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 (device_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 /* check bounds */ 1283 if ((fd = devclass_get_softc(fd_devclass, fdu)) == 0) 1284 return (ENXIO); 1285 fdc = fd->fdc; 1286 if ((fdc == NULL) || (fd->type == NO_TYPE)) 1287 return (ENXIO); 1288 if (type > NUMDENS) 1289 return (ENXIO); 1290 if (type == 0) 1291 type = fd->type; 1292 else { 1293 /* 1294 * For each type of basic drive, make sure we are trying 1295 * to open a type it can do, 1296 */ 1297 if (type != fd->type) { 1298 switch (fd->type) { 1299 case FD_360: 1300 return (ENXIO); 1301 case FD_720: 1302 if ( type != FD_820 1303 && type != FD_800 1304 ) 1305 return (ENXIO); 1306 break; 1307 case FD_1200: 1308 switch (type) { 1309 case FD_1480: 1310 type = FD_1480in5_25; 1311 break; 1312 case FD_1440: 1313 type = FD_1440in5_25; 1314 break; 1315 case FD_820: 1316 type = FD_820in5_25; 1317 break; 1318 case FD_800: 1319 type = FD_800in5_25; 1320 break; 1321 case FD_720: 1322 type = FD_720in5_25; 1323 break; 1324 case FD_360: 1325 type = FD_360in5_25; 1326 break; 1327 default: 1328 return(ENXIO); 1329 } 1330 break; 1331 case FD_1440: 1332 if ( type != FD_1720 1333 && type != FD_1480 1334 && type != FD_1200 1335 && type != FD_820 1336 && type != FD_800 1337 && type != FD_720 1338 ) 1339 return(ENXIO); 1340 break; 1341 } 1342 } 1343 } 1344 fd->ft = fd_types + type - 1; 1345 fd->flags |= FD_OPEN; 1346 device_busy(fd->dev); 1347 device_busy(fd->fdc->fdc_dev); 1348 return 0; 1349 } 1350 1351 int 1352 fdclose(dev_t dev, int flags, int mode, struct proc *p) 1353 { 1354 fdu_t fdu = FDUNIT(minor(dev)); 1355 struct fd_data *fd; 1356 1357 fd = devclass_get_softc(fd_devclass, fdu); 1358 fd->flags &= ~FD_OPEN; 1359 fd->options &= ~FDOPT_NORETRY; 1360 1361 return (0); 1362 } 1363 1364 /****************************************************************************/ 1365 /* fdstrategy */ 1366 /****************************************************************************/ 1367 void 1368 fdstrategy(struct buf *bp) 1369 { 1370 unsigned nblocks, blknum, cando; 1371 int s; 1372 fdu_t fdu; 1373 fdc_p fdc; 1374 fd_p fd; 1375 size_t fdblk; 1376 1377 fdu = FDUNIT(minor(bp->b_dev)); 1378 fd = devclass_get_softc(fd_devclass, fdu); 1379 if (fd == 0) 1380 panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)", 1381 (u_long)major(bp->b_dev), (u_long)minor(bp->b_dev)); 1382 fdc = fd->fdc; 1383 #ifdef FDC_YE 1384 if (fd->type == NO_TYPE) { 1385 bp->b_error = ENXIO; 1386 bp->b_flags |= B_ERROR; 1387 /* 1388 * I _refuse_ to use a goto 1389 */ 1390 biodone(bp); 1391 return; 1392 }; 1393 #endif 1394 1395 fdblk = 128 << (fd->ft->secsize); 1396 if (!(bp->b_flags & B_FORMAT)) { 1397 if (bp->b_blkno < 0) { 1398 printf( 1399 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n", 1400 fdu, (u_long)bp->b_blkno, bp->b_bcount); 1401 bp->b_error = EINVAL; 1402 bp->b_flags |= B_ERROR; 1403 goto bad; 1404 } 1405 if ((bp->b_bcount % fdblk) != 0) { 1406 bp->b_error = EINVAL; 1407 bp->b_flags |= B_ERROR; 1408 goto bad; 1409 } 1410 } 1411 1412 /* 1413 * Set up block calculations. 1414 */ 1415 if (bp->b_blkno > 20000000) { 1416 /* 1417 * Reject unreasonably high block number, prevent the 1418 * multiplication below from overflowing. 1419 */ 1420 bp->b_error = EINVAL; 1421 bp->b_flags |= B_ERROR; 1422 goto bad; 1423 } 1424 blknum = (unsigned) bp->b_blkno * DEV_BSIZE/fdblk; 1425 nblocks = fd->ft->size; 1426 bp->b_resid = 0; 1427 if (blknum + (bp->b_bcount / fdblk) > nblocks) { 1428 if (blknum <= nblocks) { 1429 cando = (nblocks - blknum) * fdblk; 1430 bp->b_resid = bp->b_bcount - cando; 1431 if (cando == 0) 1432 goto bad; /* not actually bad but EOF */ 1433 } else { 1434 bp->b_error = EINVAL; 1435 bp->b_flags |= B_ERROR; 1436 goto bad; 1437 } 1438 } 1439 bp->b_pblkno = bp->b_blkno; 1440 s = splbio(); 1441 bufqdisksort(&fdc->head, bp); 1442 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */ 1443 1444 /* Tell devstat we are starting on the transaction */ 1445 devstat_start_transaction(&fd->device_stats); 1446 1447 fdstart(fdc); 1448 splx(s); 1449 return; 1450 1451 bad: 1452 biodone(bp); 1453 } 1454 1455 /***************************************************************\ 1456 * fdstart * 1457 * We have just queued something.. if the controller is not busy * 1458 * then simulate the case where it has just finished a command * 1459 * So that it (the interrupt routine) looks on the queue for more* 1460 * work to do and picks up what we just added. * 1461 * If the controller is already busy, we need do nothing, as it * 1462 * will pick up our work when the present work completes * 1463 \***************************************************************/ 1464 static void 1465 fdstart(struct fdc_data *fdc) 1466 { 1467 int s; 1468 1469 s = splbio(); 1470 if(fdc->state == DEVIDLE) 1471 { 1472 fdc_intr(fdc); 1473 } 1474 splx(s); 1475 } 1476 1477 static void 1478 fd_iotimeout(void *xfdc) 1479 { 1480 fdc_p fdc; 1481 int s; 1482 1483 fdc = xfdc; 1484 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); 1485 1486 /* 1487 * Due to IBM's brain-dead design, the FDC has a faked ready 1488 * signal, hardwired to ready == true. Thus, any command 1489 * issued if there's no diskette in the drive will _never_ 1490 * complete, and must be aborted by resetting the FDC. 1491 * Many thanks, Big Blue! 1492 * The FDC must not be reset directly, since that would 1493 * interfere with the state machine. Instead, pretend that 1494 * the command completed but was invalid. The state machine 1495 * will reset the FDC and retry once. 1496 */ 1497 s = splbio(); 1498 fdc->status[0] = NE7_ST0_IC_IV; 1499 fdc->flags &= ~FDC_STAT_VALID; 1500 fdc->state = IOTIMEDOUT; 1501 fdc_intr(fdc); 1502 splx(s); 1503 } 1504 1505 /* just ensure it has the right spl */ 1506 static void 1507 fd_pseudointr(void *xfdc) 1508 { 1509 int s; 1510 1511 s = splbio(); 1512 fdc_intr(xfdc); 1513 splx(s); 1514 } 1515 1516 /***********************************************************************\ 1517 * fdintr * 1518 * keep calling the state machine until it returns a 0 * 1519 * ALWAYS called at SPLBIO * 1520 \***********************************************************************/ 1521 static void 1522 fdc_intr(void *xfdc) 1523 { 1524 fdc_p fdc = xfdc; 1525 while(fdstate(fdc)) 1526 ; 1527 } 1528 1529 #ifdef FDC_YE 1530 /* 1531 * magic pseudo-DMA initialization for YE FDC. Sets count and 1532 * direction 1533 */ 1534 #define SET_BCDR(wr,cnt,port) outb(port,(((cnt)-1) & 0xff)); \ 1535 outb(port+1,((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))) 1536 1537 /* 1538 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy 1539 */ 1540 static int fdcpio(fdcu_t fdcu, long flags, caddr_t addr, u_int count) 1541 { 1542 u_char *cptr = (u_char *)addr; 1543 fdc_p fdc = &fdc_data[fdcu]; 1544 int io = fdc->baseport; 1545 1546 if (flags & B_READ) { 1547 if (fdc->state != PIOREAD) { 1548 fdc->state = PIOREAD; 1549 return(0); 1550 }; 1551 SET_BCDR(0,count,io); 1552 insb(io+FDC_YE_DATAPORT,cptr,count); 1553 } else { 1554 outsb(io+FDC_YE_DATAPORT,cptr,count); 1555 SET_BCDR(0,count,io); 1556 }; 1557 return(1); 1558 } 1559 #endif /* FDC_YE */ 1560 1561 /***********************************************************************\ 1562 * The controller state machine. * 1563 * if it returns a non zero value, it should be called again immediatly * 1564 \***********************************************************************/ 1565 static int 1566 fdstate(fdc_p fdc) 1567 { 1568 int read, format, head, i, sec = 0, sectrac, st0, cyl, st3; 1569 unsigned blknum = 0, b_cylinder = 0; 1570 fdu_t fdu = fdc->fdu; 1571 fd_p fd; 1572 register struct buf *bp; 1573 struct fd_formb *finfo = NULL; 1574 size_t fdblk; 1575 1576 bp = fdc->bp; 1577 if (bp == NULL) { 1578 bp = bufq_first(&fdc->head); 1579 if (bp != NULL) { 1580 bufq_remove(&fdc->head, bp); 1581 fdc->bp = bp; 1582 } 1583 } 1584 if (bp == NULL) { 1585 /***********************************************\ 1586 * nothing left for this controller to do * 1587 * Force into the IDLE state, * 1588 \***********************************************/ 1589 fdc->state = DEVIDLE; 1590 if (fdc->fd) { 1591 device_print_prettyname(fdc->fdc_dev); 1592 printf("unexpected valid fd pointer\n"); 1593 fdc->fd = (fd_p) 0; 1594 fdc->fdu = -1; 1595 } 1596 TRACE1("[fdc%d IDLE]", fdc->fdcu); 1597 return (0); 1598 } 1599 fdu = FDUNIT(minor(bp->b_dev)); 1600 fd = devclass_get_softc(fd_devclass, fdu); 1601 fdblk = 128 << fd->ft->secsize; 1602 if (fdc->fd && (fd != fdc->fd)) { 1603 device_print_prettyname(fd->dev); 1604 printf("confused fd pointers\n"); 1605 } 1606 read = bp->b_flags & B_READ; 1607 format = bp->b_flags & B_FORMAT; 1608 if (format) { 1609 finfo = (struct fd_formb *)bp->b_data; 1610 fd->skip = (char *)&(finfo->fd_formb_cylno(0)) 1611 - (char *)finfo; 1612 } 1613 if (fdc->state == DOSEEK || fdc->state == SEEKCOMPLETE) { 1614 blknum = (unsigned) bp->b_pblkno * DEV_BSIZE/fdblk + 1615 fd->skip/fdblk; 1616 b_cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 1617 } 1618 TRACE1("fd%d", fdu); 1619 TRACE1("[%s]", fdstates[fdc->state]); 1620 TRACE1("(0x%x)", fd->flags); 1621 untimeout(fd_turnoff, fd, fd->toffhandle); 1622 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 1623 switch (fdc->state) 1624 { 1625 case DEVIDLE: 1626 case FINDWORK: /* we have found new work */ 1627 fdc->retry = 0; 1628 fd->skip = 0; 1629 fdc->fd = fd; 1630 fdc->fdu = fdu; 1631 outb(fdc->baseport+FDCTL, fd->ft->trans); 1632 TRACE1("[0x%x->FDCTL]", fd->ft->trans); 1633 /*******************************************************\ 1634 * If the next drive has a motor startup pending, then * 1635 * it will start up in its own good time * 1636 \*******************************************************/ 1637 if(fd->flags & FD_MOTOR_WAIT) { 1638 fdc->state = MOTORWAIT; 1639 return (0); /* come back later */ 1640 } 1641 /*******************************************************\ 1642 * Maybe if it's not starting, it SHOULD be starting * 1643 \*******************************************************/ 1644 if (!(fd->flags & FD_MOTOR)) 1645 { 1646 fdc->state = MOTORWAIT; 1647 fd_turnon(fd); 1648 return (0); 1649 } 1650 else /* at least make sure we are selected */ 1651 { 1652 set_motor(fdc, fd->fdsu, TURNON); 1653 } 1654 if (fdc->flags & FDC_NEEDS_RESET) { 1655 fdc->state = RESETCTLR; 1656 fdc->flags &= ~FDC_NEEDS_RESET; 1657 } else 1658 fdc->state = DOSEEK; 1659 break; 1660 case DOSEEK: 1661 if (b_cylinder == (unsigned)fd->track) 1662 { 1663 fdc->state = SEEKCOMPLETE; 1664 break; 1665 } 1666 if (fd_cmd(fdc, 3, NE7CMD_SEEK, 1667 fd->fdsu, b_cylinder * fd->ft->steptrac, 1668 0)) 1669 { 1670 /* 1671 * seek command not accepted, looks like 1672 * the FDC went off to the Saints... 1673 */ 1674 fdc->retry = 6; /* try a reset */ 1675 return(retrier(fdc)); 1676 } 1677 fd->track = FD_NO_TRACK; 1678 fdc->state = SEEKWAIT; 1679 return(0); /* will return later */ 1680 case SEEKWAIT: 1681 /* allow heads to settle */ 1682 timeout(fd_pseudointr, fdc, hz / 16); 1683 fdc->state = SEEKCOMPLETE; 1684 return(0); /* will return later */ 1685 case SEEKCOMPLETE : /* SEEK DONE, START DMA */ 1686 /* Make sure seek really happened*/ 1687 if(fd->track == FD_NO_TRACK) { 1688 int descyl = b_cylinder * fd->ft->steptrac; 1689 do { 1690 /* 1691 * This might be a "ready changed" interrupt, 1692 * which cannot really happen since the 1693 * RDY pin is hardwired to + 5 volts. This 1694 * generally indicates a "bouncing" intr 1695 * line, so do one of the following: 1696 * 1697 * When running on an enhanced FDC that is 1698 * known to not go stuck after responding 1699 * with INVALID, fetch all interrupt states 1700 * until seeing either an INVALID or a 1701 * real interrupt condition. 1702 * 1703 * When running on a dumb old NE765, give 1704 * up immediately. The controller will 1705 * provide up to four dummy RC interrupt 1706 * conditions right after reset (for the 1707 * corresponding four drives), so this is 1708 * our only chance to get notice that it 1709 * was not the FDC that caused the interrupt. 1710 */ 1711 if (fd_sense_int(fdc, &st0, &cyl) 1712 == FD_NOT_VALID) 1713 return 0; 1714 if(fdc->fdct == FDC_NE765 1715 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 1716 return 0; /* hope for a real intr */ 1717 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 1718 1719 if (0 == descyl) { 1720 int failed = 0; 1721 /* 1722 * seek to cyl 0 requested; make sure we are 1723 * really there 1724 */ 1725 if (fd_sense_drive_status(fdc, &st3)) 1726 failed = 1; 1727 if ((st3 & NE7_ST3_T0) == 0) { 1728 printf( 1729 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", 1730 fdu, st3, NE7_ST3BITS); 1731 failed = 1; 1732 } 1733 1734 if (failed) { 1735 if(fdc->retry < 3) 1736 fdc->retry = 3; 1737 return (retrier(fdc)); 1738 } 1739 } 1740 1741 if (cyl != descyl) { 1742 printf( 1743 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", 1744 fdu, descyl, cyl, st0); 1745 if (fdc->retry < 3) 1746 fdc->retry = 3; 1747 return (retrier(fdc)); 1748 } 1749 } 1750 1751 fd->track = b_cylinder; 1752 #ifdef FDC_YE 1753 if (!(fdc->flags & FDC_PCMCIA)) 1754 #endif 1755 isa_dmastart(bp->b_flags, bp->b_data+fd->skip, 1756 format ? bp->b_bcount : fdblk, fdc->dmachan); 1757 sectrac = fd->ft->sectrac; 1758 sec = blknum % (sectrac * fd->ft->heads); 1759 head = sec / sectrac; 1760 sec = sec % sectrac + 1; 1761 fd->hddrv = ((head&1)<<2)+fdu; 1762 1763 if(format || !read) 1764 { 1765 /* make sure the drive is writable */ 1766 if(fd_sense_drive_status(fdc, &st3) != 0) 1767 { 1768 /* stuck controller? */ 1769 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1770 format ? bp->b_bcount : fdblk, 1771 fdc->dmachan); 1772 fdc->retry = 6; /* reset the beast */ 1773 return (retrier(fdc)); 1774 } 1775 if(st3 & NE7_ST3_WP) 1776 { 1777 /* 1778 * XXX YES! this is ugly. 1779 * in order to force the current operation 1780 * to fail, we will have to fake an FDC 1781 * error - all error handling is done 1782 * by the retrier() 1783 */ 1784 fdc->status[0] = NE7_ST0_IC_AT; 1785 fdc->status[1] = NE7_ST1_NW; 1786 fdc->status[2] = 0; 1787 fdc->status[3] = fd->track; 1788 fdc->status[4] = head; 1789 fdc->status[5] = sec; 1790 fdc->retry = 8; /* break out immediately */ 1791 fdc->state = IOTIMEDOUT; /* not really... */ 1792 return (1); 1793 } 1794 } 1795 1796 if (format) { 1797 #ifdef FDC_YE 1798 if (fdc->flags & FDC_PCMCIA) 1799 (void)fdcpio(fdcu,bp->b_flags, 1800 bp->b_data+fd->skip, 1801 bp->b_bcount); 1802 #endif 1803 /* formatting */ 1804 if(fd_cmd(fdc, 6, NE7CMD_FORMAT, head << 2 | fdu, 1805 finfo->fd_formb_secshift, 1806 finfo->fd_formb_nsecs, 1807 finfo->fd_formb_gaplen, 1808 finfo->fd_formb_fillbyte, 0)) { 1809 /* controller fell over */ 1810 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1811 format ? bp->b_bcount : fdblk, 1812 fdc->dmachan); 1813 fdc->retry = 6; 1814 return (retrier(fdc)); 1815 } 1816 } else { 1817 #ifdef FDC_YE 1818 if (fdc->flags & FDC_PCMCIA) { 1819 /* 1820 * this seems to be necessary even when 1821 * reading data 1822 */ 1823 SET_BCDR(1,fdblk,fdc->baseport); 1824 1825 /* 1826 * perform the write pseudo-DMA before 1827 * the WRITE command is sent 1828 */ 1829 if (!read) 1830 (void)fdcpio(fdcu,bp->b_flags, 1831 bp->b_data+fd->skip, 1832 fdblk); 1833 } 1834 #endif 1835 if (fd_cmd(fdc, 9, 1836 (read ? NE7CMD_READ : NE7CMD_WRITE), 1837 head << 2 | fdu, /* head & unit */ 1838 fd->track, /* track */ 1839 head, 1840 sec, /* sector + 1 */ 1841 fd->ft->secsize, /* sector size */ 1842 sectrac, /* sectors/track */ 1843 fd->ft->gap, /* gap size */ 1844 fd->ft->datalen, /* data length */ 1845 0)) { 1846 /* the beast is sleeping again */ 1847 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1848 format ? bp->b_bcount : fdblk, 1849 fdc->dmachan); 1850 fdc->retry = 6; 1851 return (retrier(fdc)); 1852 } 1853 } 1854 #ifdef FDC_YE 1855 if (fdc->flags & FDC_PCMCIA) 1856 /* 1857 * if this is a read, then simply await interrupt 1858 * before performing PIO 1859 */ 1860 if (read && !fdcpio(fdcu,bp->b_flags, 1861 bp->b_data+fd->skip,fdblk)) { 1862 fd->tohandle = timeout(fd_iotimeout, 1863 (caddr_t)fdcu, hz); 1864 return(0); /* will return later */ 1865 }; 1866 1867 /* 1868 * write (or format) operation will fall through and 1869 * await completion interrupt 1870 */ 1871 #endif 1872 fdc->state = IOCOMPLETE; 1873 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 1874 return (0); /* will return later */ 1875 #ifdef FDC_YE 1876 case PIOREAD: 1877 /* 1878 * actually perform the PIO read. The IOCOMPLETE case 1879 * removes the timeout for us. 1880 */ 1881 (void)fdcpio(fdcu,bp->b_flags,bp->b_data+fd->skip,fdblk); 1882 fdc->state = IOCOMPLETE; 1883 /* FALLTHROUGH */ 1884 #endif 1885 case IOCOMPLETE: /* IO DONE, post-analyze */ 1886 untimeout(fd_iotimeout, fdc, fd->tohandle); 1887 1888 if (fd_read_status(fdc, fd->fdsu)) { 1889 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1890 format ? bp->b_bcount : fdblk, 1891 fdc->dmachan); 1892 if (fdc->retry < 6) 1893 fdc->retry = 6; /* force a reset */ 1894 return (retrier(fdc)); 1895 } 1896 1897 fdc->state = IOTIMEDOUT; 1898 1899 /* FALLTHROUGH */ 1900 1901 case IOTIMEDOUT: 1902 #ifdef FDC_YE 1903 if (!(fdc->flags & FDC_PCMCIA)) 1904 #endif 1905 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1906 format ? bp->b_bcount : fdblk, fdc->dmachan); 1907 if (fdc->status[0] & NE7_ST0_IC) { 1908 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 1909 && fdc->status[1] & NE7_ST1_OR) { 1910 /* 1911 * DMA overrun. Someone hogged the bus 1912 * and didn't release it in time for the 1913 * next FDC transfer. 1914 * Just restart it, don't increment retry 1915 * count. (vak) 1916 */ 1917 fdc->state = SEEKCOMPLETE; 1918 return (1); 1919 } 1920 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV 1921 && fdc->retry < 6) 1922 fdc->retry = 6; /* force a reset */ 1923 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 1924 && fdc->status[2] & NE7_ST2_WC 1925 && fdc->retry < 3) 1926 fdc->retry = 3; /* force recalibrate */ 1927 return (retrier(fdc)); 1928 } 1929 /* All OK */ 1930 fd->skip += fdblk; 1931 if (!format && fd->skip < bp->b_bcount - bp->b_resid) { 1932 /* set up next transfer */ 1933 fdc->state = DOSEEK; 1934 } else { 1935 /* ALL DONE */ 1936 fd->skip = 0; 1937 fdc->bp = NULL; 1938 /* Tell devstat we have finished with the transaction */ 1939 devstat_end_transaction(&fd->device_stats, 1940 bp->b_bcount - bp->b_resid, 1941 DEVSTAT_TAG_NONE, 1942 (bp->b_flags & B_READ) ? 1943 DEVSTAT_READ : DEVSTAT_WRITE); 1944 biodone(bp); 1945 fdc->fd = (fd_p) 0; 1946 fdc->fdu = -1; 1947 fdc->state = FINDWORK; 1948 } 1949 return (1); 1950 case RESETCTLR: 1951 fdc_reset(fdc); 1952 fdc->retry++; 1953 fdc->state = RESETCOMPLETE; 1954 return (0); 1955 case RESETCOMPLETE: 1956 /* 1957 * Discard all the results from the reset so that they 1958 * can't cause an unexpected interrupt later. 1959 */ 1960 for (i = 0; i < 4; i++) 1961 (void)fd_sense_int(fdc, &st0, &cyl); 1962 fdc->state = STARTRECAL; 1963 /* Fall through. */ 1964 case STARTRECAL: 1965 if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) { 1966 /* arrgl */ 1967 fdc->retry = 6; 1968 return (retrier(fdc)); 1969 } 1970 fdc->state = RECALWAIT; 1971 return (0); /* will return later */ 1972 case RECALWAIT: 1973 /* allow heads to settle */ 1974 timeout(fd_pseudointr, fdc, hz / 8); 1975 fdc->state = RECALCOMPLETE; 1976 return (0); /* will return later */ 1977 case RECALCOMPLETE: 1978 do { 1979 /* 1980 * See SEEKCOMPLETE for a comment on this: 1981 */ 1982 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 1983 return 0; 1984 if(fdc->fdct == FDC_NE765 1985 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 1986 return 0; /* hope for a real intr */ 1987 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 1988 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0) 1989 { 1990 if(fdc->retry > 3) 1991 /* 1992 * a recalibrate from beyond cylinder 77 1993 * will "fail" due to the FDC limitations; 1994 * since people used to complain much about 1995 * the failure message, try not logging 1996 * this one if it seems to be the first 1997 * time in a line 1998 */ 1999 printf("fd%d: recal failed ST0 %b cyl %d\n", 2000 fdu, st0, NE7_ST0BITS, cyl); 2001 if(fdc->retry < 3) fdc->retry = 3; 2002 return (retrier(fdc)); 2003 } 2004 fd->track = 0; 2005 /* Seek (probably) necessary */ 2006 fdc->state = DOSEEK; 2007 return (1); /* will return immediatly */ 2008 case MOTORWAIT: 2009 if(fd->flags & FD_MOTOR_WAIT) 2010 { 2011 return (0); /* time's not up yet */ 2012 } 2013 if (fdc->flags & FDC_NEEDS_RESET) { 2014 fdc->state = RESETCTLR; 2015 fdc->flags &= ~FDC_NEEDS_RESET; 2016 } else { 2017 /* 2018 * If all motors were off, then the controller was 2019 * reset, so it has lost track of the current 2020 * cylinder. Recalibrate to handle this case. 2021 * But first, discard the results of the reset. 2022 */ 2023 fdc->state = RESETCOMPLETE; 2024 } 2025 return (1); /* will return immediatly */ 2026 default: 2027 device_print_prettyname(fdc->fdc_dev); 2028 printf("unexpected FD int->"); 2029 if (fd_read_status(fdc, fd->fdsu) == 0) 2030 printf("FDC status :%x %x %x %x %x %x %x ", 2031 fdc->status[0], 2032 fdc->status[1], 2033 fdc->status[2], 2034 fdc->status[3], 2035 fdc->status[4], 2036 fdc->status[5], 2037 fdc->status[6] ); 2038 else 2039 printf("No status available "); 2040 if (fd_sense_int(fdc, &st0, &cyl) != 0) 2041 { 2042 printf("[controller is dead now]\n"); 2043 return (0); 2044 } 2045 printf("ST0 = %x, PCN = %x\n", st0, cyl); 2046 return (0); 2047 } 2048 /*XXX confusing: some branches return immediately, others end up here*/ 2049 return (1); /* Come back immediatly to new state */ 2050 } 2051 2052 static int 2053 retrier(struct fdc_data *fdc) 2054 { 2055 register struct buf *bp; 2056 struct fd_data *fd; 2057 int fdu; 2058 2059 bp = fdc->bp; 2060 2061 /* XXX shouldn't this be cached somewhere? */ 2062 fdu = FDUNIT(minor(bp->b_dev)); 2063 fd = devclass_get_softc(fd_devclass, fdu); 2064 if (fd->options & FDOPT_NORETRY) 2065 goto fail; 2066 2067 switch (fdc->retry) { 2068 case 0: case 1: case 2: 2069 fdc->state = SEEKCOMPLETE; 2070 break; 2071 case 3: case 4: case 5: 2072 fdc->state = STARTRECAL; 2073 break; 2074 case 6: 2075 fdc->state = RESETCTLR; 2076 break; 2077 case 7: 2078 break; 2079 default: 2080 fail: 2081 { 2082 dev_t sav_b_dev = bp->b_dev; 2083 /* Trick diskerr */ 2084 bp->b_dev = makedev(major(bp->b_dev), 2085 (FDUNIT(minor(bp->b_dev))<<3)|RAW_PART); 2086 diskerr(bp, "hard error", LOG_PRINTF, 2087 fdc->fd->skip / DEV_BSIZE, 2088 (struct disklabel *)NULL); 2089 bp->b_dev = sav_b_dev; 2090 if (fdc->flags & FDC_STAT_VALID) 2091 { 2092 printf( 2093 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n", 2094 fdc->status[0], NE7_ST0BITS, 2095 fdc->status[1], NE7_ST1BITS, 2096 fdc->status[2], NE7_ST2BITS, 2097 fdc->status[3], fdc->status[4], 2098 fdc->status[5]); 2099 } 2100 else 2101 printf(" (No status)\n"); 2102 } 2103 bp->b_flags |= B_ERROR; 2104 bp->b_error = EIO; 2105 bp->b_resid += bp->b_bcount - fdc->fd->skip; 2106 fdc->bp = NULL; 2107 2108 /* Tell devstat we have finished with the transaction */ 2109 devstat_end_transaction(&fdc->fd->device_stats, 2110 bp->b_bcount - bp->b_resid, 2111 DEVSTAT_TAG_NONE, 2112 (bp->b_flags & B_READ) ? DEVSTAT_READ : 2113 DEVSTAT_WRITE); 2114 fdc->fd->skip = 0; 2115 biodone(bp); 2116 fdc->state = FINDWORK; 2117 fdc->flags |= FDC_NEEDS_RESET; 2118 fdc->fd = (fd_p) 0; 2119 fdc->fdu = -1; 2120 return (1); 2121 } 2122 fdc->retry++; 2123 return (1); 2124 } 2125 2126 static int 2127 fdformat(dev, finfo, p) 2128 dev_t dev; 2129 struct fd_formb *finfo; 2130 struct proc *p; 2131 { 2132 fdu_t fdu; 2133 fd_p fd; 2134 2135 struct buf *bp; 2136 int rv = 0, s; 2137 size_t fdblk; 2138 2139 fdu = FDUNIT(minor(dev)); 2140 fd = devclass_get_softc(fd_devclass, fdu); 2141 fdblk = 128 << fd->ft->secsize; 2142 2143 /* set up a buffer header for fdstrategy() */ 2144 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2145 if(bp == 0) 2146 return ENOBUFS; 2147 /* 2148 * keep the process from being swapped 2149 */ 2150 PHOLD(p); 2151 bzero((void *)bp, sizeof(struct buf)); 2152 BUF_LOCKINIT(bp); 2153 BUF_LOCK(bp, LK_EXCLUSIVE); 2154 bp->b_flags = B_PHYS | B_FORMAT; 2155 2156 /* 2157 * calculate a fake blkno, so fdstrategy() would initiate a 2158 * seek to the requested cylinder 2159 */ 2160 bp->b_blkno = (finfo->cyl * (fd->ft->sectrac * fd->ft->heads) 2161 + finfo->head * fd->ft->sectrac) * fdblk / DEV_BSIZE; 2162 2163 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2164 bp->b_data = (caddr_t)finfo; 2165 2166 /* now do the format */ 2167 bp->b_dev = dev; 2168 BUF_STRATEGY(bp, 0); 2169 2170 /* ...and wait for it to complete */ 2171 s = splbio(); 2172 while(!(bp->b_flags & B_DONE)) { 2173 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2174 if (rv == EWOULDBLOCK) 2175 break; 2176 } 2177 splx(s); 2178 2179 if (rv == EWOULDBLOCK) { 2180 /* timed out */ 2181 rv = EIO; 2182 biodone(bp); 2183 } 2184 if (bp->b_flags & B_ERROR) 2185 rv = bp->b_error; 2186 /* 2187 * allow the process to be swapped 2188 */ 2189 PRELE(p); 2190 BUF_UNLOCK(bp); 2191 BUF_LOCKFREE(bp); 2192 free(bp, M_TEMP); 2193 return rv; 2194 } 2195 2196 /* 2197 * TODO: don't allocate buffer on stack. 2198 */ 2199 2200 static int 2201 fdioctl(dev, cmd, addr, flag, p) 2202 dev_t dev; 2203 u_long cmd; 2204 caddr_t addr; 2205 int flag; 2206 struct proc *p; 2207 { 2208 fdu_t fdu = FDUNIT(minor(dev)); 2209 fd_p fd = devclass_get_softc(fd_devclass, fdu); 2210 size_t fdblk; 2211 2212 struct fd_type *fdt; 2213 struct disklabel *dl; 2214 char buffer[DEV_BSIZE]; 2215 int error = 0; 2216 2217 fdblk = 128 << fd->ft->secsize; 2218 2219 switch (cmd) { 2220 case DIOCGDINFO: 2221 bzero(buffer, sizeof (buffer)); 2222 dl = (struct disklabel *)buffer; 2223 dl->d_secsize = fdblk; 2224 fdt = fd->ft; 2225 dl->d_secpercyl = fdt->size / fdt->tracks; 2226 dl->d_type = DTYPE_FLOPPY; 2227 2228 if (readdisklabel(dkmodpart(dev, RAW_PART), dl) 2229 == NULL) 2230 error = 0; 2231 else 2232 error = EINVAL; 2233 2234 *(struct disklabel *)addr = *dl; 2235 break; 2236 2237 case DIOCSDINFO: 2238 if ((flag & FWRITE) == 0) 2239 error = EBADF; 2240 break; 2241 2242 case DIOCWLABEL: 2243 if ((flag & FWRITE) == 0) 2244 error = EBADF; 2245 break; 2246 2247 case DIOCWDINFO: 2248 if ((flag & FWRITE) == 0) { 2249 error = EBADF; 2250 break; 2251 } 2252 2253 dl = (struct disklabel *)addr; 2254 2255 if ((error = setdisklabel((struct disklabel *)buffer, dl, 2256 (u_long)0)) != 0) 2257 break; 2258 2259 error = writedisklabel(dev, (struct disklabel *)buffer); 2260 break; 2261 case FD_FORM: 2262 if ((flag & FWRITE) == 0) 2263 error = EBADF; /* must be opened for writing */ 2264 else if (((struct fd_formb *)addr)->format_version != 2265 FD_FORMAT_VERSION) 2266 error = EINVAL; /* wrong version of formatting prog */ 2267 else 2268 error = fdformat(dev, (struct fd_formb *)addr, p); 2269 break; 2270 2271 case FD_GTYPE: /* get drive type */ 2272 *(struct fd_type *)addr = *fd->ft; 2273 break; 2274 2275 case FD_STYPE: /* set drive type */ 2276 /* this is considered harmful; only allow for superuser */ 2277 if (suser(p) != 0) 2278 return EPERM; 2279 *fd->ft = *(struct fd_type *)addr; 2280 break; 2281 2282 case FD_GOPTS: /* get drive options */ 2283 *(int *)addr = fd->options; 2284 break; 2285 2286 case FD_SOPTS: /* set drive options */ 2287 fd->options = *(int *)addr; 2288 break; 2289 2290 default: 2291 error = ENOTTY; 2292 break; 2293 } 2294 return (error); 2295 } 2296 2297 #endif /* NFDC > 0 */ 2298 2299 /* 2300 * Hello emacs, these are the 2301 * Local Variables: 2302 * c-indent-level: 8 2303 * c-continued-statement-offset: 8 2304 * c-continued-brace-offset: 0 2305 * c-brace-offset: -8 2306 * c-brace-imaginary-offset: 0 2307 * c-argdecl-indent: 8 2308 * c-label-offset: -8 2309 * c++-hanging-braces: 1 2310 * c++-access-specifier-offset: -8 2311 * c++-empty-arglist-indent: 8 2312 * c++-friend-offset: 0 2313 * End: 2314 */ 2315