60#include <sys/buf.h> 61#include <sys/bus.h> 62#include <sys/conf.h> 63#include <sys/disklabel.h> 64#include <sys/devicestat.h> 65#include <sys/fcntl.h> 66#include <sys/malloc.h> 67#include <sys/module.h> 68#include <sys/proc.h> 69#include <sys/syslog.h> 70 71#include <sys/bus.h> 72#include <machine/bus.h> 73#include <sys/rman.h> 74 75#include <machine/clock.h> 76#include <machine/ioctl_fd.h> 77#include <machine/resource.h> 78#include <machine/stdarg.h> 79 80#include <isa/isavar.h> 81#include <isa/isareg.h> 82#include <isa/fdreg.h> 83#include <isa/fdc.h> 84#include <isa/rtc.h> 85 86/* misuse a flag to identify format operation */ 87 88/* configuration flags */ 89#define FDC_PRETEND_D0 (1 << 0) /* pretend drive 0 to be there */ 90#define FDC_NO_FIFO (1 << 2) /* do not enable FIFO */ 91 92/* internally used only, not really from CMOS: */ 93#define RTCFDT_144M_PRETENDED 0x1000 94 95/* error returns for fd_cmd() */ 96#define FD_FAILED -1 97#define FD_NOT_VALID -2 98#define FDC_ERRMAX 100 /* do not log more */ 99 100#define NUMTYPES 17 101#define NUMDENS (NUMTYPES - 7) 102 103/* These defines (-1) must match index for fd_types */ 104#define F_TAPE_TYPE 0x020 /* bit for fd_types to indicate tape */ 105#define NO_TYPE 0 /* must match NO_TYPE in ft.c */ 106#define FD_1720 1 107#define FD_1480 2 108#define FD_1440 3 109#define FD_1200 4 110#define FD_820 5 111#define FD_800 6 112#define FD_720 7 113#define FD_360 8 114#define FD_640 9 115#define FD_1232 10 116 117#define FD_1480in5_25 11 118#define FD_1440in5_25 12 119#define FD_820in5_25 13 120#define FD_800in5_25 14 121#define FD_720in5_25 15 122#define FD_360in5_25 16 123#define FD_640in5_25 17 124 125 126static struct fd_type fd_types[NUMTYPES] = 127{ 128{ 21,2,0xFF,0x04,82,3444,1,FDC_500KBPS,2,0x0C,2 }, /* 1.72M in HD 3.5in */ 129{ 18,2,0xFF,0x1B,82,2952,1,FDC_500KBPS,2,0x6C,1 }, /* 1.48M in HD 3.5in */ 130{ 18,2,0xFF,0x1B,80,2880,1,FDC_500KBPS,2,0x6C,1 }, /* 1.44M in HD 3.5in */ 131{ 15,2,0xFF,0x1B,80,2400,1,FDC_500KBPS,2,0x54,1 }, /* 1.2M in HD 5.25/3.5 */ 132{ 10,2,0xFF,0x10,82,1640,1,FDC_250KBPS,2,0x2E,1 }, /* 820K in HD 3.5in */ 133{ 10,2,0xFF,0x10,80,1600,1,FDC_250KBPS,2,0x2E,1 }, /* 800K in HD 3.5in */ 134{ 9,2,0xFF,0x20,80,1440,1,FDC_250KBPS,2,0x50,1 }, /* 720K in HD 3.5in */ 135{ 9,2,0xFF,0x2A,40, 720,1,FDC_250KBPS,2,0x50,1 }, /* 360K in DD 5.25in */ 136{ 8,2,0xFF,0x2A,80,1280,1,FDC_250KBPS,2,0x50,1 }, /* 640K in DD 5.25in */ 137{ 8,3,0xFF,0x35,77,1232,1,FDC_500KBPS,2,0x74,1 }, /* 1.23M in HD 5.25in */ 138 139{ 18,2,0xFF,0x02,82,2952,1,FDC_500KBPS,2,0x02,2 }, /* 1.48M in HD 5.25in */ 140{ 18,2,0xFF,0x02,80,2880,1,FDC_500KBPS,2,0x02,2 }, /* 1.44M in HD 5.25in */ 141{ 10,2,0xFF,0x10,82,1640,1,FDC_300KBPS,2,0x2E,1 }, /* 820K in HD 5.25in */ 142{ 10,2,0xFF,0x10,80,1600,1,FDC_300KBPS,2,0x2E,1 }, /* 800K in HD 5.25in */ 143{ 9,2,0xFF,0x20,80,1440,1,FDC_300KBPS,2,0x50,1 }, /* 720K in HD 5.25in */ 144{ 9,2,0xFF,0x23,40, 720,2,FDC_300KBPS,2,0x50,1 }, /* 360K in HD 5.25in */ 145{ 8,2,0xFF,0x2A,80,1280,1,FDC_300KBPS,2,0x50,1 }, /* 640K in HD 5.25in */ 146}; 147 148#define DRVS_PER_CTLR 2 /* 2 floppies */ 149 150/***********************************************************************\ 151* Per controller structure. * 152\***********************************************************************/ 153static devclass_t fdc_devclass; 154 155/***********************************************************************\ 156* Per drive structure. * 157* N per controller (DRVS_PER_CTLR) * 158\***********************************************************************/ 159struct fd_data { 160 struct fdc_data *fdc; /* pointer to controller structure */ 161 int fdsu; /* this units number on this controller */ 162 int type; /* Drive type (FD_1440...) */ 163 struct fd_type *ft; /* pointer to the type descriptor */ 164 int flags; 165#define FD_OPEN 0x01 /* it's open */ 166#define FD_ACTIVE 0x02 /* it's active */ 167#define FD_MOTOR 0x04 /* motor should be on */ 168#define FD_MOTOR_WAIT 0x08 /* motor coming up */ 169 int skip; 170 int hddrv; 171#define FD_NO_TRACK -2 172 int track; /* where we think the head is */ 173 int options; /* user configurable options, see ioctl_fd.h */ 174 struct callout_handle toffhandle; 175 struct callout_handle tohandle; 176 struct devstat device_stats; 177 device_t dev; 178 fdu_t fdu; 179}; 180 181struct fdc_ivars { 182 int fdunit; 183}; 184static devclass_t fd_devclass; 185 186/***********************************************************************\ 187* Throughout this file the following conventions will be used: * 188* fd is a pointer to the fd_data struct for the drive in question * 189* fdc is a pointer to the fdc_data struct for the controller * 190* fdu is the floppy drive unit number * 191* fdcu is the floppy controller unit number * 192* fdsu is the floppy drive unit number on that controller. (sub-unit) * 193\***********************************************************************/ 194 195/* needed for ft driver, thus exported */ 196int in_fdc(struct fdc_data *); 197int out_fdc(struct fdc_data *, int); 198 199/* internal functions */ 200static void fdc_intr(void *); 201static void set_motor(struct fdc_data *, int, int); 202# define TURNON 1 203# define TURNOFF 0 204static timeout_t fd_turnoff; 205static timeout_t fd_motor_on; 206static void fd_turnon(struct fd_data *); 207static void fdc_reset(fdc_p); 208static int fd_in(struct fdc_data *, int *); 209static void fdstart(struct fdc_data *); 210static timeout_t fd_iotimeout; 211static timeout_t fd_pseudointr; 212static int fdstate(struct fdc_data *); 213static int retrier(struct fdc_data *); 214static int fdformat(dev_t, struct fd_formb *, struct proc *); 215 216static int enable_fifo(fdc_p fdc); 217 218static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */ 219 220 221#define DEVIDLE 0 222#define FINDWORK 1 223#define DOSEEK 2 224#define SEEKCOMPLETE 3 225#define IOCOMPLETE 4 226#define RECALCOMPLETE 5 227#define STARTRECAL 6 228#define RESETCTLR 7 229#define SEEKWAIT 8 230#define RECALWAIT 9 231#define MOTORWAIT 10 232#define IOTIMEDOUT 11 233#define RESETCOMPLETE 12 234#define PIOREAD 13 235 236#ifdef FDC_DEBUG 237static char const * const fdstates[] = 238{ 239"DEVIDLE", 240"FINDWORK", 241"DOSEEK", 242"SEEKCOMPLETE", 243"IOCOMPLETE", 244"RECALCOMPLETE", 245"STARTRECAL", 246"RESETCTLR", 247"SEEKWAIT", 248"RECALWAIT", 249"MOTORWAIT", 250"IOTIMEDOUT", 251"RESETCOMPLETE", 252"PIOREAD", 253}; 254 255/* CAUTION: fd_debug causes huge amounts of logging output */ 256static int volatile fd_debug = 0; 257#define TRACE0(arg) if(fd_debug) printf(arg) 258#define TRACE1(arg1, arg2) if(fd_debug) printf(arg1, arg2) 259#else /* FDC_DEBUG */ 260#define TRACE0(arg) 261#define TRACE1(arg1, arg2) 262#endif /* FDC_DEBUG */ 263 264static void 265fdout_wr(fdc_p fdc, u_int8_t v) 266{ 267 bus_space_write_1(fdc->portt, fdc->porth, FDOUT+fdc->port_off, v); 268} 269 270static u_int8_t 271fdsts_rd(fdc_p fdc) 272{ 273 return bus_space_read_1(fdc->portt, fdc->porth, FDSTS+fdc->port_off); 274} 275 276static void 277fddata_wr(fdc_p fdc, u_int8_t v) 278{ 279 bus_space_write_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off, v); 280} 281 282static u_int8_t 283fddata_rd(fdc_p fdc) 284{ 285 return bus_space_read_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off); 286} 287 288static void 289fdctl_wr_isa(fdc_p fdc, u_int8_t v) 290{ 291 bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v); 292} 293 294static void 295fdctl_wr_pcmcia(fdc_p fdc, u_int8_t v) 296{ 297 bus_space_write_1(fdc->portt, fdc->porth, FDCTL+fdc->port_off, v); 298} 299 300#if 0 301 302static u_int8_t 303fdin_rd(fdc_p fdc) 304{ 305 return bus_space_read_1(fdc->portt, fdc->porth, FDIN); 306} 307 308#endif 309 310static d_open_t Fdopen; /* NOTE, not fdopen */ 311static d_close_t fdclose; 312static d_ioctl_t fdioctl; 313static d_strategy_t fdstrategy; 314 315#define CDEV_MAJOR 9 316#define BDEV_MAJOR 2 317 318static struct cdevsw fd_cdevsw = { 319 /* open */ Fdopen, 320 /* close */ fdclose, 321 /* read */ physread, 322 /* write */ physwrite, 323 /* ioctl */ fdioctl, 324 /* poll */ nopoll, 325 /* mmap */ nommap, 326 /* strategy */ fdstrategy, 327 /* name */ "fd", 328 /* maj */ CDEV_MAJOR, 329 /* dump */ nodump, 330 /* psize */ nopsize, 331 /* flags */ D_DISK, 332 /* bmaj */ BDEV_MAJOR 333}; 334 335static int 336fdc_err(struct fdc_data *fdc, const char *s) 337{ 338 fdc->fdc_errs++; 339 if (s) { 340 if (fdc->fdc_errs < FDC_ERRMAX) 341 device_printf(fdc->fdc_dev, "%s", s); 342 else if (fdc->fdc_errs == FDC_ERRMAX) 343 device_printf(fdc->fdc_dev, "too many errors, not " 344 "logging any more\n"); 345 } 346 347 return FD_FAILED; 348} 349 350/* 351 * fd_cmd: Send a command to the chip. Takes a varargs with this structure: 352 * Unit number, 353 * # of output bytes, output bytes as ints ..., 354 * # of input bytes, input bytes as ints ... 355 */ 356static int 357fd_cmd(struct fdc_data *fdc, int n_out, ...) 358{ 359 u_char cmd; 360 int n_in; 361 int n; 362 va_list ap; 363 364 va_start(ap, n_out); 365 cmd = (u_char)(va_arg(ap, int)); 366 va_end(ap); 367 va_start(ap, n_out); 368 for (n = 0; n < n_out; n++) 369 { 370 if (out_fdc(fdc, va_arg(ap, int)) < 0) 371 { 372 char msg[50]; 373 snprintf(msg, sizeof(msg), 374 "cmd %x failed at out byte %d of %d\n", 375 cmd, n + 1, n_out); 376 return fdc_err(fdc, msg); 377 } 378 } 379 n_in = va_arg(ap, int); 380 for (n = 0; n < n_in; n++) 381 { 382 int *ptr = va_arg(ap, int *); 383 if (fd_in(fdc, ptr) < 0) 384 { 385 char msg[50]; 386 snprintf(msg, sizeof(msg), 387 "cmd %02x failed at in byte %d of %d\n", 388 cmd, n + 1, n_in); 389 return fdc_err(fdc, msg); 390 } 391 } 392 393 return 0; 394} 395 396static int 397enable_fifo(fdc_p fdc) 398{ 399 int i, j; 400 401 if ((fdc->flags & FDC_HAS_FIFO) == 0) { 402 403 /* 404 * XXX: 405 * Cannot use fd_cmd the normal way here, since 406 * this might be an invalid command. Thus we send the 407 * first byte, and check for an early turn of data directon. 408 */ 409 410 if (out_fdc(fdc, I8207X_CONFIGURE) < 0) 411 return fdc_err(fdc, "Enable FIFO failed\n"); 412 413 /* If command is invalid, return */ 414 j = 100000; 415 while ((i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM)) 416 != NE7_RQM && j-- > 0) 417 if (i == (NE7_DIO | NE7_RQM)) { 418 fdc_reset(fdc); 419 return FD_FAILED; 420 } 421 if (j<0 || 422 fd_cmd(fdc, 3, 423 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) { 424 fdc_reset(fdc); 425 return fdc_err(fdc, "Enable FIFO failed\n"); 426 } 427 fdc->flags |= FDC_HAS_FIFO; 428 return 0; 429 } 430 if (fd_cmd(fdc, 4, 431 I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) 432 return fdc_err(fdc, "Re-enable FIFO failed\n"); 433 return 0; 434} 435 436static int 437fd_sense_drive_status(fdc_p fdc, int *st3p) 438{ 439 int st3; 440 441 if (fd_cmd(fdc, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3)) 442 { 443 return fdc_err(fdc, "Sense Drive Status failed\n"); 444 } 445 if (st3p) 446 *st3p = st3; 447 448 return 0; 449} 450 451static int 452fd_sense_int(fdc_p fdc, int *st0p, int *cylp) 453{ 454 int cyl, st0, ret; 455 456 ret = fd_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); 457 if (ret) { 458 (void)fdc_err(fdc, 459 "sense intr err reading stat reg 0\n"); 460 return ret; 461 } 462 463 if (st0p) 464 *st0p = st0; 465 466 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { 467 /* 468 * There doesn't seem to have been an interrupt. 469 */ 470 return FD_NOT_VALID; 471 } 472 473 if (fd_in(fdc, &cyl) < 0) { 474 return fdc_err(fdc, "can't get cyl num\n"); 475 } 476 477 if (cylp) 478 *cylp = cyl; 479 480 return 0; 481} 482 483 484static int 485fd_read_status(fdc_p fdc, int fdsu) 486{ 487 int i, ret; 488 489 for (i = 0; i < 7; i++) { 490 /* 491 * XXX types are poorly chosen. Only bytes can by read 492 * from the hardware, but fdc->status[] wants u_ints and 493 * fd_in() gives ints. 494 */ 495 int status; 496 497 ret = fd_in(fdc, &status); 498 fdc->status[i] = status; 499 if (ret != 0) 500 break; 501 } 502 503 if (ret == 0) 504 fdc->flags |= FDC_STAT_VALID; 505 else 506 fdc->flags &= ~FDC_STAT_VALID; 507 508 return ret; 509} 510 511/****************************************************************************/ 512/* autoconfiguration stuff */ 513/****************************************************************************/ 514 515static int 516fdc_alloc_resources(struct fdc_data *fdc) 517{ 518 device_t dev; 519 int ispnp, ispcmcia; 520 521 dev = fdc->fdc_dev; 522 ispnp = (fdc->flags & FDC_ISPNP) != 0; 523 ispcmcia = (fdc->flags & FDC_ISPCMCIA) != 0; 524 fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0; 525 fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0; 526 527 /* 528 * On standard ISA, we don't just use an 8 port range 529 * (e.g. 0x3f0-0x3f7) since that covers an IDE control 530 * register at 0x3f6. 531 * 532 * Isn't PC hardware wonderful. 533 * 534 * The Y-E Data PCMCIA FDC doesn't have this problem, it 535 * uses the register with offset 6 for pseudo-DMA, and the 536 * one with offset 7 as control register. 537 */ 538 fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT, 539 &fdc->rid_ioport, 0ul, ~0ul, 540 ispcmcia ? 8 : (ispnp ? 1 : 6), 541 RF_ACTIVE); 542 if (fdc->res_ioport == 0) { 543 device_printf(dev, "cannot reserve I/O port range\n"); 544 return ENXIO; 545 } 546 fdc->portt = rman_get_bustag(fdc->res_ioport); 547 fdc->porth = rman_get_bushandle(fdc->res_ioport); 548 549 if (!ispcmcia) { 550 /* 551 * Some BIOSen report the device at 0x3f2-0x3f5,0x3f7 552 * and some at 0x3f0-0x3f5,0x3f7. We detect the former 553 * by checking the size and adjust the port address 554 * accordingly. 555 */ 556 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 0) == 4) 557 fdc->port_off = -2; 558 559 /* 560 * Register the control port range as rid 1 if it 561 * isn't there already. Most PnP BIOSen will have 562 * already done this but non-PnP configurations don't. 563 * 564 * And some (!!) report 0x3f2-0x3f5 and completely 565 * leave out the control register! It seems that some 566 * non-antique controller chips have a different 567 * method of programming the transfer speed which 568 * doesn't require the control register, but it's 569 * mighty bogus as the chip still responds to the 570 * address for the control register. 571 */ 572 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 1) == 0) { 573 u_long ctlstart; 574 575 /* Find the control port, usually 0x3f7 */ 576 ctlstart = rman_get_start(fdc->res_ioport) + 577 fdc->port_off + 7; 578 579 bus_set_resource(dev, SYS_RES_IOPORT, 1, ctlstart, 1); 580 } 581 582 /* 583 * Now (finally!) allocate the control port. 584 */ 585 fdc->rid_ctl = 1; 586 fdc->res_ctl = bus_alloc_resource(dev, SYS_RES_IOPORT, 587 &fdc->rid_ctl, 588 0ul, ~0ul, 1, RF_ACTIVE); 589 if (fdc->res_ctl == 0) { 590 device_printf(dev, 591 "cannot reserve control I/O port range\n"); 592 return ENXIO; 593 } 594 fdc->ctlt = rman_get_bustag(fdc->res_ctl); 595 fdc->ctlh = rman_get_bushandle(fdc->res_ctl); 596 } 597 598 fdc->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ, 599 &fdc->rid_irq, 0ul, ~0ul, 1, 600 RF_ACTIVE); 601 if (fdc->res_irq == 0) { 602 device_printf(dev, "cannot reserve interrupt line\n"); 603 return ENXIO; 604 } 605 606 if ((fdc->flags & FDC_NODMA) == 0) { 607 fdc->res_drq = bus_alloc_resource(dev, SYS_RES_DRQ, 608 &fdc->rid_drq, 0ul, ~0ul, 1, 609 RF_ACTIVE); 610 if (fdc->res_drq == 0) { 611 device_printf(dev, "cannot reserve DMA request line\n"); 612 return ENXIO; 613 } 614 fdc->dmachan = fdc->res_drq->r_start; 615 } 616 617 return 0; 618} 619 620static void 621fdc_release_resources(struct fdc_data *fdc) 622{ 623 device_t dev; 624 625 dev = fdc->fdc_dev; 626 if (fdc->res_irq != 0) { 627 bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 628 fdc->res_irq); 629 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 630 fdc->res_irq); 631 } 632 if (fdc->res_ctl != 0) { 633 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 634 fdc->res_ctl); 635 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 636 fdc->res_ctl); 637 } 638 if (fdc->res_ioport != 0) { 639 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 640 fdc->res_ioport); 641 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 642 fdc->res_ioport); 643 } 644 if (fdc->res_drq != 0) { 645 bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 646 fdc->res_drq); 647 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 648 fdc->res_drq); 649 } 650} 651 652/****************************************************************************/ 653/* autoconfiguration stuff */ 654/****************************************************************************/ 655 656static struct isa_pnp_id fdc_ids[] = { 657 {0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */ 658 {0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */ 659 {0} 660}; 661 662static int 663fdc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 664{ 665 struct fdc_ivars *ivars = device_get_ivars(child); 666 667 switch (which) { 668 case FDC_IVAR_FDUNIT: 669 *result = ivars->fdunit; 670 break; 671 default: 672 return ENOENT; 673 } 674 return 0; 675} 676 677/* 678 * fdc controller section. 679 */ 680static int 681fdc_probe(device_t dev) 682{ 683 int error, ic_type; 684 struct fdc_data *fdc; 685 686 fdc = device_get_softc(dev); 687 bzero(fdc, sizeof *fdc); 688 fdc->fdc_dev = dev; 689 fdc->fdctl_wr = fdctl_wr_isa; 690 691 /* Check pnp ids */ 692 error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids); 693 if (error == ENXIO) 694 return ENXIO; 695 if (error == 0) 696 fdc->flags |= FDC_ISPNP; 697 698 /* Attempt to allocate our resources for the duration of the probe */ 699 error = fdc_alloc_resources(fdc); 700 if (error) 701 goto out; 702 703 /* First - lets reset the floppy controller */ 704 fdout_wr(fdc, 0); 705 DELAY(100); 706 fdout_wr(fdc, FDO_FRST); 707 708 /* see if it can handle a command */ 709 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 710 NE7_SPEC_2(2, 0), 0)) { 711 error = ENXIO; 712 goto out; 713 } 714 715 if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) { 716 ic_type = (u_char)ic_type; 717 switch (ic_type) { 718 case 0x80: 719 device_set_desc(dev, "NEC 765 or clone"); 720 fdc->fdct = FDC_NE765; 721 break; 722 case 0x81: 723 device_set_desc(dev, "Intel 82077 or clone"); 724 fdc->fdct = FDC_I82077; 725 break; 726 case 0x90: 727 device_set_desc(dev, "NEC 72065B or clone"); 728 fdc->fdct = FDC_NE72065; 729 break; 730 default: 731 device_set_desc(dev, "generic floppy controller"); 732 fdc->fdct = FDC_UNKNOWN; 733 break; 734 } 735 } 736 737out: 738 fdc_release_resources(fdc); 739 return (error); 740} 741 742#if NCARD > 0 743 744static int 745fdc_pccard_probe(device_t dev) 746{ 747 int error; 748 struct fdc_data *fdc; 749 750 fdc = device_get_softc(dev); 751 bzero(fdc, sizeof *fdc); 752 fdc->fdc_dev = dev; 753 fdc->fdctl_wr = fdctl_wr_pcmcia; 754 755 fdc->flags |= FDC_ISPCMCIA | FDC_NODMA; 756 757 /* Attempt to allocate our resources for the duration of the probe */ 758 error = fdc_alloc_resources(fdc); 759 if (error) 760 goto out; 761 762 /* First - lets reset the floppy controller */ 763 fdout_wr(fdc, 0); 764 DELAY(100); 765 fdout_wr(fdc, FDO_FRST); 766 767 /* see if it can handle a command */ 768 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 769 NE7_SPEC_2(2, 0), 0)) { 770 error = ENXIO; 771 goto out; 772 } 773 774 device_set_desc(dev, "Y-E Data PCMCIA floppy"); 775 fdc->fdct = FDC_NE765; 776 777out: 778 fdc_release_resources(fdc); 779 return (error); 780} 781 782static int 783fdc_pccard_detach(device_t dev) 784{ 785 struct fdc_data *fdc; 786 int error; 787 788 fdc = device_get_softc(dev); 789 790 /* have our children detached first */ 791 if ((error = bus_generic_detach(dev))) 792 return (error); 793 794 if ((fdc->flags & FDC_ATTACHED) == 0) { 795 device_printf(dev, "already unloaded\n"); 796 return (0); 797 } 798 fdc->flags &= ~FDC_ATTACHED; 799 800 BUS_TEARDOWN_INTR(device_get_parent(dev), dev, fdc->res_irq, 801 fdc->fdc_intr); 802 fdc_release_resources(fdc); 803 device_printf(dev, "unload\n"); 804 return (0); 805} 806 807#endif /* NCARD > 0 */ 808 809/* 810 * Add a child device to the fdc controller. It will then be probed etc. 811 */ 812static void 813fdc_add_child(device_t dev, const char *name, int unit) 814{ 815 int disabled; 816 struct fdc_ivars *ivar; 817 device_t child; 818 819 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT); 820 if (ivar == NULL) 821 return; 822 bzero(ivar, sizeof *ivar); 823 if (resource_int_value(name, unit, "drive", &ivar->fdunit) != 0) 824 ivar->fdunit = 0; 825 child = device_add_child(dev, name, unit); 826 if (child == NULL) 827 return; 828 device_set_ivars(child, ivar); 829 if (resource_int_value(name, unit, "disabled", &disabled) == 0 830 && disabled != 0) 831 device_disable(child); 832} 833 834static int 835fdc_attach(device_t dev) 836{ 837 struct fdc_data *fdc; 838 int i, error; 839 840 fdc = device_get_softc(dev); 841 error = fdc_alloc_resources(fdc); 842 if (error) { 843 device_printf(dev, "cannot re-aquire resources\n"); 844 return error; 845 } 846 error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq, 847 INTR_TYPE_BIO, fdc_intr, fdc, &fdc->fdc_intr); 848 if (error) { 849 device_printf(dev, "cannot setup interrupt\n"); 850 return error; 851 } 852 fdc->fdcu = device_get_unit(dev); 853 fdc->flags |= FDC_ATTACHED; 854 855 if ((fdc->flags & FDC_NODMA) == 0) { 856 /* Acquire the DMA channel forever, The driver will do the rest */ 857 /* XXX should integrate with rman */ 858 isa_dma_acquire(fdc->dmachan); 859 isa_dmainit(fdc->dmachan, 128 << 3 /* XXX max secsize */); 860 } 861 fdc->state = DEVIDLE; 862 863 /* reset controller, turn motor off, clear fdout mirror reg */ 864 fdout_wr(fdc, ((fdc->fdout = 0))); 865 bioq_init(&fdc->head); 866 867 /* 868 * Probe and attach any children. We should probably detect 869 * devices from the BIOS unless overridden. 870 */ 871 for (i = resource_query_string(-1, "at", device_get_nameunit(dev)); 872 i != -1; 873 i = resource_query_string(i, "at", device_get_nameunit(dev))) 874 fdc_add_child(dev, resource_query_name(i), 875 resource_query_unit(i)); 876 877 return (bus_generic_attach(dev)); 878} 879 880static int 881fdc_print_child(device_t me, device_t child) 882{ 883 int retval = 0; 884 885 retval += bus_print_child_header(me, child); 886 retval += printf(" on %s drive %d\n", device_get_nameunit(me), 887 fdc_get_fdunit(child)); 888 889 return (retval); 890} 891 892static device_method_t fdc_methods[] = { 893 /* Device interface */ 894 DEVMETHOD(device_probe, fdc_probe), 895 DEVMETHOD(device_attach, fdc_attach), 896 DEVMETHOD(device_detach, bus_generic_detach), 897 DEVMETHOD(device_shutdown, bus_generic_shutdown), 898 DEVMETHOD(device_suspend, bus_generic_suspend), 899 DEVMETHOD(device_resume, bus_generic_resume), 900 901 /* Bus interface */ 902 DEVMETHOD(bus_print_child, fdc_print_child), 903 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 904 /* Our children never use any other bus interface methods. */ 905 906 { 0, 0 } 907}; 908 909static driver_t fdc_driver = { 910 "fdc", 911 fdc_methods, 912 sizeof(struct fdc_data) 913}; 914 915DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0); 916 917#if NCARD > 0 918 919static device_method_t fdc_pccard_methods[] = { 920 /* Device interface */ 921 DEVMETHOD(device_probe, fdc_pccard_probe), 922 DEVMETHOD(device_attach, fdc_attach), 923 DEVMETHOD(device_detach, fdc_pccard_detach), 924 DEVMETHOD(device_shutdown, bus_generic_shutdown), 925 DEVMETHOD(device_suspend, bus_generic_suspend), 926 DEVMETHOD(device_resume, bus_generic_resume), 927 928 /* Bus interface */ 929 DEVMETHOD(bus_print_child, fdc_print_child), 930 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 931 /* Our children never use any other bus interface methods. */ 932 933 { 0, 0 } 934}; 935 936static driver_t fdc_pccard_driver = { 937 "fdc", 938 fdc_pccard_methods, 939 sizeof(struct fdc_data) 940}; 941 942DRIVER_MODULE(fdc, pccard, fdc_pccard_driver, fdc_devclass, 0, 0); 943 944#endif /* NCARD > 0 */ 945 946/******************************************************************/ 947/* 948 * devices attached to the controller section. 949 */ 950static int 951fd_probe(device_t dev) 952{ 953 int i; 954 u_int fdt, st0, st3; 955 struct fd_data *fd; 956 struct fdc_data *fdc; 957 fdsu_t fdsu; 958 static int fd_fifo = 0; 959 960 fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */ 961 fd = device_get_softc(dev); 962 fdc = device_get_softc(device_get_parent(dev)); 963 964 bzero(fd, sizeof *fd); 965 fd->dev = dev; 966 fd->fdc = fdc; 967 fd->fdsu = fdsu; 968 fd->fdu = device_get_unit(dev); 969 970#ifdef __i386__ 971 /* look up what bios thinks we have */ 972 switch (fd->fdu) { 973 case 0: 974 if ((fdc->flags & FDC_ISPCMCIA)) 975 fdt = RTCFDT_144M; 976 else if (device_get_flags(fdc->fdc_dev) & FDC_PRETEND_D0) 977 fdt = RTCFDT_144M | RTCFDT_144M_PRETENDED; 978 else 979 fdt = (rtcin(RTC_FDISKETTE) & 0xf0); 980 break; 981 case 1: 982 fdt = ((rtcin(RTC_FDISKETTE) << 4) & 0xf0); 983 break; 984 default: 985 fdt = RTCFDT_NONE; 986 break; 987 } 988#else 989 fdt = RTCFDT_144M; /* XXX probably */ 990#endif 991 992 /* is there a unit? */ 993 if (fdt == RTCFDT_NONE) 994 return (ENXIO); 995 996 /* select it */ 997 set_motor(fdc, fdsu, TURNON); 998 DELAY(1000000); /* 1 sec */ 999 1000 /* XXX This doesn't work before the first set_motor() */ 1001 if (fd_fifo == 0 && fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN 1002 && (device_get_flags(fdc->fdc_dev) & FDC_NO_FIFO) == 0 1003 && enable_fifo(fdc) == 0) { 1004 device_printf(device_get_parent(dev), 1005 "FIFO enabled, %d bytes threshold\n", fifo_threshold); 1006 } 1007 fd_fifo = 1; 1008 1009 if ((fd_cmd(fdc, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) 1010 && (st3 & NE7_ST3_T0)) { 1011 /* if at track 0, first seek inwards */ 1012 /* seek some steps: */ 1013 fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0); 1014 DELAY(300000); /* ...wait a moment... */ 1015 fd_sense_int(fdc, 0, 0); /* make ctrlr happy */ 1016 } 1017 1018 /* If we're at track 0 first seek inwards. */ 1019 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) { 1020 /* Seek some steps... */ 1021 if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 1022 /* ...wait a moment... */ 1023 DELAY(300000); 1024 /* make ctrlr happy: */ 1025 fd_sense_int(fdc, 0, 0); 1026 } 1027 } 1028 1029 for (i = 0; i < 2; i++) { 1030 /* 1031 * we must recalibrate twice, just in case the 1032 * heads have been beyond cylinder 76, since most 1033 * FDCs still barf when attempting to recalibrate 1034 * more than 77 steps 1035 */ 1036 /* go back to 0: */ 1037 if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1038 /* a second being enough for full stroke seek*/ 1039 DELAY(i == 0 ? 1000000 : 300000); 1040 1041 /* anything responding? */ 1042 if (fd_sense_int(fdc, &st0, 0) == 0 && 1043 (st0 & NE7_ST0_EC) == 0) 1044 break; /* already probed succesfully */ 1045 } 1046 } 1047 1048 set_motor(fdc, fdsu, TURNOFF); 1049 1050 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */ 1051 return (ENXIO); 1052 1053 fd->track = FD_NO_TRACK; 1054 fd->fdc = fdc; 1055 fd->fdsu = fdsu; 1056 fd->options = 0; 1057 callout_handle_init(&fd->toffhandle); 1058 callout_handle_init(&fd->tohandle); 1059 1060 switch (fdt) { 1061 case RTCFDT_12M: 1062 device_set_desc(dev, "1200-KB 5.25\" drive"); 1063 fd->type = FD_1200; 1064 break; 1065 case RTCFDT_144M | RTCFDT_144M_PRETENDED: 1066 device_set_desc(dev, "config-pretended 1440-MB 3.5\" drive"); 1067 fdt = RTCFDT_144M; 1068 fd->type = FD_1440; 1069 case RTCFDT_144M: 1070 device_set_desc(dev, "1440-KB 3.5\" drive"); 1071 fd->type = FD_1440; 1072 break; 1073 case RTCFDT_288M: 1074 case RTCFDT_288M_1: 1075 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 1076 fd->type = FD_1440; 1077 break; 1078 case RTCFDT_360K: 1079 device_set_desc(dev, "360-KB 5.25\" drive"); 1080 fd->type = FD_360; 1081 break; 1082 case RTCFDT_720K: 1083 printf("720-KB 3.5\" drive"); 1084 fd->type = FD_720; 1085 break; 1086 default: 1087 return (ENXIO); 1088 } 1089 return (0); 1090} 1091 1092static int 1093fd_attach(device_t dev) 1094{ 1095 struct fd_data *fd; 1096#if 0 1097 int i; 1098 int mynor; 1099 int typemynor; 1100 int typesize; 1101#endif 1102 1103 fd = device_get_softc(dev); 1104 1105 cdevsw_add(&fd_cdevsw); /* XXX */ 1106 make_dev(&fd_cdevsw, (fd->fdu << 6), 1107 UID_ROOT, GID_OPERATOR, 0640, "rfd%d", fd->fdu); 1108 1109#if 0 1110 /* Other make_dev() go here. */ 1111#endif 1112 1113 /* 1114 * Export the drive to the devstat interface. 1115 */ 1116 devstat_add_entry(&fd->device_stats, device_get_name(dev), 1117 device_get_unit(dev), 512, DEVSTAT_NO_ORDERED_TAGS, 1118 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER, 1119 DEVSTAT_PRIORITY_FD); 1120 return (0); 1121} 1122 1123static int 1124fd_detach(device_t dev) 1125{ 1126 struct fd_data *fd; 1127 1128 fd = device_get_softc(dev); 1129 untimeout(fd_turnoff, fd, fd->toffhandle); 1130 1131 return (0); 1132} 1133 1134static device_method_t fd_methods[] = { 1135 /* Device interface */ 1136 DEVMETHOD(device_probe, fd_probe), 1137 DEVMETHOD(device_attach, fd_attach), 1138 DEVMETHOD(device_detach, fd_detach), 1139 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1140 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 1141 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 1142 1143 { 0, 0 } 1144}; 1145 1146static driver_t fd_driver = { 1147 "fd", 1148 fd_methods, 1149 sizeof(struct fd_data) 1150}; 1151 1152DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, 0, 0); 1153 1154/****************************************************************************/ 1155/* motor control stuff */ 1156/* remember to not deselect the drive we're working on */ 1157/****************************************************************************/ 1158static void 1159set_motor(struct fdc_data *fdc, int fdsu, int turnon) 1160{ 1161 int fdout = fdc->fdout; 1162 int needspecify = 0; 1163 1164 if(turnon) { 1165 fdout &= ~FDO_FDSEL; 1166 fdout |= (FDO_MOEN0 << fdsu) + fdsu; 1167 } else 1168 fdout &= ~(FDO_MOEN0 << fdsu); 1169 1170 if(!turnon 1171 && (fdout & (FDO_MOEN0+FDO_MOEN1+FDO_MOEN2+FDO_MOEN3)) == 0) 1172 /* gonna turn off the last drive, put FDC to bed */ 1173 fdout &= ~ (FDO_FRST|FDO_FDMAEN); 1174 else { 1175 /* make sure controller is selected and specified */ 1176 if((fdout & (FDO_FRST|FDO_FDMAEN)) == 0) 1177 needspecify = 1; 1178 fdout |= (FDO_FRST|FDO_FDMAEN); 1179 } 1180 1181 fdout_wr(fdc, fdout); 1182 fdc->fdout = fdout; 1183 TRACE1("[0x%x->FDOUT]", fdout); 1184 1185 if (needspecify) { 1186 /* 1187 * XXX 1188 * special case: since we have just woken up the FDC 1189 * from its sleep, we silently assume the command will 1190 * be accepted, and do not test for a timeout 1191 */ 1192 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1193 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1194 0); 1195 if (fdc->flags & FDC_HAS_FIFO) 1196 (void) enable_fifo(fdc); 1197 } 1198} 1199 1200static void 1201fd_turnoff(void *xfd) 1202{ 1203 int s; 1204 fd_p fd = xfd; 1205 1206 TRACE1("[fd%d: turnoff]", fd->fdu); 1207 1208 s = splbio(); 1209 /* 1210 * Don't turn off the motor yet if the drive is active. 1211 * 1212 * If we got here, this could only mean we missed an interrupt. 1213 * This can e. g. happen on the Y-E Date PCMCIA floppy controller 1214 * after a controller reset. Just schedule a pseudo-interrupt 1215 * so the state machine gets re-entered. 1216 */ 1217 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) { 1218 fdc_intr(fd->fdc); 1219 splx(s); 1220 return; 1221 } 1222 1223 fd->flags &= ~FD_MOTOR; 1224 set_motor(fd->fdc, fd->fdsu, TURNOFF); 1225 splx(s); 1226} 1227 1228static void 1229fd_motor_on(void *xfd) 1230{ 1231 int s; 1232 fd_p fd = xfd; 1233 1234 s = splbio(); 1235 fd->flags &= ~FD_MOTOR_WAIT; 1236 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT)) 1237 { 1238 fdc_intr(fd->fdc); 1239 } 1240 splx(s); 1241} 1242 1243static void 1244fd_turnon(fd_p fd) 1245{ 1246 if(!(fd->flags & FD_MOTOR)) 1247 { 1248 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT); 1249 set_motor(fd->fdc, fd->fdsu, TURNON); 1250 timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */ 1251 } 1252} 1253 1254static void 1255fdc_reset(fdc_p fdc) 1256{ 1257 /* Try a reset, keep motor on */ 1258 fdout_wr(fdc, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1259 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1260 DELAY(100); 1261 /* enable FDC, but defer interrupts a moment */ 1262 fdout_wr(fdc, fdc->fdout & ~FDO_FDMAEN); 1263 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN); 1264 DELAY(100); 1265 fdout_wr(fdc, fdc->fdout); 1266 TRACE1("[0x%x->FDOUT]", fdc->fdout); 1267 1268 /* XXX after a reset, silently believe the FDC will accept commands */ 1269 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1270 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1271 0); 1272 if (fdc->flags & FDC_HAS_FIFO) 1273 (void) enable_fifo(fdc); 1274} 1275 1276/****************************************************************************/ 1277/* fdc in/out */ 1278/****************************************************************************/ 1279int 1280in_fdc(struct fdc_data *fdc) 1281{ 1282 int i, j = 100000; 1283 while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) 1284 != (NE7_DIO|NE7_RQM) && j-- > 0) 1285 if (i == NE7_RQM) 1286 return fdc_err(fdc, "ready for output in input\n"); 1287 if (j <= 0) 1288 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1289#ifdef FDC_DEBUG 1290 i = fddata_rd(fdc); 1291 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1292 return(i); 1293#else /* !FDC_DEBUG */ 1294 return fddata_rd(fdc); 1295#endif /* FDC_DEBUG */ 1296} 1297 1298/* 1299 * fd_in: Like in_fdc, but allows you to see if it worked. 1300 */ 1301static int 1302fd_in(struct fdc_data *fdc, int *ptr) 1303{ 1304 int i, j = 100000; 1305 while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) 1306 != (NE7_DIO|NE7_RQM) && j-- > 0) 1307 if (i == NE7_RQM) 1308 return fdc_err(fdc, "ready for output in input\n"); 1309 if (j <= 0) 1310 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1311#ifdef FDC_DEBUG 1312 i = fddata_rd(fdc); 1313 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1314 *ptr = i; 1315 return 0; 1316#else /* !FDC_DEBUG */ 1317 i = fddata_rd(fdc); 1318 if (ptr) 1319 *ptr = i; 1320 return 0; 1321#endif /* FDC_DEBUG */ 1322} 1323 1324int 1325out_fdc(struct fdc_data *fdc, int x) 1326{ 1327 int i; 1328 1329 /* Check that the direction bit is set */ 1330 i = 100000; 1331 while ((fdsts_rd(fdc) & NE7_DIO) && i-- > 0); 1332 if (i <= 0) return fdc_err(fdc, "direction bit not set\n"); 1333 1334 /* Check that the floppy controller is ready for a command */ 1335 i = 100000; 1336 while ((fdsts_rd(fdc) & NE7_RQM) == 0 && i-- > 0); 1337 if (i <= 0) 1338 return fdc_err(fdc, bootverbose? "output ready timeout\n": 0); 1339 1340 /* Send the command and return */ 1341 fddata_wr(fdc, x); 1342 TRACE1("[0x%x->FDDATA]", x); 1343 return (0); 1344} 1345 1346/****************************************************************************/ 1347/* fdopen/fdclose */ 1348/****************************************************************************/ 1349int 1350Fdopen(dev_t dev, int flags, int mode, struct proc *p) 1351{ 1352 fdu_t fdu = FDUNIT(minor(dev)); 1353 int type = FDTYPE(minor(dev)); 1354 fd_p fd; 1355 fdc_p fdc; 1356 1357 /* check bounds */ 1358 if ((fd = devclass_get_softc(fd_devclass, fdu)) == 0) 1359 return (ENXIO); 1360 fdc = fd->fdc; 1361 if ((fdc == NULL) || (fd->type == NO_TYPE)) 1362 return (ENXIO); 1363 if (type > NUMDENS) 1364 return (ENXIO); 1365 if (type == 0) 1366 type = fd->type; 1367 else { 1368 /* 1369 * For each type of basic drive, make sure we are trying 1370 * to open a type it can do, 1371 */ 1372 if (type != fd->type) { 1373 switch (fd->type) { 1374 case FD_360: 1375 return (ENXIO); 1376 case FD_720: 1377 if ( type != FD_820 1378 && type != FD_800 1379 && type != FD_640 1380 ) 1381 return (ENXIO); 1382 break; 1383 case FD_1200: 1384 switch (type) { 1385 case FD_1480: 1386 type = FD_1480in5_25; 1387 break; 1388 case FD_1440: 1389 type = FD_1440in5_25; 1390 break; 1391 case FD_1232: 1392 break; 1393 case FD_820: 1394 type = FD_820in5_25; 1395 break; 1396 case FD_800: 1397 type = FD_800in5_25; 1398 break; 1399 case FD_720: 1400 type = FD_720in5_25; 1401 break; 1402 case FD_640: 1403 type = FD_640in5_25; 1404 break; 1405 case FD_360: 1406 type = FD_360in5_25; 1407 break; 1408 default: 1409 return(ENXIO); 1410 } 1411 break; 1412 case FD_1440: 1413 if ( type != FD_1720 1414 && type != FD_1480 1415 && type != FD_1200 1416 && type != FD_820 1417 && type != FD_800 1418 && type != FD_720 1419 && type != FD_640 1420 ) 1421 return(ENXIO); 1422 break; 1423 } 1424 } 1425 } 1426 fd->ft = fd_types + type - 1; 1427 fd->flags |= FD_OPEN; 1428 1429 return 0; 1430} 1431 1432int 1433fdclose(dev_t dev, int flags, int mode, struct proc *p) 1434{ 1435 fdu_t fdu = FDUNIT(minor(dev)); 1436 struct fd_data *fd; 1437 1438 fd = devclass_get_softc(fd_devclass, fdu); 1439 fd->flags &= ~FD_OPEN; 1440 fd->options &= ~FDOPT_NORETRY; 1441 1442 return (0); 1443} 1444 1445/****************************************************************************/ 1446/* fdstrategy */ 1447/****************************************************************************/ 1448void 1449fdstrategy(struct bio *bp) 1450{ 1451 unsigned nblocks, blknum, cando; 1452 int s; 1453 fdu_t fdu; 1454 fdc_p fdc; 1455 fd_p fd; 1456 size_t fdblk; 1457 1458 fdu = FDUNIT(minor(bp->bio_dev)); 1459 fd = devclass_get_softc(fd_devclass, fdu); 1460 if (fd == 0) 1461 panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)", 1462 (u_long)major(bp->bio_dev), (u_long)minor(bp->bio_dev)); 1463 fdc = fd->fdc; 1464 if (fd->type == NO_TYPE) { 1465 bp->bio_error = ENXIO; 1466 bp->bio_flags |= BIO_ERROR; 1467 goto bad; 1468 }; 1469 1470 fdblk = 128 << (fd->ft->secsize); 1471 if (!(bp->bio_cmd & BIO_FORMAT)) { 1472 if (bp->bio_blkno < 0) { 1473 printf( 1474 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n", 1475 fdu, (u_long)bp->bio_blkno, bp->bio_bcount); 1476 bp->bio_error = EINVAL; 1477 bp->bio_flags |= BIO_ERROR; 1478 goto bad; 1479 } 1480 if ((bp->bio_bcount % fdblk) != 0) { 1481 bp->bio_error = EINVAL; 1482 bp->bio_flags |= BIO_ERROR; 1483 goto bad; 1484 } 1485 } 1486 1487 /* 1488 * Set up block calculations. 1489 */ 1490 if (bp->bio_blkno > 20000000) { 1491 /* 1492 * Reject unreasonably high block number, prevent the 1493 * multiplication below from overflowing. 1494 */ 1495 bp->bio_error = EINVAL; 1496 bp->bio_flags |= BIO_ERROR; 1497 goto bad; 1498 } 1499 blknum = (unsigned) bp->bio_blkno * DEV_BSIZE/fdblk; 1500 nblocks = fd->ft->size; 1501 bp->bio_resid = 0; 1502 if (blknum + (bp->bio_bcount / fdblk) > nblocks) { 1503 if (blknum <= nblocks) { 1504 cando = (nblocks - blknum) * fdblk; 1505 bp->bio_resid = bp->bio_bcount - cando; 1506 if (cando == 0) 1507 goto bad; /* not actually bad but EOF */ 1508 } else { 1509 bp->bio_error = EINVAL; 1510 bp->bio_flags |= BIO_ERROR; 1511 goto bad; 1512 } 1513 } 1514 bp->bio_pblkno = bp->bio_blkno; 1515 s = splbio(); 1516 bioqdisksort(&fdc->head, bp); 1517 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */ 1518 1519 /* Tell devstat we are starting on the transaction */ 1520 devstat_start_transaction(&fd->device_stats); 1521 device_busy(fd->dev); 1522 1523 fdstart(fdc); 1524 splx(s); 1525 return; 1526 1527bad: 1528 biodone(bp); 1529} 1530 1531/***************************************************************\ 1532* fdstart * 1533* We have just queued something.. if the controller is not busy * 1534* then simulate the case where it has just finished a command * 1535* So that it (the interrupt routine) looks on the queue for more* 1536* work to do and picks up what we just added. * 1537* If the controller is already busy, we need do nothing, as it * 1538* will pick up our work when the present work completes * 1539\***************************************************************/ 1540static void 1541fdstart(struct fdc_data *fdc) 1542{ 1543 int s; 1544 1545 s = splbio(); 1546 if(fdc->state == DEVIDLE) 1547 { 1548 fdc_intr(fdc); 1549 } 1550 splx(s); 1551} 1552 1553static void 1554fd_iotimeout(void *xfdc) 1555{ 1556 fdc_p fdc; 1557 int s; 1558 1559 fdc = xfdc; 1560 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); 1561 1562 /* 1563 * Due to IBM's brain-dead design, the FDC has a faked ready 1564 * signal, hardwired to ready == true. Thus, any command 1565 * issued if there's no diskette in the drive will _never_ 1566 * complete, and must be aborted by resetting the FDC. 1567 * Many thanks, Big Blue! 1568 * The FDC must not be reset directly, since that would 1569 * interfere with the state machine. Instead, pretend that 1570 * the command completed but was invalid. The state machine 1571 * will reset the FDC and retry once. 1572 */ 1573 s = splbio(); 1574 fdc->status[0] = NE7_ST0_IC_IV; 1575 fdc->flags &= ~FDC_STAT_VALID; 1576 fdc->state = IOTIMEDOUT; 1577 fdc_intr(fdc); 1578 splx(s); 1579} 1580 1581/* just ensure it has the right spl */ 1582static void 1583fd_pseudointr(void *xfdc) 1584{ 1585 int s; 1586 1587 s = splbio(); 1588 fdc_intr(xfdc); 1589 splx(s); 1590} 1591 1592/***********************************************************************\ 1593* fdintr * 1594* keep calling the state machine until it returns a 0 * 1595* ALWAYS called at SPLBIO * 1596\***********************************************************************/ 1597static void 1598fdc_intr(void *xfdc) 1599{ 1600 fdc_p fdc = xfdc; 1601 while(fdstate(fdc)) 1602 ; 1603} 1604 1605/* 1606 * magic pseudo-DMA initialization for YE FDC. Sets count and 1607 * direction 1608 */ 1609#define SET_BCDR(fdc,wr,cnt,port) \ 1610 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port, \ 1611 ((cnt)-1) & 0xff); \ 1612 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port + 1, \ 1613 ((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))); 1614 1615/* 1616 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy 1617 */ 1618static int fdcpio(fdc_p fdc, long flags, caddr_t addr, u_int count) 1619{ 1620 u_char *cptr = (u_char *)addr; 1621 1622 if (flags == BIO_READ) { 1623 if (fdc->state != PIOREAD) { 1624 fdc->state = PIOREAD; 1625 return(0); 1626 }; 1627 SET_BCDR(fdc, 0, count, 0); 1628 bus_space_read_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1629 FDC_YE_DATAPORT, cptr, count); 1630 } else { 1631 bus_space_write_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1632 FDC_YE_DATAPORT, cptr, count); 1633 SET_BCDR(fdc, 0, count, 0); 1634 }; 1635 return(1); 1636} 1637 1638/***********************************************************************\ 1639* The controller state machine. * 1640* if it returns a non zero value, it should be called again immediatly * 1641\***********************************************************************/ 1642static int 1643fdstate(fdc_p fdc) 1644{ 1645 int read, format, head, i, sec = 0, sectrac, st0, cyl, st3, idf; 1646 unsigned blknum = 0, b_cylinder = 0; 1647 fdu_t fdu = fdc->fdu; 1648 fd_p fd; 1649 register struct bio *bp; 1650 struct fd_formb *finfo = NULL; 1651 size_t fdblk; 1652 1653 bp = fdc->bp; 1654 if (bp == NULL) { 1655 bp = bioq_first(&fdc->head); 1656 if (bp != NULL) { 1657 bioq_remove(&fdc->head, bp); 1658 fdc->bp = bp; 1659 } 1660 } 1661 if (bp == NULL) { 1662 /***********************************************\ 1663 * nothing left for this controller to do * 1664 * Force into the IDLE state, * 1665 \***********************************************/ 1666 fdc->state = DEVIDLE; 1667 if (fdc->fd) { 1668 device_printf(fdc->fdc_dev, 1669 "unexpected valid fd pointer\n"); 1670 fdc->fd = (fd_p) 0; 1671 fdc->fdu = -1; 1672 } 1673 TRACE1("[fdc%d IDLE]", fdc->fdcu); 1674 return (0); 1675 } 1676 fdu = FDUNIT(minor(bp->bio_dev)); 1677 fd = devclass_get_softc(fd_devclass, fdu); 1678 fdblk = 128 << fd->ft->secsize; 1679 if (fdc->fd && (fd != fdc->fd)) 1680 device_printf(fd->dev, "confused fd pointers\n"); 1681 read = bp->bio_cmd == BIO_READ; 1682 if (read) 1683 idf = ISADMA_READ; 1684 else 1685 idf = ISADMA_WRITE; 1686 format = bp->bio_cmd & BIO_FORMAT; 1687 if (format) { 1688 finfo = (struct fd_formb *)bp->bio_data; 1689 fd->skip = (char *)&(finfo->fd_formb_cylno(0)) 1690 - (char *)finfo; 1691 } 1692 if (fdc->state == DOSEEK || fdc->state == SEEKCOMPLETE) { 1693 blknum = (unsigned) bp->bio_pblkno * DEV_BSIZE/fdblk + 1694 fd->skip/fdblk; 1695 b_cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 1696 } 1697 TRACE1("fd%d", fdu); 1698 TRACE1("[%s]", fdstates[fdc->state]); 1699 TRACE1("(0x%x)", fd->flags); 1700 untimeout(fd_turnoff, fd, fd->toffhandle); 1701 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 1702 switch (fdc->state) 1703 { 1704 case DEVIDLE: 1705 case FINDWORK: /* we have found new work */ 1706 fdc->retry = 0; 1707 fd->skip = 0; 1708 fdc->fd = fd; 1709 fdc->fdu = fdu; 1710 fdc->fdctl_wr(fdc, fd->ft->trans); 1711 TRACE1("[0x%x->FDCTL]", fd->ft->trans); 1712 /*******************************************************\ 1713 * If the next drive has a motor startup pending, then * 1714 * it will start up in its own good time * 1715 \*******************************************************/ 1716 if(fd->flags & FD_MOTOR_WAIT) { 1717 fdc->state = MOTORWAIT; 1718 return (0); /* come back later */ 1719 } 1720 /*******************************************************\ 1721 * Maybe if it's not starting, it SHOULD be starting * 1722 \*******************************************************/ 1723 if (!(fd->flags & FD_MOTOR)) 1724 { 1725 fdc->state = MOTORWAIT; 1726 fd_turnon(fd); 1727 return (0); 1728 } 1729 else /* at least make sure we are selected */ 1730 { 1731 set_motor(fdc, fd->fdsu, TURNON); 1732 } 1733 if (fdc->flags & FDC_NEEDS_RESET) { 1734 fdc->state = RESETCTLR; 1735 fdc->flags &= ~FDC_NEEDS_RESET; 1736 } else 1737 fdc->state = DOSEEK; 1738 break; 1739 case DOSEEK: 1740 if (b_cylinder == (unsigned)fd->track) 1741 { 1742 fdc->state = SEEKCOMPLETE; 1743 break; 1744 } 1745 if (fd_cmd(fdc, 3, NE7CMD_SEEK, 1746 fd->fdsu, b_cylinder * fd->ft->steptrac, 1747 0)) 1748 { 1749 /* 1750 * seek command not accepted, looks like 1751 * the FDC went off to the Saints... 1752 */ 1753 fdc->retry = 6; /* try a reset */ 1754 return(retrier(fdc)); 1755 } 1756 fd->track = FD_NO_TRACK; 1757 fdc->state = SEEKWAIT; 1758 return(0); /* will return later */ 1759 case SEEKWAIT: 1760 /* allow heads to settle */ 1761 timeout(fd_pseudointr, fdc, hz / 16); 1762 fdc->state = SEEKCOMPLETE; 1763 return(0); /* will return later */ 1764 case SEEKCOMPLETE : /* SEEK DONE, START DMA */ 1765 /* Make sure seek really happened*/ 1766 if(fd->track == FD_NO_TRACK) { 1767 int descyl = b_cylinder * fd->ft->steptrac; 1768 do { 1769 /* 1770 * This might be a "ready changed" interrupt, 1771 * which cannot really happen since the 1772 * RDY pin is hardwired to + 5 volts. This 1773 * generally indicates a "bouncing" intr 1774 * line, so do one of the following: 1775 * 1776 * When running on an enhanced FDC that is 1777 * known to not go stuck after responding 1778 * with INVALID, fetch all interrupt states 1779 * until seeing either an INVALID or a 1780 * real interrupt condition. 1781 * 1782 * When running on a dumb old NE765, give 1783 * up immediately. The controller will 1784 * provide up to four dummy RC interrupt 1785 * conditions right after reset (for the 1786 * corresponding four drives), so this is 1787 * our only chance to get notice that it 1788 * was not the FDC that caused the interrupt. 1789 */ 1790 if (fd_sense_int(fdc, &st0, &cyl) 1791 == FD_NOT_VALID) 1792 return 0; 1793 if(fdc->fdct == FDC_NE765 1794 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 1795 return 0; /* hope for a real intr */ 1796 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 1797 1798 if (0 == descyl) { 1799 int failed = 0; 1800 /* 1801 * seek to cyl 0 requested; make sure we are 1802 * really there 1803 */ 1804 if (fd_sense_drive_status(fdc, &st3)) 1805 failed = 1; 1806 if ((st3 & NE7_ST3_T0) == 0) { 1807 printf( 1808 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", 1809 fdu, st3, NE7_ST3BITS); 1810 failed = 1; 1811 } 1812 1813 if (failed) { 1814 if(fdc->retry < 3) 1815 fdc->retry = 3; 1816 return (retrier(fdc)); 1817 } 1818 } 1819 1820 if (cyl != descyl) { 1821 printf( 1822 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", 1823 fdu, descyl, cyl, st0); 1824 if (fdc->retry < 3) 1825 fdc->retry = 3; 1826 return (retrier(fdc)); 1827 } 1828 } 1829 1830 fd->track = b_cylinder; 1831 if (!(fdc->flags & FDC_NODMA)) 1832 isa_dmastart(idf, bp->bio_data+fd->skip, 1833 format ? bp->bio_bcount : fdblk, fdc->dmachan); 1834 sectrac = fd->ft->sectrac; 1835 sec = blknum % (sectrac * fd->ft->heads); 1836 head = sec / sectrac; 1837 sec = sec % sectrac + 1; 1838 fd->hddrv = ((head&1)<<2)+fdu; 1839 1840 if(format || !read) 1841 { 1842 /* make sure the drive is writable */ 1843 if(fd_sense_drive_status(fdc, &st3) != 0) 1844 { 1845 /* stuck controller? */ 1846 if (!(fdc->flags & FDC_NODMA)) 1847 isa_dmadone(idf, 1848 bp->bio_data + fd->skip, 1849 format ? bp->bio_bcount : fdblk, 1850 fdc->dmachan); 1851 fdc->retry = 6; /* reset the beast */ 1852 return (retrier(fdc)); 1853 } 1854 if(st3 & NE7_ST3_WP) 1855 { 1856 /* 1857 * XXX YES! this is ugly. 1858 * in order to force the current operation 1859 * to fail, we will have to fake an FDC 1860 * error - all error handling is done 1861 * by the retrier() 1862 */ 1863 fdc->status[0] = NE7_ST0_IC_AT; 1864 fdc->status[1] = NE7_ST1_NW; 1865 fdc->status[2] = 0; 1866 fdc->status[3] = fd->track; 1867 fdc->status[4] = head; 1868 fdc->status[5] = sec; 1869 fdc->retry = 8; /* break out immediately */ 1870 fdc->state = IOTIMEDOUT; /* not really... */ 1871 return (1); 1872 } 1873 } 1874 1875 if (format) { 1876 if (fdc->flags & FDC_NODMA) { 1877 /* 1878 * This seems to be necessary for 1879 * whatever obscure reason; if we omit 1880 * it, we end up filling the sector ID 1881 * fields of the newly formatted track 1882 * entirely with garbage, causing 1883 * `wrong cylinder' errors all over 1884 * the place when trying to read them 1885 * back. 1886 * 1887 * Umpf. 1888 */ 1889 SET_BCDR(fdc, 1, bp->bio_bcount, 0); 1890 1891 (void)fdcpio(fdc,bp->bio_cmd, 1892 bp->bio_data+fd->skip, 1893 bp->bio_bcount); 1894 1895 } 1896 /* formatting */ 1897 if(fd_cmd(fdc, 6, NE7CMD_FORMAT, head << 2 | fdu, 1898 finfo->fd_formb_secshift, 1899 finfo->fd_formb_nsecs, 1900 finfo->fd_formb_gaplen, 1901 finfo->fd_formb_fillbyte, 0)) { 1902 /* controller fell over */ 1903 if (!(fdc->flags & FDC_NODMA)) 1904 isa_dmadone(idf, 1905 bp->bio_data + fd->skip, 1906 format ? bp->bio_bcount : fdblk, 1907 fdc->dmachan); 1908 fdc->retry = 6; 1909 return (retrier(fdc)); 1910 } 1911 } else { 1912 if (fdc->flags & FDC_NODMA) { 1913 /* 1914 * this seems to be necessary even when 1915 * reading data 1916 */ 1917 SET_BCDR(fdc, 1, fdblk, 0); 1918 1919 /* 1920 * perform the write pseudo-DMA before 1921 * the WRITE command is sent 1922 */ 1923 if (!read) 1924 (void)fdcpio(fdc,bp->bio_cmd, 1925 bp->bio_data+fd->skip, 1926 fdblk); 1927 } 1928 if (fd_cmd(fdc, 9, 1929 (read ? NE7CMD_READ : NE7CMD_WRITE), 1930 head << 2 | fdu, /* head & unit */ 1931 fd->track, /* track */ 1932 head, 1933 sec, /* sector + 1 */ 1934 fd->ft->secsize, /* sector size */ 1935 sectrac, /* sectors/track */ 1936 fd->ft->gap, /* gap size */ 1937 fd->ft->datalen, /* data length */ 1938 0)) { 1939 /* the beast is sleeping again */ 1940 if (!(fdc->flags & FDC_NODMA)) 1941 isa_dmadone(idf, 1942 bp->bio_data + fd->skip, 1943 format ? bp->bio_bcount : fdblk, 1944 fdc->dmachan); 1945 fdc->retry = 6; 1946 return (retrier(fdc)); 1947 } 1948 } 1949 if (fdc->flags & FDC_NODMA) 1950 /* 1951 * if this is a read, then simply await interrupt 1952 * before performing PIO 1953 */ 1954 if (read && !fdcpio(fdc,bp->bio_cmd, 1955 bp->bio_data+fd->skip,fdblk)) { 1956 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 1957 return(0); /* will return later */ 1958 }; 1959 1960 /* 1961 * write (or format) operation will fall through and 1962 * await completion interrupt 1963 */ 1964 fdc->state = IOCOMPLETE; 1965 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 1966 return (0); /* will return later */ 1967 case PIOREAD: 1968 /* 1969 * actually perform the PIO read. The IOCOMPLETE case 1970 * removes the timeout for us. 1971 */ 1972 (void)fdcpio(fdc,bp->bio_cmd,bp->bio_data+fd->skip,fdblk); 1973 fdc->state = IOCOMPLETE; 1974 /* FALLTHROUGH */ 1975 case IOCOMPLETE: /* IO DONE, post-analyze */ 1976 untimeout(fd_iotimeout, fdc, fd->tohandle); 1977 1978 if (fd_read_status(fdc, fd->fdsu)) { 1979 if (!(fdc->flags & FDC_NODMA)) 1980 isa_dmadone(idf, bp->bio_data + fd->skip, 1981 format ? bp->bio_bcount : fdblk, 1982 fdc->dmachan); 1983 if (fdc->retry < 6) 1984 fdc->retry = 6; /* force a reset */ 1985 return (retrier(fdc)); 1986 } 1987 1988 fdc->state = IOTIMEDOUT; 1989 1990 /* FALLTHROUGH */ 1991 1992 case IOTIMEDOUT: 1993 if (!(fdc->flags & FDC_NODMA)) 1994 isa_dmadone(idf, bp->bio_data + fd->skip, 1995 format ? bp->bio_bcount : fdblk, fdc->dmachan); 1996 if (fdc->status[0] & NE7_ST0_IC) { 1997 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 1998 && fdc->status[1] & NE7_ST1_OR) { 1999 /* 2000 * DMA overrun. Someone hogged the bus 2001 * and didn't release it in time for the 2002 * next FDC transfer. 2003 * Just restart it, don't increment retry 2004 * count. (vak) 2005 */ 2006 fdc->state = SEEKCOMPLETE; 2007 return (1); 2008 } 2009 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV 2010 && fdc->retry < 6) 2011 fdc->retry = 6; /* force a reset */ 2012 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2013 && fdc->status[2] & NE7_ST2_WC 2014 && fdc->retry < 3) 2015 fdc->retry = 3; /* force recalibrate */ 2016 return (retrier(fdc)); 2017 } 2018 /* All OK */ 2019 fd->skip += fdblk; 2020 if (!format && fd->skip < bp->bio_bcount - bp->bio_resid) { 2021 /* set up next transfer */ 2022 fdc->state = DOSEEK; 2023 } else { 2024 /* ALL DONE */ 2025 fd->skip = 0; 2026 fdc->bp = NULL; 2027 device_unbusy(fd->dev); 2028 devstat_end_transaction_bio(&fd->device_stats, bp); 2029 biodone(bp); 2030 fdc->fd = (fd_p) 0; 2031 fdc->fdu = -1; 2032 fdc->state = FINDWORK; 2033 } 2034 return (1); 2035 case RESETCTLR: 2036 fdc_reset(fdc); 2037 fdc->retry++; 2038 fdc->state = RESETCOMPLETE; 2039 return (0); 2040 case RESETCOMPLETE: 2041 /* 2042 * Discard all the results from the reset so that they 2043 * can't cause an unexpected interrupt later. 2044 */ 2045 for (i = 0; i < 4; i++) 2046 (void)fd_sense_int(fdc, &st0, &cyl); 2047 fdc->state = STARTRECAL; 2048 /* Fall through. */ 2049 case STARTRECAL: 2050 if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) { 2051 /* arrgl */ 2052 fdc->retry = 6; 2053 return (retrier(fdc)); 2054 } 2055 fdc->state = RECALWAIT; 2056 return (0); /* will return later */ 2057 case RECALWAIT: 2058 /* allow heads to settle */ 2059 timeout(fd_pseudointr, fdc, hz / 8); 2060 fdc->state = RECALCOMPLETE; 2061 return (0); /* will return later */ 2062 case RECALCOMPLETE: 2063 do { 2064 /* 2065 * See SEEKCOMPLETE for a comment on this: 2066 */ 2067 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 2068 return 0; 2069 if(fdc->fdct == FDC_NE765 2070 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 2071 return 0; /* hope for a real intr */ 2072 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 2073 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0) 2074 { 2075 if(fdc->retry > 3) 2076 /* 2077 * a recalibrate from beyond cylinder 77 2078 * will "fail" due to the FDC limitations; 2079 * since people used to complain much about 2080 * the failure message, try not logging 2081 * this one if it seems to be the first 2082 * time in a line 2083 */ 2084 printf("fd%d: recal failed ST0 %b cyl %d\n", 2085 fdu, st0, NE7_ST0BITS, cyl); 2086 if(fdc->retry < 3) fdc->retry = 3; 2087 return (retrier(fdc)); 2088 } 2089 fd->track = 0; 2090 /* Seek (probably) necessary */ 2091 fdc->state = DOSEEK; 2092 return (1); /* will return immediatly */ 2093 case MOTORWAIT: 2094 if(fd->flags & FD_MOTOR_WAIT) 2095 { 2096 return (0); /* time's not up yet */ 2097 } 2098 if (fdc->flags & FDC_NEEDS_RESET) { 2099 fdc->state = RESETCTLR; 2100 fdc->flags &= ~FDC_NEEDS_RESET; 2101 } else { 2102 /* 2103 * If all motors were off, then the controller was 2104 * reset, so it has lost track of the current 2105 * cylinder. Recalibrate to handle this case. 2106 * But first, discard the results of the reset. 2107 */ 2108 fdc->state = RESETCOMPLETE; 2109 } 2110 return (1); /* will return immediatly */ 2111 default: 2112 device_printf(fdc->fdc_dev, "unexpected FD int->"); 2113 if (fd_read_status(fdc, fd->fdsu) == 0) 2114 printf("FDC status :%x %x %x %x %x %x %x ", 2115 fdc->status[0], 2116 fdc->status[1], 2117 fdc->status[2], 2118 fdc->status[3], 2119 fdc->status[4], 2120 fdc->status[5], 2121 fdc->status[6] ); 2122 else 2123 printf("No status available "); 2124 if (fd_sense_int(fdc, &st0, &cyl) != 0) 2125 { 2126 printf("[controller is dead now]\n"); 2127 return (0); 2128 } 2129 printf("ST0 = %x, PCN = %x\n", st0, cyl); 2130 return (0); 2131 } 2132 /*XXX confusing: some branches return immediately, others end up here*/ 2133 return (1); /* Come back immediatly to new state */ 2134} 2135 2136static int 2137retrier(struct fdc_data *fdc) 2138{ 2139 struct bio *bp; 2140 struct fd_data *fd; 2141 int fdu; 2142 2143 bp = fdc->bp; 2144 2145 /* XXX shouldn't this be cached somewhere? */ 2146 fdu = FDUNIT(minor(bp->bio_dev)); 2147 fd = devclass_get_softc(fd_devclass, fdu); 2148 if (fd->options & FDOPT_NORETRY) 2149 goto fail; 2150 2151 switch (fdc->retry) { 2152 case 0: case 1: case 2: 2153 fdc->state = SEEKCOMPLETE; 2154 break; 2155 case 3: case 4: case 5: 2156 fdc->state = STARTRECAL; 2157 break; 2158 case 6: 2159 fdc->state = RESETCTLR; 2160 break; 2161 case 7: 2162 break; 2163 default: 2164 fail: 2165 { 2166 dev_t sav_bio_dev = bp->bio_dev; 2167 /* Trick diskerr */ 2168 bp->bio_dev = makedev(major(bp->bio_dev), 2169 (FDUNIT(minor(bp->bio_dev))<<3)|RAW_PART); 2170 diskerr(bp, "hard error", LOG_PRINTF, 2171 fdc->fd->skip / DEV_BSIZE, 2172 (struct disklabel *)NULL); 2173 bp->bio_dev = sav_bio_dev; 2174 if (fdc->flags & FDC_STAT_VALID) 2175 { 2176 printf( 2177 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n", 2178 fdc->status[0], NE7_ST0BITS, 2179 fdc->status[1], NE7_ST1BITS, 2180 fdc->status[2], NE7_ST2BITS, 2181 fdc->status[3], fdc->status[4], 2182 fdc->status[5]); 2183 } 2184 else 2185 printf(" (No status)\n"); 2186 } 2187 bp->bio_flags |= BIO_ERROR; 2188 bp->bio_error = EIO; 2189 bp->bio_resid += bp->bio_bcount - fdc->fd->skip; 2190 fdc->bp = NULL; 2191 fdc->fd->skip = 0; 2192 device_unbusy(fd->dev); 2193 devstat_end_transaction_bio(&fdc->fd->device_stats, bp); 2194 biodone(bp); 2195 fdc->state = FINDWORK; 2196 fdc->flags |= FDC_NEEDS_RESET; 2197 fdc->fd = (fd_p) 0; 2198 fdc->fdu = -1; 2199 return (1); 2200 } 2201 fdc->retry++; 2202 return (1); 2203} 2204 2205static int 2206fdformat(dev, finfo, p) 2207 dev_t dev; 2208 struct fd_formb *finfo; 2209 struct proc *p; 2210{ 2211 fdu_t fdu; 2212 fd_p fd; 2213 2214 struct buf *bp; 2215 int rv = 0, s; 2216 size_t fdblk; 2217 2218 fdu = FDUNIT(minor(dev)); 2219 fd = devclass_get_softc(fd_devclass, fdu); 2220 fdblk = 128 << fd->ft->secsize; 2221 2222 /* set up a buffer header for fdstrategy() */ 2223 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2224 if(bp == 0) 2225 return ENOBUFS; 2226 /* 2227 * keep the process from being swapped 2228 */ 2229 PHOLD(p); 2230 bzero((void *)bp, sizeof(struct buf)); 2231 BUF_LOCKINIT(bp); 2232 BUF_LOCK(bp, LK_EXCLUSIVE); 2233 bp->b_flags = B_PHYS; 2234 bp->b_iocmd = BIO_FORMAT; 2235 2236 /* 2237 * calculate a fake blkno, so fdstrategy() would initiate a 2238 * seek to the requested cylinder 2239 */ 2240 bp->b_blkno = (finfo->cyl * (fd->ft->sectrac * fd->ft->heads) 2241 + finfo->head * fd->ft->sectrac) * fdblk / DEV_BSIZE; 2242 2243 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2244 bp->b_data = (caddr_t)finfo; 2245 2246 /* now do the format */ 2247 bp->b_dev = dev; 2248 DEV_STRATEGY(bp, 0); 2249 2250 /* ...and wait for it to complete */ 2251 s = splbio(); 2252 while(!(bp->b_flags & B_DONE)) { 2253 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2254 if (rv == EWOULDBLOCK) 2255 break; 2256 } 2257 splx(s); 2258 2259 if (rv == EWOULDBLOCK) { 2260 /* timed out */ 2261 rv = EIO; 2262 device_unbusy(fd->dev); 2263 biodone(&bp->b_io); /* XXX: HUH ? */ 2264 } 2265 if (bp->b_ioflags & BIO_ERROR) 2266 rv = bp->b_error; 2267 /* 2268 * allow the process to be swapped 2269 */ 2270 PRELE(p); 2271 BUF_UNLOCK(bp); 2272 BUF_LOCKFREE(bp); 2273 free(bp, M_TEMP); 2274 return rv; 2275} 2276 2277/* 2278 * TODO: don't allocate buffer on stack. 2279 */ 2280 2281static int 2282fdioctl(dev, cmd, addr, flag, p) 2283 dev_t dev; 2284 u_long cmd; 2285 caddr_t addr; 2286 int flag; 2287 struct proc *p; 2288{ 2289 fdu_t fdu = FDUNIT(minor(dev)); 2290 fd_p fd = devclass_get_softc(fd_devclass, fdu); 2291 size_t fdblk; 2292 2293 struct fd_type *fdt; 2294 struct disklabel *dl; 2295 char buffer[DEV_BSIZE]; 2296 int error = 0; 2297 2298 fdblk = 128 << fd->ft->secsize; 2299 2300 switch (cmd) { 2301 case DIOCGDINFO: 2302 bzero(buffer, sizeof (buffer)); 2303 dl = (struct disklabel *)buffer; 2304 dl->d_secsize = fdblk; 2305 fdt = fd->ft; 2306 dl->d_secpercyl = fdt->size / fdt->tracks; 2307 dl->d_type = DTYPE_FLOPPY; 2308 2309 if (readdisklabel(dkmodpart(dev, RAW_PART), dl) 2310 == NULL) 2311 error = 0; 2312 else 2313 error = EINVAL; 2314 2315 *(struct disklabel *)addr = *dl; 2316 break; 2317 2318 case DIOCSDINFO: 2319 if ((flag & FWRITE) == 0) 2320 error = EBADF; 2321 break; 2322 2323 case DIOCWLABEL: 2324 if ((flag & FWRITE) == 0) 2325 error = EBADF; 2326 break; 2327 2328 case DIOCWDINFO: 2329 if ((flag & FWRITE) == 0) { 2330 error = EBADF; 2331 break; 2332 } 2333 2334 dl = (struct disklabel *)addr; 2335 2336 if ((error = setdisklabel((struct disklabel *)buffer, dl, 2337 (u_long)0)) != 0) 2338 break; 2339 2340 error = writedisklabel(dev, (struct disklabel *)buffer); 2341 break; 2342 case FD_FORM: 2343 if ((flag & FWRITE) == 0) 2344 error = EBADF; /* must be opened for writing */ 2345 else if (((struct fd_formb *)addr)->format_version != 2346 FD_FORMAT_VERSION) 2347 error = EINVAL; /* wrong version of formatting prog */ 2348 else 2349 error = fdformat(dev, (struct fd_formb *)addr, p); 2350 break; 2351 2352 case FD_GTYPE: /* get drive type */ 2353 *(struct fd_type *)addr = *fd->ft; 2354 break; 2355 2356 case FD_STYPE: /* set drive type */ 2357 /* this is considered harmful; only allow for superuser */ 2358 if (suser(p) != 0) 2359 return EPERM; 2360 *fd->ft = *(struct fd_type *)addr; 2361 break; 2362 2363 case FD_GOPTS: /* get drive options */ 2364 *(int *)addr = fd->options; 2365 break; 2366 2367 case FD_SOPTS: /* set drive options */ 2368 fd->options = *(int *)addr; 2369 break; 2370 2371 default: 2372 error = ENOTTY; 2373 break; 2374 } 2375 return (error); 2376} 2377 2378/* 2379 * Hello emacs, these are the 2380 * Local Variables: 2381 * c-indent-level: 8 2382 * c-continued-statement-offset: 8 2383 * c-continued-brace-offset: 0 2384 * c-brace-offset: -8 2385 * c-brace-imaginary-offset: 0 2386 * c-argdecl-indent: 8 2387 * c-label-offset: -8 2388 * c++-hanging-braces: 1 2389 * c++-access-specifier-offset: -8 2390 * c++-empty-arglist-indent: 8 2391 * c++-friend-offset: 0 2392 * End: 2393 */
| 61#include <sys/buf.h> 62#include <sys/bus.h> 63#include <sys/conf.h> 64#include <sys/disklabel.h> 65#include <sys/devicestat.h> 66#include <sys/fcntl.h> 67#include <sys/malloc.h> 68#include <sys/module.h> 69#include <sys/proc.h> 70#include <sys/syslog.h> 71 72#include <sys/bus.h> 73#include <machine/bus.h> 74#include <sys/rman.h> 75 76#include <machine/clock.h> 77#include <machine/ioctl_fd.h> 78#include <machine/resource.h> 79#include <machine/stdarg.h> 80 81#include <isa/isavar.h> 82#include <isa/isareg.h> 83#include <isa/fdreg.h> 84#include <isa/fdc.h> 85#include <isa/rtc.h> 86 87/* misuse a flag to identify format operation */ 88 89/* configuration flags */ 90#define FDC_PRETEND_D0 (1 << 0) /* pretend drive 0 to be there */ 91#define FDC_NO_FIFO (1 << 2) /* do not enable FIFO */ 92 93/* internally used only, not really from CMOS: */ 94#define RTCFDT_144M_PRETENDED 0x1000 95 96/* error returns for fd_cmd() */ 97#define FD_FAILED -1 98#define FD_NOT_VALID -2 99#define FDC_ERRMAX 100 /* do not log more */ 100 101#define NUMTYPES 17 102#define NUMDENS (NUMTYPES - 7) 103 104/* These defines (-1) must match index for fd_types */ 105#define F_TAPE_TYPE 0x020 /* bit for fd_types to indicate tape */ 106#define NO_TYPE 0 /* must match NO_TYPE in ft.c */ 107#define FD_1720 1 108#define FD_1480 2 109#define FD_1440 3 110#define FD_1200 4 111#define FD_820 5 112#define FD_800 6 113#define FD_720 7 114#define FD_360 8 115#define FD_640 9 116#define FD_1232 10 117 118#define FD_1480in5_25 11 119#define FD_1440in5_25 12 120#define FD_820in5_25 13 121#define FD_800in5_25 14 122#define FD_720in5_25 15 123#define FD_360in5_25 16 124#define FD_640in5_25 17 125 126 127static struct fd_type fd_types[NUMTYPES] = 128{ 129{ 21,2,0xFF,0x04,82,3444,1,FDC_500KBPS,2,0x0C,2 }, /* 1.72M in HD 3.5in */ 130{ 18,2,0xFF,0x1B,82,2952,1,FDC_500KBPS,2,0x6C,1 }, /* 1.48M in HD 3.5in */ 131{ 18,2,0xFF,0x1B,80,2880,1,FDC_500KBPS,2,0x6C,1 }, /* 1.44M in HD 3.5in */ 132{ 15,2,0xFF,0x1B,80,2400,1,FDC_500KBPS,2,0x54,1 }, /* 1.2M in HD 5.25/3.5 */ 133{ 10,2,0xFF,0x10,82,1640,1,FDC_250KBPS,2,0x2E,1 }, /* 820K in HD 3.5in */ 134{ 10,2,0xFF,0x10,80,1600,1,FDC_250KBPS,2,0x2E,1 }, /* 800K in HD 3.5in */ 135{ 9,2,0xFF,0x20,80,1440,1,FDC_250KBPS,2,0x50,1 }, /* 720K in HD 3.5in */ 136{ 9,2,0xFF,0x2A,40, 720,1,FDC_250KBPS,2,0x50,1 }, /* 360K in DD 5.25in */ 137{ 8,2,0xFF,0x2A,80,1280,1,FDC_250KBPS,2,0x50,1 }, /* 640K in DD 5.25in */ 138{ 8,3,0xFF,0x35,77,1232,1,FDC_500KBPS,2,0x74,1 }, /* 1.23M in HD 5.25in */ 139 140{ 18,2,0xFF,0x02,82,2952,1,FDC_500KBPS,2,0x02,2 }, /* 1.48M in HD 5.25in */ 141{ 18,2,0xFF,0x02,80,2880,1,FDC_500KBPS,2,0x02,2 }, /* 1.44M in HD 5.25in */ 142{ 10,2,0xFF,0x10,82,1640,1,FDC_300KBPS,2,0x2E,1 }, /* 820K in HD 5.25in */ 143{ 10,2,0xFF,0x10,80,1600,1,FDC_300KBPS,2,0x2E,1 }, /* 800K in HD 5.25in */ 144{ 9,2,0xFF,0x20,80,1440,1,FDC_300KBPS,2,0x50,1 }, /* 720K in HD 5.25in */ 145{ 9,2,0xFF,0x23,40, 720,2,FDC_300KBPS,2,0x50,1 }, /* 360K in HD 5.25in */ 146{ 8,2,0xFF,0x2A,80,1280,1,FDC_300KBPS,2,0x50,1 }, /* 640K in HD 5.25in */ 147}; 148 149#define DRVS_PER_CTLR 2 /* 2 floppies */ 150 151/***********************************************************************\ 152* Per controller structure. * 153\***********************************************************************/ 154static devclass_t fdc_devclass; 155 156/***********************************************************************\ 157* Per drive structure. * 158* N per controller (DRVS_PER_CTLR) * 159\***********************************************************************/ 160struct fd_data { 161 struct fdc_data *fdc; /* pointer to controller structure */ 162 int fdsu; /* this units number on this controller */ 163 int type; /* Drive type (FD_1440...) */ 164 struct fd_type *ft; /* pointer to the type descriptor */ 165 int flags; 166#define FD_OPEN 0x01 /* it's open */ 167#define FD_ACTIVE 0x02 /* it's active */ 168#define FD_MOTOR 0x04 /* motor should be on */ 169#define FD_MOTOR_WAIT 0x08 /* motor coming up */ 170 int skip; 171 int hddrv; 172#define FD_NO_TRACK -2 173 int track; /* where we think the head is */ 174 int options; /* user configurable options, see ioctl_fd.h */ 175 struct callout_handle toffhandle; 176 struct callout_handle tohandle; 177 struct devstat device_stats; 178 device_t dev; 179 fdu_t fdu; 180}; 181 182struct fdc_ivars { 183 int fdunit; 184}; 185static 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/* needed for ft driver, thus exported */ 197int in_fdc(struct fdc_data *); 198int out_fdc(struct fdc_data *, int); 199 200/* internal functions */ 201static void fdc_intr(void *); 202static void set_motor(struct fdc_data *, int, int); 203# define TURNON 1 204# define TURNOFF 0 205static timeout_t fd_turnoff; 206static timeout_t fd_motor_on; 207static void fd_turnon(struct fd_data *); 208static void fdc_reset(fdc_p); 209static int fd_in(struct fdc_data *, int *); 210static void fdstart(struct fdc_data *); 211static timeout_t fd_iotimeout; 212static timeout_t fd_pseudointr; 213static int fdstate(struct fdc_data *); 214static int retrier(struct fdc_data *); 215static int fdformat(dev_t, struct fd_formb *, struct proc *); 216 217static int enable_fifo(fdc_p fdc); 218 219static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */ 220 221 222#define DEVIDLE 0 223#define FINDWORK 1 224#define DOSEEK 2 225#define SEEKCOMPLETE 3 226#define IOCOMPLETE 4 227#define RECALCOMPLETE 5 228#define STARTRECAL 6 229#define RESETCTLR 7 230#define SEEKWAIT 8 231#define RECALWAIT 9 232#define MOTORWAIT 10 233#define IOTIMEDOUT 11 234#define RESETCOMPLETE 12 235#define PIOREAD 13 236 237#ifdef FDC_DEBUG 238static char const * const fdstates[] = 239{ 240"DEVIDLE", 241"FINDWORK", 242"DOSEEK", 243"SEEKCOMPLETE", 244"IOCOMPLETE", 245"RECALCOMPLETE", 246"STARTRECAL", 247"RESETCTLR", 248"SEEKWAIT", 249"RECALWAIT", 250"MOTORWAIT", 251"IOTIMEDOUT", 252"RESETCOMPLETE", 253"PIOREAD", 254}; 255 256/* CAUTION: fd_debug causes huge amounts of logging output */ 257static int volatile fd_debug = 0; 258#define TRACE0(arg) if(fd_debug) printf(arg) 259#define TRACE1(arg1, arg2) if(fd_debug) printf(arg1, arg2) 260#else /* FDC_DEBUG */ 261#define TRACE0(arg) 262#define TRACE1(arg1, arg2) 263#endif /* FDC_DEBUG */ 264 265static void 266fdout_wr(fdc_p fdc, u_int8_t v) 267{ 268 bus_space_write_1(fdc->portt, fdc->porth, FDOUT+fdc->port_off, v); 269} 270 271static u_int8_t 272fdsts_rd(fdc_p fdc) 273{ 274 return bus_space_read_1(fdc->portt, fdc->porth, FDSTS+fdc->port_off); 275} 276 277static void 278fddata_wr(fdc_p fdc, u_int8_t v) 279{ 280 bus_space_write_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off, v); 281} 282 283static u_int8_t 284fddata_rd(fdc_p fdc) 285{ 286 return bus_space_read_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off); 287} 288 289static void 290fdctl_wr_isa(fdc_p fdc, u_int8_t v) 291{ 292 bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v); 293} 294 295static void 296fdctl_wr_pcmcia(fdc_p fdc, u_int8_t v) 297{ 298 bus_space_write_1(fdc->portt, fdc->porth, FDCTL+fdc->port_off, v); 299} 300 301#if 0 302 303static u_int8_t 304fdin_rd(fdc_p fdc) 305{ 306 return bus_space_read_1(fdc->portt, fdc->porth, FDIN); 307} 308 309#endif 310 311static d_open_t Fdopen; /* NOTE, not fdopen */ 312static d_close_t fdclose; 313static d_ioctl_t fdioctl; 314static d_strategy_t fdstrategy; 315 316#define CDEV_MAJOR 9 317#define BDEV_MAJOR 2 318 319static struct cdevsw fd_cdevsw = { 320 /* open */ Fdopen, 321 /* close */ fdclose, 322 /* read */ physread, 323 /* write */ physwrite, 324 /* ioctl */ fdioctl, 325 /* poll */ nopoll, 326 /* mmap */ nommap, 327 /* strategy */ fdstrategy, 328 /* name */ "fd", 329 /* maj */ CDEV_MAJOR, 330 /* dump */ nodump, 331 /* psize */ nopsize, 332 /* flags */ D_DISK, 333 /* bmaj */ BDEV_MAJOR 334}; 335 336static int 337fdc_err(struct fdc_data *fdc, const char *s) 338{ 339 fdc->fdc_errs++; 340 if (s) { 341 if (fdc->fdc_errs < FDC_ERRMAX) 342 device_printf(fdc->fdc_dev, "%s", s); 343 else if (fdc->fdc_errs == FDC_ERRMAX) 344 device_printf(fdc->fdc_dev, "too many errors, not " 345 "logging any more\n"); 346 } 347 348 return FD_FAILED; 349} 350 351/* 352 * fd_cmd: Send a command to the chip. Takes a varargs with this structure: 353 * Unit number, 354 * # of output bytes, output bytes as ints ..., 355 * # of input bytes, input bytes as ints ... 356 */ 357static int 358fd_cmd(struct fdc_data *fdc, int n_out, ...) 359{ 360 u_char cmd; 361 int n_in; 362 int n; 363 va_list ap; 364 365 va_start(ap, n_out); 366 cmd = (u_char)(va_arg(ap, int)); 367 va_end(ap); 368 va_start(ap, n_out); 369 for (n = 0; n < n_out; n++) 370 { 371 if (out_fdc(fdc, va_arg(ap, int)) < 0) 372 { 373 char msg[50]; 374 snprintf(msg, sizeof(msg), 375 "cmd %x failed at out byte %d of %d\n", 376 cmd, n + 1, n_out); 377 return fdc_err(fdc, msg); 378 } 379 } 380 n_in = va_arg(ap, int); 381 for (n = 0; n < n_in; n++) 382 { 383 int *ptr = va_arg(ap, int *); 384 if (fd_in(fdc, ptr) < 0) 385 { 386 char msg[50]; 387 snprintf(msg, sizeof(msg), 388 "cmd %02x failed at in byte %d of %d\n", 389 cmd, n + 1, n_in); 390 return fdc_err(fdc, msg); 391 } 392 } 393 394 return 0; 395} 396 397static int 398enable_fifo(fdc_p fdc) 399{ 400 int i, j; 401 402 if ((fdc->flags & FDC_HAS_FIFO) == 0) { 403 404 /* 405 * XXX: 406 * Cannot use fd_cmd the normal way here, since 407 * this might be an invalid command. Thus we send the 408 * first byte, and check for an early turn of data directon. 409 */ 410 411 if (out_fdc(fdc, I8207X_CONFIGURE) < 0) 412 return fdc_err(fdc, "Enable FIFO failed\n"); 413 414 /* If command is invalid, return */ 415 j = 100000; 416 while ((i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM)) 417 != NE7_RQM && j-- > 0) 418 if (i == (NE7_DIO | NE7_RQM)) { 419 fdc_reset(fdc); 420 return FD_FAILED; 421 } 422 if (j<0 || 423 fd_cmd(fdc, 3, 424 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) { 425 fdc_reset(fdc); 426 return fdc_err(fdc, "Enable FIFO failed\n"); 427 } 428 fdc->flags |= FDC_HAS_FIFO; 429 return 0; 430 } 431 if (fd_cmd(fdc, 4, 432 I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) 433 return fdc_err(fdc, "Re-enable FIFO failed\n"); 434 return 0; 435} 436 437static int 438fd_sense_drive_status(fdc_p fdc, int *st3p) 439{ 440 int st3; 441 442 if (fd_cmd(fdc, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3)) 443 { 444 return fdc_err(fdc, "Sense Drive Status failed\n"); 445 } 446 if (st3p) 447 *st3p = st3; 448 449 return 0; 450} 451 452static int 453fd_sense_int(fdc_p fdc, int *st0p, int *cylp) 454{ 455 int cyl, st0, ret; 456 457 ret = fd_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); 458 if (ret) { 459 (void)fdc_err(fdc, 460 "sense intr err reading stat reg 0\n"); 461 return ret; 462 } 463 464 if (st0p) 465 *st0p = st0; 466 467 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { 468 /* 469 * There doesn't seem to have been an interrupt. 470 */ 471 return FD_NOT_VALID; 472 } 473 474 if (fd_in(fdc, &cyl) < 0) { 475 return fdc_err(fdc, "can't get cyl num\n"); 476 } 477 478 if (cylp) 479 *cylp = cyl; 480 481 return 0; 482} 483 484 485static int 486fd_read_status(fdc_p fdc, int fdsu) 487{ 488 int i, ret; 489 490 for (i = 0; i < 7; i++) { 491 /* 492 * XXX types are poorly chosen. Only bytes can by read 493 * from the hardware, but fdc->status[] wants u_ints and 494 * fd_in() gives ints. 495 */ 496 int status; 497 498 ret = fd_in(fdc, &status); 499 fdc->status[i] = status; 500 if (ret != 0) 501 break; 502 } 503 504 if (ret == 0) 505 fdc->flags |= FDC_STAT_VALID; 506 else 507 fdc->flags &= ~FDC_STAT_VALID; 508 509 return ret; 510} 511 512/****************************************************************************/ 513/* autoconfiguration stuff */ 514/****************************************************************************/ 515 516static int 517fdc_alloc_resources(struct fdc_data *fdc) 518{ 519 device_t dev; 520 int ispnp, ispcmcia; 521 522 dev = fdc->fdc_dev; 523 ispnp = (fdc->flags & FDC_ISPNP) != 0; 524 ispcmcia = (fdc->flags & FDC_ISPCMCIA) != 0; 525 fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0; 526 fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0; 527 528 /* 529 * On standard ISA, we don't just use an 8 port range 530 * (e.g. 0x3f0-0x3f7) since that covers an IDE control 531 * register at 0x3f6. 532 * 533 * Isn't PC hardware wonderful. 534 * 535 * The Y-E Data PCMCIA FDC doesn't have this problem, it 536 * uses the register with offset 6 for pseudo-DMA, and the 537 * one with offset 7 as control register. 538 */ 539 fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT, 540 &fdc->rid_ioport, 0ul, ~0ul, 541 ispcmcia ? 8 : (ispnp ? 1 : 6), 542 RF_ACTIVE); 543 if (fdc->res_ioport == 0) { 544 device_printf(dev, "cannot reserve I/O port range\n"); 545 return ENXIO; 546 } 547 fdc->portt = rman_get_bustag(fdc->res_ioport); 548 fdc->porth = rman_get_bushandle(fdc->res_ioport); 549 550 if (!ispcmcia) { 551 /* 552 * Some BIOSen report the device at 0x3f2-0x3f5,0x3f7 553 * and some at 0x3f0-0x3f5,0x3f7. We detect the former 554 * by checking the size and adjust the port address 555 * accordingly. 556 */ 557 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 0) == 4) 558 fdc->port_off = -2; 559 560 /* 561 * Register the control port range as rid 1 if it 562 * isn't there already. Most PnP BIOSen will have 563 * already done this but non-PnP configurations don't. 564 * 565 * And some (!!) report 0x3f2-0x3f5 and completely 566 * leave out the control register! It seems that some 567 * non-antique controller chips have a different 568 * method of programming the transfer speed which 569 * doesn't require the control register, but it's 570 * mighty bogus as the chip still responds to the 571 * address for the control register. 572 */ 573 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 1) == 0) { 574 u_long ctlstart; 575 576 /* Find the control port, usually 0x3f7 */ 577 ctlstart = rman_get_start(fdc->res_ioport) + 578 fdc->port_off + 7; 579 580 bus_set_resource(dev, SYS_RES_IOPORT, 1, ctlstart, 1); 581 } 582 583 /* 584 * Now (finally!) allocate the control port. 585 */ 586 fdc->rid_ctl = 1; 587 fdc->res_ctl = bus_alloc_resource(dev, SYS_RES_IOPORT, 588 &fdc->rid_ctl, 589 0ul, ~0ul, 1, RF_ACTIVE); 590 if (fdc->res_ctl == 0) { 591 device_printf(dev, 592 "cannot reserve control I/O port range\n"); 593 return ENXIO; 594 } 595 fdc->ctlt = rman_get_bustag(fdc->res_ctl); 596 fdc->ctlh = rman_get_bushandle(fdc->res_ctl); 597 } 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_printf(dev, "cannot reserve interrupt line\n"); 604 return ENXIO; 605 } 606 607 if ((fdc->flags & FDC_NODMA) == 0) { 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_printf(dev, "cannot reserve DMA request line\n"); 613 return ENXIO; 614 } 615 fdc->dmachan = fdc->res_drq->r_start; 616 } 617 618 return 0; 619} 620 621static void 622fdc_release_resources(struct fdc_data *fdc) 623{ 624 device_t dev; 625 626 dev = fdc->fdc_dev; 627 if (fdc->res_irq != 0) { 628 bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 629 fdc->res_irq); 630 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 631 fdc->res_irq); 632 } 633 if (fdc->res_ctl != 0) { 634 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 635 fdc->res_ctl); 636 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 637 fdc->res_ctl); 638 } 639 if (fdc->res_ioport != 0) { 640 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 641 fdc->res_ioport); 642 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 643 fdc->res_ioport); 644 } 645 if (fdc->res_drq != 0) { 646 bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 647 fdc->res_drq); 648 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 649 fdc->res_drq); 650 } 651} 652 653/****************************************************************************/ 654/* autoconfiguration stuff */ 655/****************************************************************************/ 656 657static struct isa_pnp_id fdc_ids[] = { 658 {0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */ 659 {0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */ 660 {0} 661}; 662 663static int 664fdc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 665{ 666 struct fdc_ivars *ivars = device_get_ivars(child); 667 668 switch (which) { 669 case FDC_IVAR_FDUNIT: 670 *result = ivars->fdunit; 671 break; 672 default: 673 return ENOENT; 674 } 675 return 0; 676} 677 678/* 679 * fdc controller section. 680 */ 681static int 682fdc_probe(device_t dev) 683{ 684 int error, ic_type; 685 struct fdc_data *fdc; 686 687 fdc = device_get_softc(dev); 688 bzero(fdc, sizeof *fdc); 689 fdc->fdc_dev = dev; 690 fdc->fdctl_wr = fdctl_wr_isa; 691 692 /* Check pnp ids */ 693 error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids); 694 if (error == ENXIO) 695 return ENXIO; 696 if (error == 0) 697 fdc->flags |= FDC_ISPNP; 698 699 /* Attempt to allocate our resources for the duration of the probe */ 700 error = fdc_alloc_resources(fdc); 701 if (error) 702 goto out; 703 704 /* First - lets reset the floppy controller */ 705 fdout_wr(fdc, 0); 706 DELAY(100); 707 fdout_wr(fdc, FDO_FRST); 708 709 /* see if it can handle a command */ 710 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 711 NE7_SPEC_2(2, 0), 0)) { 712 error = ENXIO; 713 goto out; 714 } 715 716 if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) { 717 ic_type = (u_char)ic_type; 718 switch (ic_type) { 719 case 0x80: 720 device_set_desc(dev, "NEC 765 or clone"); 721 fdc->fdct = FDC_NE765; 722 break; 723 case 0x81: 724 device_set_desc(dev, "Intel 82077 or clone"); 725 fdc->fdct = FDC_I82077; 726 break; 727 case 0x90: 728 device_set_desc(dev, "NEC 72065B or clone"); 729 fdc->fdct = FDC_NE72065; 730 break; 731 default: 732 device_set_desc(dev, "generic floppy controller"); 733 fdc->fdct = FDC_UNKNOWN; 734 break; 735 } 736 } 737 738out: 739 fdc_release_resources(fdc); 740 return (error); 741} 742 743#if NCARD > 0 744 745static int 746fdc_pccard_probe(device_t dev) 747{ 748 int error; 749 struct fdc_data *fdc; 750 751 fdc = device_get_softc(dev); 752 bzero(fdc, sizeof *fdc); 753 fdc->fdc_dev = dev; 754 fdc->fdctl_wr = fdctl_wr_pcmcia; 755 756 fdc->flags |= FDC_ISPCMCIA | FDC_NODMA; 757 758 /* Attempt to allocate our resources for the duration of the probe */ 759 error = fdc_alloc_resources(fdc); 760 if (error) 761 goto out; 762 763 /* First - lets reset the floppy controller */ 764 fdout_wr(fdc, 0); 765 DELAY(100); 766 fdout_wr(fdc, FDO_FRST); 767 768 /* see if it can handle a command */ 769 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 770 NE7_SPEC_2(2, 0), 0)) { 771 error = ENXIO; 772 goto out; 773 } 774 775 device_set_desc(dev, "Y-E Data PCMCIA floppy"); 776 fdc->fdct = FDC_NE765; 777 778out: 779 fdc_release_resources(fdc); 780 return (error); 781} 782 783static int 784fdc_pccard_detach(device_t dev) 785{ 786 struct fdc_data *fdc; 787 int error; 788 789 fdc = device_get_softc(dev); 790 791 /* have our children detached first */ 792 if ((error = bus_generic_detach(dev))) 793 return (error); 794 795 if ((fdc->flags & FDC_ATTACHED) == 0) { 796 device_printf(dev, "already unloaded\n"); 797 return (0); 798 } 799 fdc->flags &= ~FDC_ATTACHED; 800 801 BUS_TEARDOWN_INTR(device_get_parent(dev), dev, fdc->res_irq, 802 fdc->fdc_intr); 803 fdc_release_resources(fdc); 804 device_printf(dev, "unload\n"); 805 return (0); 806} 807 808#endif /* NCARD > 0 */ 809 810/* 811 * Add a child device to the fdc controller. It will then be probed etc. 812 */ 813static void 814fdc_add_child(device_t dev, const char *name, int unit) 815{ 816 int disabled; 817 struct fdc_ivars *ivar; 818 device_t child; 819 820 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT); 821 if (ivar == NULL) 822 return; 823 bzero(ivar, sizeof *ivar); 824 if (resource_int_value(name, unit, "drive", &ivar->fdunit) != 0) 825 ivar->fdunit = 0; 826 child = device_add_child(dev, name, unit); 827 if (child == NULL) 828 return; 829 device_set_ivars(child, ivar); 830 if (resource_int_value(name, unit, "disabled", &disabled) == 0 831 && disabled != 0) 832 device_disable(child); 833} 834 835static int 836fdc_attach(device_t dev) 837{ 838 struct fdc_data *fdc; 839 int i, error; 840 841 fdc = device_get_softc(dev); 842 error = fdc_alloc_resources(fdc); 843 if (error) { 844 device_printf(dev, "cannot re-aquire resources\n"); 845 return error; 846 } 847 error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq, 848 INTR_TYPE_BIO, fdc_intr, fdc, &fdc->fdc_intr); 849 if (error) { 850 device_printf(dev, "cannot setup interrupt\n"); 851 return error; 852 } 853 fdc->fdcu = device_get_unit(dev); 854 fdc->flags |= FDC_ATTACHED; 855 856 if ((fdc->flags & FDC_NODMA) == 0) { 857 /* Acquire the DMA channel forever, The driver will do the rest */ 858 /* XXX should integrate with rman */ 859 isa_dma_acquire(fdc->dmachan); 860 isa_dmainit(fdc->dmachan, 128 << 3 /* XXX max secsize */); 861 } 862 fdc->state = DEVIDLE; 863 864 /* reset controller, turn motor off, clear fdout mirror reg */ 865 fdout_wr(fdc, ((fdc->fdout = 0))); 866 bioq_init(&fdc->head); 867 868 /* 869 * Probe and attach any children. We should probably detect 870 * devices from the BIOS unless overridden. 871 */ 872 for (i = resource_query_string(-1, "at", device_get_nameunit(dev)); 873 i != -1; 874 i = resource_query_string(i, "at", device_get_nameunit(dev))) 875 fdc_add_child(dev, resource_query_name(i), 876 resource_query_unit(i)); 877 878 return (bus_generic_attach(dev)); 879} 880 881static int 882fdc_print_child(device_t me, device_t child) 883{ 884 int retval = 0; 885 886 retval += bus_print_child_header(me, child); 887 retval += printf(" on %s drive %d\n", device_get_nameunit(me), 888 fdc_get_fdunit(child)); 889 890 return (retval); 891} 892 893static device_method_t fdc_methods[] = { 894 /* Device interface */ 895 DEVMETHOD(device_probe, fdc_probe), 896 DEVMETHOD(device_attach, fdc_attach), 897 DEVMETHOD(device_detach, bus_generic_detach), 898 DEVMETHOD(device_shutdown, bus_generic_shutdown), 899 DEVMETHOD(device_suspend, bus_generic_suspend), 900 DEVMETHOD(device_resume, bus_generic_resume), 901 902 /* Bus interface */ 903 DEVMETHOD(bus_print_child, fdc_print_child), 904 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 905 /* Our children never use any other bus interface methods. */ 906 907 { 0, 0 } 908}; 909 910static driver_t fdc_driver = { 911 "fdc", 912 fdc_methods, 913 sizeof(struct fdc_data) 914}; 915 916DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0); 917 918#if NCARD > 0 919 920static device_method_t fdc_pccard_methods[] = { 921 /* Device interface */ 922 DEVMETHOD(device_probe, fdc_pccard_probe), 923 DEVMETHOD(device_attach, fdc_attach), 924 DEVMETHOD(device_detach, fdc_pccard_detach), 925 DEVMETHOD(device_shutdown, bus_generic_shutdown), 926 DEVMETHOD(device_suspend, bus_generic_suspend), 927 DEVMETHOD(device_resume, bus_generic_resume), 928 929 /* Bus interface */ 930 DEVMETHOD(bus_print_child, fdc_print_child), 931 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 932 /* Our children never use any other bus interface methods. */ 933 934 { 0, 0 } 935}; 936 937static driver_t fdc_pccard_driver = { 938 "fdc", 939 fdc_pccard_methods, 940 sizeof(struct fdc_data) 941}; 942 943DRIVER_MODULE(fdc, pccard, fdc_pccard_driver, fdc_devclass, 0, 0); 944 945#endif /* NCARD > 0 */ 946 947/******************************************************************/ 948/* 949 * devices attached to the controller section. 950 */ 951static int 952fd_probe(device_t dev) 953{ 954 int i; 955 u_int fdt, st0, st3; 956 struct fd_data *fd; 957 struct fdc_data *fdc; 958 fdsu_t fdsu; 959 static int fd_fifo = 0; 960 961 fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */ 962 fd = device_get_softc(dev); 963 fdc = device_get_softc(device_get_parent(dev)); 964 965 bzero(fd, sizeof *fd); 966 fd->dev = dev; 967 fd->fdc = fdc; 968 fd->fdsu = fdsu; 969 fd->fdu = device_get_unit(dev); 970 971#ifdef __i386__ 972 /* look up what bios thinks we have */ 973 switch (fd->fdu) { 974 case 0: 975 if ((fdc->flags & FDC_ISPCMCIA)) 976 fdt = RTCFDT_144M; 977 else if (device_get_flags(fdc->fdc_dev) & FDC_PRETEND_D0) 978 fdt = RTCFDT_144M | RTCFDT_144M_PRETENDED; 979 else 980 fdt = (rtcin(RTC_FDISKETTE) & 0xf0); 981 break; 982 case 1: 983 fdt = ((rtcin(RTC_FDISKETTE) << 4) & 0xf0); 984 break; 985 default: 986 fdt = RTCFDT_NONE; 987 break; 988 } 989#else 990 fdt = RTCFDT_144M; /* XXX probably */ 991#endif 992 993 /* is there a unit? */ 994 if (fdt == RTCFDT_NONE) 995 return (ENXIO); 996 997 /* select it */ 998 set_motor(fdc, fdsu, TURNON); 999 DELAY(1000000); /* 1 sec */ 1000 1001 /* XXX This doesn't work before the first set_motor() */ 1002 if (fd_fifo == 0 && fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN 1003 && (device_get_flags(fdc->fdc_dev) & FDC_NO_FIFO) == 0 1004 && enable_fifo(fdc) == 0) { 1005 device_printf(device_get_parent(dev), 1006 "FIFO enabled, %d bytes threshold\n", fifo_threshold); 1007 } 1008 fd_fifo = 1; 1009 1010 if ((fd_cmd(fdc, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) 1011 && (st3 & NE7_ST3_T0)) { 1012 /* if at track 0, first seek inwards */ 1013 /* seek some steps: */ 1014 fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0); 1015 DELAY(300000); /* ...wait a moment... */ 1016 fd_sense_int(fdc, 0, 0); /* make ctrlr happy */ 1017 } 1018 1019 /* If we're at track 0 first seek inwards. */ 1020 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) { 1021 /* Seek some steps... */ 1022 if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 1023 /* ...wait a moment... */ 1024 DELAY(300000); 1025 /* make ctrlr happy: */ 1026 fd_sense_int(fdc, 0, 0); 1027 } 1028 } 1029 1030 for (i = 0; i < 2; i++) { 1031 /* 1032 * we must recalibrate twice, just in case the 1033 * heads have been beyond cylinder 76, since most 1034 * FDCs still barf when attempting to recalibrate 1035 * more than 77 steps 1036 */ 1037 /* go back to 0: */ 1038 if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1039 /* a second being enough for full stroke seek*/ 1040 DELAY(i == 0 ? 1000000 : 300000); 1041 1042 /* anything responding? */ 1043 if (fd_sense_int(fdc, &st0, 0) == 0 && 1044 (st0 & NE7_ST0_EC) == 0) 1045 break; /* already probed succesfully */ 1046 } 1047 } 1048 1049 set_motor(fdc, fdsu, TURNOFF); 1050 1051 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */ 1052 return (ENXIO); 1053 1054 fd->track = FD_NO_TRACK; 1055 fd->fdc = fdc; 1056 fd->fdsu = fdsu; 1057 fd->options = 0; 1058 callout_handle_init(&fd->toffhandle); 1059 callout_handle_init(&fd->tohandle); 1060 1061 switch (fdt) { 1062 case RTCFDT_12M: 1063 device_set_desc(dev, "1200-KB 5.25\" drive"); 1064 fd->type = FD_1200; 1065 break; 1066 case RTCFDT_144M | RTCFDT_144M_PRETENDED: 1067 device_set_desc(dev, "config-pretended 1440-MB 3.5\" drive"); 1068 fdt = RTCFDT_144M; 1069 fd->type = FD_1440; 1070 case RTCFDT_144M: 1071 device_set_desc(dev, "1440-KB 3.5\" drive"); 1072 fd->type = FD_1440; 1073 break; 1074 case RTCFDT_288M: 1075 case RTCFDT_288M_1: 1076 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 1077 fd->type = FD_1440; 1078 break; 1079 case RTCFDT_360K: 1080 device_set_desc(dev, "360-KB 5.25\" drive"); 1081 fd->type = FD_360; 1082 break; 1083 case RTCFDT_720K: 1084 printf("720-KB 3.5\" drive"); 1085 fd->type = FD_720; 1086 break; 1087 default: 1088 return (ENXIO); 1089 } 1090 return (0); 1091} 1092 1093static int 1094fd_attach(device_t dev) 1095{ 1096 struct fd_data *fd; 1097#if 0 1098 int i; 1099 int mynor; 1100 int typemynor; 1101 int typesize; 1102#endif 1103 1104 fd = device_get_softc(dev); 1105 1106 cdevsw_add(&fd_cdevsw); /* XXX */ 1107 make_dev(&fd_cdevsw, (fd->fdu << 6), 1108 UID_ROOT, GID_OPERATOR, 0640, "rfd%d", fd->fdu); 1109 1110#if 0 1111 /* Other make_dev() go here. */ 1112#endif 1113 1114 /* 1115 * Export the drive to the devstat interface. 1116 */ 1117 devstat_add_entry(&fd->device_stats, device_get_name(dev), 1118 device_get_unit(dev), 512, DEVSTAT_NO_ORDERED_TAGS, 1119 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER, 1120 DEVSTAT_PRIORITY_FD); 1121 return (0); 1122} 1123 1124static int 1125fd_detach(device_t dev) 1126{ 1127 struct fd_data *fd; 1128 1129 fd = device_get_softc(dev); 1130 untimeout(fd_turnoff, fd, fd->toffhandle); 1131 1132 return (0); 1133} 1134 1135static device_method_t fd_methods[] = { 1136 /* Device interface */ 1137 DEVMETHOD(device_probe, fd_probe), 1138 DEVMETHOD(device_attach, fd_attach), 1139 DEVMETHOD(device_detach, fd_detach), 1140 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1141 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 1142 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 1143 1144 { 0, 0 } 1145}; 1146 1147static driver_t fd_driver = { 1148 "fd", 1149 fd_methods, 1150 sizeof(struct fd_data) 1151}; 1152 1153DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, 0, 0); 1154 1155/****************************************************************************/ 1156/* motor control stuff */ 1157/* remember to not deselect the drive we're working on */ 1158/****************************************************************************/ 1159static void 1160set_motor(struct fdc_data *fdc, int fdsu, int turnon) 1161{ 1162 int fdout = fdc->fdout; 1163 int needspecify = 0; 1164 1165 if(turnon) { 1166 fdout &= ~FDO_FDSEL; 1167 fdout |= (FDO_MOEN0 << fdsu) + fdsu; 1168 } else 1169 fdout &= ~(FDO_MOEN0 << fdsu); 1170 1171 if(!turnon 1172 && (fdout & (FDO_MOEN0+FDO_MOEN1+FDO_MOEN2+FDO_MOEN3)) == 0) 1173 /* gonna turn off the last drive, put FDC to bed */ 1174 fdout &= ~ (FDO_FRST|FDO_FDMAEN); 1175 else { 1176 /* make sure controller is selected and specified */ 1177 if((fdout & (FDO_FRST|FDO_FDMAEN)) == 0) 1178 needspecify = 1; 1179 fdout |= (FDO_FRST|FDO_FDMAEN); 1180 } 1181 1182 fdout_wr(fdc, fdout); 1183 fdc->fdout = fdout; 1184 TRACE1("[0x%x->FDOUT]", fdout); 1185 1186 if (needspecify) { 1187 /* 1188 * XXX 1189 * special case: since we have just woken up the FDC 1190 * from its sleep, we silently assume the command will 1191 * be accepted, and do not test for a timeout 1192 */ 1193 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1194 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1195 0); 1196 if (fdc->flags & FDC_HAS_FIFO) 1197 (void) enable_fifo(fdc); 1198 } 1199} 1200 1201static void 1202fd_turnoff(void *xfd) 1203{ 1204 int s; 1205 fd_p fd = xfd; 1206 1207 TRACE1("[fd%d: turnoff]", fd->fdu); 1208 1209 s = splbio(); 1210 /* 1211 * Don't turn off the motor yet if the drive is active. 1212 * 1213 * If we got here, this could only mean we missed an interrupt. 1214 * This can e. g. happen on the Y-E Date PCMCIA floppy controller 1215 * after a controller reset. Just schedule a pseudo-interrupt 1216 * so the state machine gets re-entered. 1217 */ 1218 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) { 1219 fdc_intr(fd->fdc); 1220 splx(s); 1221 return; 1222 } 1223 1224 fd->flags &= ~FD_MOTOR; 1225 set_motor(fd->fdc, fd->fdsu, TURNOFF); 1226 splx(s); 1227} 1228 1229static void 1230fd_motor_on(void *xfd) 1231{ 1232 int s; 1233 fd_p fd = xfd; 1234 1235 s = splbio(); 1236 fd->flags &= ~FD_MOTOR_WAIT; 1237 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT)) 1238 { 1239 fdc_intr(fd->fdc); 1240 } 1241 splx(s); 1242} 1243 1244static void 1245fd_turnon(fd_p fd) 1246{ 1247 if(!(fd->flags & FD_MOTOR)) 1248 { 1249 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT); 1250 set_motor(fd->fdc, fd->fdsu, TURNON); 1251 timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */ 1252 } 1253} 1254 1255static void 1256fdc_reset(fdc_p fdc) 1257{ 1258 /* Try a reset, keep motor on */ 1259 fdout_wr(fdc, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1260 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1261 DELAY(100); 1262 /* enable FDC, but defer interrupts a moment */ 1263 fdout_wr(fdc, fdc->fdout & ~FDO_FDMAEN); 1264 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN); 1265 DELAY(100); 1266 fdout_wr(fdc, fdc->fdout); 1267 TRACE1("[0x%x->FDOUT]", fdc->fdout); 1268 1269 /* XXX after a reset, silently believe the FDC will accept commands */ 1270 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1271 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1272 0); 1273 if (fdc->flags & FDC_HAS_FIFO) 1274 (void) enable_fifo(fdc); 1275} 1276 1277/****************************************************************************/ 1278/* fdc in/out */ 1279/****************************************************************************/ 1280int 1281in_fdc(struct fdc_data *fdc) 1282{ 1283 int i, j = 100000; 1284 while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) 1285 != (NE7_DIO|NE7_RQM) && j-- > 0) 1286 if (i == NE7_RQM) 1287 return fdc_err(fdc, "ready for output in input\n"); 1288 if (j <= 0) 1289 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1290#ifdef FDC_DEBUG 1291 i = fddata_rd(fdc); 1292 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1293 return(i); 1294#else /* !FDC_DEBUG */ 1295 return fddata_rd(fdc); 1296#endif /* FDC_DEBUG */ 1297} 1298 1299/* 1300 * fd_in: Like in_fdc, but allows you to see if it worked. 1301 */ 1302static int 1303fd_in(struct fdc_data *fdc, int *ptr) 1304{ 1305 int i, j = 100000; 1306 while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) 1307 != (NE7_DIO|NE7_RQM) && j-- > 0) 1308 if (i == NE7_RQM) 1309 return fdc_err(fdc, "ready for output in input\n"); 1310 if (j <= 0) 1311 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1312#ifdef FDC_DEBUG 1313 i = fddata_rd(fdc); 1314 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1315 *ptr = i; 1316 return 0; 1317#else /* !FDC_DEBUG */ 1318 i = fddata_rd(fdc); 1319 if (ptr) 1320 *ptr = i; 1321 return 0; 1322#endif /* FDC_DEBUG */ 1323} 1324 1325int 1326out_fdc(struct fdc_data *fdc, int x) 1327{ 1328 int i; 1329 1330 /* Check that the direction bit is set */ 1331 i = 100000; 1332 while ((fdsts_rd(fdc) & NE7_DIO) && i-- > 0); 1333 if (i <= 0) return fdc_err(fdc, "direction bit not set\n"); 1334 1335 /* Check that the floppy controller is ready for a command */ 1336 i = 100000; 1337 while ((fdsts_rd(fdc) & NE7_RQM) == 0 && i-- > 0); 1338 if (i <= 0) 1339 return fdc_err(fdc, bootverbose? "output ready timeout\n": 0); 1340 1341 /* Send the command and return */ 1342 fddata_wr(fdc, x); 1343 TRACE1("[0x%x->FDDATA]", x); 1344 return (0); 1345} 1346 1347/****************************************************************************/ 1348/* fdopen/fdclose */ 1349/****************************************************************************/ 1350int 1351Fdopen(dev_t dev, int flags, int mode, struct proc *p) 1352{ 1353 fdu_t fdu = FDUNIT(minor(dev)); 1354 int type = FDTYPE(minor(dev)); 1355 fd_p fd; 1356 fdc_p fdc; 1357 1358 /* check bounds */ 1359 if ((fd = devclass_get_softc(fd_devclass, fdu)) == 0) 1360 return (ENXIO); 1361 fdc = fd->fdc; 1362 if ((fdc == NULL) || (fd->type == NO_TYPE)) 1363 return (ENXIO); 1364 if (type > NUMDENS) 1365 return (ENXIO); 1366 if (type == 0) 1367 type = fd->type; 1368 else { 1369 /* 1370 * For each type of basic drive, make sure we are trying 1371 * to open a type it can do, 1372 */ 1373 if (type != fd->type) { 1374 switch (fd->type) { 1375 case FD_360: 1376 return (ENXIO); 1377 case FD_720: 1378 if ( type != FD_820 1379 && type != FD_800 1380 && type != FD_640 1381 ) 1382 return (ENXIO); 1383 break; 1384 case FD_1200: 1385 switch (type) { 1386 case FD_1480: 1387 type = FD_1480in5_25; 1388 break; 1389 case FD_1440: 1390 type = FD_1440in5_25; 1391 break; 1392 case FD_1232: 1393 break; 1394 case FD_820: 1395 type = FD_820in5_25; 1396 break; 1397 case FD_800: 1398 type = FD_800in5_25; 1399 break; 1400 case FD_720: 1401 type = FD_720in5_25; 1402 break; 1403 case FD_640: 1404 type = FD_640in5_25; 1405 break; 1406 case FD_360: 1407 type = FD_360in5_25; 1408 break; 1409 default: 1410 return(ENXIO); 1411 } 1412 break; 1413 case FD_1440: 1414 if ( type != FD_1720 1415 && type != FD_1480 1416 && type != FD_1200 1417 && type != FD_820 1418 && type != FD_800 1419 && type != FD_720 1420 && type != FD_640 1421 ) 1422 return(ENXIO); 1423 break; 1424 } 1425 } 1426 } 1427 fd->ft = fd_types + type - 1; 1428 fd->flags |= FD_OPEN; 1429 1430 return 0; 1431} 1432 1433int 1434fdclose(dev_t dev, int flags, int mode, struct proc *p) 1435{ 1436 fdu_t fdu = FDUNIT(minor(dev)); 1437 struct fd_data *fd; 1438 1439 fd = devclass_get_softc(fd_devclass, fdu); 1440 fd->flags &= ~FD_OPEN; 1441 fd->options &= ~FDOPT_NORETRY; 1442 1443 return (0); 1444} 1445 1446/****************************************************************************/ 1447/* fdstrategy */ 1448/****************************************************************************/ 1449void 1450fdstrategy(struct bio *bp) 1451{ 1452 unsigned nblocks, blknum, cando; 1453 int s; 1454 fdu_t fdu; 1455 fdc_p fdc; 1456 fd_p fd; 1457 size_t fdblk; 1458 1459 fdu = FDUNIT(minor(bp->bio_dev)); 1460 fd = devclass_get_softc(fd_devclass, fdu); 1461 if (fd == 0) 1462 panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)", 1463 (u_long)major(bp->bio_dev), (u_long)minor(bp->bio_dev)); 1464 fdc = fd->fdc; 1465 if (fd->type == NO_TYPE) { 1466 bp->bio_error = ENXIO; 1467 bp->bio_flags |= BIO_ERROR; 1468 goto bad; 1469 }; 1470 1471 fdblk = 128 << (fd->ft->secsize); 1472 if (!(bp->bio_cmd & BIO_FORMAT)) { 1473 if (bp->bio_blkno < 0) { 1474 printf( 1475 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n", 1476 fdu, (u_long)bp->bio_blkno, bp->bio_bcount); 1477 bp->bio_error = EINVAL; 1478 bp->bio_flags |= BIO_ERROR; 1479 goto bad; 1480 } 1481 if ((bp->bio_bcount % fdblk) != 0) { 1482 bp->bio_error = EINVAL; 1483 bp->bio_flags |= BIO_ERROR; 1484 goto bad; 1485 } 1486 } 1487 1488 /* 1489 * Set up block calculations. 1490 */ 1491 if (bp->bio_blkno > 20000000) { 1492 /* 1493 * Reject unreasonably high block number, prevent the 1494 * multiplication below from overflowing. 1495 */ 1496 bp->bio_error = EINVAL; 1497 bp->bio_flags |= BIO_ERROR; 1498 goto bad; 1499 } 1500 blknum = (unsigned) bp->bio_blkno * DEV_BSIZE/fdblk; 1501 nblocks = fd->ft->size; 1502 bp->bio_resid = 0; 1503 if (blknum + (bp->bio_bcount / fdblk) > nblocks) { 1504 if (blknum <= nblocks) { 1505 cando = (nblocks - blknum) * fdblk; 1506 bp->bio_resid = bp->bio_bcount - cando; 1507 if (cando == 0) 1508 goto bad; /* not actually bad but EOF */ 1509 } else { 1510 bp->bio_error = EINVAL; 1511 bp->bio_flags |= BIO_ERROR; 1512 goto bad; 1513 } 1514 } 1515 bp->bio_pblkno = bp->bio_blkno; 1516 s = splbio(); 1517 bioqdisksort(&fdc->head, bp); 1518 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */ 1519 1520 /* Tell devstat we are starting on the transaction */ 1521 devstat_start_transaction(&fd->device_stats); 1522 device_busy(fd->dev); 1523 1524 fdstart(fdc); 1525 splx(s); 1526 return; 1527 1528bad: 1529 biodone(bp); 1530} 1531 1532/***************************************************************\ 1533* fdstart * 1534* We have just queued something.. if the controller is not busy * 1535* then simulate the case where it has just finished a command * 1536* So that it (the interrupt routine) looks on the queue for more* 1537* work to do and picks up what we just added. * 1538* If the controller is already busy, we need do nothing, as it * 1539* will pick up our work when the present work completes * 1540\***************************************************************/ 1541static void 1542fdstart(struct fdc_data *fdc) 1543{ 1544 int s; 1545 1546 s = splbio(); 1547 if(fdc->state == DEVIDLE) 1548 { 1549 fdc_intr(fdc); 1550 } 1551 splx(s); 1552} 1553 1554static void 1555fd_iotimeout(void *xfdc) 1556{ 1557 fdc_p fdc; 1558 int s; 1559 1560 fdc = xfdc; 1561 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); 1562 1563 /* 1564 * Due to IBM's brain-dead design, the FDC has a faked ready 1565 * signal, hardwired to ready == true. Thus, any command 1566 * issued if there's no diskette in the drive will _never_ 1567 * complete, and must be aborted by resetting the FDC. 1568 * Many thanks, Big Blue! 1569 * The FDC must not be reset directly, since that would 1570 * interfere with the state machine. Instead, pretend that 1571 * the command completed but was invalid. The state machine 1572 * will reset the FDC and retry once. 1573 */ 1574 s = splbio(); 1575 fdc->status[0] = NE7_ST0_IC_IV; 1576 fdc->flags &= ~FDC_STAT_VALID; 1577 fdc->state = IOTIMEDOUT; 1578 fdc_intr(fdc); 1579 splx(s); 1580} 1581 1582/* just ensure it has the right spl */ 1583static void 1584fd_pseudointr(void *xfdc) 1585{ 1586 int s; 1587 1588 s = splbio(); 1589 fdc_intr(xfdc); 1590 splx(s); 1591} 1592 1593/***********************************************************************\ 1594* fdintr * 1595* keep calling the state machine until it returns a 0 * 1596* ALWAYS called at SPLBIO * 1597\***********************************************************************/ 1598static void 1599fdc_intr(void *xfdc) 1600{ 1601 fdc_p fdc = xfdc; 1602 while(fdstate(fdc)) 1603 ; 1604} 1605 1606/* 1607 * magic pseudo-DMA initialization for YE FDC. Sets count and 1608 * direction 1609 */ 1610#define SET_BCDR(fdc,wr,cnt,port) \ 1611 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port, \ 1612 ((cnt)-1) & 0xff); \ 1613 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port + 1, \ 1614 ((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))); 1615 1616/* 1617 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy 1618 */ 1619static int fdcpio(fdc_p fdc, long flags, caddr_t addr, u_int count) 1620{ 1621 u_char *cptr = (u_char *)addr; 1622 1623 if (flags == BIO_READ) { 1624 if (fdc->state != PIOREAD) { 1625 fdc->state = PIOREAD; 1626 return(0); 1627 }; 1628 SET_BCDR(fdc, 0, count, 0); 1629 bus_space_read_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1630 FDC_YE_DATAPORT, cptr, count); 1631 } else { 1632 bus_space_write_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1633 FDC_YE_DATAPORT, cptr, count); 1634 SET_BCDR(fdc, 0, count, 0); 1635 }; 1636 return(1); 1637} 1638 1639/***********************************************************************\ 1640* The controller state machine. * 1641* if it returns a non zero value, it should be called again immediatly * 1642\***********************************************************************/ 1643static int 1644fdstate(fdc_p fdc) 1645{ 1646 int read, format, head, i, sec = 0, sectrac, st0, cyl, st3, idf; 1647 unsigned blknum = 0, b_cylinder = 0; 1648 fdu_t fdu = fdc->fdu; 1649 fd_p fd; 1650 register struct bio *bp; 1651 struct fd_formb *finfo = NULL; 1652 size_t fdblk; 1653 1654 bp = fdc->bp; 1655 if (bp == NULL) { 1656 bp = bioq_first(&fdc->head); 1657 if (bp != NULL) { 1658 bioq_remove(&fdc->head, bp); 1659 fdc->bp = bp; 1660 } 1661 } 1662 if (bp == NULL) { 1663 /***********************************************\ 1664 * nothing left for this controller to do * 1665 * Force into the IDLE state, * 1666 \***********************************************/ 1667 fdc->state = DEVIDLE; 1668 if (fdc->fd) { 1669 device_printf(fdc->fdc_dev, 1670 "unexpected valid fd pointer\n"); 1671 fdc->fd = (fd_p) 0; 1672 fdc->fdu = -1; 1673 } 1674 TRACE1("[fdc%d IDLE]", fdc->fdcu); 1675 return (0); 1676 } 1677 fdu = FDUNIT(minor(bp->bio_dev)); 1678 fd = devclass_get_softc(fd_devclass, fdu); 1679 fdblk = 128 << fd->ft->secsize; 1680 if (fdc->fd && (fd != fdc->fd)) 1681 device_printf(fd->dev, "confused fd pointers\n"); 1682 read = bp->bio_cmd == BIO_READ; 1683 if (read) 1684 idf = ISADMA_READ; 1685 else 1686 idf = ISADMA_WRITE; 1687 format = bp->bio_cmd & BIO_FORMAT; 1688 if (format) { 1689 finfo = (struct fd_formb *)bp->bio_data; 1690 fd->skip = (char *)&(finfo->fd_formb_cylno(0)) 1691 - (char *)finfo; 1692 } 1693 if (fdc->state == DOSEEK || fdc->state == SEEKCOMPLETE) { 1694 blknum = (unsigned) bp->bio_pblkno * DEV_BSIZE/fdblk + 1695 fd->skip/fdblk; 1696 b_cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 1697 } 1698 TRACE1("fd%d", fdu); 1699 TRACE1("[%s]", fdstates[fdc->state]); 1700 TRACE1("(0x%x)", fd->flags); 1701 untimeout(fd_turnoff, fd, fd->toffhandle); 1702 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 1703 switch (fdc->state) 1704 { 1705 case DEVIDLE: 1706 case FINDWORK: /* we have found new work */ 1707 fdc->retry = 0; 1708 fd->skip = 0; 1709 fdc->fd = fd; 1710 fdc->fdu = fdu; 1711 fdc->fdctl_wr(fdc, fd->ft->trans); 1712 TRACE1("[0x%x->FDCTL]", fd->ft->trans); 1713 /*******************************************************\ 1714 * If the next drive has a motor startup pending, then * 1715 * it will start up in its own good time * 1716 \*******************************************************/ 1717 if(fd->flags & FD_MOTOR_WAIT) { 1718 fdc->state = MOTORWAIT; 1719 return (0); /* come back later */ 1720 } 1721 /*******************************************************\ 1722 * Maybe if it's not starting, it SHOULD be starting * 1723 \*******************************************************/ 1724 if (!(fd->flags & FD_MOTOR)) 1725 { 1726 fdc->state = MOTORWAIT; 1727 fd_turnon(fd); 1728 return (0); 1729 } 1730 else /* at least make sure we are selected */ 1731 { 1732 set_motor(fdc, fd->fdsu, TURNON); 1733 } 1734 if (fdc->flags & FDC_NEEDS_RESET) { 1735 fdc->state = RESETCTLR; 1736 fdc->flags &= ~FDC_NEEDS_RESET; 1737 } else 1738 fdc->state = DOSEEK; 1739 break; 1740 case DOSEEK: 1741 if (b_cylinder == (unsigned)fd->track) 1742 { 1743 fdc->state = SEEKCOMPLETE; 1744 break; 1745 } 1746 if (fd_cmd(fdc, 3, NE7CMD_SEEK, 1747 fd->fdsu, b_cylinder * fd->ft->steptrac, 1748 0)) 1749 { 1750 /* 1751 * seek command not accepted, looks like 1752 * the FDC went off to the Saints... 1753 */ 1754 fdc->retry = 6; /* try a reset */ 1755 return(retrier(fdc)); 1756 } 1757 fd->track = FD_NO_TRACK; 1758 fdc->state = SEEKWAIT; 1759 return(0); /* will return later */ 1760 case SEEKWAIT: 1761 /* allow heads to settle */ 1762 timeout(fd_pseudointr, fdc, hz / 16); 1763 fdc->state = SEEKCOMPLETE; 1764 return(0); /* will return later */ 1765 case SEEKCOMPLETE : /* SEEK DONE, START DMA */ 1766 /* Make sure seek really happened*/ 1767 if(fd->track == FD_NO_TRACK) { 1768 int descyl = b_cylinder * fd->ft->steptrac; 1769 do { 1770 /* 1771 * This might be a "ready changed" interrupt, 1772 * which cannot really happen since the 1773 * RDY pin is hardwired to + 5 volts. This 1774 * generally indicates a "bouncing" intr 1775 * line, so do one of the following: 1776 * 1777 * When running on an enhanced FDC that is 1778 * known to not go stuck after responding 1779 * with INVALID, fetch all interrupt states 1780 * until seeing either an INVALID or a 1781 * real interrupt condition. 1782 * 1783 * When running on a dumb old NE765, give 1784 * up immediately. The controller will 1785 * provide up to four dummy RC interrupt 1786 * conditions right after reset (for the 1787 * corresponding four drives), so this is 1788 * our only chance to get notice that it 1789 * was not the FDC that caused the interrupt. 1790 */ 1791 if (fd_sense_int(fdc, &st0, &cyl) 1792 == FD_NOT_VALID) 1793 return 0; 1794 if(fdc->fdct == FDC_NE765 1795 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 1796 return 0; /* hope for a real intr */ 1797 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 1798 1799 if (0 == descyl) { 1800 int failed = 0; 1801 /* 1802 * seek to cyl 0 requested; make sure we are 1803 * really there 1804 */ 1805 if (fd_sense_drive_status(fdc, &st3)) 1806 failed = 1; 1807 if ((st3 & NE7_ST3_T0) == 0) { 1808 printf( 1809 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", 1810 fdu, st3, NE7_ST3BITS); 1811 failed = 1; 1812 } 1813 1814 if (failed) { 1815 if(fdc->retry < 3) 1816 fdc->retry = 3; 1817 return (retrier(fdc)); 1818 } 1819 } 1820 1821 if (cyl != descyl) { 1822 printf( 1823 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", 1824 fdu, descyl, cyl, st0); 1825 if (fdc->retry < 3) 1826 fdc->retry = 3; 1827 return (retrier(fdc)); 1828 } 1829 } 1830 1831 fd->track = b_cylinder; 1832 if (!(fdc->flags & FDC_NODMA)) 1833 isa_dmastart(idf, bp->bio_data+fd->skip, 1834 format ? bp->bio_bcount : fdblk, fdc->dmachan); 1835 sectrac = fd->ft->sectrac; 1836 sec = blknum % (sectrac * fd->ft->heads); 1837 head = sec / sectrac; 1838 sec = sec % sectrac + 1; 1839 fd->hddrv = ((head&1)<<2)+fdu; 1840 1841 if(format || !read) 1842 { 1843 /* make sure the drive is writable */ 1844 if(fd_sense_drive_status(fdc, &st3) != 0) 1845 { 1846 /* stuck controller? */ 1847 if (!(fdc->flags & FDC_NODMA)) 1848 isa_dmadone(idf, 1849 bp->bio_data + fd->skip, 1850 format ? bp->bio_bcount : fdblk, 1851 fdc->dmachan); 1852 fdc->retry = 6; /* reset the beast */ 1853 return (retrier(fdc)); 1854 } 1855 if(st3 & NE7_ST3_WP) 1856 { 1857 /* 1858 * XXX YES! this is ugly. 1859 * in order to force the current operation 1860 * to fail, we will have to fake an FDC 1861 * error - all error handling is done 1862 * by the retrier() 1863 */ 1864 fdc->status[0] = NE7_ST0_IC_AT; 1865 fdc->status[1] = NE7_ST1_NW; 1866 fdc->status[2] = 0; 1867 fdc->status[3] = fd->track; 1868 fdc->status[4] = head; 1869 fdc->status[5] = sec; 1870 fdc->retry = 8; /* break out immediately */ 1871 fdc->state = IOTIMEDOUT; /* not really... */ 1872 return (1); 1873 } 1874 } 1875 1876 if (format) { 1877 if (fdc->flags & FDC_NODMA) { 1878 /* 1879 * This seems to be necessary for 1880 * whatever obscure reason; if we omit 1881 * it, we end up filling the sector ID 1882 * fields of the newly formatted track 1883 * entirely with garbage, causing 1884 * `wrong cylinder' errors all over 1885 * the place when trying to read them 1886 * back. 1887 * 1888 * Umpf. 1889 */ 1890 SET_BCDR(fdc, 1, bp->bio_bcount, 0); 1891 1892 (void)fdcpio(fdc,bp->bio_cmd, 1893 bp->bio_data+fd->skip, 1894 bp->bio_bcount); 1895 1896 } 1897 /* formatting */ 1898 if(fd_cmd(fdc, 6, NE7CMD_FORMAT, head << 2 | fdu, 1899 finfo->fd_formb_secshift, 1900 finfo->fd_formb_nsecs, 1901 finfo->fd_formb_gaplen, 1902 finfo->fd_formb_fillbyte, 0)) { 1903 /* controller fell over */ 1904 if (!(fdc->flags & FDC_NODMA)) 1905 isa_dmadone(idf, 1906 bp->bio_data + fd->skip, 1907 format ? bp->bio_bcount : fdblk, 1908 fdc->dmachan); 1909 fdc->retry = 6; 1910 return (retrier(fdc)); 1911 } 1912 } else { 1913 if (fdc->flags & FDC_NODMA) { 1914 /* 1915 * this seems to be necessary even when 1916 * reading data 1917 */ 1918 SET_BCDR(fdc, 1, fdblk, 0); 1919 1920 /* 1921 * perform the write pseudo-DMA before 1922 * the WRITE command is sent 1923 */ 1924 if (!read) 1925 (void)fdcpio(fdc,bp->bio_cmd, 1926 bp->bio_data+fd->skip, 1927 fdblk); 1928 } 1929 if (fd_cmd(fdc, 9, 1930 (read ? NE7CMD_READ : NE7CMD_WRITE), 1931 head << 2 | fdu, /* head & unit */ 1932 fd->track, /* track */ 1933 head, 1934 sec, /* sector + 1 */ 1935 fd->ft->secsize, /* sector size */ 1936 sectrac, /* sectors/track */ 1937 fd->ft->gap, /* gap size */ 1938 fd->ft->datalen, /* data length */ 1939 0)) { 1940 /* the beast is sleeping again */ 1941 if (!(fdc->flags & FDC_NODMA)) 1942 isa_dmadone(idf, 1943 bp->bio_data + fd->skip, 1944 format ? bp->bio_bcount : fdblk, 1945 fdc->dmachan); 1946 fdc->retry = 6; 1947 return (retrier(fdc)); 1948 } 1949 } 1950 if (fdc->flags & FDC_NODMA) 1951 /* 1952 * if this is a read, then simply await interrupt 1953 * before performing PIO 1954 */ 1955 if (read && !fdcpio(fdc,bp->bio_cmd, 1956 bp->bio_data+fd->skip,fdblk)) { 1957 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 1958 return(0); /* will return later */ 1959 }; 1960 1961 /* 1962 * write (or format) operation will fall through and 1963 * await completion interrupt 1964 */ 1965 fdc->state = IOCOMPLETE; 1966 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 1967 return (0); /* will return later */ 1968 case PIOREAD: 1969 /* 1970 * actually perform the PIO read. The IOCOMPLETE case 1971 * removes the timeout for us. 1972 */ 1973 (void)fdcpio(fdc,bp->bio_cmd,bp->bio_data+fd->skip,fdblk); 1974 fdc->state = IOCOMPLETE; 1975 /* FALLTHROUGH */ 1976 case IOCOMPLETE: /* IO DONE, post-analyze */ 1977 untimeout(fd_iotimeout, fdc, fd->tohandle); 1978 1979 if (fd_read_status(fdc, fd->fdsu)) { 1980 if (!(fdc->flags & FDC_NODMA)) 1981 isa_dmadone(idf, bp->bio_data + fd->skip, 1982 format ? bp->bio_bcount : fdblk, 1983 fdc->dmachan); 1984 if (fdc->retry < 6) 1985 fdc->retry = 6; /* force a reset */ 1986 return (retrier(fdc)); 1987 } 1988 1989 fdc->state = IOTIMEDOUT; 1990 1991 /* FALLTHROUGH */ 1992 1993 case IOTIMEDOUT: 1994 if (!(fdc->flags & FDC_NODMA)) 1995 isa_dmadone(idf, bp->bio_data + fd->skip, 1996 format ? bp->bio_bcount : fdblk, fdc->dmachan); 1997 if (fdc->status[0] & NE7_ST0_IC) { 1998 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 1999 && fdc->status[1] & NE7_ST1_OR) { 2000 /* 2001 * DMA overrun. Someone hogged the bus 2002 * and didn't release it in time for the 2003 * next FDC transfer. 2004 * Just restart it, don't increment retry 2005 * count. (vak) 2006 */ 2007 fdc->state = SEEKCOMPLETE; 2008 return (1); 2009 } 2010 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV 2011 && fdc->retry < 6) 2012 fdc->retry = 6; /* force a reset */ 2013 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2014 && fdc->status[2] & NE7_ST2_WC 2015 && fdc->retry < 3) 2016 fdc->retry = 3; /* force recalibrate */ 2017 return (retrier(fdc)); 2018 } 2019 /* All OK */ 2020 fd->skip += fdblk; 2021 if (!format && fd->skip < bp->bio_bcount - bp->bio_resid) { 2022 /* set up next transfer */ 2023 fdc->state = DOSEEK; 2024 } else { 2025 /* ALL DONE */ 2026 fd->skip = 0; 2027 fdc->bp = NULL; 2028 device_unbusy(fd->dev); 2029 devstat_end_transaction_bio(&fd->device_stats, bp); 2030 biodone(bp); 2031 fdc->fd = (fd_p) 0; 2032 fdc->fdu = -1; 2033 fdc->state = FINDWORK; 2034 } 2035 return (1); 2036 case RESETCTLR: 2037 fdc_reset(fdc); 2038 fdc->retry++; 2039 fdc->state = RESETCOMPLETE; 2040 return (0); 2041 case RESETCOMPLETE: 2042 /* 2043 * Discard all the results from the reset so that they 2044 * can't cause an unexpected interrupt later. 2045 */ 2046 for (i = 0; i < 4; i++) 2047 (void)fd_sense_int(fdc, &st0, &cyl); 2048 fdc->state = STARTRECAL; 2049 /* Fall through. */ 2050 case STARTRECAL: 2051 if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) { 2052 /* arrgl */ 2053 fdc->retry = 6; 2054 return (retrier(fdc)); 2055 } 2056 fdc->state = RECALWAIT; 2057 return (0); /* will return later */ 2058 case RECALWAIT: 2059 /* allow heads to settle */ 2060 timeout(fd_pseudointr, fdc, hz / 8); 2061 fdc->state = RECALCOMPLETE; 2062 return (0); /* will return later */ 2063 case RECALCOMPLETE: 2064 do { 2065 /* 2066 * See SEEKCOMPLETE for a comment on this: 2067 */ 2068 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 2069 return 0; 2070 if(fdc->fdct == FDC_NE765 2071 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 2072 return 0; /* hope for a real intr */ 2073 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 2074 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0) 2075 { 2076 if(fdc->retry > 3) 2077 /* 2078 * a recalibrate from beyond cylinder 77 2079 * will "fail" due to the FDC limitations; 2080 * since people used to complain much about 2081 * the failure message, try not logging 2082 * this one if it seems to be the first 2083 * time in a line 2084 */ 2085 printf("fd%d: recal failed ST0 %b cyl %d\n", 2086 fdu, st0, NE7_ST0BITS, cyl); 2087 if(fdc->retry < 3) fdc->retry = 3; 2088 return (retrier(fdc)); 2089 } 2090 fd->track = 0; 2091 /* Seek (probably) necessary */ 2092 fdc->state = DOSEEK; 2093 return (1); /* will return immediatly */ 2094 case MOTORWAIT: 2095 if(fd->flags & FD_MOTOR_WAIT) 2096 { 2097 return (0); /* time's not up yet */ 2098 } 2099 if (fdc->flags & FDC_NEEDS_RESET) { 2100 fdc->state = RESETCTLR; 2101 fdc->flags &= ~FDC_NEEDS_RESET; 2102 } else { 2103 /* 2104 * If all motors were off, then the controller was 2105 * reset, so it has lost track of the current 2106 * cylinder. Recalibrate to handle this case. 2107 * But first, discard the results of the reset. 2108 */ 2109 fdc->state = RESETCOMPLETE; 2110 } 2111 return (1); /* will return immediatly */ 2112 default: 2113 device_printf(fdc->fdc_dev, "unexpected FD int->"); 2114 if (fd_read_status(fdc, fd->fdsu) == 0) 2115 printf("FDC status :%x %x %x %x %x %x %x ", 2116 fdc->status[0], 2117 fdc->status[1], 2118 fdc->status[2], 2119 fdc->status[3], 2120 fdc->status[4], 2121 fdc->status[5], 2122 fdc->status[6] ); 2123 else 2124 printf("No status available "); 2125 if (fd_sense_int(fdc, &st0, &cyl) != 0) 2126 { 2127 printf("[controller is dead now]\n"); 2128 return (0); 2129 } 2130 printf("ST0 = %x, PCN = %x\n", st0, cyl); 2131 return (0); 2132 } 2133 /*XXX confusing: some branches return immediately, others end up here*/ 2134 return (1); /* Come back immediatly to new state */ 2135} 2136 2137static int 2138retrier(struct fdc_data *fdc) 2139{ 2140 struct bio *bp; 2141 struct fd_data *fd; 2142 int fdu; 2143 2144 bp = fdc->bp; 2145 2146 /* XXX shouldn't this be cached somewhere? */ 2147 fdu = FDUNIT(minor(bp->bio_dev)); 2148 fd = devclass_get_softc(fd_devclass, fdu); 2149 if (fd->options & FDOPT_NORETRY) 2150 goto fail; 2151 2152 switch (fdc->retry) { 2153 case 0: case 1: case 2: 2154 fdc->state = SEEKCOMPLETE; 2155 break; 2156 case 3: case 4: case 5: 2157 fdc->state = STARTRECAL; 2158 break; 2159 case 6: 2160 fdc->state = RESETCTLR; 2161 break; 2162 case 7: 2163 break; 2164 default: 2165 fail: 2166 { 2167 dev_t sav_bio_dev = bp->bio_dev; 2168 /* Trick diskerr */ 2169 bp->bio_dev = makedev(major(bp->bio_dev), 2170 (FDUNIT(minor(bp->bio_dev))<<3)|RAW_PART); 2171 diskerr(bp, "hard error", LOG_PRINTF, 2172 fdc->fd->skip / DEV_BSIZE, 2173 (struct disklabel *)NULL); 2174 bp->bio_dev = sav_bio_dev; 2175 if (fdc->flags & FDC_STAT_VALID) 2176 { 2177 printf( 2178 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n", 2179 fdc->status[0], NE7_ST0BITS, 2180 fdc->status[1], NE7_ST1BITS, 2181 fdc->status[2], NE7_ST2BITS, 2182 fdc->status[3], fdc->status[4], 2183 fdc->status[5]); 2184 } 2185 else 2186 printf(" (No status)\n"); 2187 } 2188 bp->bio_flags |= BIO_ERROR; 2189 bp->bio_error = EIO; 2190 bp->bio_resid += bp->bio_bcount - fdc->fd->skip; 2191 fdc->bp = NULL; 2192 fdc->fd->skip = 0; 2193 device_unbusy(fd->dev); 2194 devstat_end_transaction_bio(&fdc->fd->device_stats, bp); 2195 biodone(bp); 2196 fdc->state = FINDWORK; 2197 fdc->flags |= FDC_NEEDS_RESET; 2198 fdc->fd = (fd_p) 0; 2199 fdc->fdu = -1; 2200 return (1); 2201 } 2202 fdc->retry++; 2203 return (1); 2204} 2205 2206static int 2207fdformat(dev, finfo, p) 2208 dev_t dev; 2209 struct fd_formb *finfo; 2210 struct proc *p; 2211{ 2212 fdu_t fdu; 2213 fd_p fd; 2214 2215 struct buf *bp; 2216 int rv = 0, s; 2217 size_t fdblk; 2218 2219 fdu = FDUNIT(minor(dev)); 2220 fd = devclass_get_softc(fd_devclass, fdu); 2221 fdblk = 128 << fd->ft->secsize; 2222 2223 /* set up a buffer header for fdstrategy() */ 2224 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2225 if(bp == 0) 2226 return ENOBUFS; 2227 /* 2228 * keep the process from being swapped 2229 */ 2230 PHOLD(p); 2231 bzero((void *)bp, sizeof(struct buf)); 2232 BUF_LOCKINIT(bp); 2233 BUF_LOCK(bp, LK_EXCLUSIVE); 2234 bp->b_flags = B_PHYS; 2235 bp->b_iocmd = BIO_FORMAT; 2236 2237 /* 2238 * calculate a fake blkno, so fdstrategy() would initiate a 2239 * seek to the requested cylinder 2240 */ 2241 bp->b_blkno = (finfo->cyl * (fd->ft->sectrac * fd->ft->heads) 2242 + finfo->head * fd->ft->sectrac) * fdblk / DEV_BSIZE; 2243 2244 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2245 bp->b_data = (caddr_t)finfo; 2246 2247 /* now do the format */ 2248 bp->b_dev = dev; 2249 DEV_STRATEGY(bp, 0); 2250 2251 /* ...and wait for it to complete */ 2252 s = splbio(); 2253 while(!(bp->b_flags & B_DONE)) { 2254 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2255 if (rv == EWOULDBLOCK) 2256 break; 2257 } 2258 splx(s); 2259 2260 if (rv == EWOULDBLOCK) { 2261 /* timed out */ 2262 rv = EIO; 2263 device_unbusy(fd->dev); 2264 biodone(&bp->b_io); /* XXX: HUH ? */ 2265 } 2266 if (bp->b_ioflags & BIO_ERROR) 2267 rv = bp->b_error; 2268 /* 2269 * allow the process to be swapped 2270 */ 2271 PRELE(p); 2272 BUF_UNLOCK(bp); 2273 BUF_LOCKFREE(bp); 2274 free(bp, M_TEMP); 2275 return rv; 2276} 2277 2278/* 2279 * TODO: don't allocate buffer on stack. 2280 */ 2281 2282static int 2283fdioctl(dev, cmd, addr, flag, p) 2284 dev_t dev; 2285 u_long cmd; 2286 caddr_t addr; 2287 int flag; 2288 struct proc *p; 2289{ 2290 fdu_t fdu = FDUNIT(minor(dev)); 2291 fd_p fd = devclass_get_softc(fd_devclass, fdu); 2292 size_t fdblk; 2293 2294 struct fd_type *fdt; 2295 struct disklabel *dl; 2296 char buffer[DEV_BSIZE]; 2297 int error = 0; 2298 2299 fdblk = 128 << fd->ft->secsize; 2300 2301 switch (cmd) { 2302 case DIOCGDINFO: 2303 bzero(buffer, sizeof (buffer)); 2304 dl = (struct disklabel *)buffer; 2305 dl->d_secsize = fdblk; 2306 fdt = fd->ft; 2307 dl->d_secpercyl = fdt->size / fdt->tracks; 2308 dl->d_type = DTYPE_FLOPPY; 2309 2310 if (readdisklabel(dkmodpart(dev, RAW_PART), dl) 2311 == NULL) 2312 error = 0; 2313 else 2314 error = EINVAL; 2315 2316 *(struct disklabel *)addr = *dl; 2317 break; 2318 2319 case DIOCSDINFO: 2320 if ((flag & FWRITE) == 0) 2321 error = EBADF; 2322 break; 2323 2324 case DIOCWLABEL: 2325 if ((flag & FWRITE) == 0) 2326 error = EBADF; 2327 break; 2328 2329 case DIOCWDINFO: 2330 if ((flag & FWRITE) == 0) { 2331 error = EBADF; 2332 break; 2333 } 2334 2335 dl = (struct disklabel *)addr; 2336 2337 if ((error = setdisklabel((struct disklabel *)buffer, dl, 2338 (u_long)0)) != 0) 2339 break; 2340 2341 error = writedisklabel(dev, (struct disklabel *)buffer); 2342 break; 2343 case FD_FORM: 2344 if ((flag & FWRITE) == 0) 2345 error = EBADF; /* must be opened for writing */ 2346 else if (((struct fd_formb *)addr)->format_version != 2347 FD_FORMAT_VERSION) 2348 error = EINVAL; /* wrong version of formatting prog */ 2349 else 2350 error = fdformat(dev, (struct fd_formb *)addr, p); 2351 break; 2352 2353 case FD_GTYPE: /* get drive type */ 2354 *(struct fd_type *)addr = *fd->ft; 2355 break; 2356 2357 case FD_STYPE: /* set drive type */ 2358 /* this is considered harmful; only allow for superuser */ 2359 if (suser(p) != 0) 2360 return EPERM; 2361 *fd->ft = *(struct fd_type *)addr; 2362 break; 2363 2364 case FD_GOPTS: /* get drive options */ 2365 *(int *)addr = fd->options; 2366 break; 2367 2368 case FD_SOPTS: /* set drive options */ 2369 fd->options = *(int *)addr; 2370 break; 2371 2372 default: 2373 error = ENOTTY; 2374 break; 2375 } 2376 return (error); 2377} 2378 2379/* 2380 * Hello emacs, these are the 2381 * Local Variables: 2382 * c-indent-level: 8 2383 * c-continued-statement-offset: 8 2384 * c-continued-brace-offset: 0 2385 * c-brace-offset: -8 2386 * c-brace-imaginary-offset: 0 2387 * c-argdecl-indent: 8 2388 * c-label-offset: -8 2389 * c++-hanging-braces: 1 2390 * c++-access-specifier-offset: -8 2391 * c++-empty-arglist-indent: 8 2392 * c++-friend-offset: 0 2393 * End: 2394 */
|