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_CMD1 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 eventhandler_tag clonetag; 183 dev_t masterdev; 184 #define NCLONEDEVS 10 /* must match the table below */ 185 dev_t clonedevs[NCLONEDEVS]; 186 device_t dev; 187 fdu_t fdu; 188 }; 189 190 struct fdc_ivars { 191 int fdunit; 192 }; 193 static devclass_t fd_devclass; 194 195 /***********************************************************************\ 196 * Throughout this file the following conventions will be used: * 197 * fd is a pointer to the fd_data struct for the drive in question * 198 * fdc is a pointer to the fdc_data struct for the controller * 199 * fdu is the floppy drive unit number * 200 * fdcu is the floppy controller unit number * 201 * fdsu is the floppy drive unit number on that controller. (sub-unit) * 202 \***********************************************************************/ 203 204 /* internal functions */ 205 static driver_intr_t fdc_intr; 206 static void set_motor(struct fdc_data *, int, int); 207 # define TURNON 1 208 # define TURNOFF 0 209 static timeout_t fd_turnoff; 210 static timeout_t fd_motor_on; 211 static void fd_turnon(struct fd_data *); 212 static void fdc_reset(fdc_p); 213 static int fd_in(struct fdc_data *, int *); 214 static int out_fdc(struct fdc_data *, int); 215 static void fdstart(struct fdc_data *); 216 static timeout_t fd_iotimeout; 217 static timeout_t fd_pseudointr; 218 static int fdstate(struct fdc_data *); 219 static int retrier(struct fdc_data *); 220 static int fdmisccmd(dev_t, u_int, void *); 221 222 static int enable_fifo(fdc_p fdc); 223 static void fd_clone (void *arg, char *name, int namelen, dev_t *dev); 224 225 static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */ 226 227 #ifdef FDC_DEBUG 228 static char const * const fdstates[] = 229 { 230 "DEVIDLE", 231 "FINDWORK", 232 "DOSEEK", 233 "SEEKCOMPLETE", 234 "IOCOMPLETE", 235 "RECALCOMPLETE", 236 "STARTRECAL", 237 "RESETCTLR", 238 "SEEKWAIT", 239 "RECALWAIT", 240 "MOTORWAIT", 241 "IOTIMEDOUT", 242 "RESETCOMPLETE", 243 "PIOREAD", 244 }; 245 246 /* CAUTION: fd_debug causes huge amounts of logging output */ 247 static int volatile fd_debug = 0; 248 #define TRACE0(arg) if(fd_debug) printf(arg) 249 #define TRACE1(arg1, arg2) if(fd_debug) printf(arg1, arg2) 250 #else /* FDC_DEBUG */ 251 #define TRACE0(arg) 252 #define TRACE1(arg1, arg2) 253 #endif /* FDC_DEBUG */ 254 255 static void 256 fdout_wr(fdc_p fdc, u_int8_t v) 257 { 258 bus_space_write_1(fdc->portt, fdc->porth, FDOUT+fdc->port_off, v); 259 } 260 261 static u_int8_t 262 fdsts_rd(fdc_p fdc) 263 { 264 return bus_space_read_1(fdc->portt, fdc->porth, FDSTS+fdc->port_off); 265 } 266 267 static void 268 fddata_wr(fdc_p fdc, u_int8_t v) 269 { 270 bus_space_write_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off, v); 271 } 272 273 static u_int8_t 274 fddata_rd(fdc_p fdc) 275 { 276 return bus_space_read_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off); 277 } 278 279 static void 280 fdctl_wr_isa(fdc_p fdc, u_int8_t v) 281 { 282 bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v); 283 } 284 285 #if NCARD > 0 286 static void 287 fdctl_wr_pcmcia(fdc_p fdc, u_int8_t v) 288 { 289 bus_space_write_1(fdc->portt, fdc->porth, FDCTL+fdc->port_off, v); 290 } 291 #endif 292 293 #if 0 294 295 static u_int8_t 296 fdin_rd(fdc_p fdc) 297 { 298 return bus_space_read_1(fdc->portt, fdc->porth, FDIN); 299 } 300 301 #endif 302 303 /* 304 * The open function is named Fdopen() to avoid confusion with fdopen() 305 * in fd(4). The difference is now only meaningful for debuggers. 306 */ 307 static d_open_t Fdopen; 308 static d_close_t fdclose; 309 static d_ioctl_t fdioctl; 310 static d_strategy_t fdstrategy; 311 312 #define CDEV_MAJOR 9 313 static struct cdevsw fd_cdevsw = { 314 /* open */ Fdopen, 315 /* close */ fdclose, 316 /* read */ physread, 317 /* write */ physwrite, 318 /* ioctl */ fdioctl, 319 /* poll */ nopoll, 320 /* mmap */ nommap, 321 /* strategy */ fdstrategy, 322 /* name */ "fd", 323 /* maj */ CDEV_MAJOR, 324 /* dump */ nodump, 325 /* psize */ nopsize, 326 /* flags */ D_DISK, 327 }; 328 329 static int 330 fdc_err(struct fdc_data *fdc, const char *s) 331 { 332 fdc->fdc_errs++; 333 if (s) { 334 if (fdc->fdc_errs < FDC_ERRMAX) 335 device_printf(fdc->fdc_dev, "%s", s); 336 else if (fdc->fdc_errs == FDC_ERRMAX) 337 device_printf(fdc->fdc_dev, "too many errors, not " 338 "logging any more\n"); 339 } 340 341 return FD_FAILED; 342 } 343 344 /* 345 * fd_cmd: Send a command to the chip. Takes a varargs with this structure: 346 * Unit number, 347 * # of output bytes, output bytes as ints ..., 348 * # of input bytes, input bytes as ints ... 349 */ 350 static int 351 fd_cmd(struct fdc_data *fdc, int n_out, ...) 352 { 353 u_char cmd; 354 int n_in; 355 int n; 356 va_list ap; 357 358 va_start(ap, n_out); 359 cmd = (u_char)(va_arg(ap, int)); 360 va_end(ap); 361 va_start(ap, n_out); 362 for (n = 0; n < n_out; n++) 363 { 364 if (out_fdc(fdc, va_arg(ap, int)) < 0) 365 { 366 char msg[50]; 367 snprintf(msg, sizeof(msg), 368 "cmd %x failed at out byte %d of %d\n", 369 cmd, n + 1, n_out); 370 return fdc_err(fdc, msg); 371 } 372 } 373 n_in = va_arg(ap, int); 374 for (n = 0; n < n_in; n++) 375 { 376 int *ptr = va_arg(ap, int *); 377 if (fd_in(fdc, ptr) < 0) 378 { 379 char msg[50]; 380 snprintf(msg, sizeof(msg), 381 "cmd %02x failed at in byte %d of %d\n", 382 cmd, n + 1, n_in); 383 return fdc_err(fdc, msg); 384 } 385 } 386 387 return 0; 388 } 389 390 static int 391 enable_fifo(fdc_p fdc) 392 { 393 int i, j; 394 395 if ((fdc->flags & FDC_HAS_FIFO) == 0) { 396 397 /* 398 * Cannot use fd_cmd the normal way here, since 399 * this might be an invalid command. Thus we send the 400 * first byte, and check for an early turn of data directon. 401 */ 402 403 if (out_fdc(fdc, I8207X_CONFIGURE) < 0) 404 return fdc_err(fdc, "Enable FIFO failed\n"); 405 406 /* If command is invalid, return */ 407 j = 100000; 408 while ((i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM)) 409 != NE7_RQM && j-- > 0) 410 if (i == (NE7_DIO | NE7_RQM)) { 411 fdc_reset(fdc); 412 return FD_FAILED; 413 } 414 if (j<0 || 415 fd_cmd(fdc, 3, 416 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) { 417 fdc_reset(fdc); 418 return fdc_err(fdc, "Enable FIFO failed\n"); 419 } 420 fdc->flags |= FDC_HAS_FIFO; 421 return 0; 422 } 423 if (fd_cmd(fdc, 4, 424 I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) 425 return fdc_err(fdc, "Re-enable FIFO failed\n"); 426 return 0; 427 } 428 429 static int 430 fd_sense_drive_status(fdc_p fdc, int *st3p) 431 { 432 int st3; 433 434 if (fd_cmd(fdc, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3)) 435 { 436 return fdc_err(fdc, "Sense Drive Status failed\n"); 437 } 438 if (st3p) 439 *st3p = st3; 440 441 return 0; 442 } 443 444 static int 445 fd_sense_int(fdc_p fdc, int *st0p, int *cylp) 446 { 447 int cyl, st0, ret; 448 449 ret = fd_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); 450 if (ret) { 451 (void)fdc_err(fdc, 452 "sense intr err reading stat reg 0\n"); 453 return ret; 454 } 455 456 if (st0p) 457 *st0p = st0; 458 459 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { 460 /* 461 * There doesn't seem to have been an interrupt. 462 */ 463 return FD_NOT_VALID; 464 } 465 466 if (fd_in(fdc, &cyl) < 0) { 467 return fdc_err(fdc, "can't get cyl num\n"); 468 } 469 470 if (cylp) 471 *cylp = cyl; 472 473 return 0; 474 } 475 476 477 static int 478 fd_read_status(fdc_p fdc) 479 { 480 int i, ret; 481 482 for (i = 0; i < 7; i++) { 483 /* 484 * XXX types are poorly chosen. Only bytes can be read 485 * from the hardware, but fdc->status[] wants u_ints and 486 * fd_in() gives ints. 487 */ 488 int status; 489 490 ret = fd_in(fdc, &status); 491 fdc->status[i] = status; 492 if (ret != 0) 493 break; 494 } 495 496 if (ret == 0) 497 fdc->flags |= FDC_STAT_VALID; 498 else 499 fdc->flags &= ~FDC_STAT_VALID; 500 501 return ret; 502 } 503 504 /****************************************************************************/ 505 /* autoconfiguration stuff */ 506 /****************************************************************************/ 507 508 static int 509 fdc_alloc_resources(struct fdc_data *fdc) 510 { 511 device_t dev; 512 int ispnp, ispcmcia, nports; 513 514 dev = fdc->fdc_dev; 515 ispnp = (fdc->flags & FDC_ISPNP) != 0; 516 ispcmcia = (fdc->flags & FDC_ISPCMCIA) != 0; 517 fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0; 518 fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0; 519 520 /* 521 * On standard ISA, we don't just use an 8 port range 522 * (e.g. 0x3f0-0x3f7) since that covers an IDE control 523 * register at 0x3f6. 524 * 525 * Isn't PC hardware wonderful. 526 * 527 * The Y-E Data PCMCIA FDC doesn't have this problem, it 528 * uses the register with offset 6 for pseudo-DMA, and the 529 * one with offset 7 as control register. 530 */ 531 nports = ispcmcia ? 8 : (ispnp ? 1 : 6); 532 fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT, 533 &fdc->rid_ioport, 0ul, ~0ul, 534 nports, RF_ACTIVE); 535 if (fdc->res_ioport == 0) { 536 device_printf(dev, "cannot reserve I/O port range (%d ports)\n", 537 nports); 538 return ENXIO; 539 } 540 fdc->portt = rman_get_bustag(fdc->res_ioport); 541 fdc->porth = rman_get_bushandle(fdc->res_ioport); 542 543 if (!ispcmcia) { 544 /* 545 * Some BIOSen report the device at 0x3f2-0x3f5,0x3f7 546 * and some at 0x3f0-0x3f5,0x3f7. We detect the former 547 * by checking the size and adjust the port address 548 * accordingly. 549 */ 550 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 0) == 4) 551 fdc->port_off = -2; 552 553 /* 554 * Register the control port range as rid 1 if it 555 * isn't there already. Most PnP BIOSen will have 556 * already done this but non-PnP configurations don't. 557 * 558 * And some (!!) report 0x3f2-0x3f5 and completely 559 * leave out the control register! It seems that some 560 * non-antique controller chips have a different 561 * method of programming the transfer speed which 562 * doesn't require the control register, but it's 563 * mighty bogus as the chip still responds to the 564 * address for the control register. 565 */ 566 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 1) == 0) { 567 u_long ctlstart; 568 569 /* Find the control port, usually 0x3f7 */ 570 ctlstart = rman_get_start(fdc->res_ioport) + 571 fdc->port_off + 7; 572 573 bus_set_resource(dev, SYS_RES_IOPORT, 1, ctlstart, 1); 574 } 575 576 /* 577 * Now (finally!) allocate the control port. 578 */ 579 fdc->rid_ctl = 1; 580 fdc->res_ctl = bus_alloc_resource(dev, SYS_RES_IOPORT, 581 &fdc->rid_ctl, 582 0ul, ~0ul, 1, RF_ACTIVE); 583 if (fdc->res_ctl == 0) { 584 device_printf(dev, 585 "cannot reserve control I/O port range (control port)\n"); 586 return ENXIO; 587 } 588 fdc->ctlt = rman_get_bustag(fdc->res_ctl); 589 fdc->ctlh = rman_get_bushandle(fdc->res_ctl); 590 } 591 592 fdc->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ, 593 &fdc->rid_irq, 0ul, ~0ul, 1, 594 RF_ACTIVE); 595 if (fdc->res_irq == 0) { 596 device_printf(dev, "cannot reserve interrupt line\n"); 597 return ENXIO; 598 } 599 600 if ((fdc->flags & FDC_NODMA) == 0) { 601 fdc->res_drq = bus_alloc_resource(dev, SYS_RES_DRQ, 602 &fdc->rid_drq, 0ul, ~0ul, 1, 603 RF_ACTIVE); 604 if (fdc->res_drq == 0) { 605 device_printf(dev, "cannot reserve DMA request line\n"); 606 return ENXIO; 607 } 608 fdc->dmachan = fdc->res_drq->r_start; 609 } 610 611 return 0; 612 } 613 614 static void 615 fdc_release_resources(struct fdc_data *fdc) 616 { 617 device_t dev; 618 619 dev = fdc->fdc_dev; 620 if (fdc->res_irq != 0) { 621 bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 622 fdc->res_irq); 623 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 624 fdc->res_irq); 625 } 626 if (fdc->res_ctl != 0) { 627 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 628 fdc->res_ctl); 629 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 630 fdc->res_ctl); 631 } 632 if (fdc->res_ioport != 0) { 633 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 634 fdc->res_ioport); 635 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 636 fdc->res_ioport); 637 } 638 if (fdc->res_drq != 0) { 639 bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 640 fdc->res_drq); 641 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 642 fdc->res_drq); 643 } 644 } 645 646 /****************************************************************************/ 647 /* autoconfiguration stuff */ 648 /****************************************************************************/ 649 650 static struct isa_pnp_id fdc_ids[] = { 651 {0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */ 652 {0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */ 653 {0} 654 }; 655 656 static int 657 fdc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 658 { 659 struct fdc_ivars *ivars = device_get_ivars(child); 660 661 switch (which) { 662 case FDC_IVAR_FDUNIT: 663 *result = ivars->fdunit; 664 break; 665 default: 666 return ENOENT; 667 } 668 return 0; 669 } 670 671 /* 672 * fdc controller section. 673 */ 674 static int 675 fdc_probe(device_t dev) 676 { 677 int error, ic_type; 678 struct fdc_data *fdc; 679 680 fdc = device_get_softc(dev); 681 bzero(fdc, sizeof *fdc); 682 fdc->fdc_dev = dev; 683 fdc->fdctl_wr = fdctl_wr_isa; 684 685 /* Check pnp ids */ 686 error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids); 687 if (error == ENXIO) 688 return ENXIO; 689 if (error == 0) 690 fdc->flags |= FDC_ISPNP; 691 692 /* Attempt to allocate our resources for the duration of the probe */ 693 error = fdc_alloc_resources(fdc); 694 if (error) 695 goto out; 696 697 /* First - lets reset the floppy controller */ 698 fdout_wr(fdc, 0); 699 DELAY(100); 700 fdout_wr(fdc, FDO_FRST); 701 702 /* see if it can handle a command */ 703 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 704 NE7_SPEC_2(2, 0), 0)) { 705 error = ENXIO; 706 goto out; 707 } 708 709 if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) { 710 ic_type = (u_char)ic_type; 711 switch (ic_type) { 712 case 0x80: 713 device_set_desc(dev, "NEC 765 or clone"); 714 fdc->fdct = FDC_NE765; 715 break; 716 case 0x81: 717 device_set_desc(dev, "Intel 82077 or clone"); 718 fdc->fdct = FDC_I82077; 719 break; 720 case 0x90: 721 device_set_desc(dev, "NEC 72065B or clone"); 722 fdc->fdct = FDC_NE72065; 723 break; 724 default: 725 device_set_desc(dev, "generic floppy controller"); 726 fdc->fdct = FDC_UNKNOWN; 727 break; 728 } 729 } 730 731 out: 732 fdc_release_resources(fdc); 733 return (error); 734 } 735 736 #if NCARD > 0 737 738 static int 739 fdc_pccard_probe(device_t dev) 740 { 741 int error; 742 struct fdc_data *fdc; 743 744 fdc = device_get_softc(dev); 745 bzero(fdc, sizeof *fdc); 746 fdc->fdc_dev = dev; 747 fdc->fdctl_wr = fdctl_wr_pcmcia; 748 749 fdc->flags |= FDC_ISPCMCIA | FDC_NODMA; 750 751 /* Attempt to allocate our resources for the duration of the probe */ 752 error = fdc_alloc_resources(fdc); 753 if (error) 754 goto out; 755 756 /* First - lets reset the floppy controller */ 757 fdout_wr(fdc, 0); 758 DELAY(100); 759 fdout_wr(fdc, FDO_FRST); 760 761 /* see if it can handle a command */ 762 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 763 NE7_SPEC_2(2, 0), 0)) { 764 error = ENXIO; 765 goto out; 766 } 767 768 device_set_desc(dev, "Y-E Data PCMCIA floppy"); 769 fdc->fdct = FDC_NE765; 770 771 out: 772 fdc_release_resources(fdc); 773 return (error); 774 } 775 776 #endif /* NCARD > 0 */ 777 778 static int 779 fdc_detach(device_t dev) 780 { 781 struct fdc_data *fdc; 782 int error; 783 784 fdc = device_get_softc(dev); 785 786 /* have our children detached first */ 787 if ((error = bus_generic_detach(dev))) 788 return (error); 789 790 /* reset controller, turn motor off */ 791 fdout_wr(fdc, 0); 792 793 if ((fdc->flags & FDC_NODMA) == 0) 794 isa_dma_release(fdc->dmachan); 795 796 if ((fdc->flags & FDC_ATTACHED) == 0) { 797 device_printf(dev, "already unloaded\n"); 798 return (0); 799 } 800 fdc->flags &= ~FDC_ATTACHED; 801 802 BUS_TEARDOWN_INTR(device_get_parent(dev), dev, fdc->res_irq, 803 fdc->fdc_intr); 804 fdc_release_resources(fdc); 805 device_printf(dev, "unload\n"); 806 return (0); 807 } 808 809 /* 810 * Add a child device to the fdc controller. It will then be probed etc. 811 */ 812 static void 813 fdc_add_child(device_t dev, const char *name, int unit) 814 { 815 int disabled; 816 struct fdc_ivars *ivar; 817 device_t child; 818 819 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT | M_ZERO); 820 if (ivar == NULL) 821 return; 822 if (resource_int_value(name, unit, "drive", &ivar->fdunit) != 0) 823 ivar->fdunit = 0; 824 child = device_add_child(dev, name, unit); 825 if (child == NULL) 826 return; 827 device_set_ivars(child, ivar); 828 if (resource_int_value(name, unit, "disabled", &disabled) == 0 829 && disabled != 0) 830 device_disable(child); 831 } 832 833 static int 834 fdc_attach(device_t dev) 835 { 836 struct fdc_data *fdc; 837 const char *name, *dname; 838 device_t *children; 839 int i, error, dunit, nchildren; 840 841 fdc = device_get_softc(dev); 842 error = fdc_alloc_resources(fdc); 843 if (error) { 844 device_printf(dev, "cannot re-acquire resources\n"); 845 return error; 846 } 847 error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq, 848 INTR_TYPE_BIO | INTR_ENTROPY, fdc_intr, fdc, 849 &fdc->fdc_intr); 850 if (error) { 851 device_printf(dev, "cannot setup interrupt\n"); 852 return error; 853 } 854 fdc->fdcu = device_get_unit(dev); 855 fdc->flags |= FDC_ATTACHED; 856 857 if ((fdc->flags & FDC_NODMA) == 0) { 858 /* 859 * Acquire the DMA channel forever, the driver will do 860 * the rest 861 * XXX should integrate with rman 862 */ 863 isa_dma_acquire(fdc->dmachan); 864 isa_dmainit(fdc->dmachan, MAX_SEC_SIZE); 865 } 866 fdc->state = DEVIDLE; 867 868 /* reset controller, turn motor off, clear fdout mirror reg */ 869 fdout_wr(fdc, fdc->fdout = 0); 870 bioq_init(&fdc->head); 871 872 /* 873 * Probe and attach any children. We should probably detect 874 * devices from the BIOS unless overridden. 875 */ 876 name = device_get_nameunit(dev); 877 i = 0; 878 while ((resource_find_match(&i, &dname, &dunit, "at", name)) == 0) 879 fdc_add_child(dev, dname, dunit); 880 881 if ((error = bus_generic_attach(dev)) != 0) 882 return (error); 883 884 /* Now remove all children not successfully probed (if any). */ 885 if ((error = device_get_children(dev, &children, &nchildren)) != 0) 886 return (error); 887 for (i = 0; i < nchildren; i++) 888 if (!device_is_alive(children[i])) 889 device_delete_child(dev, children[i]); 890 891 return (0); 892 } 893 894 static int 895 fdc_print_child(device_t me, device_t child) 896 { 897 int retval = 0; 898 899 retval += bus_print_child_header(me, child); 900 retval += printf(" on %s drive %d\n", device_get_nameunit(me), 901 fdc_get_fdunit(child)); 902 903 return (retval); 904 } 905 906 static device_method_t fdc_methods[] = { 907 /* Device interface */ 908 DEVMETHOD(device_probe, fdc_probe), 909 DEVMETHOD(device_attach, fdc_attach), 910 DEVMETHOD(device_detach, fdc_detach), 911 DEVMETHOD(device_shutdown, bus_generic_shutdown), 912 DEVMETHOD(device_suspend, bus_generic_suspend), 913 DEVMETHOD(device_resume, bus_generic_resume), 914 915 /* Bus interface */ 916 DEVMETHOD(bus_print_child, fdc_print_child), 917 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 918 /* Our children never use any other bus interface methods. */ 919 920 { 0, 0 } 921 }; 922 923 static driver_t fdc_driver = { 924 "fdc", 925 fdc_methods, 926 sizeof(struct fdc_data) 927 }; 928 929 DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0); 930 931 #if NCARD > 0 932 933 static device_method_t fdc_pccard_methods[] = { 934 /* Device interface */ 935 DEVMETHOD(device_probe, fdc_pccard_probe), 936 DEVMETHOD(device_attach, fdc_attach), 937 DEVMETHOD(device_detach, fdc_detach), 938 DEVMETHOD(device_shutdown, bus_generic_shutdown), 939 DEVMETHOD(device_suspend, bus_generic_suspend), 940 DEVMETHOD(device_resume, bus_generic_resume), 941 942 /* Bus interface */ 943 DEVMETHOD(bus_print_child, fdc_print_child), 944 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 945 /* Our children never use any other bus interface methods. */ 946 947 { 0, 0 } 948 }; 949 950 static driver_t fdc_pccard_driver = { 951 "fdc", 952 fdc_pccard_methods, 953 sizeof(struct fdc_data) 954 }; 955 956 DRIVER_MODULE(fdc, pccard, fdc_pccard_driver, fdc_devclass, 0, 0); 957 958 #endif /* NCARD > 0 */ 959 960 static struct { 961 char *match; 962 int minor; 963 int link; 964 } fd_suffix[] = { 965 /* 966 * Genuine clone devices must come first, and their number must 967 * match NCLONEDEVS above. 968 */ 969 { ".1720", 1, 0 }, 970 { ".1480", 2, 0 }, 971 { ".1440", 3, 0 }, 972 { ".1200", 4, 0 }, 973 { ".820", 5, 0 }, 974 { ".800", 6, 0 }, 975 { ".720", 7, 0 }, 976 { ".360", 8, 0 }, 977 { ".640", 9, 0 }, 978 { ".1232", 10, 0 }, 979 { "a", 0, 1 }, 980 { "b", 0, 1 }, 981 { "c", 0, 1 }, 982 { "d", 0, 1 }, 983 { "e", 0, 1 }, 984 { "f", 0, 1 }, 985 { "g", 0, 1 }, 986 { "h", 0, 1 }, 987 { 0, 0 } 988 }; 989 static void 990 fd_clone(void *arg, char *name, int namelen, dev_t *dev) 991 { 992 struct fd_data *fd; 993 int u, d, i; 994 char *n; 995 996 fd = (struct fd_data *)arg; 997 if (*dev != NODEV) 998 return; 999 if (dev_stdclone(name, &n, "fd", &u) != 2) 1000 return; 1001 for (i = 0; ; i++) { 1002 if (fd_suffix[i].match == NULL) 1003 return; 1004 if (strcmp(n, fd_suffix[i].match)) 1005 continue; 1006 d = fd_suffix[i].minor; 1007 break; 1008 } 1009 if (fd_suffix[i].link == 0) { 1010 *dev = make_dev(&fd_cdevsw, (u << 6) + d, 1011 UID_ROOT, GID_OPERATOR, 0640, name); 1012 fd->clonedevs[i] = *dev; 1013 } else { 1014 *dev = make_dev_alias(fd->masterdev, name); 1015 } 1016 } 1017 1018 /******************************************************************/ 1019 /* 1020 * devices attached to the controller section. 1021 */ 1022 static int 1023 fd_probe(device_t dev) 1024 { 1025 int i; 1026 u_int fdt, st0, st3; 1027 struct fd_data *fd; 1028 struct fdc_data *fdc; 1029 fdsu_t fdsu; 1030 static int fd_fifo = 0; 1031 1032 fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */ 1033 fd = device_get_softc(dev); 1034 fdc = device_get_softc(device_get_parent(dev)); 1035 1036 bzero(fd, sizeof *fd); 1037 fd->dev = dev; 1038 fd->fdc = fdc; 1039 fd->fdsu = fdsu; 1040 fd->fdu = device_get_unit(dev); 1041 1042 #ifdef __i386__ 1043 /* look up what bios thinks we have */ 1044 switch (fd->fdu) { 1045 case 0: 1046 if ((fdc->flags & FDC_ISPCMCIA)) 1047 fdt = RTCFDT_144M; 1048 else if (device_get_flags(fdc->fdc_dev) & FDC_PRETEND_D0) 1049 fdt = RTCFDT_144M | RTCFDT_144M_PRETENDED; 1050 else 1051 fdt = (rtcin(RTC_FDISKETTE) & 0xf0); 1052 break; 1053 case 1: 1054 fdt = ((rtcin(RTC_FDISKETTE) << 4) & 0xf0); 1055 break; 1056 default: 1057 fdt = RTCFDT_NONE; 1058 break; 1059 } 1060 #else 1061 fdt = RTCFDT_144M; /* XXX probably */ 1062 #endif 1063 1064 /* is there a unit? */ 1065 if (fdt == RTCFDT_NONE) 1066 return (ENXIO); 1067 1068 /* select it */ 1069 set_motor(fdc, fdsu, TURNON); 1070 DELAY(1000000); /* 1 sec */ 1071 1072 /* XXX This doesn't work before the first set_motor() */ 1073 if (fd_fifo == 0 && fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN 1074 && (device_get_flags(fdc->fdc_dev) & FDC_NO_FIFO) == 0 1075 && enable_fifo(fdc) == 0) { 1076 device_printf(device_get_parent(dev), 1077 "FIFO enabled, %d bytes threshold\n", fifo_threshold); 1078 } 1079 fd_fifo = 1; 1080 1081 if ((fd_cmd(fdc, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) 1082 && (st3 & NE7_ST3_T0)) { 1083 /* if at track 0, first seek inwards */ 1084 /* seek some steps: */ 1085 fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0); 1086 DELAY(300000); /* ...wait a moment... */ 1087 fd_sense_int(fdc, 0, 0); /* make ctrlr happy */ 1088 } 1089 1090 /* If we're at track 0 first seek inwards. */ 1091 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) { 1092 /* Seek some steps... */ 1093 if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 1094 /* ...wait a moment... */ 1095 DELAY(300000); 1096 /* make ctrlr happy: */ 1097 fd_sense_int(fdc, 0, 0); 1098 } 1099 } 1100 1101 for (i = 0; i < 2; i++) { 1102 /* 1103 * we must recalibrate twice, just in case the 1104 * heads have been beyond cylinder 76, since most 1105 * FDCs still barf when attempting to recalibrate 1106 * more than 77 steps 1107 */ 1108 /* go back to 0: */ 1109 if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1110 /* a second being enough for full stroke seek*/ 1111 DELAY(i == 0 ? 1000000 : 300000); 1112 1113 /* anything responding? */ 1114 if (fd_sense_int(fdc, &st0, 0) == 0 && 1115 (st0 & NE7_ST0_EC) == 0) 1116 break; /* already probed succesfully */ 1117 } 1118 } 1119 1120 set_motor(fdc, fdsu, TURNOFF); 1121 1122 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */ 1123 return (ENXIO); 1124 1125 fd->track = FD_NO_TRACK; 1126 fd->fdc = fdc; 1127 fd->fdsu = fdsu; 1128 fd->options = 0; 1129 callout_handle_init(&fd->toffhandle); 1130 callout_handle_init(&fd->tohandle); 1131 1132 switch (fdt) { 1133 case RTCFDT_12M: 1134 device_set_desc(dev, "1200-KB 5.25\" drive"); 1135 fd->type = FD_1200; 1136 break; 1137 case RTCFDT_144M | RTCFDT_144M_PRETENDED: 1138 device_set_desc(dev, "config-pretended 1440-MB 3.5\" drive"); 1139 fdt = RTCFDT_144M; 1140 fd->type = FD_1440; 1141 case RTCFDT_144M: 1142 device_set_desc(dev, "1440-KB 3.5\" drive"); 1143 fd->type = FD_1440; 1144 break; 1145 case RTCFDT_288M: 1146 case RTCFDT_288M_1: 1147 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 1148 fd->type = FD_1440; 1149 break; 1150 case RTCFDT_360K: 1151 device_set_desc(dev, "360-KB 5.25\" drive"); 1152 fd->type = FD_360; 1153 break; 1154 case RTCFDT_720K: 1155 printf("720-KB 3.5\" drive"); 1156 fd->type = FD_720; 1157 break; 1158 default: 1159 return (ENXIO); 1160 } 1161 return (0); 1162 } 1163 1164 static int 1165 fd_attach(device_t dev) 1166 { 1167 struct fd_data *fd; 1168 static int cdevsw_add_done; 1169 int i; 1170 1171 if (!cdevsw_add_done) { 1172 cdevsw_add(&fd_cdevsw); /* XXX */ 1173 cdevsw_add_done = 1; 1174 } 1175 fd = device_get_softc(dev); 1176 fd->clonetag = EVENTHANDLER_REGISTER(dev_clone, fd_clone, fd, 1000); 1177 fd->masterdev = make_dev(&fd_cdevsw, fd->fdu << 6, 1178 UID_ROOT, GID_OPERATOR, 0640, "fd%d", fd->fdu); 1179 for (i = 0; i < NCLONEDEVS; i++) 1180 fd->clonedevs[i] = NODEV; 1181 devstat_add_entry(&fd->device_stats, device_get_name(dev), 1182 device_get_unit(dev), 0, DEVSTAT_NO_ORDERED_TAGS, 1183 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER, 1184 DEVSTAT_PRIORITY_FD); 1185 return (0); 1186 } 1187 1188 static int 1189 fd_detach(device_t dev) 1190 { 1191 struct fd_data *fd; 1192 int i; 1193 1194 fd = device_get_softc(dev); 1195 untimeout(fd_turnoff, fd, fd->toffhandle); 1196 devstat_remove_entry(&fd->device_stats); 1197 destroy_dev(fd->masterdev); 1198 for (i = 0; i < NCLONEDEVS; i++) 1199 if (fd->clonedevs[i] != NODEV) 1200 destroy_dev(fd->clonedevs[i]); 1201 cdevsw_remove(&fd_cdevsw); 1202 EVENTHANDLER_DEREGISTER(dev_clone, fd->clonetag); 1203 1204 return (0); 1205 } 1206 1207 static device_method_t fd_methods[] = { 1208 /* Device interface */ 1209 DEVMETHOD(device_probe, fd_probe), 1210 DEVMETHOD(device_attach, fd_attach), 1211 DEVMETHOD(device_detach, fd_detach), 1212 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1213 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 1214 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 1215 1216 { 0, 0 } 1217 }; 1218 1219 static driver_t fd_driver = { 1220 "fd", 1221 fd_methods, 1222 sizeof(struct fd_data) 1223 }; 1224 1225 DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, 0, 0); 1226 1227 /****************************************************************************/ 1228 /* motor control stuff */ 1229 /* remember to not deselect the drive we're working on */ 1230 /****************************************************************************/ 1231 static void 1232 set_motor(struct fdc_data *fdc, int fdsu, int turnon) 1233 { 1234 int fdout = fdc->fdout; 1235 int needspecify = 0; 1236 1237 if(turnon) { 1238 fdout &= ~FDO_FDSEL; 1239 fdout |= (FDO_MOEN0 << fdsu) + fdsu; 1240 } else 1241 fdout &= ~(FDO_MOEN0 << fdsu); 1242 1243 if(!turnon 1244 && (fdout & (FDO_MOEN0+FDO_MOEN1+FDO_MOEN2+FDO_MOEN3)) == 0) 1245 /* gonna turn off the last drive, put FDC to bed */ 1246 fdout &= ~ (FDO_FRST|FDO_FDMAEN); 1247 else { 1248 /* make sure controller is selected and specified */ 1249 if((fdout & (FDO_FRST|FDO_FDMAEN)) == 0) 1250 needspecify = 1; 1251 fdout |= (FDO_FRST|FDO_FDMAEN); 1252 } 1253 1254 fdout_wr(fdc, fdout); 1255 fdc->fdout = fdout; 1256 TRACE1("[0x%x->FDOUT]", fdout); 1257 1258 if (needspecify) { 1259 /* 1260 * we silently assume the command will be accepted 1261 * after an FDC reset 1262 * 1263 * Steinbach's Guideline for Systems Programming: 1264 * Never test for an error condition you don't know 1265 * how to handle. 1266 */ 1267 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1268 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1269 0); 1270 if (fdc->flags & FDC_HAS_FIFO) 1271 (void) enable_fifo(fdc); 1272 } 1273 } 1274 1275 static void 1276 fd_turnoff(void *xfd) 1277 { 1278 int s; 1279 fd_p fd = xfd; 1280 1281 TRACE1("[fd%d: turnoff]", fd->fdu); 1282 1283 s = splbio(); 1284 /* 1285 * Don't turn off the motor yet if the drive is active. 1286 * 1287 * If we got here, this could only mean we missed an interrupt. 1288 * This can e. g. happen on the Y-E Date PCMCIA floppy controller 1289 * after a controller reset. Just schedule a pseudo-interrupt 1290 * so the state machine gets re-entered. 1291 */ 1292 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) { 1293 fdc_intr(fd->fdc); 1294 splx(s); 1295 return; 1296 } 1297 1298 fd->flags &= ~FD_MOTOR; 1299 set_motor(fd->fdc, fd->fdsu, TURNOFF); 1300 splx(s); 1301 } 1302 1303 static void 1304 fd_motor_on(void *xfd) 1305 { 1306 int s; 1307 fd_p fd = xfd; 1308 1309 s = splbio(); 1310 fd->flags &= ~FD_MOTOR_WAIT; 1311 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT)) 1312 { 1313 fdc_intr(fd->fdc); 1314 } 1315 splx(s); 1316 } 1317 1318 static void 1319 fd_turnon(fd_p fd) 1320 { 1321 if(!(fd->flags & FD_MOTOR)) 1322 { 1323 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT); 1324 set_motor(fd->fdc, fd->fdsu, TURNON); 1325 timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */ 1326 } 1327 } 1328 1329 static void 1330 fdc_reset(fdc_p fdc) 1331 { 1332 /* Try a reset, keep motor on */ 1333 fdout_wr(fdc, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1334 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1335 DELAY(100); 1336 /* enable FDC, but defer interrupts a moment */ 1337 fdout_wr(fdc, fdc->fdout & ~FDO_FDMAEN); 1338 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN); 1339 DELAY(100); 1340 fdout_wr(fdc, fdc->fdout); 1341 TRACE1("[0x%x->FDOUT]", fdc->fdout); 1342 1343 /* XXX after a reset, silently believe the FDC will accept commands */ 1344 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1345 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1346 0); 1347 if (fdc->flags & FDC_HAS_FIFO) 1348 (void) enable_fifo(fdc); 1349 } 1350 1351 /****************************************************************************/ 1352 /* fdc in/out */ 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 fdblk = 128 << (fd->ft->secsize); 1523 if (bp->bio_cmd != BIO_FORMAT && bp->bio_cmd != BIO_RDSECTID) { 1524 if (bp->bio_blkno < 0) { 1525 printf( 1526 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n", 1527 fdu, (u_long)bp->bio_blkno, bp->bio_bcount); 1528 bp->bio_error = EINVAL; 1529 bp->bio_flags |= BIO_ERROR; 1530 goto bad; 1531 } 1532 if ((bp->bio_bcount % fdblk) != 0) { 1533 bp->bio_error = EINVAL; 1534 bp->bio_flags |= BIO_ERROR; 1535 goto bad; 1536 } 1537 } 1538 1539 /* 1540 * Set up block calculations. 1541 */ 1542 if (bp->bio_blkno > 20000000) { 1543 /* 1544 * Reject unreasonably high block number, prevent the 1545 * multiplication below from overflowing. 1546 */ 1547 bp->bio_error = EINVAL; 1548 bp->bio_flags |= BIO_ERROR; 1549 goto bad; 1550 } 1551 blknum = (unsigned) bp->bio_blkno * DEV_BSIZE/fdblk; 1552 nblocks = fd->ft->size; 1553 bp->bio_resid = 0; 1554 if (blknum + (bp->bio_bcount / fdblk) > nblocks) { 1555 if (blknum <= nblocks) { 1556 cando = (nblocks - blknum) * fdblk; 1557 bp->bio_resid = bp->bio_bcount - cando; 1558 if (cando == 0) 1559 goto bad; /* not actually bad but EOF */ 1560 } else { 1561 bp->bio_error = EINVAL; 1562 bp->bio_flags |= BIO_ERROR; 1563 goto bad; 1564 } 1565 } 1566 bp->bio_pblkno = bp->bio_blkno; 1567 s = splbio(); 1568 bioqdisksort(&fdc->head, bp); 1569 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */ 1570 devstat_start_transaction(&fd->device_stats); 1571 device_busy(fd->dev); 1572 fdstart(fdc); 1573 splx(s); 1574 return; 1575 1576 bad: 1577 biodone(bp); 1578 } 1579 1580 /***************************************************************\ 1581 * fdstart * 1582 * We have just queued something.. if the controller is not busy * 1583 * then simulate the case where it has just finished a command * 1584 * So that it (the interrupt routine) looks on the queue for more* 1585 * work to do and picks up what we just added. * 1586 * If the controller is already busy, we need do nothing, as it * 1587 * will pick up our work when the present work completes * 1588 \***************************************************************/ 1589 static void 1590 fdstart(struct fdc_data *fdc) 1591 { 1592 int s; 1593 1594 s = splbio(); 1595 if(fdc->state == DEVIDLE) 1596 { 1597 fdc_intr(fdc); 1598 } 1599 splx(s); 1600 } 1601 1602 static void 1603 fd_iotimeout(void *xfdc) 1604 { 1605 fdc_p fdc; 1606 int s; 1607 1608 fdc = xfdc; 1609 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); 1610 1611 /* 1612 * Due to IBM's brain-dead design, the FDC has a faked ready 1613 * signal, hardwired to ready == true. Thus, any command 1614 * issued if there's no diskette in the drive will _never_ 1615 * complete, and must be aborted by resetting the FDC. 1616 * Many thanks, Big Blue! 1617 * The FDC must not be reset directly, since that would 1618 * interfere with the state machine. Instead, pretend that 1619 * the command completed but was invalid. The state machine 1620 * will reset the FDC and retry once. 1621 */ 1622 s = splbio(); 1623 fdc->status[0] = NE7_ST0_IC_IV; 1624 fdc->flags &= ~FDC_STAT_VALID; 1625 fdc->state = IOTIMEDOUT; 1626 fdc_intr(fdc); 1627 splx(s); 1628 } 1629 1630 /* just ensure it has the right spl */ 1631 static void 1632 fd_pseudointr(void *xfdc) 1633 { 1634 int s; 1635 1636 s = splbio(); 1637 fdc_intr(xfdc); 1638 splx(s); 1639 } 1640 1641 /***********************************************************************\ 1642 * fdc_intr * 1643 * keep calling the state machine until it returns a 0 * 1644 * ALWAYS called at SPLBIO * 1645 \***********************************************************************/ 1646 static void 1647 fdc_intr(void *xfdc) 1648 { 1649 fdc_p fdc = xfdc; 1650 while(fdstate(fdc)) 1651 ; 1652 } 1653 1654 /* 1655 * magic pseudo-DMA initialization for YE FDC. Sets count and 1656 * direction 1657 */ 1658 #define SET_BCDR(fdc,wr,cnt,port) \ 1659 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port, \ 1660 ((cnt)-1) & 0xff); \ 1661 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port + 1, \ 1662 ((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))); 1663 1664 /* 1665 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy 1666 */ 1667 static int 1668 fdcpio(fdc_p fdc, long flags, caddr_t addr, u_int count) 1669 { 1670 u_char *cptr = (u_char *)addr; 1671 1672 if (flags == BIO_READ) { 1673 if (fdc->state != PIOREAD) { 1674 fdc->state = PIOREAD; 1675 return(0); 1676 } 1677 SET_BCDR(fdc, 0, count, 0); 1678 bus_space_read_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1679 FDC_YE_DATAPORT, cptr, count); 1680 } else { 1681 bus_space_write_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1682 FDC_YE_DATAPORT, cptr, count); 1683 SET_BCDR(fdc, 0, count, 0); 1684 } 1685 return(1); 1686 } 1687 1688 /***********************************************************************\ 1689 * The controller state machine. * 1690 * if it returns a non zero value, it should be called again immediatly * 1691 \***********************************************************************/ 1692 static int 1693 fdstate(fdc_p fdc) 1694 { 1695 int read, format, rdsectid, head, i, sec = 0, sectrac, st0, cyl, st3, idf; 1696 unsigned blknum = 0, b_cylinder = 0; 1697 struct fdc_readid *idp; 1698 fdu_t fdu = fdc->fdu; 1699 fd_p fd; 1700 register struct bio *bp; 1701 struct fd_formb *finfo = NULL; 1702 size_t fdblk; 1703 1704 bp = fdc->bp; 1705 if (bp == NULL) { 1706 bp = bioq_first(&fdc->head); 1707 if (bp != NULL) { 1708 bioq_remove(&fdc->head, bp); 1709 fdc->bp = bp; 1710 } 1711 } 1712 if (bp == NULL) { 1713 /***********************************************\ 1714 * nothing left for this controller to do * 1715 * Force into the IDLE state, * 1716 \***********************************************/ 1717 fdc->state = DEVIDLE; 1718 if (fdc->fd) { 1719 device_printf(fdc->fdc_dev, 1720 "unexpected valid fd pointer\n"); 1721 fdc->fd = (fd_p) 0; 1722 fdc->fdu = -1; 1723 } 1724 TRACE1("[fdc%d IDLE]", fdc->fdcu); 1725 return (0); 1726 } 1727 fdu = FDUNIT(minor(bp->bio_dev)); 1728 fd = devclass_get_softc(fd_devclass, fdu); 1729 fdblk = 128 << fd->ft->secsize; 1730 if (fdc->fd && (fd != fdc->fd)) 1731 device_printf(fd->dev, "confused fd pointers\n"); 1732 read = bp->bio_cmd == BIO_READ; 1733 if (read) 1734 idf = ISADMA_READ; 1735 else 1736 idf = ISADMA_WRITE; 1737 format = bp->bio_cmd == BIO_FORMAT; 1738 rdsectid = bp->bio_cmd == BIO_RDSECTID; 1739 if (format) { 1740 finfo = (struct fd_formb *)bp->bio_data; 1741 fd->skip = (char *)&(finfo->fd_formb_cylno(0)) 1742 - (char *)finfo; 1743 } 1744 if (fdc->state == DOSEEK || fdc->state == SEEKCOMPLETE) { 1745 blknum = (unsigned) bp->bio_pblkno * DEV_BSIZE/fdblk + 1746 fd->skip/fdblk; 1747 b_cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 1748 } 1749 TRACE1("fd%d", fdu); 1750 TRACE1("[%s]", fdstates[fdc->state]); 1751 TRACE1("(0x%x)", fd->flags); 1752 untimeout(fd_turnoff, fd, fd->toffhandle); 1753 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 1754 switch (fdc->state) 1755 { 1756 case DEVIDLE: 1757 case FINDWORK: /* we have found new work */ 1758 fdc->retry = 0; 1759 fd->skip = 0; 1760 fdc->fd = fd; 1761 fdc->fdu = fdu; 1762 fdc->fdctl_wr(fdc, fd->ft->trans); 1763 TRACE1("[0x%x->FDCTL]", fd->ft->trans); 1764 /*******************************************************\ 1765 * If the next drive has a motor startup pending, then * 1766 * it will start up in its own good time * 1767 \*******************************************************/ 1768 if(fd->flags & FD_MOTOR_WAIT) { 1769 fdc->state = MOTORWAIT; 1770 return (0); /* come back later */ 1771 } 1772 /*******************************************************\ 1773 * Maybe if it's not starting, it SHOULD be starting * 1774 \*******************************************************/ 1775 if (!(fd->flags & FD_MOTOR)) 1776 { 1777 fdc->state = MOTORWAIT; 1778 fd_turnon(fd); 1779 return (0); 1780 } 1781 else /* at least make sure we are selected */ 1782 { 1783 set_motor(fdc, fd->fdsu, TURNON); 1784 } 1785 if (fdc->flags & FDC_NEEDS_RESET) { 1786 fdc->state = RESETCTLR; 1787 fdc->flags &= ~FDC_NEEDS_RESET; 1788 } else 1789 fdc->state = DOSEEK; 1790 break; 1791 case DOSEEK: 1792 if (b_cylinder == (unsigned)fd->track) 1793 { 1794 fdc->state = SEEKCOMPLETE; 1795 break; 1796 } 1797 if (fd_cmd(fdc, 3, NE7CMD_SEEK, 1798 fd->fdsu, b_cylinder * fd->ft->steptrac, 1799 0)) 1800 { 1801 /* 1802 * seek command not accepted, looks like 1803 * the FDC went off to the Saints... 1804 */ 1805 fdc->retry = 6; /* try a reset */ 1806 return(retrier(fdc)); 1807 } 1808 fd->track = FD_NO_TRACK; 1809 fdc->state = SEEKWAIT; 1810 return(0); /* will return later */ 1811 case SEEKWAIT: 1812 /* allow heads to settle */ 1813 timeout(fd_pseudointr, fdc, hz / 16); 1814 fdc->state = SEEKCOMPLETE; 1815 return(0); /* will return later */ 1816 case SEEKCOMPLETE : /* SEEK DONE, START DMA */ 1817 /* Make sure seek really happened*/ 1818 if(fd->track == FD_NO_TRACK) { 1819 int descyl = b_cylinder * fd->ft->steptrac; 1820 do { 1821 /* 1822 * This might be a "ready changed" interrupt, 1823 * which cannot really happen since the 1824 * RDY pin is hardwired to + 5 volts. This 1825 * generally indicates a "bouncing" intr 1826 * line, so do one of the following: 1827 * 1828 * When running on an enhanced FDC that is 1829 * known to not go stuck after responding 1830 * with INVALID, fetch all interrupt states 1831 * until seeing either an INVALID or a 1832 * real interrupt condition. 1833 * 1834 * When running on a dumb old NE765, give 1835 * up immediately. The controller will 1836 * provide up to four dummy RC interrupt 1837 * conditions right after reset (for the 1838 * corresponding four drives), so this is 1839 * our only chance to get notice that it 1840 * was not the FDC that caused the interrupt. 1841 */ 1842 if (fd_sense_int(fdc, &st0, &cyl) 1843 == FD_NOT_VALID) 1844 return 0; 1845 if(fdc->fdct == FDC_NE765 1846 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 1847 return 0; /* hope for a real intr */ 1848 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 1849 1850 if (0 == descyl) { 1851 int failed = 0; 1852 /* 1853 * seek to cyl 0 requested; make sure we are 1854 * really there 1855 */ 1856 if (fd_sense_drive_status(fdc, &st3)) 1857 failed = 1; 1858 if ((st3 & NE7_ST3_T0) == 0) { 1859 printf( 1860 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", 1861 fdu, st3, NE7_ST3BITS); 1862 failed = 1; 1863 } 1864 1865 if (failed) { 1866 if(fdc->retry < 3) 1867 fdc->retry = 3; 1868 return (retrier(fdc)); 1869 } 1870 } 1871 1872 if (cyl != descyl) { 1873 printf( 1874 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", 1875 fdu, descyl, cyl, st0); 1876 if (fdc->retry < 3) 1877 fdc->retry = 3; 1878 return (retrier(fdc)); 1879 } 1880 } 1881 1882 fd->track = b_cylinder; 1883 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 1884 isa_dmastart(idf, bp->bio_data+fd->skip, 1885 format ? bp->bio_bcount : fdblk, fdc->dmachan); 1886 sectrac = fd->ft->sectrac; 1887 sec = blknum % (sectrac * fd->ft->heads); 1888 head = sec / sectrac; 1889 sec = sec % sectrac + 1; 1890 fd->hddrv = ((head&1)<<2)+fdu; 1891 1892 if(format || !(read || rdsectid)) 1893 { 1894 /* make sure the drive is writable */ 1895 if(fd_sense_drive_status(fdc, &st3) != 0) 1896 { 1897 /* stuck controller? */ 1898 if (!(fdc->flags & FDC_NODMA)) 1899 isa_dmadone(idf, 1900 bp->bio_data + fd->skip, 1901 format ? bp->bio_bcount : fdblk, 1902 fdc->dmachan); 1903 fdc->retry = 6; /* reset the beast */ 1904 return (retrier(fdc)); 1905 } 1906 if(st3 & NE7_ST3_WP) 1907 { 1908 /* 1909 * XXX YES! this is ugly. 1910 * in order to force the current operation 1911 * to fail, we will have to fake an FDC 1912 * error - all error handling is done 1913 * by the retrier() 1914 */ 1915 fdc->status[0] = NE7_ST0_IC_AT; 1916 fdc->status[1] = NE7_ST1_NW; 1917 fdc->status[2] = 0; 1918 fdc->status[3] = fd->track; 1919 fdc->status[4] = head; 1920 fdc->status[5] = sec; 1921 fdc->retry = 8; /* break out immediately */ 1922 fdc->state = IOTIMEDOUT; /* not really... */ 1923 return (1); 1924 } 1925 } 1926 1927 if (format) { 1928 if (fdc->flags & FDC_NODMA) { 1929 /* 1930 * This seems to be necessary for 1931 * whatever obscure reason; if we omit 1932 * it, we end up filling the sector ID 1933 * fields of the newly formatted track 1934 * entirely with garbage, causing 1935 * `wrong cylinder' errors all over 1936 * the place when trying to read them 1937 * back. 1938 * 1939 * Umpf. 1940 */ 1941 SET_BCDR(fdc, 1, bp->bio_bcount, 0); 1942 1943 (void)fdcpio(fdc,bp->bio_cmd, 1944 bp->bio_data+fd->skip, 1945 bp->bio_bcount); 1946 1947 } 1948 /* formatting */ 1949 if(fd_cmd(fdc, 6, NE7CMD_FORMAT, head << 2 | fdu, 1950 finfo->fd_formb_secshift, 1951 finfo->fd_formb_nsecs, 1952 finfo->fd_formb_gaplen, 1953 finfo->fd_formb_fillbyte, 0)) { 1954 /* controller fell over */ 1955 if (!(fdc->flags & FDC_NODMA)) 1956 isa_dmadone(idf, 1957 bp->bio_data + fd->skip, 1958 format ? bp->bio_bcount : fdblk, 1959 fdc->dmachan); 1960 fdc->retry = 6; 1961 return (retrier(fdc)); 1962 } 1963 } else if (rdsectid) { 1964 if (fd_cmd(fdc, 2, NE7CMD_READID, head << 2 | fdu, 0)) { 1965 /* controller jamming */ 1966 fdc->retry = 6; 1967 return (retrier(fdc)); 1968 } 1969 } else { 1970 /* read or write operation */ 1971 if (fdc->flags & FDC_NODMA) { 1972 /* 1973 * this seems to be necessary even when 1974 * reading data 1975 */ 1976 SET_BCDR(fdc, 1, fdblk, 0); 1977 1978 /* 1979 * perform the write pseudo-DMA before 1980 * the WRITE command is sent 1981 */ 1982 if (!read) 1983 (void)fdcpio(fdc,bp->bio_cmd, 1984 bp->bio_data+fd->skip, 1985 fdblk); 1986 } 1987 if (fd_cmd(fdc, 9, 1988 (read ? NE7CMD_READ : NE7CMD_WRITE), 1989 head << 2 | fdu, /* head & unit */ 1990 fd->track, /* track */ 1991 head, 1992 sec, /* sector + 1 */ 1993 fd->ft->secsize, /* sector size */ 1994 sectrac, /* sectors/track */ 1995 fd->ft->gap, /* gap size */ 1996 fd->ft->datalen, /* data length */ 1997 0)) { 1998 /* the beast is sleeping again */ 1999 if (!(fdc->flags & FDC_NODMA)) 2000 isa_dmadone(idf, 2001 bp->bio_data + fd->skip, 2002 format ? bp->bio_bcount : fdblk, 2003 fdc->dmachan); 2004 fdc->retry = 6; 2005 return (retrier(fdc)); 2006 } 2007 } 2008 if (!rdsectid && (fdc->flags & FDC_NODMA)) 2009 /* 2010 * if this is a read, then simply await interrupt 2011 * before performing PIO 2012 */ 2013 if (read && !fdcpio(fdc,bp->bio_cmd, 2014 bp->bio_data+fd->skip,fdblk)) { 2015 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 2016 return(0); /* will return later */ 2017 } 2018 2019 /* 2020 * write (or format) operation will fall through and 2021 * await completion interrupt 2022 */ 2023 fdc->state = IOCOMPLETE; 2024 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 2025 return (0); /* will return later */ 2026 case PIOREAD: 2027 /* 2028 * actually perform the PIO read. The IOCOMPLETE case 2029 * removes the timeout for us. 2030 */ 2031 (void)fdcpio(fdc,bp->bio_cmd,bp->bio_data+fd->skip,fdblk); 2032 fdc->state = IOCOMPLETE; 2033 /* FALLTHROUGH */ 2034 case IOCOMPLETE: /* IO DONE, post-analyze */ 2035 untimeout(fd_iotimeout, fdc, fd->tohandle); 2036 2037 if (fd_read_status(fdc)) { 2038 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 2039 isa_dmadone(idf, bp->bio_data + fd->skip, 2040 format ? bp->bio_bcount : fdblk, 2041 fdc->dmachan); 2042 if (fdc->retry < 6) 2043 fdc->retry = 6; /* force a reset */ 2044 return (retrier(fdc)); 2045 } 2046 2047 fdc->state = IOTIMEDOUT; 2048 2049 /* FALLTHROUGH */ 2050 2051 case IOTIMEDOUT: 2052 if (!rdsectid && !(fdc->flags & FDC_NODMA)) 2053 isa_dmadone(idf, bp->bio_data + fd->skip, 2054 format ? bp->bio_bcount : fdblk, fdc->dmachan); 2055 if (fdc->status[0] & NE7_ST0_IC) { 2056 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2057 && fdc->status[1] & NE7_ST1_OR) { 2058 /* 2059 * DMA overrun. Someone hogged the bus 2060 * and didn't release it in time for the 2061 * next FDC transfer. 2062 * Just restart it, don't increment retry 2063 * count. (vak) 2064 */ 2065 fdc->state = SEEKCOMPLETE; 2066 return (1); 2067 } 2068 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV 2069 && fdc->retry < 6) 2070 fdc->retry = 6; /* force a reset */ 2071 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2072 && fdc->status[2] & NE7_ST2_WC 2073 && fdc->retry < 3) 2074 fdc->retry = 3; /* force recalibrate */ 2075 return (retrier(fdc)); 2076 } 2077 /* All OK */ 2078 if (rdsectid) { 2079 /* copy out ID field contents */ 2080 idp = (struct fdc_readid *)bp->bio_data; 2081 idp->cyl = fdc->status[3]; 2082 idp->head = fdc->status[4]; 2083 idp->sec = fdc->status[5]; 2084 idp->secshift = fdc->status[6]; 2085 } 2086 fd->skip += fdblk; 2087 if (!rdsectid && !format && fd->skip < bp->bio_bcount - bp->bio_resid) { 2088 /* set up next transfer */ 2089 fdc->state = DOSEEK; 2090 } else { 2091 /* ALL DONE */ 2092 fd->skip = 0; 2093 fdc->bp = NULL; 2094 device_unbusy(fd->dev); 2095 biofinish(bp, &fd->device_stats, 0); 2096 fdc->fd = (fd_p) 0; 2097 fdc->fdu = -1; 2098 fdc->state = FINDWORK; 2099 } 2100 return (1); 2101 case RESETCTLR: 2102 fdc_reset(fdc); 2103 fdc->retry++; 2104 fdc->state = RESETCOMPLETE; 2105 return (0); 2106 case RESETCOMPLETE: 2107 /* 2108 * Discard all the results from the reset so that they 2109 * can't cause an unexpected interrupt later. 2110 */ 2111 for (i = 0; i < 4; i++) 2112 (void)fd_sense_int(fdc, &st0, &cyl); 2113 fdc->state = STARTRECAL; 2114 /* Fall through. */ 2115 case STARTRECAL: 2116 if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) { 2117 /* arrgl */ 2118 fdc->retry = 6; 2119 return (retrier(fdc)); 2120 } 2121 fdc->state = RECALWAIT; 2122 return (0); /* will return later */ 2123 case RECALWAIT: 2124 /* allow heads to settle */ 2125 timeout(fd_pseudointr, fdc, hz / 8); 2126 fdc->state = RECALCOMPLETE; 2127 return (0); /* will return later */ 2128 case RECALCOMPLETE: 2129 do { 2130 /* 2131 * See SEEKCOMPLETE for a comment on this: 2132 */ 2133 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 2134 return 0; 2135 if(fdc->fdct == FDC_NE765 2136 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 2137 return 0; /* hope for a real intr */ 2138 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 2139 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0) 2140 { 2141 if(fdc->retry > 3) 2142 /* 2143 * a recalibrate from beyond cylinder 77 2144 * will "fail" due to the FDC limitations; 2145 * since people used to complain much about 2146 * the failure message, try not logging 2147 * this one if it seems to be the first 2148 * time in a line 2149 */ 2150 printf("fd%d: recal failed ST0 %b cyl %d\n", 2151 fdu, st0, NE7_ST0BITS, cyl); 2152 if(fdc->retry < 3) fdc->retry = 3; 2153 return (retrier(fdc)); 2154 } 2155 fd->track = 0; 2156 /* Seek (probably) necessary */ 2157 fdc->state = DOSEEK; 2158 return (1); /* will return immediatly */ 2159 case MOTORWAIT: 2160 if(fd->flags & FD_MOTOR_WAIT) 2161 { 2162 return (0); /* time's not up yet */ 2163 } 2164 if (fdc->flags & FDC_NEEDS_RESET) { 2165 fdc->state = RESETCTLR; 2166 fdc->flags &= ~FDC_NEEDS_RESET; 2167 } else { 2168 /* 2169 * If all motors were off, then the controller was 2170 * reset, so it has lost track of the current 2171 * cylinder. Recalibrate to handle this case. 2172 * But first, discard the results of the reset. 2173 */ 2174 fdc->state = RESETCOMPLETE; 2175 } 2176 return (1); /* will return immediatly */ 2177 default: 2178 device_printf(fdc->fdc_dev, "unexpected FD int->"); 2179 if (fd_read_status(fdc) == 0) 2180 printf("FDC status :%x %x %x %x %x %x %x ", 2181 fdc->status[0], 2182 fdc->status[1], 2183 fdc->status[2], 2184 fdc->status[3], 2185 fdc->status[4], 2186 fdc->status[5], 2187 fdc->status[6] ); 2188 else 2189 printf("No status available "); 2190 if (fd_sense_int(fdc, &st0, &cyl) != 0) 2191 { 2192 printf("[controller is dead now]\n"); 2193 return (0); 2194 } 2195 printf("ST0 = %x, PCN = %x\n", st0, cyl); 2196 return (0); 2197 } 2198 /*XXX confusing: some branches return immediately, others end up here*/ 2199 return (1); /* Come back immediatly to new state */ 2200 } 2201 2202 static int 2203 retrier(struct fdc_data *fdc) 2204 { 2205 struct bio *bp; 2206 struct fd_data *fd; 2207 int fdu; 2208 2209 bp = fdc->bp; 2210 2211 /* XXX shouldn't this be cached somewhere? */ 2212 fdu = FDUNIT(minor(bp->bio_dev)); 2213 fd = devclass_get_softc(fd_devclass, fdu); 2214 if (fd->options & FDOPT_NORETRY) 2215 goto fail; 2216 2217 switch (fdc->retry) { 2218 case 0: case 1: case 2: 2219 fdc->state = SEEKCOMPLETE; 2220 break; 2221 case 3: case 4: case 5: 2222 fdc->state = STARTRECAL; 2223 break; 2224 case 6: 2225 fdc->state = RESETCTLR; 2226 break; 2227 case 7: 2228 break; 2229 default: 2230 fail: 2231 { 2232 int printerror = (fd->options & FDOPT_NOERRLOG) == 0; 2233 2234 if (printerror) 2235 diskerr(bp, "hard error", 2236 fdc->fd->skip / DEV_BSIZE, 2237 (struct disklabel *)NULL); 2238 if (printerror) { 2239 if (fdc->flags & FDC_STAT_VALID) 2240 { 2241 printf( 2242 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n", 2243 fdc->status[0], NE7_ST0BITS, 2244 fdc->status[1], NE7_ST1BITS, 2245 fdc->status[2], NE7_ST2BITS, 2246 fdc->status[3], fdc->status[4], 2247 fdc->status[5]); 2248 } 2249 else 2250 printf(" (No status)\n"); 2251 } 2252 } 2253 if ((fd->options & FDOPT_NOERROR) == 0) { 2254 bp->bio_flags |= BIO_ERROR; 2255 bp->bio_error = EIO; 2256 bp->bio_resid += bp->bio_bcount - fdc->fd->skip; 2257 } 2258 fdc->bp = NULL; 2259 fdc->fd->skip = 0; 2260 device_unbusy(fd->dev); 2261 biofinish(bp, &fdc->fd->device_stats, 0); 2262 fdc->state = FINDWORK; 2263 fdc->flags |= FDC_NEEDS_RESET; 2264 fdc->fd = (fd_p) 0; 2265 fdc->fdu = -1; 2266 return (1); 2267 } 2268 fdc->retry++; 2269 return (1); 2270 } 2271 2272 static void 2273 fdbiodone(struct bio *bp) 2274 { 2275 wakeup(bp); 2276 } 2277 2278 static int 2279 fdmisccmd(dev_t dev, u_int cmd, void *data) 2280 { 2281 fdu_t fdu; 2282 fd_p fd; 2283 struct bio *bp; 2284 struct fd_formb *finfo; 2285 struct fdc_readid *idfield; 2286 size_t fdblk; 2287 2288 fdu = FDUNIT(minor(dev)); 2289 fd = devclass_get_softc(fd_devclass, fdu); 2290 fdblk = 128 << fd->ft->secsize; 2291 finfo = (struct fd_formb *)data; 2292 idfield = (struct fdc_readid *)data; 2293 2294 bp = malloc(sizeof(struct bio), M_TEMP, M_ZERO | M_NOWAIT); 2295 if (bp == 0) 2296 return (ENOMEM); 2297 2298 /* 2299 * Set up a bio request for fdstrategy(). bio_blkno is faked 2300 * so that fdstrategy() will seek to the the requested 2301 * cylinder, and use the desired head. Since we are not 2302 * interested in bioqdisksort() munging with our faked bio 2303 * request, we mark it as being an ordered request. 2304 */ 2305 bp->bio_cmd = cmd; 2306 if (cmd == BIO_FORMAT) { 2307 bp->bio_blkno = 2308 (finfo->cyl * (fd->ft->sectrac * fd->ft->heads) + 2309 finfo->head * fd->ft->sectrac) * 2310 fdblk / DEV_BSIZE; 2311 bp->bio_bcount = sizeof(struct fd_idfield_data) * 2312 finfo->fd_formb_nsecs; 2313 } else if (cmd == BIO_RDSECTID) { 2314 bp->bio_blkno = 2315 (idfield->cyl * (fd->ft->sectrac * fd->ft->heads) + 2316 idfield->head * fd->ft->sectrac) * 2317 fdblk / DEV_BSIZE; 2318 bp->bio_bcount = sizeof(struct fdc_readid); 2319 } else 2320 panic("wrong cmd in fdmisccmd()"); 2321 bp->bio_data = data; 2322 bp->bio_dev = dev; 2323 bp->bio_done = fdbiodone; 2324 bp->bio_flags = BIO_ORDERED; 2325 2326 /* 2327 * Now run the cmd. The wait loop is a version of bufwait() 2328 * adapted for struct bio instead of struct buf and 2329 * specialized for the current context. 2330 */ 2331 fdstrategy(bp); 2332 while((bp->bio_flags & BIO_DONE) == 0) 2333 tsleep(bp, PRIBIO, "fdcmd", 0); 2334 2335 free(bp, M_TEMP); 2336 return (bp->bio_flags & BIO_ERROR ? bp->bio_error : 0); 2337 } 2338 2339 static int 2340 fdioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p) 2341 { 2342 fdu_t fdu; 2343 fd_p fd; 2344 struct fd_type *fdt; 2345 struct disklabel *dl; 2346 struct fdc_status *fsp; 2347 struct fdc_readid *rid; 2348 char *buffer; 2349 size_t fdblk; 2350 int error = 0; 2351 2352 fdu = FDUNIT(minor(dev)); 2353 fd = devclass_get_softc(fd_devclass, fdu); 2354 fdblk = 128 << fd->ft->secsize; 2355 2356 switch (cmd) { 2357 case DIOCGDINFO: 2358 buffer = malloc(DEV_BSIZE, M_TEMP, M_ZERO | M_NOWAIT); 2359 if (buffer == 0) { 2360 error = ENOMEM; 2361 break; 2362 } 2363 dl = (struct disklabel *)buffer; 2364 dl->d_secsize = fdblk; 2365 fdt = fd->ft; 2366 dl->d_secpercyl = fdt->size / fdt->tracks; 2367 dl->d_type = DTYPE_FLOPPY; 2368 2369 if (readdisklabel(dkmodpart(dev, RAW_PART), dl) 2370 == NULL) 2371 error = 0; 2372 else 2373 error = EINVAL; 2374 2375 *(struct disklabel *)addr = *dl; 2376 free(buffer, M_TEMP); 2377 break; 2378 2379 case DIOCSDINFO: 2380 if ((flag & FWRITE) == 0) 2381 error = EBADF; 2382 break; 2383 2384 case DIOCWLABEL: 2385 if ((flag & FWRITE) == 0) 2386 error = EBADF; 2387 break; 2388 2389 case DIOCWDINFO: 2390 if ((flag & FWRITE) == 0) { 2391 error = EBADF; 2392 break; 2393 } 2394 2395 dl = (struct disklabel *)addr; 2396 2397 buffer = malloc(DEV_BSIZE, M_TEMP, M_ZERO | M_NOWAIT); 2398 if (buffer == 0) { 2399 error = ENOMEM; 2400 break; 2401 } 2402 if ((error = setdisklabel((struct disklabel *)buffer, dl, 2403 (u_long)0)) != 0) 2404 break; 2405 2406 error = writedisklabel(dev, (struct disklabel *)buffer); 2407 free(buffer, M_TEMP); 2408 break; 2409 2410 case FD_FORM: 2411 if ((flag & FWRITE) == 0) 2412 error = EBADF; /* must be opened for writing */ 2413 else if (((struct fd_formb *)addr)->format_version != 2414 FD_FORMAT_VERSION) 2415 error = EINVAL; /* wrong version of formatting prog */ 2416 else 2417 error = fdmisccmd(dev, BIO_FORMAT, addr); 2418 break; 2419 2420 case FD_GTYPE: /* get drive type */ 2421 *(struct fd_type *)addr = *fd->ft; 2422 break; 2423 2424 case FD_STYPE: /* set drive type */ 2425 /* this is considered harmful; only allow for superuser */ 2426 if (suser(p) != 0) 2427 return EPERM; 2428 *fd->ft = *(struct fd_type *)addr; 2429 break; 2430 2431 case FD_GOPTS: /* get drive options */ 2432 *(int *)addr = fd->options; 2433 break; 2434 2435 case FD_SOPTS: /* set drive options */ 2436 fd->options = *(int *)addr; 2437 break; 2438 2439 #ifdef FDC_DEBUG 2440 case FD_DEBUG: 2441 fd_debug = *(int *)addr; 2442 break; 2443 #endif 2444 2445 case FD_CLRERR: 2446 if (suser(p) != 0) 2447 return EPERM; 2448 fd->fdc->fdc_errs = 0; 2449 break; 2450 2451 case FD_GSTAT: 2452 fsp = (struct fdc_status *)addr; 2453 if ((fd->fdc->flags & FDC_STAT_VALID) == 0) 2454 return EINVAL; 2455 memcpy(fsp->status, fd->fdc->status, 7 * sizeof(u_int)); 2456 break; 2457 2458 case FD_READID: 2459 rid = (struct fdc_readid *)addr; 2460 if (rid->cyl > MAX_CYLINDER || rid->head > MAX_HEAD) 2461 return EINVAL; 2462 error = fdmisccmd(dev, BIO_RDSECTID, addr); 2463 break; 2464 2465 default: 2466 error = ENOTTY; 2467 break; 2468 } 2469 return (error); 2470 } 2471