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