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.heep.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 * 3. All advertising materials mentioning features or use of this software 33 * must display the following acknowledgement: 34 * This product includes software developed by the University of 35 * California, Berkeley and its contributors. 36 * 4. Neither the name of the University nor the names of its contributors 37 * may be used to endorse or promote products derived from this software 38 * without specific prior written permission. 39 * 40 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * from: @(#)fd.c 7.4 (Berkeley) 5/25/91 53 * $FreeBSD$ 54 */ 55 56 #include "opt_fdc.h" 57 #include "card.h" 58 59 #include <sys/param.h> 60 #include <sys/systm.h> 61 #include <sys/bio.h> 62 #include <sys/bus.h> 63 #include <sys/conf.h> 64 #include <sys/devicestat.h> 65 #include <sys/disklabel.h> 66 #include <sys/fcntl.h> 67 #include <sys/fdcio.h> 68 #include <sys/kernel.h> 69 #include <sys/lock.h> 70 #include <sys/malloc.h> 71 #include <sys/module.h> 72 #include <sys/mutex.h> 73 #include <sys/proc.h> 74 #include <sys/syslog.h> 75 76 #include <machine/bus.h> 77 #include <sys/rman.h> 78 79 #include <machine/clock.h> 80 #include <machine/resource.h> 81 #include <machine/stdarg.h> 82 83 #include <isa/isavar.h> 84 #include <isa/isareg.h> 85 #include <isa/fdreg.h> 86 #include <isa/fdc.h> 87 #include <isa/rtc.h> 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 #define NO_TYPE 0 /* must match NO_TYPE in ft.c */ 105 #define FD_1720 1 106 #define FD_1480 2 107 #define FD_1440 3 108 #define FD_1200 4 109 #define FD_820 5 110 #define FD_800 6 111 #define FD_720 7 112 #define FD_360 8 113 #define FD_640 9 114 #define FD_1232 10 115 116 #define FD_1480in5_25 11 117 #define FD_1440in5_25 12 118 #define FD_820in5_25 13 119 #define FD_800in5_25 14 120 #define FD_720in5_25 15 121 #define FD_360in5_25 16 122 #define FD_640in5_25 17 123 124 #define BIO_RDSECTID BIO_FLAG1 125 126 static 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 #define MAX_SEC_SIZE (128 << 3) 151 #define MAX_CYLINDER 85 /* some people really stress their drives 152 * up to cyl 82 */ 153 #define MAX_HEAD 1 154 155 /***********************************************************************\ 156 * Per controller structure. * 157 \***********************************************************************/ 158 static devclass_t fdc_devclass; 159 160 /***********************************************************************\ 161 * Per drive structure. * 162 * N per controller (DRVS_PER_CTLR) * 163 \***********************************************************************/ 164 struct fd_data { 165 struct fdc_data *fdc; /* pointer to controller structure */ 166 int fdsu; /* this units number on this controller */ 167 int type; /* Drive type (FD_1440...) */ 168 struct fd_type *ft; /* pointer to the type descriptor */ 169 int flags; 170 #define FD_OPEN 0x01 /* it's open */ 171 #define FD_ACTIVE 0x02 /* it's active */ 172 #define FD_MOTOR 0x04 /* motor should be on */ 173 #define FD_MOTOR_WAIT 0x08 /* motor coming up */ 174 int skip; 175 int hddrv; 176 #define FD_NO_TRACK -2 177 int track; /* where we think the head is */ 178 int options; /* user configurable options, see ioctl_fd.h */ 179 struct callout_handle toffhandle; 180 struct callout_handle tohandle; 181 struct devstat device_stats; 182 device_t dev; 183 fdu_t fdu; 184 }; 185 186 struct fdc_ivars { 187 int fdunit; 188 }; 189 static devclass_t fd_devclass; 190 191 /***********************************************************************\ 192 * Throughout this file the following conventions will be used: * 193 * fd is a pointer to the fd_data struct for the drive in question * 194 * fdc is a pointer to the fdc_data struct for the controller * 195 * fdu is the floppy drive unit number * 196 * fdcu is the floppy controller unit number * 197 * fdsu is the floppy drive unit number on that controller. (sub-unit) * 198 \***********************************************************************/ 199 200 /* internal functions */ 201 static driver_intr_t fdc_intr; 202 static void set_motor(struct fdc_data *, int, int); 203 # define TURNON 1 204 # define TURNOFF 0 205 static timeout_t fd_turnoff; 206 static timeout_t fd_motor_on; 207 static void fd_turnon(struct fd_data *); 208 static void fdc_reset(fdc_p); 209 static int fd_in(struct fdc_data *, int *); 210 static int out_fdc(struct fdc_data *, int); 211 static void fdstart(struct fdc_data *); 212 static timeout_t fd_iotimeout; 213 static timeout_t fd_pseudointr; 214 static int fdstate(struct fdc_data *); 215 static int retrier(struct fdc_data *); 216 static int fdformat(dev_t, struct fd_formb *, struct proc *); 217 static int fdreadid(dev_t, struct fdc_readid *); 218 219 static int enable_fifo(fdc_p fdc); 220 static void fd_clone (void *arg, char *name, int namelen, dev_t *dev); 221 222 static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */ 223 224 #ifdef FDC_DEBUG 225 static char const * const fdstates[] = 226 { 227 "DEVIDLE", 228 "FINDWORK", 229 "DOSEEK", 230 "SEEKCOMPLETE", 231 "IOCOMPLETE", 232 "RECALCOMPLETE", 233 "STARTRECAL", 234 "RESETCTLR", 235 "SEEKWAIT", 236 "RECALWAIT", 237 "MOTORWAIT", 238 "IOTIMEDOUT", 239 "RESETCOMPLETE", 240 "PIOREAD", 241 }; 242 243 /* CAUTION: fd_debug causes huge amounts of logging output */ 244 static int volatile fd_debug = 0; 245 #define TRACE0(arg) if(fd_debug) printf(arg) 246 #define TRACE1(arg1, arg2) if(fd_debug) printf(arg1, arg2) 247 #else /* FDC_DEBUG */ 248 #define TRACE0(arg) 249 #define TRACE1(arg1, arg2) 250 #endif /* FDC_DEBUG */ 251 252 static void 253 fdout_wr(fdc_p fdc, u_int8_t v) 254 { 255 bus_space_write_1(fdc->portt, fdc->porth, FDOUT+fdc->port_off, v); 256 } 257 258 static u_int8_t 259 fdsts_rd(fdc_p fdc) 260 { 261 return bus_space_read_1(fdc->portt, fdc->porth, FDSTS+fdc->port_off); 262 } 263 264 static void 265 fddata_wr(fdc_p fdc, u_int8_t v) 266 { 267 bus_space_write_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off, v); 268 } 269 270 static u_int8_t 271 fddata_rd(fdc_p fdc) 272 { 273 return bus_space_read_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off); 274 } 275 276 static void 277 fdctl_wr_isa(fdc_p fdc, u_int8_t v) 278 { 279 bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v); 280 } 281 282 #if NCARD > 0 283 static void 284 fdctl_wr_pcmcia(fdc_p fdc, u_int8_t v) 285 { 286 bus_space_write_1(fdc->portt, fdc->porth, FDCTL+fdc->port_off, v); 287 } 288 #endif 289 290 #if 0 291 292 static u_int8_t 293 fdin_rd(fdc_p fdc) 294 { 295 return bus_space_read_1(fdc->portt, fdc->porth, FDIN); 296 } 297 298 #endif 299 300 /* 301 * The open function is named Fdopen() to avoid confusion with fdopen() 302 * in fd(4). The difference is now only meaningful for debuggers. 303 */ 304 static d_open_t Fdopen; 305 static d_close_t fdclose; 306 static d_ioctl_t fdioctl; 307 static d_strategy_t fdstrategy; 308 309 #define CDEV_MAJOR 9 310 static struct cdevsw fd_cdevsw = { 311 /* open */ Fdopen, 312 /* close */ fdclose, 313 /* read */ physread, 314 /* write */ physwrite, 315 /* ioctl */ fdioctl, 316 /* poll */ nopoll, 317 /* mmap */ nommap, 318 /* strategy */ fdstrategy, 319 /* name */ "fd", 320 /* maj */ CDEV_MAJOR, 321 /* dump */ nodump, 322 /* psize */ nopsize, 323 /* flags */ D_DISK, 324 }; 325 326 static int 327 fdc_err(struct fdc_data *fdc, const char *s) 328 { 329 fdc->fdc_errs++; 330 if (s) { 331 if (fdc->fdc_errs < FDC_ERRMAX) 332 device_printf(fdc->fdc_dev, "%s", s); 333 else if (fdc->fdc_errs == FDC_ERRMAX) 334 device_printf(fdc->fdc_dev, "too many errors, not " 335 "logging any more\n"); 336 } 337 338 return FD_FAILED; 339 } 340 341 /* 342 * fd_cmd: Send a command to the chip. Takes a varargs with this structure: 343 * Unit number, 344 * # of output bytes, output bytes as ints ..., 345 * # of input bytes, input bytes as ints ... 346 */ 347 static int 348 fd_cmd(struct fdc_data *fdc, int n_out, ...) 349 { 350 u_char cmd; 351 int n_in; 352 int n; 353 va_list ap; 354 355 va_start(ap, n_out); 356 cmd = (u_char)(va_arg(ap, int)); 357 va_end(ap); 358 va_start(ap, n_out); 359 for (n = 0; n < n_out; n++) 360 { 361 if (out_fdc(fdc, va_arg(ap, int)) < 0) 362 { 363 char msg[50]; 364 snprintf(msg, sizeof(msg), 365 "cmd %x failed at out byte %d of %d\n", 366 cmd, n + 1, n_out); 367 return fdc_err(fdc, msg); 368 } 369 } 370 n_in = va_arg(ap, int); 371 for (n = 0; n < n_in; n++) 372 { 373 int *ptr = va_arg(ap, int *); 374 if (fd_in(fdc, ptr) < 0) 375 { 376 char msg[50]; 377 snprintf(msg, sizeof(msg), 378 "cmd %02x failed at in byte %d of %d\n", 379 cmd, n + 1, n_in); 380 return fdc_err(fdc, msg); 381 } 382 } 383 384 return 0; 385 } 386 387 static int 388 enable_fifo(fdc_p fdc) 389 { 390 int i, j; 391 392 if ((fdc->flags & FDC_HAS_FIFO) == 0) { 393 394 /* 395 * Cannot use fd_cmd the normal way here, since 396 * this might be an invalid command. Thus we send the 397 * first byte, and check for an early turn of data directon. 398 */ 399 400 if (out_fdc(fdc, I8207X_CONFIGURE) < 0) 401 return fdc_err(fdc, "Enable FIFO failed\n"); 402 403 /* If command is invalid, return */ 404 j = 100000; 405 while ((i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM)) 406 != NE7_RQM && j-- > 0) 407 if (i == (NE7_DIO | NE7_RQM)) { 408 fdc_reset(fdc); 409 return FD_FAILED; 410 } 411 if (j<0 || 412 fd_cmd(fdc, 3, 413 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) { 414 fdc_reset(fdc); 415 return fdc_err(fdc, "Enable FIFO failed\n"); 416 } 417 fdc->flags |= FDC_HAS_FIFO; 418 return 0; 419 } 420 if (fd_cmd(fdc, 4, 421 I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) 422 return fdc_err(fdc, "Re-enable FIFO failed\n"); 423 return 0; 424 } 425 426 static int 427 fd_sense_drive_status(fdc_p fdc, int *st3p) 428 { 429 int st3; 430 431 if (fd_cmd(fdc, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3)) 432 { 433 return fdc_err(fdc, "Sense Drive Status failed\n"); 434 } 435 if (st3p) 436 *st3p = st3; 437 438 return 0; 439 } 440 441 static int 442 fd_sense_int(fdc_p fdc, int *st0p, int *cylp) 443 { 444 int cyl, st0, ret; 445 446 ret = fd_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); 447 if (ret) { 448 (void)fdc_err(fdc, 449 "sense intr err reading stat reg 0\n"); 450 return ret; 451 } 452 453 if (st0p) 454 *st0p = st0; 455 456 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { 457 /* 458 * There doesn't seem to have been an interrupt. 459 */ 460 return FD_NOT_VALID; 461 } 462 463 if (fd_in(fdc, &cyl) < 0) { 464 return fdc_err(fdc, "can't get cyl num\n"); 465 } 466 467 if (cylp) 468 *cylp = cyl; 469 470 return 0; 471 } 472 473 474 static int 475 fd_read_status(fdc_p fdc) 476 { 477 int i, ret; 478 479 for (i = 0; i < 7; i++) { 480 /* 481 * XXX types are poorly chosen. Only bytes can be read 482 * from the hardware, but fdc->status[] wants u_ints and 483 * fd_in() gives ints. 484 */ 485 int status; 486 487 ret = fd_in(fdc, &status); 488 fdc->status[i] = status; 489 if (ret != 0) 490 break; 491 } 492 493 if (ret == 0) 494 fdc->flags |= FDC_STAT_VALID; 495 else 496 fdc->flags &= ~FDC_STAT_VALID; 497 498 return ret; 499 } 500 501 /****************************************************************************/ 502 /* autoconfiguration stuff */ 503 /****************************************************************************/ 504 505 static int 506 fdc_alloc_resources(struct fdc_data *fdc) 507 { 508 device_t dev; 509 int ispnp, ispcmcia; 510 511 dev = fdc->fdc_dev; 512 ispnp = (fdc->flags & FDC_ISPNP) != 0; 513 ispcmcia = (fdc->flags & FDC_ISPCMCIA) != 0; 514 fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0; 515 fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0; 516 517 /* 518 * On standard ISA, we don't just use an 8 port range 519 * (e.g. 0x3f0-0x3f7) since that covers an IDE control 520 * register at 0x3f6. 521 * 522 * Isn't PC hardware wonderful. 523 * 524 * The Y-E Data PCMCIA FDC doesn't have this problem, it 525 * uses the register with offset 6 for pseudo-DMA, and the 526 * one with offset 7 as control register. 527 */ 528 fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT, 529 &fdc->rid_ioport, 0ul, ~0ul, 530 ispcmcia ? 8 : (ispnp ? 1 : 6), 531 RF_ACTIVE); 532 if (fdc->res_ioport == 0) { 533 device_printf(dev, "cannot reserve I/O port range\n"); 534 return ENXIO; 535 } 536 fdc->portt = rman_get_bustag(fdc->res_ioport); 537 fdc->porth = rman_get_bushandle(fdc->res_ioport); 538 539 if (!ispcmcia) { 540 /* 541 * Some BIOSen report the device at 0x3f2-0x3f5,0x3f7 542 * and some at 0x3f0-0x3f5,0x3f7. We detect the former 543 * by checking the size and adjust the port address 544 * accordingly. 545 */ 546 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 0) == 4) 547 fdc->port_off = -2; 548 549 /* 550 * Register the control port range as rid 1 if it 551 * isn't there already. Most PnP BIOSen will have 552 * already done this but non-PnP configurations don't. 553 * 554 * And some (!!) report 0x3f2-0x3f5 and completely 555 * leave out the control register! It seems that some 556 * non-antique controller chips have a different 557 * method of programming the transfer speed which 558 * doesn't require the control register, but it's 559 * mighty bogus as the chip still responds to the 560 * address for the control register. 561 */ 562 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 1) == 0) { 563 u_long ctlstart; 564 565 /* Find the control port, usually 0x3f7 */ 566 ctlstart = rman_get_start(fdc->res_ioport) + 567 fdc->port_off + 7; 568 569 bus_set_resource(dev, SYS_RES_IOPORT, 1, ctlstart, 1); 570 } 571 572 /* 573 * Now (finally!) allocate the control port. 574 */ 575 fdc->rid_ctl = 1; 576 fdc->res_ctl = bus_alloc_resource(dev, SYS_RES_IOPORT, 577 &fdc->rid_ctl, 578 0ul, ~0ul, 1, RF_ACTIVE); 579 if (fdc->res_ctl == 0) { 580 device_printf(dev, 581 "cannot reserve control I/O port range\n"); 582 return ENXIO; 583 } 584 fdc->ctlt = rman_get_bustag(fdc->res_ctl); 585 fdc->ctlh = rman_get_bushandle(fdc->res_ctl); 586 } 587 588 fdc->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ, 589 &fdc->rid_irq, 0ul, ~0ul, 1, 590 RF_ACTIVE); 591 if (fdc->res_irq == 0) { 592 device_printf(dev, "cannot reserve interrupt line\n"); 593 return ENXIO; 594 } 595 596 if ((fdc->flags & FDC_NODMA) == 0) { 597 fdc->res_drq = bus_alloc_resource(dev, SYS_RES_DRQ, 598 &fdc->rid_drq, 0ul, ~0ul, 1, 599 RF_ACTIVE); 600 if (fdc->res_drq == 0) { 601 device_printf(dev, "cannot reserve DMA request line\n"); 602 return ENXIO; 603 } 604 fdc->dmachan = fdc->res_drq->r_start; 605 } 606 607 return 0; 608 } 609 610 static void 611 fdc_release_resources(struct fdc_data *fdc) 612 { 613 device_t dev; 614 615 dev = fdc->fdc_dev; 616 if (fdc->res_irq != 0) { 617 bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 618 fdc->res_irq); 619 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 620 fdc->res_irq); 621 } 622 if (fdc->res_ctl != 0) { 623 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 624 fdc->res_ctl); 625 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 626 fdc->res_ctl); 627 } 628 if (fdc->res_ioport != 0) { 629 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 630 fdc->res_ioport); 631 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 632 fdc->res_ioport); 633 } 634 if (fdc->res_drq != 0) { 635 bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 636 fdc->res_drq); 637 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 638 fdc->res_drq); 639 } 640 } 641 642 /****************************************************************************/ 643 /* autoconfiguration stuff */ 644 /****************************************************************************/ 645 646 static struct isa_pnp_id fdc_ids[] = { 647 {0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */ 648 {0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */ 649 {0} 650 }; 651 652 static int 653 fdc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 654 { 655 struct fdc_ivars *ivars = device_get_ivars(child); 656 657 switch (which) { 658 case FDC_IVAR_FDUNIT: 659 *result = ivars->fdunit; 660 break; 661 default: 662 return ENOENT; 663 } 664 return 0; 665 } 666 667 /* 668 * fdc controller section. 669 */ 670 static int 671 fdc_probe(device_t dev) 672 { 673 int error, ic_type; 674 struct fdc_data *fdc; 675 676 fdc = device_get_softc(dev); 677 bzero(fdc, sizeof *fdc); 678 fdc->fdc_dev = dev; 679 fdc->fdctl_wr = fdctl_wr_isa; 680 681 /* Check pnp ids */ 682 error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids); 683 if (error == ENXIO) 684 return ENXIO; 685 if (error == 0) 686 fdc->flags |= FDC_ISPNP; 687 688 /* Attempt to allocate our resources for the duration of the probe */ 689 error = fdc_alloc_resources(fdc); 690 if (error) 691 goto out; 692 693 /* First - lets reset the floppy controller */ 694 fdout_wr(fdc, 0); 695 DELAY(100); 696 fdout_wr(fdc, FDO_FRST); 697 698 /* see if it can handle a command */ 699 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 700 NE7_SPEC_2(2, 0), 0)) { 701 error = ENXIO; 702 goto out; 703 } 704 705 if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) { 706 ic_type = (u_char)ic_type; 707 switch (ic_type) { 708 case 0x80: 709 device_set_desc(dev, "NEC 765 or clone"); 710 fdc->fdct = FDC_NE765; 711 break; 712 case 0x81: 713 device_set_desc(dev, "Intel 82077 or clone"); 714 fdc->fdct = FDC_I82077; 715 break; 716 case 0x90: 717 device_set_desc(dev, "NEC 72065B or clone"); 718 fdc->fdct = FDC_NE72065; 719 break; 720 default: 721 device_set_desc(dev, "generic floppy controller"); 722 fdc->fdct = FDC_UNKNOWN; 723 break; 724 } 725 } 726 727 out: 728 fdc_release_resources(fdc); 729 return (error); 730 } 731 732 #if NCARD > 0 733 734 static int 735 fdc_pccard_probe(device_t dev) 736 { 737 int error; 738 struct fdc_data *fdc; 739 740 fdc = device_get_softc(dev); 741 bzero(fdc, sizeof *fdc); 742 fdc->fdc_dev = dev; 743 fdc->fdctl_wr = fdctl_wr_pcmcia; 744 745 fdc->flags |= FDC_ISPCMCIA | FDC_NODMA; 746 747 /* Attempt to allocate our resources for the duration of the probe */ 748 error = fdc_alloc_resources(fdc); 749 if (error) 750 goto out; 751 752 /* First - lets reset the floppy controller */ 753 fdout_wr(fdc, 0); 754 DELAY(100); 755 fdout_wr(fdc, FDO_FRST); 756 757 /* see if it can handle a command */ 758 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 759 NE7_SPEC_2(2, 0), 0)) { 760 error = ENXIO; 761 goto out; 762 } 763 764 device_set_desc(dev, "Y-E Data PCMCIA floppy"); 765 fdc->fdct = FDC_NE765; 766 767 out: 768 fdc_release_resources(fdc); 769 return (error); 770 } 771 772 static int 773 fdc_pccard_detach(device_t dev) 774 { 775 struct fdc_data *fdc; 776 int error; 777 778 fdc = device_get_softc(dev); 779 780 /* have our children detached first */ 781 if ((error = bus_generic_detach(dev))) 782 return (error); 783 784 if ((fdc->flags & FDC_ATTACHED) == 0) { 785 device_printf(dev, "already unloaded\n"); 786 return (0); 787 } 788 fdc->flags &= ~FDC_ATTACHED; 789 790 BUS_TEARDOWN_INTR(device_get_parent(dev), dev, fdc->res_irq, 791 fdc->fdc_intr); 792 fdc_release_resources(fdc); 793 device_printf(dev, "unload\n"); 794 return (0); 795 } 796 797 #endif /* NCARD > 0 */ 798 799 /* 800 * Add a child device to the fdc controller. It will then be probed etc. 801 */ 802 static void 803 fdc_add_child(device_t dev, const char *name, int unit) 804 { 805 int disabled; 806 struct fdc_ivars *ivar; 807 device_t child; 808 809 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT | M_ZERO); 810 if (ivar == NULL) 811 return; 812 if (resource_int_value(name, unit, "drive", &ivar->fdunit) != 0) 813 ivar->fdunit = 0; 814 child = device_add_child(dev, name, unit); 815 if (child == NULL) 816 return; 817 device_set_ivars(child, ivar); 818 if (resource_int_value(name, unit, "disabled", &disabled) == 0 819 && disabled != 0) 820 device_disable(child); 821 } 822 823 static int 824 fdc_attach(device_t dev) 825 { 826 struct fdc_data *fdc; 827 int i, error, dunit; 828 const char *name, *dname; 829 830 fdc = device_get_softc(dev); 831 error = fdc_alloc_resources(fdc); 832 if (error) { 833 device_printf(dev, "cannot re-acquire resources\n"); 834 return error; 835 } 836 error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq, 837 INTR_TYPE_BIO | INTR_ENTROPY, fdc_intr, fdc, 838 &fdc->fdc_intr); 839 if (error) { 840 device_printf(dev, "cannot setup interrupt\n"); 841 return error; 842 } 843 fdc->fdcu = device_get_unit(dev); 844 fdc->flags |= FDC_ATTACHED; 845 846 if ((fdc->flags & FDC_NODMA) == 0) { 847 /* 848 * Acquire the DMA channel forever, the driver will do 849 * the rest 850 * XXX should integrate with rman 851 */ 852 isa_dma_acquire(fdc->dmachan); 853 isa_dmainit(fdc->dmachan, MAX_SEC_SIZE); 854 } 855 fdc->state = DEVIDLE; 856 857 /* reset controller, turn motor off, clear fdout mirror reg */ 858 fdout_wr(fdc, fdc->fdout = 0); 859 bioq_init(&fdc->head); 860 861 /* 862 * Probe and attach any children. We should probably detect 863 * devices from the BIOS unless overridden. 864 */ 865 name = device_get_nameunit(dev); 866 i = 0; 867 while ((resource_find_match(&i, &dname, &dunit, "at", name)) == 0) 868 fdc_add_child(dev, dname, dunit); 869 870 return (bus_generic_attach(dev)); 871 } 872 873 static int 874 fdc_print_child(device_t me, device_t child) 875 { 876 int retval = 0; 877 878 retval += bus_print_child_header(me, child); 879 retval += printf(" on %s drive %d\n", device_get_nameunit(me), 880 fdc_get_fdunit(child)); 881 882 return (retval); 883 } 884 885 static device_method_t fdc_methods[] = { 886 /* Device interface */ 887 DEVMETHOD(device_probe, fdc_probe), 888 DEVMETHOD(device_attach, fdc_attach), 889 DEVMETHOD(device_detach, bus_generic_detach), 890 DEVMETHOD(device_shutdown, bus_generic_shutdown), 891 DEVMETHOD(device_suspend, bus_generic_suspend), 892 DEVMETHOD(device_resume, bus_generic_resume), 893 894 /* Bus interface */ 895 DEVMETHOD(bus_print_child, fdc_print_child), 896 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 897 /* Our children never use any other bus interface methods. */ 898 899 { 0, 0 } 900 }; 901 902 static driver_t fdc_driver = { 903 "fdc", 904 fdc_methods, 905 sizeof(struct fdc_data) 906 }; 907 908 DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0); 909 910 #if NCARD > 0 911 912 static device_method_t fdc_pccard_methods[] = { 913 /* Device interface */ 914 DEVMETHOD(device_probe, fdc_pccard_probe), 915 DEVMETHOD(device_attach, fdc_attach), 916 DEVMETHOD(device_detach, fdc_pccard_detach), 917 DEVMETHOD(device_shutdown, bus_generic_shutdown), 918 DEVMETHOD(device_suspend, bus_generic_suspend), 919 DEVMETHOD(device_resume, bus_generic_resume), 920 921 /* Bus interface */ 922 DEVMETHOD(bus_print_child, fdc_print_child), 923 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 924 /* Our children never use any other bus interface methods. */ 925 926 { 0, 0 } 927 }; 928 929 static driver_t fdc_pccard_driver = { 930 "fdc", 931 fdc_pccard_methods, 932 sizeof(struct fdc_data) 933 }; 934 935 DRIVER_MODULE(fdc, pccard, fdc_pccard_driver, fdc_devclass, 0, 0); 936 937 #endif /* NCARD > 0 */ 938 939 static struct { 940 char *match; 941 int minor; 942 int link; 943 } fd_suffix[] = { 944 { "a", 0, 1 }, 945 { "b", 0, 1 }, 946 { "c", 0, 1 }, 947 { "d", 0, 1 }, 948 { "e", 0, 1 }, 949 { "f", 0, 1 }, 950 { "g", 0, 1 }, 951 { "h", 0, 1 }, 952 { ".1720", 1, 0 }, 953 { ".1480", 2, 0 }, 954 { ".1440", 3, 0 }, 955 { ".1200", 4, 0 }, 956 { ".820", 5, 0 }, 957 { ".800", 6, 0 }, 958 { ".720", 7, 0 }, 959 { ".360", 8, 0 }, 960 { ".640", 9, 0 }, 961 { ".1232", 10, 0 }, 962 { 0, 0 } 963 }; 964 static void 965 fd_clone (void *arg, char *name, int namelen, dev_t *dev) 966 { 967 int u, d, i; 968 char *n; 969 dev_t pdev; 970 971 if (*dev != NODEV) 972 return; 973 if (dev_stdclone(name, &n, "fd", &u) != 2) 974 return; 975 for (i = 0; ; i++) { 976 if (fd_suffix[i].match == NULL) 977 return; 978 if (strcmp(n, fd_suffix[i].match)) 979 continue; 980 d = fd_suffix[i].minor; 981 break; 982 } 983 if (fd_suffix[i].link == 0) { 984 *dev = make_dev(&fd_cdevsw, (u << 6) + d, 985 UID_ROOT, GID_OPERATOR, 0640, name); 986 } else { 987 pdev = makedev(fd_cdevsw.d_maj, (u << 6) + d); 988 *dev = make_dev_alias(pdev, name); 989 } 990 } 991 992 /******************************************************************/ 993 /* 994 * devices attached to the controller section. 995 */ 996 static int 997 fd_probe(device_t dev) 998 { 999 int i; 1000 u_int fdt, st0, st3; 1001 struct fd_data *fd; 1002 struct fdc_data *fdc; 1003 fdsu_t fdsu; 1004 static int fd_fifo = 0; 1005 1006 fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */ 1007 fd = device_get_softc(dev); 1008 fdc = device_get_softc(device_get_parent(dev)); 1009 1010 bzero(fd, sizeof *fd); 1011 fd->dev = dev; 1012 fd->fdc = fdc; 1013 fd->fdsu = fdsu; 1014 fd->fdu = device_get_unit(dev); 1015 1016 #ifdef __i386__ 1017 /* look up what bios thinks we have */ 1018 switch (fd->fdu) { 1019 case 0: 1020 if ((fdc->flags & FDC_ISPCMCIA)) 1021 fdt = RTCFDT_144M; 1022 else if (device_get_flags(fdc->fdc_dev) & FDC_PRETEND_D0) 1023 fdt = RTCFDT_144M | RTCFDT_144M_PRETENDED; 1024 else 1025 fdt = (rtcin(RTC_FDISKETTE) & 0xf0); 1026 break; 1027 case 1: 1028 fdt = ((rtcin(RTC_FDISKETTE) << 4) & 0xf0); 1029 break; 1030 default: 1031 fdt = RTCFDT_NONE; 1032 break; 1033 } 1034 #else 1035 fdt = RTCFDT_144M; /* XXX probably */ 1036 #endif 1037 1038 /* is there a unit? */ 1039 if (fdt == RTCFDT_NONE) 1040 return (ENXIO); 1041 1042 /* select it */ 1043 set_motor(fdc, fdsu, TURNON); 1044 DELAY(1000000); /* 1 sec */ 1045 1046 /* XXX This doesn't work before the first set_motor() */ 1047 if (fd_fifo == 0 && fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN 1048 && (device_get_flags(fdc->fdc_dev) & FDC_NO_FIFO) == 0 1049 && enable_fifo(fdc) == 0) { 1050 device_printf(device_get_parent(dev), 1051 "FIFO enabled, %d bytes threshold\n", fifo_threshold); 1052 } 1053 fd_fifo = 1; 1054 1055 if ((fd_cmd(fdc, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) 1056 && (st3 & NE7_ST3_T0)) { 1057 /* if at track 0, first seek inwards */ 1058 /* seek some steps: */ 1059 fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0); 1060 DELAY(300000); /* ...wait a moment... */ 1061 fd_sense_int(fdc, 0, 0); /* make ctrlr happy */ 1062 } 1063 1064 /* If we're at track 0 first seek inwards. */ 1065 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) { 1066 /* Seek some steps... */ 1067 if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 1068 /* ...wait a moment... */ 1069 DELAY(300000); 1070 /* make ctrlr happy: */ 1071 fd_sense_int(fdc, 0, 0); 1072 } 1073 } 1074 1075 for (i = 0; i < 2; i++) { 1076 /* 1077 * we must recalibrate twice, just in case the 1078 * heads have been beyond cylinder 76, since most 1079 * FDCs still barf when attempting to recalibrate 1080 * more than 77 steps 1081 */ 1082 /* go back to 0: */ 1083 if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1084 /* a second being enough for full stroke seek*/ 1085 DELAY(i == 0 ? 1000000 : 300000); 1086 1087 /* anything responding? */ 1088 if (fd_sense_int(fdc, &st0, 0) == 0 && 1089 (st0 & NE7_ST0_EC) == 0) 1090 break; /* already probed succesfully */ 1091 } 1092 } 1093 1094 set_motor(fdc, fdsu, TURNOFF); 1095 1096 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */ 1097 return (ENXIO); 1098 1099 fd->track = FD_NO_TRACK; 1100 fd->fdc = fdc; 1101 fd->fdsu = fdsu; 1102 fd->options = 0; 1103 callout_handle_init(&fd->toffhandle); 1104 callout_handle_init(&fd->tohandle); 1105 1106 switch (fdt) { 1107 case RTCFDT_12M: 1108 device_set_desc(dev, "1200-KB 5.25\" drive"); 1109 fd->type = FD_1200; 1110 break; 1111 case RTCFDT_144M | RTCFDT_144M_PRETENDED: 1112 device_set_desc(dev, "config-pretended 1440-MB 3.5\" drive"); 1113 fdt = RTCFDT_144M; 1114 fd->type = FD_1440; 1115 case RTCFDT_144M: 1116 device_set_desc(dev, "1440-KB 3.5\" drive"); 1117 fd->type = FD_1440; 1118 break; 1119 case RTCFDT_288M: 1120 case RTCFDT_288M_1: 1121 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 1122 fd->type = FD_1440; 1123 break; 1124 case RTCFDT_360K: 1125 device_set_desc(dev, "360-KB 5.25\" drive"); 1126 fd->type = FD_360; 1127 break; 1128 case RTCFDT_720K: 1129 printf("720-KB 3.5\" drive"); 1130 fd->type = FD_720; 1131 break; 1132 default: 1133 return (ENXIO); 1134 } 1135 return (0); 1136 } 1137 1138 static int 1139 fd_attach(device_t dev) 1140 { 1141 struct fd_data *fd; 1142 static int cdevsw_add_done; 1143 1144 if (!cdevsw_add_done) { 1145 cdevsw_add(&fd_cdevsw); /* XXX */ 1146 cdevsw_add_done = 1; 1147 } 1148 EVENTHANDLER_REGISTER(dev_clone, fd_clone, 0, 1000); 1149 fd = device_get_softc(dev); 1150 make_dev(&fd_cdevsw, fd->fdu << 6, 1151 UID_ROOT, GID_OPERATOR, 0640, "fd%d", fd->fdu); 1152 devstat_add_entry(&fd->device_stats, device_get_name(dev), 1153 device_get_unit(dev), 0, DEVSTAT_NO_ORDERED_TAGS, 1154 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER, 1155 DEVSTAT_PRIORITY_FD); 1156 return (0); 1157 } 1158 1159 static int 1160 fd_detach(device_t dev) 1161 { 1162 struct fd_data *fd; 1163 1164 fd = device_get_softc(dev); 1165 untimeout(fd_turnoff, fd, fd->toffhandle); 1166 1167 return (0); 1168 } 1169 1170 static device_method_t fd_methods[] = { 1171 /* Device interface */ 1172 DEVMETHOD(device_probe, fd_probe), 1173 DEVMETHOD(device_attach, fd_attach), 1174 DEVMETHOD(device_detach, fd_detach), 1175 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1176 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 1177 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 1178 1179 { 0, 0 } 1180 }; 1181 1182 static driver_t fd_driver = { 1183 "fd", 1184 fd_methods, 1185 sizeof(struct fd_data) 1186 }; 1187 1188 DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, 0, 0); 1189 1190 /****************************************************************************/ 1191 /* motor control stuff */ 1192 /* remember to not deselect the drive we're working on */ 1193 /****************************************************************************/ 1194 static void 1195 set_motor(struct fdc_data *fdc, int fdsu, int turnon) 1196 { 1197 int fdout = fdc->fdout; 1198 int needspecify = 0; 1199 1200 if(turnon) { 1201 fdout &= ~FDO_FDSEL; 1202 fdout |= (FDO_MOEN0 << fdsu) + fdsu; 1203 } else 1204 fdout &= ~(FDO_MOEN0 << fdsu); 1205 1206 if(!turnon 1207 && (fdout & (FDO_MOEN0+FDO_MOEN1+FDO_MOEN2+FDO_MOEN3)) == 0) 1208 /* gonna turn off the last drive, put FDC to bed */ 1209 fdout &= ~ (FDO_FRST|FDO_FDMAEN); 1210 else { 1211 /* make sure controller is selected and specified */ 1212 if((fdout & (FDO_FRST|FDO_FDMAEN)) == 0) 1213 needspecify = 1; 1214 fdout |= (FDO_FRST|FDO_FDMAEN); 1215 } 1216 1217 fdout_wr(fdc, fdout); 1218 fdc->fdout = fdout; 1219 TRACE1("[0x%x->FDOUT]", fdout); 1220 1221 if (needspecify) { 1222 /* 1223 * we silently assume the command will be accepted 1224 * after an FDC reset 1225 * 1226 * Steinbach's Guideline for Systems Programming: 1227 * Never test for an error condition you don't know 1228 * how to handle. 1229 */ 1230 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1231 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1232 0); 1233 if (fdc->flags & FDC_HAS_FIFO) 1234 (void) enable_fifo(fdc); 1235 } 1236 } 1237 1238 static void 1239 fd_turnoff(void *xfd) 1240 { 1241 int s; 1242 fd_p fd = xfd; 1243 1244 TRACE1("[fd%d: turnoff]", fd->fdu); 1245 1246 s = splbio(); 1247 /* 1248 * Don't turn off the motor yet if the drive is active. 1249 * 1250 * If we got here, this could only mean we missed an interrupt. 1251 * This can e. g. happen on the Y-E Date PCMCIA floppy controller 1252 * after a controller reset. Just schedule a pseudo-interrupt 1253 * so the state machine gets re-entered. 1254 */ 1255 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) { 1256 fdc_intr(fd->fdc); 1257 splx(s); 1258 return; 1259 } 1260 1261 fd->flags &= ~FD_MOTOR; 1262 set_motor(fd->fdc, fd->fdsu, TURNOFF); 1263 splx(s); 1264 } 1265 1266 static void 1267 fd_motor_on(void *xfd) 1268 { 1269 int s; 1270 fd_p fd = xfd; 1271 1272 s = splbio(); 1273 fd->flags &= ~FD_MOTOR_WAIT; 1274 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT)) 1275 { 1276 fdc_intr(fd->fdc); 1277 } 1278 splx(s); 1279 } 1280 1281 static void 1282 fd_turnon(fd_p fd) 1283 { 1284 if(!(fd->flags & FD_MOTOR)) 1285 { 1286 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT); 1287 set_motor(fd->fdc, fd->fdsu, TURNON); 1288 timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */ 1289 } 1290 } 1291 1292 static void 1293 fdc_reset(fdc_p fdc) 1294 { 1295 /* Try a reset, keep motor on */ 1296 fdout_wr(fdc, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1297 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1298 DELAY(100); 1299 /* enable FDC, but defer interrupts a moment */ 1300 fdout_wr(fdc, fdc->fdout & ~FDO_FDMAEN); 1301 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN); 1302 DELAY(100); 1303 fdout_wr(fdc, fdc->fdout); 1304 TRACE1("[0x%x->FDOUT]", fdc->fdout); 1305 1306 /* XXX after a reset, silently believe the FDC will accept commands */ 1307 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1308 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1309 0); 1310 if (fdc->flags & FDC_HAS_FIFO) 1311 (void) enable_fifo(fdc); 1312 } 1313 1314 /****************************************************************************/ 1315 /* fdc in/out */ 1316 /****************************************************************************/ 1317 static int 1318 fd_in(struct fdc_data *fdc, int *ptr) 1319 { 1320 int i, j = 100000; 1321 while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) 1322 != (NE7_DIO|NE7_RQM) && j-- > 0) 1323 if (i == NE7_RQM) 1324 return fdc_err(fdc, "ready for output in input\n"); 1325 if (j <= 0) 1326 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1327 #ifdef FDC_DEBUG 1328 i = fddata_rd(fdc); 1329 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1330 *ptr = i; 1331 return 0; 1332 #else /* !FDC_DEBUG */ 1333 i = fddata_rd(fdc); 1334 if (ptr) 1335 *ptr = i; 1336 return 0; 1337 #endif /* FDC_DEBUG */ 1338 } 1339 1340 int 1341 out_fdc(struct fdc_data *fdc, int x) 1342 { 1343 int i; 1344 1345 /* Check that the direction bit is set */ 1346 i = 100000; 1347 while ((fdsts_rd(fdc) & NE7_DIO) && i-- > 0); 1348 if (i <= 0) return fdc_err(fdc, "direction bit not set\n"); 1349 1350 /* Check that the floppy controller is ready for a command */ 1351 i = 100000; 1352 while ((fdsts_rd(fdc) & NE7_RQM) == 0 && i-- > 0); 1353 if (i <= 0) 1354 return fdc_err(fdc, bootverbose? "output ready timeout\n": 0); 1355 1356 /* Send the command and return */ 1357 fddata_wr(fdc, x); 1358 TRACE1("[0x%x->FDDATA]", x); 1359 return (0); 1360 } 1361 1362 /****************************************************************************/ 1363 /* fdopen/fdclose */ 1364 /****************************************************************************/ 1365 int 1366 Fdopen(dev_t dev, int flags, int mode, struct proc *p) 1367 { 1368 fdu_t fdu = FDUNIT(minor(dev)); 1369 int type = FDTYPE(minor(dev)); 1370 fd_p fd; 1371 fdc_p fdc; 1372 1373 /* check bounds */ 1374 if ((fd = devclass_get_softc(fd_devclass, fdu)) == 0) 1375 return (ENXIO); 1376 fdc = fd->fdc; 1377 if ((fdc == NULL) || (fd->type == NO_TYPE)) 1378 return (ENXIO); 1379 if (type > NUMDENS) 1380 return (ENXIO); 1381 if (type == 0) 1382 type = fd->type; 1383 else { 1384 /* 1385 * For each type of basic drive, make sure we are trying 1386 * to open a type it can do, 1387 */ 1388 if (type != fd->type) { 1389 switch (fd->type) { 1390 case FD_360: 1391 return (ENXIO); 1392 case FD_720: 1393 if ( type != FD_820 1394 && type != FD_800 1395 && type != FD_640 1396 ) 1397 return (ENXIO); 1398 break; 1399 case FD_1200: 1400 switch (type) { 1401 case FD_1480: 1402 type = FD_1480in5_25; 1403 break; 1404 case FD_1440: 1405 type = FD_1440in5_25; 1406 break; 1407 case FD_1232: 1408 break; 1409 case FD_820: 1410 type = FD_820in5_25; 1411 break; 1412 case FD_800: 1413 type = FD_800in5_25; 1414 break; 1415 case FD_720: 1416 type = FD_720in5_25; 1417 break; 1418 case FD_640: 1419 type = FD_640in5_25; 1420 break; 1421 case FD_360: 1422 type = FD_360in5_25; 1423 break; 1424 default: 1425 return(ENXIO); 1426 } 1427 break; 1428 case FD_1440: 1429 if ( type != FD_1720 1430 && type != FD_1480 1431 && type != FD_1200 1432 && type != FD_820 1433 && type != FD_800 1434 && type != FD_720 1435 && type != FD_640 1436 ) 1437 return(ENXIO); 1438 break; 1439 } 1440 } 1441 } 1442 fd->ft = fd_types + type - 1; 1443 fd->flags |= FD_OPEN; 1444 1445 return 0; 1446 } 1447 1448 int 1449 fdclose(dev_t dev, int flags, int mode, struct proc *p) 1450 { 1451 fdu_t fdu = FDUNIT(minor(dev)); 1452 struct fd_data *fd; 1453 1454 fd = devclass_get_softc(fd_devclass, fdu); 1455 fd->flags &= ~FD_OPEN; 1456 fd->options &= ~(FDOPT_NORETRY | FDOPT_NOERRLOG | FDOPT_NOERROR); 1457 1458 return (0); 1459 } 1460 1461 /****************************************************************************/ 1462 /* fdstrategy */ 1463 /****************************************************************************/ 1464 void 1465 fdstrategy(struct bio *bp) 1466 { 1467 unsigned nblocks, blknum, cando; 1468 int s; 1469 fdu_t fdu; 1470 fdc_p fdc; 1471 fd_p fd; 1472 size_t fdblk; 1473 1474 fdu = FDUNIT(minor(bp->bio_dev)); 1475 fd = devclass_get_softc(fd_devclass, fdu); 1476 if (fd == 0) 1477 panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)", 1478 (u_long)major(bp->bio_dev), (u_long)minor(bp->bio_dev)); 1479 fdc = fd->fdc; 1480 if (fd->type == NO_TYPE) { 1481 bp->bio_error = ENXIO; 1482 bp->bio_flags |= BIO_ERROR; 1483 goto bad; 1484 } 1485 fdblk = 128 << (fd->ft->secsize); 1486 if (bp->bio_cmd != BIO_FORMAT && (bp->bio_flags & BIO_RDSECTID) == 0) { 1487 if (bp->bio_blkno < 0) { 1488 printf( 1489 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n", 1490 fdu, (u_long)bp->bio_blkno, bp->bio_bcount); 1491 bp->bio_error = EINVAL; 1492 bp->bio_flags |= BIO_ERROR; 1493 goto bad; 1494 } 1495 if ((bp->bio_bcount % fdblk) != 0) { 1496 bp->bio_error = EINVAL; 1497 bp->bio_flags |= BIO_ERROR; 1498 goto bad; 1499 } 1500 } 1501 1502 /* 1503 * Set up block calculations. 1504 */ 1505 if (bp->bio_blkno > 20000000) { 1506 /* 1507 * Reject unreasonably high block number, prevent the 1508 * multiplication below from overflowing. 1509 */ 1510 bp->bio_error = EINVAL; 1511 bp->bio_flags |= BIO_ERROR; 1512 goto bad; 1513 } 1514 blknum = (unsigned) bp->bio_blkno * DEV_BSIZE/fdblk; 1515 nblocks = fd->ft->size; 1516 bp->bio_resid = 0; 1517 if (blknum + (bp->bio_bcount / fdblk) > nblocks) { 1518 if (blknum <= nblocks) { 1519 cando = (nblocks - blknum) * fdblk; 1520 bp->bio_resid = bp->bio_bcount - cando; 1521 if (cando == 0) 1522 goto bad; /* not actually bad but EOF */ 1523 } else { 1524 bp->bio_error = EINVAL; 1525 bp->bio_flags |= BIO_ERROR; 1526 goto bad; 1527 } 1528 } 1529 bp->bio_pblkno = bp->bio_blkno; 1530 s = splbio(); 1531 bioqdisksort(&fdc->head, bp); 1532 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */ 1533 devstat_start_transaction(&fd->device_stats); 1534 device_busy(fd->dev); 1535 fdstart(fdc); 1536 splx(s); 1537 return; 1538 1539 bad: 1540 biodone(bp); 1541 } 1542 1543 /***************************************************************\ 1544 * fdstart * 1545 * We have just queued something.. if the controller is not busy * 1546 * then simulate the case where it has just finished a command * 1547 * So that it (the interrupt routine) looks on the queue for more* 1548 * work to do and picks up what we just added. * 1549 * If the controller is already busy, we need do nothing, as it * 1550 * will pick up our work when the present work completes * 1551 \***************************************************************/ 1552 static void 1553 fdstart(struct fdc_data *fdc) 1554 { 1555 int s; 1556 1557 s = splbio(); 1558 if(fdc->state == DEVIDLE) 1559 { 1560 fdc_intr(fdc); 1561 } 1562 splx(s); 1563 } 1564 1565 static void 1566 fd_iotimeout(void *xfdc) 1567 { 1568 fdc_p fdc; 1569 int s; 1570 1571 fdc = xfdc; 1572 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); 1573 1574 /* 1575 * Due to IBM's brain-dead design, the FDC has a faked ready 1576 * signal, hardwired to ready == true. Thus, any command 1577 * issued if there's no diskette in the drive will _never_ 1578 * complete, and must be aborted by resetting the FDC. 1579 * Many thanks, Big Blue! 1580 * The FDC must not be reset directly, since that would 1581 * interfere with the state machine. Instead, pretend that 1582 * the command completed but was invalid. The state machine 1583 * will reset the FDC and retry once. 1584 */ 1585 s = splbio(); 1586 fdc->status[0] = NE7_ST0_IC_IV; 1587 fdc->flags &= ~FDC_STAT_VALID; 1588 fdc->state = IOTIMEDOUT; 1589 fdc_intr(fdc); 1590 splx(s); 1591 } 1592 1593 /* just ensure it has the right spl */ 1594 static void 1595 fd_pseudointr(void *xfdc) 1596 { 1597 int s; 1598 1599 s = splbio(); 1600 fdc_intr(xfdc); 1601 splx(s); 1602 } 1603 1604 /***********************************************************************\ 1605 * fdc_intr * 1606 * keep calling the state machine until it returns a 0 * 1607 * ALWAYS called at SPLBIO * 1608 \***********************************************************************/ 1609 static void 1610 fdc_intr(void *xfdc) 1611 { 1612 fdc_p fdc = xfdc; 1613 while(fdstate(fdc)) 1614 ; 1615 } 1616 1617 /* 1618 * magic pseudo-DMA initialization for YE FDC. Sets count and 1619 * direction 1620 */ 1621 #define SET_BCDR(fdc,wr,cnt,port) \ 1622 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port, \ 1623 ((cnt)-1) & 0xff); \ 1624 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port + 1, \ 1625 ((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))); 1626 1627 /* 1628 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy 1629 */ 1630 static int 1631 fdcpio(fdc_p fdc, long flags, caddr_t addr, u_int count) 1632 { 1633 u_char *cptr = (u_char *)addr; 1634 1635 if (flags == BIO_READ) { 1636 if (fdc->state != PIOREAD) { 1637 fdc->state = PIOREAD; 1638 return(0); 1639 } 1640 SET_BCDR(fdc, 0, count, 0); 1641 bus_space_read_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1642 FDC_YE_DATAPORT, cptr, count); 1643 } else { 1644 bus_space_write_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1645 FDC_YE_DATAPORT, cptr, count); 1646 SET_BCDR(fdc, 0, count, 0); 1647 } 1648 return(1); 1649 } 1650 1651 /***********************************************************************\ 1652 * The controller state machine. * 1653 * if it returns a non zero value, it should be called again immediatly * 1654 \***********************************************************************/ 1655 static int 1656 fdstate(fdc_p fdc) 1657 { 1658 int read, format, rdsectid, head, i, sec = 0, sectrac, st0, cyl, st3, idf; 1659 unsigned blknum = 0, b_cylinder = 0; 1660 struct fdc_readid *idp; 1661 fdu_t fdu = fdc->fdu; 1662 fd_p fd; 1663 register struct bio *bp; 1664 struct fd_formb *finfo = NULL; 1665 size_t fdblk; 1666 1667 bp = fdc->bp; 1668 if (bp == NULL) { 1669 bp = bioq_first(&fdc->head); 1670 if (bp != NULL) { 1671 bioq_remove(&fdc->head, bp); 1672 fdc->bp = bp; 1673 } 1674 } 1675 if (bp == NULL) { 1676 /***********************************************\ 1677 * nothing left for this controller to do * 1678 * Force into the IDLE state, * 1679 \***********************************************/ 1680 fdc->state = DEVIDLE; 1681 if (fdc->fd) { 1682 device_printf(fdc->fdc_dev, 1683 "unexpected valid fd pointer\n"); 1684 fdc->fd = (fd_p) 0; 1685 fdc->fdu = -1; 1686 } 1687 TRACE1("[fdc%d IDLE]", fdc->fdcu); 1688 return (0); 1689 } 1690 fdu = FDUNIT(minor(bp->bio_dev)); 1691 fd = devclass_get_softc(fd_devclass, fdu); 1692 fdblk = 128 << fd->ft->secsize; 1693 if (fdc->fd && (fd != fdc->fd)) 1694 device_printf(fd->dev, "confused fd pointers\n"); 1695 read = bp->bio_cmd == BIO_READ; 1696 if (read) 1697 idf = ISADMA_READ; 1698 else 1699 idf = ISADMA_WRITE; 1700 format = bp->bio_cmd == BIO_FORMAT; 1701 rdsectid = bp->bio_flags & BIO_RDSECTID; 1702 if (format) { 1703 finfo = (struct fd_formb *)bp->bio_data; 1704 fd->skip = (char *)&(finfo->fd_formb_cylno(0)) 1705 - (char *)finfo; 1706 } 1707 if (fdc->state == DOSEEK || fdc->state == SEEKCOMPLETE) { 1708 blknum = (unsigned) bp->bio_pblkno * DEV_BSIZE/fdblk + 1709 fd->skip/fdblk; 1710 b_cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 1711 } 1712 TRACE1("fd%d", fdu); 1713 TRACE1("[%s]", fdstates[fdc->state]); 1714 TRACE1("(0x%x)", fd->flags); 1715 untimeout(fd_turnoff, fd, fd->toffhandle); 1716 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 1717 switch (fdc->state) 1718 { 1719 case DEVIDLE: 1720 case FINDWORK: /* we have found new work */ 1721 fdc->retry = 0; 1722 fd->skip = 0; 1723 fdc->fd = fd; 1724 fdc->fdu = fdu; 1725 fdc->fdctl_wr(fdc, fd->ft->trans); 1726 TRACE1("[0x%x->FDCTL]", fd->ft->trans); 1727 /*******************************************************\ 1728 * If the next drive has a motor startup pending, then * 1729 * it will start up in its own good time * 1730 \*******************************************************/ 1731 if(fd->flags & FD_MOTOR_WAIT) { 1732 fdc->state = MOTORWAIT; 1733 return (0); /* come back later */ 1734 } 1735 /*******************************************************\ 1736 * Maybe if it's not starting, it SHOULD be starting * 1737 \*******************************************************/ 1738 if (!(fd->flags & FD_MOTOR)) 1739 { 1740 fdc->state = MOTORWAIT; 1741 fd_turnon(fd); 1742 return (0); 1743 } 1744 else /* at least make sure we are selected */ 1745 { 1746 set_motor(fdc, fd->fdsu, TURNON); 1747 } 1748 if (fdc->flags & FDC_NEEDS_RESET) { 1749 fdc->state = RESETCTLR; 1750 fdc->flags &= ~FDC_NEEDS_RESET; 1751 } else 1752 fdc->state = DOSEEK; 1753 break; 1754 case DOSEEK: 1755 if (b_cylinder == (unsigned)fd->track) 1756 { 1757 fdc->state = SEEKCOMPLETE; 1758 break; 1759 } 1760 if (fd_cmd(fdc, 3, NE7CMD_SEEK, 1761 fd->fdsu, b_cylinder * fd->ft->steptrac, 1762 0)) 1763 { 1764 /* 1765 * seek command not accepted, looks like 1766 * the FDC went off to the Saints... 1767 */ 1768 fdc->retry = 6; /* try a reset */ 1769 return(retrier(fdc)); 1770 } 1771 fd->track = FD_NO_TRACK; 1772 fdc->state = SEEKWAIT; 1773 return(0); /* will return later */ 1774 case SEEKWAIT: 1775 /* allow heads to settle */ 1776 timeout(fd_pseudointr, fdc, hz / 16); 1777 fdc->state = SEEKCOMPLETE; 1778 return(0); /* will return later */ 1779 case SEEKCOMPLETE : /* SEEK DONE, START DMA */ 1780 /* Make sure seek really happened*/ 1781 if(fd->track == FD_NO_TRACK) { 1782 int descyl = b_cylinder * fd->ft->steptrac; 1783 do { 1784 /* 1785 * This might be a "ready changed" interrupt, 1786 * which cannot really happen since the 1787 * RDY pin is hardwired to + 5 volts. This 1788 * generally indicates a "bouncing" intr 1789 * line, so do one of the following: 1790 * 1791 * When running on an enhanced FDC that is 1792 * known to not go stuck after responding 1793 * with INVALID, fetch all interrupt states 1794 * until seeing either an INVALID or a 1795 * real interrupt condition. 1796 * 1797 * When running on a dumb old NE765, give 1798 * up immediately. The controller will 1799 * provide up to four dummy RC interrupt 1800 * conditions right after reset (for the 1801 * corresponding four drives), so this is 1802 * our only chance to get notice that it 1803 * was not the FDC that caused the interrupt. 1804 */ 1805 if (fd_sense_int(fdc, &st0, &cyl) 1806 == FD_NOT_VALID) 1807 return 0; 1808 if(fdc->fdct == FDC_NE765 1809 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 1810 return 0; /* hope for a real intr */ 1811 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 1812 1813 if (0 == descyl) { 1814 int failed = 0; 1815 /* 1816 * seek to cyl 0 requested; make sure we are 1817 * really there 1818 */ 1819 if (fd_sense_drive_status(fdc, &st3)) 1820 failed = 1; 1821 if ((st3 & NE7_ST3_T0) == 0) { 1822 printf( 1823 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", 1824 fdu, st3, NE7_ST3BITS); 1825 failed = 1; 1826 } 1827 1828 if (failed) { 1829 if(fdc->retry < 3) 1830 fdc->retry = 3; 1831 return (retrier(fdc)); 1832 } 1833 } 1834 1835 if (cyl != descyl) { 1836 printf( 1837 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", 1838 fdu, descyl, cyl, st0); 1839 if (fdc->retry < 3) 1840 fdc->retry = 3; 1841 return (retrier(fdc)); 1842 } 1843 } 1844 1845 fd->track = b_cylinder; 1846 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 1847 isa_dmastart(idf, bp->bio_data+fd->skip, 1848 format ? bp->bio_bcount : fdblk, fdc->dmachan); 1849 sectrac = fd->ft->sectrac; 1850 sec = blknum % (sectrac * fd->ft->heads); 1851 head = sec / sectrac; 1852 sec = sec % sectrac + 1; 1853 fd->hddrv = ((head&1)<<2)+fdu; 1854 1855 if(format || !(read || rdsectid)) 1856 { 1857 /* make sure the drive is writable */ 1858 if(fd_sense_drive_status(fdc, &st3) != 0) 1859 { 1860 /* stuck controller? */ 1861 if (!(fdc->flags & FDC_NODMA)) 1862 isa_dmadone(idf, 1863 bp->bio_data + fd->skip, 1864 format ? bp->bio_bcount : fdblk, 1865 fdc->dmachan); 1866 fdc->retry = 6; /* reset the beast */ 1867 return (retrier(fdc)); 1868 } 1869 if(st3 & NE7_ST3_WP) 1870 { 1871 /* 1872 * XXX YES! this is ugly. 1873 * in order to force the current operation 1874 * to fail, we will have to fake an FDC 1875 * error - all error handling is done 1876 * by the retrier() 1877 */ 1878 fdc->status[0] = NE7_ST0_IC_AT; 1879 fdc->status[1] = NE7_ST1_NW; 1880 fdc->status[2] = 0; 1881 fdc->status[3] = fd->track; 1882 fdc->status[4] = head; 1883 fdc->status[5] = sec; 1884 fdc->retry = 8; /* break out immediately */ 1885 fdc->state = IOTIMEDOUT; /* not really... */ 1886 return (1); 1887 } 1888 } 1889 1890 if (format) { 1891 if (fdc->flags & FDC_NODMA) { 1892 /* 1893 * This seems to be necessary for 1894 * whatever obscure reason; if we omit 1895 * it, we end up filling the sector ID 1896 * fields of the newly formatted track 1897 * entirely with garbage, causing 1898 * `wrong cylinder' errors all over 1899 * the place when trying to read them 1900 * back. 1901 * 1902 * Umpf. 1903 */ 1904 SET_BCDR(fdc, 1, bp->bio_bcount, 0); 1905 1906 (void)fdcpio(fdc,bp->bio_cmd, 1907 bp->bio_data+fd->skip, 1908 bp->bio_bcount); 1909 1910 } 1911 /* formatting */ 1912 if(fd_cmd(fdc, 6, NE7CMD_FORMAT, head << 2 | fdu, 1913 finfo->fd_formb_secshift, 1914 finfo->fd_formb_nsecs, 1915 finfo->fd_formb_gaplen, 1916 finfo->fd_formb_fillbyte, 0)) { 1917 /* controller fell over */ 1918 if (!(fdc->flags & FDC_NODMA)) 1919 isa_dmadone(idf, 1920 bp->bio_data + fd->skip, 1921 format ? bp->bio_bcount : fdblk, 1922 fdc->dmachan); 1923 fdc->retry = 6; 1924 return (retrier(fdc)); 1925 } 1926 } else if (rdsectid) { 1927 if (fd_cmd(fdc, 2, NE7CMD_READID, head << 2 | fdu, 0)) { 1928 /* controller jamming */ 1929 fdc->retry = 6; 1930 return (retrier(fdc)); 1931 } 1932 } else { 1933 /* read or write operation */ 1934 if (fdc->flags & FDC_NODMA) { 1935 /* 1936 * this seems to be necessary even when 1937 * reading data 1938 */ 1939 SET_BCDR(fdc, 1, fdblk, 0); 1940 1941 /* 1942 * perform the write pseudo-DMA before 1943 * the WRITE command is sent 1944 */ 1945 if (!read) 1946 (void)fdcpio(fdc,bp->bio_cmd, 1947 bp->bio_data+fd->skip, 1948 fdblk); 1949 } 1950 if (fd_cmd(fdc, 9, 1951 (read ? NE7CMD_READ : NE7CMD_WRITE), 1952 head << 2 | fdu, /* head & unit */ 1953 fd->track, /* track */ 1954 head, 1955 sec, /* sector + 1 */ 1956 fd->ft->secsize, /* sector size */ 1957 sectrac, /* sectors/track */ 1958 fd->ft->gap, /* gap size */ 1959 fd->ft->datalen, /* data length */ 1960 0)) { 1961 /* the beast is sleeping again */ 1962 if (!(fdc->flags & FDC_NODMA)) 1963 isa_dmadone(idf, 1964 bp->bio_data + fd->skip, 1965 format ? bp->bio_bcount : fdblk, 1966 fdc->dmachan); 1967 fdc->retry = 6; 1968 return (retrier(fdc)); 1969 } 1970 } 1971 if (!rdsectid && (fdc->flags & FDC_NODMA)) 1972 /* 1973 * if this is a read, then simply await interrupt 1974 * before performing PIO 1975 */ 1976 if (read && !fdcpio(fdc,bp->bio_cmd, 1977 bp->bio_data+fd->skip,fdblk)) { 1978 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 1979 return(0); /* will return later */ 1980 } 1981 1982 /* 1983 * write (or format) operation will fall through and 1984 * await completion interrupt 1985 */ 1986 fdc->state = IOCOMPLETE; 1987 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 1988 return (0); /* will return later */ 1989 case PIOREAD: 1990 /* 1991 * actually perform the PIO read. The IOCOMPLETE case 1992 * removes the timeout for us. 1993 */ 1994 (void)fdcpio(fdc,bp->bio_cmd,bp->bio_data+fd->skip,fdblk); 1995 fdc->state = IOCOMPLETE; 1996 /* FALLTHROUGH */ 1997 case IOCOMPLETE: /* IO DONE, post-analyze */ 1998 untimeout(fd_iotimeout, fdc, fd->tohandle); 1999 2000 if (fd_read_status(fdc)) { 2001 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 2002 isa_dmadone(idf, bp->bio_data + fd->skip, 2003 format ? bp->bio_bcount : fdblk, 2004 fdc->dmachan); 2005 if (fdc->retry < 6) 2006 fdc->retry = 6; /* force a reset */ 2007 return (retrier(fdc)); 2008 } 2009 2010 fdc->state = IOTIMEDOUT; 2011 2012 /* FALLTHROUGH */ 2013 2014 case IOTIMEDOUT: 2015 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 2016 isa_dmadone(idf, bp->bio_data + fd->skip, 2017 format ? bp->bio_bcount : fdblk, fdc->dmachan); 2018 if (fdc->status[0] & NE7_ST0_IC) { 2019 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2020 && fdc->status[1] & NE7_ST1_OR) { 2021 /* 2022 * DMA overrun. Someone hogged the bus 2023 * and didn't release it in time for the 2024 * next FDC transfer. 2025 * Just restart it, don't increment retry 2026 * count. (vak) 2027 */ 2028 fdc->state = SEEKCOMPLETE; 2029 return (1); 2030 } 2031 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV 2032 && fdc->retry < 6) 2033 fdc->retry = 6; /* force a reset */ 2034 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2035 && fdc->status[2] & NE7_ST2_WC 2036 && fdc->retry < 3) 2037 fdc->retry = 3; /* force recalibrate */ 2038 return (retrier(fdc)); 2039 } 2040 /* All OK */ 2041 if (rdsectid) { 2042 /* copy out ID field contents */ 2043 idp = (struct fdc_readid *)bp->bio_data; 2044 idp->cyl = fdc->status[3]; 2045 idp->head = fdc->status[4]; 2046 idp->sec = fdc->status[5]; 2047 idp->secshift = fdc->status[6]; 2048 } 2049 fd->skip += fdblk; 2050 if (!rdsectid && !format && fd->skip < bp->bio_bcount - bp->bio_resid) { 2051 /* set up next transfer */ 2052 fdc->state = DOSEEK; 2053 } else { 2054 /* ALL DONE */ 2055 fd->skip = 0; 2056 fdc->bp = NULL; 2057 device_unbusy(fd->dev); 2058 biofinish(bp, &fd->device_stats, 0); 2059 fdc->fd = (fd_p) 0; 2060 fdc->fdu = -1; 2061 fdc->state = FINDWORK; 2062 } 2063 return (1); 2064 case RESETCTLR: 2065 fdc_reset(fdc); 2066 fdc->retry++; 2067 fdc->state = RESETCOMPLETE; 2068 return (0); 2069 case RESETCOMPLETE: 2070 /* 2071 * Discard all the results from the reset so that they 2072 * can't cause an unexpected interrupt later. 2073 */ 2074 for (i = 0; i < 4; i++) 2075 (void)fd_sense_int(fdc, &st0, &cyl); 2076 fdc->state = STARTRECAL; 2077 /* Fall through. */ 2078 case STARTRECAL: 2079 if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) { 2080 /* arrgl */ 2081 fdc->retry = 6; 2082 return (retrier(fdc)); 2083 } 2084 fdc->state = RECALWAIT; 2085 return (0); /* will return later */ 2086 case RECALWAIT: 2087 /* allow heads to settle */ 2088 timeout(fd_pseudointr, fdc, hz / 8); 2089 fdc->state = RECALCOMPLETE; 2090 return (0); /* will return later */ 2091 case RECALCOMPLETE: 2092 do { 2093 /* 2094 * See SEEKCOMPLETE for a comment on this: 2095 */ 2096 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 2097 return 0; 2098 if(fdc->fdct == FDC_NE765 2099 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 2100 return 0; /* hope for a real intr */ 2101 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 2102 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0) 2103 { 2104 if(fdc->retry > 3) 2105 /* 2106 * a recalibrate from beyond cylinder 77 2107 * will "fail" due to the FDC limitations; 2108 * since people used to complain much about 2109 * the failure message, try not logging 2110 * this one if it seems to be the first 2111 * time in a line 2112 */ 2113 printf("fd%d: recal failed ST0 %b cyl %d\n", 2114 fdu, st0, NE7_ST0BITS, cyl); 2115 if(fdc->retry < 3) fdc->retry = 3; 2116 return (retrier(fdc)); 2117 } 2118 fd->track = 0; 2119 /* Seek (probably) necessary */ 2120 fdc->state = DOSEEK; 2121 return (1); /* will return immediatly */ 2122 case MOTORWAIT: 2123 if(fd->flags & FD_MOTOR_WAIT) 2124 { 2125 return (0); /* time's not up yet */ 2126 } 2127 if (fdc->flags & FDC_NEEDS_RESET) { 2128 fdc->state = RESETCTLR; 2129 fdc->flags &= ~FDC_NEEDS_RESET; 2130 } else { 2131 /* 2132 * If all motors were off, then the controller was 2133 * reset, so it has lost track of the current 2134 * cylinder. Recalibrate to handle this case. 2135 * But first, discard the results of the reset. 2136 */ 2137 fdc->state = RESETCOMPLETE; 2138 } 2139 return (1); /* will return immediatly */ 2140 default: 2141 device_printf(fdc->fdc_dev, "unexpected FD int->"); 2142 if (fd_read_status(fdc) == 0) 2143 printf("FDC status :%x %x %x %x %x %x %x ", 2144 fdc->status[0], 2145 fdc->status[1], 2146 fdc->status[2], 2147 fdc->status[3], 2148 fdc->status[4], 2149 fdc->status[5], 2150 fdc->status[6] ); 2151 else 2152 printf("No status available "); 2153 if (fd_sense_int(fdc, &st0, &cyl) != 0) 2154 { 2155 printf("[controller is dead now]\n"); 2156 return (0); 2157 } 2158 printf("ST0 = %x, PCN = %x\n", st0, cyl); 2159 return (0); 2160 } 2161 /*XXX confusing: some branches return immediately, others end up here*/ 2162 return (1); /* Come back immediatly to new state */ 2163 } 2164 2165 static int 2166 retrier(struct fdc_data *fdc) 2167 { 2168 struct bio *bp; 2169 struct fd_data *fd; 2170 int fdu; 2171 2172 bp = fdc->bp; 2173 2174 /* XXX shouldn't this be cached somewhere? */ 2175 fdu = FDUNIT(minor(bp->bio_dev)); 2176 fd = devclass_get_softc(fd_devclass, fdu); 2177 if (fd->options & FDOPT_NORETRY) 2178 goto fail; 2179 2180 switch (fdc->retry) { 2181 case 0: case 1: case 2: 2182 fdc->state = SEEKCOMPLETE; 2183 break; 2184 case 3: case 4: case 5: 2185 fdc->state = STARTRECAL; 2186 break; 2187 case 6: 2188 fdc->state = RESETCTLR; 2189 break; 2190 case 7: 2191 break; 2192 default: 2193 fail: 2194 { 2195 int printerror = (fd->options & FDOPT_NOERRLOG) == 0; 2196 2197 if (printerror) 2198 diskerr(bp, "hard error", 2199 fdc->fd->skip / DEV_BSIZE, 2200 (struct disklabel *)NULL); 2201 if (printerror) { 2202 if (fdc->flags & FDC_STAT_VALID) 2203 { 2204 printf( 2205 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n", 2206 fdc->status[0], NE7_ST0BITS, 2207 fdc->status[1], NE7_ST1BITS, 2208 fdc->status[2], NE7_ST2BITS, 2209 fdc->status[3], fdc->status[4], 2210 fdc->status[5]); 2211 } 2212 else 2213 printf(" (No status)\n"); 2214 } 2215 } 2216 if ((fd->options & FDOPT_NOERROR) == 0) { 2217 bp->bio_flags |= BIO_ERROR; 2218 bp->bio_error = EIO; 2219 bp->bio_resid += bp->bio_bcount - fdc->fd->skip; 2220 } 2221 fdc->bp = NULL; 2222 fdc->fd->skip = 0; 2223 device_unbusy(fd->dev); 2224 biofinish(bp, &fdc->fd->device_stats, 0); 2225 fdc->state = FINDWORK; 2226 fdc->flags |= FDC_NEEDS_RESET; 2227 fdc->fd = (fd_p) 0; 2228 fdc->fdu = -1; 2229 return (1); 2230 } 2231 fdc->retry++; 2232 return (1); 2233 } 2234 2235 static void 2236 fdbiodone(struct bio *bp) 2237 { 2238 wakeup(bp); 2239 } 2240 2241 static int 2242 fdformat(dev_t dev, struct fd_formb *finfo, struct proc *p) 2243 { 2244 fdu_t fdu; 2245 fd_p fd; 2246 2247 struct bio *bp; 2248 int rv = 0, s; 2249 size_t fdblk; 2250 2251 fdu = FDUNIT(minor(dev)); 2252 fd = devclass_get_softc(fd_devclass, fdu); 2253 fdblk = 128 << fd->ft->secsize; 2254 2255 /* set up a buffer header for fdstrategy() */ 2256 bp = (struct bio *)malloc(sizeof(struct bio), M_TEMP, M_NOWAIT); 2257 if(bp == 0) 2258 return ENOMEM; 2259 /* 2260 * keep the process from being swapped 2261 */ 2262 PHOLD(p); 2263 bzero((void *)bp, sizeof(*bp)); 2264 bp->bio_cmd = BIO_FORMAT; 2265 2266 /* 2267 * calculate a fake blkno, so fdstrategy() would initiate a 2268 * seek to the requested cylinder 2269 */ 2270 bp->bio_blkno = (finfo->cyl * (fd->ft->sectrac * fd->ft->heads) 2271 + finfo->head * fd->ft->sectrac) * fdblk / DEV_BSIZE; 2272 2273 bp->bio_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2274 bp->bio_data = (caddr_t)finfo; 2275 2276 /* now do the format */ 2277 bp->bio_dev = dev; 2278 bp->bio_done = fdbiodone; 2279 fdstrategy(bp); 2280 2281 /* ...and wait for it to complete */ 2282 s = splbio(); 2283 while(!(bp->bio_flags & BIO_DONE)) { 2284 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2285 if (rv == EWOULDBLOCK) 2286 break; 2287 } 2288 splx(s); 2289 2290 if (rv == EWOULDBLOCK) { 2291 /* timed out */ 2292 rv = EIO; 2293 device_unbusy(fd->dev); 2294 } 2295 if (bp->bio_flags & BIO_ERROR) 2296 rv = bp->bio_error; 2297 /* 2298 * allow the process to be swapped 2299 */ 2300 PRELE(p); 2301 free(bp, M_TEMP); 2302 return rv; 2303 } 2304 2305 static int 2306 fdreadid(dev_t dev, struct fdc_readid *idfield) 2307 { 2308 fdu_t fdu; 2309 fd_p fd; 2310 2311 struct bio *bp; 2312 int rv = 0, s; 2313 size_t fdblk; 2314 2315 fdu = FDUNIT(minor(dev)); 2316 fd = devclass_get_softc(fd_devclass, fdu); 2317 fdblk = 128 << fd->ft->secsize; 2318 2319 /* set up a buffer header for fdstrategy() */ 2320 bp = (struct bio *)malloc(sizeof(struct bio), M_TEMP, M_NOWAIT); 2321 if(bp == 0) 2322 return ENOMEM; 2323 2324 bzero((void *)bp, sizeof(*bp)); 2325 bp->bio_cmd = BIO_READ; 2326 bp->bio_flags |= BIO_RDSECTID; 2327 2328 /* 2329 * calculate a fake blkno, so fdstrategy() would initiate a 2330 * seek to the requested cylinder 2331 */ 2332 bp->bio_blkno = (idfield->cyl * (fd->ft->sectrac * fd->ft->heads) 2333 + idfield->head * fd->ft->sectrac) * fdblk / DEV_BSIZE; 2334 bp->bio_bcount = sizeof(struct fdc_readid); 2335 bp->bio_data = (caddr_t)idfield; 2336 bp->bio_dev = dev; 2337 bp->bio_done = fdbiodone; 2338 fdstrategy(bp); 2339 2340 /* ...and wait for it to complete */ 2341 s = splbio(); 2342 while(!(bp->bio_flags & BIO_DONE)) { 2343 rv = tsleep((caddr_t)bp, PRIBIO, "fdrdid", 10 * hz); 2344 if (rv == EWOULDBLOCK) 2345 break; 2346 } 2347 splx(s); 2348 2349 if (rv == EWOULDBLOCK) { 2350 /* timed out */ 2351 rv = EIO; 2352 device_unbusy(fd->dev); 2353 } 2354 if (bp->bio_flags & BIO_ERROR) 2355 rv = bp->bio_error; 2356 free(bp, M_TEMP); 2357 return rv; 2358 } 2359 2360 /* 2361 * TODO: don't allocate buffer on stack. 2362 */ 2363 2364 static int 2365 fdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) 2366 { 2367 fdu_t fdu = FDUNIT(minor(dev)); 2368 fd_p fd = devclass_get_softc(fd_devclass, fdu); 2369 size_t fdblk; 2370 2371 struct fd_type *fdt; 2372 struct disklabel *dl; 2373 struct fdc_status *fsp; 2374 struct fdc_readid *rid; 2375 char buffer[DEV_BSIZE]; 2376 int error = 0; 2377 2378 fdblk = 128 << fd->ft->secsize; 2379 2380 switch (cmd) { 2381 case DIOCGDINFO: 2382 bzero(buffer, sizeof (buffer)); 2383 dl = (struct disklabel *)buffer; 2384 dl->d_secsize = fdblk; 2385 fdt = fd->ft; 2386 dl->d_secpercyl = fdt->size / fdt->tracks; 2387 dl->d_type = DTYPE_FLOPPY; 2388 2389 if (readdisklabel(dkmodpart(dev, RAW_PART), dl) 2390 == NULL) 2391 error = 0; 2392 else 2393 error = EINVAL; 2394 2395 *(struct disklabel *)addr = *dl; 2396 break; 2397 2398 case DIOCSDINFO: 2399 if ((flag & FWRITE) == 0) 2400 error = EBADF; 2401 break; 2402 2403 case DIOCWLABEL: 2404 if ((flag & FWRITE) == 0) 2405 error = EBADF; 2406 break; 2407 2408 case DIOCWDINFO: 2409 if ((flag & FWRITE) == 0) { 2410 error = EBADF; 2411 break; 2412 } 2413 2414 dl = (struct disklabel *)addr; 2415 2416 if ((error = setdisklabel((struct disklabel *)buffer, dl, 2417 (u_long)0)) != 0) 2418 break; 2419 2420 error = writedisklabel(dev, (struct disklabel *)buffer); 2421 break; 2422 case FD_FORM: 2423 if ((flag & FWRITE) == 0) 2424 error = EBADF; /* must be opened for writing */ 2425 else if (((struct fd_formb *)addr)->format_version != 2426 FD_FORMAT_VERSION) 2427 error = EINVAL; /* wrong version of formatting prog */ 2428 else 2429 error = fdformat(dev, (struct fd_formb *)addr, p); 2430 break; 2431 2432 case FD_GTYPE: /* get drive type */ 2433 *(struct fd_type *)addr = *fd->ft; 2434 break; 2435 2436 case FD_STYPE: /* set drive type */ 2437 /* this is considered harmful; only allow for superuser */ 2438 if (suser(p) != 0) 2439 return EPERM; 2440 *fd->ft = *(struct fd_type *)addr; 2441 break; 2442 2443 case FD_GOPTS: /* get drive options */ 2444 *(int *)addr = fd->options; 2445 break; 2446 2447 case FD_SOPTS: /* set drive options */ 2448 fd->options = *(int *)addr; 2449 break; 2450 2451 case FD_CLRERR: 2452 if (suser(p) != 0) 2453 return EPERM; 2454 fd->fdc->fdc_errs = 0; 2455 break; 2456 2457 case FD_GSTAT: 2458 fsp = (struct fdc_status *)addr; 2459 if ((fd->fdc->flags & FDC_STAT_VALID) == 0) 2460 return EINVAL; 2461 memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); 2462 break; 2463 2464 case FD_READID: 2465 rid = (struct fdc_readid *)addr; 2466 if (rid->cyl > MAX_CYLINDER || rid->head > MAX_HEAD) 2467 return EINVAL; 2468 error = fdreadid(dev, rid); 2469 break; 2470 2471 default: 2472 error = ENOTTY; 2473 break; 2474 } 2475 return (error); 2476 } 2477