1 /* 2 * Copyright (c) 1990 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Don Ahn. 7 * 8 * Libretto PCMCIA floppy support by David Horwitt (dhorwitt@ucsd.edu) 9 * aided by the Linux floppy driver modifications from David Bateman 10 * (dbateman@eng.uts.edu.au). 11 * 12 * Copyright (c) 1993, 1994 by 13 * jc@irbs.UUCP (John Capo) 14 * vak@zebub.msk.su (Serge Vakulenko) 15 * ache@astral.msk.su (Andrew A. Chernov) 16 * 17 * Copyright (c) 1993, 1994, 1995 by 18 * joerg_wunsch@uriah.sax.de (Joerg Wunsch) 19 * dufault@hda.com (Peter Dufault) 20 * 21 * Copyright (c) 2001 Joerg Wunsch, 22 * joerg_wunsch@uriah.sax.de (Joerg Wunsch) 23 * 24 * Redistribution and use in source and binary forms, with or without 25 * modification, are permitted provided that the following conditions 26 * are met: 27 * 1. Redistributions of source code must retain the above copyright 28 * notice, this list of conditions and the following disclaimer. 29 * 2. Redistributions in binary form must reproduce the above copyright 30 * notice, this list of conditions and the following disclaimer in the 31 * documentation and/or other materials provided with the distribution. 32 * 33 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 34 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 35 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 36 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 37 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 38 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 39 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 40 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 41 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 42 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 43 * SUCH DAMAGE. 44 * 45 * from: @(#)fd.c 7.4 (Berkeley) 5/25/91 46 * $FreeBSD$ 47 * 48 */ 49 50 #include "opt_fdc.h" 51 #include "card.h" 52 53 #include <sys/param.h> 54 #include <sys/systm.h> 55 #include <sys/bio.h> 56 #include <sys/bus.h> 57 #include <sys/conf.h> 58 #include <sys/devicestat.h> 59 #include <sys/disklabel.h> 60 #include <sys/fcntl.h> 61 #include <sys/kernel.h> 62 #include <sys/lock.h> 63 #include <sys/malloc.h> 64 #include <sys/module.h> 65 #include <sys/mutex.h> 66 #include <sys/proc.h> 67 #include <sys/syslog.h> 68 69 #include <sys/bus.h> 70 #include <machine/bus.h> 71 #include <sys/rman.h> 72 73 #include <machine/clock.h> 74 #include <machine/ioctl_fd.h> 75 #include <machine/resource.h> 76 #include <machine/stdarg.h> 77 78 #include <isa/isavar.h> 79 #include <isa/isareg.h> 80 #include <isa/fdreg.h> 81 #include <isa/fdc.h> 82 #include <isa/rtc.h> 83 84 /* misuse a flag to identify format operation */ 85 86 /* configuration flags */ 87 #define FDC_PRETEND_D0 (1 << 0) /* pretend drive 0 to be there */ 88 #define FDC_NO_FIFO (1 << 2) /* do not enable FIFO */ 89 90 /* internally used only, not really from CMOS: */ 91 #define RTCFDT_144M_PRETENDED 0x1000 92 93 /* error returns for fd_cmd() */ 94 #define FD_FAILED -1 95 #define FD_NOT_VALID -2 96 #define FDC_ERRMAX 100 /* do not log more */ 97 98 #define NUMTYPES 17 99 #define NUMDENS (NUMTYPES - 7) 100 101 /* These defines (-1) must match index for fd_types */ 102 #define F_TAPE_TYPE 0x020 /* bit for fd_types to indicate tape */ 103 #define NO_TYPE 0 /* must match NO_TYPE in ft.c */ 104 #define FD_1720 1 105 #define FD_1480 2 106 #define FD_1440 3 107 #define FD_1200 4 108 #define FD_820 5 109 #define FD_800 6 110 #define FD_720 7 111 #define FD_360 8 112 #define FD_640 9 113 #define FD_1232 10 114 115 #define FD_1480in5_25 11 116 #define FD_1440in5_25 12 117 #define FD_820in5_25 13 118 #define FD_800in5_25 14 119 #define FD_720in5_25 15 120 #define FD_360in5_25 16 121 #define FD_640in5_25 17 122 123 124 static struct fd_type fd_types[NUMTYPES] = 125 { 126 { 21,2,0xFF,0x04,82,3444,1,FDC_500KBPS,2,0x0C,2 }, /* 1.72M in HD 3.5in */ 127 { 18,2,0xFF,0x1B,82,2952,1,FDC_500KBPS,2,0x6C,1 }, /* 1.48M in HD 3.5in */ 128 { 18,2,0xFF,0x1B,80,2880,1,FDC_500KBPS,2,0x6C,1 }, /* 1.44M in HD 3.5in */ 129 { 15,2,0xFF,0x1B,80,2400,1,FDC_500KBPS,2,0x54,1 }, /* 1.2M in HD 5.25/3.5 */ 130 { 10,2,0xFF,0x10,82,1640,1,FDC_250KBPS,2,0x2E,1 }, /* 820K in HD 3.5in */ 131 { 10,2,0xFF,0x10,80,1600,1,FDC_250KBPS,2,0x2E,1 }, /* 800K in HD 3.5in */ 132 { 9,2,0xFF,0x20,80,1440,1,FDC_250KBPS,2,0x50,1 }, /* 720K in HD 3.5in */ 133 { 9,2,0xFF,0x2A,40, 720,1,FDC_250KBPS,2,0x50,1 }, /* 360K in DD 5.25in */ 134 { 8,2,0xFF,0x2A,80,1280,1,FDC_250KBPS,2,0x50,1 }, /* 640K in DD 5.25in */ 135 { 8,3,0xFF,0x35,77,1232,1,FDC_500KBPS,2,0x74,1 }, /* 1.23M in HD 5.25in */ 136 137 { 18,2,0xFF,0x02,82,2952,1,FDC_500KBPS,2,0x02,2 }, /* 1.48M in HD 5.25in */ 138 { 18,2,0xFF,0x02,80,2880,1,FDC_500KBPS,2,0x02,2 }, /* 1.44M in HD 5.25in */ 139 { 10,2,0xFF,0x10,82,1640,1,FDC_300KBPS,2,0x2E,1 }, /* 820K in HD 5.25in */ 140 { 10,2,0xFF,0x10,80,1600,1,FDC_300KBPS,2,0x2E,1 }, /* 800K in HD 5.25in */ 141 { 9,2,0xFF,0x20,80,1440,1,FDC_300KBPS,2,0x50,1 }, /* 720K in HD 5.25in */ 142 { 9,2,0xFF,0x23,40, 720,2,FDC_300KBPS,2,0x50,1 }, /* 360K in HD 5.25in */ 143 { 8,2,0xFF,0x2A,80,1280,1,FDC_300KBPS,2,0x50,1 }, /* 640K in HD 5.25in */ 144 }; 145 146 #define DRVS_PER_CTLR 2 /* 2 floppies */ 147 148 /***********************************************************************\ 149 * Per controller structure. * 150 \***********************************************************************/ 151 static devclass_t fdc_devclass; 152 153 /***********************************************************************\ 154 * Per drive structure. * 155 * N per controller (DRVS_PER_CTLR) * 156 \***********************************************************************/ 157 struct fd_data { 158 struct fdc_data *fdc; /* pointer to controller structure */ 159 int fdsu; /* this units number on this controller */ 160 int type; /* Drive type (FD_1440...) */ 161 struct fd_type *ft; /* pointer to the type descriptor */ 162 int flags; 163 #define FD_OPEN 0x01 /* it's open */ 164 #define FD_ACTIVE 0x02 /* it's active */ 165 #define FD_MOTOR 0x04 /* motor should be on */ 166 #define FD_MOTOR_WAIT 0x08 /* motor coming up */ 167 int skip; 168 int hddrv; 169 #define FD_NO_TRACK -2 170 int track; /* where we think the head is */ 171 int options; /* user configurable options, see ioctl_fd.h */ 172 struct callout_handle toffhandle; 173 struct callout_handle tohandle; 174 struct devstat device_stats; 175 device_t dev; 176 fdu_t fdu; 177 }; 178 179 struct fdc_ivars { 180 int fdunit; 181 }; 182 static devclass_t fd_devclass; 183 184 /***********************************************************************\ 185 * Throughout this file the following conventions will be used: * 186 * fd is a pointer to the fd_data struct for the drive in question * 187 * fdc is a pointer to the fdc_data struct for the controller * 188 * fdu is the floppy drive unit number * 189 * fdcu is the floppy controller unit number * 190 * fdsu is the floppy drive unit number on that controller. (sub-unit) * 191 \***********************************************************************/ 192 193 /* needed for ft driver, thus exported */ 194 int in_fdc(struct fdc_data *); 195 int out_fdc(struct fdc_data *, int); 196 197 /* internal functions */ 198 static void fdc_intr(void *); 199 static void set_motor(struct fdc_data *, int, int); 200 # define TURNON 1 201 # define TURNOFF 0 202 static timeout_t fd_turnoff; 203 static timeout_t fd_motor_on; 204 static void fd_turnon(struct fd_data *); 205 static void fdc_reset(fdc_p); 206 static int fd_in(struct fdc_data *, int *); 207 static void fdstart(struct fdc_data *); 208 static timeout_t fd_iotimeout; 209 static timeout_t fd_pseudointr; 210 static int fdstate(struct fdc_data *); 211 static int retrier(struct fdc_data *); 212 static int fdformat(dev_t, struct fd_formb *, struct proc *); 213 214 static int enable_fifo(fdc_p fdc); 215 216 static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */ 217 218 219 #define DEVIDLE 0 220 #define FINDWORK 1 221 #define DOSEEK 2 222 #define SEEKCOMPLETE 3 223 #define IOCOMPLETE 4 224 #define RECALCOMPLETE 5 225 #define STARTRECAL 6 226 #define RESETCTLR 7 227 #define SEEKWAIT 8 228 #define RECALWAIT 9 229 #define MOTORWAIT 10 230 #define IOTIMEDOUT 11 231 #define RESETCOMPLETE 12 232 #define PIOREAD 13 233 234 #ifdef FDC_DEBUG 235 static char const * const fdstates[] = 236 { 237 "DEVIDLE", 238 "FINDWORK", 239 "DOSEEK", 240 "SEEKCOMPLETE", 241 "IOCOMPLETE", 242 "RECALCOMPLETE", 243 "STARTRECAL", 244 "RESETCTLR", 245 "SEEKWAIT", 246 "RECALWAIT", 247 "MOTORWAIT", 248 "IOTIMEDOUT", 249 "RESETCOMPLETE", 250 "PIOREAD", 251 }; 252 253 /* CAUTION: fd_debug causes huge amounts of logging output */ 254 static int volatile fd_debug = 0; 255 #define TRACE0(arg) if(fd_debug) printf(arg) 256 #define TRACE1(arg1, arg2) if(fd_debug) printf(arg1, arg2) 257 #else /* FDC_DEBUG */ 258 #define TRACE0(arg) 259 #define TRACE1(arg1, arg2) 260 #endif /* FDC_DEBUG */ 261 262 static void 263 fdout_wr(fdc_p fdc, u_int8_t v) 264 { 265 bus_space_write_1(fdc->portt, fdc->porth, FDOUT+fdc->port_off, v); 266 } 267 268 static u_int8_t 269 fdsts_rd(fdc_p fdc) 270 { 271 return bus_space_read_1(fdc->portt, fdc->porth, FDSTS+fdc->port_off); 272 } 273 274 static void 275 fddata_wr(fdc_p fdc, u_int8_t v) 276 { 277 bus_space_write_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off, v); 278 } 279 280 static u_int8_t 281 fddata_rd(fdc_p fdc) 282 { 283 return bus_space_read_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off); 284 } 285 286 static void 287 fdctl_wr_isa(fdc_p fdc, u_int8_t v) 288 { 289 bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v); 290 } 291 292 #if NCARD > 0 293 static void 294 fdctl_wr_pcmcia(fdc_p fdc, u_int8_t v) 295 { 296 bus_space_write_1(fdc->portt, fdc->porth, FDCTL+fdc->port_off, v); 297 } 298 #endif 299 300 #if 0 301 302 static u_int8_t 303 fdin_rd(fdc_p fdc) 304 { 305 return bus_space_read_1(fdc->portt, fdc->porth, FDIN); 306 } 307 308 #endif 309 310 static d_open_t Fdopen; /* NOTE, not fdopen */ 311 static d_close_t fdclose; 312 static d_ioctl_t fdioctl; 313 static d_strategy_t fdstrategy; 314 315 #define CDEV_MAJOR 9 316 317 static struct cdevsw fd_cdevsw = { 318 /* open */ Fdopen, 319 /* close */ fdclose, 320 /* read */ physread, 321 /* write */ physwrite, 322 /* ioctl */ fdioctl, 323 /* poll */ nopoll, 324 /* mmap */ nommap, 325 /* strategy */ fdstrategy, 326 /* name */ "fd", 327 /* maj */ CDEV_MAJOR, 328 /* dump */ nodump, 329 /* psize */ nopsize, 330 /* flags */ D_DISK, 331 }; 332 333 static int 334 fdc_err(struct fdc_data *fdc, const char *s) 335 { 336 fdc->fdc_errs++; 337 if (s) { 338 if (fdc->fdc_errs < FDC_ERRMAX) 339 device_printf(fdc->fdc_dev, "%s", s); 340 else if (fdc->fdc_errs == FDC_ERRMAX) 341 device_printf(fdc->fdc_dev, "too many errors, not " 342 "logging any more\n"); 343 } 344 345 return FD_FAILED; 346 } 347 348 /* 349 * fd_cmd: Send a command to the chip. Takes a varargs with this structure: 350 * Unit number, 351 * # of output bytes, output bytes as ints ..., 352 * # of input bytes, input bytes as ints ... 353 */ 354 static int 355 fd_cmd(struct fdc_data *fdc, int n_out, ...) 356 { 357 u_char cmd; 358 int n_in; 359 int n; 360 va_list ap; 361 362 va_start(ap, n_out); 363 cmd = (u_char)(va_arg(ap, int)); 364 va_end(ap); 365 va_start(ap, n_out); 366 for (n = 0; n < n_out; n++) 367 { 368 if (out_fdc(fdc, va_arg(ap, int)) < 0) 369 { 370 char msg[50]; 371 snprintf(msg, sizeof(msg), 372 "cmd %x failed at out byte %d of %d\n", 373 cmd, n + 1, n_out); 374 return fdc_err(fdc, msg); 375 } 376 } 377 n_in = va_arg(ap, int); 378 for (n = 0; n < n_in; n++) 379 { 380 int *ptr = va_arg(ap, int *); 381 if (fd_in(fdc, ptr) < 0) 382 { 383 char msg[50]; 384 snprintf(msg, sizeof(msg), 385 "cmd %02x failed at in byte %d of %d\n", 386 cmd, n + 1, n_in); 387 return fdc_err(fdc, msg); 388 } 389 } 390 391 return 0; 392 } 393 394 static int 395 enable_fifo(fdc_p fdc) 396 { 397 int i, j; 398 399 if ((fdc->flags & FDC_HAS_FIFO) == 0) { 400 401 /* 402 * XXX: 403 * Cannot use fd_cmd the normal way here, since 404 * this might be an invalid command. Thus we send the 405 * first byte, and check for an early turn of data directon. 406 */ 407 408 if (out_fdc(fdc, I8207X_CONFIGURE) < 0) 409 return fdc_err(fdc, "Enable FIFO failed\n"); 410 411 /* If command is invalid, return */ 412 j = 100000; 413 while ((i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM)) 414 != NE7_RQM && j-- > 0) 415 if (i == (NE7_DIO | NE7_RQM)) { 416 fdc_reset(fdc); 417 return FD_FAILED; 418 } 419 if (j<0 || 420 fd_cmd(fdc, 3, 421 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) { 422 fdc_reset(fdc); 423 return fdc_err(fdc, "Enable FIFO failed\n"); 424 } 425 fdc->flags |= FDC_HAS_FIFO; 426 return 0; 427 } 428 if (fd_cmd(fdc, 4, 429 I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) 430 return fdc_err(fdc, "Re-enable FIFO failed\n"); 431 return 0; 432 } 433 434 static int 435 fd_sense_drive_status(fdc_p fdc, int *st3p) 436 { 437 int st3; 438 439 if (fd_cmd(fdc, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3)) 440 { 441 return fdc_err(fdc, "Sense Drive Status failed\n"); 442 } 443 if (st3p) 444 *st3p = st3; 445 446 return 0; 447 } 448 449 static int 450 fd_sense_int(fdc_p fdc, int *st0p, int *cylp) 451 { 452 int cyl, st0, ret; 453 454 ret = fd_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); 455 if (ret) { 456 (void)fdc_err(fdc, 457 "sense intr err reading stat reg 0\n"); 458 return ret; 459 } 460 461 if (st0p) 462 *st0p = st0; 463 464 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { 465 /* 466 * There doesn't seem to have been an interrupt. 467 */ 468 return FD_NOT_VALID; 469 } 470 471 if (fd_in(fdc, &cyl) < 0) { 472 return fdc_err(fdc, "can't get cyl num\n"); 473 } 474 475 if (cylp) 476 *cylp = cyl; 477 478 return 0; 479 } 480 481 482 static int 483 fd_read_status(fdc_p fdc, int fdsu) 484 { 485 int i, ret; 486 487 for (i = 0; i < 7; i++) { 488 /* 489 * XXX types are poorly chosen. Only bytes can by read 490 * from the hardware, but fdc->status[] wants u_ints and 491 * fd_in() gives ints. 492 */ 493 int status; 494 495 ret = fd_in(fdc, &status); 496 fdc->status[i] = status; 497 if (ret != 0) 498 break; 499 } 500 501 if (ret == 0) 502 fdc->flags |= FDC_STAT_VALID; 503 else 504 fdc->flags &= ~FDC_STAT_VALID; 505 506 return ret; 507 } 508 509 /****************************************************************************/ 510 /* autoconfiguration stuff */ 511 /****************************************************************************/ 512 513 static int 514 fdc_alloc_resources(struct fdc_data *fdc) 515 { 516 device_t dev; 517 int ispnp, ispcmcia; 518 519 dev = fdc->fdc_dev; 520 ispnp = (fdc->flags & FDC_ISPNP) != 0; 521 ispcmcia = (fdc->flags & FDC_ISPCMCIA) != 0; 522 fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0; 523 fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0; 524 525 /* 526 * On standard ISA, we don't just use an 8 port range 527 * (e.g. 0x3f0-0x3f7) since that covers an IDE control 528 * register at 0x3f6. 529 * 530 * Isn't PC hardware wonderful. 531 * 532 * The Y-E Data PCMCIA FDC doesn't have this problem, it 533 * uses the register with offset 6 for pseudo-DMA, and the 534 * one with offset 7 as control register. 535 */ 536 fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT, 537 &fdc->rid_ioport, 0ul, ~0ul, 538 ispcmcia ? 8 : (ispnp ? 1 : 6), 539 RF_ACTIVE); 540 if (fdc->res_ioport == 0) { 541 device_printf(dev, "cannot reserve I/O port range\n"); 542 return ENXIO; 543 } 544 fdc->portt = rman_get_bustag(fdc->res_ioport); 545 fdc->porth = rman_get_bushandle(fdc->res_ioport); 546 547 if (!ispcmcia) { 548 /* 549 * Some BIOSen report the device at 0x3f2-0x3f5,0x3f7 550 * and some at 0x3f0-0x3f5,0x3f7. We detect the former 551 * by checking the size and adjust the port address 552 * accordingly. 553 */ 554 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 0) == 4) 555 fdc->port_off = -2; 556 557 /* 558 * Register the control port range as rid 1 if it 559 * isn't there already. Most PnP BIOSen will have 560 * already done this but non-PnP configurations don't. 561 * 562 * And some (!!) report 0x3f2-0x3f5 and completely 563 * leave out the control register! It seems that some 564 * non-antique controller chips have a different 565 * method of programming the transfer speed which 566 * doesn't require the control register, but it's 567 * mighty bogus as the chip still responds to the 568 * address for the control register. 569 */ 570 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 1) == 0) { 571 u_long ctlstart; 572 573 /* Find the control port, usually 0x3f7 */ 574 ctlstart = rman_get_start(fdc->res_ioport) + 575 fdc->port_off + 7; 576 577 bus_set_resource(dev, SYS_RES_IOPORT, 1, ctlstart, 1); 578 } 579 580 /* 581 * Now (finally!) allocate the control port. 582 */ 583 fdc->rid_ctl = 1; 584 fdc->res_ctl = bus_alloc_resource(dev, SYS_RES_IOPORT, 585 &fdc->rid_ctl, 586 0ul, ~0ul, 1, RF_ACTIVE); 587 if (fdc->res_ctl == 0) { 588 device_printf(dev, 589 "cannot reserve control I/O port range\n"); 590 return ENXIO; 591 } 592 fdc->ctlt = rman_get_bustag(fdc->res_ctl); 593 fdc->ctlh = rman_get_bushandle(fdc->res_ctl); 594 } 595 596 fdc->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ, 597 &fdc->rid_irq, 0ul, ~0ul, 1, 598 RF_ACTIVE); 599 if (fdc->res_irq == 0) { 600 device_printf(dev, "cannot reserve interrupt line\n"); 601 return ENXIO; 602 } 603 604 if ((fdc->flags & FDC_NODMA) == 0) { 605 fdc->res_drq = bus_alloc_resource(dev, SYS_RES_DRQ, 606 &fdc->rid_drq, 0ul, ~0ul, 1, 607 RF_ACTIVE); 608 if (fdc->res_drq == 0) { 609 device_printf(dev, "cannot reserve DMA request line\n"); 610 return ENXIO; 611 } 612 fdc->dmachan = fdc->res_drq->r_start; 613 } 614 615 return 0; 616 } 617 618 static void 619 fdc_release_resources(struct fdc_data *fdc) 620 { 621 device_t dev; 622 623 dev = fdc->fdc_dev; 624 if (fdc->res_irq != 0) { 625 bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 626 fdc->res_irq); 627 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 628 fdc->res_irq); 629 } 630 if (fdc->res_ctl != 0) { 631 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 632 fdc->res_ctl); 633 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 634 fdc->res_ctl); 635 } 636 if (fdc->res_ioport != 0) { 637 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 638 fdc->res_ioport); 639 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 640 fdc->res_ioport); 641 } 642 if (fdc->res_drq != 0) { 643 bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 644 fdc->res_drq); 645 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 646 fdc->res_drq); 647 } 648 } 649 650 /****************************************************************************/ 651 /* autoconfiguration stuff */ 652 /****************************************************************************/ 653 654 static struct isa_pnp_id fdc_ids[] = { 655 {0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */ 656 {0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */ 657 {0} 658 }; 659 660 static int 661 fdc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 662 { 663 struct fdc_ivars *ivars = device_get_ivars(child); 664 665 switch (which) { 666 case FDC_IVAR_FDUNIT: 667 *result = ivars->fdunit; 668 break; 669 default: 670 return ENOENT; 671 } 672 return 0; 673 } 674 675 /* 676 * fdc controller section. 677 */ 678 static int 679 fdc_probe(device_t dev) 680 { 681 int error, ic_type; 682 struct fdc_data *fdc; 683 684 fdc = device_get_softc(dev); 685 bzero(fdc, sizeof *fdc); 686 fdc->fdc_dev = dev; 687 fdc->fdctl_wr = fdctl_wr_isa; 688 689 /* Check pnp ids */ 690 error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids); 691 if (error == ENXIO) 692 return ENXIO; 693 if (error == 0) 694 fdc->flags |= FDC_ISPNP; 695 696 /* Attempt to allocate our resources for the duration of the probe */ 697 error = fdc_alloc_resources(fdc); 698 if (error) 699 goto out; 700 701 /* First - lets reset the floppy controller */ 702 fdout_wr(fdc, 0); 703 DELAY(100); 704 fdout_wr(fdc, FDO_FRST); 705 706 /* see if it can handle a command */ 707 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 708 NE7_SPEC_2(2, 0), 0)) { 709 error = ENXIO; 710 goto out; 711 } 712 713 if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) { 714 ic_type = (u_char)ic_type; 715 switch (ic_type) { 716 case 0x80: 717 device_set_desc(dev, "NEC 765 or clone"); 718 fdc->fdct = FDC_NE765; 719 break; 720 case 0x81: 721 device_set_desc(dev, "Intel 82077 or clone"); 722 fdc->fdct = FDC_I82077; 723 break; 724 case 0x90: 725 device_set_desc(dev, "NEC 72065B or clone"); 726 fdc->fdct = FDC_NE72065; 727 break; 728 default: 729 device_set_desc(dev, "generic floppy controller"); 730 fdc->fdct = FDC_UNKNOWN; 731 break; 732 } 733 } 734 735 out: 736 fdc_release_resources(fdc); 737 return (error); 738 } 739 740 #if NCARD > 0 741 742 static int 743 fdc_pccard_probe(device_t dev) 744 { 745 int error; 746 struct fdc_data *fdc; 747 748 fdc = device_get_softc(dev); 749 bzero(fdc, sizeof *fdc); 750 fdc->fdc_dev = dev; 751 fdc->fdctl_wr = fdctl_wr_pcmcia; 752 753 fdc->flags |= FDC_ISPCMCIA | FDC_NODMA; 754 755 /* Attempt to allocate our resources for the duration of the probe */ 756 error = fdc_alloc_resources(fdc); 757 if (error) 758 goto out; 759 760 /* First - lets reset the floppy controller */ 761 fdout_wr(fdc, 0); 762 DELAY(100); 763 fdout_wr(fdc, FDO_FRST); 764 765 /* see if it can handle a command */ 766 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 767 NE7_SPEC_2(2, 0), 0)) { 768 error = ENXIO; 769 goto out; 770 } 771 772 device_set_desc(dev, "Y-E Data PCMCIA floppy"); 773 fdc->fdct = FDC_NE765; 774 775 out: 776 fdc_release_resources(fdc); 777 return (error); 778 } 779 780 static int 781 fdc_pccard_detach(device_t dev) 782 { 783 struct fdc_data *fdc; 784 int error; 785 786 fdc = device_get_softc(dev); 787 788 /* have our children detached first */ 789 if ((error = bus_generic_detach(dev))) 790 return (error); 791 792 if ((fdc->flags & FDC_ATTACHED) == 0) { 793 device_printf(dev, "already unloaded\n"); 794 return (0); 795 } 796 fdc->flags &= ~FDC_ATTACHED; 797 798 BUS_TEARDOWN_INTR(device_get_parent(dev), dev, fdc->res_irq, 799 fdc->fdc_intr); 800 fdc_release_resources(fdc); 801 device_printf(dev, "unload\n"); 802 return (0); 803 } 804 805 #endif /* NCARD > 0 */ 806 807 /* 808 * Add a child device to the fdc controller. It will then be probed etc. 809 */ 810 static void 811 fdc_add_child(device_t dev, const char *name, int unit) 812 { 813 int disabled; 814 struct fdc_ivars *ivar; 815 device_t child; 816 817 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT | M_ZERO); 818 if (ivar == NULL) 819 return; 820 if (resource_int_value(name, unit, "drive", &ivar->fdunit) != 0) 821 ivar->fdunit = 0; 822 child = device_add_child(dev, name, unit); 823 if (child == NULL) 824 return; 825 device_set_ivars(child, ivar); 826 if (resource_int_value(name, unit, "disabled", &disabled) == 0 827 && disabled != 0) 828 device_disable(child); 829 } 830 831 static int 832 fdc_attach(device_t dev) 833 { 834 struct fdc_data *fdc; 835 int i, error; 836 const char *name; 837 838 fdc = device_get_softc(dev); 839 error = fdc_alloc_resources(fdc); 840 if (error) { 841 device_printf(dev, "cannot re-aquire resources\n"); 842 return error; 843 } 844 error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq, 845 INTR_TYPE_BIO | INTR_ENTROPY, fdc_intr, fdc, 846 &fdc->fdc_intr); 847 if (error) { 848 device_printf(dev, "cannot setup interrupt\n"); 849 return error; 850 } 851 fdc->fdcu = device_get_unit(dev); 852 fdc->flags |= FDC_ATTACHED; 853 854 if ((fdc->flags & FDC_NODMA) == 0) { 855 /* Acquire the DMA channel forever, The driver will do the rest */ 856 /* XXX should integrate with rman */ 857 isa_dma_acquire(fdc->dmachan); 858 isa_dmainit(fdc->dmachan, 128 << 3 /* XXX max secsize */); 859 } 860 fdc->state = DEVIDLE; 861 862 /* reset controller, turn motor off, clear fdout mirror reg */ 863 fdout_wr(fdc, ((fdc->fdout = 0))); 864 bioq_init(&fdc->head); 865 866 /* 867 * Probe and attach any children. We should probably detect 868 * devices from the BIOS unless overridden. 869 */ 870 name = device_get_nameunit(dev); 871 i = -1; 872 while ((i = resource_query_string(i, "at", name)) != -1) 873 fdc_add_child(dev, resource_query_name(i), 874 resource_query_unit(i)); 875 876 return (bus_generic_attach(dev)); 877 } 878 879 static int 880 fdc_print_child(device_t me, device_t child) 881 { 882 int retval = 0; 883 884 retval += bus_print_child_header(me, child); 885 retval += printf(" on %s drive %d\n", device_get_nameunit(me), 886 fdc_get_fdunit(child)); 887 888 return (retval); 889 } 890 891 static device_method_t fdc_methods[] = { 892 /* Device interface */ 893 DEVMETHOD(device_probe, fdc_probe), 894 DEVMETHOD(device_attach, fdc_attach), 895 DEVMETHOD(device_detach, bus_generic_detach), 896 DEVMETHOD(device_shutdown, bus_generic_shutdown), 897 DEVMETHOD(device_suspend, bus_generic_suspend), 898 DEVMETHOD(device_resume, bus_generic_resume), 899 900 /* Bus interface */ 901 DEVMETHOD(bus_print_child, fdc_print_child), 902 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 903 /* Our children never use any other bus interface methods. */ 904 905 { 0, 0 } 906 }; 907 908 static driver_t fdc_driver = { 909 "fdc", 910 fdc_methods, 911 sizeof(struct fdc_data) 912 }; 913 914 DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0); 915 916 #if NCARD > 0 917 918 static device_method_t fdc_pccard_methods[] = { 919 /* Device interface */ 920 DEVMETHOD(device_probe, fdc_pccard_probe), 921 DEVMETHOD(device_attach, fdc_attach), 922 DEVMETHOD(device_detach, fdc_pccard_detach), 923 DEVMETHOD(device_shutdown, bus_generic_shutdown), 924 DEVMETHOD(device_suspend, bus_generic_suspend), 925 DEVMETHOD(device_resume, bus_generic_resume), 926 927 /* Bus interface */ 928 DEVMETHOD(bus_print_child, fdc_print_child), 929 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 930 /* Our children never use any other bus interface methods. */ 931 932 { 0, 0 } 933 }; 934 935 static driver_t fdc_pccard_driver = { 936 "fdc", 937 fdc_pccard_methods, 938 sizeof(struct fdc_data) 939 }; 940 941 DRIVER_MODULE(fdc, pccard, fdc_pccard_driver, fdc_devclass, 0, 0); 942 943 #endif /* NCARD > 0 */ 944 945 static void fd_clone __P((void *arg, char *name, int namelen, dev_t *dev)); 946 947 static struct { 948 char *match; 949 int minor; 950 int link; 951 } fd_suffix[] = { 952 { "a", 0, 1 }, 953 { "b", 0, 1 }, 954 { "c", 0, 1 }, 955 { "d", 0, 1 }, 956 { "e", 0, 1 }, 957 { "f", 0, 1 }, 958 { "g", 0, 1 }, 959 { "h", 0, 1 }, 960 { ".1720", 1, 0 }, 961 { ".1480", 2, 0 }, 962 { ".1440", 3, 0 }, 963 { ".1200", 4, 0 }, 964 { ".820", 5, 0 }, 965 { ".800", 6, 0 }, 966 { ".720", 7, 0 }, 967 { ".360", 8, 0 }, 968 { ".640", 9, 0 }, 969 { ".1232", 10, 0 }, 970 { 0, 0 } 971 }; 972 static void 973 fd_clone(arg, name, namelen, dev) 974 void *arg; 975 char *name; 976 int namelen; 977 dev_t *dev; 978 { 979 int u, d, i; 980 char *n; 981 dev_t pdev; 982 983 if (*dev != NODEV) 984 return; 985 if (dev_stdclone(name, &n, "fd", &u) != 2) 986 return; 987 for (i = 0; ; i++) { 988 if (fd_suffix[i].match == NULL) 989 return; 990 if (strcmp(n, fd_suffix[i].match)) 991 continue; 992 d = fd_suffix[i].minor; 993 break; 994 } 995 if (fd_suffix[i].link == 0) { 996 *dev = make_dev(&fd_cdevsw, (u << 6) + d, 997 UID_ROOT, GID_OPERATOR, 0640, name); 998 } else { 999 pdev = makedev(fd_cdevsw.d_maj, (u << 6) + d); 1000 *dev = make_dev_alias(pdev, name); 1001 } 1002 } 1003 1004 /******************************************************************/ 1005 /* 1006 * devices attached to the controller section. 1007 */ 1008 static int 1009 fd_probe(device_t dev) 1010 { 1011 int i; 1012 u_int fdt, st0, st3; 1013 struct fd_data *fd; 1014 struct fdc_data *fdc; 1015 fdsu_t fdsu; 1016 static int fd_fifo = 0; 1017 1018 fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */ 1019 fd = device_get_softc(dev); 1020 fdc = device_get_softc(device_get_parent(dev)); 1021 1022 bzero(fd, sizeof *fd); 1023 fd->dev = dev; 1024 fd->fdc = fdc; 1025 fd->fdsu = fdsu; 1026 fd->fdu = device_get_unit(dev); 1027 1028 #ifdef __i386__ 1029 /* look up what bios thinks we have */ 1030 switch (fd->fdu) { 1031 case 0: 1032 if ((fdc->flags & FDC_ISPCMCIA)) 1033 fdt = RTCFDT_144M; 1034 else if (device_get_flags(fdc->fdc_dev) & FDC_PRETEND_D0) 1035 fdt = RTCFDT_144M | RTCFDT_144M_PRETENDED; 1036 else 1037 fdt = (rtcin(RTC_FDISKETTE) & 0xf0); 1038 break; 1039 case 1: 1040 fdt = ((rtcin(RTC_FDISKETTE) << 4) & 0xf0); 1041 break; 1042 default: 1043 fdt = RTCFDT_NONE; 1044 break; 1045 } 1046 #else 1047 fdt = RTCFDT_144M; /* XXX probably */ 1048 #endif 1049 1050 /* is there a unit? */ 1051 if (fdt == RTCFDT_NONE) 1052 return (ENXIO); 1053 1054 /* select it */ 1055 set_motor(fdc, fdsu, TURNON); 1056 DELAY(1000000); /* 1 sec */ 1057 1058 /* XXX This doesn't work before the first set_motor() */ 1059 if (fd_fifo == 0 && fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN 1060 && (device_get_flags(fdc->fdc_dev) & FDC_NO_FIFO) == 0 1061 && enable_fifo(fdc) == 0) { 1062 device_printf(device_get_parent(dev), 1063 "FIFO enabled, %d bytes threshold\n", fifo_threshold); 1064 } 1065 fd_fifo = 1; 1066 1067 if ((fd_cmd(fdc, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) 1068 && (st3 & NE7_ST3_T0)) { 1069 /* if at track 0, first seek inwards */ 1070 /* seek some steps: */ 1071 fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0); 1072 DELAY(300000); /* ...wait a moment... */ 1073 fd_sense_int(fdc, 0, 0); /* make ctrlr happy */ 1074 } 1075 1076 /* If we're at track 0 first seek inwards. */ 1077 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) { 1078 /* Seek some steps... */ 1079 if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 1080 /* ...wait a moment... */ 1081 DELAY(300000); 1082 /* make ctrlr happy: */ 1083 fd_sense_int(fdc, 0, 0); 1084 } 1085 } 1086 1087 for (i = 0; i < 2; i++) { 1088 /* 1089 * we must recalibrate twice, just in case the 1090 * heads have been beyond cylinder 76, since most 1091 * FDCs still barf when attempting to recalibrate 1092 * more than 77 steps 1093 */ 1094 /* go back to 0: */ 1095 if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1096 /* a second being enough for full stroke seek*/ 1097 DELAY(i == 0 ? 1000000 : 300000); 1098 1099 /* anything responding? */ 1100 if (fd_sense_int(fdc, &st0, 0) == 0 && 1101 (st0 & NE7_ST0_EC) == 0) 1102 break; /* already probed succesfully */ 1103 } 1104 } 1105 1106 set_motor(fdc, fdsu, TURNOFF); 1107 1108 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */ 1109 return (ENXIO); 1110 1111 fd->track = FD_NO_TRACK; 1112 fd->fdc = fdc; 1113 fd->fdsu = fdsu; 1114 fd->options = 0; 1115 callout_handle_init(&fd->toffhandle); 1116 callout_handle_init(&fd->tohandle); 1117 1118 switch (fdt) { 1119 case RTCFDT_12M: 1120 device_set_desc(dev, "1200-KB 5.25\" drive"); 1121 fd->type = FD_1200; 1122 break; 1123 case RTCFDT_144M | RTCFDT_144M_PRETENDED: 1124 device_set_desc(dev, "config-pretended 1440-MB 3.5\" drive"); 1125 fdt = RTCFDT_144M; 1126 fd->type = FD_1440; 1127 case RTCFDT_144M: 1128 device_set_desc(dev, "1440-KB 3.5\" drive"); 1129 fd->type = FD_1440; 1130 break; 1131 case RTCFDT_288M: 1132 case RTCFDT_288M_1: 1133 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 1134 fd->type = FD_1440; 1135 break; 1136 case RTCFDT_360K: 1137 device_set_desc(dev, "360-KB 5.25\" drive"); 1138 fd->type = FD_360; 1139 break; 1140 case RTCFDT_720K: 1141 printf("720-KB 3.5\" drive"); 1142 fd->type = FD_720; 1143 break; 1144 default: 1145 return (ENXIO); 1146 } 1147 return (0); 1148 } 1149 1150 static int 1151 fd_attach(device_t dev) 1152 { 1153 struct fd_data *fd; 1154 static int cdevsw_add_done = 0; 1155 1156 fd = device_get_softc(dev); 1157 1158 if (!cdevsw_add_done) { 1159 cdevsw_add(&fd_cdevsw); /* XXX */ 1160 cdevsw_add_done++; 1161 } 1162 EVENTHANDLER_REGISTER(dev_clone, fd_clone, 0, 1000); 1163 make_dev(&fd_cdevsw, (fd->fdu << 6), 1164 UID_ROOT, GID_OPERATOR, 0640, "fd%d", fd->fdu); 1165 1166 /* 1167 * Export the drive to the devstat interface. 1168 */ 1169 devstat_add_entry(&fd->device_stats, device_get_name(dev), 1170 device_get_unit(dev), 512, DEVSTAT_NO_ORDERED_TAGS, 1171 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER, 1172 DEVSTAT_PRIORITY_FD); 1173 return (0); 1174 } 1175 1176 static int 1177 fd_detach(device_t dev) 1178 { 1179 struct fd_data *fd; 1180 1181 fd = device_get_softc(dev); 1182 untimeout(fd_turnoff, fd, fd->toffhandle); 1183 1184 return (0); 1185 } 1186 1187 static device_method_t fd_methods[] = { 1188 /* Device interface */ 1189 DEVMETHOD(device_probe, fd_probe), 1190 DEVMETHOD(device_attach, fd_attach), 1191 DEVMETHOD(device_detach, fd_detach), 1192 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1193 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 1194 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 1195 1196 { 0, 0 } 1197 }; 1198 1199 static driver_t fd_driver = { 1200 "fd", 1201 fd_methods, 1202 sizeof(struct fd_data) 1203 }; 1204 1205 DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, 0, 0); 1206 1207 /****************************************************************************/ 1208 /* motor control stuff */ 1209 /* remember to not deselect the drive we're working on */ 1210 /****************************************************************************/ 1211 static void 1212 set_motor(struct fdc_data *fdc, int fdsu, int turnon) 1213 { 1214 int fdout = fdc->fdout; 1215 int needspecify = 0; 1216 1217 if(turnon) { 1218 fdout &= ~FDO_FDSEL; 1219 fdout |= (FDO_MOEN0 << fdsu) + fdsu; 1220 } else 1221 fdout &= ~(FDO_MOEN0 << fdsu); 1222 1223 if(!turnon 1224 && (fdout & (FDO_MOEN0+FDO_MOEN1+FDO_MOEN2+FDO_MOEN3)) == 0) 1225 /* gonna turn off the last drive, put FDC to bed */ 1226 fdout &= ~ (FDO_FRST|FDO_FDMAEN); 1227 else { 1228 /* make sure controller is selected and specified */ 1229 if((fdout & (FDO_FRST|FDO_FDMAEN)) == 0) 1230 needspecify = 1; 1231 fdout |= (FDO_FRST|FDO_FDMAEN); 1232 } 1233 1234 fdout_wr(fdc, fdout); 1235 fdc->fdout = fdout; 1236 TRACE1("[0x%x->FDOUT]", fdout); 1237 1238 if (needspecify) { 1239 /* 1240 * XXX 1241 * special case: since we have just woken up the FDC 1242 * from its sleep, we silently assume the command will 1243 * be accepted, and do not test for a timeout 1244 */ 1245 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1246 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1247 0); 1248 if (fdc->flags & FDC_HAS_FIFO) 1249 (void) enable_fifo(fdc); 1250 } 1251 } 1252 1253 static void 1254 fd_turnoff(void *xfd) 1255 { 1256 int s; 1257 fd_p fd = xfd; 1258 1259 TRACE1("[fd%d: turnoff]", fd->fdu); 1260 1261 s = splbio(); 1262 /* 1263 * Don't turn off the motor yet if the drive is active. 1264 * 1265 * If we got here, this could only mean we missed an interrupt. 1266 * This can e. g. happen on the Y-E Date PCMCIA floppy controller 1267 * after a controller reset. Just schedule a pseudo-interrupt 1268 * so the state machine gets re-entered. 1269 */ 1270 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) { 1271 fdc_intr(fd->fdc); 1272 splx(s); 1273 return; 1274 } 1275 1276 fd->flags &= ~FD_MOTOR; 1277 set_motor(fd->fdc, fd->fdsu, TURNOFF); 1278 splx(s); 1279 } 1280 1281 static void 1282 fd_motor_on(void *xfd) 1283 { 1284 int s; 1285 fd_p fd = xfd; 1286 1287 s = splbio(); 1288 fd->flags &= ~FD_MOTOR_WAIT; 1289 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT)) 1290 { 1291 fdc_intr(fd->fdc); 1292 } 1293 splx(s); 1294 } 1295 1296 static void 1297 fd_turnon(fd_p fd) 1298 { 1299 if(!(fd->flags & FD_MOTOR)) 1300 { 1301 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT); 1302 set_motor(fd->fdc, fd->fdsu, TURNON); 1303 timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */ 1304 } 1305 } 1306 1307 static void 1308 fdc_reset(fdc_p fdc) 1309 { 1310 /* Try a reset, keep motor on */ 1311 fdout_wr(fdc, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1312 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1313 DELAY(100); 1314 /* enable FDC, but defer interrupts a moment */ 1315 fdout_wr(fdc, fdc->fdout & ~FDO_FDMAEN); 1316 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN); 1317 DELAY(100); 1318 fdout_wr(fdc, fdc->fdout); 1319 TRACE1("[0x%x->FDOUT]", fdc->fdout); 1320 1321 /* XXX after a reset, silently believe the FDC will accept commands */ 1322 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1323 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1324 0); 1325 if (fdc->flags & FDC_HAS_FIFO) 1326 (void) enable_fifo(fdc); 1327 } 1328 1329 /****************************************************************************/ 1330 /* fdc in/out */ 1331 /****************************************************************************/ 1332 int 1333 in_fdc(struct fdc_data *fdc) 1334 { 1335 int i, j = 100000; 1336 while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) 1337 != (NE7_DIO|NE7_RQM) && j-- > 0) 1338 if (i == NE7_RQM) 1339 return fdc_err(fdc, "ready for output in input\n"); 1340 if (j <= 0) 1341 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1342 #ifdef FDC_DEBUG 1343 i = fddata_rd(fdc); 1344 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1345 return(i); 1346 #else /* !FDC_DEBUG */ 1347 return fddata_rd(fdc); 1348 #endif /* FDC_DEBUG */ 1349 } 1350 1351 /* 1352 * fd_in: Like in_fdc, but allows you to see if it worked. 1353 */ 1354 static int 1355 fd_in(struct fdc_data *fdc, int *ptr) 1356 { 1357 int i, j = 100000; 1358 while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) 1359 != (NE7_DIO|NE7_RQM) && j-- > 0) 1360 if (i == NE7_RQM) 1361 return fdc_err(fdc, "ready for output in input\n"); 1362 if (j <= 0) 1363 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1364 #ifdef FDC_DEBUG 1365 i = fddata_rd(fdc); 1366 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1367 *ptr = i; 1368 return 0; 1369 #else /* !FDC_DEBUG */ 1370 i = fddata_rd(fdc); 1371 if (ptr) 1372 *ptr = i; 1373 return 0; 1374 #endif /* FDC_DEBUG */ 1375 } 1376 1377 int 1378 out_fdc(struct fdc_data *fdc, int x) 1379 { 1380 int i; 1381 1382 /* Check that the direction bit is set */ 1383 i = 100000; 1384 while ((fdsts_rd(fdc) & NE7_DIO) && i-- > 0); 1385 if (i <= 0) return fdc_err(fdc, "direction bit not set\n"); 1386 1387 /* Check that the floppy controller is ready for a command */ 1388 i = 100000; 1389 while ((fdsts_rd(fdc) & NE7_RQM) == 0 && i-- > 0); 1390 if (i <= 0) 1391 return fdc_err(fdc, bootverbose? "output ready timeout\n": 0); 1392 1393 /* Send the command and return */ 1394 fddata_wr(fdc, x); 1395 TRACE1("[0x%x->FDDATA]", x); 1396 return (0); 1397 } 1398 1399 /****************************************************************************/ 1400 /* fdopen/fdclose */ 1401 /****************************************************************************/ 1402 int 1403 Fdopen(dev_t dev, int flags, int mode, struct proc *p) 1404 { 1405 fdu_t fdu = FDUNIT(minor(dev)); 1406 int type = FDTYPE(minor(dev)); 1407 fd_p fd; 1408 fdc_p fdc; 1409 1410 /* check bounds */ 1411 if ((fd = devclass_get_softc(fd_devclass, fdu)) == 0) 1412 return (ENXIO); 1413 fdc = fd->fdc; 1414 if ((fdc == NULL) || (fd->type == NO_TYPE)) 1415 return (ENXIO); 1416 if (type > NUMDENS) 1417 return (ENXIO); 1418 if (type == 0) 1419 type = fd->type; 1420 else { 1421 /* 1422 * For each type of basic drive, make sure we are trying 1423 * to open a type it can do, 1424 */ 1425 if (type != fd->type) { 1426 switch (fd->type) { 1427 case FD_360: 1428 return (ENXIO); 1429 case FD_720: 1430 if ( type != FD_820 1431 && type != FD_800 1432 && type != FD_640 1433 ) 1434 return (ENXIO); 1435 break; 1436 case FD_1200: 1437 switch (type) { 1438 case FD_1480: 1439 type = FD_1480in5_25; 1440 break; 1441 case FD_1440: 1442 type = FD_1440in5_25; 1443 break; 1444 case FD_1232: 1445 break; 1446 case FD_820: 1447 type = FD_820in5_25; 1448 break; 1449 case FD_800: 1450 type = FD_800in5_25; 1451 break; 1452 case FD_720: 1453 type = FD_720in5_25; 1454 break; 1455 case FD_640: 1456 type = FD_640in5_25; 1457 break; 1458 case FD_360: 1459 type = FD_360in5_25; 1460 break; 1461 default: 1462 return(ENXIO); 1463 } 1464 break; 1465 case FD_1440: 1466 if ( type != FD_1720 1467 && type != FD_1480 1468 && type != FD_1200 1469 && type != FD_820 1470 && type != FD_800 1471 && type != FD_720 1472 && type != FD_640 1473 ) 1474 return(ENXIO); 1475 break; 1476 } 1477 } 1478 } 1479 fd->ft = fd_types + type - 1; 1480 fd->flags |= FD_OPEN; 1481 1482 return 0; 1483 } 1484 1485 int 1486 fdclose(dev_t dev, int flags, int mode, struct proc *p) 1487 { 1488 fdu_t fdu = FDUNIT(minor(dev)); 1489 struct fd_data *fd; 1490 1491 fd = devclass_get_softc(fd_devclass, fdu); 1492 fd->flags &= ~FD_OPEN; 1493 fd->options &= ~(FDOPT_NORETRY | FDOPT_NOERRLOG | FDOPT_NOERROR); 1494 1495 return (0); 1496 } 1497 1498 /****************************************************************************/ 1499 /* fdstrategy */ 1500 /****************************************************************************/ 1501 void 1502 fdstrategy(struct bio *bp) 1503 { 1504 unsigned nblocks, blknum, cando; 1505 int s; 1506 fdu_t fdu; 1507 fdc_p fdc; 1508 fd_p fd; 1509 size_t fdblk; 1510 1511 fdu = FDUNIT(minor(bp->bio_dev)); 1512 fd = devclass_get_softc(fd_devclass, fdu); 1513 if (fd == 0) 1514 panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)", 1515 (u_long)major(bp->bio_dev), (u_long)minor(bp->bio_dev)); 1516 fdc = fd->fdc; 1517 if (fd->type == NO_TYPE) { 1518 bp->bio_error = ENXIO; 1519 bp->bio_flags |= BIO_ERROR; 1520 goto bad; 1521 }; 1522 1523 fdblk = 128 << (fd->ft->secsize); 1524 if (!(bp->bio_cmd & BIO_FORMAT)) { 1525 if (bp->bio_blkno < 0) { 1526 printf( 1527 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n", 1528 fdu, (u_long)bp->bio_blkno, bp->bio_bcount); 1529 bp->bio_error = EINVAL; 1530 bp->bio_flags |= BIO_ERROR; 1531 goto bad; 1532 } 1533 if ((bp->bio_bcount % fdblk) != 0) { 1534 bp->bio_error = EINVAL; 1535 bp->bio_flags |= BIO_ERROR; 1536 goto bad; 1537 } 1538 } 1539 1540 /* 1541 * Set up block calculations. 1542 */ 1543 if (bp->bio_blkno > 20000000) { 1544 /* 1545 * Reject unreasonably high block number, prevent the 1546 * multiplication below from overflowing. 1547 */ 1548 bp->bio_error = EINVAL; 1549 bp->bio_flags |= BIO_ERROR; 1550 goto bad; 1551 } 1552 blknum = (unsigned) bp->bio_blkno * DEV_BSIZE/fdblk; 1553 nblocks = fd->ft->size; 1554 bp->bio_resid = 0; 1555 if (blknum + (bp->bio_bcount / fdblk) > nblocks) { 1556 if (blknum <= nblocks) { 1557 cando = (nblocks - blknum) * fdblk; 1558 bp->bio_resid = bp->bio_bcount - cando; 1559 if (cando == 0) 1560 goto bad; /* not actually bad but EOF */ 1561 } else { 1562 bp->bio_error = EINVAL; 1563 bp->bio_flags |= BIO_ERROR; 1564 goto bad; 1565 } 1566 } 1567 bp->bio_pblkno = bp->bio_blkno; 1568 s = splbio(); 1569 bioqdisksort(&fdc->head, bp); 1570 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */ 1571 1572 /* Tell devstat we are starting on the transaction */ 1573 devstat_start_transaction(&fd->device_stats); 1574 device_busy(fd->dev); 1575 1576 fdstart(fdc); 1577 splx(s); 1578 return; 1579 1580 bad: 1581 biodone(bp); 1582 } 1583 1584 /***************************************************************\ 1585 * fdstart * 1586 * We have just queued something.. if the controller is not busy * 1587 * then simulate the case where it has just finished a command * 1588 * So that it (the interrupt routine) looks on the queue for more* 1589 * work to do and picks up what we just added. * 1590 * If the controller is already busy, we need do nothing, as it * 1591 * will pick up our work when the present work completes * 1592 \***************************************************************/ 1593 static void 1594 fdstart(struct fdc_data *fdc) 1595 { 1596 int s; 1597 1598 s = splbio(); 1599 if(fdc->state == DEVIDLE) 1600 { 1601 fdc_intr(fdc); 1602 } 1603 splx(s); 1604 } 1605 1606 static void 1607 fd_iotimeout(void *xfdc) 1608 { 1609 fdc_p fdc; 1610 int s; 1611 1612 fdc = xfdc; 1613 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); 1614 1615 /* 1616 * Due to IBM's brain-dead design, the FDC has a faked ready 1617 * signal, hardwired to ready == true. Thus, any command 1618 * issued if there's no diskette in the drive will _never_ 1619 * complete, and must be aborted by resetting the FDC. 1620 * Many thanks, Big Blue! 1621 * The FDC must not be reset directly, since that would 1622 * interfere with the state machine. Instead, pretend that 1623 * the command completed but was invalid. The state machine 1624 * will reset the FDC and retry once. 1625 */ 1626 s = splbio(); 1627 fdc->status[0] = NE7_ST0_IC_IV; 1628 fdc->flags &= ~FDC_STAT_VALID; 1629 fdc->state = IOTIMEDOUT; 1630 fdc_intr(fdc); 1631 splx(s); 1632 } 1633 1634 /* just ensure it has the right spl */ 1635 static void 1636 fd_pseudointr(void *xfdc) 1637 { 1638 int s; 1639 1640 s = splbio(); 1641 fdc_intr(xfdc); 1642 splx(s); 1643 } 1644 1645 /***********************************************************************\ 1646 * fdintr * 1647 * keep calling the state machine until it returns a 0 * 1648 * ALWAYS called at SPLBIO * 1649 \***********************************************************************/ 1650 static void 1651 fdc_intr(void *xfdc) 1652 { 1653 fdc_p fdc = xfdc; 1654 while(fdstate(fdc)) 1655 ; 1656 } 1657 1658 /* 1659 * magic pseudo-DMA initialization for YE FDC. Sets count and 1660 * direction 1661 */ 1662 #define SET_BCDR(fdc,wr,cnt,port) \ 1663 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port, \ 1664 ((cnt)-1) & 0xff); \ 1665 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port + 1, \ 1666 ((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))); 1667 1668 /* 1669 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy 1670 */ 1671 static int fdcpio(fdc_p fdc, long flags, caddr_t addr, u_int count) 1672 { 1673 u_char *cptr = (u_char *)addr; 1674 1675 if (flags == BIO_READ) { 1676 if (fdc->state != PIOREAD) { 1677 fdc->state = PIOREAD; 1678 return(0); 1679 }; 1680 SET_BCDR(fdc, 0, count, 0); 1681 bus_space_read_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1682 FDC_YE_DATAPORT, cptr, count); 1683 } else { 1684 bus_space_write_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1685 FDC_YE_DATAPORT, cptr, count); 1686 SET_BCDR(fdc, 0, count, 0); 1687 }; 1688 return(1); 1689 } 1690 1691 /***********************************************************************\ 1692 * The controller state machine. * 1693 * if it returns a non zero value, it should be called again immediatly * 1694 \***********************************************************************/ 1695 static int 1696 fdstate(fdc_p fdc) 1697 { 1698 int read, format, head, i, sec = 0, sectrac, st0, cyl, st3, idf; 1699 unsigned blknum = 0, b_cylinder = 0; 1700 fdu_t fdu = fdc->fdu; 1701 fd_p fd; 1702 register struct bio *bp; 1703 struct fd_formb *finfo = NULL; 1704 size_t fdblk; 1705 1706 bp = fdc->bp; 1707 if (bp == NULL) { 1708 bp = bioq_first(&fdc->head); 1709 if (bp != NULL) { 1710 bioq_remove(&fdc->head, bp); 1711 fdc->bp = bp; 1712 } 1713 } 1714 if (bp == NULL) { 1715 /***********************************************\ 1716 * nothing left for this controller to do * 1717 * Force into the IDLE state, * 1718 \***********************************************/ 1719 fdc->state = DEVIDLE; 1720 if (fdc->fd) { 1721 device_printf(fdc->fdc_dev, 1722 "unexpected valid fd pointer\n"); 1723 fdc->fd = (fd_p) 0; 1724 fdc->fdu = -1; 1725 } 1726 TRACE1("[fdc%d IDLE]", fdc->fdcu); 1727 return (0); 1728 } 1729 fdu = FDUNIT(minor(bp->bio_dev)); 1730 fd = devclass_get_softc(fd_devclass, fdu); 1731 fdblk = 128 << fd->ft->secsize; 1732 if (fdc->fd && (fd != fdc->fd)) 1733 device_printf(fd->dev, "confused fd pointers\n"); 1734 read = bp->bio_cmd == BIO_READ; 1735 if (read) 1736 idf = ISADMA_READ; 1737 else 1738 idf = ISADMA_WRITE; 1739 format = bp->bio_cmd & BIO_FORMAT; 1740 if (format) { 1741 finfo = (struct fd_formb *)bp->bio_data; 1742 fd->skip = (char *)&(finfo->fd_formb_cylno(0)) 1743 - (char *)finfo; 1744 } 1745 if (fdc->state == DOSEEK || fdc->state == SEEKCOMPLETE) { 1746 blknum = (unsigned) bp->bio_pblkno * DEV_BSIZE/fdblk + 1747 fd->skip/fdblk; 1748 b_cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 1749 } 1750 TRACE1("fd%d", fdu); 1751 TRACE1("[%s]", fdstates[fdc->state]); 1752 TRACE1("(0x%x)", fd->flags); 1753 untimeout(fd_turnoff, fd, fd->toffhandle); 1754 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 1755 switch (fdc->state) 1756 { 1757 case DEVIDLE: 1758 case FINDWORK: /* we have found new work */ 1759 fdc->retry = 0; 1760 fd->skip = 0; 1761 fdc->fd = fd; 1762 fdc->fdu = fdu; 1763 fdc->fdctl_wr(fdc, fd->ft->trans); 1764 TRACE1("[0x%x->FDCTL]", fd->ft->trans); 1765 /*******************************************************\ 1766 * If the next drive has a motor startup pending, then * 1767 * it will start up in its own good time * 1768 \*******************************************************/ 1769 if(fd->flags & FD_MOTOR_WAIT) { 1770 fdc->state = MOTORWAIT; 1771 return (0); /* come back later */ 1772 } 1773 /*******************************************************\ 1774 * Maybe if it's not starting, it SHOULD be starting * 1775 \*******************************************************/ 1776 if (!(fd->flags & FD_MOTOR)) 1777 { 1778 fdc->state = MOTORWAIT; 1779 fd_turnon(fd); 1780 return (0); 1781 } 1782 else /* at least make sure we are selected */ 1783 { 1784 set_motor(fdc, fd->fdsu, TURNON); 1785 } 1786 if (fdc->flags & FDC_NEEDS_RESET) { 1787 fdc->state = RESETCTLR; 1788 fdc->flags &= ~FDC_NEEDS_RESET; 1789 } else 1790 fdc->state = DOSEEK; 1791 break; 1792 case DOSEEK: 1793 if (b_cylinder == (unsigned)fd->track) 1794 { 1795 fdc->state = SEEKCOMPLETE; 1796 break; 1797 } 1798 if (fd_cmd(fdc, 3, NE7CMD_SEEK, 1799 fd->fdsu, b_cylinder * fd->ft->steptrac, 1800 0)) 1801 { 1802 /* 1803 * seek command not accepted, looks like 1804 * the FDC went off to the Saints... 1805 */ 1806 fdc->retry = 6; /* try a reset */ 1807 return(retrier(fdc)); 1808 } 1809 fd->track = FD_NO_TRACK; 1810 fdc->state = SEEKWAIT; 1811 return(0); /* will return later */ 1812 case SEEKWAIT: 1813 /* allow heads to settle */ 1814 timeout(fd_pseudointr, fdc, hz / 16); 1815 fdc->state = SEEKCOMPLETE; 1816 return(0); /* will return later */ 1817 case SEEKCOMPLETE : /* SEEK DONE, START DMA */ 1818 /* Make sure seek really happened*/ 1819 if(fd->track == FD_NO_TRACK) { 1820 int descyl = b_cylinder * fd->ft->steptrac; 1821 do { 1822 /* 1823 * This might be a "ready changed" interrupt, 1824 * which cannot really happen since the 1825 * RDY pin is hardwired to + 5 volts. This 1826 * generally indicates a "bouncing" intr 1827 * line, so do one of the following: 1828 * 1829 * When running on an enhanced FDC that is 1830 * known to not go stuck after responding 1831 * with INVALID, fetch all interrupt states 1832 * until seeing either an INVALID or a 1833 * real interrupt condition. 1834 * 1835 * When running on a dumb old NE765, give 1836 * up immediately. The controller will 1837 * provide up to four dummy RC interrupt 1838 * conditions right after reset (for the 1839 * corresponding four drives), so this is 1840 * our only chance to get notice that it 1841 * was not the FDC that caused the interrupt. 1842 */ 1843 if (fd_sense_int(fdc, &st0, &cyl) 1844 == FD_NOT_VALID) 1845 return 0; 1846 if(fdc->fdct == FDC_NE765 1847 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 1848 return 0; /* hope for a real intr */ 1849 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 1850 1851 if (0 == descyl) { 1852 int failed = 0; 1853 /* 1854 * seek to cyl 0 requested; make sure we are 1855 * really there 1856 */ 1857 if (fd_sense_drive_status(fdc, &st3)) 1858 failed = 1; 1859 if ((st3 & NE7_ST3_T0) == 0) { 1860 printf( 1861 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", 1862 fdu, st3, NE7_ST3BITS); 1863 failed = 1; 1864 } 1865 1866 if (failed) { 1867 if(fdc->retry < 3) 1868 fdc->retry = 3; 1869 return (retrier(fdc)); 1870 } 1871 } 1872 1873 if (cyl != descyl) { 1874 printf( 1875 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", 1876 fdu, descyl, cyl, st0); 1877 if (fdc->retry < 3) 1878 fdc->retry = 3; 1879 return (retrier(fdc)); 1880 } 1881 } 1882 1883 fd->track = b_cylinder; 1884 if (!(fdc->flags & FDC_NODMA)) 1885 isa_dmastart(idf, bp->bio_data+fd->skip, 1886 format ? bp->bio_bcount : fdblk, fdc->dmachan); 1887 sectrac = fd->ft->sectrac; 1888 sec = blknum % (sectrac * fd->ft->heads); 1889 head = sec / sectrac; 1890 sec = sec % sectrac + 1; 1891 fd->hddrv = ((head&1)<<2)+fdu; 1892 1893 if(format || !read) 1894 { 1895 /* make sure the drive is writable */ 1896 if(fd_sense_drive_status(fdc, &st3) != 0) 1897 { 1898 /* stuck controller? */ 1899 if (!(fdc->flags & FDC_NODMA)) 1900 isa_dmadone(idf, 1901 bp->bio_data + fd->skip, 1902 format ? bp->bio_bcount : fdblk, 1903 fdc->dmachan); 1904 fdc->retry = 6; /* reset the beast */ 1905 return (retrier(fdc)); 1906 } 1907 if(st3 & NE7_ST3_WP) 1908 { 1909 /* 1910 * XXX YES! this is ugly. 1911 * in order to force the current operation 1912 * to fail, we will have to fake an FDC 1913 * error - all error handling is done 1914 * by the retrier() 1915 */ 1916 fdc->status[0] = NE7_ST0_IC_AT; 1917 fdc->status[1] = NE7_ST1_NW; 1918 fdc->status[2] = 0; 1919 fdc->status[3] = fd->track; 1920 fdc->status[4] = head; 1921 fdc->status[5] = sec; 1922 fdc->retry = 8; /* break out immediately */ 1923 fdc->state = IOTIMEDOUT; /* not really... */ 1924 return (1); 1925 } 1926 } 1927 1928 if (format) { 1929 if (fdc->flags & FDC_NODMA) { 1930 /* 1931 * This seems to be necessary for 1932 * whatever obscure reason; if we omit 1933 * it, we end up filling the sector ID 1934 * fields of the newly formatted track 1935 * entirely with garbage, causing 1936 * `wrong cylinder' errors all over 1937 * the place when trying to read them 1938 * back. 1939 * 1940 * Umpf. 1941 */ 1942 SET_BCDR(fdc, 1, bp->bio_bcount, 0); 1943 1944 (void)fdcpio(fdc,bp->bio_cmd, 1945 bp->bio_data+fd->skip, 1946 bp->bio_bcount); 1947 1948 } 1949 /* formatting */ 1950 if(fd_cmd(fdc, 6, NE7CMD_FORMAT, head << 2 | fdu, 1951 finfo->fd_formb_secshift, 1952 finfo->fd_formb_nsecs, 1953 finfo->fd_formb_gaplen, 1954 finfo->fd_formb_fillbyte, 0)) { 1955 /* controller fell over */ 1956 if (!(fdc->flags & FDC_NODMA)) 1957 isa_dmadone(idf, 1958 bp->bio_data + fd->skip, 1959 format ? bp->bio_bcount : fdblk, 1960 fdc->dmachan); 1961 fdc->retry = 6; 1962 return (retrier(fdc)); 1963 } 1964 } else { 1965 if (fdc->flags & FDC_NODMA) { 1966 /* 1967 * this seems to be necessary even when 1968 * reading data 1969 */ 1970 SET_BCDR(fdc, 1, fdblk, 0); 1971 1972 /* 1973 * perform the write pseudo-DMA before 1974 * the WRITE command is sent 1975 */ 1976 if (!read) 1977 (void)fdcpio(fdc,bp->bio_cmd, 1978 bp->bio_data+fd->skip, 1979 fdblk); 1980 } 1981 if (fd_cmd(fdc, 9, 1982 (read ? NE7CMD_READ : NE7CMD_WRITE), 1983 head << 2 | fdu, /* head & unit */ 1984 fd->track, /* track */ 1985 head, 1986 sec, /* sector + 1 */ 1987 fd->ft->secsize, /* sector size */ 1988 sectrac, /* sectors/track */ 1989 fd->ft->gap, /* gap size */ 1990 fd->ft->datalen, /* data length */ 1991 0)) { 1992 /* the beast is sleeping again */ 1993 if (!(fdc->flags & FDC_NODMA)) 1994 isa_dmadone(idf, 1995 bp->bio_data + fd->skip, 1996 format ? bp->bio_bcount : fdblk, 1997 fdc->dmachan); 1998 fdc->retry = 6; 1999 return (retrier(fdc)); 2000 } 2001 } 2002 if (fdc->flags & FDC_NODMA) 2003 /* 2004 * if this is a read, then simply await interrupt 2005 * before performing PIO 2006 */ 2007 if (read && !fdcpio(fdc,bp->bio_cmd, 2008 bp->bio_data+fd->skip,fdblk)) { 2009 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 2010 return(0); /* will return later */ 2011 }; 2012 2013 /* 2014 * write (or format) operation will fall through and 2015 * await completion interrupt 2016 */ 2017 fdc->state = IOCOMPLETE; 2018 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 2019 return (0); /* will return later */ 2020 case PIOREAD: 2021 /* 2022 * actually perform the PIO read. The IOCOMPLETE case 2023 * removes the timeout for us. 2024 */ 2025 (void)fdcpio(fdc,bp->bio_cmd,bp->bio_data+fd->skip,fdblk); 2026 fdc->state = IOCOMPLETE; 2027 /* FALLTHROUGH */ 2028 case IOCOMPLETE: /* IO DONE, post-analyze */ 2029 untimeout(fd_iotimeout, fdc, fd->tohandle); 2030 2031 if (fd_read_status(fdc, fd->fdsu)) { 2032 if (!(fdc->flags & FDC_NODMA)) 2033 isa_dmadone(idf, bp->bio_data + fd->skip, 2034 format ? bp->bio_bcount : fdblk, 2035 fdc->dmachan); 2036 if (fdc->retry < 6) 2037 fdc->retry = 6; /* force a reset */ 2038 return (retrier(fdc)); 2039 } 2040 2041 fdc->state = IOTIMEDOUT; 2042 2043 /* FALLTHROUGH */ 2044 2045 case IOTIMEDOUT: 2046 if (!(fdc->flags & FDC_NODMA)) 2047 isa_dmadone(idf, bp->bio_data + fd->skip, 2048 format ? bp->bio_bcount : fdblk, fdc->dmachan); 2049 if (fdc->status[0] & NE7_ST0_IC) { 2050 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2051 && fdc->status[1] & NE7_ST1_OR) { 2052 /* 2053 * DMA overrun. Someone hogged the bus 2054 * and didn't release it in time for the 2055 * next FDC transfer. 2056 * Just restart it, don't increment retry 2057 * count. (vak) 2058 */ 2059 fdc->state = SEEKCOMPLETE; 2060 return (1); 2061 } 2062 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV 2063 && fdc->retry < 6) 2064 fdc->retry = 6; /* force a reset */ 2065 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2066 && fdc->status[2] & NE7_ST2_WC 2067 && fdc->retry < 3) 2068 fdc->retry = 3; /* force recalibrate */ 2069 return (retrier(fdc)); 2070 } 2071 /* All OK */ 2072 fd->skip += fdblk; 2073 if (!format && fd->skip < bp->bio_bcount - bp->bio_resid) { 2074 /* set up next transfer */ 2075 fdc->state = DOSEEK; 2076 } else { 2077 /* ALL DONE */ 2078 fd->skip = 0; 2079 fdc->bp = NULL; 2080 device_unbusy(fd->dev); 2081 biofinish(bp, &fd->device_stats, 0); 2082 fdc->fd = (fd_p) 0; 2083 fdc->fdu = -1; 2084 fdc->state = FINDWORK; 2085 } 2086 return (1); 2087 case RESETCTLR: 2088 fdc_reset(fdc); 2089 fdc->retry++; 2090 fdc->state = RESETCOMPLETE; 2091 return (0); 2092 case RESETCOMPLETE: 2093 /* 2094 * Discard all the results from the reset so that they 2095 * can't cause an unexpected interrupt later. 2096 */ 2097 for (i = 0; i < 4; i++) 2098 (void)fd_sense_int(fdc, &st0, &cyl); 2099 fdc->state = STARTRECAL; 2100 /* Fall through. */ 2101 case STARTRECAL: 2102 if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) { 2103 /* arrgl */ 2104 fdc->retry = 6; 2105 return (retrier(fdc)); 2106 } 2107 fdc->state = RECALWAIT; 2108 return (0); /* will return later */ 2109 case RECALWAIT: 2110 /* allow heads to settle */ 2111 timeout(fd_pseudointr, fdc, hz / 8); 2112 fdc->state = RECALCOMPLETE; 2113 return (0); /* will return later */ 2114 case RECALCOMPLETE: 2115 do { 2116 /* 2117 * See SEEKCOMPLETE for a comment on this: 2118 */ 2119 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 2120 return 0; 2121 if(fdc->fdct == FDC_NE765 2122 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 2123 return 0; /* hope for a real intr */ 2124 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 2125 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0) 2126 { 2127 if(fdc->retry > 3) 2128 /* 2129 * a recalibrate from beyond cylinder 77 2130 * will "fail" due to the FDC limitations; 2131 * since people used to complain much about 2132 * the failure message, try not logging 2133 * this one if it seems to be the first 2134 * time in a line 2135 */ 2136 printf("fd%d: recal failed ST0 %b cyl %d\n", 2137 fdu, st0, NE7_ST0BITS, cyl); 2138 if(fdc->retry < 3) fdc->retry = 3; 2139 return (retrier(fdc)); 2140 } 2141 fd->track = 0; 2142 /* Seek (probably) necessary */ 2143 fdc->state = DOSEEK; 2144 return (1); /* will return immediatly */ 2145 case MOTORWAIT: 2146 if(fd->flags & FD_MOTOR_WAIT) 2147 { 2148 return (0); /* time's not up yet */ 2149 } 2150 if (fdc->flags & FDC_NEEDS_RESET) { 2151 fdc->state = RESETCTLR; 2152 fdc->flags &= ~FDC_NEEDS_RESET; 2153 } else { 2154 /* 2155 * If all motors were off, then the controller was 2156 * reset, so it has lost track of the current 2157 * cylinder. Recalibrate to handle this case. 2158 * But first, discard the results of the reset. 2159 */ 2160 fdc->state = RESETCOMPLETE; 2161 } 2162 return (1); /* will return immediatly */ 2163 default: 2164 device_printf(fdc->fdc_dev, "unexpected FD int->"); 2165 if (fd_read_status(fdc, fd->fdsu) == 0) 2166 printf("FDC status :%x %x %x %x %x %x %x ", 2167 fdc->status[0], 2168 fdc->status[1], 2169 fdc->status[2], 2170 fdc->status[3], 2171 fdc->status[4], 2172 fdc->status[5], 2173 fdc->status[6] ); 2174 else 2175 printf("No status available "); 2176 if (fd_sense_int(fdc, &st0, &cyl) != 0) 2177 { 2178 printf("[controller is dead now]\n"); 2179 return (0); 2180 } 2181 printf("ST0 = %x, PCN = %x\n", st0, cyl); 2182 return (0); 2183 } 2184 /*XXX confusing: some branches return immediately, others end up here*/ 2185 return (1); /* Come back immediatly to new state */ 2186 } 2187 2188 static int 2189 retrier(struct fdc_data *fdc) 2190 { 2191 struct bio *bp; 2192 struct fd_data *fd; 2193 int fdu; 2194 2195 bp = fdc->bp; 2196 2197 /* XXX shouldn't this be cached somewhere? */ 2198 fdu = FDUNIT(minor(bp->bio_dev)); 2199 fd = devclass_get_softc(fd_devclass, fdu); 2200 if (fd->options & FDOPT_NORETRY) 2201 goto fail; 2202 2203 switch (fdc->retry) { 2204 case 0: case 1: case 2: 2205 fdc->state = SEEKCOMPLETE; 2206 break; 2207 case 3: case 4: case 5: 2208 fdc->state = STARTRECAL; 2209 break; 2210 case 6: 2211 fdc->state = RESETCTLR; 2212 break; 2213 case 7: 2214 break; 2215 default: 2216 fail: 2217 { 2218 int printerror = (fd->options & FDOPT_NOERRLOG) == 0; 2219 2220 if (printerror) 2221 diskerr(bp, "hard error", fdc->fd->skip / DEV_BSIZE, 2222 (struct disklabel *)NULL); 2223 if (printerror) { 2224 if (fdc->flags & FDC_STAT_VALID) 2225 { 2226 printf( 2227 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n", 2228 fdc->status[0], NE7_ST0BITS, 2229 fdc->status[1], NE7_ST1BITS, 2230 fdc->status[2], NE7_ST2BITS, 2231 fdc->status[3], fdc->status[4], 2232 fdc->status[5]); 2233 } 2234 else 2235 printf(" (No status)\n"); 2236 } 2237 } 2238 if ((fd->options & FDOPT_NOERROR) == 0) { 2239 bp->bio_flags |= BIO_ERROR; 2240 bp->bio_error = EIO; 2241 bp->bio_resid += bp->bio_bcount - fdc->fd->skip; 2242 } 2243 fdc->bp = NULL; 2244 fdc->fd->skip = 0; 2245 device_unbusy(fd->dev); 2246 biofinish(bp, &fdc->fd->device_stats, 0); 2247 fdc->state = FINDWORK; 2248 fdc->flags |= FDC_NEEDS_RESET; 2249 fdc->fd = (fd_p) 0; 2250 fdc->fdu = -1; 2251 return (1); 2252 } 2253 fdc->retry++; 2254 return (1); 2255 } 2256 2257 static void 2258 fdbiodone(struct bio *bp) 2259 { 2260 wakeup(bp); 2261 } 2262 2263 static int 2264 fdformat(dev, finfo, p) 2265 dev_t dev; 2266 struct fd_formb *finfo; 2267 struct proc *p; 2268 { 2269 fdu_t fdu; 2270 fd_p fd; 2271 2272 struct bio *bp; 2273 int rv = 0, s; 2274 size_t fdblk; 2275 2276 fdu = FDUNIT(minor(dev)); 2277 fd = devclass_get_softc(fd_devclass, fdu); 2278 fdblk = 128 << fd->ft->secsize; 2279 2280 /* set up a buffer header for fdstrategy() */ 2281 bp = (struct bio *)malloc(sizeof(struct bio), M_TEMP, M_NOWAIT); 2282 if(bp == 0) 2283 return ENOMEM; 2284 /* 2285 * keep the process from being swapped 2286 */ 2287 PHOLD(p); 2288 bzero((void *)bp, sizeof(*bp)); 2289 bp->bio_cmd = BIO_FORMAT; 2290 2291 /* 2292 * calculate a fake blkno, so fdstrategy() would initiate a 2293 * seek to the requested cylinder 2294 */ 2295 bp->bio_blkno = (finfo->cyl * (fd->ft->sectrac * fd->ft->heads) 2296 + finfo->head * fd->ft->sectrac) * fdblk / DEV_BSIZE; 2297 2298 bp->bio_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2299 bp->bio_data = (caddr_t)finfo; 2300 2301 /* now do the format */ 2302 bp->bio_dev = dev; 2303 bp->bio_done = fdbiodone; 2304 fdstrategy(bp); 2305 2306 /* ...and wait for it to complete */ 2307 s = splbio(); 2308 while(!(bp->bio_flags & BIO_DONE)) { 2309 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2310 if (rv == EWOULDBLOCK) 2311 break; 2312 } 2313 splx(s); 2314 2315 if (rv == EWOULDBLOCK) { 2316 /* timed out */ 2317 rv = EIO; 2318 device_unbusy(fd->dev); 2319 } 2320 if (bp->bio_flags & BIO_ERROR) 2321 rv = bp->bio_error; 2322 /* 2323 * allow the process to be swapped 2324 */ 2325 PRELE(p); 2326 free(bp, M_TEMP); 2327 return rv; 2328 } 2329 2330 /* 2331 * TODO: don't allocate buffer on stack. 2332 */ 2333 2334 static int 2335 fdioctl(dev, cmd, addr, flag, p) 2336 dev_t dev; 2337 u_long cmd; 2338 caddr_t addr; 2339 int flag; 2340 struct proc *p; 2341 { 2342 fdu_t fdu = FDUNIT(minor(dev)); 2343 fd_p fd = devclass_get_softc(fd_devclass, fdu); 2344 size_t fdblk; 2345 2346 struct fd_type *fdt; 2347 struct disklabel *dl; 2348 struct fdc_status *fsp; 2349 char buffer[DEV_BSIZE]; 2350 int error = 0; 2351 2352 fdblk = 128 << fd->ft->secsize; 2353 2354 switch (cmd) { 2355 case DIOCGDINFO: 2356 bzero(buffer, sizeof (buffer)); 2357 dl = (struct disklabel *)buffer; 2358 dl->d_secsize = fdblk; 2359 fdt = fd->ft; 2360 dl->d_secpercyl = fdt->size / fdt->tracks; 2361 dl->d_type = DTYPE_FLOPPY; 2362 2363 if (readdisklabel(dkmodpart(dev, RAW_PART), dl) 2364 == NULL) 2365 error = 0; 2366 else 2367 error = EINVAL; 2368 2369 *(struct disklabel *)addr = *dl; 2370 break; 2371 2372 case DIOCSDINFO: 2373 if ((flag & FWRITE) == 0) 2374 error = EBADF; 2375 break; 2376 2377 case DIOCWLABEL: 2378 if ((flag & FWRITE) == 0) 2379 error = EBADF; 2380 break; 2381 2382 case DIOCWDINFO: 2383 if ((flag & FWRITE) == 0) { 2384 error = EBADF; 2385 break; 2386 } 2387 2388 dl = (struct disklabel *)addr; 2389 2390 if ((error = setdisklabel((struct disklabel *)buffer, dl, 2391 (u_long)0)) != 0) 2392 break; 2393 2394 error = writedisklabel(dev, (struct disklabel *)buffer); 2395 break; 2396 case FD_FORM: 2397 if ((flag & FWRITE) == 0) 2398 error = EBADF; /* must be opened for writing */ 2399 else if (((struct fd_formb *)addr)->format_version != 2400 FD_FORMAT_VERSION) 2401 error = EINVAL; /* wrong version of formatting prog */ 2402 else 2403 error = fdformat(dev, (struct fd_formb *)addr, p); 2404 break; 2405 2406 case FD_GTYPE: /* get drive type */ 2407 *(struct fd_type *)addr = *fd->ft; 2408 break; 2409 2410 case FD_STYPE: /* set drive type */ 2411 /* this is considered harmful; only allow for superuser */ 2412 if (suser(p) != 0) 2413 return EPERM; 2414 *fd->ft = *(struct fd_type *)addr; 2415 break; 2416 2417 case FD_GOPTS: /* get drive options */ 2418 *(int *)addr = fd->options; 2419 break; 2420 2421 case FD_SOPTS: /* set drive options */ 2422 fd->options = *(int *)addr; 2423 break; 2424 2425 case FD_CLRERR: 2426 if (suser(p) != 0) 2427 return EPERM; 2428 fd->fdc->fdc_errs = 0; 2429 break; 2430 2431 case FD_GSTAT: 2432 fsp = (struct fdc_status *)addr; 2433 if ((fd->fdc->flags & FDC_STAT_VALID) == 0) 2434 return EINVAL; 2435 memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); 2436 break; 2437 2438 default: 2439 error = ENOTTY; 2440 break; 2441 } 2442 return (error); 2443 } 2444 2445 /* 2446 * Hello emacs, these are the 2447 * Local Variables: 2448 * c-indent-level: 8 2449 * c-continued-statement-offset: 8 2450 * c-continued-brace-offset: 0 2451 * c-brace-offset: -8 2452 * c-brace-imaginary-offset: 0 2453 * c-argdecl-indent: 8 2454 * c-label-offset: -8 2455 * c++-hanging-braces: 1 2456 * c++-access-specifier-offset: -8 2457 * c++-empty-arglist-indent: 8 2458 * c++-friend-offset: 0 2459 * End: 2460 */ 2461