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 static int 572 fdc_probe(device_t dev) 573 { 574 int error, i, ic_type; 575 struct fdc_data *fdc; 576 char myname[8]; /* better be long enough */ 577 578 /* No pnp support */ 579 if (isa_get_vendorid(dev)) 580 return (ENXIO); 581 582 fdc = device_get_softc(dev); 583 bzero(fdc, sizeof *fdc); 584 fdc->fdc_dev = dev; 585 fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0; 586 fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0; 587 588 fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT, 589 &fdc->rid_ioport, 0ul, ~0ul, 590 IO_FDCSIZE, RF_ACTIVE); 591 if (fdc->res_ioport == 0) { 592 device_print_prettyname(dev); 593 printf("cannot reserve I/O port range\n"); 594 error = ENXIO; 595 goto out; 596 } 597 fdc->baseport = fdc->res_ioport->r_start; 598 599 fdc->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ, 600 &fdc->rid_irq, 0ul, ~0ul, 1, 601 RF_ACTIVE); 602 if (fdc->res_irq == 0) { 603 device_print_prettyname(dev); 604 printf("cannot reserve interrupt line\n"); 605 error = ENXIO; 606 goto out; 607 } 608 fdc->res_drq = bus_alloc_resource(dev, SYS_RES_DRQ, 609 &fdc->rid_drq, 0ul, ~0ul, 1, 610 RF_ACTIVE); 611 if (fdc->res_drq == 0) { 612 device_print_prettyname(dev); 613 printf("cannot reserve DMA request line\n"); 614 error = ENXIO; 615 goto out; 616 } 617 fdc->dmachan = fdc->res_drq->r_start; 618 error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq, 619 INTR_TYPE_BIO, fdc_intr, fdc, &fdc->fdc_intr); 620 621 /* First - lets reset the floppy controller */ 622 outb(fdc->baseport + FDOUT, 0); 623 DELAY(100); 624 outb(fdc->baseport + FDOUT, FDO_FRST); 625 626 /* see if it can handle a command */ 627 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 628 NE7_SPEC_2(2, 0), 0)) { 629 error = ENXIO; 630 goto out; 631 } 632 633 if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) { 634 ic_type = (u_char)ic_type; 635 switch (ic_type) { 636 case 0x80: 637 device_set_desc(dev, "NEC 765 or clone"); 638 fdc->fdct = FDC_NE765; 639 break; 640 case 0x81: 641 device_set_desc(dev, "Intel 82077 or clone"); 642 fdc->fdct = FDC_I82077; 643 break; 644 case 0x90: 645 device_set_desc(dev, "NEC 72065B or clone"); 646 fdc->fdct = FDC_NE72065; 647 break; 648 default: 649 device_set_desc(dev, "generic floppy controller"); 650 fdc->fdct = FDC_UNKNOWN; 651 break; 652 } 653 } 654 655 snprintf(myname, sizeof(myname), "%s%d", device_get_name(dev), 656 device_get_unit(dev)); 657 for (i = resource_query_string(-1, "at", myname); i != -1; 658 i = resource_query_string(i, "at", myname)) 659 fdc_add_device(dev, resource_query_name(i), 660 resource_query_unit(i)); 661 #ifdef FDC_YE 662 /* 663 * don't succeed on probe; wait 664 * for PCCARD subsystem to do it 665 */ 666 if (dev->id_flags & FDC_IS_PCMCIA) 667 return(0); 668 #endif 669 return (0); 670 671 out: 672 if (fdc->fdc_intr) 673 BUS_TEARDOWN_INTR(device_get_parent(dev), dev, fdc->res_irq, 674 fdc->fdc_intr); 675 if (fdc->res_irq != 0) { 676 bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 677 fdc->res_irq); 678 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 679 fdc->res_irq); 680 } 681 if (fdc->res_ioport != 0) { 682 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 683 fdc->res_ioport); 684 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 685 fdc->res_ioport); 686 } 687 if (fdc->res_drq != 0) { 688 bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 689 fdc->res_drq); 690 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 691 fdc->res_drq); 692 } 693 return (error); 694 } 695 696 /* 697 * Aped dfr@freebsd.org's isa_add_device(). 698 */ 699 static void 700 fdc_add_device(device_t dev, const char *name, int unit) 701 { 702 int disabled, *ivar; 703 device_t child; 704 705 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT); 706 if (ivar == 0) 707 return; 708 if (resource_int_value(name, unit, "drive", ivar) != 0) 709 *ivar = 0; 710 child = device_add_child(dev, name, unit, ivar); 711 if (child == 0) 712 return; 713 if (resource_int_value(name, unit, "disabled", &disabled) == 0 714 && disabled != 0) 715 device_disable(child); 716 } 717 718 static int 719 fdc_attach(device_t dev) 720 { 721 struct fdc_data *fdc = device_get_softc(dev); 722 fdcu_t fdcu = device_get_unit(dev); 723 724 fdc->fdcu = fdcu; 725 fdc->flags |= FDC_ATTACHED; 726 727 /* Acquire the DMA channel forever, The driver will do the rest */ 728 /* XXX should integrate with rman */ 729 isa_dma_acquire(fdc->dmachan); 730 isa_dmainit(fdc->dmachan, 128 << 3 /* XXX max secsize */); 731 fdc->state = DEVIDLE; 732 733 /* reset controller, turn motor off, clear fdout mirror reg */ 734 outb(fdc->baseport + FDOUT, ((fdc->fdout = 0))); 735 bufq_init(&fdc->head); 736 737 #ifdef FIFO_BEFORE_MOTORON 738 /* Hmm, this doesn't work here - is set_motor() magic? -Peter */ 739 if (fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN 740 && enable_fifo(fdc) == 0) { 741 device_print_prettyname(dev); 742 printf("FIFO enabled, %d bytes threshold\n", fifo_threshold); 743 } 744 #endif 745 /* 746 * Probe and attach any children as were configured above. 747 */ 748 return (bus_generic_attach(dev)); 749 } 750 751 static int 752 fdc_print_child(device_t me, device_t child) 753 { 754 int retval = 0; 755 756 retval += bus_print_child_header(me, child); 757 retval += printf(" on %s drive %d\n", device_get_nameunit(me), 758 *(int *)device_get_ivars(child)); 759 760 return (retval); 761 } 762 763 static int 764 fd_probe(device_t dev) 765 { 766 int i; 767 u_int fdt, st0, st3; 768 struct fd_data *fd; 769 struct fdc_data *fdc; 770 fdsu_t fdsu; 771 #ifndef FIFO_BEFORE_MOTORON 772 static int fd_fifo = 0; 773 #endif 774 775 fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */ 776 fd = device_get_softc(dev); 777 fdc = device_get_softc(device_get_parent(dev)); 778 779 bzero(fd, sizeof *fd); 780 fd->dev = dev; 781 fd->fdc = fdc; 782 fd->fdsu = fdsu; 783 fd->fdu = device_get_unit(dev); 784 785 #ifdef __i386__ 786 /* look up what bios thinks we have */ 787 switch (fd->fdu) { 788 case 0: 789 if (isa_get_flags(fdc->fdc_dev) & FDC_PRETEND_D0) 790 fdt = RTCFDT_144M | RTCFDT_144M_PRETENDED; 791 else 792 fdt = (rtcin(RTC_FDISKETTE) & 0xf0); 793 break; 794 case 1: 795 fdt = ((rtcin(RTC_FDISKETTE) << 4) & 0xf0); 796 break; 797 default: 798 fdt = RTCFDT_NONE; 799 break; 800 } 801 #else 802 fdt = RTCFDT_144M; /* XXX probably */ 803 #endif 804 805 /* is there a unit? */ 806 if (fdt == RTCFDT_NONE) 807 return (ENXIO); 808 809 /* select it */ 810 set_motor(fdc, fdsu, TURNON); 811 DELAY(1000000); /* 1 sec */ 812 813 #ifndef FIFO_BEFORE_MOTORON 814 if (fd_fifo == 0 && fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN 815 && enable_fifo(fdc) == 0) { 816 device_print_prettyname(device_get_parent(dev)); 817 printf("FIFO enabled, %d bytes threshold\n", fifo_threshold); 818 } 819 fd_fifo = 1; 820 #endif 821 822 if ((fd_cmd(fdc, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) 823 && (st3 & NE7_ST3_T0)) { 824 /* if at track 0, first seek inwards */ 825 /* seek some steps: */ 826 fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0); 827 DELAY(300000); /* ...wait a moment... */ 828 fd_sense_int(fdc, 0, 0); /* make ctrlr happy */ 829 } 830 831 /* If we're at track 0 first seek inwards. */ 832 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) { 833 /* Seek some steps... */ 834 if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 835 /* ...wait a moment... */ 836 DELAY(300000); 837 /* make ctrlr happy: */ 838 fd_sense_int(fdc, 0, 0); 839 } 840 } 841 842 for (i = 0; i < 2; i++) { 843 /* 844 * we must recalibrate twice, just in case the 845 * heads have been beyond cylinder 76, since most 846 * FDCs still barf when attempting to recalibrate 847 * more than 77 steps 848 */ 849 /* go back to 0: */ 850 if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 851 /* a second being enough for full stroke seek*/ 852 DELAY(i == 0 ? 1000000 : 300000); 853 854 /* anything responding? */ 855 if (fd_sense_int(fdc, &st0, 0) == 0 && 856 (st0 & NE7_ST0_EC) == 0) 857 break; /* already probed succesfully */ 858 } 859 } 860 861 set_motor(fdc, fdsu, TURNOFF); 862 863 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */ 864 return (ENXIO); 865 866 fd->track = FD_NO_TRACK; 867 fd->fdc = fdc; 868 fd->fdsu = fdsu; 869 fd->options = 0; 870 callout_handle_init(&fd->toffhandle); 871 callout_handle_init(&fd->tohandle); 872 873 switch (fdt) { 874 case RTCFDT_12M: 875 device_set_desc(dev, "1200-KB 5.25\" drive"); 876 fd->type = FD_1200; 877 break; 878 case RTCFDT_144M | RTCFDT_144M_PRETENDED: 879 device_set_desc(dev, "config-pretended 1440-MB 3.5\" drive"); 880 fdt = RTCFDT_144M; 881 fd->type = FD_1440; 882 case RTCFDT_144M: 883 device_set_desc(dev, "1440-KB 3.5\" drive"); 884 fd->type = FD_1440; 885 break; 886 case RTCFDT_288M: 887 case RTCFDT_288M_1: 888 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 889 fd->type = FD_1440; 890 break; 891 case RTCFDT_360K: 892 device_set_desc(dev, "360-KB 5.25\" drive"); 893 fd->type = FD_360; 894 break; 895 case RTCFDT_720K: 896 printf("720-KB 3.5\" drive"); 897 fd->type = FD_720; 898 break; 899 default: 900 return (ENXIO); 901 } 902 return (0); 903 } 904 905 static int 906 fd_attach(device_t dev) 907 { 908 struct fd_data *fd; 909 #if 0 910 int i; 911 int mynor; 912 int typemynor; 913 int typesize; 914 #endif 915 916 fd = device_get_softc(dev); 917 918 make_dev(&fd_cdevsw, (fd->fdu << 6), 919 UID_ROOT, GID_OPERATOR, 0640, "rfd%d", fd->fdu); 920 921 #if 0 922 /* Other make_dev() go here. */ 923 #endif 924 925 /* 926 * Export the drive to the devstat interface. 927 */ 928 devstat_add_entry(&fd->device_stats, device_get_name(dev), 929 device_get_unit(dev), 512, DEVSTAT_NO_ORDERED_TAGS, 930 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER, 931 DEVSTAT_PRIORITY_FD); 932 return (0); 933 } 934 935 #ifdef FDC_YE 936 /* 937 * this is a subset of fdattach() optimized for the Y-E Data 938 * PCMCIA floppy drive. 939 */ 940 static int yeattach(struct isa_device *dev) 941 { 942 fdcu_t fdcu = dev->id_unit; 943 fdc_p fdc = fdc_data + fdcu; 944 fdsu_t fdsu = 0; /* assume 1 drive per YE controller */ 945 fdu_t fdu; 946 fd_p fd; 947 int st0, st3, i; 948 fdc->fdcu = fdcu; 949 /* 950 * the FDC_PCMCIA flag is used to to indicate special PIO is used 951 * instead of DMA 952 */ 953 fdc->flags = FDC_ATTACHED|FDC_PCMCIA; 954 fdc->state = DEVIDLE; 955 /* reset controller, turn motor off, clear fdout mirror reg */ 956 outb(fdc->baseport + FDOUT, ((fdc->fdout = 0))); 957 bufq_init(&fdc->head); 958 /* 959 * assume 2 drives/ "normal" controller 960 */ 961 fdu = fdcu * 2; 962 if (fdu >= NFD) { 963 printf("fdu %d >= NFD\n",fdu); 964 return(0); 965 }; 966 fd = &fd_data[fdu]; 967 968 set_motor(fdcu, fdsu, TURNON); 969 DELAY(1000000); /* 1 sec */ 970 fdc->fdct = FDC_NE765; 971 972 if ((fd_cmd(fdcu, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) && 973 (st3 & NE7_ST3_T0)) { 974 /* if at track 0, first seek inwards */ 975 /* seek some steps: */ 976 (void)fd_cmd(fdcu, 3, NE7CMD_SEEK, fdsu, 10, 0); 977 DELAY(300000); /* ...wait a moment... */ 978 (void)fd_sense_int(fdc, 0, 0); /* make ctrlr happy */ 979 } 980 981 /* If we're at track 0 first seek inwards. */ 982 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) { 983 /* Seek some steps... */ 984 if (fd_cmd(fdcu, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 985 /* ...wait a moment... */ 986 DELAY(300000); 987 /* make ctrlr happy: */ 988 (void)fd_sense_int(fdc, 0, 0); 989 } 990 } 991 992 for(i = 0; i < 2; i++) { 993 /* 994 * we must recalibrate twice, just in case the 995 * heads have been beyond cylinder 76, since most 996 * FDCs still barf when attempting to recalibrate 997 * more than 77 steps 998 */ 999 /* go back to 0: */ 1000 if (fd_cmd(fdcu, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1001 /* a second being enough for full stroke seek*/ 1002 DELAY(i == 0? 1000000: 300000); 1003 1004 /* anything responding? */ 1005 if (fd_sense_int(fdc, &st0, 0) == 0 && 1006 (st0 & NE7_ST0_EC) == 0) 1007 break; /* already probed succesfully */ 1008 } 1009 } 1010 1011 set_motor(fdcu, fdsu, TURNOFF); 1012 1013 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */ 1014 return(0); 1015 1016 fd->track = FD_NO_TRACK; 1017 fd->fdc = fdc; 1018 fd->fdsu = fdsu; 1019 fd->options = 0; 1020 printf("fdc%d: 1.44MB 3.5in PCMCIA\n", fdcu); 1021 fd->type = FD_1440; 1022 1023 return (1); 1024 } 1025 #endif 1026 1027 /****************************************************************************/ 1028 /* motor control stuff */ 1029 /* remember to not deselect the drive we're working on */ 1030 /****************************************************************************/ 1031 static void 1032 set_motor(struct fdc_data *fdc, int fdsu, int turnon) 1033 { 1034 int fdout = fdc->fdout; 1035 int needspecify = 0; 1036 1037 if(turnon) { 1038 fdout &= ~FDO_FDSEL; 1039 fdout |= (FDO_MOEN0 << fdsu) + fdsu; 1040 } else 1041 fdout &= ~(FDO_MOEN0 << fdsu); 1042 1043 if(!turnon 1044 && (fdout & (FDO_MOEN0+FDO_MOEN1+FDO_MOEN2+FDO_MOEN3)) == 0) 1045 /* gonna turn off the last drive, put FDC to bed */ 1046 fdout &= ~ (FDO_FRST|FDO_FDMAEN); 1047 else { 1048 /* make sure controller is selected and specified */ 1049 if((fdout & (FDO_FRST|FDO_FDMAEN)) == 0) 1050 needspecify = 1; 1051 fdout |= (FDO_FRST|FDO_FDMAEN); 1052 } 1053 1054 outb(fdc->baseport+FDOUT, fdout); 1055 fdc->fdout = fdout; 1056 TRACE1("[0x%x->FDOUT]", fdout); 1057 1058 if (needspecify) { 1059 /* 1060 * XXX 1061 * special case: since we have just woken up the FDC 1062 * from its sleep, we silently assume the command will 1063 * be accepted, and do not test for a timeout 1064 */ 1065 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1066 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1067 0); 1068 if (fdc->flags & FDC_HAS_FIFO) 1069 (void) enable_fifo(fdc); 1070 } 1071 } 1072 1073 static void 1074 fd_turnoff(void *xfd) 1075 { 1076 int s; 1077 fd_p fd = xfd; 1078 1079 TRACE1("[fd%d: turnoff]", fd->fdu); 1080 1081 /* 1082 * Don't turn off the motor yet if the drive is active. 1083 * XXX shouldn't even schedule turnoff until drive is inactive 1084 * and nothing is queued on it. 1085 */ 1086 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) { 1087 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 1088 return; 1089 } 1090 1091 s = splbio(); 1092 fd->flags &= ~FD_MOTOR; 1093 set_motor(fd->fdc, fd->fdsu, TURNOFF); 1094 splx(s); 1095 } 1096 1097 static void 1098 fd_motor_on(void *xfd) 1099 { 1100 int s; 1101 fd_p fd = xfd; 1102 1103 s = splbio(); 1104 fd->flags &= ~FD_MOTOR_WAIT; 1105 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT)) 1106 { 1107 fdc_intr(fd->fdc); 1108 } 1109 splx(s); 1110 } 1111 1112 static void 1113 fd_turnon(fd_p fd) 1114 { 1115 if(!(fd->flags & FD_MOTOR)) 1116 { 1117 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT); 1118 set_motor(fd->fdc, fd->fdsu, TURNON); 1119 timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */ 1120 } 1121 } 1122 1123 static void 1124 fdc_reset(fdc_p fdc) 1125 { 1126 /* Try a reset, keep motor on */ 1127 outb(fdc->baseport + FDOUT, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1128 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1129 DELAY(100); 1130 /* enable FDC, but defer interrupts a moment */ 1131 outb(fdc->baseport + FDOUT, fdc->fdout & ~FDO_FDMAEN); 1132 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN); 1133 DELAY(100); 1134 outb(fdc->baseport + FDOUT, fdc->fdout); 1135 TRACE1("[0x%x->FDOUT]", fdc->fdout); 1136 1137 /* XXX after a reset, silently believe the FDC will accept commands */ 1138 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1139 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1140 0); 1141 if (fdc->flags & FDC_HAS_FIFO) 1142 (void) enable_fifo(fdc); 1143 } 1144 1145 /****************************************************************************/ 1146 /* fdc in/out */ 1147 /****************************************************************************/ 1148 int 1149 in_fdc(struct fdc_data *fdc) 1150 { 1151 int baseport = fdc->baseport; 1152 int i, j = 100000; 1153 while ((i = inb(baseport+FDSTS) & (NE7_DIO|NE7_RQM)) 1154 != (NE7_DIO|NE7_RQM) && j-- > 0) 1155 if (i == NE7_RQM) 1156 return fdc_err(fdc, "ready for output in input\n"); 1157 if (j <= 0) 1158 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1159 #ifdef FDC_DEBUG 1160 i = inb(baseport+FDDATA); 1161 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1162 return(i); 1163 #else /* !FDC_DEBUG */ 1164 return inb(baseport+FDDATA); 1165 #endif /* FDC_DEBUG */ 1166 } 1167 1168 /* 1169 * fd_in: Like in_fdc, but allows you to see if it worked. 1170 */ 1171 static int 1172 fd_in(struct fdc_data *fdc, int *ptr) 1173 { 1174 int baseport = fdc->baseport; 1175 int i, j = 100000; 1176 while ((i = inb(baseport+FDSTS) & (NE7_DIO|NE7_RQM)) 1177 != (NE7_DIO|NE7_RQM) && j-- > 0) 1178 if (i == NE7_RQM) 1179 return fdc_err(fdc, "ready for output in input\n"); 1180 if (j <= 0) 1181 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1182 #ifdef FDC_DEBUG 1183 i = inb(baseport+FDDATA); 1184 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1185 *ptr = i; 1186 return 0; 1187 #else /* !FDC_DEBUG */ 1188 i = inb(baseport+FDDATA); 1189 if (ptr) 1190 *ptr = i; 1191 return 0; 1192 #endif /* FDC_DEBUG */ 1193 } 1194 1195 int 1196 out_fdc(struct fdc_data *fdc, int x) 1197 { 1198 int baseport = fdc->baseport; 1199 int i; 1200 1201 /* Check that the direction bit is set */ 1202 i = 100000; 1203 while ((inb(baseport+FDSTS) & NE7_DIO) && i-- > 0); 1204 if (i <= 0) return fdc_err(fdc, "direction bit not set\n"); 1205 1206 /* Check that the floppy controller is ready for a command */ 1207 i = 100000; 1208 while ((inb(baseport+FDSTS) & NE7_RQM) == 0 && i-- > 0); 1209 if (i <= 0) 1210 return fdc_err(fdc, bootverbose? "output ready timeout\n": 0); 1211 1212 /* Send the command and return */ 1213 outb(baseport+FDDATA, x); 1214 TRACE1("[0x%x->FDDATA]", x); 1215 return (0); 1216 } 1217 1218 /****************************************************************************/ 1219 /* fdopen/fdclose */ 1220 /****************************************************************************/ 1221 int 1222 Fdopen(dev_t dev, int flags, int mode, struct proc *p) 1223 { 1224 fdu_t fdu = FDUNIT(minor(dev)); 1225 int type = FDTYPE(minor(dev)); 1226 fd_p fd; 1227 fdc_p fdc; 1228 1229 /* check bounds */ 1230 if ((fd = devclass_get_softc(fd_devclass, fdu)) == 0) 1231 return (ENXIO); 1232 fdc = fd->fdc; 1233 if ((fdc == NULL) || (fd->type == NO_TYPE)) 1234 return (ENXIO); 1235 if (type > NUMDENS) 1236 return (ENXIO); 1237 if (type == 0) 1238 type = fd->type; 1239 else { 1240 /* 1241 * For each type of basic drive, make sure we are trying 1242 * to open a type it can do, 1243 */ 1244 if (type != fd->type) { 1245 switch (fd->type) { 1246 case FD_360: 1247 return (ENXIO); 1248 case FD_720: 1249 if ( type != FD_820 1250 && type != FD_800 1251 ) 1252 return (ENXIO); 1253 break; 1254 case FD_1200: 1255 switch (type) { 1256 case FD_1480: 1257 type = FD_1480in5_25; 1258 break; 1259 case FD_1440: 1260 type = FD_1440in5_25; 1261 break; 1262 case FD_820: 1263 type = FD_820in5_25; 1264 break; 1265 case FD_800: 1266 type = FD_800in5_25; 1267 break; 1268 case FD_720: 1269 type = FD_720in5_25; 1270 break; 1271 case FD_360: 1272 type = FD_360in5_25; 1273 break; 1274 default: 1275 return(ENXIO); 1276 } 1277 break; 1278 case FD_1440: 1279 if ( type != FD_1720 1280 && type != FD_1480 1281 && type != FD_1200 1282 && type != FD_820 1283 && type != FD_800 1284 && type != FD_720 1285 ) 1286 return(ENXIO); 1287 break; 1288 } 1289 } 1290 } 1291 fd->ft = fd_types + type - 1; 1292 fd->flags |= FD_OPEN; 1293 device_busy(fd->dev); 1294 device_busy(fd->fdc->fdc_dev); 1295 return 0; 1296 } 1297 1298 int 1299 fdclose(dev_t dev, int flags, int mode, struct proc *p) 1300 { 1301 fdu_t fdu = FDUNIT(minor(dev)); 1302 struct fd_data *fd; 1303 1304 fd = devclass_get_softc(fd_devclass, fdu); 1305 fd->flags &= ~FD_OPEN; 1306 fd->options &= ~FDOPT_NORETRY; 1307 1308 return (0); 1309 } 1310 1311 /****************************************************************************/ 1312 /* fdstrategy */ 1313 /****************************************************************************/ 1314 void 1315 fdstrategy(struct buf *bp) 1316 { 1317 unsigned nblocks, blknum, cando; 1318 int s; 1319 fdu_t fdu; 1320 fdc_p fdc; 1321 fd_p fd; 1322 size_t fdblk; 1323 1324 fdu = FDUNIT(minor(bp->b_dev)); 1325 fd = devclass_get_softc(fd_devclass, fdu); 1326 if (fd == 0) 1327 panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)", 1328 (u_long)major(bp->b_dev), (u_long)minor(bp->b_dev)); 1329 fdc = fd->fdc; 1330 #ifdef FDC_YE 1331 if (fd->type == NO_TYPE) { 1332 bp->b_error = ENXIO; 1333 bp->b_flags |= B_ERROR; 1334 /* 1335 * I _refuse_ to use a goto 1336 */ 1337 biodone(bp); 1338 return; 1339 }; 1340 #endif 1341 1342 fdblk = 128 << (fd->ft->secsize); 1343 if (!(bp->b_flags & B_FORMAT)) { 1344 if (bp->b_blkno < 0) { 1345 printf( 1346 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n", 1347 fdu, (u_long)bp->b_blkno, bp->b_bcount); 1348 bp->b_error = EINVAL; 1349 bp->b_flags |= B_ERROR; 1350 goto bad; 1351 } 1352 if ((bp->b_bcount % fdblk) != 0) { 1353 bp->b_error = EINVAL; 1354 bp->b_flags |= B_ERROR; 1355 goto bad; 1356 } 1357 } 1358 1359 /* 1360 * Set up block calculations. 1361 */ 1362 if (bp->b_blkno > 20000000) { 1363 /* 1364 * Reject unreasonably high block number, prevent the 1365 * multiplication below from overflowing. 1366 */ 1367 bp->b_error = EINVAL; 1368 bp->b_flags |= B_ERROR; 1369 goto bad; 1370 } 1371 blknum = (unsigned) bp->b_blkno * DEV_BSIZE/fdblk; 1372 nblocks = fd->ft->size; 1373 bp->b_resid = 0; 1374 if (blknum + (bp->b_bcount / fdblk) > nblocks) { 1375 if (blknum <= nblocks) { 1376 cando = (nblocks - blknum) * fdblk; 1377 bp->b_resid = bp->b_bcount - cando; 1378 if (cando == 0) 1379 goto bad; /* not actually bad but EOF */ 1380 } else { 1381 bp->b_error = EINVAL; 1382 bp->b_flags |= B_ERROR; 1383 goto bad; 1384 } 1385 } 1386 bp->b_pblkno = bp->b_blkno; 1387 s = splbio(); 1388 bufqdisksort(&fdc->head, bp); 1389 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */ 1390 1391 /* Tell devstat we are starting on the transaction */ 1392 devstat_start_transaction(&fd->device_stats); 1393 1394 fdstart(fdc); 1395 splx(s); 1396 return; 1397 1398 bad: 1399 biodone(bp); 1400 } 1401 1402 /***************************************************************\ 1403 * fdstart * 1404 * We have just queued something.. if the controller is not busy * 1405 * then simulate the case where it has just finished a command * 1406 * So that it (the interrupt routine) looks on the queue for more* 1407 * work to do and picks up what we just added. * 1408 * If the controller is already busy, we need do nothing, as it * 1409 * will pick up our work when the present work completes * 1410 \***************************************************************/ 1411 static void 1412 fdstart(struct fdc_data *fdc) 1413 { 1414 int s; 1415 1416 s = splbio(); 1417 if(fdc->state == DEVIDLE) 1418 { 1419 fdc_intr(fdc); 1420 } 1421 splx(s); 1422 } 1423 1424 static void 1425 fd_iotimeout(void *xfdc) 1426 { 1427 fdc_p fdc; 1428 int s; 1429 1430 fdc = xfdc; 1431 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); 1432 1433 /* 1434 * Due to IBM's brain-dead design, the FDC has a faked ready 1435 * signal, hardwired to ready == true. Thus, any command 1436 * issued if there's no diskette in the drive will _never_ 1437 * complete, and must be aborted by resetting the FDC. 1438 * Many thanks, Big Blue! 1439 * The FDC must not be reset directly, since that would 1440 * interfere with the state machine. Instead, pretend that 1441 * the command completed but was invalid. The state machine 1442 * will reset the FDC and retry once. 1443 */ 1444 s = splbio(); 1445 fdc->status[0] = NE7_ST0_IC_IV; 1446 fdc->flags &= ~FDC_STAT_VALID; 1447 fdc->state = IOTIMEDOUT; 1448 fdc_intr(fdc); 1449 splx(s); 1450 } 1451 1452 /* just ensure it has the right spl */ 1453 static void 1454 fd_pseudointr(void *xfdc) 1455 { 1456 int s; 1457 1458 s = splbio(); 1459 fdc_intr(xfdc); 1460 splx(s); 1461 } 1462 1463 /***********************************************************************\ 1464 * fdintr * 1465 * keep calling the state machine until it returns a 0 * 1466 * ALWAYS called at SPLBIO * 1467 \***********************************************************************/ 1468 static void 1469 fdc_intr(void *xfdc) 1470 { 1471 fdc_p fdc = xfdc; 1472 while(fdstate(fdc)) 1473 ; 1474 } 1475 1476 #ifdef FDC_YE 1477 /* 1478 * magic pseudo-DMA initialization for YE FDC. Sets count and 1479 * direction 1480 */ 1481 #define SET_BCDR(wr,cnt,port) outb(port,(((cnt)-1) & 0xff)); \ 1482 outb(port+1,((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))) 1483 1484 /* 1485 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy 1486 */ 1487 static int fdcpio(fdcu_t fdcu, long flags, caddr_t addr, u_int count) 1488 { 1489 u_char *cptr = (u_char *)addr; 1490 fdc_p fdc = &fdc_data[fdcu]; 1491 int io = fdc->baseport; 1492 1493 if (flags & B_READ) { 1494 if (fdc->state != PIOREAD) { 1495 fdc->state = PIOREAD; 1496 return(0); 1497 }; 1498 SET_BCDR(0,count,io); 1499 insb(io+FDC_YE_DATAPORT,cptr,count); 1500 } else { 1501 outsb(io+FDC_YE_DATAPORT,cptr,count); 1502 SET_BCDR(0,count,io); 1503 }; 1504 return(1); 1505 } 1506 #endif /* FDC_YE */ 1507 1508 /***********************************************************************\ 1509 * The controller state machine. * 1510 * if it returns a non zero value, it should be called again immediatly * 1511 \***********************************************************************/ 1512 static int 1513 fdstate(fdc_p fdc) 1514 { 1515 int read, format, head, i, sec = 0, sectrac, st0, cyl, st3; 1516 unsigned blknum = 0, b_cylinder = 0; 1517 fdu_t fdu = fdc->fdu; 1518 fd_p fd; 1519 register struct buf *bp; 1520 struct fd_formb *finfo = NULL; 1521 size_t fdblk; 1522 1523 bp = fdc->bp; 1524 if (bp == NULL) { 1525 bp = bufq_first(&fdc->head); 1526 if (bp != NULL) { 1527 bufq_remove(&fdc->head, bp); 1528 fdc->bp = bp; 1529 } 1530 } 1531 if (bp == NULL) { 1532 /***********************************************\ 1533 * nothing left for this controller to do * 1534 * Force into the IDLE state, * 1535 \***********************************************/ 1536 fdc->state = DEVIDLE; 1537 if (fdc->fd) { 1538 device_print_prettyname(fdc->fdc_dev); 1539 printf("unexpected valid fd pointer\n"); 1540 fdc->fd = (fd_p) 0; 1541 fdc->fdu = -1; 1542 } 1543 TRACE1("[fdc%d IDLE]", fdc->fdcu); 1544 return (0); 1545 } 1546 fdu = FDUNIT(minor(bp->b_dev)); 1547 fd = devclass_get_softc(fd_devclass, fdu); 1548 fdblk = 128 << fd->ft->secsize; 1549 if (fdc->fd && (fd != fdc->fd)) { 1550 device_print_prettyname(fd->dev); 1551 printf("confused fd pointers\n"); 1552 } 1553 read = bp->b_flags & B_READ; 1554 format = bp->b_flags & B_FORMAT; 1555 if (format) { 1556 finfo = (struct fd_formb *)bp->b_data; 1557 fd->skip = (char *)&(finfo->fd_formb_cylno(0)) 1558 - (char *)finfo; 1559 } 1560 if (fdc->state == DOSEEK || fdc->state == SEEKCOMPLETE) { 1561 blknum = (unsigned) bp->b_pblkno * DEV_BSIZE/fdblk + 1562 fd->skip/fdblk; 1563 b_cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 1564 } 1565 TRACE1("fd%d", fdu); 1566 TRACE1("[%s]", fdstates[fdc->state]); 1567 TRACE1("(0x%x)", fd->flags); 1568 untimeout(fd_turnoff, fd, fd->toffhandle); 1569 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 1570 switch (fdc->state) 1571 { 1572 case DEVIDLE: 1573 case FINDWORK: /* we have found new work */ 1574 fdc->retry = 0; 1575 fd->skip = 0; 1576 fdc->fd = fd; 1577 fdc->fdu = fdu; 1578 outb(fdc->baseport+FDCTL, fd->ft->trans); 1579 TRACE1("[0x%x->FDCTL]", fd->ft->trans); 1580 /*******************************************************\ 1581 * If the next drive has a motor startup pending, then * 1582 * it will start up in its own good time * 1583 \*******************************************************/ 1584 if(fd->flags & FD_MOTOR_WAIT) { 1585 fdc->state = MOTORWAIT; 1586 return (0); /* come back later */ 1587 } 1588 /*******************************************************\ 1589 * Maybe if it's not starting, it SHOULD be starting * 1590 \*******************************************************/ 1591 if (!(fd->flags & FD_MOTOR)) 1592 { 1593 fdc->state = MOTORWAIT; 1594 fd_turnon(fd); 1595 return (0); 1596 } 1597 else /* at least make sure we are selected */ 1598 { 1599 set_motor(fdc, fd->fdsu, TURNON); 1600 } 1601 if (fdc->flags & FDC_NEEDS_RESET) { 1602 fdc->state = RESETCTLR; 1603 fdc->flags &= ~FDC_NEEDS_RESET; 1604 } else 1605 fdc->state = DOSEEK; 1606 break; 1607 case DOSEEK: 1608 if (b_cylinder == (unsigned)fd->track) 1609 { 1610 fdc->state = SEEKCOMPLETE; 1611 break; 1612 } 1613 if (fd_cmd(fdc, 3, NE7CMD_SEEK, 1614 fd->fdsu, b_cylinder * fd->ft->steptrac, 1615 0)) 1616 { 1617 /* 1618 * seek command not accepted, looks like 1619 * the FDC went off to the Saints... 1620 */ 1621 fdc->retry = 6; /* try a reset */ 1622 return(retrier(fdc)); 1623 } 1624 fd->track = FD_NO_TRACK; 1625 fdc->state = SEEKWAIT; 1626 return(0); /* will return later */ 1627 case SEEKWAIT: 1628 /* allow heads to settle */ 1629 timeout(fd_pseudointr, fdc, hz / 16); 1630 fdc->state = SEEKCOMPLETE; 1631 return(0); /* will return later */ 1632 case SEEKCOMPLETE : /* SEEK DONE, START DMA */ 1633 /* Make sure seek really happened*/ 1634 if(fd->track == FD_NO_TRACK) { 1635 int descyl = b_cylinder * fd->ft->steptrac; 1636 do { 1637 /* 1638 * This might be a "ready changed" interrupt, 1639 * which cannot really happen since the 1640 * RDY pin is hardwired to + 5 volts. This 1641 * generally indicates a "bouncing" intr 1642 * line, so do one of the following: 1643 * 1644 * When running on an enhanced FDC that is 1645 * known to not go stuck after responding 1646 * with INVALID, fetch all interrupt states 1647 * until seeing either an INVALID or a 1648 * real interrupt condition. 1649 * 1650 * When running on a dumb old NE765, give 1651 * up immediately. The controller will 1652 * provide up to four dummy RC interrupt 1653 * conditions right after reset (for the 1654 * corresponding four drives), so this is 1655 * our only chance to get notice that it 1656 * was not the FDC that caused the interrupt. 1657 */ 1658 if (fd_sense_int(fdc, &st0, &cyl) 1659 == FD_NOT_VALID) 1660 return 0; 1661 if(fdc->fdct == FDC_NE765 1662 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 1663 return 0; /* hope for a real intr */ 1664 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 1665 1666 if (0 == descyl) { 1667 int failed = 0; 1668 /* 1669 * seek to cyl 0 requested; make sure we are 1670 * really there 1671 */ 1672 if (fd_sense_drive_status(fdc, &st3)) 1673 failed = 1; 1674 if ((st3 & NE7_ST3_T0) == 0) { 1675 printf( 1676 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", 1677 fdu, st3, NE7_ST3BITS); 1678 failed = 1; 1679 } 1680 1681 if (failed) { 1682 if(fdc->retry < 3) 1683 fdc->retry = 3; 1684 return (retrier(fdc)); 1685 } 1686 } 1687 1688 if (cyl != descyl) { 1689 printf( 1690 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", 1691 fdu, descyl, cyl, st0); 1692 if (fdc->retry < 3) 1693 fdc->retry = 3; 1694 return (retrier(fdc)); 1695 } 1696 } 1697 1698 fd->track = b_cylinder; 1699 #ifdef FDC_YE 1700 if (!(fdc->flags & FDC_PCMCIA)) 1701 #endif 1702 isa_dmastart(bp->b_flags, bp->b_data+fd->skip, 1703 format ? bp->b_bcount : fdblk, fdc->dmachan); 1704 sectrac = fd->ft->sectrac; 1705 sec = blknum % (sectrac * fd->ft->heads); 1706 head = sec / sectrac; 1707 sec = sec % sectrac + 1; 1708 fd->hddrv = ((head&1)<<2)+fdu; 1709 1710 if(format || !read) 1711 { 1712 /* make sure the drive is writable */ 1713 if(fd_sense_drive_status(fdc, &st3) != 0) 1714 { 1715 /* stuck controller? */ 1716 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1717 format ? bp->b_bcount : fdblk, 1718 fdc->dmachan); 1719 fdc->retry = 6; /* reset the beast */ 1720 return (retrier(fdc)); 1721 } 1722 if(st3 & NE7_ST3_WP) 1723 { 1724 /* 1725 * XXX YES! this is ugly. 1726 * in order to force the current operation 1727 * to fail, we will have to fake an FDC 1728 * error - all error handling is done 1729 * by the retrier() 1730 */ 1731 fdc->status[0] = NE7_ST0_IC_AT; 1732 fdc->status[1] = NE7_ST1_NW; 1733 fdc->status[2] = 0; 1734 fdc->status[3] = fd->track; 1735 fdc->status[4] = head; 1736 fdc->status[5] = sec; 1737 fdc->retry = 8; /* break out immediately */ 1738 fdc->state = IOTIMEDOUT; /* not really... */ 1739 return (1); 1740 } 1741 } 1742 1743 if (format) { 1744 #ifdef FDC_YE 1745 if (fdc->flags & FDC_PCMCIA) 1746 (void)fdcpio(fdcu,bp->b_flags, 1747 bp->b_data+fd->skip, 1748 bp->b_bcount); 1749 #endif 1750 /* formatting */ 1751 if(fd_cmd(fdc, 6, NE7CMD_FORMAT, head << 2 | fdu, 1752 finfo->fd_formb_secshift, 1753 finfo->fd_formb_nsecs, 1754 finfo->fd_formb_gaplen, 1755 finfo->fd_formb_fillbyte, 0)) { 1756 /* controller fell over */ 1757 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1758 format ? bp->b_bcount : fdblk, 1759 fdc->dmachan); 1760 fdc->retry = 6; 1761 return (retrier(fdc)); 1762 } 1763 } else { 1764 #ifdef FDC_YE 1765 if (fdc->flags & FDC_PCMCIA) { 1766 /* 1767 * this seems to be necessary even when 1768 * reading data 1769 */ 1770 SET_BCDR(1,fdblk,fdc->baseport); 1771 1772 /* 1773 * perform the write pseudo-DMA before 1774 * the WRITE command is sent 1775 */ 1776 if (!read) 1777 (void)fdcpio(fdcu,bp->b_flags, 1778 bp->b_data+fd->skip, 1779 fdblk); 1780 } 1781 #endif 1782 if (fd_cmd(fdc, 9, 1783 (read ? NE7CMD_READ : NE7CMD_WRITE), 1784 head << 2 | fdu, /* head & unit */ 1785 fd->track, /* track */ 1786 head, 1787 sec, /* sector + 1 */ 1788 fd->ft->secsize, /* sector size */ 1789 sectrac, /* sectors/track */ 1790 fd->ft->gap, /* gap size */ 1791 fd->ft->datalen, /* data length */ 1792 0)) { 1793 /* the beast is sleeping again */ 1794 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1795 format ? bp->b_bcount : fdblk, 1796 fdc->dmachan); 1797 fdc->retry = 6; 1798 return (retrier(fdc)); 1799 } 1800 } 1801 #ifdef FDC_YE 1802 if (fdc->flags & FDC_PCMCIA) 1803 /* 1804 * if this is a read, then simply await interrupt 1805 * before performing PIO 1806 */ 1807 if (read && !fdcpio(fdcu,bp->b_flags, 1808 bp->b_data+fd->skip,fdblk)) { 1809 fd->tohandle = timeout(fd_iotimeout, 1810 (caddr_t)fdcu, hz); 1811 return(0); /* will return later */ 1812 }; 1813 1814 /* 1815 * write (or format) operation will fall through and 1816 * await completion interrupt 1817 */ 1818 #endif 1819 fdc->state = IOCOMPLETE; 1820 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 1821 return (0); /* will return later */ 1822 #ifdef FDC_YE 1823 case PIOREAD: 1824 /* 1825 * actually perform the PIO read. The IOCOMPLETE case 1826 * removes the timeout for us. 1827 */ 1828 (void)fdcpio(fdcu,bp->b_flags,bp->b_data+fd->skip,fdblk); 1829 fdc->state = IOCOMPLETE; 1830 /* FALLTHROUGH */ 1831 #endif 1832 case IOCOMPLETE: /* IO DONE, post-analyze */ 1833 untimeout(fd_iotimeout, fdc, fd->tohandle); 1834 1835 if (fd_read_status(fdc, fd->fdsu)) { 1836 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1837 format ? bp->b_bcount : fdblk, 1838 fdc->dmachan); 1839 if (fdc->retry < 6) 1840 fdc->retry = 6; /* force a reset */ 1841 return (retrier(fdc)); 1842 } 1843 1844 fdc->state = IOTIMEDOUT; 1845 1846 /* FALLTHROUGH */ 1847 1848 case IOTIMEDOUT: 1849 #ifdef FDC_YE 1850 if (!(fdc->flags & FDC_PCMCIA)) 1851 #endif 1852 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1853 format ? bp->b_bcount : fdblk, fdc->dmachan); 1854 if (fdc->status[0] & NE7_ST0_IC) { 1855 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 1856 && fdc->status[1] & NE7_ST1_OR) { 1857 /* 1858 * DMA overrun. Someone hogged the bus 1859 * and didn't release it in time for the 1860 * next FDC transfer. 1861 * Just restart it, don't increment retry 1862 * count. (vak) 1863 */ 1864 fdc->state = SEEKCOMPLETE; 1865 return (1); 1866 } 1867 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV 1868 && fdc->retry < 6) 1869 fdc->retry = 6; /* force a reset */ 1870 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 1871 && fdc->status[2] & NE7_ST2_WC 1872 && fdc->retry < 3) 1873 fdc->retry = 3; /* force recalibrate */ 1874 return (retrier(fdc)); 1875 } 1876 /* All OK */ 1877 fd->skip += fdblk; 1878 if (!format && fd->skip < bp->b_bcount - bp->b_resid) { 1879 /* set up next transfer */ 1880 fdc->state = DOSEEK; 1881 } else { 1882 /* ALL DONE */ 1883 fd->skip = 0; 1884 fdc->bp = NULL; 1885 /* Tell devstat we have finished with the transaction */ 1886 devstat_end_transaction(&fd->device_stats, 1887 bp->b_bcount - bp->b_resid, 1888 DEVSTAT_TAG_NONE, 1889 (bp->b_flags & B_READ) ? 1890 DEVSTAT_READ : DEVSTAT_WRITE); 1891 biodone(bp); 1892 fdc->fd = (fd_p) 0; 1893 fdc->fdu = -1; 1894 fdc->state = FINDWORK; 1895 } 1896 return (1); 1897 case RESETCTLR: 1898 fdc_reset(fdc); 1899 fdc->retry++; 1900 fdc->state = RESETCOMPLETE; 1901 return (0); 1902 case RESETCOMPLETE: 1903 /* 1904 * Discard all the results from the reset so that they 1905 * can't cause an unexpected interrupt later. 1906 */ 1907 for (i = 0; i < 4; i++) 1908 (void)fd_sense_int(fdc, &st0, &cyl); 1909 fdc->state = STARTRECAL; 1910 /* Fall through. */ 1911 case STARTRECAL: 1912 if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) { 1913 /* arrgl */ 1914 fdc->retry = 6; 1915 return (retrier(fdc)); 1916 } 1917 fdc->state = RECALWAIT; 1918 return (0); /* will return later */ 1919 case RECALWAIT: 1920 /* allow heads to settle */ 1921 timeout(fd_pseudointr, fdc, hz / 8); 1922 fdc->state = RECALCOMPLETE; 1923 return (0); /* will return later */ 1924 case RECALCOMPLETE: 1925 do { 1926 /* 1927 * See SEEKCOMPLETE for a comment on this: 1928 */ 1929 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 1930 return 0; 1931 if(fdc->fdct == FDC_NE765 1932 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 1933 return 0; /* hope for a real intr */ 1934 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 1935 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0) 1936 { 1937 if(fdc->retry > 3) 1938 /* 1939 * a recalibrate from beyond cylinder 77 1940 * will "fail" due to the FDC limitations; 1941 * since people used to complain much about 1942 * the failure message, try not logging 1943 * this one if it seems to be the first 1944 * time in a line 1945 */ 1946 printf("fd%d: recal failed ST0 %b cyl %d\n", 1947 fdu, st0, NE7_ST0BITS, cyl); 1948 if(fdc->retry < 3) fdc->retry = 3; 1949 return (retrier(fdc)); 1950 } 1951 fd->track = 0; 1952 /* Seek (probably) necessary */ 1953 fdc->state = DOSEEK; 1954 return (1); /* will return immediatly */ 1955 case MOTORWAIT: 1956 if(fd->flags & FD_MOTOR_WAIT) 1957 { 1958 return (0); /* time's not up yet */ 1959 } 1960 if (fdc->flags & FDC_NEEDS_RESET) { 1961 fdc->state = RESETCTLR; 1962 fdc->flags &= ~FDC_NEEDS_RESET; 1963 } else { 1964 /* 1965 * If all motors were off, then the controller was 1966 * reset, so it has lost track of the current 1967 * cylinder. Recalibrate to handle this case. 1968 * But first, discard the results of the reset. 1969 */ 1970 fdc->state = RESETCOMPLETE; 1971 } 1972 return (1); /* will return immediatly */ 1973 default: 1974 device_print_prettyname(fdc->fdc_dev); 1975 printf("unexpected FD int->"); 1976 if (fd_read_status(fdc, fd->fdsu) == 0) 1977 printf("FDC status :%x %x %x %x %x %x %x ", 1978 fdc->status[0], 1979 fdc->status[1], 1980 fdc->status[2], 1981 fdc->status[3], 1982 fdc->status[4], 1983 fdc->status[5], 1984 fdc->status[6] ); 1985 else 1986 printf("No status available "); 1987 if (fd_sense_int(fdc, &st0, &cyl) != 0) 1988 { 1989 printf("[controller is dead now]\n"); 1990 return (0); 1991 } 1992 printf("ST0 = %x, PCN = %x\n", st0, cyl); 1993 return (0); 1994 } 1995 /*XXX confusing: some branches return immediately, others end up here*/ 1996 return (1); /* Come back immediatly to new state */ 1997 } 1998 1999 static int 2000 retrier(struct fdc_data *fdc) 2001 { 2002 register struct buf *bp; 2003 struct fd_data *fd; 2004 int fdu; 2005 2006 bp = fdc->bp; 2007 2008 /* XXX shouldn't this be cached somewhere? */ 2009 fdu = FDUNIT(minor(bp->b_dev)); 2010 fd = devclass_get_softc(fd_devclass, fdu); 2011 if (fd->options & FDOPT_NORETRY) 2012 goto fail; 2013 2014 switch (fdc->retry) { 2015 case 0: case 1: case 2: 2016 fdc->state = SEEKCOMPLETE; 2017 break; 2018 case 3: case 4: case 5: 2019 fdc->state = STARTRECAL; 2020 break; 2021 case 6: 2022 fdc->state = RESETCTLR; 2023 break; 2024 case 7: 2025 break; 2026 default: 2027 fail: 2028 { 2029 dev_t sav_b_dev = bp->b_dev; 2030 /* Trick diskerr */ 2031 bp->b_dev = makedev(major(bp->b_dev), 2032 (FDUNIT(minor(bp->b_dev))<<3)|RAW_PART); 2033 diskerr(bp, "fd", "hard error", LOG_PRINTF, 2034 fdc->fd->skip / DEV_BSIZE, 2035 (struct disklabel *)NULL); 2036 bp->b_dev = sav_b_dev; 2037 if (fdc->flags & FDC_STAT_VALID) 2038 { 2039 printf( 2040 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n", 2041 fdc->status[0], NE7_ST0BITS, 2042 fdc->status[1], NE7_ST1BITS, 2043 fdc->status[2], NE7_ST2BITS, 2044 fdc->status[3], fdc->status[4], 2045 fdc->status[5]); 2046 } 2047 else 2048 printf(" (No status)\n"); 2049 } 2050 bp->b_flags |= B_ERROR; 2051 bp->b_error = EIO; 2052 bp->b_resid += bp->b_bcount - fdc->fd->skip; 2053 fdc->bp = NULL; 2054 2055 /* Tell devstat we have finished with the transaction */ 2056 devstat_end_transaction(&fdc->fd->device_stats, 2057 bp->b_bcount - bp->b_resid, 2058 DEVSTAT_TAG_NONE, 2059 (bp->b_flags & B_READ) ? DEVSTAT_READ : 2060 DEVSTAT_WRITE); 2061 fdc->fd->skip = 0; 2062 biodone(bp); 2063 fdc->state = FINDWORK; 2064 fdc->flags |= FDC_NEEDS_RESET; 2065 fdc->fd = (fd_p) 0; 2066 fdc->fdu = -1; 2067 return (1); 2068 } 2069 fdc->retry++; 2070 return (1); 2071 } 2072 2073 static int 2074 fdformat(dev, finfo, p) 2075 dev_t dev; 2076 struct fd_formb *finfo; 2077 struct proc *p; 2078 { 2079 fdu_t fdu; 2080 fd_p fd; 2081 2082 struct buf *bp; 2083 int rv = 0, s; 2084 size_t fdblk; 2085 2086 fdu = FDUNIT(minor(dev)); 2087 fd = devclass_get_softc(fd_devclass, fdu); 2088 fdblk = 128 << fd->ft->secsize; 2089 2090 /* set up a buffer header for fdstrategy() */ 2091 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2092 if(bp == 0) 2093 return ENOBUFS; 2094 /* 2095 * keep the process from being swapped 2096 */ 2097 PHOLD(p); 2098 bzero((void *)bp, sizeof(struct buf)); 2099 BUF_LOCKINIT(bp); 2100 BUF_LOCK(bp, LK_EXCLUSIVE); 2101 bp->b_flags = B_PHYS | B_FORMAT; 2102 2103 /* 2104 * calculate a fake blkno, so fdstrategy() would initiate a 2105 * seek to the requested cylinder 2106 */ 2107 bp->b_blkno = (finfo->cyl * (fd->ft->sectrac * fd->ft->heads) 2108 + finfo->head * fd->ft->sectrac) * fdblk / DEV_BSIZE; 2109 2110 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2111 bp->b_data = (caddr_t)finfo; 2112 2113 /* now do the format */ 2114 bp->b_dev = dev; 2115 BUF_STRATEGY(bp, 0); 2116 2117 /* ...and wait for it to complete */ 2118 s = splbio(); 2119 while(!(bp->b_flags & B_DONE)) { 2120 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2121 if (rv == EWOULDBLOCK) 2122 break; 2123 } 2124 splx(s); 2125 2126 if (rv == EWOULDBLOCK) { 2127 /* timed out */ 2128 rv = EIO; 2129 biodone(bp); 2130 } 2131 if (bp->b_flags & B_ERROR) 2132 rv = bp->b_error; 2133 /* 2134 * allow the process to be swapped 2135 */ 2136 PRELE(p); 2137 BUF_UNLOCK(bp); 2138 BUF_LOCKFREE(bp); 2139 free(bp, M_TEMP); 2140 return rv; 2141 } 2142 2143 /* 2144 * TODO: don't allocate buffer on stack. 2145 */ 2146 2147 static int 2148 fdioctl(dev, cmd, addr, flag, p) 2149 dev_t dev; 2150 u_long cmd; 2151 caddr_t addr; 2152 int flag; 2153 struct proc *p; 2154 { 2155 fdu_t fdu = FDUNIT(minor(dev)); 2156 fd_p fd = devclass_get_softc(fd_devclass, fdu); 2157 size_t fdblk; 2158 2159 struct fd_type *fdt; 2160 struct disklabel *dl; 2161 char buffer[DEV_BSIZE]; 2162 int error = 0; 2163 2164 fdblk = 128 << fd->ft->secsize; 2165 2166 switch (cmd) { 2167 case DIOCGDINFO: 2168 bzero(buffer, sizeof (buffer)); 2169 dl = (struct disklabel *)buffer; 2170 dl->d_secsize = fdblk; 2171 fdt = fd->ft; 2172 dl->d_secpercyl = fdt->size / fdt->tracks; 2173 dl->d_type = DTYPE_FLOPPY; 2174 2175 if (readdisklabel(dkmodpart(dev, RAW_PART), dl) 2176 == NULL) 2177 error = 0; 2178 else 2179 error = EINVAL; 2180 2181 *(struct disklabel *)addr = *dl; 2182 break; 2183 2184 case DIOCSDINFO: 2185 if ((flag & FWRITE) == 0) 2186 error = EBADF; 2187 break; 2188 2189 case DIOCWLABEL: 2190 if ((flag & FWRITE) == 0) 2191 error = EBADF; 2192 break; 2193 2194 case DIOCWDINFO: 2195 if ((flag & FWRITE) == 0) { 2196 error = EBADF; 2197 break; 2198 } 2199 2200 dl = (struct disklabel *)addr; 2201 2202 if ((error = setdisklabel((struct disklabel *)buffer, dl, 2203 (u_long)0)) != 0) 2204 break; 2205 2206 error = writedisklabel(dev, (struct disklabel *)buffer); 2207 break; 2208 case FD_FORM: 2209 if ((flag & FWRITE) == 0) 2210 error = EBADF; /* must be opened for writing */ 2211 else if (((struct fd_formb *)addr)->format_version != 2212 FD_FORMAT_VERSION) 2213 error = EINVAL; /* wrong version of formatting prog */ 2214 else 2215 error = fdformat(dev, (struct fd_formb *)addr, p); 2216 break; 2217 2218 case FD_GTYPE: /* get drive type */ 2219 *(struct fd_type *)addr = *fd->ft; 2220 break; 2221 2222 case FD_STYPE: /* set drive type */ 2223 /* this is considered harmful; only allow for superuser */ 2224 if (suser(p) != 0) 2225 return EPERM; 2226 *fd->ft = *(struct fd_type *)addr; 2227 break; 2228 2229 case FD_GOPTS: /* get drive options */ 2230 *(int *)addr = fd->options; 2231 break; 2232 2233 case FD_SOPTS: /* set drive options */ 2234 fd->options = *(int *)addr; 2235 break; 2236 2237 default: 2238 error = ENOTTY; 2239 break; 2240 } 2241 return (error); 2242 } 2243 2244 static device_method_t fdc_methods[] = { 2245 /* Device interface */ 2246 DEVMETHOD(device_probe, fdc_probe), 2247 DEVMETHOD(device_attach, fdc_attach), 2248 DEVMETHOD(device_detach, bus_generic_detach), 2249 DEVMETHOD(device_shutdown, bus_generic_shutdown), 2250 DEVMETHOD(device_suspend, bus_generic_suspend), 2251 DEVMETHOD(device_resume, bus_generic_resume), 2252 2253 /* Bus interface */ 2254 DEVMETHOD(bus_print_child, fdc_print_child), 2255 /* Our children never use any other bus interface methods. */ 2256 2257 { 0, 0 } 2258 }; 2259 2260 static driver_t fdc_driver = { 2261 "fdc", 2262 fdc_methods, 2263 sizeof(struct fdc_data) 2264 }; 2265 2266 DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0); 2267 2268 static device_method_t fd_methods[] = { 2269 /* Device interface */ 2270 DEVMETHOD(device_probe, fd_probe), 2271 DEVMETHOD(device_attach, fd_attach), 2272 DEVMETHOD(device_detach, bus_generic_detach), 2273 DEVMETHOD(device_shutdown, bus_generic_shutdown), 2274 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 2275 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 2276 2277 { 0, 0 } 2278 }; 2279 2280 static driver_t fd_driver = { 2281 "fd", 2282 fd_methods, 2283 sizeof(struct fd_data) 2284 }; 2285 2286 DEV_DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, fd_cdevsw, 0, 0); 2287 2288 #endif /* NFDC > 0 */ 2289 2290 /* 2291 * Hello emacs, these are the 2292 * Local Variables: 2293 * c-indent-level: 8 2294 * c-continued-statement-offset: 8 2295 * c-continued-brace-offset: 0 2296 * c-brace-offset: -8 2297 * c-brace-imaginary-offset: 0 2298 * c-argdecl-indent: 8 2299 * c-label-offset: -8 2300 * c++-hanging-braces: 1 2301 * c++-access-specifier-offset: -8 2302 * c++-empty-arglist-indent: 8 2303 * c++-friend-offset: 0 2304 * End: 2305 */ 2306