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/kernel.h> 60 #include <sys/bio.h> 61 #include <sys/bus.h> 62 #include <sys/conf.h> 63 #include <sys/disklabel.h> 64 #include <sys/devicestat.h> 65 #include <sys/fcntl.h> 66 #include <sys/malloc.h> 67 #include <sys/module.h> 68 #include <sys/proc.h> 69 #include <sys/syslog.h> 70 71 #include <sys/bus.h> 72 #include <machine/bus.h> 73 #include <sys/rman.h> 74 75 #include <machine/clock.h> 76 #include <machine/ioctl_fd.h> 77 #include <machine/resource.h> 78 #include <machine/stdarg.h> 79 80 #include <isa/isavar.h> 81 #include <isa/isareg.h> 82 #include <isa/fdreg.h> 83 #include <isa/fdc.h> 84 #include <isa/rtc.h> 85 86 /* misuse a flag to identify format operation */ 87 88 /* configuration flags */ 89 #define FDC_PRETEND_D0 (1 << 0) /* pretend drive 0 to be there */ 90 #define FDC_NO_FIFO (1 << 2) /* do not enable FIFO */ 91 92 /* internally used only, not really from CMOS: */ 93 #define RTCFDT_144M_PRETENDED 0x1000 94 95 /* error returns for fd_cmd() */ 96 #define FD_FAILED -1 97 #define FD_NOT_VALID -2 98 #define FDC_ERRMAX 100 /* do not log more */ 99 100 #define NUMTYPES 17 101 #define NUMDENS (NUMTYPES - 7) 102 103 /* These defines (-1) must match index for fd_types */ 104 #define F_TAPE_TYPE 0x020 /* bit for fd_types to indicate tape */ 105 #define NO_TYPE 0 /* must match NO_TYPE in ft.c */ 106 #define FD_1720 1 107 #define FD_1480 2 108 #define FD_1440 3 109 #define FD_1200 4 110 #define FD_820 5 111 #define FD_800 6 112 #define FD_720 7 113 #define FD_360 8 114 #define FD_640 9 115 #define FD_1232 10 116 117 #define FD_1480in5_25 11 118 #define FD_1440in5_25 12 119 #define FD_820in5_25 13 120 #define FD_800in5_25 14 121 #define FD_720in5_25 15 122 #define FD_360in5_25 16 123 #define FD_640in5_25 17 124 125 126 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 /***********************************************************************\ 151 * Per controller structure. * 152 \***********************************************************************/ 153 static devclass_t fdc_devclass; 154 155 /***********************************************************************\ 156 * Per drive structure. * 157 * N per controller (DRVS_PER_CTLR) * 158 \***********************************************************************/ 159 struct fd_data { 160 struct fdc_data *fdc; /* pointer to controller structure */ 161 int fdsu; /* this units number on this controller */ 162 int type; /* Drive type (FD_1440...) */ 163 struct fd_type *ft; /* pointer to the type descriptor */ 164 int flags; 165 #define FD_OPEN 0x01 /* it's open */ 166 #define FD_ACTIVE 0x02 /* it's active */ 167 #define FD_MOTOR 0x04 /* motor should be on */ 168 #define FD_MOTOR_WAIT 0x08 /* motor coming up */ 169 int skip; 170 int hddrv; 171 #define FD_NO_TRACK -2 172 int track; /* where we think the head is */ 173 int options; /* user configurable options, see ioctl_fd.h */ 174 struct callout_handle toffhandle; 175 struct callout_handle tohandle; 176 struct devstat device_stats; 177 device_t dev; 178 fdu_t fdu; 179 }; 180 181 struct fdc_ivars { 182 int fdunit; 183 }; 184 static devclass_t fd_devclass; 185 186 /***********************************************************************\ 187 * Throughout this file the following conventions will be used: * 188 * fd is a pointer to the fd_data struct for the drive in question * 189 * fdc is a pointer to the fdc_data struct for the controller * 190 * fdu is the floppy drive unit number * 191 * fdcu is the floppy controller unit number * 192 * fdsu is the floppy drive unit number on that controller. (sub-unit) * 193 \***********************************************************************/ 194 195 /* needed for ft driver, thus exported */ 196 int in_fdc(struct fdc_data *); 197 int out_fdc(struct fdc_data *, int); 198 199 /* internal functions */ 200 static void fdc_intr(void *); 201 static void set_motor(struct fdc_data *, int, int); 202 # define TURNON 1 203 # define TURNOFF 0 204 static timeout_t fd_turnoff; 205 static timeout_t fd_motor_on; 206 static void fd_turnon(struct fd_data *); 207 static void fdc_reset(fdc_p); 208 static int fd_in(struct fdc_data *, int *); 209 static void fdstart(struct fdc_data *); 210 static timeout_t fd_iotimeout; 211 static timeout_t fd_pseudointr; 212 static int fdstate(struct fdc_data *); 213 static int retrier(struct fdc_data *); 214 static int fdformat(dev_t, struct fd_formb *, struct proc *); 215 216 static int enable_fifo(fdc_p fdc); 217 218 static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */ 219 220 221 #define DEVIDLE 0 222 #define FINDWORK 1 223 #define DOSEEK 2 224 #define SEEKCOMPLETE 3 225 #define IOCOMPLETE 4 226 #define RECALCOMPLETE 5 227 #define STARTRECAL 6 228 #define RESETCTLR 7 229 #define SEEKWAIT 8 230 #define RECALWAIT 9 231 #define MOTORWAIT 10 232 #define IOTIMEDOUT 11 233 #define RESETCOMPLETE 12 234 #define PIOREAD 13 235 236 #ifdef FDC_DEBUG 237 static char const * const fdstates[] = 238 { 239 "DEVIDLE", 240 "FINDWORK", 241 "DOSEEK", 242 "SEEKCOMPLETE", 243 "IOCOMPLETE", 244 "RECALCOMPLETE", 245 "STARTRECAL", 246 "RESETCTLR", 247 "SEEKWAIT", 248 "RECALWAIT", 249 "MOTORWAIT", 250 "IOTIMEDOUT", 251 "RESETCOMPLETE", 252 "PIOREAD", 253 }; 254 255 /* CAUTION: fd_debug causes huge amounts of logging output */ 256 static int volatile fd_debug = 0; 257 #define TRACE0(arg) if(fd_debug) printf(arg) 258 #define TRACE1(arg1, arg2) if(fd_debug) printf(arg1, arg2) 259 #else /* FDC_DEBUG */ 260 #define TRACE0(arg) 261 #define TRACE1(arg1, arg2) 262 #endif /* FDC_DEBUG */ 263 264 static void 265 fdout_wr(fdc_p fdc, u_int8_t v) 266 { 267 bus_space_write_1(fdc->portt, fdc->porth, FDOUT+fdc->port_off, v); 268 } 269 270 static u_int8_t 271 fdsts_rd(fdc_p fdc) 272 { 273 return bus_space_read_1(fdc->portt, fdc->porth, FDSTS+fdc->port_off); 274 } 275 276 static void 277 fddata_wr(fdc_p fdc, u_int8_t v) 278 { 279 bus_space_write_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off, v); 280 } 281 282 static u_int8_t 283 fddata_rd(fdc_p fdc) 284 { 285 return bus_space_read_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off); 286 } 287 288 static void 289 fdctl_wr_isa(fdc_p fdc, u_int8_t v) 290 { 291 bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v); 292 } 293 294 #if NCARD > 0 295 static void 296 fdctl_wr_pcmcia(fdc_p fdc, u_int8_t v) 297 { 298 bus_space_write_1(fdc->portt, fdc->porth, FDCTL+fdc->port_off, v); 299 } 300 #endif 301 302 #if 0 303 304 static u_int8_t 305 fdin_rd(fdc_p fdc) 306 { 307 return bus_space_read_1(fdc->portt, fdc->porth, FDIN); 308 } 309 310 #endif 311 312 static d_open_t Fdopen; /* NOTE, not fdopen */ 313 static d_close_t fdclose; 314 static d_ioctl_t fdioctl; 315 static d_strategy_t fdstrategy; 316 317 #define CDEV_MAJOR 9 318 #define BDEV_MAJOR 2 319 320 static struct cdevsw fd_cdevsw = { 321 /* open */ Fdopen, 322 /* close */ fdclose, 323 /* read */ physread, 324 /* write */ physwrite, 325 /* ioctl */ fdioctl, 326 /* poll */ nopoll, 327 /* mmap */ nommap, 328 /* strategy */ fdstrategy, 329 /* name */ "fd", 330 /* maj */ CDEV_MAJOR, 331 /* dump */ nodump, 332 /* psize */ nopsize, 333 /* flags */ D_DISK, 334 /* bmaj */ BDEV_MAJOR 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, fdc_intr, fdc, &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 /* Acquire the DMA channel forever, The driver will do the rest */ 859 /* XXX should integrate with rman */ 860 isa_dma_acquire(fdc->dmachan); 861 isa_dmainit(fdc->dmachan, 128 << 3 /* XXX max secsize */); 862 } 863 fdc->state = DEVIDLE; 864 865 /* reset controller, turn motor off, clear fdout mirror reg */ 866 fdout_wr(fdc, ((fdc->fdout = 0))); 867 bioq_init(&fdc->head); 868 869 /* 870 * Probe and attach any children. We should probably detect 871 * devices from the BIOS unless overridden. 872 */ 873 name = device_get_nameunit(dev); 874 i = -1; 875 while ((i = resource_query_string(i, "at", name)) != -1) 876 fdc_add_child(dev, resource_query_name(i), 877 resource_query_unit(i)); 878 879 return (bus_generic_attach(dev)); 880 } 881 882 static int 883 fdc_print_child(device_t me, device_t child) 884 { 885 int retval = 0; 886 887 retval += bus_print_child_header(me, child); 888 retval += printf(" on %s drive %d\n", device_get_nameunit(me), 889 fdc_get_fdunit(child)); 890 891 return (retval); 892 } 893 894 static device_method_t fdc_methods[] = { 895 /* Device interface */ 896 DEVMETHOD(device_probe, fdc_probe), 897 DEVMETHOD(device_attach, fdc_attach), 898 DEVMETHOD(device_detach, bus_generic_detach), 899 DEVMETHOD(device_shutdown, bus_generic_shutdown), 900 DEVMETHOD(device_suspend, bus_generic_suspend), 901 DEVMETHOD(device_resume, bus_generic_resume), 902 903 /* Bus interface */ 904 DEVMETHOD(bus_print_child, fdc_print_child), 905 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 906 /* Our children never use any other bus interface methods. */ 907 908 { 0, 0 } 909 }; 910 911 static driver_t fdc_driver = { 912 "fdc", 913 fdc_methods, 914 sizeof(struct fdc_data) 915 }; 916 917 DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0); 918 919 #if NCARD > 0 920 921 static device_method_t fdc_pccard_methods[] = { 922 /* Device interface */ 923 DEVMETHOD(device_probe, fdc_pccard_probe), 924 DEVMETHOD(device_attach, fdc_attach), 925 DEVMETHOD(device_detach, fdc_pccard_detach), 926 DEVMETHOD(device_shutdown, bus_generic_shutdown), 927 DEVMETHOD(device_suspend, bus_generic_suspend), 928 DEVMETHOD(device_resume, bus_generic_resume), 929 930 /* Bus interface */ 931 DEVMETHOD(bus_print_child, fdc_print_child), 932 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 933 /* Our children never use any other bus interface methods. */ 934 935 { 0, 0 } 936 }; 937 938 static driver_t fdc_pccard_driver = { 939 "fdc", 940 fdc_pccard_methods, 941 sizeof(struct fdc_data) 942 }; 943 944 DRIVER_MODULE(fdc, pccard, fdc_pccard_driver, fdc_devclass, 0, 0); 945 946 #endif /* NCARD > 0 */ 947 948 static void fd_clone __P((void *arg, char *name, int namelen, dev_t *dev)); 949 950 static struct { 951 char *match; 952 int minor; 953 int link; 954 } fd_suffix[] = { 955 { "a", 0, 1 }, 956 { "b", 0, 1 }, 957 { "c", 0, 1 }, 958 { "d", 0, 1 }, 959 { "e", 0, 1 }, 960 { "f", 0, 1 }, 961 { "g", 0, 1 }, 962 { "h", 0, 1 }, 963 { ".1720", 1, 0 }, 964 { ".1480", 2, 0 }, 965 { ".1440", 3, 0 }, 966 { ".1200", 4, 0 }, 967 { ".820", 5, 0 }, 968 { ".800", 6, 0 }, 969 { ".720", 7, 0 }, 970 { ".360", 8, 0 }, 971 { ".640", 9, 0 }, 972 { ".1232", 10, 0 }, 973 { 0, 0 } 974 }; 975 static void 976 fd_clone(arg, name, namelen, dev) 977 void *arg; 978 char *name; 979 int namelen; 980 dev_t *dev; 981 { 982 int u, d, i; 983 char *n; 984 dev_t pdev; 985 986 if (*dev != NODEV) 987 return; 988 if (dev_stdclone(name, &n, "fd", &u) != 2) 989 return; 990 for (i = 0; ; i++) { 991 if (fd_suffix[i].match == NULL) 992 return; 993 if (strcmp(n, fd_suffix[i].match)) 994 continue; 995 d = fd_suffix[i].minor; 996 break; 997 } 998 if (fd_suffix[i].link == 0) { 999 *dev = make_dev(&fd_cdevsw, (u << 6) + d, 1000 UID_ROOT, GID_OPERATOR, 0640, name); 1001 } else { 1002 pdev = makedev(fd_cdevsw.d_maj, (u << 6) + d); 1003 *dev = make_dev_alias(pdev, name); 1004 } 1005 } 1006 1007 /******************************************************************/ 1008 /* 1009 * devices attached to the controller section. 1010 */ 1011 static int 1012 fd_probe(device_t dev) 1013 { 1014 int i; 1015 u_int fdt, st0, st3; 1016 struct fd_data *fd; 1017 struct fdc_data *fdc; 1018 fdsu_t fdsu; 1019 static int fd_fifo = 0; 1020 1021 fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */ 1022 fd = device_get_softc(dev); 1023 fdc = device_get_softc(device_get_parent(dev)); 1024 1025 bzero(fd, sizeof *fd); 1026 fd->dev = dev; 1027 fd->fdc = fdc; 1028 fd->fdsu = fdsu; 1029 fd->fdu = device_get_unit(dev); 1030 1031 #ifdef __i386__ 1032 /* look up what bios thinks we have */ 1033 switch (fd->fdu) { 1034 case 0: 1035 if ((fdc->flags & FDC_ISPCMCIA)) 1036 fdt = RTCFDT_144M; 1037 else if (device_get_flags(fdc->fdc_dev) & FDC_PRETEND_D0) 1038 fdt = RTCFDT_144M | RTCFDT_144M_PRETENDED; 1039 else 1040 fdt = (rtcin(RTC_FDISKETTE) & 0xf0); 1041 break; 1042 case 1: 1043 fdt = ((rtcin(RTC_FDISKETTE) << 4) & 0xf0); 1044 break; 1045 default: 1046 fdt = RTCFDT_NONE; 1047 break; 1048 } 1049 #else 1050 fdt = RTCFDT_144M; /* XXX probably */ 1051 #endif 1052 1053 /* is there a unit? */ 1054 if (fdt == RTCFDT_NONE) 1055 return (ENXIO); 1056 1057 /* select it */ 1058 set_motor(fdc, fdsu, TURNON); 1059 DELAY(1000000); /* 1 sec */ 1060 1061 /* XXX This doesn't work before the first set_motor() */ 1062 if (fd_fifo == 0 && fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN 1063 && (device_get_flags(fdc->fdc_dev) & FDC_NO_FIFO) == 0 1064 && enable_fifo(fdc) == 0) { 1065 device_printf(device_get_parent(dev), 1066 "FIFO enabled, %d bytes threshold\n", fifo_threshold); 1067 } 1068 fd_fifo = 1; 1069 1070 if ((fd_cmd(fdc, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) 1071 && (st3 & NE7_ST3_T0)) { 1072 /* if at track 0, first seek inwards */ 1073 /* seek some steps: */ 1074 fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0); 1075 DELAY(300000); /* ...wait a moment... */ 1076 fd_sense_int(fdc, 0, 0); /* make ctrlr happy */ 1077 } 1078 1079 /* If we're at track 0 first seek inwards. */ 1080 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) { 1081 /* Seek some steps... */ 1082 if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 1083 /* ...wait a moment... */ 1084 DELAY(300000); 1085 /* make ctrlr happy: */ 1086 fd_sense_int(fdc, 0, 0); 1087 } 1088 } 1089 1090 for (i = 0; i < 2; i++) { 1091 /* 1092 * we must recalibrate twice, just in case the 1093 * heads have been beyond cylinder 76, since most 1094 * FDCs still barf when attempting to recalibrate 1095 * more than 77 steps 1096 */ 1097 /* go back to 0: */ 1098 if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1099 /* a second being enough for full stroke seek*/ 1100 DELAY(i == 0 ? 1000000 : 300000); 1101 1102 /* anything responding? */ 1103 if (fd_sense_int(fdc, &st0, 0) == 0 && 1104 (st0 & NE7_ST0_EC) == 0) 1105 break; /* already probed succesfully */ 1106 } 1107 } 1108 1109 set_motor(fdc, fdsu, TURNOFF); 1110 1111 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */ 1112 return (ENXIO); 1113 1114 fd->track = FD_NO_TRACK; 1115 fd->fdc = fdc; 1116 fd->fdsu = fdsu; 1117 fd->options = 0; 1118 callout_handle_init(&fd->toffhandle); 1119 callout_handle_init(&fd->tohandle); 1120 1121 switch (fdt) { 1122 case RTCFDT_12M: 1123 device_set_desc(dev, "1200-KB 5.25\" drive"); 1124 fd->type = FD_1200; 1125 break; 1126 case RTCFDT_144M | RTCFDT_144M_PRETENDED: 1127 device_set_desc(dev, "config-pretended 1440-MB 3.5\" drive"); 1128 fdt = RTCFDT_144M; 1129 fd->type = FD_1440; 1130 case RTCFDT_144M: 1131 device_set_desc(dev, "1440-KB 3.5\" drive"); 1132 fd->type = FD_1440; 1133 break; 1134 case RTCFDT_288M: 1135 case RTCFDT_288M_1: 1136 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 1137 fd->type = FD_1440; 1138 break; 1139 case RTCFDT_360K: 1140 device_set_desc(dev, "360-KB 5.25\" drive"); 1141 fd->type = FD_360; 1142 break; 1143 case RTCFDT_720K: 1144 printf("720-KB 3.5\" drive"); 1145 fd->type = FD_720; 1146 break; 1147 default: 1148 return (ENXIO); 1149 } 1150 return (0); 1151 } 1152 1153 static int 1154 fd_attach(device_t dev) 1155 { 1156 struct fd_data *fd; 1157 static int cdevsw_add_done = 0; 1158 1159 fd = device_get_softc(dev); 1160 1161 if (!cdevsw_add_done) { 1162 cdevsw_add(&fd_cdevsw); /* XXX */ 1163 cdevsw_add_done++; 1164 } 1165 EVENTHANDLER_REGISTER(dev_clone, fd_clone, 0, 1000); 1166 make_dev(&fd_cdevsw, (fd->fdu << 6), 1167 UID_ROOT, GID_OPERATOR, 0640, "fd%d", fd->fdu); 1168 1169 /* 1170 * Export the drive to the devstat interface. 1171 */ 1172 devstat_add_entry(&fd->device_stats, device_get_name(dev), 1173 device_get_unit(dev), 512, DEVSTAT_NO_ORDERED_TAGS, 1174 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER, 1175 DEVSTAT_PRIORITY_FD); 1176 return (0); 1177 } 1178 1179 static int 1180 fd_detach(device_t dev) 1181 { 1182 struct fd_data *fd; 1183 1184 fd = device_get_softc(dev); 1185 untimeout(fd_turnoff, fd, fd->toffhandle); 1186 1187 return (0); 1188 } 1189 1190 static device_method_t fd_methods[] = { 1191 /* Device interface */ 1192 DEVMETHOD(device_probe, fd_probe), 1193 DEVMETHOD(device_attach, fd_attach), 1194 DEVMETHOD(device_detach, fd_detach), 1195 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1196 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 1197 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 1198 1199 { 0, 0 } 1200 }; 1201 1202 static driver_t fd_driver = { 1203 "fd", 1204 fd_methods, 1205 sizeof(struct fd_data) 1206 }; 1207 1208 DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, 0, 0); 1209 1210 /****************************************************************************/ 1211 /* motor control stuff */ 1212 /* remember to not deselect the drive we're working on */ 1213 /****************************************************************************/ 1214 static void 1215 set_motor(struct fdc_data *fdc, int fdsu, int turnon) 1216 { 1217 int fdout = fdc->fdout; 1218 int needspecify = 0; 1219 1220 if(turnon) { 1221 fdout &= ~FDO_FDSEL; 1222 fdout |= (FDO_MOEN0 << fdsu) + fdsu; 1223 } else 1224 fdout &= ~(FDO_MOEN0 << fdsu); 1225 1226 if(!turnon 1227 && (fdout & (FDO_MOEN0+FDO_MOEN1+FDO_MOEN2+FDO_MOEN3)) == 0) 1228 /* gonna turn off the last drive, put FDC to bed */ 1229 fdout &= ~ (FDO_FRST|FDO_FDMAEN); 1230 else { 1231 /* make sure controller is selected and specified */ 1232 if((fdout & (FDO_FRST|FDO_FDMAEN)) == 0) 1233 needspecify = 1; 1234 fdout |= (FDO_FRST|FDO_FDMAEN); 1235 } 1236 1237 fdout_wr(fdc, fdout); 1238 fdc->fdout = fdout; 1239 TRACE1("[0x%x->FDOUT]", fdout); 1240 1241 if (needspecify) { 1242 /* 1243 * XXX 1244 * special case: since we have just woken up the FDC 1245 * from its sleep, we silently assume the command will 1246 * be accepted, and do not test for a timeout 1247 */ 1248 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1249 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1250 0); 1251 if (fdc->flags & FDC_HAS_FIFO) 1252 (void) enable_fifo(fdc); 1253 } 1254 } 1255 1256 static void 1257 fd_turnoff(void *xfd) 1258 { 1259 int s; 1260 fd_p fd = xfd; 1261 1262 TRACE1("[fd%d: turnoff]", fd->fdu); 1263 1264 s = splbio(); 1265 /* 1266 * Don't turn off the motor yet if the drive is active. 1267 * 1268 * If we got here, this could only mean we missed an interrupt. 1269 * This can e. g. happen on the Y-E Date PCMCIA floppy controller 1270 * after a controller reset. Just schedule a pseudo-interrupt 1271 * so the state machine gets re-entered. 1272 */ 1273 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) { 1274 fdc_intr(fd->fdc); 1275 splx(s); 1276 return; 1277 } 1278 1279 fd->flags &= ~FD_MOTOR; 1280 set_motor(fd->fdc, fd->fdsu, TURNOFF); 1281 splx(s); 1282 } 1283 1284 static void 1285 fd_motor_on(void *xfd) 1286 { 1287 int s; 1288 fd_p fd = xfd; 1289 1290 s = splbio(); 1291 fd->flags &= ~FD_MOTOR_WAIT; 1292 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT)) 1293 { 1294 fdc_intr(fd->fdc); 1295 } 1296 splx(s); 1297 } 1298 1299 static void 1300 fd_turnon(fd_p fd) 1301 { 1302 if(!(fd->flags & FD_MOTOR)) 1303 { 1304 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT); 1305 set_motor(fd->fdc, fd->fdsu, TURNON); 1306 timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */ 1307 } 1308 } 1309 1310 static void 1311 fdc_reset(fdc_p fdc) 1312 { 1313 /* Try a reset, keep motor on */ 1314 fdout_wr(fdc, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1315 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1316 DELAY(100); 1317 /* enable FDC, but defer interrupts a moment */ 1318 fdout_wr(fdc, fdc->fdout & ~FDO_FDMAEN); 1319 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN); 1320 DELAY(100); 1321 fdout_wr(fdc, fdc->fdout); 1322 TRACE1("[0x%x->FDOUT]", fdc->fdout); 1323 1324 /* XXX after a reset, silently believe the FDC will accept commands */ 1325 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1326 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1327 0); 1328 if (fdc->flags & FDC_HAS_FIFO) 1329 (void) enable_fifo(fdc); 1330 } 1331 1332 /****************************************************************************/ 1333 /* fdc in/out */ 1334 /****************************************************************************/ 1335 int 1336 in_fdc(struct fdc_data *fdc) 1337 { 1338 int i, j = 100000; 1339 while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) 1340 != (NE7_DIO|NE7_RQM) && j-- > 0) 1341 if (i == NE7_RQM) 1342 return fdc_err(fdc, "ready for output in input\n"); 1343 if (j <= 0) 1344 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1345 #ifdef FDC_DEBUG 1346 i = fddata_rd(fdc); 1347 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1348 return(i); 1349 #else /* !FDC_DEBUG */ 1350 return fddata_rd(fdc); 1351 #endif /* FDC_DEBUG */ 1352 } 1353 1354 /* 1355 * fd_in: Like in_fdc, but allows you to see if it worked. 1356 */ 1357 static int 1358 fd_in(struct fdc_data *fdc, int *ptr) 1359 { 1360 int i, j = 100000; 1361 while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) 1362 != (NE7_DIO|NE7_RQM) && j-- > 0) 1363 if (i == NE7_RQM) 1364 return fdc_err(fdc, "ready for output in input\n"); 1365 if (j <= 0) 1366 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1367 #ifdef FDC_DEBUG 1368 i = fddata_rd(fdc); 1369 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1370 *ptr = i; 1371 return 0; 1372 #else /* !FDC_DEBUG */ 1373 i = fddata_rd(fdc); 1374 if (ptr) 1375 *ptr = i; 1376 return 0; 1377 #endif /* FDC_DEBUG */ 1378 } 1379 1380 int 1381 out_fdc(struct fdc_data *fdc, int x) 1382 { 1383 int i; 1384 1385 /* Check that the direction bit is set */ 1386 i = 100000; 1387 while ((fdsts_rd(fdc) & NE7_DIO) && i-- > 0); 1388 if (i <= 0) return fdc_err(fdc, "direction bit not set\n"); 1389 1390 /* Check that the floppy controller is ready for a command */ 1391 i = 100000; 1392 while ((fdsts_rd(fdc) & NE7_RQM) == 0 && i-- > 0); 1393 if (i <= 0) 1394 return fdc_err(fdc, bootverbose? "output ready timeout\n": 0); 1395 1396 /* Send the command and return */ 1397 fddata_wr(fdc, x); 1398 TRACE1("[0x%x->FDDATA]", x); 1399 return (0); 1400 } 1401 1402 /****************************************************************************/ 1403 /* fdopen/fdclose */ 1404 /****************************************************************************/ 1405 int 1406 Fdopen(dev_t dev, int flags, int mode, struct proc *p) 1407 { 1408 fdu_t fdu = FDUNIT(minor(dev)); 1409 int type = FDTYPE(minor(dev)); 1410 fd_p fd; 1411 fdc_p fdc; 1412 1413 /* check bounds */ 1414 if ((fd = devclass_get_softc(fd_devclass, fdu)) == 0) 1415 return (ENXIO); 1416 fdc = fd->fdc; 1417 if ((fdc == NULL) || (fd->type == NO_TYPE)) 1418 return (ENXIO); 1419 if (type > NUMDENS) 1420 return (ENXIO); 1421 if (type == 0) 1422 type = fd->type; 1423 else { 1424 /* 1425 * For each type of basic drive, make sure we are trying 1426 * to open a type it can do, 1427 */ 1428 if (type != fd->type) { 1429 switch (fd->type) { 1430 case FD_360: 1431 return (ENXIO); 1432 case FD_720: 1433 if ( type != FD_820 1434 && type != FD_800 1435 && type != FD_640 1436 ) 1437 return (ENXIO); 1438 break; 1439 case FD_1200: 1440 switch (type) { 1441 case FD_1480: 1442 type = FD_1480in5_25; 1443 break; 1444 case FD_1440: 1445 type = FD_1440in5_25; 1446 break; 1447 case FD_1232: 1448 break; 1449 case FD_820: 1450 type = FD_820in5_25; 1451 break; 1452 case FD_800: 1453 type = FD_800in5_25; 1454 break; 1455 case FD_720: 1456 type = FD_720in5_25; 1457 break; 1458 case FD_640: 1459 type = FD_640in5_25; 1460 break; 1461 case FD_360: 1462 type = FD_360in5_25; 1463 break; 1464 default: 1465 return(ENXIO); 1466 } 1467 break; 1468 case FD_1440: 1469 if ( type != FD_1720 1470 && type != FD_1480 1471 && type != FD_1200 1472 && type != FD_820 1473 && type != FD_800 1474 && type != FD_720 1475 && type != FD_640 1476 ) 1477 return(ENXIO); 1478 break; 1479 } 1480 } 1481 } 1482 fd->ft = fd_types + type - 1; 1483 fd->flags |= FD_OPEN; 1484 1485 return 0; 1486 } 1487 1488 int 1489 fdclose(dev_t dev, int flags, int mode, struct proc *p) 1490 { 1491 fdu_t fdu = FDUNIT(minor(dev)); 1492 struct fd_data *fd; 1493 1494 fd = devclass_get_softc(fd_devclass, fdu); 1495 fd->flags &= ~FD_OPEN; 1496 fd->options &= ~FDOPT_NORETRY; 1497 1498 return (0); 1499 } 1500 1501 /****************************************************************************/ 1502 /* fdstrategy */ 1503 /****************************************************************************/ 1504 void 1505 fdstrategy(struct bio *bp) 1506 { 1507 unsigned nblocks, blknum, cando; 1508 int s; 1509 fdu_t fdu; 1510 fdc_p fdc; 1511 fd_p fd; 1512 size_t fdblk; 1513 1514 fdu = FDUNIT(minor(bp->bio_dev)); 1515 fd = devclass_get_softc(fd_devclass, fdu); 1516 if (fd == 0) 1517 panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)", 1518 (u_long)major(bp->bio_dev), (u_long)minor(bp->bio_dev)); 1519 fdc = fd->fdc; 1520 if (fd->type == NO_TYPE) { 1521 bp->bio_error = ENXIO; 1522 bp->bio_flags |= BIO_ERROR; 1523 goto bad; 1524 }; 1525 1526 fdblk = 128 << (fd->ft->secsize); 1527 if (!(bp->bio_cmd & BIO_FORMAT)) { 1528 if (bp->bio_blkno < 0) { 1529 printf( 1530 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n", 1531 fdu, (u_long)bp->bio_blkno, bp->bio_bcount); 1532 bp->bio_error = EINVAL; 1533 bp->bio_flags |= BIO_ERROR; 1534 goto bad; 1535 } 1536 if ((bp->bio_bcount % fdblk) != 0) { 1537 bp->bio_error = EINVAL; 1538 bp->bio_flags |= BIO_ERROR; 1539 goto bad; 1540 } 1541 } 1542 1543 /* 1544 * Set up block calculations. 1545 */ 1546 if (bp->bio_blkno > 20000000) { 1547 /* 1548 * Reject unreasonably high block number, prevent the 1549 * multiplication below from overflowing. 1550 */ 1551 bp->bio_error = EINVAL; 1552 bp->bio_flags |= BIO_ERROR; 1553 goto bad; 1554 } 1555 blknum = (unsigned) bp->bio_blkno * DEV_BSIZE/fdblk; 1556 nblocks = fd->ft->size; 1557 bp->bio_resid = 0; 1558 if (blknum + (bp->bio_bcount / fdblk) > nblocks) { 1559 if (blknum <= nblocks) { 1560 cando = (nblocks - blknum) * fdblk; 1561 bp->bio_resid = bp->bio_bcount - cando; 1562 if (cando == 0) 1563 goto bad; /* not actually bad but EOF */ 1564 } else { 1565 bp->bio_error = EINVAL; 1566 bp->bio_flags |= BIO_ERROR; 1567 goto bad; 1568 } 1569 } 1570 bp->bio_pblkno = bp->bio_blkno; 1571 s = splbio(); 1572 bioqdisksort(&fdc->head, bp); 1573 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */ 1574 1575 /* Tell devstat we are starting on the transaction */ 1576 devstat_start_transaction(&fd->device_stats); 1577 device_busy(fd->dev); 1578 1579 fdstart(fdc); 1580 splx(s); 1581 return; 1582 1583 bad: 1584 biodone(bp); 1585 } 1586 1587 /***************************************************************\ 1588 * fdstart * 1589 * We have just queued something.. if the controller is not busy * 1590 * then simulate the case where it has just finished a command * 1591 * So that it (the interrupt routine) looks on the queue for more* 1592 * work to do and picks up what we just added. * 1593 * If the controller is already busy, we need do nothing, as it * 1594 * will pick up our work when the present work completes * 1595 \***************************************************************/ 1596 static void 1597 fdstart(struct fdc_data *fdc) 1598 { 1599 int s; 1600 1601 s = splbio(); 1602 if(fdc->state == DEVIDLE) 1603 { 1604 fdc_intr(fdc); 1605 } 1606 splx(s); 1607 } 1608 1609 static void 1610 fd_iotimeout(void *xfdc) 1611 { 1612 fdc_p fdc; 1613 int s; 1614 1615 fdc = xfdc; 1616 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); 1617 1618 /* 1619 * Due to IBM's brain-dead design, the FDC has a faked ready 1620 * signal, hardwired to ready == true. Thus, any command 1621 * issued if there's no diskette in the drive will _never_ 1622 * complete, and must be aborted by resetting the FDC. 1623 * Many thanks, Big Blue! 1624 * The FDC must not be reset directly, since that would 1625 * interfere with the state machine. Instead, pretend that 1626 * the command completed but was invalid. The state machine 1627 * will reset the FDC and retry once. 1628 */ 1629 s = splbio(); 1630 fdc->status[0] = NE7_ST0_IC_IV; 1631 fdc->flags &= ~FDC_STAT_VALID; 1632 fdc->state = IOTIMEDOUT; 1633 fdc_intr(fdc); 1634 splx(s); 1635 } 1636 1637 /* just ensure it has the right spl */ 1638 static void 1639 fd_pseudointr(void *xfdc) 1640 { 1641 int s; 1642 1643 s = splbio(); 1644 fdc_intr(xfdc); 1645 splx(s); 1646 } 1647 1648 /***********************************************************************\ 1649 * fdintr * 1650 * keep calling the state machine until it returns a 0 * 1651 * ALWAYS called at SPLBIO * 1652 \***********************************************************************/ 1653 static void 1654 fdc_intr(void *xfdc) 1655 { 1656 fdc_p fdc = xfdc; 1657 while(fdstate(fdc)) 1658 ; 1659 } 1660 1661 /* 1662 * magic pseudo-DMA initialization for YE FDC. Sets count and 1663 * direction 1664 */ 1665 #define SET_BCDR(fdc,wr,cnt,port) \ 1666 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port, \ 1667 ((cnt)-1) & 0xff); \ 1668 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port + 1, \ 1669 ((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))); 1670 1671 /* 1672 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy 1673 */ 1674 static int fdcpio(fdc_p fdc, long flags, caddr_t addr, u_int count) 1675 { 1676 u_char *cptr = (u_char *)addr; 1677 1678 if (flags == BIO_READ) { 1679 if (fdc->state != PIOREAD) { 1680 fdc->state = PIOREAD; 1681 return(0); 1682 }; 1683 SET_BCDR(fdc, 0, count, 0); 1684 bus_space_read_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1685 FDC_YE_DATAPORT, cptr, count); 1686 } else { 1687 bus_space_write_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1688 FDC_YE_DATAPORT, cptr, count); 1689 SET_BCDR(fdc, 0, count, 0); 1690 }; 1691 return(1); 1692 } 1693 1694 /***********************************************************************\ 1695 * The controller state machine. * 1696 * if it returns a non zero value, it should be called again immediatly * 1697 \***********************************************************************/ 1698 static int 1699 fdstate(fdc_p fdc) 1700 { 1701 int read, format, head, i, sec = 0, sectrac, st0, cyl, st3, idf; 1702 unsigned blknum = 0, b_cylinder = 0; 1703 fdu_t fdu = fdc->fdu; 1704 fd_p fd; 1705 register struct bio *bp; 1706 struct fd_formb *finfo = NULL; 1707 size_t fdblk; 1708 1709 bp = fdc->bp; 1710 if (bp == NULL) { 1711 bp = bioq_first(&fdc->head); 1712 if (bp != NULL) { 1713 bioq_remove(&fdc->head, bp); 1714 fdc->bp = bp; 1715 } 1716 } 1717 if (bp == NULL) { 1718 /***********************************************\ 1719 * nothing left for this controller to do * 1720 * Force into the IDLE state, * 1721 \***********************************************/ 1722 fdc->state = DEVIDLE; 1723 if (fdc->fd) { 1724 device_printf(fdc->fdc_dev, 1725 "unexpected valid fd pointer\n"); 1726 fdc->fd = (fd_p) 0; 1727 fdc->fdu = -1; 1728 } 1729 TRACE1("[fdc%d IDLE]", fdc->fdcu); 1730 return (0); 1731 } 1732 fdu = FDUNIT(minor(bp->bio_dev)); 1733 fd = devclass_get_softc(fd_devclass, fdu); 1734 fdblk = 128 << fd->ft->secsize; 1735 if (fdc->fd && (fd != fdc->fd)) 1736 device_printf(fd->dev, "confused fd pointers\n"); 1737 read = bp->bio_cmd == BIO_READ; 1738 if (read) 1739 idf = ISADMA_READ; 1740 else 1741 idf = ISADMA_WRITE; 1742 format = bp->bio_cmd & BIO_FORMAT; 1743 if (format) { 1744 finfo = (struct fd_formb *)bp->bio_data; 1745 fd->skip = (char *)&(finfo->fd_formb_cylno(0)) 1746 - (char *)finfo; 1747 } 1748 if (fdc->state == DOSEEK || fdc->state == SEEKCOMPLETE) { 1749 blknum = (unsigned) bp->bio_pblkno * DEV_BSIZE/fdblk + 1750 fd->skip/fdblk; 1751 b_cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 1752 } 1753 TRACE1("fd%d", fdu); 1754 TRACE1("[%s]", fdstates[fdc->state]); 1755 TRACE1("(0x%x)", fd->flags); 1756 untimeout(fd_turnoff, fd, fd->toffhandle); 1757 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 1758 switch (fdc->state) 1759 { 1760 case DEVIDLE: 1761 case FINDWORK: /* we have found new work */ 1762 fdc->retry = 0; 1763 fd->skip = 0; 1764 fdc->fd = fd; 1765 fdc->fdu = fdu; 1766 fdc->fdctl_wr(fdc, fd->ft->trans); 1767 TRACE1("[0x%x->FDCTL]", fd->ft->trans); 1768 /*******************************************************\ 1769 * If the next drive has a motor startup pending, then * 1770 * it will start up in its own good time * 1771 \*******************************************************/ 1772 if(fd->flags & FD_MOTOR_WAIT) { 1773 fdc->state = MOTORWAIT; 1774 return (0); /* come back later */ 1775 } 1776 /*******************************************************\ 1777 * Maybe if it's not starting, it SHOULD be starting * 1778 \*******************************************************/ 1779 if (!(fd->flags & FD_MOTOR)) 1780 { 1781 fdc->state = MOTORWAIT; 1782 fd_turnon(fd); 1783 return (0); 1784 } 1785 else /* at least make sure we are selected */ 1786 { 1787 set_motor(fdc, fd->fdsu, TURNON); 1788 } 1789 if (fdc->flags & FDC_NEEDS_RESET) { 1790 fdc->state = RESETCTLR; 1791 fdc->flags &= ~FDC_NEEDS_RESET; 1792 } else 1793 fdc->state = DOSEEK; 1794 break; 1795 case DOSEEK: 1796 if (b_cylinder == (unsigned)fd->track) 1797 { 1798 fdc->state = SEEKCOMPLETE; 1799 break; 1800 } 1801 if (fd_cmd(fdc, 3, NE7CMD_SEEK, 1802 fd->fdsu, b_cylinder * fd->ft->steptrac, 1803 0)) 1804 { 1805 /* 1806 * seek command not accepted, looks like 1807 * the FDC went off to the Saints... 1808 */ 1809 fdc->retry = 6; /* try a reset */ 1810 return(retrier(fdc)); 1811 } 1812 fd->track = FD_NO_TRACK; 1813 fdc->state = SEEKWAIT; 1814 return(0); /* will return later */ 1815 case SEEKWAIT: 1816 /* allow heads to settle */ 1817 timeout(fd_pseudointr, fdc, hz / 16); 1818 fdc->state = SEEKCOMPLETE; 1819 return(0); /* will return later */ 1820 case SEEKCOMPLETE : /* SEEK DONE, START DMA */ 1821 /* Make sure seek really happened*/ 1822 if(fd->track == FD_NO_TRACK) { 1823 int descyl = b_cylinder * fd->ft->steptrac; 1824 do { 1825 /* 1826 * This might be a "ready changed" interrupt, 1827 * which cannot really happen since the 1828 * RDY pin is hardwired to + 5 volts. This 1829 * generally indicates a "bouncing" intr 1830 * line, so do one of the following: 1831 * 1832 * When running on an enhanced FDC that is 1833 * known to not go stuck after responding 1834 * with INVALID, fetch all interrupt states 1835 * until seeing either an INVALID or a 1836 * real interrupt condition. 1837 * 1838 * When running on a dumb old NE765, give 1839 * up immediately. The controller will 1840 * provide up to four dummy RC interrupt 1841 * conditions right after reset (for the 1842 * corresponding four drives), so this is 1843 * our only chance to get notice that it 1844 * was not the FDC that caused the interrupt. 1845 */ 1846 if (fd_sense_int(fdc, &st0, &cyl) 1847 == FD_NOT_VALID) 1848 return 0; 1849 if(fdc->fdct == FDC_NE765 1850 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 1851 return 0; /* hope for a real intr */ 1852 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 1853 1854 if (0 == descyl) { 1855 int failed = 0; 1856 /* 1857 * seek to cyl 0 requested; make sure we are 1858 * really there 1859 */ 1860 if (fd_sense_drive_status(fdc, &st3)) 1861 failed = 1; 1862 if ((st3 & NE7_ST3_T0) == 0) { 1863 printf( 1864 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", 1865 fdu, st3, NE7_ST3BITS); 1866 failed = 1; 1867 } 1868 1869 if (failed) { 1870 if(fdc->retry < 3) 1871 fdc->retry = 3; 1872 return (retrier(fdc)); 1873 } 1874 } 1875 1876 if (cyl != descyl) { 1877 printf( 1878 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", 1879 fdu, descyl, cyl, st0); 1880 if (fdc->retry < 3) 1881 fdc->retry = 3; 1882 return (retrier(fdc)); 1883 } 1884 } 1885 1886 fd->track = b_cylinder; 1887 if (!(fdc->flags & FDC_NODMA)) 1888 isa_dmastart(idf, bp->bio_data+fd->skip, 1889 format ? bp->bio_bcount : fdblk, fdc->dmachan); 1890 sectrac = fd->ft->sectrac; 1891 sec = blknum % (sectrac * fd->ft->heads); 1892 head = sec / sectrac; 1893 sec = sec % sectrac + 1; 1894 fd->hddrv = ((head&1)<<2)+fdu; 1895 1896 if(format || !read) 1897 { 1898 /* make sure the drive is writable */ 1899 if(fd_sense_drive_status(fdc, &st3) != 0) 1900 { 1901 /* stuck controller? */ 1902 if (!(fdc->flags & FDC_NODMA)) 1903 isa_dmadone(idf, 1904 bp->bio_data + fd->skip, 1905 format ? bp->bio_bcount : fdblk, 1906 fdc->dmachan); 1907 fdc->retry = 6; /* reset the beast */ 1908 return (retrier(fdc)); 1909 } 1910 if(st3 & NE7_ST3_WP) 1911 { 1912 /* 1913 * XXX YES! this is ugly. 1914 * in order to force the current operation 1915 * to fail, we will have to fake an FDC 1916 * error - all error handling is done 1917 * by the retrier() 1918 */ 1919 fdc->status[0] = NE7_ST0_IC_AT; 1920 fdc->status[1] = NE7_ST1_NW; 1921 fdc->status[2] = 0; 1922 fdc->status[3] = fd->track; 1923 fdc->status[4] = head; 1924 fdc->status[5] = sec; 1925 fdc->retry = 8; /* break out immediately */ 1926 fdc->state = IOTIMEDOUT; /* not really... */ 1927 return (1); 1928 } 1929 } 1930 1931 if (format) { 1932 if (fdc->flags & FDC_NODMA) { 1933 /* 1934 * This seems to be necessary for 1935 * whatever obscure reason; if we omit 1936 * it, we end up filling the sector ID 1937 * fields of the newly formatted track 1938 * entirely with garbage, causing 1939 * `wrong cylinder' errors all over 1940 * the place when trying to read them 1941 * back. 1942 * 1943 * Umpf. 1944 */ 1945 SET_BCDR(fdc, 1, bp->bio_bcount, 0); 1946 1947 (void)fdcpio(fdc,bp->bio_cmd, 1948 bp->bio_data+fd->skip, 1949 bp->bio_bcount); 1950 1951 } 1952 /* formatting */ 1953 if(fd_cmd(fdc, 6, NE7CMD_FORMAT, head << 2 | fdu, 1954 finfo->fd_formb_secshift, 1955 finfo->fd_formb_nsecs, 1956 finfo->fd_formb_gaplen, 1957 finfo->fd_formb_fillbyte, 0)) { 1958 /* controller fell over */ 1959 if (!(fdc->flags & FDC_NODMA)) 1960 isa_dmadone(idf, 1961 bp->bio_data + fd->skip, 1962 format ? bp->bio_bcount : fdblk, 1963 fdc->dmachan); 1964 fdc->retry = 6; 1965 return (retrier(fdc)); 1966 } 1967 } else { 1968 if (fdc->flags & FDC_NODMA) { 1969 /* 1970 * this seems to be necessary even when 1971 * reading data 1972 */ 1973 SET_BCDR(fdc, 1, fdblk, 0); 1974 1975 /* 1976 * perform the write pseudo-DMA before 1977 * the WRITE command is sent 1978 */ 1979 if (!read) 1980 (void)fdcpio(fdc,bp->bio_cmd, 1981 bp->bio_data+fd->skip, 1982 fdblk); 1983 } 1984 if (fd_cmd(fdc, 9, 1985 (read ? NE7CMD_READ : NE7CMD_WRITE), 1986 head << 2 | fdu, /* head & unit */ 1987 fd->track, /* track */ 1988 head, 1989 sec, /* sector + 1 */ 1990 fd->ft->secsize, /* sector size */ 1991 sectrac, /* sectors/track */ 1992 fd->ft->gap, /* gap size */ 1993 fd->ft->datalen, /* data length */ 1994 0)) { 1995 /* the beast is sleeping again */ 1996 if (!(fdc->flags & FDC_NODMA)) 1997 isa_dmadone(idf, 1998 bp->bio_data + fd->skip, 1999 format ? bp->bio_bcount : fdblk, 2000 fdc->dmachan); 2001 fdc->retry = 6; 2002 return (retrier(fdc)); 2003 } 2004 } 2005 if (fdc->flags & FDC_NODMA) 2006 /* 2007 * if this is a read, then simply await interrupt 2008 * before performing PIO 2009 */ 2010 if (read && !fdcpio(fdc,bp->bio_cmd, 2011 bp->bio_data+fd->skip,fdblk)) { 2012 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 2013 return(0); /* will return later */ 2014 }; 2015 2016 /* 2017 * write (or format) operation will fall through and 2018 * await completion interrupt 2019 */ 2020 fdc->state = IOCOMPLETE; 2021 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 2022 return (0); /* will return later */ 2023 case PIOREAD: 2024 /* 2025 * actually perform the PIO read. The IOCOMPLETE case 2026 * removes the timeout for us. 2027 */ 2028 (void)fdcpio(fdc,bp->bio_cmd,bp->bio_data+fd->skip,fdblk); 2029 fdc->state = IOCOMPLETE; 2030 /* FALLTHROUGH */ 2031 case IOCOMPLETE: /* IO DONE, post-analyze */ 2032 untimeout(fd_iotimeout, fdc, fd->tohandle); 2033 2034 if (fd_read_status(fdc, fd->fdsu)) { 2035 if (!(fdc->flags & FDC_NODMA)) 2036 isa_dmadone(idf, bp->bio_data + fd->skip, 2037 format ? bp->bio_bcount : fdblk, 2038 fdc->dmachan); 2039 if (fdc->retry < 6) 2040 fdc->retry = 6; /* force a reset */ 2041 return (retrier(fdc)); 2042 } 2043 2044 fdc->state = IOTIMEDOUT; 2045 2046 /* FALLTHROUGH */ 2047 2048 case IOTIMEDOUT: 2049 if (!(fdc->flags & FDC_NODMA)) 2050 isa_dmadone(idf, bp->bio_data + fd->skip, 2051 format ? bp->bio_bcount : fdblk, fdc->dmachan); 2052 if (fdc->status[0] & NE7_ST0_IC) { 2053 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2054 && fdc->status[1] & NE7_ST1_OR) { 2055 /* 2056 * DMA overrun. Someone hogged the bus 2057 * and didn't release it in time for the 2058 * next FDC transfer. 2059 * Just restart it, don't increment retry 2060 * count. (vak) 2061 */ 2062 fdc->state = SEEKCOMPLETE; 2063 return (1); 2064 } 2065 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV 2066 && fdc->retry < 6) 2067 fdc->retry = 6; /* force a reset */ 2068 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2069 && fdc->status[2] & NE7_ST2_WC 2070 && fdc->retry < 3) 2071 fdc->retry = 3; /* force recalibrate */ 2072 return (retrier(fdc)); 2073 } 2074 /* All OK */ 2075 fd->skip += fdblk; 2076 if (!format && fd->skip < bp->bio_bcount - bp->bio_resid) { 2077 /* set up next transfer */ 2078 fdc->state = DOSEEK; 2079 } else { 2080 /* ALL DONE */ 2081 fd->skip = 0; 2082 fdc->bp = NULL; 2083 device_unbusy(fd->dev); 2084 devstat_end_transaction_bio(&fd->device_stats, bp); 2085 biodone(bp); 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 devstat_end_transaction_bio(&fdc->fd->device_stats, bp); 2249 biodone(bp); 2250 fdc->state = FINDWORK; 2251 fdc->flags |= FDC_NEEDS_RESET; 2252 fdc->fd = (fd_p) 0; 2253 fdc->fdu = -1; 2254 return (1); 2255 } 2256 fdc->retry++; 2257 return (1); 2258 } 2259 2260 static void 2261 fdbiodone(struct bio *bp) 2262 { 2263 wakeup(bp); 2264 } 2265 2266 static int 2267 fdformat(dev, finfo, p) 2268 dev_t dev; 2269 struct fd_formb *finfo; 2270 struct proc *p; 2271 { 2272 fdu_t fdu; 2273 fd_p fd; 2274 2275 struct bio *bp; 2276 int rv = 0, s; 2277 size_t fdblk; 2278 2279 fdu = FDUNIT(minor(dev)); 2280 fd = devclass_get_softc(fd_devclass, fdu); 2281 fdblk = 128 << fd->ft->secsize; 2282 2283 /* set up a buffer header for fdstrategy() */ 2284 bp = (struct bio *)malloc(sizeof(struct bio), M_TEMP, M_NOWAIT); 2285 if(bp == 0) 2286 return ENOMEM; 2287 /* 2288 * keep the process from being swapped 2289 */ 2290 PHOLD(p); 2291 bzero((void *)bp, sizeof(*bp)); 2292 bp->bio_cmd = BIO_FORMAT; 2293 2294 /* 2295 * calculate a fake blkno, so fdstrategy() would initiate a 2296 * seek to the requested cylinder 2297 */ 2298 bp->bio_blkno = (finfo->cyl * (fd->ft->sectrac * fd->ft->heads) 2299 + finfo->head * fd->ft->sectrac) * fdblk / DEV_BSIZE; 2300 2301 bp->bio_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2302 bp->bio_data = (caddr_t)finfo; 2303 2304 /* now do the format */ 2305 bp->bio_dev = dev; 2306 bp->bio_done = fdbiodone; 2307 fdstrategy(bp); 2308 2309 /* ...and wait for it to complete */ 2310 s = splbio(); 2311 while(!(bp->bio_flags & BIO_DONE)) { 2312 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2313 if (rv == EWOULDBLOCK) 2314 break; 2315 } 2316 splx(s); 2317 2318 if (rv == EWOULDBLOCK) { 2319 /* timed out */ 2320 rv = EIO; 2321 device_unbusy(fd->dev); 2322 } 2323 if (bp->bio_flags & BIO_ERROR) 2324 rv = bp->bio_error; 2325 /* 2326 * allow the process to be swapped 2327 */ 2328 PRELE(p); 2329 free(bp, M_TEMP); 2330 return rv; 2331 } 2332 2333 /* 2334 * TODO: don't allocate buffer on stack. 2335 */ 2336 2337 static int 2338 fdioctl(dev, cmd, addr, flag, p) 2339 dev_t dev; 2340 u_long cmd; 2341 caddr_t addr; 2342 int flag; 2343 struct proc *p; 2344 { 2345 fdu_t fdu = FDUNIT(minor(dev)); 2346 fd_p fd = devclass_get_softc(fd_devclass, fdu); 2347 size_t fdblk; 2348 2349 struct fd_type *fdt; 2350 struct disklabel *dl; 2351 char buffer[DEV_BSIZE]; 2352 int error = 0; 2353 2354 fdblk = 128 << fd->ft->secsize; 2355 2356 switch (cmd) { 2357 case DIOCGDINFO: 2358 bzero(buffer, sizeof (buffer)); 2359 dl = (struct disklabel *)buffer; 2360 dl->d_secsize = fdblk; 2361 fdt = fd->ft; 2362 dl->d_secpercyl = fdt->size / fdt->tracks; 2363 dl->d_type = DTYPE_FLOPPY; 2364 2365 if (readdisklabel(dkmodpart(dev, RAW_PART), dl) 2366 == NULL) 2367 error = 0; 2368 else 2369 error = EINVAL; 2370 2371 *(struct disklabel *)addr = *dl; 2372 break; 2373 2374 case DIOCSDINFO: 2375 if ((flag & FWRITE) == 0) 2376 error = EBADF; 2377 break; 2378 2379 case DIOCWLABEL: 2380 if ((flag & FWRITE) == 0) 2381 error = EBADF; 2382 break; 2383 2384 case DIOCWDINFO: 2385 if ((flag & FWRITE) == 0) { 2386 error = EBADF; 2387 break; 2388 } 2389 2390 dl = (struct disklabel *)addr; 2391 2392 if ((error = setdisklabel((struct disklabel *)buffer, dl, 2393 (u_long)0)) != 0) 2394 break; 2395 2396 error = writedisklabel(dev, (struct disklabel *)buffer); 2397 break; 2398 case FD_FORM: 2399 if ((flag & FWRITE) == 0) 2400 error = EBADF; /* must be opened for writing */ 2401 else if (((struct fd_formb *)addr)->format_version != 2402 FD_FORMAT_VERSION) 2403 error = EINVAL; /* wrong version of formatting prog */ 2404 else 2405 error = fdformat(dev, (struct fd_formb *)addr, p); 2406 break; 2407 2408 case FD_GTYPE: /* get drive type */ 2409 *(struct fd_type *)addr = *fd->ft; 2410 break; 2411 2412 case FD_STYPE: /* set drive type */ 2413 /* this is considered harmful; only allow for superuser */ 2414 if (suser(p) != 0) 2415 return EPERM; 2416 *fd->ft = *(struct fd_type *)addr; 2417 break; 2418 2419 case FD_GOPTS: /* get drive options */ 2420 *(int *)addr = fd->options; 2421 break; 2422 2423 case FD_SOPTS: /* set drive options */ 2424 fd->options = *(int *)addr; 2425 break; 2426 2427 default: 2428 error = ENOTTY; 2429 break; 2430 } 2431 return (error); 2432 } 2433 2434 /* 2435 * Hello emacs, these are the 2436 * Local Variables: 2437 * c-indent-level: 8 2438 * c-continued-statement-offset: 8 2439 * c-continued-brace-offset: 0 2440 * c-brace-offset: -8 2441 * c-brace-imaginary-offset: 0 2442 * c-argdecl-indent: 8 2443 * c-label-offset: -8 2444 * c++-hanging-braces: 1 2445 * c++-access-specifier-offset: -8 2446 * c++-empty-arglist-indent: 8 2447 * c++-friend-offset: 0 2448 * End: 2449 */ 2450