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 56 #include <sys/param.h> 57 #include <sys/systm.h> 58 #include <sys/kernel.h> 59 #include <sys/buf.h> 60 #include <sys/bus.h> 61 #include <sys/conf.h> 62 #include <sys/disklabel.h> 63 #include <sys/devicestat.h> 64 #include <sys/fcntl.h> 65 #include <sys/malloc.h> 66 #include <sys/module.h> 67 #include <sys/proc.h> 68 #include <sys/syslog.h> 69 70 #include <sys/bus.h> 71 #include <machine/bus.h> 72 #include <sys/rman.h> 73 74 #include <machine/clock.h> 75 #include <machine/ioctl_fd.h> 76 #include <machine/resource.h> 77 #include <machine/stdarg.h> 78 79 #include <isa/isavar.h> 80 #include <isa/isareg.h> 81 #include <isa/fdreg.h> 82 #include <isa/fdc.h> 83 #include <isa/rtc.h> 84 85 /* misuse a flag to identify format operation */ 86 #define B_FORMAT B_XXX 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(fdc_p fdc, u_int8_t v) 290 { 291 if (fdc->flags & FDC_ISPNP) 292 bus_space_write_1(fdc->ctlt, fdc->ctlh, 0, v); 293 else 294 bus_space_write_1(fdc->portt, fdc->porth, FDCTL, v); 295 } 296 297 #if 0 298 299 static u_int8_t 300 fdin_rd(fdc_p fdc) 301 { 302 return bus_space_read_1(fdc->portt, fdc->porth, FDIN); 303 } 304 305 #endif 306 307 #ifdef FDC_YE 308 #if NCARD > 0 309 #include <sys/select.h> 310 #include <sys/module.h> 311 #include <pccard/cardinfo.h> 312 #include <pccard/driver.h> 313 #include <pccard/slot.h> 314 315 /* 316 * PC-Card (PCMCIA) specific code. 317 */ 318 static int yeinit(struct pccard_devinfo *); /* init device */ 319 static void yeunload(struct pccard_devinfo *); /* Disable driver */ 320 static int yeintr(struct pccard_devinfo *); /* Interrupt handler */ 321 322 PCCARD_MODULE(fdc, yeinit, yeunload, yeintr, 0, bio_imask); 323 324 /* 325 * Initialize the device - called from Slot manager. 326 */ 327 static int yeinit(struct pccard_devinfo *devi) 328 { 329 fdc_p fdc = &fdc_data[devi->isahd.id_unit]; 330 331 fdc->baseport = devi->isahd.id_iobase; 332 /* 333 * reset controller 334 */ 335 fdout_wr(fdc, 0); 336 DELAY(100); 337 fdout_wr(fdc, FDO_FRST); 338 339 /* 340 * wire into system 341 */ 342 if (yeattach(&devi->isahd) == 0) 343 return(ENXIO); 344 345 return(0); 346 } 347 348 /* 349 * yeunload - unload the driver and clear the table. 350 * XXX TODO: 351 * This is usually called when the card is ejected, but 352 * can be caused by a modunload of a controller driver. 353 * The idea is to reset the driver's view of the device 354 * and ensure that any driver entry points such as 355 * read and write do not hang. 356 */ 357 static void yeunload(struct pccard_devinfo *devi) 358 { 359 if (fd_data[devi->isahd.id_unit].type == NO_TYPE) 360 return; 361 362 /* 363 * this prevents Fdopen() and fdstrategy() from attempting 364 * to access unloaded controller 365 */ 366 fd_data[devi->isahd.id_unit].type = NO_TYPE; 367 368 printf("fdc%d: unload\n", devi->isahd.id_unit); 369 } 370 371 /* 372 * yeintr - Shared interrupt called from 373 * front end of PC-Card handler. 374 */ 375 static int yeintr(struct pccard_devinfo *devi) 376 { 377 fdintr((fdcu_t)devi->isahd.id_unit); 378 return(1); 379 } 380 #endif /* NCARD > 0 */ 381 #endif /* FDC_YE */ 382 383 static d_open_t Fdopen; /* NOTE, not fdopen */ 384 static d_close_t fdclose; 385 static d_ioctl_t fdioctl; 386 static d_strategy_t fdstrategy; 387 388 #define CDEV_MAJOR 9 389 #define BDEV_MAJOR 2 390 391 static struct cdevsw fd_cdevsw = { 392 /* open */ Fdopen, 393 /* close */ fdclose, 394 /* read */ physread, 395 /* write */ physwrite, 396 /* ioctl */ fdioctl, 397 /* poll */ nopoll, 398 /* mmap */ nommap, 399 /* strategy */ fdstrategy, 400 /* name */ "fd", 401 /* maj */ CDEV_MAJOR, 402 /* dump */ nodump, 403 /* psize */ nopsize, 404 /* flags */ D_DISK, 405 /* bmaj */ BDEV_MAJOR 406 }; 407 408 static int 409 fdc_err(struct fdc_data *fdc, const char *s) 410 { 411 fdc->fdc_errs++; 412 if (s) { 413 if (fdc->fdc_errs < FDC_ERRMAX) { 414 device_print_prettyname(fdc->fdc_dev); 415 printf("%s", s); 416 } else if (fdc->fdc_errs == FDC_ERRMAX) { 417 device_print_prettyname(fdc->fdc_dev); 418 printf("too many errors, not logging any more\n"); 419 } 420 } 421 422 return FD_FAILED; 423 } 424 425 /* 426 * fd_cmd: Send a command to the chip. Takes a varargs with this structure: 427 * Unit number, 428 * # of output bytes, output bytes as ints ..., 429 * # of input bytes, input bytes as ints ... 430 */ 431 static int 432 fd_cmd(struct fdc_data *fdc, int n_out, ...) 433 { 434 u_char cmd; 435 int n_in; 436 int n; 437 va_list ap; 438 439 va_start(ap, n_out); 440 cmd = (u_char)(va_arg(ap, int)); 441 va_end(ap); 442 va_start(ap, n_out); 443 for (n = 0; n < n_out; n++) 444 { 445 if (out_fdc(fdc, va_arg(ap, int)) < 0) 446 { 447 char msg[50]; 448 snprintf(msg, sizeof(msg), 449 "cmd %x failed at out byte %d of %d\n", 450 cmd, n + 1, n_out); 451 return fdc_err(fdc, msg); 452 } 453 } 454 n_in = va_arg(ap, int); 455 for (n = 0; n < n_in; n++) 456 { 457 int *ptr = va_arg(ap, int *); 458 if (fd_in(fdc, ptr) < 0) 459 { 460 char msg[50]; 461 snprintf(msg, sizeof(msg), 462 "cmd %02x failed at in byte %d of %d\n", 463 cmd, n + 1, n_in); 464 return fdc_err(fdc, msg); 465 } 466 } 467 468 return 0; 469 } 470 471 static int 472 enable_fifo(fdc_p fdc) 473 { 474 int i, j; 475 476 if ((fdc->flags & FDC_HAS_FIFO) == 0) { 477 478 /* 479 * XXX: 480 * Cannot use fd_cmd the normal way here, since 481 * this might be an invalid command. Thus we send the 482 * first byte, and check for an early turn of data directon. 483 */ 484 485 if (out_fdc(fdc, I8207X_CONFIGURE) < 0) 486 return fdc_err(fdc, "Enable FIFO failed\n"); 487 488 /* If command is invalid, return */ 489 j = 100000; 490 while ((i = fdsts_rd(fdc) & (NE7_DIO | NE7_RQM)) 491 != NE7_RQM && j-- > 0) 492 if (i == (NE7_DIO | NE7_RQM)) { 493 fdc_reset(fdc); 494 return FD_FAILED; 495 } 496 if (j<0 || 497 fd_cmd(fdc, 3, 498 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) { 499 fdc_reset(fdc); 500 return fdc_err(fdc, "Enable FIFO failed\n"); 501 } 502 fdc->flags |= FDC_HAS_FIFO; 503 return 0; 504 } 505 if (fd_cmd(fdc, 4, 506 I8207X_CONFIGURE, 0, (fifo_threshold - 1) & 0xf, 0, 0) < 0) 507 return fdc_err(fdc, "Re-enable FIFO failed\n"); 508 return 0; 509 } 510 511 static int 512 fd_sense_drive_status(fdc_p fdc, int *st3p) 513 { 514 int st3; 515 516 if (fd_cmd(fdc, 2, NE7CMD_SENSED, fdc->fdu, 1, &st3)) 517 { 518 return fdc_err(fdc, "Sense Drive Status failed\n"); 519 } 520 if (st3p) 521 *st3p = st3; 522 523 return 0; 524 } 525 526 static int 527 fd_sense_int(fdc_p fdc, int *st0p, int *cylp) 528 { 529 int cyl, st0, ret; 530 531 ret = fd_cmd(fdc, 1, NE7CMD_SENSEI, 1, &st0); 532 if (ret) { 533 (void)fdc_err(fdc, 534 "sense intr err reading stat reg 0\n"); 535 return ret; 536 } 537 538 if (st0p) 539 *st0p = st0; 540 541 if ((st0 & NE7_ST0_IC) == NE7_ST0_IC_IV) { 542 /* 543 * There doesn't seem to have been an interrupt. 544 */ 545 return FD_NOT_VALID; 546 } 547 548 if (fd_in(fdc, &cyl) < 0) { 549 return fdc_err(fdc, "can't get cyl num\n"); 550 } 551 552 if (cylp) 553 *cylp = cyl; 554 555 return 0; 556 } 557 558 559 static int 560 fd_read_status(fdc_p fdc, int fdsu) 561 { 562 int i, ret; 563 564 for (i = 0; i < 7; i++) { 565 /* 566 * XXX types are poorly chosen. Only bytes can by read 567 * from the hardware, but fdc->status[] wants u_ints and 568 * fd_in() gives ints. 569 */ 570 int status; 571 572 ret = fd_in(fdc, &status); 573 fdc->status[i] = status; 574 if (ret != 0) 575 break; 576 } 577 578 if (ret == 0) 579 fdc->flags |= FDC_STAT_VALID; 580 else 581 fdc->flags &= ~FDC_STAT_VALID; 582 583 return ret; 584 } 585 586 /****************************************************************************/ 587 /* autoconfiguration stuff */ 588 /****************************************************************************/ 589 590 static int 591 fdc_alloc_resources(struct fdc_data *fdc) 592 { 593 device_t dev; 594 int ispnp; 595 596 dev = fdc->fdc_dev; 597 ispnp = fdc->fdc_ispnp; 598 fdc->rid_ioport = fdc->rid_irq = fdc->rid_drq = 0; 599 fdc->res_ioport = fdc->res_irq = fdc->res_drq = 0; 600 601 fdc->res_ioport = bus_alloc_resource(dev, SYS_RES_IOPORT, 602 &fdc->rid_ioport, 0ul, ~0ul, 603 ispnp ? 1 : IO_FDCSIZE, 604 RF_ACTIVE); 605 if (fdc->res_ioport == 0) { 606 device_printf(dev, "cannot reserve I/O port range\n"); 607 return ENXIO; 608 } 609 fdc->portt = rman_get_bustag(fdc->res_ioport); 610 fdc->porth = rman_get_bushandle(fdc->res_ioport); 611 612 /* 613 * Some bios' report the device at 0x3f2-0x3f5,0x3f7 and some at 614 * 0x3f0-0x3f5,0x3f7. We detect the former by checking the size 615 * and adjust the port address accordingly. 616 * 617 * And some (!!) report 0x3f2-0x3f5 and completely leave out the 618 * control register! It seems that some non-antique controller chips 619 * have a different method of programming the transfer speed which 620 * doesn't require the control register, but it's mighty bogus as the 621 * chip still responds to the address for the control register. 622 */ 623 if (ispnp) { 624 int cntport0; 625 int cntport1; 626 u_long ctlstart; 627 u_long ctlend; 628 629 cntport0 = bus_get_resource_count(dev, SYS_RES_IOPORT, 0); 630 cntport1 = bus_get_resource_count(dev, SYS_RES_IOPORT, 1); 631 ctlstart = 0ul; 632 ctlend = ~0ul; 633 if (cntport0 == 4) 634 fdc->port_off = -2; 635 if (cntport1 == 0) { 636 /* GRRR, request a specific port */ 637 ctlstart = rman_get_start(fdc->res_ioport) + 638 fdc->port_off + 7; /* usually 0x3f7 */ 639 ctlend = ctlstart; 640 if (bootverbose) 641 device_printf(dev, "added missing ctrl port\n"); 642 } 643 fdc->flags |= FDC_ISPNP; 644 fdc->rid_ctl = 1; 645 fdc->res_ctl = bus_alloc_resource(dev, SYS_RES_IOPORT, 646 &fdc->rid_ctl, ctlstart, 647 ctlend, 1, RF_ACTIVE); 648 if (fdc->res_ctl == 0) { 649 device_printf(dev, "cannot reserve I/O port range 2\n"); 650 return ENXIO; 651 } 652 fdc->ctlt = rman_get_bustag(fdc->res_ctl); 653 fdc->ctlh = rman_get_bushandle(fdc->res_ctl); 654 } 655 656 fdc->res_irq = bus_alloc_resource(dev, SYS_RES_IRQ, 657 &fdc->rid_irq, 0ul, ~0ul, 1, 658 RF_ACTIVE); 659 if (fdc->res_irq == 0) { 660 device_printf(dev, "cannot reserve interrupt line\n"); 661 return ENXIO; 662 } 663 fdc->res_drq = bus_alloc_resource(dev, SYS_RES_DRQ, 664 &fdc->rid_drq, 0ul, ~0ul, 1, 665 RF_ACTIVE); 666 if (fdc->res_drq == 0) { 667 device_printf(dev, "cannot reserve DMA request line\n"); 668 return ENXIO; 669 } 670 fdc->dmachan = fdc->res_drq->r_start; 671 672 return 0; 673 } 674 675 static void 676 fdc_release_resources(struct fdc_data *fdc) 677 { 678 device_t dev; 679 680 dev = fdc->fdc_dev; 681 if (fdc->res_irq != 0) { 682 bus_deactivate_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 683 fdc->res_irq); 684 bus_release_resource(dev, SYS_RES_IRQ, fdc->rid_irq, 685 fdc->res_irq); 686 } 687 if (fdc->res_ctl != 0) { 688 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 689 fdc->res_ctl); 690 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ctl, 691 fdc->res_ctl); 692 } 693 if (fdc->res_ioport != 0) { 694 bus_deactivate_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 695 fdc->res_ioport); 696 bus_release_resource(dev, SYS_RES_IOPORT, fdc->rid_ioport, 697 fdc->res_ioport); 698 } 699 if (fdc->res_drq != 0) { 700 bus_deactivate_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 701 fdc->res_drq); 702 bus_release_resource(dev, SYS_RES_DRQ, fdc->rid_drq, 703 fdc->res_drq); 704 } 705 } 706 707 /****************************************************************************/ 708 /* autoconfiguration stuff */ 709 /****************************************************************************/ 710 711 static struct isa_pnp_id fdc_ids[] = { 712 {0x0007d041, "PC standard floppy disk controller"}, /* PNP0700 */ 713 {0x0107d041, "Standard floppy controller supporting MS Device Bay Spec"}, /* PNP0701 */ 714 {0} 715 }; 716 717 static int 718 fdc_read_ivar(device_t dev, device_t child, int which, u_long *result) 719 { 720 struct fdc_ivars *ivars = device_get_ivars(child); 721 722 switch (which) { 723 case FDC_IVAR_FDUNIT: 724 *result = ivars->fdunit; 725 break; 726 default: 727 return ENOENT; 728 } 729 return 0; 730 } 731 732 /* 733 * fdc controller section. 734 */ 735 static int 736 fdc_probe(device_t dev) 737 { 738 int error, ic_type; 739 struct fdc_data *fdc; 740 741 fdc = device_get_softc(dev); 742 bzero(fdc, sizeof *fdc); 743 fdc->fdc_dev = dev; 744 745 /* Check pnp ids */ 746 error = ISA_PNP_PROBE(device_get_parent(dev), dev, fdc_ids); 747 if (error == ENXIO) 748 return ENXIO; 749 fdc->fdc_ispnp = (error == 0); 750 751 /* Attempt to allocate our resources for the duration of the probe */ 752 error = fdc_alloc_resources(fdc); 753 if (error) 754 goto out; 755 756 /* First - lets reset the floppy controller */ 757 fdout_wr(fdc, 0); 758 DELAY(100); 759 fdout_wr(fdc, FDO_FRST); 760 761 /* see if it can handle a command */ 762 if (fd_cmd(fdc, 3, NE7CMD_SPECIFY, NE7_SPEC_1(3, 240), 763 NE7_SPEC_2(2, 0), 0)) { 764 error = ENXIO; 765 goto out; 766 } 767 768 if (fd_cmd(fdc, 1, NE7CMD_VERSION, 1, &ic_type) == 0) { 769 ic_type = (u_char)ic_type; 770 switch (ic_type) { 771 case 0x80: 772 device_set_desc(dev, "NEC 765 or clone"); 773 fdc->fdct = FDC_NE765; 774 break; 775 case 0x81: 776 device_set_desc(dev, "Intel 82077 or clone"); 777 fdc->fdct = FDC_I82077; 778 break; 779 case 0x90: 780 device_set_desc(dev, "NEC 72065B or clone"); 781 fdc->fdct = FDC_NE72065; 782 break; 783 default: 784 device_set_desc(dev, "generic floppy controller"); 785 fdc->fdct = FDC_UNKNOWN; 786 break; 787 } 788 } 789 790 out: 791 fdc_release_resources(fdc); 792 return (error); 793 } 794 795 /* 796 * Add a child device to the fdc controller. It will then be probed etc. 797 */ 798 static void 799 fdc_add_child(device_t dev, const char *name, int unit) 800 { 801 int disabled; 802 struct fdc_ivars *ivar; 803 device_t child; 804 805 ivar = malloc(sizeof *ivar, M_DEVBUF /* XXX */, M_NOWAIT); 806 if (ivar == NULL) 807 return; 808 bzero(ivar, sizeof *ivar); 809 if (resource_int_value(name, unit, "drive", &ivar->fdunit) != 0) 810 ivar->fdunit = 0; 811 child = device_add_child(dev, name, unit); 812 if (child == NULL) 813 return; 814 device_set_ivars(child, ivar); 815 if (resource_int_value(name, unit, "disabled", &disabled) == 0 816 && disabled != 0) 817 device_disable(child); 818 } 819 820 static int 821 fdc_attach(device_t dev) 822 { 823 struct fdc_data *fdc; 824 int i, error; 825 826 fdc = device_get_softc(dev); 827 error = fdc_alloc_resources(fdc); 828 if (error) { 829 device_printf(dev, "cannot re-aquire resources\n"); 830 return error; 831 } 832 error = BUS_SETUP_INTR(device_get_parent(dev), dev, fdc->res_irq, 833 INTR_TYPE_BIO, fdc_intr, fdc, &fdc->fdc_intr); 834 if (error) { 835 device_printf(dev, "cannot setup interrupt\n"); 836 return error; 837 } 838 fdc->fdcu = device_get_unit(dev); 839 fdc->flags |= FDC_ATTACHED; 840 841 /* Acquire the DMA channel forever, The driver will do the rest */ 842 /* XXX should integrate with rman */ 843 isa_dma_acquire(fdc->dmachan); 844 isa_dmainit(fdc->dmachan, 128 << 3 /* XXX max secsize */); 845 fdc->state = DEVIDLE; 846 847 /* reset controller, turn motor off, clear fdout mirror reg */ 848 fdout_wr(fdc, ((fdc->fdout = 0))); 849 bufq_init(&fdc->head); 850 851 /* 852 * Probe and attach any children. We should probably detect 853 * devices from the BIOS unless overridden. 854 */ 855 for (i = resource_query_string(-1, "at", device_get_nameunit(dev)); 856 i != -1; 857 i = resource_query_string(i, "at", device_get_nameunit(dev))) 858 fdc_add_child(dev, resource_query_name(i), 859 resource_query_unit(i)); 860 861 return (bus_generic_attach(dev)); 862 } 863 864 static int 865 fdc_print_child(device_t me, device_t child) 866 { 867 int retval = 0; 868 869 retval += bus_print_child_header(me, child); 870 retval += printf(" on %s drive %d\n", device_get_nameunit(me), 871 fdc_get_fdunit(child)); 872 873 return (retval); 874 } 875 876 static device_method_t fdc_methods[] = { 877 /* Device interface */ 878 DEVMETHOD(device_probe, fdc_probe), 879 DEVMETHOD(device_attach, fdc_attach), 880 DEVMETHOD(device_detach, bus_generic_detach), 881 DEVMETHOD(device_shutdown, bus_generic_shutdown), 882 DEVMETHOD(device_suspend, bus_generic_suspend), 883 DEVMETHOD(device_resume, bus_generic_resume), 884 885 /* Bus interface */ 886 DEVMETHOD(bus_print_child, fdc_print_child), 887 DEVMETHOD(bus_read_ivar, fdc_read_ivar), 888 /* Our children never use any other bus interface methods. */ 889 890 { 0, 0 } 891 }; 892 893 static driver_t fdc_driver = { 894 "fdc", 895 fdc_methods, 896 sizeof(struct fdc_data) 897 }; 898 899 DRIVER_MODULE(fdc, isa, fdc_driver, fdc_devclass, 0, 0); 900 901 /******************************************************************/ 902 /* 903 * devices attached to the controller section. 904 */ 905 static int 906 fd_probe(device_t dev) 907 { 908 int i; 909 u_int fdt, st0, st3; 910 struct fd_data *fd; 911 struct fdc_data *fdc; 912 fdsu_t fdsu; 913 static int fd_fifo = 0; 914 915 fdsu = *(int *)device_get_ivars(dev); /* xxx cheat a bit... */ 916 fd = device_get_softc(dev); 917 fdc = device_get_softc(device_get_parent(dev)); 918 919 bzero(fd, sizeof *fd); 920 fd->dev = dev; 921 fd->fdc = fdc; 922 fd->fdsu = fdsu; 923 fd->fdu = device_get_unit(dev); 924 925 #ifdef __i386__ 926 /* look up what bios thinks we have */ 927 switch (fd->fdu) { 928 case 0: 929 if (device_get_flags(fdc->fdc_dev) & FDC_PRETEND_D0) 930 fdt = RTCFDT_144M | RTCFDT_144M_PRETENDED; 931 else 932 fdt = (rtcin(RTC_FDISKETTE) & 0xf0); 933 break; 934 case 1: 935 fdt = ((rtcin(RTC_FDISKETTE) << 4) & 0xf0); 936 break; 937 default: 938 fdt = RTCFDT_NONE; 939 break; 940 } 941 #else 942 fdt = RTCFDT_144M; /* XXX probably */ 943 #endif 944 945 /* is there a unit? */ 946 if (fdt == RTCFDT_NONE) 947 return (ENXIO); 948 949 /* select it */ 950 set_motor(fdc, fdsu, TURNON); 951 DELAY(1000000); /* 1 sec */ 952 953 /* XXX This doesn't work before the first set_motor() */ 954 if (fd_fifo == 0 && fdc->fdct != FDC_NE765 && fdc->fdct != FDC_UNKNOWN 955 && (device_get_flags(fdc->fdc_dev) & FDC_NO_FIFO) == 0 956 && enable_fifo(fdc) == 0) { 957 device_print_prettyname(device_get_parent(dev)); 958 printf("FIFO enabled, %d bytes threshold\n", fifo_threshold); 959 } 960 fd_fifo = 1; 961 962 if ((fd_cmd(fdc, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) 963 && (st3 & NE7_ST3_T0)) { 964 /* if at track 0, first seek inwards */ 965 /* seek some steps: */ 966 fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0); 967 DELAY(300000); /* ...wait a moment... */ 968 fd_sense_int(fdc, 0, 0); /* make ctrlr happy */ 969 } 970 971 /* If we're at track 0 first seek inwards. */ 972 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) { 973 /* Seek some steps... */ 974 if (fd_cmd(fdc, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 975 /* ...wait a moment... */ 976 DELAY(300000); 977 /* make ctrlr happy: */ 978 fd_sense_int(fdc, 0, 0); 979 } 980 } 981 982 for (i = 0; i < 2; i++) { 983 /* 984 * we must recalibrate twice, just in case the 985 * heads have been beyond cylinder 76, since most 986 * FDCs still barf when attempting to recalibrate 987 * more than 77 steps 988 */ 989 /* go back to 0: */ 990 if (fd_cmd(fdc, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 991 /* a second being enough for full stroke seek*/ 992 DELAY(i == 0 ? 1000000 : 300000); 993 994 /* anything responding? */ 995 if (fd_sense_int(fdc, &st0, 0) == 0 && 996 (st0 & NE7_ST0_EC) == 0) 997 break; /* already probed succesfully */ 998 } 999 } 1000 1001 set_motor(fdc, fdsu, TURNOFF); 1002 1003 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */ 1004 return (ENXIO); 1005 1006 fd->track = FD_NO_TRACK; 1007 fd->fdc = fdc; 1008 fd->fdsu = fdsu; 1009 fd->options = 0; 1010 callout_handle_init(&fd->toffhandle); 1011 callout_handle_init(&fd->tohandle); 1012 1013 switch (fdt) { 1014 case RTCFDT_12M: 1015 device_set_desc(dev, "1200-KB 5.25\" drive"); 1016 fd->type = FD_1200; 1017 break; 1018 case RTCFDT_144M | RTCFDT_144M_PRETENDED: 1019 device_set_desc(dev, "config-pretended 1440-MB 3.5\" drive"); 1020 fdt = RTCFDT_144M; 1021 fd->type = FD_1440; 1022 case RTCFDT_144M: 1023 device_set_desc(dev, "1440-KB 3.5\" drive"); 1024 fd->type = FD_1440; 1025 break; 1026 case RTCFDT_288M: 1027 case RTCFDT_288M_1: 1028 device_set_desc(dev, "2880-KB 3.5\" drive (in 1440-KB mode)"); 1029 fd->type = FD_1440; 1030 break; 1031 case RTCFDT_360K: 1032 device_set_desc(dev, "360-KB 5.25\" drive"); 1033 fd->type = FD_360; 1034 break; 1035 case RTCFDT_720K: 1036 printf("720-KB 3.5\" drive"); 1037 fd->type = FD_720; 1038 break; 1039 default: 1040 return (ENXIO); 1041 } 1042 return (0); 1043 } 1044 1045 static int 1046 fd_attach(device_t dev) 1047 { 1048 struct fd_data *fd; 1049 #if 0 1050 int i; 1051 int mynor; 1052 int typemynor; 1053 int typesize; 1054 #endif 1055 1056 fd = device_get_softc(dev); 1057 1058 cdevsw_add(&fd_cdevsw); /* XXX */ 1059 make_dev(&fd_cdevsw, (fd->fdu << 6), 1060 UID_ROOT, GID_OPERATOR, 0640, "rfd%d", fd->fdu); 1061 1062 #if 0 1063 /* Other make_dev() go here. */ 1064 #endif 1065 1066 /* 1067 * Export the drive to the devstat interface. 1068 */ 1069 devstat_add_entry(&fd->device_stats, device_get_name(dev), 1070 device_get_unit(dev), 512, DEVSTAT_NO_ORDERED_TAGS, 1071 DEVSTAT_TYPE_FLOPPY | DEVSTAT_TYPE_IF_OTHER, 1072 DEVSTAT_PRIORITY_FD); 1073 return (0); 1074 } 1075 1076 static device_method_t fd_methods[] = { 1077 /* Device interface */ 1078 DEVMETHOD(device_probe, fd_probe), 1079 DEVMETHOD(device_attach, fd_attach), 1080 DEVMETHOD(device_detach, bus_generic_detach), 1081 DEVMETHOD(device_shutdown, bus_generic_shutdown), 1082 DEVMETHOD(device_suspend, bus_generic_suspend), /* XXX */ 1083 DEVMETHOD(device_resume, bus_generic_resume), /* XXX */ 1084 1085 { 0, 0 } 1086 }; 1087 1088 static driver_t fd_driver = { 1089 "fd", 1090 fd_methods, 1091 sizeof(struct fd_data) 1092 }; 1093 1094 DRIVER_MODULE(fd, fdc, fd_driver, fd_devclass, 0, 0); 1095 1096 /******************************************************************/ 1097 1098 #ifdef FDC_YE 1099 /* 1100 * this is a subset of fdattach() optimized for the Y-E Data 1101 * PCMCIA floppy drive. 1102 */ 1103 static int yeattach(struct isa_device *dev) 1104 { 1105 fdcu_t fdcu = dev->id_unit; 1106 fdc_p fdc = fdc_data + fdcu; 1107 fdsu_t fdsu = 0; /* assume 1 drive per YE controller */ 1108 fdu_t fdu; 1109 fd_p fd; 1110 int st0, st3, i; 1111 fdc->fdcu = fdcu; 1112 /* 1113 * the FDC_NODMA flag is used to to indicate special PIO is used 1114 * instead of DMA 1115 */ 1116 fdc->flags = FDC_ATTACHED|FDC_NODMA; 1117 fdc->state = DEVIDLE; 1118 /* reset controller, turn motor off, clear fdout mirror reg */ 1119 fdout_wr(fdc, ((fdc->fdout = 0))); 1120 bufq_init(&fdc->head); 1121 /* 1122 * assume 2 drives/ "normal" controller 1123 */ 1124 fdu = fdcu * 2; 1125 if (fdu >= NFD) { 1126 printf("fdu %d >= NFD\n",fdu); 1127 return(0); 1128 }; 1129 fd = &fd_data[fdu]; 1130 1131 set_motor(fdcu, fdsu, TURNON); 1132 DELAY(1000000); /* 1 sec */ 1133 fdc->fdct = FDC_NE765; 1134 1135 if ((fd_cmd(fdcu, 2, NE7CMD_SENSED, fdsu, 1, &st3) == 0) && 1136 (st3 & NE7_ST3_T0)) { 1137 /* if at track 0, first seek inwards */ 1138 /* seek some steps: */ 1139 (void)fd_cmd(fdcu, 3, NE7CMD_SEEK, fdsu, 10, 0); 1140 DELAY(300000); /* ...wait a moment... */ 1141 (void)fd_sense_int(fdc, 0, 0); /* make ctrlr happy */ 1142 } 1143 1144 /* If we're at track 0 first seek inwards. */ 1145 if ((fd_sense_drive_status(fdc, &st3) == 0) && (st3 & NE7_ST3_T0)) { 1146 /* Seek some steps... */ 1147 if (fd_cmd(fdcu, 3, NE7CMD_SEEK, fdsu, 10, 0) == 0) { 1148 /* ...wait a moment... */ 1149 DELAY(300000); 1150 /* make ctrlr happy: */ 1151 (void)fd_sense_int(fdc, 0, 0); 1152 } 1153 } 1154 1155 for(i = 0; i < 2; i++) { 1156 /* 1157 * we must recalibrate twice, just in case the 1158 * heads have been beyond cylinder 76, since most 1159 * FDCs still barf when attempting to recalibrate 1160 * more than 77 steps 1161 */ 1162 /* go back to 0: */ 1163 if (fd_cmd(fdcu, 2, NE7CMD_RECAL, fdsu, 0) == 0) { 1164 /* a second being enough for full stroke seek*/ 1165 DELAY(i == 0? 1000000: 300000); 1166 1167 /* anything responding? */ 1168 if (fd_sense_int(fdc, &st0, 0) == 0 && 1169 (st0 & NE7_ST0_EC) == 0) 1170 break; /* already probed succesfully */ 1171 } 1172 } 1173 1174 set_motor(fdcu, fdsu, TURNOFF); 1175 1176 if (st0 & NE7_ST0_EC) /* no track 0 -> no drive present */ 1177 return(0); 1178 1179 fd->track = FD_NO_TRACK; 1180 fd->fdc = fdc; 1181 fd->fdsu = fdsu; 1182 fd->options = 0; 1183 printf("fdc%d: 1.44MB 3.5in PCMCIA\n", fdcu); 1184 fd->type = FD_1440; 1185 1186 return (1); 1187 } 1188 #endif 1189 1190 /****************************************************************************/ 1191 /* motor control stuff */ 1192 /* remember to not deselect the drive we're working on */ 1193 /****************************************************************************/ 1194 static void 1195 set_motor(struct fdc_data *fdc, int fdsu, int turnon) 1196 { 1197 int fdout = fdc->fdout; 1198 int needspecify = 0; 1199 1200 if(turnon) { 1201 fdout &= ~FDO_FDSEL; 1202 fdout |= (FDO_MOEN0 << fdsu) + fdsu; 1203 } else 1204 fdout &= ~(FDO_MOEN0 << fdsu); 1205 1206 if(!turnon 1207 && (fdout & (FDO_MOEN0+FDO_MOEN1+FDO_MOEN2+FDO_MOEN3)) == 0) 1208 /* gonna turn off the last drive, put FDC to bed */ 1209 fdout &= ~ (FDO_FRST|FDO_FDMAEN); 1210 else { 1211 /* make sure controller is selected and specified */ 1212 if((fdout & (FDO_FRST|FDO_FDMAEN)) == 0) 1213 needspecify = 1; 1214 fdout |= (FDO_FRST|FDO_FDMAEN); 1215 } 1216 1217 fdout_wr(fdc, fdout); 1218 fdc->fdout = fdout; 1219 TRACE1("[0x%x->FDOUT]", fdout); 1220 1221 if (needspecify) { 1222 /* 1223 * XXX 1224 * special case: since we have just woken up the FDC 1225 * from its sleep, we silently assume the command will 1226 * be accepted, and do not test for a timeout 1227 */ 1228 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1229 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1230 0); 1231 if (fdc->flags & FDC_HAS_FIFO) 1232 (void) enable_fifo(fdc); 1233 } 1234 } 1235 1236 static void 1237 fd_turnoff(void *xfd) 1238 { 1239 int s; 1240 fd_p fd = xfd; 1241 1242 TRACE1("[fd%d: turnoff]", fd->fdu); 1243 1244 /* 1245 * Don't turn off the motor yet if the drive is active. 1246 * XXX shouldn't even schedule turnoff until drive is inactive 1247 * and nothing is queued on it. 1248 */ 1249 if (fd->fdc->state != DEVIDLE && fd->fdc->fdu == fd->fdu) { 1250 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 1251 return; 1252 } 1253 1254 s = splbio(); 1255 fd->flags &= ~FD_MOTOR; 1256 set_motor(fd->fdc, fd->fdsu, TURNOFF); 1257 splx(s); 1258 } 1259 1260 static void 1261 fd_motor_on(void *xfd) 1262 { 1263 int s; 1264 fd_p fd = xfd; 1265 1266 s = splbio(); 1267 fd->flags &= ~FD_MOTOR_WAIT; 1268 if((fd->fdc->fd == fd) && (fd->fdc->state == MOTORWAIT)) 1269 { 1270 fdc_intr(fd->fdc); 1271 } 1272 splx(s); 1273 } 1274 1275 static void 1276 fd_turnon(fd_p fd) 1277 { 1278 if(!(fd->flags & FD_MOTOR)) 1279 { 1280 fd->flags |= (FD_MOTOR + FD_MOTOR_WAIT); 1281 set_motor(fd->fdc, fd->fdsu, TURNON); 1282 timeout(fd_motor_on, fd, hz); /* in 1 sec its ok */ 1283 } 1284 } 1285 1286 static void 1287 fdc_reset(fdc_p fdc) 1288 { 1289 /* Try a reset, keep motor on */ 1290 fdout_wr(fdc, fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1291 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~(FDO_FRST|FDO_FDMAEN)); 1292 DELAY(100); 1293 /* enable FDC, but defer interrupts a moment */ 1294 fdout_wr(fdc, fdc->fdout & ~FDO_FDMAEN); 1295 TRACE1("[0x%x->FDOUT]", fdc->fdout & ~FDO_FDMAEN); 1296 DELAY(100); 1297 fdout_wr(fdc, fdc->fdout); 1298 TRACE1("[0x%x->FDOUT]", fdc->fdout); 1299 1300 /* XXX after a reset, silently believe the FDC will accept commands */ 1301 (void)fd_cmd(fdc, 3, NE7CMD_SPECIFY, 1302 NE7_SPEC_1(3, 240), NE7_SPEC_2(2, 0), 1303 0); 1304 if (fdc->flags & FDC_HAS_FIFO) 1305 (void) enable_fifo(fdc); 1306 } 1307 1308 /****************************************************************************/ 1309 /* fdc in/out */ 1310 /****************************************************************************/ 1311 int 1312 in_fdc(struct fdc_data *fdc) 1313 { 1314 int i, j = 100000; 1315 while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) 1316 != (NE7_DIO|NE7_RQM) && j-- > 0) 1317 if (i == NE7_RQM) 1318 return fdc_err(fdc, "ready for output in input\n"); 1319 if (j <= 0) 1320 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1321 #ifdef FDC_DEBUG 1322 i = fddata_rd(fdc); 1323 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1324 return(i); 1325 #else /* !FDC_DEBUG */ 1326 return fddata_rd(fdc); 1327 #endif /* FDC_DEBUG */ 1328 } 1329 1330 /* 1331 * fd_in: Like in_fdc, but allows you to see if it worked. 1332 */ 1333 static int 1334 fd_in(struct fdc_data *fdc, int *ptr) 1335 { 1336 int i, j = 100000; 1337 while ((i = fdsts_rd(fdc) & (NE7_DIO|NE7_RQM)) 1338 != (NE7_DIO|NE7_RQM) && j-- > 0) 1339 if (i == NE7_RQM) 1340 return fdc_err(fdc, "ready for output in input\n"); 1341 if (j <= 0) 1342 return fdc_err(fdc, bootverbose? "input ready timeout\n": 0); 1343 #ifdef FDC_DEBUG 1344 i = fddata_rd(fdc); 1345 TRACE1("[FDDATA->0x%x]", (unsigned char)i); 1346 *ptr = i; 1347 return 0; 1348 #else /* !FDC_DEBUG */ 1349 i = fddata_rd(fdc); 1350 if (ptr) 1351 *ptr = i; 1352 return 0; 1353 #endif /* FDC_DEBUG */ 1354 } 1355 1356 int 1357 out_fdc(struct fdc_data *fdc, int x) 1358 { 1359 int i; 1360 1361 /* Check that the direction bit is set */ 1362 i = 100000; 1363 while ((fdsts_rd(fdc) & NE7_DIO) && i-- > 0); 1364 if (i <= 0) return fdc_err(fdc, "direction bit not set\n"); 1365 1366 /* Check that the floppy controller is ready for a command */ 1367 i = 100000; 1368 while ((fdsts_rd(fdc) & NE7_RQM) == 0 && i-- > 0); 1369 if (i <= 0) 1370 return fdc_err(fdc, bootverbose? "output ready timeout\n": 0); 1371 1372 /* Send the command and return */ 1373 fddata_wr(fdc, x); 1374 TRACE1("[0x%x->FDDATA]", x); 1375 return (0); 1376 } 1377 1378 /****************************************************************************/ 1379 /* fdopen/fdclose */ 1380 /****************************************************************************/ 1381 int 1382 Fdopen(dev_t dev, int flags, int mode, struct proc *p) 1383 { 1384 fdu_t fdu = FDUNIT(minor(dev)); 1385 int type = FDTYPE(minor(dev)); 1386 fd_p fd; 1387 fdc_p fdc; 1388 1389 /* check bounds */ 1390 if ((fd = devclass_get_softc(fd_devclass, fdu)) == 0) 1391 return (ENXIO); 1392 fdc = fd->fdc; 1393 if ((fdc == NULL) || (fd->type == NO_TYPE)) 1394 return (ENXIO); 1395 if (type > NUMDENS) 1396 return (ENXIO); 1397 if (type == 0) 1398 type = fd->type; 1399 else { 1400 /* 1401 * For each type of basic drive, make sure we are trying 1402 * to open a type it can do, 1403 */ 1404 if (type != fd->type) { 1405 switch (fd->type) { 1406 case FD_360: 1407 return (ENXIO); 1408 case FD_720: 1409 if ( type != FD_820 1410 && type != FD_800 1411 && type != FD_640 1412 ) 1413 return (ENXIO); 1414 break; 1415 case FD_1200: 1416 switch (type) { 1417 case FD_1480: 1418 type = FD_1480in5_25; 1419 break; 1420 case FD_1440: 1421 type = FD_1440in5_25; 1422 break; 1423 case FD_1232: 1424 break; 1425 case FD_820: 1426 type = FD_820in5_25; 1427 break; 1428 case FD_800: 1429 type = FD_800in5_25; 1430 break; 1431 case FD_720: 1432 type = FD_720in5_25; 1433 break; 1434 case FD_640: 1435 type = FD_640in5_25; 1436 break; 1437 case FD_360: 1438 type = FD_360in5_25; 1439 break; 1440 default: 1441 return(ENXIO); 1442 } 1443 break; 1444 case FD_1440: 1445 if ( type != FD_1720 1446 && type != FD_1480 1447 && type != FD_1200 1448 && type != FD_820 1449 && type != FD_800 1450 && type != FD_720 1451 && type != FD_640 1452 ) 1453 return(ENXIO); 1454 break; 1455 } 1456 } 1457 } 1458 fd->ft = fd_types + type - 1; 1459 fd->flags |= FD_OPEN; 1460 device_busy(fd->dev); 1461 device_busy(fd->fdc->fdc_dev); 1462 return 0; 1463 } 1464 1465 int 1466 fdclose(dev_t dev, int flags, int mode, struct proc *p) 1467 { 1468 fdu_t fdu = FDUNIT(minor(dev)); 1469 struct fd_data *fd; 1470 1471 fd = devclass_get_softc(fd_devclass, fdu); 1472 fd->flags &= ~FD_OPEN; 1473 fd->options &= ~FDOPT_NORETRY; 1474 1475 return (0); 1476 } 1477 1478 /****************************************************************************/ 1479 /* fdstrategy */ 1480 /****************************************************************************/ 1481 void 1482 fdstrategy(struct buf *bp) 1483 { 1484 unsigned nblocks, blknum, cando; 1485 int s; 1486 fdu_t fdu; 1487 fdc_p fdc; 1488 fd_p fd; 1489 size_t fdblk; 1490 1491 fdu = FDUNIT(minor(bp->b_dev)); 1492 fd = devclass_get_softc(fd_devclass, fdu); 1493 if (fd == 0) 1494 panic("fdstrategy: buf for nonexistent device (%#lx, %#lx)", 1495 (u_long)major(bp->b_dev), (u_long)minor(bp->b_dev)); 1496 fdc = fd->fdc; 1497 if (fd->type == NO_TYPE) { 1498 bp->b_error = ENXIO; 1499 bp->b_flags |= B_ERROR; 1500 goto bad; 1501 }; 1502 1503 fdblk = 128 << (fd->ft->secsize); 1504 if (!(bp->b_flags & B_FORMAT)) { 1505 if (bp->b_blkno < 0) { 1506 printf( 1507 "fd%d: fdstrat: bad request blkno = %lu, bcount = %ld\n", 1508 fdu, (u_long)bp->b_blkno, bp->b_bcount); 1509 bp->b_error = EINVAL; 1510 bp->b_flags |= B_ERROR; 1511 goto bad; 1512 } 1513 if ((bp->b_bcount % fdblk) != 0) { 1514 bp->b_error = EINVAL; 1515 bp->b_flags |= B_ERROR; 1516 goto bad; 1517 } 1518 } 1519 1520 /* 1521 * Set up block calculations. 1522 */ 1523 if (bp->b_blkno > 20000000) { 1524 /* 1525 * Reject unreasonably high block number, prevent the 1526 * multiplication below from overflowing. 1527 */ 1528 bp->b_error = EINVAL; 1529 bp->b_flags |= B_ERROR; 1530 goto bad; 1531 } 1532 blknum = (unsigned) bp->b_blkno * DEV_BSIZE/fdblk; 1533 nblocks = fd->ft->size; 1534 bp->b_resid = 0; 1535 if (blknum + (bp->b_bcount / fdblk) > nblocks) { 1536 if (blknum <= nblocks) { 1537 cando = (nblocks - blknum) * fdblk; 1538 bp->b_resid = bp->b_bcount - cando; 1539 if (cando == 0) 1540 goto bad; /* not actually bad but EOF */ 1541 } else { 1542 bp->b_error = EINVAL; 1543 bp->b_flags |= B_ERROR; 1544 goto bad; 1545 } 1546 } 1547 bp->b_pblkno = bp->b_blkno; 1548 s = splbio(); 1549 bufqdisksort(&fdc->head, bp); 1550 untimeout(fd_turnoff, fd, fd->toffhandle); /* a good idea */ 1551 1552 /* Tell devstat we are starting on the transaction */ 1553 devstat_start_transaction(&fd->device_stats); 1554 1555 fdstart(fdc); 1556 splx(s); 1557 return; 1558 1559 bad: 1560 biodone(bp); 1561 } 1562 1563 /***************************************************************\ 1564 * fdstart * 1565 * We have just queued something.. if the controller is not busy * 1566 * then simulate the case where it has just finished a command * 1567 * So that it (the interrupt routine) looks on the queue for more* 1568 * work to do and picks up what we just added. * 1569 * If the controller is already busy, we need do nothing, as it * 1570 * will pick up our work when the present work completes * 1571 \***************************************************************/ 1572 static void 1573 fdstart(struct fdc_data *fdc) 1574 { 1575 int s; 1576 1577 s = splbio(); 1578 if(fdc->state == DEVIDLE) 1579 { 1580 fdc_intr(fdc); 1581 } 1582 splx(s); 1583 } 1584 1585 static void 1586 fd_iotimeout(void *xfdc) 1587 { 1588 fdc_p fdc; 1589 int s; 1590 1591 fdc = xfdc; 1592 TRACE1("fd%d[fd_iotimeout()]", fdc->fdu); 1593 1594 /* 1595 * Due to IBM's brain-dead design, the FDC has a faked ready 1596 * signal, hardwired to ready == true. Thus, any command 1597 * issued if there's no diskette in the drive will _never_ 1598 * complete, and must be aborted by resetting the FDC. 1599 * Many thanks, Big Blue! 1600 * The FDC must not be reset directly, since that would 1601 * interfere with the state machine. Instead, pretend that 1602 * the command completed but was invalid. The state machine 1603 * will reset the FDC and retry once. 1604 */ 1605 s = splbio(); 1606 fdc->status[0] = NE7_ST0_IC_IV; 1607 fdc->flags &= ~FDC_STAT_VALID; 1608 fdc->state = IOTIMEDOUT; 1609 fdc_intr(fdc); 1610 splx(s); 1611 } 1612 1613 /* just ensure it has the right spl */ 1614 static void 1615 fd_pseudointr(void *xfdc) 1616 { 1617 int s; 1618 1619 s = splbio(); 1620 fdc_intr(xfdc); 1621 splx(s); 1622 } 1623 1624 /***********************************************************************\ 1625 * fdintr * 1626 * keep calling the state machine until it returns a 0 * 1627 * ALWAYS called at SPLBIO * 1628 \***********************************************************************/ 1629 static void 1630 fdc_intr(void *xfdc) 1631 { 1632 fdc_p fdc = xfdc; 1633 while(fdstate(fdc)) 1634 ; 1635 } 1636 1637 /* 1638 * magic pseudo-DMA initialization for YE FDC. Sets count and 1639 * direction 1640 */ 1641 #define SET_BCDR(fdc,wr,cnt,port) \ 1642 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port, \ 1643 ((cnt)-1) & 0xff); \ 1644 bus_space_write_1(fdc->portt, fdc->porth, fdc->port_off + port + 1, \ 1645 ((wr ? 0x80 : 0) | ((((cnt)-1) >> 8) & 0x7f))); 1646 1647 /* 1648 * fdcpio(): perform programmed IO read/write for YE PCMCIA floppy 1649 */ 1650 static int fdcpio(fdc_p fdc, long flags, caddr_t addr, u_int count) 1651 { 1652 u_char *cptr = (u_char *)addr; 1653 1654 if (flags & B_READ) { 1655 if (fdc->state != PIOREAD) { 1656 fdc->state = PIOREAD; 1657 return(0); 1658 }; 1659 SET_BCDR(fdc, 0, count, 0); 1660 bus_space_read_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1661 FDC_YE_DATAPORT, cptr, count); 1662 } else { 1663 bus_space_write_multi_1(fdc->portt, fdc->porth, fdc->port_off + 1664 FDC_YE_DATAPORT, cptr, count); 1665 SET_BCDR(fdc, 0, count, 0); 1666 }; 1667 return(1); 1668 } 1669 1670 /***********************************************************************\ 1671 * The controller state machine. * 1672 * if it returns a non zero value, it should be called again immediatly * 1673 \***********************************************************************/ 1674 static int 1675 fdstate(fdc_p fdc) 1676 { 1677 int read, format, head, i, sec = 0, sectrac, st0, cyl, st3; 1678 unsigned blknum = 0, b_cylinder = 0; 1679 fdu_t fdu = fdc->fdu; 1680 fd_p fd; 1681 register struct buf *bp; 1682 struct fd_formb *finfo = NULL; 1683 size_t fdblk; 1684 1685 bp = fdc->bp; 1686 if (bp == NULL) { 1687 bp = bufq_first(&fdc->head); 1688 if (bp != NULL) { 1689 bufq_remove(&fdc->head, bp); 1690 fdc->bp = bp; 1691 } 1692 } 1693 if (bp == NULL) { 1694 /***********************************************\ 1695 * nothing left for this controller to do * 1696 * Force into the IDLE state, * 1697 \***********************************************/ 1698 fdc->state = DEVIDLE; 1699 if (fdc->fd) { 1700 device_print_prettyname(fdc->fdc_dev); 1701 printf("unexpected valid fd pointer\n"); 1702 fdc->fd = (fd_p) 0; 1703 fdc->fdu = -1; 1704 } 1705 TRACE1("[fdc%d IDLE]", fdc->fdcu); 1706 return (0); 1707 } 1708 fdu = FDUNIT(minor(bp->b_dev)); 1709 fd = devclass_get_softc(fd_devclass, fdu); 1710 fdblk = 128 << fd->ft->secsize; 1711 if (fdc->fd && (fd != fdc->fd)) { 1712 device_print_prettyname(fd->dev); 1713 printf("confused fd pointers\n"); 1714 } 1715 read = bp->b_flags & B_READ; 1716 format = bp->b_flags & B_FORMAT; 1717 if (format) { 1718 finfo = (struct fd_formb *)bp->b_data; 1719 fd->skip = (char *)&(finfo->fd_formb_cylno(0)) 1720 - (char *)finfo; 1721 } 1722 if (fdc->state == DOSEEK || fdc->state == SEEKCOMPLETE) { 1723 blknum = (unsigned) bp->b_pblkno * DEV_BSIZE/fdblk + 1724 fd->skip/fdblk; 1725 b_cylinder = blknum / (fd->ft->sectrac * fd->ft->heads); 1726 } 1727 TRACE1("fd%d", fdu); 1728 TRACE1("[%s]", fdstates[fdc->state]); 1729 TRACE1("(0x%x)", fd->flags); 1730 untimeout(fd_turnoff, fd, fd->toffhandle); 1731 fd->toffhandle = timeout(fd_turnoff, fd, 4 * hz); 1732 switch (fdc->state) 1733 { 1734 case DEVIDLE: 1735 case FINDWORK: /* we have found new work */ 1736 fdc->retry = 0; 1737 fd->skip = 0; 1738 fdc->fd = fd; 1739 fdc->fdu = fdu; 1740 fdctl_wr(fdc, fd->ft->trans); 1741 TRACE1("[0x%x->FDCTL]", fd->ft->trans); 1742 /*******************************************************\ 1743 * If the next drive has a motor startup pending, then * 1744 * it will start up in its own good time * 1745 \*******************************************************/ 1746 if(fd->flags & FD_MOTOR_WAIT) { 1747 fdc->state = MOTORWAIT; 1748 return (0); /* come back later */ 1749 } 1750 /*******************************************************\ 1751 * Maybe if it's not starting, it SHOULD be starting * 1752 \*******************************************************/ 1753 if (!(fd->flags & FD_MOTOR)) 1754 { 1755 fdc->state = MOTORWAIT; 1756 fd_turnon(fd); 1757 return (0); 1758 } 1759 else /* at least make sure we are selected */ 1760 { 1761 set_motor(fdc, fd->fdsu, TURNON); 1762 } 1763 if (fdc->flags & FDC_NEEDS_RESET) { 1764 fdc->state = RESETCTLR; 1765 fdc->flags &= ~FDC_NEEDS_RESET; 1766 } else 1767 fdc->state = DOSEEK; 1768 break; 1769 case DOSEEK: 1770 if (b_cylinder == (unsigned)fd->track) 1771 { 1772 fdc->state = SEEKCOMPLETE; 1773 break; 1774 } 1775 if (fd_cmd(fdc, 3, NE7CMD_SEEK, 1776 fd->fdsu, b_cylinder * fd->ft->steptrac, 1777 0)) 1778 { 1779 /* 1780 * seek command not accepted, looks like 1781 * the FDC went off to the Saints... 1782 */ 1783 fdc->retry = 6; /* try a reset */ 1784 return(retrier(fdc)); 1785 } 1786 fd->track = FD_NO_TRACK; 1787 fdc->state = SEEKWAIT; 1788 return(0); /* will return later */ 1789 case SEEKWAIT: 1790 /* allow heads to settle */ 1791 timeout(fd_pseudointr, fdc, hz / 16); 1792 fdc->state = SEEKCOMPLETE; 1793 return(0); /* will return later */ 1794 case SEEKCOMPLETE : /* SEEK DONE, START DMA */ 1795 /* Make sure seek really happened*/ 1796 if(fd->track == FD_NO_TRACK) { 1797 int descyl = b_cylinder * fd->ft->steptrac; 1798 do { 1799 /* 1800 * This might be a "ready changed" interrupt, 1801 * which cannot really happen since the 1802 * RDY pin is hardwired to + 5 volts. This 1803 * generally indicates a "bouncing" intr 1804 * line, so do one of the following: 1805 * 1806 * When running on an enhanced FDC that is 1807 * known to not go stuck after responding 1808 * with INVALID, fetch all interrupt states 1809 * until seeing either an INVALID or a 1810 * real interrupt condition. 1811 * 1812 * When running on a dumb old NE765, give 1813 * up immediately. The controller will 1814 * provide up to four dummy RC interrupt 1815 * conditions right after reset (for the 1816 * corresponding four drives), so this is 1817 * our only chance to get notice that it 1818 * was not the FDC that caused the interrupt. 1819 */ 1820 if (fd_sense_int(fdc, &st0, &cyl) 1821 == FD_NOT_VALID) 1822 return 0; 1823 if(fdc->fdct == FDC_NE765 1824 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 1825 return 0; /* hope for a real intr */ 1826 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 1827 1828 if (0 == descyl) { 1829 int failed = 0; 1830 /* 1831 * seek to cyl 0 requested; make sure we are 1832 * really there 1833 */ 1834 if (fd_sense_drive_status(fdc, &st3)) 1835 failed = 1; 1836 if ((st3 & NE7_ST3_T0) == 0) { 1837 printf( 1838 "fd%d: Seek to cyl 0, but not really there (ST3 = %b)\n", 1839 fdu, st3, NE7_ST3BITS); 1840 failed = 1; 1841 } 1842 1843 if (failed) { 1844 if(fdc->retry < 3) 1845 fdc->retry = 3; 1846 return (retrier(fdc)); 1847 } 1848 } 1849 1850 if (cyl != descyl) { 1851 printf( 1852 "fd%d: Seek to cyl %d failed; am at cyl %d (ST0 = 0x%x)\n", 1853 fdu, descyl, cyl, st0); 1854 if (fdc->retry < 3) 1855 fdc->retry = 3; 1856 return (retrier(fdc)); 1857 } 1858 } 1859 1860 fd->track = b_cylinder; 1861 if (!(fdc->flags & FDC_NODMA)) 1862 isa_dmastart(bp->b_flags, bp->b_data+fd->skip, 1863 format ? bp->b_bcount : fdblk, fdc->dmachan); 1864 sectrac = fd->ft->sectrac; 1865 sec = blknum % (sectrac * fd->ft->heads); 1866 head = sec / sectrac; 1867 sec = sec % sectrac + 1; 1868 fd->hddrv = ((head&1)<<2)+fdu; 1869 1870 if(format || !read) 1871 { 1872 /* make sure the drive is writable */ 1873 if(fd_sense_drive_status(fdc, &st3) != 0) 1874 { 1875 /* stuck controller? */ 1876 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1877 format ? bp->b_bcount : fdblk, 1878 fdc->dmachan); 1879 fdc->retry = 6; /* reset the beast */ 1880 return (retrier(fdc)); 1881 } 1882 if(st3 & NE7_ST3_WP) 1883 { 1884 /* 1885 * XXX YES! this is ugly. 1886 * in order to force the current operation 1887 * to fail, we will have to fake an FDC 1888 * error - all error handling is done 1889 * by the retrier() 1890 */ 1891 fdc->status[0] = NE7_ST0_IC_AT; 1892 fdc->status[1] = NE7_ST1_NW; 1893 fdc->status[2] = 0; 1894 fdc->status[3] = fd->track; 1895 fdc->status[4] = head; 1896 fdc->status[5] = sec; 1897 fdc->retry = 8; /* break out immediately */ 1898 fdc->state = IOTIMEDOUT; /* not really... */ 1899 return (1); 1900 } 1901 } 1902 1903 if (format) { 1904 if (fdc->flags & FDC_NODMA) 1905 (void)fdcpio(fdc,bp->b_flags, 1906 bp->b_data+fd->skip, 1907 bp->b_bcount); 1908 /* formatting */ 1909 if(fd_cmd(fdc, 6, NE7CMD_FORMAT, head << 2 | fdu, 1910 finfo->fd_formb_secshift, 1911 finfo->fd_formb_nsecs, 1912 finfo->fd_formb_gaplen, 1913 finfo->fd_formb_fillbyte, 0)) { 1914 /* controller fell over */ 1915 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1916 format ? bp->b_bcount : fdblk, 1917 fdc->dmachan); 1918 fdc->retry = 6; 1919 return (retrier(fdc)); 1920 } 1921 } else { 1922 if (fdc->flags & FDC_NODMA) { 1923 /* 1924 * this seems to be necessary even when 1925 * reading data 1926 */ 1927 SET_BCDR(fdc, 1, fdblk, 0); 1928 1929 /* 1930 * perform the write pseudo-DMA before 1931 * the WRITE command is sent 1932 */ 1933 if (!read) 1934 (void)fdcpio(fdc,bp->b_flags, 1935 bp->b_data+fd->skip, 1936 fdblk); 1937 } 1938 if (fd_cmd(fdc, 9, 1939 (read ? NE7CMD_READ : NE7CMD_WRITE), 1940 head << 2 | fdu, /* head & unit */ 1941 fd->track, /* track */ 1942 head, 1943 sec, /* sector + 1 */ 1944 fd->ft->secsize, /* sector size */ 1945 sectrac, /* sectors/track */ 1946 fd->ft->gap, /* gap size */ 1947 fd->ft->datalen, /* data length */ 1948 0)) { 1949 /* the beast is sleeping again */ 1950 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1951 format ? bp->b_bcount : fdblk, 1952 fdc->dmachan); 1953 fdc->retry = 6; 1954 return (retrier(fdc)); 1955 } 1956 } 1957 if (fdc->flags & FDC_NODMA) 1958 /* 1959 * if this is a read, then simply await interrupt 1960 * before performing PIO 1961 */ 1962 if (read && !fdcpio(fdc,bp->b_flags, 1963 bp->b_data+fd->skip,fdblk)) { 1964 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 1965 return(0); /* will return later */ 1966 }; 1967 1968 /* 1969 * write (or format) operation will fall through and 1970 * await completion interrupt 1971 */ 1972 fdc->state = IOCOMPLETE; 1973 fd->tohandle = timeout(fd_iotimeout, fdc, hz); 1974 return (0); /* will return later */ 1975 case PIOREAD: 1976 /* 1977 * actually perform the PIO read. The IOCOMPLETE case 1978 * removes the timeout for us. 1979 */ 1980 (void)fdcpio(fdc,bp->b_flags,bp->b_data+fd->skip,fdblk); 1981 fdc->state = IOCOMPLETE; 1982 /* FALLTHROUGH */ 1983 case IOCOMPLETE: /* IO DONE, post-analyze */ 1984 untimeout(fd_iotimeout, fdc, fd->tohandle); 1985 1986 if (fd_read_status(fdc, fd->fdsu)) { 1987 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 1988 format ? bp->b_bcount : fdblk, 1989 fdc->dmachan); 1990 if (fdc->retry < 6) 1991 fdc->retry = 6; /* force a reset */ 1992 return (retrier(fdc)); 1993 } 1994 1995 fdc->state = IOTIMEDOUT; 1996 1997 /* FALLTHROUGH */ 1998 1999 case IOTIMEDOUT: 2000 if (!(fdc->flags & FDC_NODMA)) 2001 isa_dmadone(bp->b_flags, bp->b_data + fd->skip, 2002 format ? bp->b_bcount : fdblk, fdc->dmachan); 2003 if (fdc->status[0] & NE7_ST0_IC) { 2004 if ((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2005 && fdc->status[1] & NE7_ST1_OR) { 2006 /* 2007 * DMA overrun. Someone hogged the bus 2008 * and didn't release it in time for the 2009 * next FDC transfer. 2010 * Just restart it, don't increment retry 2011 * count. (vak) 2012 */ 2013 fdc->state = SEEKCOMPLETE; 2014 return (1); 2015 } 2016 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_IV 2017 && fdc->retry < 6) 2018 fdc->retry = 6; /* force a reset */ 2019 else if((fdc->status[0] & NE7_ST0_IC) == NE7_ST0_IC_AT 2020 && fdc->status[2] & NE7_ST2_WC 2021 && fdc->retry < 3) 2022 fdc->retry = 3; /* force recalibrate */ 2023 return (retrier(fdc)); 2024 } 2025 /* All OK */ 2026 fd->skip += fdblk; 2027 if (!format && fd->skip < bp->b_bcount - bp->b_resid) { 2028 /* set up next transfer */ 2029 fdc->state = DOSEEK; 2030 } else { 2031 /* ALL DONE */ 2032 fd->skip = 0; 2033 fdc->bp = NULL; 2034 devstat_end_transaction_buf(&fd->device_stats, bp); 2035 biodone(bp); 2036 fdc->fd = (fd_p) 0; 2037 fdc->fdu = -1; 2038 fdc->state = FINDWORK; 2039 } 2040 return (1); 2041 case RESETCTLR: 2042 fdc_reset(fdc); 2043 fdc->retry++; 2044 fdc->state = RESETCOMPLETE; 2045 return (0); 2046 case RESETCOMPLETE: 2047 /* 2048 * Discard all the results from the reset so that they 2049 * can't cause an unexpected interrupt later. 2050 */ 2051 for (i = 0; i < 4; i++) 2052 (void)fd_sense_int(fdc, &st0, &cyl); 2053 fdc->state = STARTRECAL; 2054 /* Fall through. */ 2055 case STARTRECAL: 2056 if(fd_cmd(fdc, 2, NE7CMD_RECAL, fdu, 0)) { 2057 /* arrgl */ 2058 fdc->retry = 6; 2059 return (retrier(fdc)); 2060 } 2061 fdc->state = RECALWAIT; 2062 return (0); /* will return later */ 2063 case RECALWAIT: 2064 /* allow heads to settle */ 2065 timeout(fd_pseudointr, fdc, hz / 8); 2066 fdc->state = RECALCOMPLETE; 2067 return (0); /* will return later */ 2068 case RECALCOMPLETE: 2069 do { 2070 /* 2071 * See SEEKCOMPLETE for a comment on this: 2072 */ 2073 if (fd_sense_int(fdc, &st0, &cyl) == FD_NOT_VALID) 2074 return 0; 2075 if(fdc->fdct == FDC_NE765 2076 && (st0 & NE7_ST0_IC) == NE7_ST0_IC_RC) 2077 return 0; /* hope for a real intr */ 2078 } while ((st0 & NE7_ST0_IC) == NE7_ST0_IC_RC); 2079 if ((st0 & NE7_ST0_IC) != NE7_ST0_IC_NT || cyl != 0) 2080 { 2081 if(fdc->retry > 3) 2082 /* 2083 * a recalibrate from beyond cylinder 77 2084 * will "fail" due to the FDC limitations; 2085 * since people used to complain much about 2086 * the failure message, try not logging 2087 * this one if it seems to be the first 2088 * time in a line 2089 */ 2090 printf("fd%d: recal failed ST0 %b cyl %d\n", 2091 fdu, st0, NE7_ST0BITS, cyl); 2092 if(fdc->retry < 3) fdc->retry = 3; 2093 return (retrier(fdc)); 2094 } 2095 fd->track = 0; 2096 /* Seek (probably) necessary */ 2097 fdc->state = DOSEEK; 2098 return (1); /* will return immediatly */ 2099 case MOTORWAIT: 2100 if(fd->flags & FD_MOTOR_WAIT) 2101 { 2102 return (0); /* time's not up yet */ 2103 } 2104 if (fdc->flags & FDC_NEEDS_RESET) { 2105 fdc->state = RESETCTLR; 2106 fdc->flags &= ~FDC_NEEDS_RESET; 2107 } else { 2108 /* 2109 * If all motors were off, then the controller was 2110 * reset, so it has lost track of the current 2111 * cylinder. Recalibrate to handle this case. 2112 * But first, discard the results of the reset. 2113 */ 2114 fdc->state = RESETCOMPLETE; 2115 } 2116 return (1); /* will return immediatly */ 2117 default: 2118 device_print_prettyname(fdc->fdc_dev); 2119 printf("unexpected FD int->"); 2120 if (fd_read_status(fdc, fd->fdsu) == 0) 2121 printf("FDC status :%x %x %x %x %x %x %x ", 2122 fdc->status[0], 2123 fdc->status[1], 2124 fdc->status[2], 2125 fdc->status[3], 2126 fdc->status[4], 2127 fdc->status[5], 2128 fdc->status[6] ); 2129 else 2130 printf("No status available "); 2131 if (fd_sense_int(fdc, &st0, &cyl) != 0) 2132 { 2133 printf("[controller is dead now]\n"); 2134 return (0); 2135 } 2136 printf("ST0 = %x, PCN = %x\n", st0, cyl); 2137 return (0); 2138 } 2139 /*XXX confusing: some branches return immediately, others end up here*/ 2140 return (1); /* Come back immediatly to new state */ 2141 } 2142 2143 static int 2144 retrier(struct fdc_data *fdc) 2145 { 2146 register struct buf *bp; 2147 struct fd_data *fd; 2148 int fdu; 2149 2150 bp = fdc->bp; 2151 2152 /* XXX shouldn't this be cached somewhere? */ 2153 fdu = FDUNIT(minor(bp->b_dev)); 2154 fd = devclass_get_softc(fd_devclass, fdu); 2155 if (fd->options & FDOPT_NORETRY) 2156 goto fail; 2157 2158 switch (fdc->retry) { 2159 case 0: case 1: case 2: 2160 fdc->state = SEEKCOMPLETE; 2161 break; 2162 case 3: case 4: case 5: 2163 fdc->state = STARTRECAL; 2164 break; 2165 case 6: 2166 fdc->state = RESETCTLR; 2167 break; 2168 case 7: 2169 break; 2170 default: 2171 fail: 2172 { 2173 dev_t sav_b_dev = bp->b_dev; 2174 /* Trick diskerr */ 2175 bp->b_dev = makedev(major(bp->b_dev), 2176 (FDUNIT(minor(bp->b_dev))<<3)|RAW_PART); 2177 diskerr(bp, "hard error", LOG_PRINTF, 2178 fdc->fd->skip / DEV_BSIZE, 2179 (struct disklabel *)NULL); 2180 bp->b_dev = sav_b_dev; 2181 if (fdc->flags & FDC_STAT_VALID) 2182 { 2183 printf( 2184 " (ST0 %b ST1 %b ST2 %b cyl %u hd %u sec %u)\n", 2185 fdc->status[0], NE7_ST0BITS, 2186 fdc->status[1], NE7_ST1BITS, 2187 fdc->status[2], NE7_ST2BITS, 2188 fdc->status[3], fdc->status[4], 2189 fdc->status[5]); 2190 } 2191 else 2192 printf(" (No status)\n"); 2193 } 2194 bp->b_flags |= B_ERROR; 2195 bp->b_error = EIO; 2196 bp->b_resid += bp->b_bcount - fdc->fd->skip; 2197 fdc->bp = NULL; 2198 fdc->fd->skip = 0; 2199 devstat_end_transaction_buf(&fdc->fd->device_stats, bp); 2200 biodone(bp); 2201 fdc->state = FINDWORK; 2202 fdc->flags |= FDC_NEEDS_RESET; 2203 fdc->fd = (fd_p) 0; 2204 fdc->fdu = -1; 2205 return (1); 2206 } 2207 fdc->retry++; 2208 return (1); 2209 } 2210 2211 static int 2212 fdformat(dev, finfo, p) 2213 dev_t dev; 2214 struct fd_formb *finfo; 2215 struct proc *p; 2216 { 2217 fdu_t fdu; 2218 fd_p fd; 2219 2220 struct buf *bp; 2221 int rv = 0, s; 2222 size_t fdblk; 2223 2224 fdu = FDUNIT(minor(dev)); 2225 fd = devclass_get_softc(fd_devclass, fdu); 2226 fdblk = 128 << fd->ft->secsize; 2227 2228 /* set up a buffer header for fdstrategy() */ 2229 bp = (struct buf *)malloc(sizeof(struct buf), M_TEMP, M_NOWAIT); 2230 if(bp == 0) 2231 return ENOBUFS; 2232 /* 2233 * keep the process from being swapped 2234 */ 2235 PHOLD(p); 2236 bzero((void *)bp, sizeof(struct buf)); 2237 BUF_LOCKINIT(bp); 2238 BUF_LOCK(bp, LK_EXCLUSIVE); 2239 bp->b_flags = B_PHYS | B_FORMAT; 2240 2241 /* 2242 * calculate a fake blkno, so fdstrategy() would initiate a 2243 * seek to the requested cylinder 2244 */ 2245 bp->b_blkno = (finfo->cyl * (fd->ft->sectrac * fd->ft->heads) 2246 + finfo->head * fd->ft->sectrac) * fdblk / DEV_BSIZE; 2247 2248 bp->b_bcount = sizeof(struct fd_idfield_data) * finfo->fd_formb_nsecs; 2249 bp->b_data = (caddr_t)finfo; 2250 2251 /* now do the format */ 2252 bp->b_dev = dev; 2253 BUF_STRATEGY(bp, 0); 2254 2255 /* ...and wait for it to complete */ 2256 s = splbio(); 2257 while(!(bp->b_flags & B_DONE)) { 2258 rv = tsleep((caddr_t)bp, PRIBIO, "fdform", 20 * hz); 2259 if (rv == EWOULDBLOCK) 2260 break; 2261 } 2262 splx(s); 2263 2264 if (rv == EWOULDBLOCK) { 2265 /* timed out */ 2266 rv = EIO; 2267 biodone(bp); 2268 } 2269 if (bp->b_flags & B_ERROR) 2270 rv = bp->b_error; 2271 /* 2272 * allow the process to be swapped 2273 */ 2274 PRELE(p); 2275 BUF_UNLOCK(bp); 2276 BUF_LOCKFREE(bp); 2277 free(bp, M_TEMP); 2278 return rv; 2279 } 2280 2281 /* 2282 * TODO: don't allocate buffer on stack. 2283 */ 2284 2285 static int 2286 fdioctl(dev, cmd, addr, flag, p) 2287 dev_t dev; 2288 u_long cmd; 2289 caddr_t addr; 2290 int flag; 2291 struct proc *p; 2292 { 2293 fdu_t fdu = FDUNIT(minor(dev)); 2294 fd_p fd = devclass_get_softc(fd_devclass, fdu); 2295 size_t fdblk; 2296 2297 struct fd_type *fdt; 2298 struct disklabel *dl; 2299 char buffer[DEV_BSIZE]; 2300 int error = 0; 2301 2302 fdblk = 128 << fd->ft->secsize; 2303 2304 switch (cmd) { 2305 case DIOCGDINFO: 2306 bzero(buffer, sizeof (buffer)); 2307 dl = (struct disklabel *)buffer; 2308 dl->d_secsize = fdblk; 2309 fdt = fd->ft; 2310 dl->d_secpercyl = fdt->size / fdt->tracks; 2311 dl->d_type = DTYPE_FLOPPY; 2312 2313 if (readdisklabel(dkmodpart(dev, RAW_PART), dl) 2314 == NULL) 2315 error = 0; 2316 else 2317 error = EINVAL; 2318 2319 *(struct disklabel *)addr = *dl; 2320 break; 2321 2322 case DIOCSDINFO: 2323 if ((flag & FWRITE) == 0) 2324 error = EBADF; 2325 break; 2326 2327 case DIOCWLABEL: 2328 if ((flag & FWRITE) == 0) 2329 error = EBADF; 2330 break; 2331 2332 case DIOCWDINFO: 2333 if ((flag & FWRITE) == 0) { 2334 error = EBADF; 2335 break; 2336 } 2337 2338 dl = (struct disklabel *)addr; 2339 2340 if ((error = setdisklabel((struct disklabel *)buffer, dl, 2341 (u_long)0)) != 0) 2342 break; 2343 2344 error = writedisklabel(dev, (struct disklabel *)buffer); 2345 break; 2346 case FD_FORM: 2347 if ((flag & FWRITE) == 0) 2348 error = EBADF; /* must be opened for writing */ 2349 else if (((struct fd_formb *)addr)->format_version != 2350 FD_FORMAT_VERSION) 2351 error = EINVAL; /* wrong version of formatting prog */ 2352 else 2353 error = fdformat(dev, (struct fd_formb *)addr, p); 2354 break; 2355 2356 case FD_GTYPE: /* get drive type */ 2357 *(struct fd_type *)addr = *fd->ft; 2358 break; 2359 2360 case FD_STYPE: /* set drive type */ 2361 /* this is considered harmful; only allow for superuser */ 2362 if (suser(p) != 0) 2363 return EPERM; 2364 *fd->ft = *(struct fd_type *)addr; 2365 break; 2366 2367 case FD_GOPTS: /* get drive options */ 2368 *(int *)addr = fd->options; 2369 break; 2370 2371 case FD_SOPTS: /* set drive options */ 2372 fd->options = *(int *)addr; 2373 break; 2374 2375 default: 2376 error = ENOTTY; 2377 break; 2378 } 2379 return (error); 2380 } 2381 2382 /* 2383 * Hello emacs, these are the 2384 * Local Variables: 2385 * c-indent-level: 8 2386 * c-continued-statement-offset: 8 2387 * c-continued-brace-offset: 0 2388 * c-brace-offset: -8 2389 * c-brace-imaginary-offset: 0 2390 * c-argdecl-indent: 8 2391 * c-label-offset: -8 2392 * c++-hanging-braces: 1 2393 * c++-access-specifier-offset: -8 2394 * c++-empty-arglist-indent: 8 2395 * c++-friend-offset: 0 2396 * End: 2397 */ 2398