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