_YE 1800 if (!(fdc->flags & FDC_PCMCIA)) 1801 #endif 1802 isa_dmastart(bp->b_flags, bp->b_data+fd->skip, 1803 format ? bp->b_bcount : fdblk, fdc->dmachan); 1804 sectrac = fd->ft->sectrac; 1805 sec = blknum % (sectrac * fd->ft->heads); 1806 head = sec / sectrac; 1807 sec = sec % sectrac + 1; 1808 fd->hddrv = ((head&1)<<2)+fdu; 1809 1810 if(format || !read) 1811 { 1812 /* make sure the drive is writable */ 1813 if(fd_sense_drive_status(fdc, &st3) != 0) 1814 { 1815 /* stuck controller? */ 1816 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1817 format ? bp->b_bcount : fdblk, 1818 fdc->dmachan); 1819 fdc->retry = 6; /* reset the beast */ 1820 return (retrier(fdc)); 1821 } 1822 if(st3 & NE7_ST3_WP) 1823 { 1824 /* 1825 * XXX YES! this is ugly. 1826 * in order to force the current operation 1827 * to fail, we will have to fake an FDC 1828 * error - all error handling is done 1829 * by the retrier() 1830 */ 1831 fdc->status[0] = NE7_ST0_IC_AT; 1832 fdc->status[1] = NE7_ST1_NW; 1833 fdc->status[2] = 0; 1834 fdc->status[3] = fd->track; 1835 fdc->status[4] = head; 1836 fdc->status[5] = sec; 1837 fdc->retry = 8; /* break out immediately */ 1838 fdc->state = IOTIMEDOUT; /* not really... */ 1839 return (1); 1840 } 1841 } 1842 1843 if (format) { 1844 #ifdef FDC_YE 1845 if (fdc->flags & FDC_PCMCIA) 1846 (void)fdcpio(fdcu,bp->b_flags, 1847 bp->b_data+fd->skip, 1848 bp->b_bcount); 1849 #endif 1850 /* formatting */ 1851 if(fd_cmd(fdc, 6, NE7CMD_FORMAT, head << 2 | fdu, 1852 finfo->fd_formb_secshift, 1853 finfo->fd_formb_nsecs, 1854 finfo->fd_formb_gaplen, 1855 finfo->fd_formb_fillbyte, 0)) { 1856 /* controller fell over */ 1857 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1858 format ? bp->b_bcount : fdblk, 1859 fdc->dmachan); 1860 fdc->retry = 6; 1861 return (retrier(fdc)); 1862 } 1863 } else { 1864 #ifdef FDC_YE 1865 if (fdc->flags & FDC_PCMCIA) { 1866 /* 1867 * this seems to be necessary even when 1868 * reading data 1869 */ 1870 SET_BCDR(1,fdblk,fdc->baseport); 1871 1872 /* 1873 * perform the write pseudo-DMA before 1874 * the WRITE command is sent 1875 */ 1876 if (!read) 1877 (void)fdcpio(fdcu,bp->b_flags, 1878 bp->b_data+fd->skip, 1879 fdblk); 1880 } 1881 #endif 1882 if (fd_cmd(fdc, 9, 1883 (read ? NE7CMD_READ : NE7CMD_WRITE), 1884 head << 2 | fdu, /* head & unit */ 1885 fd->track, /* track */ 1886 head, 1887 sec, /* sector + 1 */ 1888 fd->ft->secsize, /* sector size */ 1889 sectrac, /* sectors/track */ 1890 fd->ft->gap, /* gap size */ 1891 fd->ft->datalen, /* data length */ 1892 0)) { 1893 /* the beast is sleeping again */ 1894 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1895 format ? bp->b_bcount : fdblk, 1896 fdc->dmachan); 1897 fdc->retry = 6; 1898 return (retrier(fdc)); 1899 } 1900 } 1901 #ifdef FDC_YE 1902 if (fdc->flags & FDC_PCMCIA) 1903 /* 1904 * if this is a read, then simply await interrupt 1905 * before performing PIO 1906 */ 1907 if (read && !fdcpio(fdcu,bp->b_flags, 1908 bp->b_data+fd->skip,fdblk)) { 1909 fd->tohandle = timeout(fd_iotimeout, 1910 (caddr_t)fdcu, hz); 1911 return(0); /* will return later */ 1912 }; 1913 1914 /* 1915 * write (or format) operation will fall through and 1916 * await completion interrupt 1917 */ 1918 #endif 1919 fdc->state = IOCOMPLETE; 1920 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 1921 return (0); /* will return later */ 1922 #ifdef FDC_YE 1923 case PIOREAD: 1924 /* 1925 * actually perform the PIO read. The IOCOMPLETE case 1926 * removes the timeout for us. 1927 */ 1928 (void)fdcpio(fdcu,bp->b_flags,bp->b_data+fd->skip,fdblk); 1929 fdc->state = IOCOMPLETE; 1930 /* FALLTHROUGH */ 1931 #endif 1932 case IOCOMPLETE: /* IO DONE, post-analyze */ 1933 untimeout(fd_iotimeout, fdc, fd->tohandle); 1934 1935 if (fd_read_status(fdc, fd->fdsu)) { 1936 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1937 format ? bp->b_bcount : fdblk, 1938 fdc->dmachan); 1939 if (fdc->retry < 6) 1940 fdc->retry = 6; /* force a reset */ 1941 return (retrier(fdc)); 1942 } 1943 1944 fdc->state = IOTIMEDOUT; 1945 1946 /* FALLTHROUGH */ 1947 1948 case IOTIMEDOUT: 1949 #ifdef FDC_YE 1950 if (!(fdc->flags & FDC_PCMCIA)) 1951 #endif 1952 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1953 format ? bp->b_bcount : fdblk, fdc->dmachan); 1954 if (fdc->status[0] & NE7_ST0_IC) { 1955 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 1956 && fdc->status[1] & NE7_ST1_OR) { 1957 /* 1958 * DMA overrun. Someone hogged the bus 1959 * and didn't release it in time for the 1960 * next FDC transfer. 1961 * Just restart it, don't increment retry 1962 * count. (vak) 1963 */ 1964 fdc->state = SEEKCOMPLETE; 1965 return (1); 1966 } 1967 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV 1968 && fdc->retry < 6) 1969 fdc->retry = 6; /* force a reset */ 1970 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 1971 && fdc->status[2] & NE7_ST2_WC 1972 && fdc->retry < 3) 1973 fdc->retry = 3; /* force recalibrate */ 1974 return (retrier(fdc)); 1975 } 1976 /* All OK */ 1977 fd->skip += fdblk; 1978 if (!format && fd->skip < bp->b_bcount - bp->b_resid) { 1979 /* set up next transfer */ 1980 fdc->state = DOSEEK; 1981 } else { 1982 /* ALL DONE */ 1983 fd->skip = 0; 1984 fdc->bp = NULL; 1985 /* Tell devstat we have finished with the transaction */ 1986 devstat_end_transaction(&fd->device_stats, 1987 bp->b_bcount - bp->b_resid, 1988 DEVSTAT_TAG_NONE, 1989 (bp->b_flags & B_READ) ? 1990 DEVSTAT_READ : DEVSTAT_WRITE); 1991 biodone(bp); 1992 fdc->fd = (fd_p) 0; 1993 fdc->fdu = -1; 1994 fdc->state = FINDWORK; 1995 } 1996 return (1); 1997 case RESETCTLR: 1998 fdc_reset(fdc); 1999 fdc->retry++; 2000 fdc->state = RESETCOMPLETE; 2001 return (0); 2002 case RESETCOMPLETE: 2003 /* 2004 * Discard all the results from the reset so that they 2005 * can't cause an unexpected interrupt later. 2006 */ 2007 for (i = 0; i < 4; i++) 2008 (void)fd_sense_int(fdc, &st0, &cyl); 2009 fdc->state = STARTRECAL; 2010 /* Fall through. */ 2011 case STARTRECAL: 2012 if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) { 2013 /* arrgl */ 2014 fdc->retry = 6; 2015 return (retrier(fdc)); 2016 } 2017 fdc->state = RECALWAIT; 2018 return (0); /* will return later */ 2019 case RECALWAIT: 2020 /* allow heads to settle */ 2021 timeout(fd_pseudointr, fdc, hz / 8); 2022 fdc->state = RECALCOMPLETE; 2023 return (0); /* will return later */ 2024 case RECALCOMPLETE: 2025 do { 2026 /* 2027 * See SEEKCOMPLETE for a comment on this: 2028 */ 2029 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 2030 return 0; 2031 if(fdc->fdct == FDC_NE765 2032 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 2033 return 0; /* hope for a real intr */ 2034 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 2035 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0) 2036 { 2037 if(fdc->retry > 3) 2038 /* 2039 * a recalibrate from beyond cylinder 77 2040 * will "fail" due to the FDC limitations; 2041 * since people used to complain much about 2042 * the failure message, try not logging 2043 * this one if it seems to be the first 2044 * time in a line 2045 */ 2046 printf("fd%d: recal failed ST0 %b cyl %d\n", 2047 fdu, st0, NE7_ST0BITS, cyl); 2048 if(fdc->retry < 3) fdc->retry = 3; 2049 return (retrier(fdc)); 2050 } 2051 fd->track = 0; 2052 /* Seek (probably) necessary */ 2053 fdc->state = DOSEEK; 2054 return (1); /* will return immediatly */ 2055 case MOTORWAIT: 2056 if(fd->flags & FD_MOTOR_WAIT) 2057 { 2058 return (0); /* time's not up yet */ 2059 } 2060 if (fdc->flags & FDC_NEEDS_RESET) { 2061 fdc->state = RESETCTLR; 2062 fdc->flags &= ~FDC_NEEDS_RESET; 2063 } else { 2064 /* 2065 * If all motors were off, then the controller was 2066 * reset, so it has lost track of the current 2067 * cylinder. Recalibrate to handle this case. 2068 * But first, discard the results of the reset. 2069 */ 2070 fdc->state = RESETCOMPLETE; 2071 } 2072 return (1); /* will return immediatly */ 2073 default: 2074 device_print_prettyname(fdc->fdc_dev); 2075 printf("unexpected FD int->"); 2076 if (fd_read_status(fdc, fd->fdsu) == 0) 2077 printf("FDC status :%x %x %x %x %x %x %x ", 2078 fdc->status[0], 2079 fdc->status[1], 2080 fdc->status[2], 2081 fdc->status[3], 2082 fdc->status[4], 2083 fdc->status[5], 2084 fdc->status[6] ); 2085 else 2086 printf("No status available "); 2087 if (fd_sense_int(fdc, &st0, &cyl) != 0) 2088 { 2089 printf("[controller is dead now]\n"); 2090 return (0); 2091 } 2092 printf("ST0 = %x, PCN = %x\n", st0, cyl); 2093 return (0); 2094 } 2095 /*XXX confusing: some branches return immediately, others end up here*/ 2096 return (1); /* Come back immediatly to new state */ 2097 } 2098 2099 static int 2100 retrier(struct fdc_data *fdc) 2101 { 2102 register struct buf *bp; 2103 struct fd_data *fd; 2104 int fdu; 2105 2106 bp = fdc->bp; 2107 2108 /* XXX shouldn't this be cached somewhere? */ 2109 fdu = FDUNIT(minor(bp->b_dev)); 2110 fd = devclass_get_softc(fd_devclass, fdu); 2111 if (fd->options & FDOPT_NORETRY) 2112 goto fail; 2113 2114 switch (fdc->retry) { 2115 case 0: case 1: case 2: 2116 fdc->state = SEEKCOMPLETE; 2117 break; 2118 case 3: case 4: case 5: 2119 fdc->state = STARTRECAL; 2120 break; 2121 case 6: 2122 fdc->state = RESETCTLR; 2123 break; 2124 case 7: 2125 break; 2126 default: 2127 fail: 2128 { 2129 dev_t sav_b_dev = bp->b_dev; 2130 2131 if (fdc->fd == 0) 2132 goto bogus; 2133 /* Trick diskerr */ 2134 bp->b_dev = makedev(major(bp->b_dev), 2135 (FDUNIT(minor(bp->b_dev))<<3)|RAW_PART); 2136 diskerr(bp, "fd", "hard error", LOG_PRINTF, 2137 fdc->fd->skip / DEV_BSIZE, 2138 (struct disklabel *)NULL); 2139 bp->b_dev = sav_b_dev; 2140 if (fdc->flags & FDC_STAT_VALID) 2141 { 2142 printf( 2143 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n", 2144 fdc->status[0], NE7_ST0BITS, 2145 fdc->status[1], NE7_ST1BITS, 2146 fdc->status[2], NE7_ST2BITS, 2147 fdc->status[3], fdc->status[4], 2148 fdc->status[5]); 2149 } 2150 else 2151 printf(" (No status)\n"); 2152 } 2153 bp->b_flags |= B_ERROR; 2154 bp->b_error = EIO; 2155 bp->b_resid += bp->b_bcount - fdc->fd->skip; 2156 fdc->bp = NULL; 2157 2158 /* Tell devstat we have finished with the transaction */ 2159 devstat_end_transaction(&fdc->fd->device_stats, 2160 bp->b_bcount - bp->b_resid, 2161 DEVSTAT_TAG_NONE, 2162 (bp->b_flags & B_READ) ? DEVSTAT_READ : 2163 DEVSTAT_WRITE); 2164 fdc->fd->skip = 0; 2165 biodone(bp); 2166 bogus: 2167 fdc->state = FINDWORK; 2168 fdc->flags |= FDC_NEEDS_RESET; 2169 fdc->fd = (fd_p) 0; 2170 fdc->fdu = -1; 2171 return (1); 2172 } 2173 fdc->retry++; 2174 return (1); 2175 } 2176 2177 static int 2178 fdformat(dev, finfo, p) 2179 dev_t dev; 2180 struct fd_formb *finfo; 2181 struct proc *p; 2182 { 2183 fdu_t fdu; 2184 fd_p fd; 2185 2186 struct buf *bp; 2187 int rv = 0, s; 2188 size_t fdblk; 2189 2190 fdu = FDUNIT(minor(dev)); 2191 fd = devclass_get_softc(fd_devclass, fdu); 2192 fdblk = 128 << fd->ft->secsize; 2193 2194 /* set up a buffer header for fdstrategy() */ 2195 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2196 if(bp == 0) 2197 return ENOBUFS; 2198 /* 2199 * keep the process from being swapped 2200 */ 2201 PHOLD(p); 2202 bzero((void *)bp, sizeof(struct buf)); 2203 BUF_LOCKINIT(bp); 2204 BUF_LOCK(bp, LK_EXCLUSIVE); 2205 bp->b_flags = B_PHYS | B_FORMAT; 2206 2207 /* 2208 * calculate a fake blkno, so fdstrategy() would initiate a 2209 * seek to the requested cylinder 2210 */ 2211 bp->b_blkno = (finfo->cyl * (fd->ft->sectrac * fd->ft->heads) 2212 + finfo->head * fd->ft->sectrac) * fdblk / DEV_BSIZE; 2213 2214 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2215 bp->b_data = (caddr_t)finfo; 2216 2217 /* now do the format */ 2218 bp->b_dev = dev; 2219 fdstrategy(bp); 2220 2221 /* ...and wait for it to complete */ 2222 s = splbio(); 2223 while(!(bp->b_flags & B_DONE)) { 2224 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2225 if (rv == EWOULDBLOCK) 2226 break; 2227 } 2228 splx(s); 2229 2230 if (rv == EWOULDBLOCK) { 2231 /* timed out */ 2232 rv = EIO; 2233 biodone(bp); 2234 } 2235 if (bp->b_flags & B_ERROR) 2236 rv = bp->b_error; 2237 /* 2238 * allow the process to be swapped 2239 */ 2240 PRELE(p); 2241 BUF_UNLOCK(bp); 2242 BUF_LOCKFREE(bp); 2243 free(bp, M_TEMP); 2244 return rv; 2245 } 2246 2247 /* 2248 * TODO: don't allocate buffer on stack. 2249 */ 2250 2251 static int 2252 fdioctl(dev, cmd, addr, flag, p) 2253 dev_t dev; 2254 u_long cmd; 2255 caddr_t addr; 2256 int flag; 2257 struct proc *p; 2258 { 2259 fdu_t fdu = FDUNIT(minor(dev)); 2260 fd_p fd = devclass_get_softc(fd_devclass, fdu); 2261 size_t fdblk; 2262 2263 struct fd_type *fdt; 2264 struct disklabel *dl; 2265 char buffer[DEV_BSIZE]; 2266 int error = 0; 2267 2268 fdblk = 128 << fd->ft->secsize; 2269 2270 switch (cmd) { 2271 case DIOCGDINFO: 2272 bzero(buffer, sizeof (buffer)); 2273 dl = (struct disklabel *)buffer; 2274 dl->d_secsize = fdblk; 2275 fdt = fd->ft; 2276 dl->d_secpercyl = fdt->size / fdt->tracks; 2277 dl->d_type = DTYPE_FLOPPY; 2278 2279 if (readdisklabel(dkmodpart(dev, RAW_PART), fdstrategy, dl) 2280 == NULL) 2281 error = 0; 2282 else 2283 error = EINVAL; 2284 2285 *(struct disklabel *)addr = *dl; 2286 break; 2287 2288 case DIOCSDINFO: 2289 if ((flag & FWRITE) == 0) 2290 error = EBADF; 2291 break; 2292 2293 case DIOCWLABEL: 2294 if ((flag & FWRITE) == 0) 2295 error = EBADF; 2296 break; 2297 2298 case DIOCWDINFO: 2299 if ((flag & FWRITE) == 0) { 2300 error = EBADF; 2301 break; 2302 } 2303 2304 dl = (struct disklabel *)addr; 2305 2306 if ((error = setdisklabel((struct disklabel *)buffer, dl, 2307 (u_long)0)) != 0) 2308 break; 2309 2310 error = writedisklabel(dev, fdstrategy, 2311 (struct disklabel *)buffer); 2312 break; 2313 case FD_FORM: 2314 if ((flag & FWRITE) == 0) 2315 error = EBADF; /* must be opened for writing */ 2316 else if (((struct fd_formb *)addr)->format_version != 2317 FD_FORMAT_VERSION) 2318 error = EINVAL; /* wrong version of formatting prog */ 2319 else 2320 error = fdformat(dev, (struct fd_formb *)addr, p); 2321 break; 2322 2323 case FD_GTYPE: /* get drive type */ 2324 *(struct fd_type *)addr = *fd->ft; 2325 break; 2326 2327 case FD_STYPE: /* set drive type */ 2328 /* this is considered harmful; only allow for superuser */ 2329 if (suser(p) != 0) 2330 return EPERM; 2331 *fd->ft = *(struct fd_type *)addr; 2332 break; 2333 2334 case FD_GOPTS: /* get drive options */ 2335 *(int *)addr = fd->options; 2336 break; 2337 2338 case FD_SOPTS: /* set drive options */ 2339 fd->options = *(int *)addr; 2340 break; 2341 2342 default: 2343 error = ENOTTY; 2344 break; 2345 } 2346 return (error); 2347 } 2348 2349 static device_method_t fdc_methods[] = { 2350 /* Device interface */ 2351 DEVMETHOD(device_probe, fdc_probe), 2352 DEVMETHOD(device_attach, fdc_attach), 2353 DEVMETHOD(device_detach, bus_generic_detach), 2354 DEVMETHOD(device_shutdown, bus_generic_shutdown), 2355 DEVMETHOD(device_suspend, bus_generic_suspend), 2356 DEVMETHOD(device_resume, bus_generic_resume), 2357 2358 /* Bus interface */ 2359 DEVMETHOD(bus_print_child, fdc_print_child), 2360 /* Our children never use any other bus interface methods. */ 2361 2362 { 0, 0 } 2363 }; 2364 2365 static driver_t fdc_driver = { 2366 "fdc", 2367 fdc_methods, 2368 sizeof(struct fdc_data) 2369 }; 2370 2371 DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0); 2372 2373 static device_method_t fd_methods[] = { 2374 /* Device interface */ 2375 DEVMETHOD(device_probe, fd_probe), 2376 DEVMETHOD(device_attach, fd_attach), 2377 DEVMETHOD(device_detach, bus_generic_detach), 2378 DEVMETHOD(device_shutdown, bus_generic_shutdown), 2379 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 2380 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 2381 2382 { 0, 0 } 2383 }; 2384 2385 static driver_t fd_driver = { 2386 "fd", 2387 fd_methods, 2388 sizeof(struct fd_data) 2389 }; 2390 2391 DEV_DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, fd_cdevsw, 0, 0); 2392 2393 #endif /* NFDC > 0 */ 2394 2395 /* 2396 * Hello emacs, these are the 2397 * Local Variables: 2398 * c-indent-level: 8 2399 * c-continued-statement-offset: 8 2400 * c-continued-brace-offset: 0 2401 * c-brace-offset: -8 2402 * c-brace-imaginary-offset: 0 2403 * c-argdecl-indent: 8 2404 * c-label-offset: -8 2405 * c++-hanging-braces: 1 2406 * c++-access-specifier-offset: -8 2407 * c++-empty-arglist-indent: 8 2408 * c++-friend-offset: 0 2409 * End: 2410 */ 2411