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 "opt_devfs.h" 56 #include "card.h" 57 58 #include <sys/param.h> 59 #include <sys/systm.h> 60 #include <sys/kernel.h> 61 #include <sys/bio.h> 62 #include <sys/bus.h> 63 #include <sys/conf.h> 64 #include <sys/disklabel.h> 65 #include <sys/devicestat.h> 66 #include <sys/fcntl.h> 67 #include <sys/malloc.h> 68 #include <sys/module.h> 69 #include <sys/proc.h> 70 #include <sys/syslog.h> 71 72 #include <sys/bus.h> 73 #include <machine/bus.h> 74 #include <sys/rman.h> 75 76 #include <machine/clock.h> 77 #include <machine/ioctl_fd.h> 78 #include <machine/resource.h> 79 #include <machine/stdarg.h> 80 81 #include <isa/isavar.h> 82 #include <isa/isareg.h> 83 #include <isa/fdreg.h> 84 #include <isa/fdc.h> 85 #include <isa/rtc.h> 86 87 #ifdef DEVFS 88 #include <sys/ctype.h> 89 #include <sys/eventhandler.h> 90 #include <fs/devfs/devfs.h> 91 #endif 92 93 /* misuse a flag to identify format operation */ 94 95 /* configuration flags */ 96 #define FDC_PRETEND_D0 (1 << 0) /* pretend drive 0 to be there */ 97 #define FDC_NO_FIFO (1 << 2) /* do not enable FIFO */ 98 99 /* internally used only, not really from CMOS: */ 100 #define RTCFDT_144M_PRETENDED 0x1000 101 102 /* error returns for fd_cmd() */ 103 #define FD_FAILED -1 104 #define FD_NOT_VALID -2 105 #define FDC_ERRMAX 100 /* do not log more */ 106 107 #define NUMTYPES 17 108 #define NUMDENS (NUMTYPES - 7) 109 110 /* These defines (-1) must match index for fd_types */ 111 #define F_TAPE_TYPE 0x020 /* bit for fd_types to indicate tape */ 112 #define NO_TYPE 0 /* must match NO_TYPE in ft.c */ 113 #define FD_1720 1 114 #define FD_1480 2 115 #define FD_1440 3 116 #define FD_1200 4 117 #define FD_820 5 118 #define FD_800 6 119 #define FD_720 7 120 #define FD_360 8 121 #define FD_640 9 122 #define FD_1232 10 123 124 #define FD_1480in5_25 11 125 #define FD_1440in5_25 12 126 #define FD_820in5_25 13 127 #define FD_800in5_25 14 128 #define FD_720in5_25 15 129 #define FD_360in5_25 16 130 #define FD_640in5_25 17 131 132 133 static struct fd_type fd_types[NUMTYPES] = 134 { 135 { 21,2,0xFF,0x04,82,3444,1,FDC_500KBPS,2,0x0C,2 }, /* 1.72M in HD 3.5in */ 136 { 18,2,0xFF,0x1B,82,2952,1,FDC_500KBPS,2,0x6C,1 }, /* 1.48M in HD 3.5in */ 137 { 18,2,0xFF,0x1B,80,2880,1,FDC_500KBPS,2,0x6C,1 }, /* 1.44M in HD 3.5in */ 138 { 15,2,0xFF,0x1B,80,2400,1,FDC_500KBPS,2,0x54,1 }, /* 1.2M in HD 5.25/3.5 */ 139 { 10,2,0xFF,0x10,82,1640,1,FDC_250KBPS,2,0x2E,1 }, /* 820K in HD 3.5in */ 140 { 10,2,0xFF,0x10,80,1600,1,FDC_250KBPS,2,0x2E,1 }, /* 800K in HD 3.5in */ 141 { 9,2,0xFF,0x20,80,1440,1,FDC_250KBPS,2,0x50,1 }, /* 720K in HD 3.5in */ 142 { 9,2,0xFF,0x2A,40, 720,1,FDC_250KBPS,2,0x50,1 }, /* 360K in DD 5.25in */ 143 { 8,2,0xFF,0x2A,80,1280,1,FDC_250KBPS,2,0x50,1 }, /* 640K in DD 5.25in */ 144 { 8,3,0xFF,0x35,77,1232,1,FDC_500KBPS,2,0x74,1 }, /* 1.23M in HD 5.25in */ 145 146 { 18,2,0xFF,0x02,82,2952,1,FDC_500KBPS,2,0x02,2 }, /* 1.48M in HD 5.25in */ 147 { 18,2,0xFF,0x02,80,2880,1,FDC_500KBPS,2,0x02,2 }, /* 1.44M in HD 5.25in */ 148 { 10,2,0xFF,0x10,82,1640,1,FDC_300KBPS,2,0x2E,1 }, /* 820K in HD 5.25in */ 149 { 10,2,0xFF,0x10,80,1600,1,FDC_300KBPS,2,0x2E,1 }, /* 800K in HD 5.25in */ 150 { 9,2,0xFF,0x20,80,1440,1,FDC_300KBPS,2,0x50,1 }, /* 720K in HD 5.25in */ 151 { 9,2,0xFF,0x23,40, 720,2,FDC_300KBPS,2,0x50,1 }, /* 360K in HD 5.25in */ 152 { 8,2,0xFF,0x2A,80,1280,1,FDC_300KBPS,2,0x50,1 }, /* 640K in HD 5.25in */ 153 }; 154 155 #define DRVS_PER_CTLR 2 /* 2 floppies */ 156 157 /***********************************************************************\ 158 * Per controller structure. * 159 \***********************************************************************/ 160 static devclass_t fdc_devclass; 161 162 /***********************************************************************\ 163 * Per drive structure. * 164 * N per controller (DRVS_PER_CTLR) * 165 \***********************************************************************/ 166 struct fd_data { 167 struct fdc_data *fdc; /* pointer to controller structure */ 168 int fdsu; /* this units number on this controller */ 169 int type; /* Drive type (FD_1440...) */ 170 struct fd_type *ft; /* pointer to the type descriptor */ 171 int flags; 172 #define FD_OPEN 0x01 /* it's open */ 173 #define FD_ACTIVE 0x02 /* it's active */ 174 #define FD_MOTOR 0x04 /* motor should be on */ 175 #define FD_MOTOR_WAIT 0x08 /* motor coming up */ 176 int skip; 177 int hddrv; 178 #define FD_NO_TRACK -2 179 int track; /* where we think the head is */ 180 int options; /* user configurable options, see ioctl_fd.h */ 181 struct callout_handle toffhandle; 182 struct callout_handle tohandle; 183 struct devstat device_stats; 184 device_t dev; 185 fdu_t fdu; 186 }; 187 188 struct fdc_ivars { 189 int fdunit; 190 }; 191 static devclass_t fd_devclass; 192 193 /***********************************************************************\ 194 * Throughout this file the following conventions will be used: * 195 * fd is a pointer to the fd_data struct for the drive in question * 196 * fdc is a pointer to the fdc_data struct for the controller * 197 * fdu is the floppy drive unit number * 198 * fdcu is the floppy controller unit number * 199 * fdsu is the floppy drive unit number on that controller. (sub-unit) * 200 \***********************************************************************/ 201 202 /* needed for ft driver, thus exported */ 203 int in_fdc(struct fdc_data *); 204 int out_fdc(struct fdc_data *, int); 205 206 /* internal functions */ 207 static void fdc_intr(void *); 208 static void set_motor(struct fdc_data *, int, int); 209 # define TURNON 1 210 # define TURNOFF 0 211 static timeout_t fd_turnoff; 212 static timeout_t fd_motor_on; 213 static void fd_turnon(struct fd_data *); 214 static void fdc_reset(fdc_p); 215 static int fd_in(struct fdc_data *, int *); 216 static void fdstart(struct fdc_data *); 217 static timeout_t fd_iotimeout; 218 static timeout_t fd_pseudointr; 219 static int fdstate(struct fdc_data *); 220 static int retrier(struct fdc_data *); 221 static int fdformat(dev_t, struct fd_formb *, struct proc *); 222 223 static int enable_fifo(fdc_p fdc); 224 225 static int fifo_threshold = 8; /* XXX: should be accessible via sysctl */ 226 227 228 #define DEVIDLE 0 229 #define FINDWORK 1 230 #define DOSEEK 2 231 #define SEEKCOMPLETE 3 232 #define IOCOMPLETE 4 233 #define RECALCOMPLETE 5 234 #define STARTRECAL 6 235 #define RESETCTLR 7 236 #define SEEKWAIT 8 237 #define RECALWAIT 9 238 #define MOTORWAIT 10 239 #define IOTIMEDOUT 11 240 #define RESETCOMPLETE 12 241 #define PIOREAD 13 242 243 #ifdef FDC_DEBUG 244 static char const * const fdstates[] = 245 { 246 "DEVIDLE", 247 "FINDWORK", 248 "DOSEEK", 249 "SEEKCOMPLETE", 250 "IOCOMPLETE", 251 "RECALCOMPLETE", 252 "STARTRECAL", 253 "RESETCTLR", 254 "SEEKWAIT", 255 "RECALWAIT", 256 "MOTORWAIT", 257 "IOTIMEDOUT", 258 "RESETCOMPLETE", 259 "PIOREAD", 260 }; 261 262 /* CAUTION: fd_debug causes huge amounts of logging output */ 263 static int volatile fd_debug = 0; 264 #define TRACE0(arg) if(fd_debug) printf(arg) 265 #define TRACE1(arg1, arg2) if(fd_debug) printf(arg1, arg2) 266 #else /* FDC_DEBUG */ 267 #define TRACE0(arg) 268 #define TRACE1(arg1, arg2) 269 #endif /* FDC_DEBUG */ 270 271 static void 272 fdout_wr(fdc_p fdc, u_int8_t v) 273 { 274 bus_space_write_1(fdc->portt, fdc->porth, FDOUT+fdc->port_off, v); 275 } 276 277 static u_int8_t 278 fdsts_rd(fdc_p fdc) 279 { 280 return bus_space_read_1(fdc->portt, fdc->porth, FDSTS+fdc->port_off); 281 } 282 283 static void 284 fddata_wr(fdc_p fdc, u_int8_t v) 285 { 286 bus_space_write_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off, v); 287 } 288 289 static u_int8_t 290 fddata_rd(fdc_p fdc) 291 { 292 return bus_space_read_1(fdc->portt, fdc->porth, FDDATA+fdc->port_off); 293 } 294 295 static void 296 fdctl_wr_isa(fdc_p fdc, u_int8_t v) 297 { 298 bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v); 299 } 300 301 #if NCARD > 0 302 static void 303 fdctl_wr_pcmcia(fdc_p fdc, u_int8_t v) 304 { 305 bus_space_write_1(fdc->portt, fdc->porth, FDCTL+fdc->port_off, v); 306 } 307 #endif 308 309 #if 0 310 311 static u_int8_t 312 fdin_rd(fdc_p fdc) 313 { 314 return bus_space_read_1(fdc->portt, fdc->porth, FDIN); 315 } 316 317 #endif 318 319 static d_open_t Fdopen; /* NOTE, not fdopen */ 320 static d_close_t fdclose; 321 static d_ioctl_t fdioctl; 322 static d_strategy_t fdstrategy; 323 324 #define CDEV_MAJOR 9 325 #define BDEV_MAJOR 2 326 327 static struct cdevsw fd_cdevsw = { 328 /* open */ Fdopen, 329 /* close */ fdclose, 330 /* read */ physread, 331 /* write */ physwrite, 332 /* ioctl */ fdioctl, 333 /* poll */ nopoll, 334 /* mmap */ nommap, 335 /* strategy */ fdstrategy, 336 /* name */ "fd", 337 /* maj */ CDEV_MAJOR, 338 /* dump */ nodump, 339 /* psize */ nopsize, 340 /* flags */ D_DISK, 341 /* bmaj */ BDEV_MAJOR 342 }; 343 344 static int 345 fdc_err(struct fdc_data *fdc, const char *s) 346 { 347 fdc->fdc_errs++; 348 if (s) { 349 if (fdc->fdc_errs < FDC_ERRMAX) 350 device_printf(fdc->fdc_dev, "%s", s); 351 else if (fdc->fdc_errs == FDC_ERRMAX) 352 device_printf(fdc->fdc_dev, "too many errors, not " 353 "logging any more\n"); 354 } 355 356 return FD_FAILED; 357 } 358 359 /* 360 * fd_cmd: Send a command to the chip. Takes a varargs with this structure: 361 * Unit number, 362 * # of output bytes, output bytes as ints ..., 363 * # of input bytes, input bytes as ints ... 364 */ 365 static int 366 fd_cmd(struct fdc_data *fdc, int n_out, ...) 367 { 368 u_char cmd; 369 int n_in; 370 int n; 371 va_list ap; 372 373 va_start(ap, n_out); 374 cmd = (u_char)(va_arg(ap, int)); 375 va_end(ap); 376 va_start(ap, n_out); 377 for (n = 0; n < n_out; n++) 378 { 379 if (out_fdc(fdc, va_arg(ap, int)) < 0) 380 { 381 char msg[50]; 382 snprintf(msg, sizeof(msg), 383 "cmd %x failed at out byte %d of %d\n", 384 cmd, n + 1, n_out); 385 return fdc_err(fdc, msg); 386 } 387 } 388 n_in = va_arg(ap, int); 389 for (n = 0; n < n_in; n++) 390 { 391 int *ptr = va_arg(ap, int *); 392 if (fd_in(fdc, ptr) < 0) 393 { 394 char msg[50]; 395 snprintf(msg, sizeof(msg), 396 "cmd %02x failed at in byte %d of %d\n", 397 cmd, n + 1, n_in); 398 return fdc_err(fdc, msg); 399 } 400 } 401 402 return 0; 403 } 404 405 static int 406 enable_fifo(fdc_p fdc) 407 { 408 int i, j; 409 410 if ((fdc->flags & FDC_HAS_FIFO) == 0) { 411 412 /* 413 * XXX: 414 * Cannot use fd_cmd the normal way here, since 415 * this might be an invalid command. Thus we send the 416 * first byte, and check for an early turn of data directon. 417 */ 418 419 if (out_fdc(fdc, I8207X_CONFIGURE) < 0) 420 return fdc_err(fdc, "Enable FIFO failed\n"); 421 422 /* If command is invalid, return */ 423 j = 100000; 424 while ((i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM)) 425 != NE7_RQM && j-- > 0) 426 if (i == (NE7_DIO | NE7_RQM)) { 427 fdc_reset(fdc); 428 return FD_FAILED; 429 } 430 if (j<0 || 431 fd_cmd(fdc, 3, 432 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) { 433 fdc_reset(fdc); 434 return fdc_err(fdc, "Enable FIFO failed\n"); 435 } 436 fdc->flags |= FDC_HAS_FIFO; 437 return 0; 438 } 439 if (fd_cmd(fdc, 4, 440 I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) 441 return fdc_err(fdc, "Re-enable FIFO failed\n"); 442 return 0; 443 } 444 445 static int 446 fd_sense_drive_status(fdc_p fdc, int *st3p) 447 { 448 int st3; 449 450 if (fd_cmd(fdc, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3)) 451 { 452 return fdc_err(fdc, "Sense Drive Status failed\n"); 453 } 454 if (st3p) 455 *st3p = st3; 456 457 return 0; 458 } 459 460 static int 461 fd_sense_int(fdc_p fdc, int *st0p, int *cylp) 462 { 463 int cyl, st0, ret; 464 465 ret = fd_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); 466 if (ret) { 467 (void)fdc_err(fdc, 468 "sense intr err reading stat reg 0\n"); 469 return ret; 470 } 471 472 if (st0p) 473 *st0p = st0; 474 475 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { 476 /* 477 * There doesn't seem to have been an interrupt. 478 */ 479 return FD_NOT_VALID; 480 } 481 482 if (fd_in(fdc, &cyl) < 0) { 483 return fdc_err(fdc, "can't get cyl num\n"); 484 } 485 486 if (cylp) 487 *cylp = cyl; 488 489 return 0; 490 } 491 492 493 static int 494 fd_read_status(fdc_p fdc, int fdsu) 495 { 496 int i, ret; 497 498 for (i = 0; i < 7; i++) { 499 /* 500 * XXX types are poorly chosen. Only bytes can by read 501 * from the hardware, but fdc->status[] wants u_ints and 502 * fd_in() gives ints. 503 */ 504 int status; 505 506 ret = fd_in(fdc, &status); 507 fdc->status[i] = status; 508 if (ret != 0) 509 break; 510 } 511 512 if (ret == 0) 513 fdc->flags |= FDC_STAT_VALID; 514 else 515 fdc->flags &= ~FDC_STAT_VALID; 516 517 return ret; 518 } 519 520 /****************************************************************************/ 521 /* autoconfiguration stuff */ 522 /****************************************************************************/ 523 524 static int 525 fdc_alloc_resources(struct fdc_data *fdc) 526 { 527 device_t dev; 528 int ispnp, ispcmcia; 529 530 dev = fdc->fdc_dev; 531 ispnp = (fdc->flags & FDC_ISPNP) != 0; 532 ispcmcia = (fdc->flags & FDC_ISPCMCIA) != 0; 533 fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0; 534 fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0; 535 536 /* 537 * On standard ISA, we don't just use an 8 port range 538 * (e.g. 0x3f0-0x3f7) since that covers an IDE control 539 * register at 0x3f6. 540 * 541 * Isn't PC hardware wonderful. 542 * 543 * The Y-E Data PCMCIA FDC doesn't have this problem, it 544 * uses the register with offset 6 for pseudo-DMA, and the 545 * one with offset 7 as control register. 546 */ 547 fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT, 548 &fdc->rid_ioport, 0ul, ~0ul, 549 ispcmcia ? 8 : (ispnp ? 1 : 6), 550 RF_ACTIVE); 551 if (fdc->res_ioport == 0) { 552 device_printf(dev, "cannot reserve I/O port range\n"); 553 return ENXIO; 554 } 555 fdc->portt = rman_get_bustag(fdc->res_ioport); 556 fdc->porth = rman_get_bushandle(fdc->res_ioport); 557 558 if (!ispcmcia) { 559 /* 560 * Some BIOSen report the device at 0x3f2-0x3f5,0x3f7 561 * and some at 0x3f0-0x3f5,0x3f7. We detect the former 562 * by checking the size and adjust the port address 563 * accordingly. 564 */ 565 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 0) == 4) 566 fdc->port_off = -2; 567 568 /* 569 * Register the control port range as rid 1 if it 570 * isn't there already. Most PnP BIOSen will have 571 * already done this but non-PnP configurations don't. 572 * 573 * And some (!!) report 0x3f2-0x3f5 and completely 574 * leave out the control register! It seems that some 575 * non-antique controller chips have a different 576 * method of programming the transfer speed which 577 * doesn't require the control register, but it's 578 * mighty bogus as the chip still responds to the 579 * address for the control register. 580 */ 581 if (bus_get_resource_count(dev, SYS_RES_IOPORT, 1) == 0) { 582 u_long ctlstart; 583 584 /* Find the control port, usually 0x3f7 */ 585 ctlstart = rman_get_start(fdc->res_ioport) + 586 fdc->port_off + 7; 587 588 bus_set_resource(dev, SYS_RES_IOPORT, 1, ctlstart, 1); 589 } 590 591 /* 592 * Now (finally!) allocate the control port. 593 */ 594 fdc->rid_ctl = 1; 595 fdc->res_ctl = bus_alloc_resource(dev, SYS_RES_IOPORT, 596 &fdc->rid_ctl, 597 0ul, ~0ul, 1, RF_ACTIVE); 598 if (fdc->res_ctl == 0) { 599 device_printf(dev, 600 "cannot reserve control I/O port range\n"); 601 return ENXIO; 602 } 603 fdc->ctlt = rman_get_bustag(fdc->res_ctl); 604 fdc->ctlh = rman_get_bushandle(fdc->res_ctl); 605 } 606 607 fdc->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ, 608 &fdc->rid_irq, 0ul, ~0ul, 1, 609 RF_ACTIVE); 610 if (fdc->res_irq == 0) { 611 device_printf(dev, "cannot reserve interrupt line\n"); 612 return ENXIO; 613 } 614 615 if ((fdc->flags & FDC_NODMA) == 0) { 616 fdc->res_drq = bus_alloc_resource(dev, SYS_RES_DRQ, 617 &fdc->rid_drq, 0ul, ~0ul, 1, 618 RF_ACTIVE); 619 if (fdc->res_drq == 0) { 620 device_printf(dev, "cannot reserve DMA request line\n"); 621 return ENXIO; 622 } 623 fdc->dmachan = fdc->res_drq->r_start; 624 } 625 626 return 0; 627 } 628 629 static void 630 fdc_release_resources(struct fdc_data *fdc) 631 { 632 device_t dev; 633 634 dev = fdc->fdc_dev; 635 if (fdc->res_irq != 0) { 636 bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 637 fdc->res_irq); 638 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 639 fdc->res_irq); 640 } 641 if (fdc->res_ctl != 0) { 642 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 643 fdc->res_ctl); 644 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 645 fdc->res_ctl); 646 } 647 if (fdc->res_ioport != 0) { 648 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 649 fdc->res_ioport); 650 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 651 fdc->res_ioport); 652 } 653 if (fdc->res_drq != 0) { 654 bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 655 fdc->res_drq); 656 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 657 fdc->res_drq); 658 } 659 } 660 661 /****************************************************************************/ 662 /* autoconfiguration stuff */ 663 /****************************************************************************/ 664 665 static struct isa_pnp_id fdc_ids[] = { 666 {0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */ 667 {0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */ 668 {0} 669 }; 670 671 static int 672 fdc_read_ivar(device_t dev, device_t child, int which, uintptr_t *result) 673 { 674 struct fdc_ivars *ivars = device_get_ivars(child); 675 676 switch (which) { 677 case FDC_IVAR_FDUNIT: 678 *result = ivars->fdunit; 679 break; 680 default: 681 return ENOENT; 682 } 683 return 0; 684 } 685 686 /* 687 * fdc controller section. 688 */ 689 static int 690 fdc_probe(device_t dev) 691 { 692 int error, ic_type; 693 struct fdc_data *fdc; 694 695 fdc = device_get_softc(dev); 696 bzero(fdc, sizeof *fdc); 697 fdc->fdc_dev = dev; 698 fdc->fdctl_wr = fdctl_wr_isa; 699 700 /* Check pnp ids */ 701 error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids); 702 if (error == ENXIO) 703 return ENXIO; 704 if (error == 0) 705 fdc->flags |= FDC_ISPNP; 706 707 /* Attempt to allocate our resources for the duration of the probe */ 708 error = fdc_alloc_resources(fdc); 709 if (error) 710 goto out; 711 712 /* First - lets reset the floppy controller */ 713 fdout_wr(fdc, 0); 714 DELAY(100); 715 fdout_wr(fdc, FDO_FRST); 716 717 /* see if it can handle a command */ 718 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 719 NE7_SPEC_2(2, 0), 0)) { 720 error = ENXIO; 721 goto out; 722 } 723 724 if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) { 725 ic_type = (u_char)ic_type; 726 switch (ic_type) { 727 case 0x80: 728 device_set_desc(dev, "NEC 765 or clone"); 729 fdc->fdct = FDC_NE765; 730 break; 731 case 0x81: 732 device_set_desc(dev, "Intel 82077 or clone"); 733 fdc->fdct = FDC_I82077; 734 break; 735 case 0x90: 736 device_set_desc(dev, "NEC 72065B or clone"); 737 fdc->fdct = FDC_NE72065; 738 break; 739 default: 740 device_set_desc(dev, "generic floppy controller"); 741 fdc->fdct = FDC_UNKNOWN; 742 break; 743 } 744 } 745 746 out: 747 fdc_release_resources(fdc); 748 return (error); 749 } 750 751 #if NCARD > 0 752 753 static int 754 fdc_pccard_probe(device_t dev) 755 { 756 int error; 757 struct fdc_data *fdc; 758 759 fdc = device_get_softc(dev); 760 bzero(fdc, sizeof *fdc); 761 fdc->fdc_dev = dev; 762 fdc->fdctl_wr = fdctl_wr_pcmcia; 763 764 fdc->flags |= FDC_ISPCMCIA | FDC_NODMA; 765 766 /* Attempt to allocate our resources for the duration of the probe */ 767 error = fdc_alloc_resources(fdc); 768 if (error) 769 goto out; 770 771 /* First - lets reset the floppy controller */ 772 fdout_wr(fdc, 0); 773 DELAY(100); 774 fdout_wr(fdc, FDO_FRST); 775 776 /* see if it can handle a command */ 777 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 778 NE7_SPEC_2(2, 0), 0)) { 779 error = ENXIO; 780 goto out; 781 } 782 783 device_set_desc(dev, "Y-E Data PCMCIA floppy"); 784 fdc->fdct = FDC_NE765; 785 786 out: 787 fdc_release_resources(fdc); 788 return (error); 789 } 790 791 static int 792 fdc_pccard_detach(device_t dev) 793 { 794 struct fdc_data *fdc; 795 int error; 796 797 fdc = device_get_softc(dev); 798 799 /* have our children detached first */ 800 if ((error = bus_generic_detach(dev))) 801 return (error); 802 803 if ((fdc->flags & FDC_ATTACHED) == 0) { 804 device_printf(dev, "already unloaded\n"); 805 return (0); 806 } 807 fdc->flags &= ~FDC_ATTACHED; 808 809 BUS_TEARDOWN_INTR(device_get_parent(dev), dev, fdc->res_irq, 810 fdc->fdc_intr); 811 fdc_release_resources(fdc); 812 device_printf(dev, "unload\n"); 813 return (0); 814 } 815 816 #endif /* NCARD > 0 */ 817 818 /* 819 * Add a child device to the fdc controller. It will then be probed etc. 820 */ 821 static void 822 fdc_add_child(device_t dev, const char *name, int unit) 823 { 824 int disabled; 825 struct fdc_ivars *ivar; 826 device_t child; 827 828 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT); 829 if (ivar == NULL) 830 return; 831 bzero(ivar, sizeof *ivar); 832 if (resource_int_value(name, unit, "drive", &ivar->fdunit) != 0) 833 ivar->fdunit = 0; 834 child = device_add_child(dev, name, unit); 835 if (child == NULL) 836 return; 837 device_set_ivars(child, ivar); 838 if (resource_int_value(name, unit, "disabled", &disabled) == 0 839 && disabled != 0) 840 device_disable(child); 841 } 842 843 static int 844 fdc_attach(device_t dev) 845 { 846 struct fdc_data *fdc; 847 int i, error; 848 849 fdc = device_get_softc(dev); 850 error = fdc_alloc_resources(fdc); 851 if (error) { 852 device_printf(dev, "cannot re-aquire resources\n"); 853 return error; 854 } 855 error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq, 856 INTR_TYPE_BIO, fdc_intr, fdc, &fdc->fdc_intr); 857 if (error) { 858 device_printf(dev, "cannot setup interrupt\n"); 859 return error; 860 } 861 fdc->fdcu = device_get_unit(dev); 862 fdc->flags |= FDC_ATTACHED; 863 864 if ((fdc->flags & FDC_NODMA) == 0) { 865 /* Acquire the DMA channel forever, The driver will do the rest */ 866 /* XXX should integrate with rman */ 867 isa_dma_acquire(fdc->dmachan); 868 isa_dmainit(fdc->dmachan, 128 << 3 /* XXX max secsize */); 869 } 870 fdc->state = DEVIDLE; 871 872 /* reset controller, turn motor off, clear fdout mirror reg */ 873 fdout_wr(fdc, ((fdc->fdout = 0))); 874 bioq_init(&fdc->head); 875 876 /* 877 * Probe and attach any children. We should probably detect 878 * devices from the BIOS unless overridden. 879 */ 880 for (i = resource_query_string(-1, "at", device_get_nameunit(dev)); 881 i != -1; 882 i = resource_query_string(i, "at", device_get_nameunit(dev))) 883 fdc_add_child(dev, resource_query_name(i), 884 resource_query_unit(i)); 885 886 return (bus_generic_attach(dev)); 887 } 888 889 static int 890 fdc_print_child(device_t me, device_t child) 891 { 892 int retval = 0; 893 894 retval += bus_print_child_header(me, child); 895 retval += printf(" on %s drive %d\n", device_get_nameunit(me), 896 fdc_get_fdunit(child)); 897 898 return (retval); 899 } 900 901 static device_method_t fdc_methods[] = { 902 /* Device interface */ 903 DEVMETHOD(device_probe, fdc_probe), 904 DEVMETHOD(device_attach, fdc_attach), 905 DEVMETHOD(device_detach, bus_generic_detach), 906 DEVMETHOD(device_shutdown, bus_generic_shutdown), 907 DEVMETHOD(device_suspend, bus_generic_suspend), 908 DEVMETHOD(device_resume, bus_generic_resume), 909 910 /* Bus interface */ 911 DEVMETHOD(bus_print_child, fdc_print_child), 912 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 913 /* Our children never use any other bus interface methods. */ 914 915 { 0, 0 } 916 }; 917 918 static driver_t fdc_driver = { 919 "fdc", 920 fdc_methods, 921 sizeof(struct fdc_data) 922 }; 923 924 DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0); 925 926 #if NCARD > 0 927 928 static device_method_t fdc_pccard_methods[] = { 929 /* Device interface */ 930 DEVMETHOD(device_probe, fdc_pccard_probe), 931 DEVMETHOD(device_attach, fdc_attach), 932 DEVMETHOD(device_detach, fdc_pccard_detach), 933 DEVMETHOD(device_shutdown, bus_generic_shutdown), 934 DEVMETHOD(device_suspend, bus_generic_suspend), 935 DEVMETHOD(device_resume, bus_generic_resume), 936 937 /* Bus interface */ 938 DEVMETHOD(bus_print_child, fdc_print_child), 939 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 940 /* Our children never use any other bus interface methods. */ 941 942 { 0, 0 } 943 }; 944 945 static driver_t fdc_pccard_driver = { 946 "fdc", 947 fdc_pccard_methods, 948 sizeof(struct fdc_data) 949 }; 950 951 DRIVER_MODULE(fdc, pccard, fdc_pccard_driver, fdc_devclass, 0, 0); 952 953 #endif /* NCARD > 0 */ 954 955 #ifdef DEVFS 956 static void fd_clone __P((void *arg, char *name, int namelen, dev_t *dev)); 957 958 static struct { 959 char *match; 960 int minor; 961 int link; 962 } fd_suffix[] = { 963 { "a", 0, 1 }, 964 { "b", 0, 1 }, 965 { "c", 0, 1 }, 966 { "d", 0, 1 }, 967 { "e", 0, 1 }, 968 { "f", 0, 1 }, 969 { "g", 0, 1 }, 970 { "h", 0, 1 }, 971 { ".1720", 1, 0 }, 972 { ".1480", 2, 0 }, 973 { ".1440", 3, 0 }, 974 { ".1200", 4, 0 }, 975 { ".820", 5, 0 }, 976 { ".800", 6, 0 }, 977 { ".720", 7, 0 }, 978 { ".360", 8, 0 }, 979 { ".640", 9, 0 }, 980 { ".1232", 10, 0 }, 981 { 0, 0 } 982 }; 983 static void 984 fd_clone(arg, name, namelen, dev) 985 void *arg; 986 char *name; 987 int namelen; 988 dev_t *dev; 989 { 990 int u, d, i; 991 char *n; 992 dev_t pdev; 993 994 if (*dev != NODEV) 995 return; 996 if (devfs_stdclone(name, &n, "fd", &u) != 2) 997 return; 998 for (i = 0; ; i++) { 999 if (fd_suffix[i].match == NULL) 1000 return; 1001 if (strcmp(n, fd_suffix[i].match)) 1002 continue; 1003 d = fd_suffix[i].minor; 1004 break; 1005 } 1006 if (fd_suffix[i].link == 0) { 1007 *dev = make_dev(&fd_cdevsw, (u << 6) + d, 1008 UID_ROOT, GID_OPERATOR, 0640, name); 1009 } else { 1010 pdev = makedev(fd_cdevsw.d_maj, (u << 6) + d); 1011 *dev = make_dev_alias(pdev, name); 1012 } 1013 } 1014 #endif 1015 1016 /******************************************************************/ 1017 /* 1018 * devices attached to the controller section. 1019 */ 1020 static int 1021 fd_probe(device_t dev) 1022 { 1023 int i; 1024 u_int fdt, st0, st3; 1025 struct fd_data *fd; 1026 struct fdc_data *fdc; 1027 fdsu_t fdsu; 1028 static int fd_fifo = 0; 1029 1030 fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */ 1031 fd = device_get_softc(dev); 1032 fdc = device_get_softc(device_get_parent(dev)); 1033 1034 bzero(fd, sizeof *fd); 1035 fd->dev = dev; 1036 fd->fdc = fdc; 1037 fd->fdsu = fdsu; 1038 fd->fdu = device_get_unit(dev); 1039 1040 #ifdef __i386__ 1041 /* look up what bios thinks we have */ 1042 switch (fd->fdu) { 1043 case 0: 1044 if ((fdc->flags & FDC_ISPCMCIA)) 1045 fdt = RTCFDT_144M; 1046 else if (device_get_flags(fdc->fdc_dev) & FDC_PRETEND_D0) 1047 fdt = RTCFDT_144M | RTCFDT_144M_PRETENDED; 1048 else 1049 fdt = (rtcin(RTC_FDISKETTE) & 0xf0); 1050 break; 1051 case 1: 1052 fdt = ((rtcin(RTC_FDISKETTE) << 4) & 0xf0); 1053 break; 1054 default: 1055 fdt = RTCFDT_NONE; 1056 break; 1057 } 1058 #else 1059 fdt = RTCFDT_144M; /* XXX probably */ 1060 #endif 1061 1062 /* is there a unit? */ 1063 if (fdt == RTCFDT_NONE) 1064 return (ENXIO); 1065 1066 /* select it */ 1067 set_motor(fdc, fdsu, TURNON); 1068 DELAY(1000000); /* 1 sec */ 1069 1070 /* XXX This doesn't work before the first set_motor() */ 1071 if (fd_fifo == 0 && fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN 1072 && (device_get_flags(fdc->fdc_dev) & FDC_NO_FIFO) == 0 1073 && enable_fifo(fdc) == 0) { 1074 device_printf(device_get_parent(dev), 1075 "FIFO enabled, %d bytes threshold\n", fifo_threshold); 1076 } 1077 fd_fifo = 1; 1078 1079 if ((fd_cmd(fdc, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) 1080 && (st3 & NE7_ST3_T0)) { 1081 /* if at track 0, first seek inwards */ 1082 /* seek some steps: */ 1083 fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0); 1084 DELAY(300000); /* ...wait a moment... */ 1085 fd_sense_int(fdc, 0, 0); /* make ctrlr happy */ 1086 } 1087 1088 /* If we're at track 0 first seek inwards. */ 1089 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) { 1090 /* Seek some steps... */ 1091 if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 1092 /* ...wait a moment... */ 1093 DELAY(300000); 1094 /* make ctrlr happy: */ 1095 fd_sense_int(fdc, 0, 0); 1096 } 1097 } 1098 1099 for (i = 0; i < 2; i++) { 1100 /* 1101 * we must recalibrate twice, just in case the 1102 * heads have been beyond cylinder 76, since most 1103 * FDCs still barf when attempting to recalibrate 1104 * more than 77 steps 1105 */ 1106 /* go back to 0: */ 1107 if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1108 /* a second being enough for full stroke seek*/ 1109 DELAY(i == 0 ? 1000000 : 300000); 1110 1111 /* anything responding? */ 1112 if (fd_sense_int(fdc, &st0, 0) == 0 && 1113 (st0 & NE7_ST0_EC) == 0) 1114 break; /* already probed succesfully */ 1115 } 1116 } 1117 1118 set_motor(fdc, fdsu, TURNOFF); 1119 1120 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */ 1121 return (ENXIO); 1122 1123 fd->track = FD_NO_TRACK; 1124 fd->fdc = fdc; 1125 fd->fdsu = fdsu; 1126 fd->options = 0; 1127 callout_handle_init(&fd->toffhandle); 1128 callout_handle_init(&fd->tohandle); 1129 1130 switch (fdt) { 1131 case RTCFDT_12M: 1132 device_set_desc(dev, "1200-KB 5.25\" drive"); 1133 fd->type = FD_1200; 1134 break; 1135 case RTCFDT_144M | RTCFDT_144M_PRETENDED: 1136 device_set_desc(dev, "config-pretended 1440-MB 3.5\" drive"); 1137 fdt = RTCFDT_144M; 1138 fd->type = FD_1440; 1139 case RTCFDT_144M: 1140 device_set_desc(dev, "1440-KB 3.5\" drive"); 1141 fd->type = FD_1440; 1142 break; 1143 case RTCFDT_288M: 1144 case RTCFDT_288M_1: 1145 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 1146 fd->type = FD_1440; 1147 break; 1148 case RTCFDT_360K: 1149 device_set_desc(dev, "360-KB 5.25\" drive"); 1150 fd->type = FD_360; 1151 break; 1152 case RTCFDT_720K: 1153 printf("720-KB 3.5\" drive"); 1154 fd->type = FD_720; 1155 break; 1156 default: 1157 return (ENXIO); 1158 } 1159 return (0); 1160 } 1161 1162 static int 1163 fd_attach(device_t dev) 1164 { 1165 struct fd_data *fd; 1166 1167 fd = device_get_softc(dev); 1168 1169 #ifndef DEVFS 1170 { 1171 static int cdevsw_add_done = 0; 1172 if (!cdevsw_add_done) { 1173 cdevsw_add(&fd_cdevsw); /* XXX */ 1174 cdevsw_add_done++; 1175 } 1176 } 1177 #else 1178 EVENTHANDLER_REGISTER(devfs_clone, fd_clone, 0, 1000); 1179 #endif 1180 make_dev(&fd_cdevsw, (fd->fdu << 6), 1181 UID_ROOT, GID_OPERATOR, 0640, "fd%d", fd->fdu); 1182 1183 /* 1184 * Export the drive to the devstat interface. 1185 */ 1186 devstat_add_entry(&fd->device_stats, device_get_name(dev), 1187 device_get_unit(dev), 512, DEVSTAT_NO_ORDERED_TAGS, 1188 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER, 1189 DEVSTAT_PRIORITY_FD); 1190 return (0); 1191 } 1192 1193 static int 1194 fd_detach(device_t dev) 1195 { 1196 struct fd_data *fd; 1197 1198 fd = device_get_softc(dev); 1199 untimeout(fd_turnoff, fd, fd->toffhandle); 1200 1201 return (0); 1202 } 1203 1204 static device_method_t fd_methods[] = { 1205 /* Device interface */ 1206 DEVMETHOD(device_probe, fd_probe), 1207 DEVMETHOD(device_attach, fd_attach), 1208 DEVMETHOD(device_detach, fd_detach), 1209 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1210 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 1211 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 1212 1213 { 0, 0 } 1214 }; 1215 1216 static driver_t fd_driver = { 1217 "fd", 1218 fd_methods, 1219 sizeof(struct fd_data) 1220 }; 1221 1222 DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, 0, 0); 1223 1224 /****************************************************************************/ 1225 /* motor control stuff */ 1226 /* remember to not deselect the drive we're working on */ 1227 /****************************************************************************/ 1228 static void 1229 set_motor(struct fdc_data *fdc, int fdsu, int turnon) 1230 { 1231 int fdout = fdc->fdout; 1232 int needspecify = 0; 1233 1234 if(turnon) { 1235 fdout &= ~FDO_FDSEL; 1236 fdout |= (FDO_MOEN0 << fdsu) + fdsu; 1237 } else 1238 fdout &= ~(FDO_MOEN0 << fdsu); 1239 1240 if(!turnon 1241 && (fdout & (FDO_MOEN0+FDO_MOEN1+FDO_MOEN2+FDO_MOEN3)) == 0) 1242 /* gonna turn off the last drive, put FDC to bed */ 1243 fdout &= ~ (FDO_FRST|FDO_FDMAEN); 1244 else { 1245 /* make sure controller is selected and specified */ 1246 if((fdout & (FDO_FRST|FDO_FDMAEN)) == 0) 1247 needspecify = 1; 1248 fdout |= (FDO_FRST|FDO_FDMAEN); 1249 } 1250 1251 fdout_wr(fdc, fdout); 1252 fdc->fdout = fdout; 1253 TRACE1("[0x%x->FDOUT]", fdout); 1254 1255 if (needspecify) { 1256 /* 1257 * XXX 1258 * special case: since we have just woken up the FDC 1259 * from its sleep, we silently assume the command will 1260 * be accepted, and do not test for a timeout 1261 */ 1262 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1263 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1264 0); 1265 if (fdc->flags & FDC_HAS_FIFO) 1266 (void) enable_fifo(fdc); 1267 } 1268 } 1269 1270 static void 1271 fd_turnoff(void *xfd) 1272 { 1273 int s; 1274 fd_p fd = xfd; 1275 1276 TRACE1("[fd%d: turnoff]", fd->fdu); 1277 1278 s = splbio(); 1279 /* 1280 * Don't turn off the motor yet if the drive is active. 1281 * 1282 * If we got here, this could only mean we missed an interrupt. 1283 * This can e. g. happen on the Y-E Date PCMCIA floppy controller 1284 * after a controller reset. Just schedule a pseudo-interrupt 1285 * so the state machine gets re-entered. 1286 */ 1287 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) { 1288 fdc_intr(fd->fdc); 1289 splx(s); 1290 return; 1291 } 1292 1293 fd->flags &= ~FD_MOTOR; 1294 set_motor(fd->fdc, fd->fdsu, TURNOFF); 1295 splx(s); 1296 } 1297 1298 static void 1299 fd_motor_on(void *xfd) 1300 { 1301 int s; 1302 fd_p fd = xfd; 1303 1304 s = splbio(); 1305 fd->flags &= ~FD_MOTOR_WAIT; 1306 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT)) 1307 { 1308 fdc_intr(fd->fdc); 1309 } 1310 splx(s); 1311 } 1312 1313 static void 1314 fd_turnon(fd_p fd) 1315 { 1316 if(!(fd->flags & FD_MOTOR)) 1317 { 1318 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT); 1319 set_motor(fd->fdc, fd->fdsu, TURNON); 1320 timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */ 1321 } 1322 } 1323 1324 static void 1325 fdc_reset(fdc_p fdc) 1326 { 1327 /* Try a reset, keep motor on */ 1328 fdout_wr(fdc, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1329 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1330 DELAY(100); 1331 /* enable FDC, but defer interrupts a moment */ 1332 fdout_wr(fdc, fdc->fdout & ~FDO_FDMAEN); 1333 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN); 1334 DELAY(100); 1335 fdout_wr(fdc, fdc->fdout); 1336 TRACE1("[0x%x->FDOUT]", fdc->fdout); 1337 1338 /* XXX after a reset, silently believe the FDC will accept commands */ 1339 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1340 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1341 0); 1342 if (fdc->flags & FDC_HAS_FIFO) 1343 (void) enable_fifo(fdc); 1344 } 1345 1346 /****************************************************************************/ 1347 /* fdc in/out */ 1348 /****************************************************************************/ 1349 int 1350 in_fdc(struct fdc_data *fdc) 1351 { 1352 int i, j = 100000; 1353 while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) 1354 != (NE7_DIO|NE7_RQM) && j-- > 0) 1355 if (i == NE7_RQM) 1356 return fdc_err(fdc, "ready for output in input\n"); 1357 if (j <= 0) 1358 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1359 #ifdef FDC_DEBUG 1360 i = fddata_rd(fdc); 1361 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1362 return(i); 1363 #else /* !FDC_DEBUG */ 1364 return fddata_rd(fdc); 1365 #endif /* FDC_DEBUG */ 1366 } 1367 1368 /* 1369 * fd_in: Like in_fdc, but allows you to see if it worked. 1370 */ 1371 static int 1372 fd_in(struct fdc_data *fdc, int *ptr) 1373 { 1374 int i, j = 100000; 1375 while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) 1376 != (NE7_DIO|NE7_RQM) && j-- > 0) 1377 if (i == NE7_RQM) 1378 return fdc_err(fdc, "ready for output in input\n"); 1379 if (j <= 0) 1380 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1381 #ifdef FDC_DEBUG 1382 i = fddata_rd(fdc); 1383 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1384 *ptr = i; 1385 return 0; 1386 #else /* !FDC_DEBUG */ 1387 i = fddata_rd(fdc); 1388 if (ptr) 1389 *ptr = i; 1390 return 0; 1391 #endif /* FDC_DEBUG */ 1392 } 1393 1394 int 1395 out_fdc(struct fdc_data *fdc, int x) 1396 { 1397 int i; 1398 1399 /* Check that the direction bit is set */ 1400 i = 100000; 1401 while ((fdsts_rd(fdc) & NE7_DIO) && i-- > 0); 1402 if (i <= 0) return fdc_err(fdc, "direction bit not set\n"); 1403 1404 /* Check that the floppy controller is ready for a command */ 1405 i = 100000; 1406 while ((fdsts_rd(fdc) & NE7_RQM) == 0 && i-- > 0); 1407 if (i <= 0) 1408 return fdc_err(fdc, bootverbose? "output ready timeout\n": 0); 1409 1410 /* Send the command and return */ 1411 fddata_wr(fdc, x); 1412 TRACE1("[0x%x->FDDATA]", x); 1413 return (0); 1414 } 1415 1416 /****************************************************************************/ 1417 /* fdopen/fdclose */ 1418 /****************************************************************************/ 1419 int 1420 Fdopen(dev_t dev, int flags, int mode, struct proc *p) 1421 { 1422 fdu_t fdu = FDUNIT(minor(dev)); 1423 int type = FDTYPE(minor(dev)); 1424 fd_p fd; 1425 fdc_p fdc; 1426 1427 /* check bounds */ 1428 if ((fd = devclass_get_softc(fd_devclass, fdu)) == 0) 1429 return (ENXIO); 1430 fdc = fd->fdc; 1431 if ((fdc == NULL) || (fd->type == NO_TYPE)) 1432 return (ENXIO); 1433 if (type > NUMDENS) 1434 return (ENXIO); 1435 if (type == 0) 1436 type = fd->type; 1437 else { 1438 /* 1439 * For each type of basic drive, make sure we are trying 1440 * to open a type it can do, 1441 */ 1442 if (type != fd->type) { 1443 switch (fd->type) { 1444 case FD_360: 1445 return (ENXIO); 1446 case FD_720: 1447 if ( type != FD_820 1448 && type != FD_800 1449 && type != FD_640 1450 ) 1451 return (ENXIO); 1452 break; 1453 case FD_1200: 1454 switch (type) { 1455 case FD_1480: 1456 type = FD_1480in5_25; 1457 break; 1458 case FD_1440: 1459 type = FD_1440in5_25; 1460 break; 1461 case FD_1232: 1462 break; 1463 case FD_820: 1464 type = FD_820in5_25; 1465 break; 1466 case FD_800: 1467 type = FD_800in5_25; 1468 break; 1469 case FD_720: 1470 type = FD_720in5_25; 1471 break; 1472 case FD_640: 1473 type = FD_640in5_25; 1474 break; 1475 case FD_360: 1476 type = FD_360in5_25; 1477 break; 1478 default: 1479 return(ENXIO); 1480 } 1481 break; 1482 case FD_1440: 1483 if ( type != FD_1720 1484 && type != FD_1480 1485 && type != FD_1200 1486 && type != FD_820 1487 && type != FD_800 1488 && type != FD_720 1489 && type != FD_640 1490 ) 1491 return(ENXIO); 1492 break; 1493 } 1494 } 1495 } 1496 fd->ft = fd_types + type - 1; 1497 fd->flags |= FD_OPEN; 1498 1499 return 0; 1500 } 1501 1502 int 1503 fdclose(dev_t dev, int flags, int mode, struct proc *p) 1504 { 1505 fdu_t fdu = FDUNIT(minor(dev)); 1506 struct fd_data *fd; 1507 1508 fd = devclass_get_softc(fd_devclass, fdu); 1509 fd->flags &= ~FD_OPEN; 1510 fd->options &= ~FDOPT_NORETRY; 1511 1512 return (0); 1513 } 1514 1515 /****************************************************************************/ 1516 /* fdstrategy */ 1517 /****************************************************************************/ 1518 void 1519 fdstrategy(struct bio *bp) 1520 { 1521 unsigned nblocks, blknum, cando; 1522 int s; 1523 fdu_t fdu; 1524 fdc_p fdc; 1525 fd_p fd; 1526 size_t fdblk; 1527 1528 fdu = FDUNIT(minor(bp->bio_dev)); 1529 fd = devclass_get_softc(fd_devclass, fdu); 1530 if (fd == 0) 1531 panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)", 1532 (u_long)major(bp->bio_dev), (u_long)minor(bp->bio_dev)); 1533 fdc = fd->fdc; 1534 if (fd->type == NO_TYPE) { 1535 bp->bio_error = ENXIO; 1536 bp->bio_flags |= BIO_ERROR; 1537 goto bad; 1538 }; 1539 1540 fdblk = 128 << (fd->ft->secsize); 1541 if (!(bp->bio_cmd & BIO_FORMAT)) { 1542 if (bp->bio_blkno < 0) { 1543 printf( 1544 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n", 1545 fdu, (u_long)bp->bio_blkno, bp->bio_bcount); 1546 bp->bio_error = EINVAL; 1547 bp->bio_flags |= BIO_ERROR; 1548 goto bad; 1549 } 1550 if ((bp->bio_bcount % fdblk) != 0) { 1551 bp->bio_error = EINVAL; 1552 bp->bio_flags |= BIO_ERROR; 1553 goto bad; 1554 } 1555 } 1556 1557 /* 1558 * Set up block calculations. 1559 */ 1560 if (bp->bio_blkno > 20000000) { 1561 /* 1562 * Reject unreasonably high block number, prevent the 1563 * multiplication below from overflowing. 1564 */ 1565 bp->bio_error = EINVAL; 1566 bp->bio_flags |= BIO_ERROR; 1567 goto bad; 1568 } 1569 blknum = (unsigned) bp->bio_blkno * DEV_BSIZE/fdblk; 1570 nblocks = fd->ft->size; 1571 bp->bio_resid = 0; 1572 if (blknum + (bp->bio_bcount / fdblk) > nblocks) { 1573 if (blknum <= nblocks) { 1574 cando = (nblocks - blknum) * fdblk; 1575 bp->bio_resid = bp->bio_bcount - cando; 1576 if (cando == 0) 1577 goto bad; /* not actually bad but EOF */ 1578 } else { 1579 bp->bio_error = EINVAL; 1580 bp->bio_flags |= BIO_ERROR; 1581 goto bad; 1582 } 1583 } 1584 bp->bio_pblkno = bp->bio_blkno; 1585 s = splbio(); 1586 bioqdisksort(&fdc->head, bp); 1587 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */ 1588 1589 /* Tell devstat we are starting on the transaction */ 1590 devstat_start_transaction(&fd->device_stats); 1591 device_busy(fd->dev); 1592 1593 fdstart(fdc); 1594 splx(s); 1595 return; 1596 1597 bad: 1598 biodone(bp); 1599 } 1600 1601 /***************************************************************\ 1602 * fdstart * 1603 * We have just queued something.. if the controller is not busy * 1604 * then simulate the case where it has just finished a command * 1605 * So that it (the interrupt routine) looks on the queue for more* 1606 * work to do and picks up what we just added. * 1607 * If the controller is already busy, we need do nothing, as it * 1608 * will pick up our work when the present work completes * 1609 \***************************************************************/ 1610 static void 1611 fdstart(struct fdc_data *fdc) 1612 { 1613 int s; 1614 1615 s = splbio(); 1616 if(fdc->state == DEVIDLE) 1617 { 1618 fdc_intr(fdc); 1619 } 1620 splx(s); 1621 } 1622 1623 static void 1624 fd_iotimeout(void *xfdc) 1625 { 1626 fdc_p fdc; 1627 int s; 1628 1629 fdc = xfdc; 1630 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); 1631 1632 /* 1633 * Due to IBM's brain-dead design, the FDC has a faked ready 1634 * signal, hardwired to ready == true. Thus, any command 1635 * issued if there's no diskette in the drive will _never_ 1636 * complete, and must be aborted by resetting the FDC. 1637 * Many thanks, Big Blue! 1638 * The FDC must not be reset directly, since that would 1639 * interfere with the state machine. Instead, pretend that 1640 * the command completed but was invalid. The state machine 1641 * will reset the FDC and retry once. 1642 */ 1643 s = splbio(); 1644 fdc->status[0] = NE7_ST0_IC_IV; 1645 fdc->flags &= ~FDC_STAT_VALID; 1646 fdc->state = IOTIMEDOUT; 1647 fdc_intr(fdc); 1648 splx(s); 1649 } 1650 1651 /* just ensure it has the right spl */ 1652 static void 1653 fd_pseudointr(void *xfdc) 1654 { 1655 int s; 1656 1657 s = splbio(); 1658 fdc_intr(xfdc); 1659 splx(s); 1660 } 1661 1662 /***********************************************************************\ 1663 * fdintr * 1664 * keep calling the state machine until it returns a 0 * 1665 * ALWAYS called at SPLBIO * 1666 \***********************************************************************/ 1667 static void 1668 fdc_intr(void *xfdc) 1669 { 1670 fdc_p fdc = xfdc; 1671 while(fdstate(fdc)) 1672 ; 1673 } 1674 1675 /* 1676 * magic pseudo-DMA initialization for YE FDC. Sets count and 1677 * direction 1678 */ 1679 #define SET_BCDR(fdc,wr,cnt,port) \ 1680 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port, \ 1681 ((cnt)-1) & 0xff); \ 1682 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port + 1, \ 1683 ((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))); 1684 1685 /* 1686 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy 1687 */ 1688 static int fdcpio(fdc_p fdc, long flags, caddr_t addr, u_int count) 1689 { 1690 u_char *cptr = (u_char *)addr; 1691 1692 if (flags == BIO_READ) { 1693 if (fdc->state != PIOREAD) { 1694 fdc->state = PIOREAD; 1695 return(0); 1696 }; 1697 SET_BCDR(fdc, 0, count, 0); 1698 bus_space_read_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1699 FDC_YE_DATAPORT, cptr, count); 1700 } else { 1701 bus_space_write_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1702 FDC_YE_DATAPORT, cptr, count); 1703 SET_BCDR(fdc, 0, count, 0); 1704 }; 1705 return(1); 1706 } 1707 1708 /***********************************************************************\ 1709 * The controller state machine. * 1710 * if it returns a non zero value, it should be called again immediatly * 1711 \***********************************************************************/ 1712 static int 1713 fdstate(fdc_p fdc) 1714 { 1715 int read, format, head, i, sec = 0, sectrac, st0, cyl, st3, idf; 1716 unsigned blknum = 0, b_cylinder = 0; 1717 fdu_t fdu = fdc->fdu; 1718 fd_p fd; 1719 register struct bio *bp; 1720 struct fd_formb *finfo = NULL; 1721 size_t fdblk; 1722 1723 bp = fdc->bp; 1724 if (bp == NULL) { 1725 bp = bioq_first(&fdc->head); 1726 if (bp != NULL) { 1727 bioq_remove(&fdc->head, bp); 1728 fdc->bp = bp; 1729 } 1730 } 1731 if (bp == NULL) { 1732 /***********************************************\ 1733 * nothing left for this controller to do * 1734 * Force into the IDLE state, * 1735 \***********************************************/ 1736 fdc->state = DEVIDLE; 1737 if (fdc->fd) { 1738 device_printf(fdc->fdc_dev, 1739 "unexpected valid fd pointer\n"); 1740 fdc->fd = (fd_p) 0; 1741 fdc->fdu = -1; 1742 } 1743 TRACE1("[fdc%d IDLE]", fdc->fdcu); 1744 return (0); 1745 } 1746 fdu = FDUNIT(minor(bp->bio_dev)); 1747 fd = devclass_get_softc(fd_devclass, fdu); 1748 fdblk = 128 << fd->ft->secsize; 1749 if (fdc->fd && (fd != fdc->fd)) 1750 device_printf(fd->dev, "confused fd pointers\n"); 1751 read = bp->bio_cmd == BIO_READ; 1752 if (read) 1753 idf = ISADMA_READ; 1754 else 1755 idf = ISADMA_WRITE; 1756 format = bp->bio_cmd & BIO_FORMAT; 1757 if (format) { 1758 finfo = (struct fd_formb *)bp->bio_data; 1759 fd->skip = (char *)&(finfo->fd_formb_cylno(0)) 1760 - (char *)finfo; 1761 } 1762 if (fdc->state == DOSEEK || fdc->state == SEEKCOMPLETE) { 1763 blknum = (unsigned) bp->bio_pblkno * DEV_BSIZE/fdblk + 1764 fd->skip/fdblk; 1765 b_cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 1766 } 1767 TRACE1("fd%d", fdu); 1768 TRACE1("[%s]", fdstates[fdc->state]); 1769 TRACE1("(0x%x)", fd->flags); 1770 untimeout(fd_turnoff, fd, fd->toffhandle); 1771 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 1772 switch (fdc->state) 1773 { 1774 case DEVIDLE: 1775 case FINDWORK: /* we have found new work */ 1776 fdc->retry = 0; 1777 fd->skip = 0; 1778 fdc->fd = fd; 1779 fdc->fdu = fdu; 1780 fdc->fdctl_wr(fdc, fd->ft->trans); 1781 TRACE1("[0x%x->FDCTL]", fd->ft->trans); 1782 /*******************************************************\ 1783 * If the next drive has a motor startup pending, then * 1784 * it will start up in its own good time * 1785 \*******************************************************/ 1786 if(fd->flags & FD_MOTOR_WAIT) { 1787 fdc->state = MOTORWAIT; 1788 return (0); /* come back later */ 1789 } 1790 /*******************************************************\ 1791 * Maybe if it's not starting, it SHOULD be starting * 1792 \*******************************************************/ 1793 if (!(fd->flags & FD_MOTOR)) 1794 { 1795 fdc->state = MOTORWAIT; 1796 fd_turnon(fd); 1797 return (0); 1798 } 1799 else /* at least make sure we are selected */ 1800 { 1801 set_motor(fdc, fd->fdsu, TURNON); 1802 } 1803 if (fdc->flags & FDC_NEEDS_RESET) { 1804 fdc->state = RESETCTLR; 1805 fdc->flags &= ~FDC_NEEDS_RESET; 1806 } else 1807 fdc->state = DOSEEK; 1808 break; 1809 case DOSEEK: 1810 if (b_cylinder == (unsigned)fd->track) 1811 { 1812 fdc->state = SEEKCOMPLETE; 1813 break; 1814 } 1815 if (fd_cmd(fdc, 3, NE7CMD_SEEK, 1816 fd->fdsu, b_cylinder * fd->ft->steptrac, 1817 0)) 1818 { 1819 /* 1820 * seek command not accepted, looks like 1821 * the FDC went off to the Saints... 1822 */ 1823 fdc->retry = 6; /* try a reset */ 1824 return(retrier(fdc)); 1825 } 1826 fd->track = FD_NO_TRACK; 1827 fdc->state = SEEKWAIT; 1828 return(0); /* will return later */ 1829 case SEEKWAIT: 1830 /* allow heads to settle */ 1831 timeout(fd_pseudointr, fdc, hz / 16); 1832 fdc->state = SEEKCOMPLETE; 1833 return(0); /* will return later */ 1834 case SEEKCOMPLETE : /* SEEK DONE, START DMA */ 1835 /* Make sure seek really happened*/ 1836 if(fd->track == FD_NO_TRACK) { 1837 int descyl = b_cylinder * fd->ft->steptrac; 1838 do { 1839 /* 1840 * This might be a "ready changed" interrupt, 1841 * which cannot really happen since the 1842 * RDY pin is hardwired to + 5 volts. This 1843 * generally indicates a "bouncing" intr 1844 * line, so do one of the following: 1845 * 1846 * When running on an enhanced FDC that is 1847 * known to not go stuck after responding 1848 * with INVALID, fetch all interrupt states 1849 * until seeing either an INVALID or a 1850 * real interrupt condition. 1851 * 1852 * When running on a dumb old NE765, give 1853 * up immediately. The controller will 1854 * provide up to four dummy RC interrupt 1855 * conditions right after reset (for the 1856 * corresponding four drives), so this is 1857 * our only chance to get notice that it 1858 * was not the FDC that caused the interrupt. 1859 */ 1860 if (fd_sense_int(fdc, &st0, &cyl) 1861 == FD_NOT_VALID) 1862 return 0; 1863 if(fdc->fdct == FDC_NE765 1864 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 1865 return 0; /* hope for a real intr */ 1866 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 1867 1868 if (0 == descyl) { 1869 int failed = 0; 1870 /* 1871 * seek to cyl 0 requested; make sure we are 1872 * really there 1873 */ 1874 if (fd_sense_drive_status(fdc, &st3)) 1875 failed = 1; 1876 if ((st3 & NE7_ST3_T0) == 0) { 1877 printf( 1878 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", 1879 fdu, st3, NE7_ST3BITS); 1880 failed = 1; 1881 } 1882 1883 if (failed) { 1884 if(fdc->retry < 3) 1885 fdc->retry = 3; 1886 return (retrier(fdc)); 1887 } 1888 } 1889 1890 if (cyl != descyl) { 1891 printf( 1892 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", 1893 fdu, descyl, cyl, st0); 1894 if (fdc->retry < 3) 1895 fdc->retry = 3; 1896 return (retrier(fdc)); 1897 } 1898 } 1899 1900 fd->track = b_cylinder; 1901 if (!(fdc->flags & FDC_NODMA)) 1902 isa_dmastart(idf, bp->bio_data+fd->skip, 1903 format ? bp->bio_bcount : fdblk, fdc->dmachan); 1904 sectrac = fd->ft->sectrac; 1905 sec = blknum % (sectrac * fd->ft->heads); 1906 head = sec / sectrac; 1907 sec = sec % sectrac + 1; 1908 fd->hddrv = ((head&1)<<2)+fdu; 1909 1910 if(format || !read) 1911 { 1912 /* make sure the drive is writable */ 1913 if(fd_sense_drive_status(fdc, &st3) != 0) 1914 { 1915 /* stuck controller? */ 1916 if (!(fdc->flags & FDC_NODMA)) 1917 isa_dmadone(idf, 1918 bp->bio_data + fd->skip, 1919 format ? bp->bio_bcount : fdblk, 1920 fdc->dmachan); 1921 fdc->retry = 6; /* reset the beast */ 1922 return (retrier(fdc)); 1923 } 1924 if(st3 & NE7_ST3_WP) 1925 { 1926 /* 1927 * XXX YES! this is ugly. 1928 * in order to force the current operation 1929 * to fail, we will have to fake an FDC 1930 * error - all error handling is done 1931 * by the retrier() 1932 */ 1933 fdc->status[0] = NE7_ST0_IC_AT; 1934 fdc->status[1] = NE7_ST1_NW; 1935 fdc->status[2] = 0; 1936 fdc->status[3] = fd->track; 1937 fdc->status[4] = head; 1938 fdc->status[5] = sec; 1939 fdc->retry = 8; /* break out immediately */ 1940 fdc->state = IOTIMEDOUT; /* not really... */ 1941 return (1); 1942 } 1943 } 1944 1945 if (format) { 1946 if (fdc->flags & FDC_NODMA) { 1947 /* 1948 * This seems to be necessary for 1949 * whatever obscure reason; if we omit 1950 * it, we end up filling the sector ID 1951 * fields of the newly formatted track 1952 * entirely with garbage, causing 1953 * `wrong cylinder' errors all over 1954 * the place when trying to read them 1955 * back. 1956 * 1957 * Umpf. 1958 */ 1959 SET_BCDR(fdc, 1, bp->bio_bcount, 0); 1960 1961 (void)fdcpio(fdc,bp->bio_cmd, 1962 bp->bio_data+fd->skip, 1963 bp->bio_bcount); 1964 1965 } 1966 /* formatting */ 1967 if(fd_cmd(fdc, 6, NE7CMD_FORMAT, head << 2 | fdu, 1968 finfo->fd_formb_secshift, 1969 finfo->fd_formb_nsecs, 1970 finfo->fd_formb_gaplen, 1971 finfo->fd_formb_fillbyte, 0)) { 1972 /* controller fell over */ 1973 if (!(fdc->flags & FDC_NODMA)) 1974 isa_dmadone(idf, 1975 bp->bio_data + fd->skip, 1976 format ? bp->bio_bcount : fdblk, 1977 fdc->dmachan); 1978 fdc->retry = 6; 1979 return (retrier(fdc)); 1980 } 1981 } else { 1982 if (fdc->flags & FDC_NODMA) { 1983 /* 1984 * this seems to be necessary even when 1985 * reading data 1986 */ 1987 SET_BCDR(fdc, 1, fdblk, 0); 1988 1989 /* 1990 * perform the write pseudo-DMA before 1991 * the WRITE command is sent 1992 */ 1993 if (!read) 1994 (void)fdcpio(fdc,bp->bio_cmd, 1995 bp->bio_data+fd->skip, 1996 fdblk); 1997 } 1998 if (fd_cmd(fdc, 9, 1999 (read ? NE7CMD_READ : NE7CMD_WRITE), 2000 head << 2 | fdu, /* head & unit */ 2001 fd->track, /* track */ 2002 head, 2003 sec, /* sector + 1 */ 2004 fd->ft->secsize, /* sector size */ 2005 sectrac, /* sectors/track */ 2006 fd->ft->gap, /* gap size */ 2007 fd->ft->datalen, /* data length */ 2008 0)) { 2009 /* the beast is sleeping again */ 2010 if (!(fdc->flags & FDC_NODMA)) 2011 isa_dmadone(idf, 2012 bp->bio_data + fd->skip, 2013 format ? bp->bio_bcount : fdblk, 2014 fdc->dmachan); 2015 fdc->retry = 6; 2016 return (retrier(fdc)); 2017 } 2018 } 2019 if (fdc->flags & FDC_NODMA) 2020 /* 2021 * if this is a read, then simply await interrupt 2022 * before performing PIO 2023 */ 2024 if (read && !fdcpio(fdc,bp->bio_cmd, 2025 bp->bio_data+fd->skip,fdblk)) { 2026 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 2027 return(0); /* will return later */ 2028 }; 2029 2030 /* 2031 * write (or format) operation will fall through and 2032 * await completion interrupt 2033 */ 2034 fdc->state = IOCOMPLETE; 2035 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 2036 return (0); /* will return later */ 2037 case PIOREAD: 2038 /* 2039 * actually perform the PIO read. The IOCOMPLETE case 2040 * removes the timeout for us. 2041 */ 2042 (void)fdcpio(fdc,bp->bio_cmd,bp->bio_data+fd->skip,fdblk); 2043 fdc->state = IOCOMPLETE; 2044 /* FALLTHROUGH */ 2045 case IOCOMPLETE: /* IO DONE, post-analyze */ 2046 untimeout(fd_iotimeout, fdc, fd->tohandle); 2047 2048 if (fd_read_status(fdc, fd->fdsu)) { 2049 if (!(fdc->flags & FDC_NODMA)) 2050 isa_dmadone(idf, bp->bio_data + fd->skip, 2051 format ? bp->bio_bcount : fdblk, 2052 fdc->dmachan); 2053 if (fdc->retry < 6) 2054 fdc->retry = 6; /* force a reset */ 2055 return (retrier(fdc)); 2056 } 2057 2058 fdc->state = IOTIMEDOUT; 2059 2060 /* FALLTHROUGH */ 2061 2062 case IOTIMEDOUT: 2063 if (!(fdc->flags & FDC_NODMA)) 2064 isa_dmadone(idf, bp->bio_data + fd->skip, 2065 format ? bp->bio_bcount : fdblk, fdc->dmachan); 2066 if (fdc->status[0] & NE7_ST0_IC) { 2067 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2068 && fdc->status[1] & NE7_ST1_OR) { 2069 /* 2070 * DMA overrun. Someone hogged the bus 2071 * and didn't release it in time for the 2072 * next FDC transfer. 2073 * Just restart it, don't increment retry 2074 * count. (vak) 2075 */ 2076 fdc->state = SEEKCOMPLETE; 2077 return (1); 2078 } 2079 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV 2080 && fdc->retry < 6) 2081 fdc->retry = 6; /* force a reset */ 2082 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2083 && fdc->status[2] & NE7_ST2_WC 2084 && fdc->retry < 3) 2085 fdc->retry = 3; /* force recalibrate */ 2086 return (retrier(fdc)); 2087 } 2088 /* All OK */ 2089 fd->skip += fdblk; 2090 if (!format && fd->skip < bp->bio_bcount - bp->bio_resid) { 2091 /* set up next transfer */ 2092 fdc->state = DOSEEK; 2093 } else { 2094 /* ALL DONE */ 2095 fd->skip = 0; 2096 fdc->bp = NULL; 2097 device_unbusy(fd->dev); 2098 devstat_end_transaction_bio(&fd->device_stats, bp); 2099 biodone(bp); 2100 fdc->fd = (fd_p) 0; 2101 fdc->fdu = -1; 2102 fdc->state = FINDWORK; 2103 } 2104 return (1); 2105 case RESETCTLR: 2106 fdc_reset(fdc); 2107 fdc->retry++; 2108 fdc->state = RESETCOMPLETE; 2109 return (0); 2110 case RESETCOMPLETE: 2111 /* 2112 * Discard all the results from the reset so that they 2113 * can't cause an unexpected interrupt later. 2114 */ 2115 for (i = 0; i < 4; i++) 2116 (void)fd_sense_int(fdc, &st0, &cyl); 2117 fdc->state = STARTRECAL; 2118 /* Fall through. */ 2119 case STARTRECAL: 2120 if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) { 2121 /* arrgl */ 2122 fdc->retry = 6; 2123 return (retrier(fdc)); 2124 } 2125 fdc->state = RECALWAIT; 2126 return (0); /* will return later */ 2127 case RECALWAIT: 2128 /* allow heads to settle */ 2129 timeout(fd_pseudointr, fdc, hz / 8); 2130 fdc->state = RECALCOMPLETE; 2131 return (0); /* will return later */ 2132 case RECALCOMPLETE: 2133 do { 2134 /* 2135 * See SEEKCOMPLETE for a comment on this: 2136 */ 2137 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 2138 return 0; 2139 if(fdc->fdct == FDC_NE765 2140 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 2141 return 0; /* hope for a real intr */ 2142 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 2143 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0) 2144 { 2145 if(fdc->retry > 3) 2146 /* 2147 * a recalibrate from beyond cylinder 77 2148 * will "fail" due to the FDC limitations; 2149 * since people used to complain much about 2150 * the failure message, try not logging 2151 * this one if it seems to be the first 2152 * time in a line 2153 */ 2154 printf("fd%d: recal failed ST0 %b cyl %d\n", 2155 fdu, st0, NE7_ST0BITS, cyl); 2156 if(fdc->retry < 3) fdc->retry = 3; 2157 return (retrier(fdc)); 2158 } 2159 fd->track = 0; 2160 /* Seek (probably) necessary */ 2161 fdc->state = DOSEEK; 2162 return (1); /* will return immediatly */ 2163 case MOTORWAIT: 2164 if(fd->flags & FD_MOTOR_WAIT) 2165 { 2166 return (0); /* time's not up yet */ 2167 } 2168 if (fdc->flags & FDC_NEEDS_RESET) { 2169 fdc->state = RESETCTLR; 2170 fdc->flags &= ~FDC_NEEDS_RESET; 2171 } else { 2172 /* 2173 * If all motors were off, then the controller was 2174 * reset, so it has lost track of the current 2175 * cylinder. Recalibrate to handle this case. 2176 * But first, discard the results of the reset. 2177 */ 2178 fdc->state = RESETCOMPLETE; 2179 } 2180 return (1); /* will return immediatly */ 2181 default: 2182 device_printf(fdc->fdc_dev, "unexpected FD int->"); 2183 if (fd_read_status(fdc, fd->fdsu) == 0) 2184 printf("FDC status :%x %x %x %x %x %x %x ", 2185 fdc->status[0], 2186 fdc->status[1], 2187 fdc->status[2], 2188 fdc->status[3], 2189 fdc->status[4], 2190 fdc->status[5], 2191 fdc->status[6] ); 2192 else 2193 printf("No status available "); 2194 if (fd_sense_int(fdc, &st0, &cyl) != 0) 2195 { 2196 printf("[controller is dead now]\n"); 2197 return (0); 2198 } 2199 printf("ST0 = %x, PCN = %x\n", st0, cyl); 2200 return (0); 2201 } 2202 /*XXX confusing: some branches return immediately, others end up here*/ 2203 return (1); /* Come back immediatly to new state */ 2204 } 2205 2206 static int 2207 retrier(struct fdc_data *fdc) 2208 { 2209 struct bio *bp; 2210 struct fd_data *fd; 2211 int fdu; 2212 2213 bp = fdc->bp; 2214 2215 /* XXX shouldn't this be cached somewhere? */ 2216 fdu = FDUNIT(minor(bp->bio_dev)); 2217 fd = devclass_get_softc(fd_devclass, fdu); 2218 if (fd->options & FDOPT_NORETRY) 2219 goto fail; 2220 2221 switch (fdc->retry) { 2222 case 0: case 1: case 2: 2223 fdc->state = SEEKCOMPLETE; 2224 break; 2225 case 3: case 4: case 5: 2226 fdc->state = STARTRECAL; 2227 break; 2228 case 6: 2229 fdc->state = RESETCTLR; 2230 break; 2231 case 7: 2232 break; 2233 default: 2234 fail: 2235 { 2236 dev_t sav_bio_dev = bp->bio_dev; 2237 /* Trick diskerr */ 2238 bp->bio_dev = makedev(major(bp->bio_dev), 2239 (FDUNIT(minor(bp->bio_dev))<<3)|RAW_PART); 2240 diskerr(bp, "hard error", LOG_PRINTF, 2241 fdc->fd->skip / DEV_BSIZE, 2242 (struct disklabel *)NULL); 2243 bp->bio_dev = sav_bio_dev; 2244 if (fdc->flags & FDC_STAT_VALID) 2245 { 2246 printf( 2247 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n", 2248 fdc->status[0], NE7_ST0BITS, 2249 fdc->status[1], NE7_ST1BITS, 2250 fdc->status[2], NE7_ST2BITS, 2251 fdc->status[3], fdc->status[4], 2252 fdc->status[5]); 2253 } 2254 else 2255 printf(" (No status)\n"); 2256 } 2257 bp->bio_flags |= BIO_ERROR; 2258 bp->bio_error = EIO; 2259 bp->bio_resid += bp->bio_bcount - fdc->fd->skip; 2260 fdc->bp = NULL; 2261 fdc->fd->skip = 0; 2262 device_unbusy(fd->dev); 2263 devstat_end_transaction_bio(&fdc->fd->device_stats, bp); 2264 biodone(bp); 2265 fdc->state = FINDWORK; 2266 fdc->flags |= FDC_NEEDS_RESET; 2267 fdc->fd = (fd_p) 0; 2268 fdc->fdu = -1; 2269 return (1); 2270 } 2271 fdc->retry++; 2272 return (1); 2273 } 2274 2275 static void 2276 fdbiodone(struct bio *bp) 2277 { 2278 wakeup(bp); 2279 } 2280 2281 static int 2282 fdformat(dev, finfo, p) 2283 dev_t dev; 2284 struct fd_formb *finfo; 2285 struct proc *p; 2286 { 2287 fdu_t fdu; 2288 fd_p fd; 2289 2290 struct bio *bp; 2291 int rv = 0, s; 2292 size_t fdblk; 2293 2294 fdu = FDUNIT(minor(dev)); 2295 fd = devclass_get_softc(fd_devclass, fdu); 2296 fdblk = 128 << fd->ft->secsize; 2297 2298 /* set up a buffer header for fdstrategy() */ 2299 bp = (struct bio *)malloc(sizeof(struct bio), M_TEMP, M_NOWAIT); 2300 if(bp == 0) 2301 return ENOMEM; 2302 /* 2303 * keep the process from being swapped 2304 */ 2305 PHOLD(p); 2306 bzero((void *)bp, sizeof(*bp)); 2307 bp->bio_cmd = BIO_FORMAT; 2308 2309 /* 2310 * calculate a fake blkno, so fdstrategy() would initiate a 2311 * seek to the requested cylinder 2312 */ 2313 bp->bio_blkno = (finfo->cyl * (fd->ft->sectrac * fd->ft->heads) 2314 + finfo->head * fd->ft->sectrac) * fdblk / DEV_BSIZE; 2315 2316 bp->bio_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2317 bp->bio_data = (caddr_t)finfo; 2318 2319 /* now do the format */ 2320 bp->bio_dev = dev; 2321 bp->bio_done = fdbiodone; 2322 fdstrategy(bp); 2323 2324 /* ...and wait for it to complete */ 2325 s = splbio(); 2326 while(!(bp->bio_flags & BIO_DONE)) { 2327 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2328 if (rv == EWOULDBLOCK) 2329 break; 2330 } 2331 splx(s); 2332 2333 if (rv == EWOULDBLOCK) { 2334 /* timed out */ 2335 rv = EIO; 2336 device_unbusy(fd->dev); 2337 } 2338 if (bp->bio_flags & BIO_ERROR) 2339 rv = bp->bio_error; 2340 /* 2341 * allow the process to be swapped 2342 */ 2343 PRELE(p); 2344 free(bp, M_TEMP); 2345 return rv; 2346 } 2347 2348 /* 2349 * TODO: don't allocate buffer on stack. 2350 */ 2351 2352 static int 2353 fdioctl(dev, cmd, addr, flag, p) 2354 dev_t dev; 2355 u_long cmd; 2356 caddr_t addr; 2357 int flag; 2358 struct proc *p; 2359 { 2360 fdu_t fdu = FDUNIT(minor(dev)); 2361 fd_p fd = devclass_get_softc(fd_devclass, fdu); 2362 size_t fdblk; 2363 2364 struct fd_type *fdt; 2365 struct disklabel *dl; 2366 char buffer[DEV_BSIZE]; 2367 int error = 0; 2368 2369 fdblk = 128 << fd->ft->secsize; 2370 2371 switch (cmd) { 2372 case DIOCGDINFO: 2373 bzero(buffer, sizeof (buffer)); 2374 dl = (struct disklabel *)buffer; 2375 dl->d_secsize = fdblk; 2376 fdt = fd->ft; 2377 dl->d_secpercyl = fdt->size / fdt->tracks; 2378 dl->d_type = DTYPE_FLOPPY; 2379 2380 if (readdisklabel(dkmodpart(dev, RAW_PART), dl) 2381 == NULL) 2382 error = 0; 2383 else 2384 error = EINVAL; 2385 2386 *(struct disklabel *)addr = *dl; 2387 break; 2388 2389 case DIOCSDINFO: 2390 if ((flag & FWRITE) == 0) 2391 error = EBADF; 2392 break; 2393 2394 case DIOCWLABEL: 2395 if ((flag & FWRITE) == 0) 2396 error = EBADF; 2397 break; 2398 2399 case DIOCWDINFO: 2400 if ((flag & FWRITE) == 0) { 2401 error = EBADF; 2402 break; 2403 } 2404 2405 dl = (struct disklabel *)addr; 2406 2407 if ((error = setdisklabel((struct disklabel *)buffer, dl, 2408 (u_long)0)) != 0) 2409 break; 2410 2411 error = writedisklabel(dev, (struct disklabel *)buffer); 2412 break; 2413 case FD_FORM: 2414 if ((flag & FWRITE) == 0) 2415 error = EBADF; /* must be opened for writing */ 2416 else if (((struct fd_formb *)addr)->format_version != 2417 FD_FORMAT_VERSION) 2418 error = EINVAL; /* wrong version of formatting prog */ 2419 else 2420 error = fdformat(dev, (struct fd_formb *)addr, p); 2421 break; 2422 2423 case FD_GTYPE: /* get drive type */ 2424 *(struct fd_type *)addr = *fd->ft; 2425 break; 2426 2427 case FD_STYPE: /* set drive type */ 2428 /* this is considered harmful; only allow for superuser */ 2429 if (suser(p) != 0) 2430 return EPERM; 2431 *fd->ft = *(struct fd_type *)addr; 2432 break; 2433 2434 case FD_GOPTS: /* get drive options */ 2435 *(int *)addr = fd->options; 2436 break; 2437 2438 case FD_SOPTS: /* set drive options */ 2439 fd->options = *(int *)addr; 2440 break; 2441 2442 default: 2443 error = ENOTTY; 2444 break; 2445 } 2446 return (error); 2447 } 2448 2449 /* 2450 * Hello emacs, these are the 2451 * Local Variables: 2452 * c-indent-level: 8 2453 * c-continued-statement-offset: 8 2454 * c-continued-brace-offset: 0 2455 * c-brace-offset: -8 2456 * c-brace-imaginary-offset: 0 2457 * c-argdecl-indent: 8 2458 * c-label-offset: -8 2459 * c++-hanging-braces: 1 2460 * c++-access-specifier-offset: -8 2461 * c++-empty-arglist-indent: 8 2462 * c++-friend-offset: 0 2463 * End: 2464 */ 2465